• 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:
    IMPLEMENT A folding implement frame is disclosed having seven sections when in a field use position and nine sections when folded. The frame design allows a frame that is more than 27 meters wide to be folded into a transport position that is less than eight meters wide and less than six meters high. The hydraulic system is used to transfer weight to the central or main frame section during folding and unfolding to improve frame stability. The hydraulic system uses one or more accumulators to minimize the amount of oil reduction in the tractor tank that results from the extension of the implement's hydraulic cylinders. Implement lift and shorter cycle times are minimized by providing a second auxiliary cylinder to lift the main frame section when the entire weight of the implement is in the main section and allowing a smaller cylinder to be used to lift the main section of the frame. frame in the field use position for shorter cycle times to raise and lower the implement for field turns.
    公开号:BR102013021770B1
    申请号:R102013021770-0
    申请日:2013-08-26
    公开日:2020-11-10
    发明作者:Randall A. Maro；Aaron L. Barfels
    申请人:Deere & Company；
    IPC主号:
    专利说明:

    Field
    [0001] An implement frame is disclosed and in particular, a frame for an agricultural implement. Brief Description of Drawings
    [0002] Fig. 1 is a top view of an implement frame that illustrates a main section and multiple wings.
    [0003] Fig. 2 is a side view of a locking hinge assembly between two of the wings with the hinge assembly in the locked field use position.
    [0004] Fig. 3 is a perspective view of the locking joint assembly of Fig. 2.
    [0005] Fig. 4 is a side view of the locking joint assembly of Fig. 2 with the joint unlocked and in a folded position.
    [0006] Fig. 5 is a rear view of the frame in Fig. 1 showing the left side in the field use position.
    [0007] Figs. 6 to 8 are rear views of the frame, as in Fig. 5 showing the left side of the frame illustrating the folding sequence.
    [0008] Fig. 9 is a rear view of the frame showing the entire frame in the folded transport position.
    [0009] Fig. 20 is a hydraulic schematic of the weight transfer system for folding the frame.
    [00010] Fig. 10A is an alternative hydraulic schematic for the frame weight transfer system.
    [00011] Fig. 11 is a hydraulic schematic of the oil change reduction system to reduce the amount of oil changed from the tractor when extending the cylinder rods to unfold the frame.
    [00012] Fig-12 is a hydraulic schematic of an alternative modality of the oil change reduction system.
    [00013] Fig-12A is a hydraulic schematic of an additional alternative modality of the oil change reduction system.
    [00014] Fig-13 is a side view of the main frame section illustrating the assembly of the frame lifting wheel in the lowered frame position.
    [00015] Fig-14 is a side view like Fig. 13 with the frame in the raised position.
    [00016] Fig-15 is a perspective view of the main frame section lifting wheel assembly that illustrates the main frame auxiliary lifting cylinder.
    [00017] Fig-16 is a hydraulic schematic showing the main frame auxiliary lifting cylinder circuit.
    [00018] Fig-17 is a hydraulic schematic of an alternative hydraulic circuit for the main frame lifting cylinder. Detailed Description
    [00019] An agricultural implement 10 is shown in Fig. 1. Implement 10 is a pneumatic digger for use with a cart for planting seeds. However, the present invention can apply to any type of implement and is not limited to a pneumatic digger or even an agricultural implement. The implement 10 includes a frame 22 comprising multiple sections as described in greater detail below, a plurality of wheel assemblies and a hitch 24 for connecting the implement to a main motor such as a tractor to move the implement along the ground in one direction of travel shown by arrow 26. Implement 10 can be attached directly to a tractor or connected behind an air cart, which in turn is connected to a tractor.
    [00020] The frame 22 has a main or central section 30 to which the coupling 24 is connected. The main section is supported on the front and rear main wheel mounts 32. The wheel mounts are mounted on pivot arms to allow the frame 22 to be raised and lowered from the ground. The main frame section has left and right sides 34 and 36, respectively, in relation to the direction of travel.
