• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    the present invention relates to an apparatus, systems and methods for delivering seed from a measuring device to a groove.
    公开号:BR112016004333B1
    申请号:R112016004333-2
    申请日:2014-08-29
    公开日:2020-05-12
    发明作者:Ian Radtke
    申请人:Precision Planting Llc；
    IPC主号:
    专利说明:

    Descriptive Report of the Invention Patent for APPLIANCE FOR DISTRIBUTION OF A SEED ON A PLANTATION SURFACE.
    BACKGROUND [001] In recent years, the agricultural industry has recognized the need to carry out planting operations more quickly due to the limited time during which such planting operations are agronomically preferable, or (in some growing periods) still possible due to inclement weather. . However, removing a planting implement across the field at faster speeds increases the speed of seed deposited relative to the soil, causing the seeds to roll and bounce after landing in the furrow, resulting in inconsistent plant spacing. The adverse agronomic effects of poor seed placement and inconsistent plant spacing are well known in the art.
    [002] As such, there is a need for an apparatus, systems and methods to effectively distribute seed to the groove, while maintaining seed placement accuracy at both low and high implement speeds.
    BRIEF DESCRIPTION OF THE DRAWINGS [003] FIG. 1 is a left elevation view of a prior art row unit of a row agricultural planter.
    [004] FIG. 2 is a right elevation view of an embodiment of a row unit including a seed conveyor.
    [005] FIG. 3 is a right elevation view of the row unit of FIG. 2 with additional components removed for the purpose of illustration.
    [006] FIG. 4 is a rear perspective view of the
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    2/24 row of FIG. 2 with additional components removed for the purpose of illustration.
    [007] FIG. 5 is a left elevation view of an embodiment of a seed meter, and an embodiment of a seed conveyor of the row unit of FIG. 2.
    [008] FIG. 6Α is an enlarged left elevation view of an embodiment of a lower pulley.
    [009] FIG. 6Β is an enlarged left elevation view of another embodiment of a lower pulley.
    [0010] FIG. 7 is an enlarged right elevation view of an embodiment of a loading wheel assembly, and an embodiment of a seed disc.
    [0011] FIG. 8 is an enlarged top perspective view of the loading wheel assembly of FIG. 7.
    [0012] FIG. 9 is an enlarged bottom perspective view of the loading wheel assembly of FIG. 7.
    [0013] FIG. 10 is a right elevation view of the loading wheel assembly embodiment of FIG. 7, and another embodiment of a seed disk.
    [0014] FIG. 11 is a right elevation view of another embodiment of a loading wheel assembly.
    [0015] FIG. 12 is an enlarged left perspective view of a lower portion of the seed carrier of FIG. 2.
    [0016] FIG. 13 is an enlarged right perspective view of a lower portion of the seed carrier of FIG. 2.
    [0017] FIG. 14 is an enlarged side elevation view of the embodiment of the loading wheel assembly of FIG. 10 and a guide brush assembly.
    [0018] FIG. 15 is an enlarged rear elevation view of the loading wheel and guide brush assembly of FIG. 14.
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    3/24 [0019] FIG. 16 is a left elevation view of an embodiment of a row unit incorporating an embodiment of a seed conveyor, and an embodiment of a seed meter.
    [0020] FIG. 17 is a right elevation view of the row unit of FIG. 16.
    [0021] FIG. 18 is an enlarged partial right elevation view of the row unit of FIG. 17.
    [0022] FIG. 19 is a left elevation view of a side seed housing of the seed meter of FIG. 16.
    [0023] FIG. 20 is a view of a portion of the row unit as seen along lines 20-20 of FIG. 18.
    [0024] FIG. 21 is an expanded left elevation view of the row unit of FIG. 16 with certain components removed.
    [0025] FIG. 22 is a front elevation view of an embodiment of a seed carrier and seed sensor.
    [0026] FIG. 23 is a side elevation view of an embodiment of a seed conveyor having a third pulley.
    [0027] FIG. 24 is a side elevation view of another embodiment of a loading wheel assembly having a guide insert.
    DESCRIPTION [0028] Referring now to the drawings, in which similar reference numerals designate identical or corresponding parts across all the various views, FIG. 1 illustrates a side elevation view of a single row unit 10 of a conventional row cultivation planter, such as the type described in United States Patent No. 7,438,006, the disclosure of which is thereby incorporated by reference. As is well known in the art, row units 10 are mounted in spaced relation along the
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    4/24 length of a transverse tool bar 12 by a parallel connection 14, comprised of upper and lower parallel arms 16, 18 pivotally mounted at its ends front to the transverse tool bar 12, and at its rear end to the unit structure of row 20. The parallel link 14 allows each row unit 10 to move vertically independently of the tool bar 12 and the other row units spaced apart to accommodate changes in terrain or rocks, or other obstructions encountered by the row unit to the as the planter is pulled through the field.
