• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    ROW UNIT FOR A SEEDING MACHINE Row unit for a sowing machine includes a first seed metering unit having a first metering member for singling seeds and a second seed metering having a second metering member for singling seeds. A motor is operably coupled to the first and second seed feeders to selectively drive the first seed feeder or second seed feeder.
    公开号:BR102015027943B1
    申请号:R102015027943-4
    申请日:2015-11-05
    公开日:2021-04-06
    发明作者:Elijah B. Garner；Kamalakannan Natarajan；Keith L. Felton；Kriss Helmick
    申请人:Deere & Company；
    IPC主号:
    专利说明:

    [0001] [001] The present description refers to a row unit for a sowing machine, such as a row crop planter for agricultural orders. More specifically, the present description relates to a row unit having a seed feeder and a seed delivery mechanism. summary
    [0002] [002] In one aspect, the description provides a row unit for a seeder. The row unit includes a first seed metering unit having a first metering member for singling seeds, and a second seed metering having a second metering member for singling seeds. A motor is operationally coupled to the first and second seed feeders to selectively drive the first seed feeder or the second seed feeder.
    [0003] [003] In another aspect, the description provides a row unit for a seeder. The row unit includes a first seed reservoir to contain a first seed variety, a second seed reservoir to contain a second seed variety, and a seed doser assembly in communication with the first and second seed reservoir to move selectively seed from the first seed reservoir or the second seed reservoir. A motor is operationally coupled to the seed dosing assembly to selectively drive seed movement from the first seed reservoir or from the second seed reservoir.
    [0004] [004] Other aspects of the invention will become apparent by considering the detailed description and the accompanying drawings. Brief Description of Drawings
    [0005] [005] Figure 1 is the perspective view of a sowing machine.
    [0006] [006] Figure 2 is a schematic diagram of a seed loader for the sowing machine in figure 1.
    [0007] [007] Figures 3-5 are seen in perspective of a construction of the seed loader in figure 2.
    [0008] [008] Figures 6-11 are several views of the seed loader in figures 3-5, placed on the sowing machine.
    [0009] [009] Figures 12-16 are several views of another construction of the seed loader of figure 2 arranged in the sowing machine.
    [0010] [0010] Figures 17-22 are several views of yet another construction of the seed loader of figure 2 arranged in the sowing machine.
    [0011] [0011] Figures 23-27 are several views of a pneumatic seed loader arranged on the sowing machine.
    [0012] [0012] Figures 28-32 are several views of another pneumatic seed loader arranged on the sowing machine. Detailed Description
    [0013] [0013] Before any modalities of the invention are explained in detail, it should be understood that the description is not limited in its application to the details of construction and the arrangement of components set out in the following description or illustrated in the accompanying drawings. The invention is capable of other modalities and can be practiced or carried out in various ways.
    [0014] [0014] Figure 1 illustrates a sowing machine 10, such as a row sowing machine. The sowing machine 10 has a frame 12, on which a plurality of individual row units 14 are mounted. Seed sources, such as storage tanks 13a-13c, carry seed which is supplied, for example, pneumatically, to a mini-shaker (not shown) in each row unit 14. Storage tanks 13a-13c can be coupled to the mini-shafts via conduits 20, such as flexible tubes, and a pressurized delivery device (not shown). Each storage tank 13a-13c can be used to contain the same variety of seeds, or a different variety of seeds. For example, a first storage tank 13a may contain a first variety of seeds, a second storage tank 13b may contain a second variety of seeds, and a third storage tank 13c may contain a third variety of seeds. The varieties are typically within the same crop (such as corn, soybeans, etc.), with each variety having different characteristics, which allows a better variety to be planted at a given location in a field. Characteristics may include seed tolerances to disease, draft, humidity, pests, and other seed characteristics, etc. It may also be possible for the different varieties to include plant types, such as corn, soybeans, etc., for example, the first storage tank 13a may contain corn, the second storage tank 13b may contain soybeans, and the third storage tank. storage 13c may contain a more moisture tolerant variety of corn or soy. Thus, each row unit 14 can be coupled to several conduits 20, so that each row unit 14 is coupled to each storage tank 13a-13c to receive the first, second, and third seed varieties. In other constructions, storage tanks 13a-13c can contain the same variety of seed.
    [0015] [0015] Each row unit 14 has a frame 18, on which the components of row unit 14 are mounted. For example, frame 18 may carry trench opening discs to form an open trench 15 in the soil below the sowing machine 10, into which seed is deposited, and closing and compacting wheels to close trench 15 over the deposited seed. and to firm the soil in the closed ditch 15.
    [0016] [0016] In general, and with reference also to figure 2 for context, a seed metering set 16 having two seed metering units 22a, 22b is coupled to each row unit frame 18. The seed metering set 16 may have one, two, three or more seed dosers coupled to each row unit frame 18. The seed dosers 22a, 22b, illustrated, are substantially the same, with the same parts designated here with the same or similar reference numbers. In other constructions, seed dosers 22a, 22b may be different (for example, two different types of seed dosers may be used). Each seed doser 22a, 22b takes seeds from a seed bank and sequentially unloads individual seeds for delivery, one at a time (for example measuring or singling seeds) As an example, each seed doser 22a, 22b can use an air pressure differential, (ie, vacuum and / or positive pressure), to adhere seeds to a dosing member 24, which can be in the form of a disc, a basket, or more generally a plate, having holes 26 that extend through it. The holes 26 are generally arranged circumferentially around a metering axis A1, A2 (respectively), substantially in a circle, close to an outer edge of the dosing member 24. The dosing member 24 can be driven by a motor 30 , such as an electric motor (see Figure 11, for example). In other constructions, other types of engines, such as hydraulic, pneumatic, etc., can be used as well as various types of mechanical drives.
    [0017] [0017] A seed reservoir 28 containing a seed bank is positioned on one side of each dosing member 24 in a lower portion thereof, and is connected to one or more of the storage tanks 13a-13c to receive seeds from of the same through the ducts 20. A pressure differential is applied through the dosing member 24, which rotates around the geometric axis of the doser A1 or A2 through the seed bank, so that individual seeds S1, S2 (Figure 2 ) that come from the respective seed bank are attached due to the pressure differential to the through holes 26. In order to release the seed, one seed at a time (for example, to measure, or single out the seeds) the pressure differential is ended in a desired release position, although in other modalities the differential is maintained and mechanical assistance is used to tap, pull, or push the seed out of the dosing member 24, interfere with the orifice to interrupt r pressure differential, or otherwise release the seed. In still other constructions, other types of dosing members for measuring / singling out the seeds can be used.