    [00021] A plurality of left and right wings extends from the central section 30. Only the right side wings are shown in Fig. 1 for the sake of clarity. The left side is a mirror image of the right side. The entire frame is shown in Figs. 5 to 9. The inner wings or first left and right wings 40 are pivotally attached to the left and right sides of the main section at the inner ends 44 of the inner wings, respectively. Each inner wing is pivoting around a respective inner wing axis 47 and each inner wing has an outer end 48. The inner wings are supported on wing wheel assemblies 42 adjacent to the outer ends 48 of the inner wings 40. outside the inner wings are second wings or middle left and right wings 50. The middle wings 50 have inner and outer ends 54 and 58, respectively, and are pivotally attached to the inner ends 54 to the outer ends 48 of the inner wings to the rotation around the medium wing axis 56. The medium wings do not have support wheel assemblies.
    [00022] Outside the middle wings are the rigid left and right wings 70. The rigid wings 70 have inner ends 74 and outer ends 78. The rigid wings are pivotally coupled to the outer ends of the middle wings for rotation in around the wing axes 76. The rigid wings are supported at the outer ends by means of wing wheel assemblies 72. The rigid wings are coupled to the middle wings by means of the locking articulation assemblies 100 described in detail below. The locking joint assemblies hold the rigid wings in place to prevent rotation about the rigid wing axis 76 when the implement is in the field use position shown in Figs. 1 and 5. Medium and rigid wings act as a single unit with wing wheel assemblies 72 that support both medium and rigid wings.
    [00023] Outside the rigid wings are the left and right outer wings 80. The outer wings have inner and outer ends 84 and 88, respectively, and are pivotally attached at their inner ends to the outer ends of the rigid wings 70 The outer wings revolve around the outer wing axes 86. The wing wheel assemblies 82 support the outer wings at the outer ends 88 thereof.
    [00024] Locking hinge assemblies 100 are described with reference to Figs. 2 to 4. A pivot joint 102 couples the rigid wing 70 to the middle wing 50 and defines the rigid wing axes 76. One guide arm 104 has an end 106 coupled to the middle wing at pivot joint 108. The other end of the guide 104 is coupled to stem 114 of a hydraulic cylinder 112 by pivot joint 110. The cap end of cylinder 112 is attached to the middle wing at pivot joint 116. A connecting arm 120 is also attached to stem 114 and the guide arm 104 at the pivot joint 110. The opposite end 122 of the connecting arm 120 is coupled to the rigid wing 70 at a pivot joint 124. Since the stem 114 is retracted, the path of the pivot joint 110 is controlled by the guide arm 104. The arm connecting rod moves along with the guide arm 104. This causes the rigid wing to rotate around the rigid wing axes 76, to lift the rigid wing from the field use position shown in Figs. 2 and 3 for the folded transport position in Fig. 4. In the field use position shown in Fig. 2, pressure on cylinder 112 holds the rigid wing in place with the rigid wing surface 126 firmly adjacent to the wing surface 128 average.
    [00025] Implement 10 is shown in Figs. 1 and 5 in a field use position in which the main section of the frame and the wings are generally aligned with each other in a horizontal orientation. While shown to be generally horizontal, this is when positioned at ground level. The inner wings allow a certain amount of rotation around the inner wing axes 46 to allow the inner wings to follow the ground contours. Likewise, the joined medium and rigid wings are allowed to have some rotation around the middle wing axes 56 while the outer wings are allowed to rotate around the outer wing axes 86, all to follow the ground contours.
    [00026] A plurality of hydraulic cylinders are provided to bend the implement 10 from the field use position of Figs. 1 and 5 for a folded transport position shown at 9. The folding sequence is described below. Hydraulic cylinders 140 are connected to the main frame section 30 and the inner wings 40. The cylinder rods of the cylinders 140 are coupled to the brackets 142 on the inner wings in a slot 144. The slotted connection of the rod to the support for limited rotation of the inner wings around the inner wing axes as the implement is moved over the ground to allow the implement to follow the contours of the ground. Similarly, hydraulic cylinders 150 are connected to inner wings 40 and medium wings 50. Hydraulic cylinders 180 are connected to rigid wings and outer wings. The notched connections of the rods of cylinders 150 and 180 allow limited wing movement as described above allowing the wings to follow the ground contours.