    [0029] The row unit structure 20 operably supports a seed hopper 23 which can be adapted to receive seeds from a volume hopper (not shown), a seed meter 26 and a seed tube 28, as well as an assembly groove opener 30 and groove close assembly 40. Groove opener assembly 30 comprises a pair of groove opener discs 32 and a pair of gauge wheels 34. Gauge wheels 34 are pivotally secured to the row unit structure 20 by measuring wheel arms 36. A spiral spring 50 is disposed between parallel arms 16, 18 to provide additional downward force to ensure that the grooving discs 32 fully penetrate the soil to the desired depth, as placed, by an adjusting member depth (not shown), and to provide soil compaction for correct groove formation. Preferably than a spiral spring, the supplementary downward force can be provided by actuators, or other suitable means, such as disclosed in United States Patent No. 6,389,999 to Duello, the full disclosure of which is thereby incorporated herein by reference.
    [0030] In operation, as row unit 10 is lowered
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    5/24 opened to the planting position, the opening discs 32 penetrate the soil. At the same time, the ground forces the gauge wheels 34 to pivot upwardly until the gauge wheel arms 36 touch or come into contact with the previously set stop position with the groove depth adjustment member (not shown), or even that a static load balance is achieved between the vertical load of the row unit and the ground reaction. As the planter is pulled forward in the direction indicated by arrow 39, the grooving discs cut a V-60 groove in the soil, while the measuring wheels 34 compact the soil to assist in the formation of the groove. V. The individual seeds 62 from the seed hopper 23 are dispensed by the seed meter 26 in an upper opening in the seed tube 28 in evenly spaced increments. The seeds 62 fall through the seed tube 28, the seeds move downwardly and backward between the groove-opening disks 32 and at the bottom of the V-shaped groove 60. The groove 60 is then covered with soil, and lightly compacted by groove closure assembly 40.
    [0031] It should be appreciated that because the seeds 62 fall freely through the seed tube 28 in row unit 10 described above, the seed displacement path, and the seed speed at the seed tube outlet, are relatively unrestricted . It would be preferable to restrict the seed displacement path 62 in order to reduce errors in seed spacing; that is, placing seeds in the field in uneven spacing. In addition, it would be preferable to control the seed speed 62, such that the seeds have a decreased horizontal speed relative to the soil after loading into the furrow 60.
    [0032] Referring to FIGs. 2 to 4, a row unit 100 including a seed conveyor 200 is illustrated. The unit of
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    6/24 row 100 preferably includes a metering wheel assembly 130 and left and right opening discs 312 arranged to open a seed trench 60; a depth control assembly 180 preferably controls the height of the measuring wheels of the measuring wheel assembly 130 relative to the opening discs 132. Row unit 100 preferably includes a row unit structure 120. The structure row unit preferably includes mounting hinges 117, 119 for mounting row unit structure 120 to a parallel arm arrangement. The row unit structure 120 preferably includes a rear assembly 141 for pivotally mounting a closing wheel assembly (not shown) configured to close the seed trench
    60. The row unit structure 120 preferably includes a downwardly extending spike 160 to which the opening discs 132 are rotatably mounted.
    [0033] A seed meter 300 is mounted to the row unit structure 120. The seed meter 300 is preferably driven by a motor 310, as described in copending United States Patent Application No. 13/804630 and Copending International Patent Application of Applicant No. PCT / US2013 / 051971 (application '971), descriptions of both of which are incorporated herein in their entirety by reference.
    [0034] Seed carrier 200 is preferably mounted to row unit 100, as described in Applicant's International Patent Application copending by Applicant No. PCT / US2012 / 057327 (application '327) and / or Provisional Patent Application United States No. 61/872319, descriptions of both of which are incorporated herein in their entirety by reference. A resilient seal 124 preferably seals a gap between the seed conveyor 200 and the row unit structure 120. The seed conveyor 200
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    7/24 is in seed communication with the seed meter 300. The seed conveyor 200 is preferably driven by a motor 210. Motor 210 preferably comprises an electric motor operably coupled to a gearbox. Motor 210 is preferably in electrical communication with and controlled by a control module 212.
    [0035] Referring to FIG. 22, the seed carrier 200 preferably includes a seed sensor 2200 arranged to detect seed passage. The 2200 seed sensor preferably comprises a 2210 transmitter configured to send electromagnetic energy (for example, light) towards a 2220 receiver. As illustrated, the 2210 transmitter is preferably arranged to illuminate a region through which seeds and strips preferably pass through an opening 246 in a first side wall of the cover of the conveyor 240. The sensor 2200 is preferably arranged to detect seeds descending downward on the conveyor 200, for example, adjacent to a front portion of the belt 220. The receiver 2220 is preferably arranged in an opening 248 in a second side wall opposite the cover of the carrier 240. The passage of the seeds 62 obstructs the light transmitted to the receiver, such that the receiver generates a pulse of seed; the receiver is preferably in data communication with the monitor, which is preferably configured to process, record time, and store pulses. In preferred embodiments, the receiver 2220 includes a lens 2222 (e.g., quartz lens). In some embodiments, the lens is covered with a hydrophobic coating. In some embodiments, a portion of the receiver 2220 (e.g., the lens 222, or a portion thereof) extends within the cover of the carrier 240; in such embodiments, a clearing move 223 (or a plurality of moves) is preferably arranged (for
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    8/24 example, as they are slightly wider than the remaining bids) to count the 2220 receiver (for example, the inner surface of the lens) in order to clean up foreign material from the receiver as the cleaner pass through the receiver . In some embodiments, the transmitter may also include a lens (not shown) arranged to be contacted by one or more bids from the carrier. [0036] A guard 190 is preferably removably mounted on the spike 160. A portion extending behind 192 of the guard 190 preferably extends between a lower end of the seed conveyor 200 and the bottom of the trench 60. The rearwardly extending portion 192 is thus arranged to protect the seed carrier 200 from contact with the bottom of the trench 60, or from other objects that can damage the seed carrier. A lower surface of the rearwardly extending portion 192 is preferably arranged at a height close to the lower extension of the opening discs 132, such that the guard 190 forms the bottom of the trench 60 in operation. In other embodiments, the lower surface of the rearwardly extending portion 192 is arranged at a height above (for example, between 0.1 and 1 inch above) the lower extension of the opening discs, such that the guard 190 is positioned above and vertically adjacent to the bottom of trench 60 in operation. The protector 190 preferably includes inserts 194 arranged on either side of the protector; inserts 194 are preferably arranged to protect the seed carrier 200 from contact with the opening discs 132. Inserts 194 preferably comprise a relatively hard material, such as tungsten carbide, while the rest of the protector 190 preferably comprises a relatively hard metal.