    [0018] [0018] A seed supply mechanism 32 is also coupled to each row unit frame 18. The seed supply mechanism 32 receives dosed seeds from each seed doser 22a, 22b and supplies the seeds to the ditch 15 in the soil. The seed delivery mechanism 32, or conveyor, may include a conduit such as a belt 34, which receives the dosed seeds from each seed doser 22a, 22b, transports the dosed seeds towards the soil, and expels the seeds. seeds dosed in the ditch 15. Belt 34 is driven through one or more pulleys (not shown) that rotate around a geometric axis D (figure 2) by a motor, such as an electric motor, or by any hydraulic or pneumatic as well as various types of mechanical drives. The belt 34 may be in the form of a brush belt 34 with bristles for trapping, retaining, and releasing the metered seeds, whereby the movement of the seed between the seed metering and the ditch is controlled. In other constructions, the seed delivery mechanism 32 may include other types of belts, such as a foam belt, a conveyor belt, a belt with inlets, a belt with bags, a belt with resilient fingers, etc. In still other constructions, the seed delivery mechanism 32 may include other types of mechanisms suitable for receiving seeds from each seed doser 22a, 22b and transporting the seeds to ditch 15. For example, the seed delivery mechanism 32 may include other conduits such as one or more tubes to guide seeds from each seed doser 22a, 22b to ditch 15.
    [0019] [0019] Two or more seed dosers 22a, 22b are coupled to each row unit frame 18. The first seed doser 22a is in communication with a seed source (for example, one of the storage tanks 13a-13c) , and the second seed doser 22b is in communication with another seed source (for example, another of the storage tanks 13a-13c) and so on. As shown in Figure 2, the first and second seed feeders 22a, 22b can be arranged generally in parallel so that the respective seed metering axes A1, A2 are substantially coaxial. In other constructions, such as those illustrated in the constructions of figures 11, 12-15 and 16-21, the first and second feeders 22a, 22b can be arranged in such a way that the respective feeder geometrical axes A1, A2 are generally parallel, but displaced by a certain distance. In other similar constructions, the first and second feeders 22a, 22b can be inclined with respect to each other so that the feeder geometrical axes A1, A2 intersect with a small included angle. In yet other constructions, the seed metering assembly 16 may include a single seed metering set configured to selectively dose seeds from two or more different seed sources, or alternatively, three or more seed metering units may be coupled to each unit of seed. row frame 18 and in communication with one or more of the storage tanks 13a-13c.
    [0020] [0020] A seed loader 36 is disposed between the first and second seed feeders 22a, 22b. Figs. 3-11 illustrate a first construction of the seed loader 36 as a single wheel loader, Figs. 12-16 illustrate a second construction of the seed loader 136 also as a single wheel loader, and Figures 17-22 illustrate a third construction of the seed loader 236 as a double wheel loader. Generally, the seed carrier 36, 136, 236 is positioned to selectively receive dosed seeds from one (or both) of the first and second seed dosers 22a, 22b and transfer dosed seeds to the seed delivery mechanism 32. In other constructions, the seed loader 36, 136, 236 can be arranged adjacent to the single seed feeder and used to transfer metered seeds from the single seed feeder (22a or 22b) to the seed delivery mechanism 32.
    [0021] [0021] The seed loader 36, 136, 236 is a rotary seed loader, mounted for rotation about a loader B axis, generally perpendicular to at least one or both of the A1, A2 feeder axes. In some constructions, for example, the first and second seed feeders 22a, 22b are inclined with respect to each other, the loader geometry axis B can be arranged transversely to the feeder geometry axes A1, A2, but not necessarily perpendicular.
    [0022] [0022] As schematically illustrated in figure 2, the seed loader 36, 136, 236 includes receptacles 38 for receiving the seed from the seed dispensers 22a, 22b at a catchment site 40. The receptacles 38 are configured to rotate in around the loader geometry axis B to transfer the seed in a circumferential path from the pickup location 40 to an outlet location 42 on the seed delivery mechanism 32.
    [0023] [0023] It should be understood that figure 2 is merely schematic, and that the number, spacing, and structure of the receptacles 38 and the carrier 36 may vary between constructions. In one construction, four receptacles 38 are employed, and receptacles 38 are spaced approximately 90 degrees around the loader B axis, however, receptacles 38 can be spaced non-uniformly around the loader B axis. constructions. In addition, one, two, three, five, or more receptacles 38 may be employed in other constructions and may be spaced uniformly or non-uniformly around the loader B geometric axis. The seed loader constructions 36, 136, 236 illustrated here there are three receptacles 38.
    [0024] [0024] Figures 3-11 and figures 12-16 illustrate two single-wheel constructions 36, 136. The seed loader 36, 136 includes an axle 44, 144, a hub portion 46, 146, a housing 48, 148 and a sweeper 49, 149. As features of the seed loader 36 and the seed loader 136 do not need to be described separately here and are labeled with the same reference numeral or similar plus 100. Hub portion 46, 146 is coupled to the axis 44, 144 for rotation with the same about the loader geometric axis B and includes a sweeper 49, 149 which extends therefrom to sweep the seed from the seed dosers 22a, 22b. The shaft 44, 144, hub portion 46,146 and the sweeper 49, 149 rotate with respect to the frame 18. In the illustrated construction, the sweeper 49, 149 comprises shovels 50, 150 extending radially from the hub portion 46, 146 to sweep the seed from the respective seed feeder 22a, 22b. Three blades 50, 150 define three receptacles 38 (figure 5) for receiving seeds, each receptacle 38 being defined as the space or compartment within the housing 48, 148 between successive blades 50, 150 and the cube portion 46, 146 in which the seed is received and moved from the pickup location 40 to the outlet location 42. The paddles 50, 150 are spaced approximately evenly around the loader geometry axis by angular distances of about 120 degrees, but it should be understood that less or more blades 50, 150 can be used to define fewer or more receptacles 38, 138 and that the blades can be spaced evenly or non-uniformly.
    [0025] [0025] Each paddle 50, 150 is coupled to the cube portion 46, 146 in a cantilevered shape by means of an arm 41, 141 which allows radial and / or circumferential flexing capacity. Each blade 50, 150 extends obliquely from arm 41, 141 and can be radial or oblique with reference to the geometric axis B. In the illustrated constructions, each arm 41, 141 includes a first portion 43, 143 generally extending radially from of the cube and a second portion 45, 145 generally extending circumferentially from the first portion 43, 143 leaving a first interstice 47, 147 between cube portion 46, 146 and the second portion 45, 145 in a radial direction and a second interstice 59, 159 between the paddle 50, 150 and the adjacent arm 41, 141 in a circumferential direction. The paddle 50, 150 generally extends radially from the second portion 45, 145. As such, the provision of the first and second interstices 47, 147, 59, 159 allows space for the flexion of each arm 41, 141 and of each paddle 50, 150 in the radial and circumferential directions, for example, in response to the engagement of the paddles 50, 150 with the belt 34 of the seed delivery mechanism 32 (which will be described in more detail below) or in response to the engagement of the shovels 50, 150 with other components, such as seed dosers 22a, 22b and the seeds thereof. The first interstice 47, 147 can be filled with an elastic material, such as foam or resin, to inhibit the seeds from being trapped in the seed carrier 36, 136
    [0026] [0026] With reference to the construction of FIGS. 12-15, the first portion 143 is in a fork including two extensions each, connecting the second portion 145 at opposite ends so that each sweeper 149 is substantially symmetrical with respect to a radial geometric axis E (Fig. 15). The symmetrical construction of each sweeper 149 allows each shovel 150 to flex and react to forces in the same way when the seed loader 136 is rotating clockwise and counterclockwise.