    [00027] The folding of the implement 10 from the field use position to the folded transport position is achieved as follows. First, the frame is lowered in relation to the wheel assemblies. The folding sequence is then started and the frame is raised to its highest position. The ground working tools 28 are then retracted if they are of a retractable design. The folding begins with the first actuating cylinders 180 to rotate the outer wings 80 about the outer wing axes 86. The outer wings are rotated approximately 180 degrees to a position in which the outer wings overlap the rigid wing as shown in Figs. 6. The outer wing wheel mounts 82 are then retracted from the frame, that is, the wheel mounts are moved to the position with respect to the frame that they are in when the frame is lowered into the field use position.
    [00028] The medium wings 50 and the rigid wings 70 are raised together as a fixed unit with the hinge assemblies 100 still locked. The medium and rigid wings are raised by the actuation of the cylinders 150 and are raised together until the medium wings 50 are raised to an angle of about twenty degrees. In doing so, the cylinders 140 are retracted to apply a lifting force to the inner wings 40. The lifting force is not sufficient to lift the inner wings, but to transfer weight from the inner wings to the central section 30. This improves the frame stability during folding and also reduces the load on inner wing wheel assemblies 42. Weight transfer is described in more detail below. After the medium wings are elevated by twenty degrees, the locking joints 100 are released by operating the cylinders 112 and the rigid wings are rotated about the axes 76 about 90 degrees to extend approximately at a right angle to the wings averages. The cylinders 150 are additionally actuated to rotate the middle wings 50 by a total of approximately 90 degrees around the middle wing axes 56 to the position shown in Fig. 8. Now the middle wings are extending upward with the rigid wings extending sideways above the inner wings and with the outer wings between the inner wings and the rigid wings. The rigid wing wheel assemblies 72 are then retracted from the frame.
    [00029] The next step in the folding sequence is the actuation of the cylinders 140 to now rotate the inner wings approximately 90 degrees to the folded transport position shown in Fig. 9. The inner wing wheel assemblies 42 are then retracted. The inner wings are now extending upward, the middle wings extend laterally inward, the rigid wings extend downward, and the outer wings extend upward below the middle wings and between the inner wings and the rigid wings. During the folding operation, the outer wings are rotated a total of approximately 450 degrees from the field use position to the folded transport position. The rigid wings rotate 270 degrees from the field use position to the folded transport position. The medium wings rotate 180 degrees from the field use position to the field transport position while the inner wings rotate only 90 degrees from the field use position to the folded transport position.
    [00030] To fold the implement, the locking joint 100 is unlocked allowing the rigid wings to rotate with respect to the medium wings around the rigid wing axes 76. The implement frame 22 operates as a seven-section frame in position field use and as a nine-section frame in the folded transport position. As noted earlier, the medium wings do not have wheel assemblies attached to them. Wing wheel assemblies are not only mounted on wings that are oriented upwards in the folded transport position. This helps to minimize the overall height of the implement in the folded transport position as there are no wheel assemblies extending upward from the middle wings. The wing wheel assemblies 42 on the inner wings extend laterally and depending on the size of the tools and wheel assemblies, the transport width of the implement 30 may decrease, but not the height.
    [00031] The implement frame, having the seven sections in the field use position and nine sections in the folded transport position, allows a frame to be built more than 27 meters wide in the field use position, but it is folded for a transport position that is less than eight meters wide and less than six meters high. The implement shown has a width of 96 feet (29.26 m) in the use position and a transport position width of 23 feet (7.01 m) and height of 18 feet (5.49 m). These are slightly smaller than the transport dimensions of the 75 foot (22.86 m) wide frame disclosed in U.S. Patent no. 7,497,269. This results in a machine with a significantly larger area covered by pass in the field compared to the machine of the '269 patent without any increase in transport dimensions.