    [0037] A seed firming assembly 170 is preferably mounted on the spike 160. The seed firming assembly 170,
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    9/24 preferably includes a firming support 172 and a seed firming 174. Preferably, the firming support 172 extends around the seed conveyor 200, and supports the seed firmer 174 behind the seed conveyor. The seed firmer 174 is preferably configured to press seeds at the bottom of trench 60; the seed firmer 174 preferably comprises one of the seed firmer of the embodiments disclosed in United States Patent No. 7,497,174, the disclosure of which is thus hereby incorporated in its entirety by reference.
    [0038] Returning to FIG. 5, the seed conveyor 200 is illustrated in more detail. The seed conveyor 200 preferably includes a belt 220 including a plurality of strokes 222 spaced to receive seeds. Each move 222 preferably includes a chamfer 223 (see FIG. 6A); Each chamfer 223 preferably deviates from the direction of travel of the throw. The seed carrier 200 preferably includes a lid 240, preferably comprising a left portion and a right portion; the left portion of the cap 240 is removed in FIGs. 5, 6A and 6Β, in order to illustrate the belt 220. Referring to FIG. 6A, in operation, the seeds are transported down to a front side of the belt 220 between the strips 222. The seeds are preferably released from an opening 242 to a lower end of the lid 240. The seeds are preferably released in a rear path (preferably guided by a lower surface 244 of the cover 240); thus, the seeds have a lower horizontal speed relative to the trench 60 after being released from the seed carrier 200 than when released from the seed meter 300.
    Pulley Embodiments [0039] Referring to FIGs. 5 and 7, belt 220 is preferably
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    10/24 coia, operatively coupled to an upper pulley 260 and a lower pulley 250 for transportation over the upper pulley and the lower pulley. The upper pulley 260 is preferably rotationally driven by the motor 210. Referring to FIG. 8, the upper pulley 260 preferably includes a plurality of radially arranged notches 262 configured to engage corresponding slits 226 formed in the belt 220 between each run 222. In operation, the upper pulley 260 preferably drives the belt 220 by engagement sequentially between slots 226 and notches 262. Each slot 226 preferably extends across the full width of belt 220. Each slot 262 preferably extends through belt 220 when the notch is engaged in slot 226, such as that an outer end of the notch extends out of the belt.
    [0040] Returning to FIG. 6Α, a first detailed embodiment of a lower pulley 250 'is illustrated. The lower pulley 250 'preferably comprises a radial surface 253 rigidly mounted to an inner wheel 254. The radial outer surface 253 preferably comprises a relatively rigid material, such as plastic. The outer radial surface 253 preferably includes a plurality of radially arranged notches 252 configured to engage corresponding slits 226 formed in the belt 220. The inner wheel 254 preferably comprises a relatively elastic material, such as rubber. The inner wheel 254 preferably includes a plurality of radii 255 radially arranged in a sweeping arrangement. The inner wheel 254 of the lower pulley 250 'is preferably mounted on a bearing 256. The bearing 256 is preferably mounted on the cover 240 by a screw 258. When spokes 255 are in a relaxed state (not deflected) , the radial outer surface 253 rotates on a central axis of the bearing 256. The tension on the belt 220 gives an upward force on the lower pulley 250 ', such that the spokes 254 are deflected
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    11/24 dos, and the radial outer surface 253 is deflected upward, and the radial outer surface rotates about an axis above the central axis of the bearing 256. The tension on the belt 220 after installation is preferably selected such that the spokes 255 are preferably partially deflected; thus, the rotational axis of the radial outer surface 253 is allowed to float up and down to retain consistent tension on the belt 220 as component wear, or deform over time. In this way, pulley 250 'is configured to deform to resiliently retain consistent belt tension.