    [0027] [0027] Instead of shovels 50, 150 the sweeper 49, 149 can also include other mechanisms for sweeping the seed, such as brushes, bristles, foam, resilient fingers, etc. Some sweeping mechanisms, such as a brush wheel and a foam wheel, can be continuous around the loader geometric axis B, and can effectively define as many receptacles 38, 138 as locations where the seed can be received.
    [0028] [0028] Housing 48, 148 includes a first feeder opening 52, 152 disposed adjacent to the first seed feeder 22a, a second feeder opening 54, 154 disposed adjacent to the second seed feeder 22b, and a supply opening 56, 156, or outlet, disposed adjacent and in communication with the seed delivery mechanism 32. The opening of the first dispenser 52, 154 and the opening of the second dispenser 54 correspond to the collection points 40. Inserts 51, 53 (figure 5) and 151, 153 (figures 13-14) made of spring steel or other low-wear material are arranged close to each dispenser opening 52, 54, respectively. Each insert 51, 53, 151, 153 can be referred to here as a ramp.
    [0029] [0029] With reference to the construction of figures 3-11, and as shown specifically in figures 3-5, each insert 51, 53 can be held in place over / through / in / next to each opening 52, 54 in any desired manner (for example, upward curved ends that adapt to the characteristics of the housing 48, adjusted by fitting, fixed, etc.), and may have an orifice 55, 57 (respectively) shaped and sized to allow seed to pass. Inserts 51, 53 inhibit wear in the seed loader 36 and can be replaced when necessary. In some constructions, openings 52, 54 can be sized and shaped to allow certain varieties of seed (for example, significantly different seed sizes) to pass and can be interchanged, depending on the variety of seed being used.
    [0030] [0030] With reference to the construction of FIGS. 12-15, and with particular reference to Figs. 13-14, each insert 151, 153 is received in a recessed groove 125 in the respective dosing member 24. The recessed groove 125 is recessed from a surface of the dosing member 24, such as a seed surface 60 in communication with the seed bank and to which the dosed seeds are attracted. The recessed groove 125 is substantially arched and with reference to the respective metering axis A1, A2, and, more specifically, can be substantially circular. As the seed doser 22a, 22b rotates in frictional engagement with the inserts 151, 153, the inserts 151, 153 are recessed in the circular recessed groove 125 and remain stationary with respect to frame 18. When other types of dosing members are employees, it should be understood that slot 125 can have other corresponding shapes and configurations. Inserts 151, 153 each have a respective ramp surface 161, 163 inclined from the first opening of the feeder 152 and the second opening of the feeder 154, respectively, to the delivery opening 156, which guide the seed through the feeder. seed 136 from the first and second seed feeder 22a, 22b for the seed delivery mechanism 32. Specifically, the ramp surface 161, 163 can be arched with respect to the loader geometric axis B to cooperate with the sweeper 149 to orient the seeds. The ramp surfaces 161, 163 are aligned with or recessed from the respective surface of the metering member 24, so as to facilitate a smooth, uninhibited path for each seed to move from the first and second metering openings 152, 154 for the supply opening 156. The inserts 151, 153 can engage with the seed supply mechanism 32, for example, the conduit 34, to reduce interstices that can involuntarily trap the seeds.
    [0031] [0031] Returning to the seed loaders 36, 136, the sweeper 49, 149 may or may not contact the dosing member (s) 24 and may engage the seed while the seed is still attached to the member (s) ( s) by vacuum dosing 24, after the vacuum is released, stopped, interrupted, etc., or after the seed is otherwise released from the dosing member (s) 24. Either or more of the housing 48, 148 of the blades 50, 150 of the inserts 51, 53, 151, 153 etc. you can contact dosing member (s) 24 while sweeping the seed from dosing member (s) 24, or you can receive the seed without contacting dosing member (s) 24, or it can engage the dosing member 24 of one of the seed dosers 22a, 22b and not of the other seed dosers 22a, 22b. For example, paddles 50, 150 can engage dosing member (s) 24 to sweep the seed that is adhered to dosing member (s) 24 by pressure differential. As such, paddles 50, 150 can separate the seed away from sticking with the dosing member (s) 24 by contact with the seed and the dosing member (s) 24. In other constructions , paddles 50, 150 can separate the seed away from adhering to the dosing member (s) 24 by contacting the seed without contacting the dosing member (s) 24. In still other constructions , the interstice can be arranged between the sweeper 49, 149 and the dosing member (s) 24 so that the sweeper 49, 149 receives the seed after the seed is released from the member (s) ) dosing 24 without engaging the dosing member (s) 24.
    [0032] [0032] With reference to the construction of figures 3-11, the housing 48 is fixed counter-rotation related to the geometric axis B of the loader, that is, not broken with respect to the frame 18. The housing 48 can be arranged to overlap with the belt 34 of the seed delivery mechanism 32 so that the housing 48 enters the bristles of the belt 34 (see figures 6 and 7). The supply opening 56, which corresponds to the outlet location 42, thus opens onto the belt 34 and specifically into the bristles of the belt 34 to deposit seeds within them. The seed carrier 36 can be substantially centered around a center line C of the belt 34 of the seed delivery mechanism 32 (see the side view of figure 6 and the top view of figure 9), or it can be slightly displaced, in other constructions.
    [0033] [0033] With reference to the construction of FIGS. 12-16, the housing 148 is supported for rotation about the geometric axis B of the loader by means of a bearing 165 disposed between the housing 148 and the axis 144. This configuration can be applied to any construction in the present specification. When the axis 144 rotates, the friction in the bearing 165 acts to couple the housing 148 to rotate in the direction of the axis 144. Thus, the housing 148 is driven to rotate with the axis 144. However, a stop 169 limits the range of motion of enclosure 148 to some degrees, for example, about 5 to about 10 degrees, about 1 to about 30 degrees, about 1 to about 20 degrees, or about 1 to about 15 degrees, or about 1 to about 10 degrees, etc. When the stop 169 is reached, the axis 144 rotates freely in the bearing 165 and the housing 148 remains against the stop 169. The projections 173 which generally extend radially from the housing 148 and are spaced by a radial interstice 175 engage at stop 169 to inhibit rotation, or swing, movement of housing 148 in any direction, stop 169 is arranged in opening 175 radially between projections 173. Figs. 14-15 illustrate the casing 148 moving between a first position (fig. 14) and a second position (fig. 15) against the stop 169.