    [00032] A portion of the implement 10 hydraulic system is shown in Fig. 10. Due to the number of wings on the implement, rotating the middle wings 50 between the folded transport position and the field use position is beneficial for stability of the implement and to reduce the load on the inner wing wheel assemblies 42, to transfer weight from the inner wings 40 to the main section 30. The weight transfer was mentioned above in conjunction with the folding of the frame. Weight transfer is achieved by the hydraulic circuit shown in Fig. 10. Hydraulic lines 200 and 202 connected to the tractor hydraulic system to distribute oil to the inner wing cylinders 140 and to the medium wing cylinders 150. Valves 204 and 206 controls the flow of oil to and from the internal wing cylinders 140. Valves 214 and 216 control the flow of oil to and from the medium wing cylinders 150. To unfold the frame 22 from the folded transport position for the field use position, the internal wing cylinders are first extended through the opening of valves 204 and 206. Oil is supplied to cylinders 140 via line 200 and returned from the cylinder via line 202. This rotates the wings internal around the inner wing axes 46 from the upright transport position in Fig. 9 to the generally horizontal position of fig. 8. Valves 204 and 206 are then closed. Valves 214 and 216 are then opened to extend the medium wing cylinders 150. In doing so, the oil pressure is distributed through the pressure regulating valve 218 to the stem end of the inner wing cylinders 140 while the check valve pilot operated 220 is opened to allow oil to seep from the cap ends of the inner wing cylinders. This retracts the rods of the inner wing cylinders 140 to the end of the slits 144. The pressure in the cylinders 140 creates a lifting force on the inner wings, but the pressure is regulated by valve 218 to not be sufficient to lift the inner wings. This transfers weight from the inner wings to the main section. The weight added in the main section keeps the implement stable during the unfolding of the medium wings and reduces the load carried by the internal wing wheel assemblies 42.
    [00033] Fig. 10A shows an alternative hydraulic system to achieve weight transfer. Here, the system is electro-hydraulically controlled with the use of solenoid-controlled valves 222 and 224 that control the oil return flow to the inner wing cylinders 140 for weight transfer.
    [00034] Transferring weight to main section 30 is also beneficial during the folding operation. This is achieved by opening all valves 204, 206, 214, 216 and supplying oil through line 202 and returning oil through line 200. The cylinder rods are retracted until they reach the ends of the slits . The pressure in the inner wing cylinders 140 pulls on the inner wings and transfers the weight to the main section. The pressure required to actually lift the inner wings is greater than the pressure needed to lift the middle wings such that the medium wing cylinders 150 will continue to retract as long as the inner wing cylinders are held in place. Once the middle wings are rotated completely, the hydraulic pressure will increase until it is sufficient to retract the rods of the inner wing cylinders 140 and thereby raise the inner wings. While it is preferred to apply a lifting force to the inner wings for weight transfer without actually lifting the inner wings, it is possible to slightly lift the inner wings before folding the middle wings.
    [00035] The need to transfer weight to the main section during folding is due to the large weight being moved when the medium wings are being folded. Weight transfer is not limited to a nine-section frame, but can also be used with other frame configurations. The nine-section frame, due to its size, has a great weight to be lifted when folding the medium wings. Weight transfer is beneficial. However, weight transfer can still be used with a frame that has less than nine sections if the frame is heavy enough.
    [00036] When extending the hydraulic cylinder rods, more oil is introduced into the cap end of the cylinder than is given from the rod end of the cylinder. The difference in oil volume is the physical volume of the stem itself. With the implement 10 having many large cylinders to bend the frame, the additional volume of oil going to the cylinder cap from the rod end extending to all cylinders to deploy the implement can exceed the amount of oil available from the tractor hydraulic tank.
    [00037] To avoid taking too much oil from the tractor tank, the implement's hydraulic system includes one or more accumulators 250 (Fig. 11). When the rods are retracted, the accumulators store a portion of the oil that comes from the tractor. This results in the amount of oil coming from the tractor being more similar to the amount of oil being returned to the tractor from the end cap of the cylinders, thereby reducing the change in the oil level in the tractor reservoir. Thereafter, when the rods are extended and more oil seeps into the cap end of the cylinders than it seeps from the rod end, the accumulators return oil to the tractor. The flow of oil from the rod ends of the cylinders combined with the oil from the accumulators corresponding more closely to the oil flow to the cap end of the cylinders. This again reduces the magnitude of change in the reservoir oil level. The result is that changes in the oil level in the tractor tank are within acceptable limits.