    [0041] Returning to FIG. 6Β, a second detailed embodiment of a lower pulley 250 preferably comprises a relatively hard material, such as plastic. In such an embodiment, it should be appreciated that the lower pulley 250 is unable to deform to compensate for changes in belt tension 220; therefore, in such an embodiment, the lower pulley 250 is preferably resiliently mounted on the cover 240. In the illustrated embodiment, the seed conveyor 200 includes a spring mounting assembly 280. The spring assembly 200 includes a sliding member 286 slidingly received in a cavity 288. The lower pulley 250 is preferably rotatably mounted to the sliding member 286 on a bearing 256. The bearing 256 is preferably mounted on the sliding member by a screw 258. The belt 220 engages and imposes an upward force on the pulley 250. The upward force imposed by the belt on the pulley 250 is transmitted to the slide member 286. The upward force on the slide member 286 is preferably counterbalanced by the downward force imposed on the slide member 286 by a spring 284. The position of the spring 284 is preferably maintained by a pocket 282 on the cover 240, and by a stem 285 mounted on the sliding member 286. It should be appreciated that q u and the downward force imposed by spring 284 increases as the
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    12/24 lower pulley 250 is deflected upwards. The spring 284 is preferably partially deflected after installation of the belt 222, such that the lower pulley 250 is able to deflect or float up and down to retain consistent tension on the belt 220.
    [0042] Continuing to refer to FIG. 6Β, a screw 289 is preferably received by a threaded hole in the slide member 286. The slide member 286 can be selectively locked in a fixed position relative to the cavity 288 by advancing the screw 289 in contact with the cover 240. In some embodiments, the slide member 286 is locked in place after installation (after the spring mounting assembly 280 has reached a state of balance. In other embodiments, the slide member is allowed to move freely in operation.
    [0043] In an alternative embodiment of carrier 2300 illustrated in FIG. 23, the belt 220 is arranged to rotate on the upper pulley 260, the lower pulley 250 and the third pulley 2310. The throws 222 preferably pass on the third pulley 2310 after the passage of the lower pulley 250 and before the passage of the upper pulley 260 The third pulley 2310 is preferably arranged at a lower height than the upper pulley, and higher than the lower pulley. The center of the third pulley 2310 is preferably arranged behind an axis defined by the centers of the upper and lower pulley. Strokes 222 preferably accelerate when rounding the third pulley 2310. In this way, the third pulley 2310 is preferably arranged to propel the debris or liquid between the strips 222 away from the belt by centrifugal force as the strokes pass the third pulley. Loading Wheel Assembly Embodiments [0044] Referring to FIGs. 7 to 9, the seed conveyor
    200 preferably includes a loading wheel assembly 400. The loading wheel assembly 400 is preferably con
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    13/24 figured to remove seeds from the seed meter and transfer them to the seed conveyor 200.
    [0045] A brief description of the seed meter operation
    300 is useful in describing its cooperation with the seed conveyor 200, specifically the loading wheel assembly 400. The seed meter 300 includes a seed disk 320 having a plurality of radially arranged seed openings 322. As described in more details in order '971 incorporated by reference above, the seed meter 300 is preferably configured to drag a seed into each seed opening (preferably by imposing a vacuum on one side of the openings) and releasing the seed at a release point (preferably by cutting the imposed vacuum), preferably at approximately the 3 o'clock position as seen from the perspective of FIG. 7. The openings 322 move the seeds along a seed path. The seed path is preferably a semicircular path defined by the positions of the openings 322. As seen from the perspective of FIG. 7, the seeds move in a clockwise direction along the seed path.
    [0046] The loading wheel assembly 400 is preferably configured to remove seeds from the seed disk 320 at a location along the path of the seed, preferably before the release point. In the embodiment of FIG. 7, the loading wheel assembly 400 includes a first loading wheel 410 and a second loading wheel 420. The first loading wheel 410 and the second loading wheel 420 are preferably arranged on opposite sides of the seed path. . The first loading wheel 410 preferably has a smaller effective circumference than the second loading wheel 420. The loading wheels 410, 420 are preferably
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    14/24 driven for rotation on hubs 414, 424 by engine 210. Loading wheels 410, 420 are preferably driven in opposite rotational directions. As seen from the perspective of FIG. 7, the first loading wheel 410 is driven for clockwise rotation, and the second loading wheel 420 is driven for counterclockwise rotation. In operation, the seeds that pass through a gap between the loading wheels 410, 420 are grabbed between the loading wheels and ejected down towards the seed conveyor 200. As seen from the perspective of FIG. 7, the seeds enter the seed conveyor 200 above the upper pulley 260, and are transported down on the right side of the seed conveyor. The clearance between the loading wheels 410, 420 is preferably dimensioned to grasp the seeds; for example, in some embodiments, the gap is slightly less than a minimum seed width.
    [0047] In the embodiment of FIGs. 7-9, the seed disk 320 includes a single row of seed openings 322 that defines a seed path; the seed path preferably intersects a gap between the loading wheels 410, 420. Returning to FIG. 10, an alternate seed disk 320 'includes an outer row of outer seed openings 324 and an inner row of inner seed openings 326. The outer row defines an outer seed path displaced by the entrained seeds in the outer seed openings 324. The inner row defines an inner seed path displaced by the seeds dragged into the inner seed openings 326. The outer seed path preferably intersects the gap between the loading wheels 410, 420. The inner seed path, preferably, intersects the first loading wheel 410; the seeds in the inner seed openings 326 are guided by rotation of the first loading wheel 410 in folPetition 870190105568, of 10/18/2019, p. 18/36
    15/24 ga between the loading wheels 410, 420.