    [0034] [0034] The housing 148 has a wall 177 generally arranged normal to the geometric axis B and arranged downstream of the sweeper 149 in relation to the direction of the seed delivery mechanism 32. In other words, the seed delivery mechanism 32 (for example , belt 34) moves past sweeper 149 first and then wall 177. Wall 177 includes a first wall 177a and a second wall 177b, which can be formed separately or as a piece, which swings inward and outward outside the overlap with the seed delivery mechanism 32, for example, the belt 34, so that the first wall 177a enters the bristles of the belt 34 adjacent to, and downstream from, the sweeper 149 (in relation to the direction of pipeline seed supply 34, which moves to the page in figures 14 and 15) when housing 148 rotates in one direction as shown with invisible lines in figure 15, and the second wall 177b enters the bristles of the belt 34 adjacent to, and up to before from, sweeper 149 when housing 148 rotates in the other direction as shown in invisible lines in figure 14. Thus, the first and second walls 177a, 177b guide seeds from the first and second seed dosers 22a, 22b, respectively , to an inner region of the seed delivery mechanism 32 in the vicinity of the center line C, instead of just to the edge of the seed delivery mechanism 32. The first and second walls 177a, 177b provide a rear stop to inhibit the seed to be swept to the seed delivery mechanism 32 until the seed reaches an internal region, such as near the center, of the seed delivery mechanism 32. In other words, the delivery opening 156, which corresponds with the return of location 42, thus opens in an internal region of the belt 34, instead of the edge, and specifically to the internal region of the bristles of the belt 34 to deposit seeds on it. When the first wall 177a (Figure 15) is superimposed on the seed delivery mechanism 32, the second wall 177b is not, and vice versa. Thus, the first and second walls 177a, 177b alternate coupling to the seed delivery mechanism 32, in conjunction with a direction of rotation of the seed loader 136. As such, housing 148 acts as a light swing to form a wall of seed blocking (177a or 177b, alternately), so that the seed is deposited in the inner region of the brush belt 34. Housing 148 swings from side to side to show the wall 177a, 177b that extends on the belt in brush 34 from one side or the other, depending on the seed doser 22a, 22b that is operating. The walls 177a, 177b inhibit the seed from being swept by the seed delivery mechanism 32 before the seed reaches a safe position in the inner region of the seed delivery mechanism 32.
    [0035] [0035] Returning to the seed loaders 36, 136, the sweeper 49, 149 moves in a direction generally transverse to the direction of travel of the belt 34, where the sweeper 49, 149 and the belt 34 meet (that is, in the vicinity of the exit location 42). Thus, the blades 50, 150 sweep through the belt 34 and into the belt bristles laterally, that is, transversely to the direction of movement of the belt 34, for example, generally perpendicular to the movement of the belt 34 or, in other constructions, transversely to any other angle with respect to the movement of the belt 34. In other constructions, the sweeper 49, 149 can travel generally parallel to the direction of travel of the belt 34, close to the exit location 42, for example, contrary to the direction of travel of the belt. belt 34 or concurrently with the direction of travel of the belt 34.
    [0036] [0036] The seed loader 36, 136 is selectively driven to rotate in clockwise and counterclockwise directions by at least one motor, which can include the respective motor 30 by driving the respective seed doser 22a, 22b (as shown in FIGS 6-11), two engines independent of the seed metering engines 30 (not shown), a single independent engine (not shown), or a single seed metering engine 130 (Fig. 12). In any case, a mechanical drive 58, 158 (described below) coupled to the motor (s) includes gears and / or clutches to drive the seed doser 22a, 22b and the seed loader 36, 136 in a choreographed manner . That is, based on the number of receptacles 38, 138 or paddles 50, 150 of the 44 axis it can be controlled (for example, mechanically by means of gears and clutches of the mechanical transmission or electronically through a controller of other constructions) to operate the a speed that corresponds to the number, spacing and speed of seeds being collected by the seed doser 22a, 22b so that the shovel 50, 150 sweeps each metered seed sequentially. In still other constructions, other types of motors, such as hydraulic or pneumatic motors, can be used as well as other types of mechanical drives. The engine (s) 62 or other device can be controlled to operate in a specified direction, depending on which seed feeder 22a, 22b is active, or the seed feeder engine (s) 30, 130 it can (m) be geared and clutch the seed loader 36, 136 in the corresponding direction.
    [0037] [0037] As illustrated in FIGS. 6-11, a mechanical drive 58 can be coupled to each side of the axis 44 between the axis 44 and the respective seed metering motor 30 for the transfer of driving force to drive the axis 44 around the geometric axis of the loader B. Thus, the seed loader 36 can be driven in one direction when the first seed feeder 22a is operating and in an opposite direction when the second seed feeder 22b is operating by the respective seed feeder motor 30.
    [0038] [0038] As illustrated in figures 12-16, with particular reference to Figs. 12 and 16, a motor 130, which can be a single reversible motor, and a mechanical drive 158 are configured to selectively drive one of the seed feeders 22a, 22b and the seed loader 136 together so that the sweeper 149 is driven in a direction that corresponds with the seed feeder 22a, 22b being driven to move seeds from the seed feeder 22a, 22b being driven so that the paddles 150 are timed to meet a seed from each through hole 26 in a row. As illustrated, the mechanical drive 158 includes an axis 144 coupled to the motor 130 by means of gears 167, such as bevel gears or another suitable type of coupling. Axis 144 is driven in a first direction when motor 130 is operated in a first direction and is driven in a second opposite direction when motor 130 is driven in a second opposite direction. The mechanical drive 158 also includes metering gears 179a, 179b, such as bevel gears or another suitable type of coupling, coupled between the axis 144 and the metering member 24 of the respective seed metering 22a, 22b. Specifically, the metering gears 179a, 179b are each coupled to a respective unidirectional clutch 181a, 181b arranged between the axis 144 and the respective dosing member 24 to drive the respective dosing member 24 when the motor 130 is operating in the respective direction. The unidirectional clutch 181a, 181b may include teeth 183a, 183b, or other suitable structure, to engage with the teeth 62, or other suitable structure, of the corresponding dosing member 24. For example, when the engine 130 is driven in the first direction, the first seed doser 22a is driven by the first unidirectional clutch 181a and the second unidirectional clutch 181b of freewheel clutch so that the second seed doser 22b is not driven, and vice versa. Thus, an engine output is reversible. Alternatively, motor 130 may be a single direction motor and mechanical drive 158 may include a reverser (not shown), to reverse the direction of the motor output. In other constructions, the motor output can be reversible in other ways. As such, a single motor selectively drives one of the seed feeders 22a, 22b and, correspondingly, drives the seed loader 136.