    [00038] The attached diagram shows the hydraulic implement system. The selective tractor control valves (SCV) 252 and 254 control the flow of oil in and out of the implement. To retract the cylinder rods, shown here as a 256 cylinder, oil drains from the SCV 252 tractor. The oil flow is divided by a mechanical flow divider 258. In this embodiment, divider 258 is comprised of two gear motors 260, 262 joined by a shaft 264. The displacements of the two engines are fixed and in this way determine the ratio of the oil flow division. For example, engines can be sized to split the oil flow 85/15. Any desired reasons can be used. In this example, fifteen percent of the oil flows to accumulator 250 while eighty-five percent flows to the rod end of cylinder 256 through check valve 266. Pressure on line 268 opens pilot operated valve 270 on line 272 connected to the cylinder cap end 256. This allows oil to flow from the tractor through the SCV 254 to the tractor reservoir. As a portion of the oil from the tractor is diverted to the accumulator, more oil is needed to retract the cylinders such that the oil from the tractor is more similar to the oil returned to the tractor so if there was no accumulator.
    [00039] To extend the stem, oil seeps through SCV 254. Pressure on line 272 opens the pilot operated valve 274 allowing oil on the stem side of the cylinder to flow back through the flow divider to the tractor. The pilot pressure on line 272 opens the check valve 276 in this way allowing oil in the accumulator to also flow back through the divider to the tractor. This produces a more similar flow of oil to and from the tractor so that the overall change in the reservoir oil level is within acceptable limits. Other arrangements of hydraulic system components can be used to achieve the same function.
    [00040] An alternative hydraulic system arrangement is the addition of dummy cylinders to the implement that operate in the opposite direction so that while the rod of the active cylinder 256 is retracted, the rod in the dummy cylinder is extended. See Fig. 12. In this location, while the active cylinder rod 256 is retracted, the dummy cylinder rod 257 is extended. In this way, the dummy cylinder acts as the accumulator without the need for a flow divider. As one cylinder delivers more oil than it discharges, the other cylinder discharges more oil than it delivers. In such a system there may be no change in the oil level of the tractor reservoir if there is a fictitious cylinder for each active cylinder. The dummy cylinders must be anchored at each end of the frame to ensure that they move with the active cylinders and do not extend or retract without the proper oil pressure. Fig. 12A shows an alternative schematic for using dummy cylinders as the reservoir. Here, the dummy cylinder 278 is vented to the atmosphere with pressure controlled through the pressure regulating valve 280. Other types of flow dividers can be used other than the twin motors shown. The above system to reduce the amount of oil exchanged with the tractor is necessary as implement 10 is intended to be attached to a separate main engine such as a tractor. This guarantees maximum compatibility of the implement with a wide range of tractors. If the frame is part of a self-propelled vehicle, the vehicle hydraulic system may have a reservoir sized to have sufficient capacity to extend all hydraulic cylinders.
    [00041] The wheel assemblies are coupled to their respective frame sections by the pivot arms rotatably mounted to the main section or the wings to allow the frame to be raised and lowered in relation to the ground. The pivot arm 300 is mounted to the main section by a pivot joint 302 which defines an axis 304. The main wheel assembly 32 is attached to the pivot arm. If the pivot arm 300 is rotated clockwise as seen in Fig. 13, the main section 30 of the frame is raised upwards. A connection, not shown, connects the pivot arm 300 on the front wheel assembly 32 to the pivot arm 303 on the rear wheel assembly so that the front and rear of the frame are raised and lowered together. Such links are generally known.