    [0048] An alternative loading wheel assembly 400 'illustrated in FIG. 24 comprises loading wheel 420 and a guide insert 2400 having a guide surface 2410. The guide surface 2410 is preferably arranged to guide seeds in the seed openings towards a gap 2420 between the guide surface 2410 and the loading wheel 420. In operation, the seeds that enter the gap 2420 are preferably lightly compressed between the loading wheel 420 and the surface 2410, and are then ejected on the belt 220 between moves 222 preferably in front of a vertical plane defined by the rotational axis of the upper pulley 260. As shown in FIG. 24, the alternative loading wheel assembly 400 'is used in cooperation with the seed disk 320'; however, it should be appreciated that the alternative loading wheel assembly 400 'can be used in cooperation with other seed discs, such as the seed disc 320.
    [0049] Returning to the embodiment of FIGs. 7-9, loading wheels 410, 420 include a plurality of circumferential jaws 412, 422, respectively. The jaws 412, 422 are preferably oriented in a direction opposite to the direction of rotation of their respective loading wheels 410, 420. In this way, the jaws 412, 422 are oriented in a back-scan orientation. As best illustrated in FIG. 8, each jaw 422 of the second loading wheel 420 preferably comprises three axially aligned jaws 422-1,422-2, 422-3 having axial clearances between them.
    [0050] The claws 412, 422 of the loading wheel 410, 420 are preferably rotationally oriented in synchronized orientations; for example, such that when a claw 412 is in its position closest to the central axis of the loading wheel 420, a corresponding claw 422 is in its position closest to the
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    16/24 central axis of loading wheel 410. Motor 210 preferably drives loading wheels 410, 420 at synchronized rates (for example, at the same rate in terms of revolutions per minute), such as the loading wheels remain synchronized as described above during operation. In other embodiments, jaws 412, 422 are oriented in unsynchronized orientations.
    [0051] Returning to FIG. 11, an alternative loading wheel assembly 500 preferably includes a first loading wheel 510 and a second loading wheel 520. The first loading wheel 510 preferably includes a row of circumferentially arranged large teeth 518, and a row of small circumferentially arranged teeth 516. Each small tooth 516 is preferably disposed between two large teeth 518 along the circumference of the first loading wheel 510. The second loading wheel 520 preferably includes a row of teeth large circumferentially arranged teeth 528, and a row of small circumferentially arranged teeth 526. Each small tooth 526 is preferably disposed between two large teeth 528 along the circumference of the second loading wheel 520. The second loading wheel, preferably, includes axial clearances similar to axial clearances on second loading wheel 420 for interaction with guide 430 described below.
    Embodiments of the Guide [0052] Referring to FIGs. 7-9, the loading wheel assembly 400 preferably includes a guide 430. Guide 430 preferably includes a plurality of laterally spaced fins 4321, 432-2, 432-3. The fin 432-1 extends between the claws 422-1 and 422-2 of the loading wheel 420. The fin 432-2 extends between the claws 422-2 and 422-3 of the loading wheel 420. In operation, the As the loading wheel 420 turns, the claws 422-2 pass
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    17/24 sam between fins 432-1 and 432-2. In operation, as the loading wheel 420 rotates, the claws 422-3 pass between the fins 4322 and 432-3. A curved inner surface of each fin 432 is preferably arranged such that a plane tangential to the curved inner surface extends between a circumference of the loading wheel 420 and a center of the loading wheel 420. The guide 430 is preferably comprises three substantially identical portions 435. Each portion 435 preferably includes an arcuate surface 436; the arcuate surface 436 is preferably concave with respect to the seeds moving in the seed carrier 200. Each arcuate surface 436 preferably ends at an upper end on an angled surface 437. The angled surface 437 of the portion 435- 3 preferably extends between fins 432-2, 432-3; and the angled surface 437 of portion 435-2 preferably extends between fins 432-1, 432-2. The guide 430 preferably comprises a relatively hard material, such as metal, and preferably comprises powdered metal.
    [0053] In operation, as the seeds are communicated on the seed conveyor 200, the path of the seeds ejected by the loading wheels 410, 420 tends to cause the seeds to contact the guide 430. As the seeds contact the guide 430, they are guided downwards on the right side of the seed conveyor 200 (as seen from the perspective of FIG. 7) by the fins 432 and the arched surfaces 436, respectively.
    [0054] The loading wheel assembly 500 illustrated in FIG.
    11 preferably also includes a guide 430 that interacts with the second loading wheel 520 as described above with respect to the second loading wheel 420.
    Brush Embodiments [0055] Returning to FIGs. 14 and 15, a brush assembly
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    18/24 guide 1400 adjacent to seed disk 320 'is illustrated. It should be appreciated that the guide brush assembly 1400 can also be used in cooperation with the single row seed disc 320.
    [0056] The guide brush assembly 1400 preferably includes an external brush 1410 and an internal brush 1420. Brushes 1410, 1420 are preferably positioned adjacent to the seed disk 320 ', and above the gap between the loading wheels 410, 420. The outer brush 1410 preferably comprises a clamp 1412 that holds a set of resilient bristle 1414. The inner brush 1420 preferably comprises a clamp 1422 that holds a set of resilient bristle 1424. The brushes 1410, 1420 are preferably oriented, such that the resilient bristle assemblies 1414, 1424 approach each other along the path displaced by the seeds that approach the loading wheel assembly 400. The brushes 1410, 1420, In this way, they guide the seeds in the gap between the loading wheels 410, 420.