    [0039] [0039] In operation, when the cube portion 46, 146 rotates inside the housing 48, 148, the shovels 50, 150 sweep the seed from the first seed doser 22a or the second seed doser 22b when the shovels 50, 150 pass through the opening of the first dispenser 52 and the opening of the second dispenser 54, 154 respectively. Paddles 50, 150 can sweep the seed up or down, depending on how the sweeper 49, 149 rotates (as described in more detail below). The first and second seed feeders 22a, 22b can be selectively operated in such a way that only one seed feeder is dosing seeds at a time. In this way, the first and second seed feeders 22a, 22b can be controlled to provide a selected seed variety for the seed supply mechanism 32 for supply to ditch 15. In other constructions, both seed feeders 22a , 22b can be operable to supply seeds at the same time.
    [0040] [0040] In another construction, the seed loader 36 can rotate in a direction dependent on that in which the first or second seed feeders 22a, 22b is operating. For example, the seed loader 36 can operate counterclockwise when the first seed feeder 22a is operating and clockwise when the second seed feeder 22b is operating, so that the seeds only need to be transferred in one path circumferential around the loader geometry axis B by less than 180 degrees to the exit location 42. The reverse can also be used in such a way that the seeds are always transferred in an angular path around the loader geometry axis for more than 180 degrees. It should be understood that other angular distances can be used, depending on the spacing of the first feeder opening 52, the second feeder opening 54, and the delivery opening 56. In other constructions, the seed loader 36, 136 can rotate around of the loader geometry axis B in a single direction (for example, clockwise or counterclockwise). With reference to the schematic illustration of figure 2, if the seed loader 36, 136 operates clockwise, a first seed is collected at the collection location 40 of the first seed doser 22a (if the first seed doser 22a is operated) and moved and a circumferential path around the loader B's geometric axis greater than 180 degrees (for example, about 270 degrees) to return location 42, or a second seed is collected at collection location 40 of the second seed feeder 22b (if the second seed feeder 22b is operated) and moved in a circumferential path around the loader geometry axis B by less than 180 degrees (for example, about 90 degrees) to the exit location 42. The reverse of this operation can also be employed.
    [0041] [0041] In other constructions, the seed loader 36, 136 can be oscillating, alternatively mobile, mobile in translation, or mobile in other ways to capture seeds in one or more doser openings 52, 54 and to unload the seeds on site output 42.
    [0042] [0042] In still other constructions, two or more seed loaders 36, 136 can be employed, for example, a seed loader 36, 136 for each individual seed feeder. Or, equivalently, the seed loader 36, 136 can include dual sweepers as described in greater detail below. As such, two seed loaders 36 (or sweepers 49, 149) can be used in such a way that a seed loader always rotates in one direction to transfer seeds from the first seed feeder 22a to the seed delivery mechanism 32, and the other seed loader always rotates in the same or opposite direction to transfer seeds from the second seed feeder 22b to the seed delivery mechanism 32.
    [0043] [0043] An example of this type of double seed loader is illustrated in FIGS. 17-22. A seed loader 236 includes two hub portions 246a, 246b and two sweepers 249a, 249b. The sweepers 249a, 249b include the same features as the 49 sweepers, but are each driven in opposite directions. How resources are labeled in the figures. 19-20 using the same reference numerals shown in FIGS. 3-5 plus 200 and do not need to be described again. Reference to common resources is made with the description above. The sweepers 249a, 249b are each dedicated to a seed feeder 22a, 22b and configured to rotate when the corresponding seed feeder 22a, 22b is in use. It is evident from the description above that many constructions exist to drive sweepers 249a, 249b, accordingly. For example, hub portions 246a, 246b can be coupled to the same axis 244 (for example, as axis 144) driven by a single motor 130 and is geared so that one of the sweepers 249a, 249b is driven when the axis 144 rotate in one direction and the other of sweepers 249a, 249b is triggered when axis 144 rotates in the other direction. Alternatively, two separate axes 244 can be employed, one for each hub part 246a, 246b. In some constructions, one of the sweepers 249a, 249b is driven by a first motor (not shown) and the other of the sweepers 249a, 249b is driven by a second motor (not shown). The seed loader 236 can be driven by any of the mechanical and motor drive arrangements described above. In figure 21, the seed loader 236 is illustrated as being driven individually by separate seed metering motors 230.
    [0044] [0044] Sweepers 249a, 249b are driven to rotate in opposite directions so that each paddle 250 sweeps a seed in a downward direction from the top to the bottom in relation to gravity. Thus, the seed loader 236 is a double seed loader.
    [0045] [0045] The seed loader 236 includes a single housing 248 rotatably mounted by bearings 265 and movable between a first position (fig. 19) and a second position (fig. 20), as described above in relation to the housing 148. As resources are given, the same reference numeral as the corresponding resources in the construction of figures 12-16 plus 100. The wall differs from wall 177, in which a wall 277a is arranged between scanners 249a, 249b and another wall 277b is arranged parallel to a wall 277a. Figures 19-20 illustrate in greater detail the walls 277a, 277b in action. The wall 277a overlaps on the seed delivery mechanism 32, when one of the sweepers 249a is working (as shown by the dashed in figure 19) and the other wall 277b overlaps on the seed delivery mechanism 32, when the other of sweepers 249 is working (as shown by the dashed line in Fig. 20). As described above, the walls 277a, 277b are generally arranged normal to the geometric axis of the loader B and arranged adjacent to their respective sweepers 249 in a downward direction as defined by the direction of movement of the seed delivery mechanism 32, which is shown arrows in figures 19-20. As such, housing 248 acts as a light swing to form a blocking wall (277a or 277b) so that the seed is deposited in the center of the brush belt 34, as described above. The housing 248 swings from side to side to have a wall 277a, 277b extending on the brush belt 34 from one side or the other, depending on the seed doser 22a, 22b that is working.
    [0046] [0046] In the construction of figures 23-27, two seed dosers 22a, 22b are coupled to each row unit frame 18 (see figure 27) in a similar manner to that described above with respect to figures 2-22. As shown in Figure 27, the first and second seed feeders 22a, 22b are generally arranged in parallel so that the respective feeder geometrical axes A1, A2 are generally parallel. In other constructions, the first and second feeders 22a, 22b can be arranged so that the respective feeder geometrical axes A1, A2 are generally coaxial or translationally offset, or the first and second feeders 22a, 22b can be tilted with relative to each other so that the geometrical axes of feeder A1, A2 are displaced by an included angle. In still other constructions, a single seed doser (22a or 22b) can be configured to selectively dose seeds from two or more different seed sources (for example, from tanks 13a-13c). In still other constructions, three or more seed metering units can be attached to each row unit frame 18.
    [0047] [0047] A seed loader 64 is coupled to the frame 18 of each row unit 14. The seed loader 64 includes a first wheel 66 disposed between the first seed feeder 22a and the seed delivery mechanism 32, and a second wheel 68 disposed between the second seed feeder 22b and the seed delivery mechanism 32 and offset from the first wheel 66. The first and second seed feeders 22a, 22b of the illustrated embodiment are generally arranged in parallel with each other, only for example, and the seed loader 64 is positioned to selectively receive dosed seeds from the first and second seed dosers 22a, 22b and transfer seeds to the seed delivery mechanism 32.
    [0048] [0048] The seed loader 64 cooperates with a loader deflector 80 disposed on, or integrally formed with a seed supply housing 72 to transfer the dosed seeds in the direction to the outlet location 42. The seed supply housing 72 includes a mounting portion 74 coupled to a receiving portion 76 of the seed delivery mechanism 32, near outlet location 42, where seed is received in the seed delivery mechanism 32. The seed delivery housing 72 can be coupled to the seed supply mechanism 32 by means of a coupling piece 78. In other constructions, the seed supply housing 72 can be coupled to the seed supply mechanism 32 by means of a snap fit, a fastener, or any other appropriate way. In still other constructions, the seed supply housing 72 may be formed with a housing of the seed supply mechanism 32.
    [0049] [0049] The loader deflector 80 includes a first arm 82 disposed adjacent to the first wheel 66, a second arm 84 disposed adjacent to the second wheel 68, and a supply opening 86 therebetween to facilitate the passage of seed to the delivery mechanism. seed supply 32. In other constructions, the seed supply housing 72 may include a single arm 82, 84 (for example, in the manner in which both wheels 66, 68 rotate in the same direction), and / or two or more supply openings, one for each of the first and second wheels 66, 68, respectively. In the illustrated embodiment, the arms 82, 84 define a chute 70 with opposite sides 71 between, and within which a periphery of each wheel 66, 68 is received and along which seeds are moved by the wheels 66, 68 for opening supply 86. The rail 70 can be of various lengths, depending at least in part on the circumferential distance between the pickup locations 40 and the supply opening 86, and can be of various widths, depending at least in part on the widths of the wheels 66, 68 Also, in some embodiments, the chute 70 is generally round in shape which is elongated in the vicinity of the delivery opening 86, in order to receive seeds from the wheels 66, 68, which are displaced (such as the wheels shown in the illustrated embodiment). of figures 23-27), while, in other modalities, the trough is round, in order to receive seeds from wheels 66, 68 which are coaxial.
    [0050] [0050] Returning to figures 23-27, the first arm 82 includes a curved or arched surface 94 that generally corresponds to the contour of the first wheel 66, and the second arm 84 includes a curved or arched surface 96 that generally corresponds to the contour of the second wheel 68. The first and second arms 82, 84 extend from the proximity of the catchment sites 40, adjacent to the first and second seed feeders 22a, 22b, respectively, up to the delivery opening 86. In other constructions, a single arm can be employed, and a single wheel can be arranged adjacent to the single seed feeder and used to transfer dosed seeds from the single seed feeder (22a or 22b) to the seed delivery mechanism 32.
    [0051] [0051] In the illustrated construction, the first and second wheels 66, 68 are mounted for rotation around the respective loader geometrical axes B1, B2, generally arranged perpendicular to at least one or both of the feeder geometrical axes A1, A2 . In some constructions, for example, when one or both of the first and second seed feeders 22a, 22b are slightly tilted, the loader geometry axes B1, B2 can be arranged transverse, but not necessarily perpendicular to the feeder geometry axes A1, A2. With reference to figures 24 and 25, the first and second wheels 66, 68 are rotatably mounted on the seed supply housing 72 on respective support portions 98 that extend from the seed supply housing 72. As illustrated in the figures 25 and 27, the first and second wheels 66, 68 are slightly offset from the center line C of the seed delivery mechanism 32 defined by the center line of the belt 34, so that seeds can be dropped substantially on the center line C of the belt 34 when the first and second wheels 66, 68 lose tangency with the belt 34. In other constructions, the first and second wheels 66, 68 can be coaxial and / or can be displaced from the center line C of the belt 34.
    [0052] [0052] As illustrated in greater detail in figure 26, each of the first and second wheels 66, 68 includes a hub portion 100 and a sweeper 102 extending from hub portion 100. Hub portion 100 is coupled to a geometry axis (not shown) for rotation with it around the respective loader geometry axis B1, B2, and can be driven in a similar manner to the seed loader 36, described above. For example, hub portion 100 may include a hexagonal opening 104 for engaging a hexagonal geometry axis (not shown).
    [0053] [0053] The sweeper illustrated 102 includes a brush having bristles extending radially from the hub portion 100 to sweep the seed from a seed doser 22a, 22b. The cards of the first and second wheels 66, 68 may slightly overlap the cards of the belt 34 (figure 27) to open the bristles of the sweeper 102 and / or belt 34 to assist in the transfer of the seeds. In place of the bristles, the sweeper 102 may also include other mechanisms for sweeping the seed, such as shovels, foam, resilient fingers, other brushes, etc.
    [0054] [0054] In operation, the first and second wheels 66, 68 sweep the seed from the first or second seed dosers 22a, 22b, respectively. The first and second wheels 66, 68 can sweep the seed up or down, depending on which way the sweeper 102 rotates (as described in more detail below). The first and second seed dosers 22a, 22b can be selectively operated in such a way that only one seed doser 22a, 22b doses the seeds at a time. In this way, the first and second seed feeders 22a, 22b can be controlled to provide a selected seed variety for the seed supply mechanism 32 for supply to ditch 15. In other constructions, both seed feeders 22a , 22b can be operable to dose seeds at the same time.
    [0055] [0055] More specifically, as illustrated in figures 24-27, the first and second wheels 66, 68 are configured to receive or sweep the seed from the respective seed feeders 22a, 22b at the catchment site 40. Each wheel 66 .68 rotates around the loader geometry axis B1, B2 to move the seed in a circumferential path around the loader geometry axis B1, B2 to transfer the seed to the seed delivery mechanism 32 at the exit location 42. O loader deflector 80 (specifically, the respective surface 94, 96) cooperates with the first and second wheels 66, 68 to guide the seed along the circumferential path to the supply opening 86.