    [0057] The guide brush assembly 1400 preferably additionally includes a side brush 1430. The side brush 1430 is preferably positioned adjacent to the seed disk 320 'and above the clearance between the loading wheels 410, 420 The side brush 1430 preferably comprises a clamp 1432 that holds a resilient bristle assembly 1434. The side brush 1430 is preferably oriented such that a lower end of the resilient bristle assembly 1434 is closer to the seed disk. 320 'than an upper end of the resilient bristle assembly 1434. The seeds captured in the openings 324, 326 approach the loading wheel assembly 400, the side brush 1430 maintains resilient contact between the seeds and the seed disk 320'. The side brush 1430 preferably extends between the loading wheels 410, 420.
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    19/24
    Ventilation Embodiments [0058] Referring to FIGs. 12 and 13, the cap 240 preferably includes one or more vents configured to allow debris or liquid to escape from the inside of the cap 240 during operation. Each vent is preferably located on a return side of the cap 240, that is, on one side of the cap 240 adjacent to the portion of the belt 220 which is returning from the lower portion of the conveyor 200 to an upper portion of the conveyor 200 In the illustrated embodiment, the rear side of the lid 240 (i.e., the left side as seen from the perspective of FIG. 12) is the return side of the lid. A first vent 270 preferably comprises an opening in both a rear surface and a side surface of the lid 240. The first vent 270 is preferably located adjacent to the lower sprocket 250. A surface 272 preferably extends from an inner surface of the lid 240 through the vent 270, to allow fragments or liquid to pass from the inside of the lid through the vent 270. A first side vent 295 is preferably formed on a lateral surface of the lid 240, in accordance with preferably, in the lower half of the lid 240. The lid 240 preferably includes a side vent (not shown) on a side surface of the lid 240 that reflects the first side vent 295. A guide 297 (for example, a protrusion shaped of v that forms a rear inner surface of the lid 240) is preferably configured to guide the debris or liquid towards the side vent 295 and its lat vent reflex reflex. A second side vent 290 is preferably formed on a side surface of the lid 240, preferably arranged above the first side vent 295. The cover 240 preferably includes a side vent (not shown) on a side surface of the cover 240 that reflects the second side vent 290. A guide
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    20/24
    292 (for example, a v-shaped protrusion that forms an inner rear surface of the lid 240) is preferably configured to guide debris or liquid towards the side vent 290, and its reflection side vent.
    [0059] To further reduce the production of fragments or liquid inside the conveyor, the inside of the lid 240 preferably has a fine surface finish and, in some embodiments, is coated with a hydrophobic coating (for example, polystyrene oxide manganese or zinc oxide polystyrene nano-compound, precipitated calcium carbonate, or a silica nano-coating).
    Alternative Implementation of the Meter-Carrier Interface [0060] Returning to FIGs. 16-21, a modified embodiment of the row unit 200 is illustrated. Referring first to FIG. 10, meter 300 preferably includes a pivot bar 1610 arranged to be pivotally mounted to the row unit, such that the seed meter is pivotally pivotable over the pivot bar. The conveyor 200 is preferably mounted on the tenon of the row unit, via a spring 1620 that tilts the conveyor upwards. In an installation phase, the operator preferably first assembles the conveyor 200 in the position illustrated in FIGs. 16 and 17 and then pivots the seed meter 300 (clockwise in the view of FIG. 16) in engagement with the conveyor 200.
    [0061] Referring to FIGs. 18-21, the conveyor motor 210 preferably includes a housing 214 having a guide protrusion 1632. The seed meter preferably includes a side seed housing 340 having a guide pocket 1630. As the seed meter is articulated in engagement with the conveyor, the 1632 guide protrusion preferably enters the guide bag
    Petition 870190105568, of 10/18/2019, p. 24/36
    21/24
    1630, and touches an upper inner surface of the guide bag. The side seed housing 340 preferably includes a flange 1634 to guide the guide projection 1632 in the guide pocket 1630. When the guide projection 1632 touches the guide pocket 1630, the spring 1620 preferably tilts the projection guide against the support with the guide bag, restricting the relative vertical position of the guide ledge and guide bag. When the guide protrusion 1632 touches the guide pocket 1630, a left guide clamp 1680a and a right guide clamp 1680b of the seed meter 300, preferably slidably engage a guide flap 280 of the conveyor 200, restricting the lateral position of the conveyor and the seed meter. The side seed housing 340 preferably includes a curved surface 1636, and housing 214 preferably includes a curved surface 1638; surfaces 1636, 1638 preferably have substantially equal radii. The curved surface 1636 preferably defines a central axis D, such that when the meter and the conveyor are engaged, the meter and conveyor slide relative to each other on the axis D. Referring to FIG. 20, the guide projection 1632 preferably defines a central axis C. When the guide projection 1632 touches the guide pocket 1630, the axes C, D are preferably parallel and intersecting, such that the guide projection 1632 and surface 1636, are coaxial. The surface 1638 and the guide projection 1632 are preferably coaxial. Referring to FIG. 21, the D axis is preferably located at or immediately adjacent to the location where the seed meter 300 releases seeds, preferably between the loading wheels. Thus, in the embodiment of FIGs. 16-21, when the seed meter 300 and the conveyor 200 are engaged, the seed meter and conveyor articulate relative to each other at a location at or immediately adjacent to the release point of se
    Petition 870190105568, of 10/18/2019, p. 25/36
    22/24 from the seed meter (for example, the 3 o'clock position of the seed disk) and preferably between the loading wheels.
    [0062] Continuing to refer to the embodiment of FIGs. 16-21, the seed meter 300 preferably includes a housing 375 having a screen vent 375. The screen vent 375 is preferably in fluid communication with an inner volume of the side seed housing 340. Of that In this way, air can be exhausted through screen ventilation 375 in the side seed housing 340 by vacuum imposed in a side vacuum housing 330 of the seed meter, via a vacuum inlet 334. The side seed housing 340, preferably , includes a seed intake 342 in seed communication with a seed hopper 344 mounted to the side seed housing.
    Seed Speed Control [0063] In some embodiments, the conveyor motor can drive the conveyor belt at a constant speed. In other embodiments, the conveyor belt can be driven at a speed directly related to the operational speed of the seed meter; in some such embodiments, the conveyor motor can be started. However, as described in order '327 previously incorporated herein by reference, the conveyor motor 210 is preferably in data communication with a monitor configured to control the operating speed of the conveyor motor and thus the speed of seeds coming out of the seed conveyor in the trench. In such embodiments, described in further detail below, the conveyor belt is preferably driven at an operating speed directly related to the ground speed S of the conveyor. Ground speed S can be estimated based on implement speed, or a specific row speed can be determined as described
    Petition 870190105568, of 10/18/2019, p. 26/36
    23/24 in the ‘327 order. As used herein, the seed release speed V refers to the seed speed after release along the seed displacement direction after release, at an angle θ below the horizontal. The seed release speed V can be determined based on the rotational speed R of the conveyor motor by the ratio V = CR, where C is a constant.
    [0064] In one embodiment, the conveyor belt is driven at a multiple of the ground speed of that of the conveyor, where the multiplier is determined based on the angle of seed release from the conveyor, for example, to match the horizontal speed of the seed at ground speed. As an example, if the seed is released from the conveyor 45 degrees below the horizontal, then rotational speed R is preferably selected by the monitor using the ratio:
    R = [S / CcosQ] [0065] In similar embodiments, a nominal rotational speed R can be determined (for example, as described above), and a modified rotational speed Rm can be commanded to the motor, where the modified rotational speed is modified by a geometric gain A and an arithmetic gain Β, according to the relationship:
    Rm = AR + B [0066] The gain values A and Β can be selected empirically in order to improve spacing in the field. In some embodiments, a seed sensor in the trench, such as that described in United States Patent No. 8,418,636, incorporated herein by reference, can be used to determine a trench spacing value. In some such embodiments, the gain values of A and Β can be iteratively modified in order to improve spacing in the trench. As an example, the value
    Petition 870190105568, of 10/18/2019, p. 27/36
    24/24 Β can be increased by a predetermined increment, and the monitor determines whether the trench spacing value increases; if the trench spacing value increases after the Β value is increased, then the monitor preferably again increases the Β value by the predetermined increment and then again determines whether the trench spacing value has increased. If the spacing value in the trench ceases to increase or decrease with values increased by Β, then the monitor preferably ceases to change the iterative gain. In some embodiments, the spacing value in the trench can be determined using the ratios (for example, the ratios used to calculate the Good Spacing Value) disclosed in United States Patent No. 8,386,137, but preferably using times of the seed sensor pulse in the trench than the seed tube pulse sensor pulse times to determine spacing values.
    [0067] The preceding description is presented to enable a technician in the subject to produce and use the invention, and is provided in the context of a patent application and its requests. Various modifications to the preferred embodiment of the apparatus, and the general principles and characteristics of the system and methods described here, will be readily apparent to those skilled in the art. Accordingly, the present invention is not to be limited to the embodiments of the apparatus, system and methods described above and illustrated in the drawing figures, but is to be in accordance with the broader scope consistent with the spirit and scope of the appended claims.
    权利要求:
    Claims (16)
    [1]
    1. An apparatus (400) for distributing a seed on a plantation surface comprising:
    a seed meter (300) configured to drag and release the seed from a seed disk (320) at a seed release location;
    a seed conveyor (200) arranged to receive the seed after the seed is released from said seed disk (320) at an upper end of said seed conveyor (300), said seed conveyor (300) including a belt ( 220) configured to transport the seed from the upper end to a lower end of said seed carrier (200) and release the seed with a speed towards the rear relative to said seed carrier (200);
    a first loading wheel (420) disposed adjacent to said seed release location, said first loading wheel (420) being driven by rotation, wherein said first loading wheel (420) is configured to compress the seed against an opposite surface, and wherein said first loading wheel (420) is configured to eject the seed towards said seed conveyor (200);
    characterized by the fact that it still comprises:
    a guide (430) selected from a group in which the guide day (430) comprises one of:
    (i) a plurality of laterally spaced fins (432), wherein said first loading wheel (420) comprises a circumferential jaw (422), wherein said circumferential jaw (422) extends between said laterally spaced fins ( 432) during rotation of said first loading wheel (420);
    (ii) a plurality of laterally spaced fins (432),
    Petition 870190105568, of 10/18/2019, p. 29/36
    [2]
    2/4 wherein said first loading wheel (420) comprises a plurality of circumferential jaws (422), wherein said fins (432) extend between said circumferential jaws (422) during rotation of said first loading wheel (420); and (iii) a laterally spaced fin (432), wherein said first loading wheel (420) comprises a plurality of circumferential jaws (422), wherein said fin (432) extends between said circumferential jaws (422 ) during rotation of said first loading wheel (420).