    [0056] [0056] In a construction, the first and second wheels 66, 68 each rotate around the loader geometry axis B1, B2 in a single direction (for example, clockwise or counterclockwise). For example, the first wheel 66 rotates clockwise and the second wheel 68 rotates counterclockwise, or vice versa, or both the first and second wheels 66, 68 rotate in the same direction. As an example, and with reference to figure 26, if the first wheel 66 operates counterclockwise, the seed is picked up at the catchment location 40 of the first seed doser 22a and moved around the loader geometric axis B1 by about 90 degrees to the outlet location 42. If the second wheel 68 operates clockwise, the seed is picked up at the pickup location 40 of the second seed feeder 22b and moved around the loader geometric axis B2 by about 90 degrees to the exit location 42. The reverse or any combination of directions and configurations (for example, different angular distances) can also be employed, in which case the seed loader 64 can include close walls, and circumferentially extending around , upper portions of either or both wheels 66, 68 in a similar manner to the arms 82, 84 described above. In other constructions, the seed loader 64 can be oscillating, alternately movable, translatable, etc. In still other constructions, one, three, or more wheels can be used to feed seeds to one or more catchment sites 40 of the same seed loader. In such cases, the width of the seed loader (for example, the width of the arm 82 and / or the arm 84 can be increased or decreased, when necessary, to receive the periphery of the wheels.
    [0057] [0057] In the construction of figures 28-32, one, two, or more seed dosers 22a, 22b can be employed as described above with respect to figures 2-27. In the illustrated construction, the first and second seed dosers 22a, 22b (not shown) are each configured to drop a metered seed from the catchment site 40 into or near a respective pressure line 108a, 108b of a seed loader 106. A pressure duct 108a, 108b can be arranged adjacent to each seed feeder 22a, 22b or, alternatively, the seed loader 106 includes only a pressure duct in communication with a seed feeder (22a or 22b) in those applications that use only a single seed dispenser. The seed loader 106 includes a seed supply housing 110 positioned between the first and second seed feeders 22a, 22b and the seed supply mechanism 32 near outlet location 42 (as described above with reference to figures 22- 26). The seed supply housing 110 is integrated with, or integrally formed as a single piece, with at least the portion of the first pressure conduit 108a and the second pressure conduit 108b, although in other embodiments these members may be separate pieces connected together in any appropriate way. The seed supply housing 110, illustrated, is coupled to the seed supply mechanism 32 by means of a coupling piece 122. However, in other constructions, the seed supply housing 110 may be coupled to the seed supply mechanism. 32 by means of a snap fit, a fastener, or in any other appropriate manner. The seed supply housing 110 is further configured to be coupled to a pressure differential device (not shown), such as an air pump or vacuum pump. Either positive pressure or negative pressure can be used.
    [0058] [0058] As indicated by the arrows in figures 30 and 31, the seed supply housing 110 can be coupled to a vacuum source by means of a suction tube 112. Thus, the first and second pressure lines 108a, 108b , which extend to and end near the exit point 42 (see figure 32), are subjected to a vacuum to pull the dosed seeds from the first or second seed doser 22a, 22b. As shown in figure 29, a screen 114 is arranged near the end of the suction tube 112 to inhibit seeds from entering the suction tube 112. Also, a sealing edge 116 is provided to seal the seed supply housing 110 to a housing the seed supply mechanism. It will be appreciated that the shape and configuration of the seed supply housing 110 can be changed in a number of different ways to define a sealed interface between the seed supply housing 110 and the housing of the seed supply mechanism. A liner 118 can be provided, as shown in figure 30, having an opening 120 positioned close to the outlet location 42 to encourage seed entry into the seed supply mechanism 32 at the outlet location 42. The liner 118 can be made of a metal or other suitable low-wear material to inhibit wear on the seed supply casing 110 when the belt 34 and the seeds pass along it. The liner 118 can also act as a primary screen or protection against the entry of seed into the suction tube 112.
    [0059] [0059] In other constructions, a positive pressure can be used in place of, or in addition to, the vacuum pressure described above to propel the dosed seeds to pass along the pressure ducts 108a, 108b into the seed delivery mechanism 32. In those constructions, in which no vacuum pressure is used, suction tube 112 is not necessary, and positive pressure is supplied to the seed supply mechanism 32 (for example, to the seed supply housing 110) by means of an air pump or other device positioned and operable to produce a positive pressure source for the pressure ducts 108a, 108b. Positive pressure can be discharged naturally through cracks in the seed supply mechanism 32, or an exhaust vent (not shown) can be provided in the seed supply mechanism 32 or in the seed supply housing 110. As noted above , in yet other embodiments, both a source of positive pressure and a source of negative pressure (vacuum) can be used simultaneously with the seed loader 106.
    [0060] [0060] Although two pressure ducts 108a, 108b are used in the manner illustrated in figures 28-32, each of which extends to a respective seed doser that feeds the pressure ducts 108a, 108b with metered seed, it should be noted that any number of pressure conduits 108a, 108b can be provided in the seed supply housing 110 to supply metered seed to the seed supply mechanism 32. For example, the seed carrier 106 may have a single pressure conduit 108a which feeds seed to the seed supply mechanism 32. In other embodiments, three or more pressure conduits 108a, 108b can feed seed to the seed supply mechanism 32. Pressure conduits 108a, 108b (in any number) can terminate, each at, or close to, exit location 42, in the illustrated embodiment, to provide seed for exit location 42, or may end at one or more other exit locations 42 positioned close by to the periphery of the seed supply mechanism 32. In this regard, any number of outlet locations are possible for any number of pressure conduits 108a, 108b of the seed supply housing 110. Also, one or more of the pressure conduits 108a , 108b can be fed by two or more seed feeders upstream, as in the case where two or more seed feeders provide for a common seed inlet, which leads to the same pressure conduit 108a or 108b.
    [0061] [0061] Thus, the description provides, among other things, a seed loader to selectively transfer seeds from one, two or more seed feeders to a seed supply mechanism, so that a single seed supply mechanism (ie ie, for a single row unit in the sowing machine) it is configured to selectively deposit one, two, or more varieties of seed.
    权利要求:
    Claims (20)
    [0001]
    Row unit (14) for a sowing machine (10), characterized by the fact that it comprises: a first seed metering device (22a) having a first metering member (24) to single out seeds (S1); a second seed doser (22b) having a second dosing member (24) for singling out seeds (S2); and a motor (130) operably coupled to the first and second seed feeder (22a, 22b) to selectively drive the first seed feeder (22a) or the second seed feeder (22b).
    [0002]
    Row unit (14) for a sowing machine (10) according to claim 1, characterized by the fact that a motor output (130) is reversible to selectively drive the first or second seed feeder (22a, 22b) .