    2. Apparatus (400), according to claim 1, characterized by the fact that said guide (430) includes an arcuate surface (436), said arcuate surface (436) being concave in relation to a path of displacement of the seed as the seed enters the seed carrier (200).
    [3]
    Apparatus (400) according to claim 1, characterized in that said opposite surface (2410) against which the seed is compressed is stationary in relation to said seed meter (300).
    [4]
    Apparatus (400) according to claim 1, characterized in that said opposite surface comprises a portion of a second loading wheel (410).
    [5]
    Apparatus (400) according to claim 4, characterized in that said first loading wheel (420) comprises a plurality of circumferential jaws (422), said circumferential jaws (422) being oriented in an orientation retro-scan relative to the direction of rotation of said first loading wheel (420).
    [6]
    6. Apparatus according to claim 5, characterized in that said second loading wheel (410) comprises a plurality of circumferential claws (412), said clamps
    Petition 870190105568, of 10/18/2019, p. 30/36
    3/4 circumferential rims (412) being oriented in a back-scan orientation relative to the rotation direction of said second loading wheel (410).
    [7]
    Apparatus (400) according to claim 4, characterized in that said first loading wheel (420) comprises a plurality of circumferentially arranged teeth (526, 528).
    [8]
    Apparatus according to claim 1, characterized by the fact that said guide (430) is arranged to guide the seed towards a gap between said first loading wheel (420) and said opposite surface.
    [9]
    Apparatus (400) according to claim 8, characterized in that said guide (430) includes an outer portion, said outer portion guiding the seed radially inward towards a rotational center of said disc of seed (320).
    [10]
    Apparatus (400) according to claim 8 or 9, characterized in that said guide (430) includes an inner portion, said inner portion guiding the seed radially outwardly away from a rotational center of said disk seed (320).
    [11]
    Apparatus (400) according to claim 1, characterized in that said seed conveyor (200) includes a housing (240), said housing (240) having a ventilation (270) formed therein, wherein said housing is configured so that fragments or liquid entering said lower end of said conveyor (200) pass through said ventilation (270) before reaching said upper end of said conveyor (200).
    [12]
    12. Apparatus according to claim 11, characterized by the fact that it also includes a guide surface (297), wherein said guide surface (297) is configured to guide fragments
    Petition 870190105568, of 10/18/2019, p. 31/36
    4/4 or liquid towards said ventilation (270).
    [13]
    Apparatus (400) according to claim 1, characterized in that said seed conveyor (200) includes a housing (240), an upper pulley (260) and a lower pulley (250), wherein said lower pulley (250) is configured to move resiliently with respect to said housing (240).
    [14]
    Apparatus (400) according to claim 13, characterized in that it also includes a spring (284) arranged to resiliently maintain a position of said lower pulley (250), wherein said spring (284) has a adjustable spring tension.
    [15]
    Apparatus (400) according to claim 14, characterized by the fact that it also includes a locking mechanism (289), the locking mechanism (289) selectively locking said lower pulley (250) in a relative relative position said housing (240).
    [16]
    16. Apparatus (400) according to claim 1, 3 or 5, characterized by the fact that it also includes a seed sensor (2200) arranged to detect the passage of seeds in said conveyor (200).
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    同族专利:
    公开号 | 公开日
    CA3109006A1|2015-03-05|
    CA2921666A1|2015-03-05|
    CA3109018A1|2015-03-05|
    CA2921666C|2021-06-01|
    EP3038449A1|2016-07-06|
    LT3384749T|2021-05-25|
    US9769978B2|2017-09-26|
    US20180007824A1|2018-01-11|
    ZA201601136B|2017-05-31|
    AU2018220153A1|2018-09-13|
    AU2018220153B2|2020-07-02|
    AU2020204261A1|2020-07-16|
    US11058048B2|2021-07-13|
    EP3384749B1|2021-05-05|
    US20160212932A1|2016-07-28|
    AU2020204261B2|2021-04-08|
    EP3845051A1|2021-07-07|
    US20210298225A1|2021-09-30|
    US20190320577A1|2019-10-24|
    US10398077B2|2019-09-03|
    EP3384749A1|2018-10-10|
    EP3038449A4|2017-04-26|
    EP3038449B1|2018-05-30|
    LT3038449T|2018-07-10|
    UA121023C2|2020-03-25|
    AU2021204180A1|2021-07-15|
    CA3109010A1|2015-03-05|
    WO2015031840A1|2015-03-05|
    AU2014312034B2|2018-05-24|
    CA3109015A1|2015-03-05|
    AU2014312034A1|2016-03-10|
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    法律状态:
    2019-07-23| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-03-24| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-05-12| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 29/08/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201361872319P| true| 2013-08-30|2013-08-30|
    US61/872,319|2013-08-30|
    US201461923449P| true| 2014-01-03|2014-01-03|
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    PCT/US2014/053554|WO2015031840A1|2013-08-30|2014-08-29|Seed delivery apparatus, systems, and methods|
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