    [0003]
    Row unit (14) for a sowing machine (10) according to claim 2, characterized by the fact that the motor (130) is a reversible motor configured to drive the first seed dispenser (22a) when operating in a first direction of the engine and to activate the second seed feeder (22b) when operating in a second engine direction.
    [0004]
    Row unit (14) for a sowing machine (10) according to claim 2, characterized in that the engine (130) is a unidirectional engine, the row unit (14) additionally comprises a reverser to selectively revert the motor direction (130).
    [0005]
    Row unit (14) for a sowing machine (10) according to claim 1, characterized in that it additionally comprises a seed loader (36, 136, 236) in which the motor (130) is operationally coupled to activate the seed loader (36, 136, 236) in conjunction with the first or second seed feeder (22a, 22b) selected.
    [0006]
    Row unit (14) for a sowing machine (10) according to claim 1, characterized in that it additionally comprises: at least one axis (144) disposed between the motor (130) and at least one of the first or second seed feeder (22a, 22b); and a mechanical actuator (158) coupled to the shaft (144) and configured to selectively operationally couple the motor (130) to the first seed feeder (22a) in a first mode and selectively operationally couple the motor (130) to the second seed feeder ( 22b) in a second mode.
    [0007]
    Row unit (14) for a sowing machine (10) according to claim 6, characterized in that the first mode is carried out by operating a motor outlet in a first direction and the second mode is carried out by operation a motor output in a second direction, where the mechanical drive (158) includes a first unidirectional clutch (181a) disposed between the shaft (144) and the first seed metering device (22a) and a second unidirectional clutch (181b) disposed between the axis (144) and the second seed doser (22b).
    [0008]
    Row unit (14) for a sowing machine (10) according to claim 1, characterized by the fact that it additionally comprises a mechanical drive (158) disposed between the engine (130) and the first and second seed feeders (22a, 22b), the mechanical drive (158) configured to selectively operationally couple the engine (130) to the first seed feeder (22a) in a first mode and selectively operationally couple the engine (130) to the second seed feeder in one second mode.
    [0009]
    Row unit (14) for a sowing machine (10) according to claim 8, characterized by the fact that the first mode is carried out by operating the engine outlet in a first direction and the second mode is carried out by operating the engine output in a second direction.
    [0010]
    Row unit (14) for a sowing machine (10) according to claim 9, characterized in that the mechanical drive (158) includes a first unidirectional clutch (181a) disposed between the axis (144) and the first seed doser (22a) and a second unidirectional clutch (181b) disposed between the shaft (144) and the second seed doser (22b).
    [0011]
    Row unit (14) for a sowing machine (10) according to claim 1, characterized in that it additionally comprises: a seed carrier (36, 136, 236) arranged in communication with the first and second seed dosers (22a, 22b), to receive the seeds (S1, S2) from a first or second seed bank; and a mechanical drive (158) selectively coupling the engine (130) to the first and second seed feeder (22a, 22b), where the mechanical drive (158) operatively couples the engine (130) to one of the first or second seed feeder (22a, 22b) and simultaneously operatively couples the motor (130) to the seed loader (36, 136, 236).
    [0012]
    Row unit (14) for a sowing machine (10) according to claim 11, characterized by the fact that the mechanical drive (158) is operable for temporal movement of the seed loader (36, 136, 236) with movement of one of the first or second seed doser (22a, 22b).
    [0013]
    Row unit (14) for a sowing machine (10) according to claim 12, characterized in that the mechanical drive (158) includes gears (179a, 179b) for timing the movement of the seed loader (36, 136, 236) and unidirectional clutches to selectively couple the engine to the first and second seed feeders (22a, 22b).
    [0014]
    Row unit (14) for a sowing machine (10), characterized by the fact that it comprises: a first seed reservoir (28) to contain a first variety of seeds (S1); a second seed reservoir (28) for containing a second seed variety (S2); a seed doser assembly (16) in communication with the first and second seed reservoirs (28) to selectively move the seeds (S1, S2) from the first seed reservoir (28) or the second seed reservoir (28); and a motor (130) operationally coupled to the seed doser assembly (16) to selectively drive the seed movement (S1, S2) of the first seed reservoir (28) or the second seed reservoir (28).
    [0015]
    Row unit (14) for a sowing machine (10) according to claim 14, characterized in that the seed doser assembly (16) includes a first dosing member (24) for moving seeds (S1, S2) from the first seed reservoir (28) and a second dosing member (24) to move seeds (S1, S2) from the second seed reservoir (28).
    [0016]
    Row unit (14) for a sowing machine (10) according to claim 14, characterized in that it additionally comprises a seed loader (36, 136, 236) in communication with the seed doser assembly (16 ), the seed loader (36, 136, 236) including a first opening for receiving seeds (S1, S2) from the first seed reservoir (28) and a second opening for receiving seeds (S1, S2) from the second seed reservoir (28).
    [0017]
    Row unit (14) for a sowing machine (10) according to claim 14, characterized by the fact that a motor output (130) is reversible to selectively trigger the movement of the seeds (S1, S2).
    [0018]
    Row unit (14) for a sowing machine (10) according to claim 14, characterized in that it additionally comprises: a mechanical drive (158) disposed between the motor (130) and the seed metering assembly (16), the mechanical drive (158) configured to selectively operationally couple the motor (130) to the seed metering assembly (16) in a first mode and to trigger the movement of seeds (S1) from the first seed reservoir (28) and selectively operationally couple the motor (130) to the seed dosing assembly (16) in a second mode to drive seed movement (S2) from the second seed reservoir (28).
    [0019]
    Row unit (14) for a sowing machine (10) according to claim 18, characterized in that the first mode is carried out by operating a motor outlet in a first direction and the second mode is carried out by operation of an engine outlet in a second direction.
    [0020]
    Row unit (14) for a sowing machine (10) according to claim 19, characterized by the fact that the mechanical drive (158) includes a first unidirectional clutch arranged between the engine and the seed dosing assembly (16) and a second unidirectional clutch arranged between the shaft (144) and the seed dosing assembly (16).
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    同族专利:
    公开号 | 公开日
    EP3017672B1|2018-04-11|
    US20160128268A1|2016-05-12|
    BR102015027943A2|2016-05-24|
    EP3017672A1|2016-05-11|
    US9801328B2|2017-10-31|
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    法律状态:
    2016-05-24| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-11-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-08-27| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-03-02| B09A| Decision: intention to grant|
    2021-04-06| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 05/11/2015, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201462077030P| true| 2014-11-07|2014-11-07|
    US62/077030|2014-11-07|
    US14/869708|2015-09-29|
    US14/869,708|US9801328B2|2014-11-07|2015-09-29|Row unit for a seeding machine with dual seed meters|
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