    [00042] The frame is raised at the end of each pass in a field to turn the implement. Once turned, the frame is lowered to re-engage tools on the ground. The frame is also raised to support the soil implement when transported to and from the field. When lifted in the folded transport position, the entire weight of the implement is carried by the main wheel mounts 32 in the main frame section 30. To carry the largest load, the main wheel mounts 32 are larger than the wing wheel mounts . Likewise, the hydraulic cylinders required to move the pivot arms 300 will be larger than the cylinders to pivot the arms that carry the wing wheel assemblies. However, with the largest cylinder, more oil needs to flow in and out of the cylinder to extend and retract the cylinder rod. Using a large cylinder in the main wheel assemblies by necessity will require more elevation and shorter times when making curves at the end of each pass even though in the field use position the weight of the main frame section wheel assemblies is less. The higher the lift and the shorter the cycle time, the machine productivity decreases. To avoid increased cycle time, main wheel assemblies 32 are provided with two hydraulic cylinders for lifting. A cylinder 306 is dimensioned to lift the main section when in the field use position and only the weight of the main section needs to be supported by the cylinder 306. A second auxiliary cylinder 308 is provided to increase the load carrying capacity to support the load in the main wheel mounts when the frame is in the folded transport position.
    [00043] The cylinder 308 is connected to the pivot arm 300 via a swing arm 310, pivotally mounted to the pivot arm by a 312 joint. The swing arm 310 allows the pivot arm 300 to move only through the operation of the cylinder 306 when desired. However, when it is desired to use both cylinders 306 and 308 to lift the frame, the swing arm 310 rests against the tube 314 attached to the pivot arm 300 to rotate the pivot arm and lift the frame.
    [00044] A hydraulic schematic for operating cylinders 306 and 308 is shown in Fig. 16. The main valve 320 opens to extend the stem of the main frame cylinder 306 and the wing cylinders to lift the frame. A second valve 322 controls the operation of the auxiliary cylinder 308. With both ends open, both cylinders are actuated. With only valve 320 open, only valve 306 is actuated. The valve 322 is opened when the bending sequence is started with the frame in the lowered position. The start of frame folding is mentioned above in the sequence description. Then, when the frame is lifted, both cylinders 306 and 308 are actuated to lift the frame. This positions the swing arm 310 in contact with the tube 314 when lifting the frame.
    [00045] An alternative “auxiliary lifting cylinder” arrangement is shown in Fig. 17. This arrangement requires only a single 354 hydraulic cylinder in each of the two front wheel assemblies to raise the main frame section 30. Oil is provided and returned via lines 350, 352 connected to a selective control valve (SCV) on the tractor. To extend the lift cylinder rod 354, valve 356 is opened, allowing oil to flow from the rod end of the cylinder and oil to drain from the cap end to extend the rod. This is used when lifting the frame for folding. In the field, however, when the frame is raised or lowered, the recirculation valve 358 is opened and valve 356 is closed. This allows oil to flow from the rod end of cylinder 354 to the cap end when lifting. The only need for oil from the tractor via line 350 is oil for the stem volume. Thus, the time required to lift the frame is reduced as only a small amount of oil is required. When the frame is lowered, valve 356 remains closed and valve 358 is opened. Oil flows from the cap end through valve 358 to the stem end. The extra oil (the stem volume) is returned to the tractor via line 350.
    [00046] While this alternate circuit for reduced lift and lower cycle time is shown with only one 354 lift cylinder, two smaller cylinders can be arranged in the circuit in parallel in place of a large cylinder. Depending on the particular cylinder sizes, two smaller cylinders may be cheaper than a large cylinder. The cylinders 306, 308 of Fig. 16 and the associated mounting structure constitute a hydraulic actuator assembly. Likewise, cylinder 354 in Fig. 17 constitutes a hydraulic actuator assembly.
    [00047] Hydraulic systems, as described above, operate the hydraulic actuator assemblies in first and second modes. In the first mode, the hydraulic actuator assemblies move the pivot arms at a first speed. In the second mode, the hydraulic actuator assemblies move the pivot arms at a second speed. With the hydraulic system mode as shown in Fig. 16, the first mode is with only valve 320 open and cylinder 306 operating at a faster speed. In the second mode, both valves 320 and 322 are opened and both cylinders 306 and 308 are operated at a second, slower speed. With the hydraulic system mode shown in Fig. 17, the first mode with the fastest speed is with valve 358 open and valve 356 closed. The second slower speed mode is with valve 358 closed and valve 356 open.
    [00048] Having described the implement, it will be apparent that various modifications can be made without departing from the scope as defined in the attached claims.
    权利要求:
    Claims (6)
    [0001]
    1. Agricultural implement with auxiliary lifting cylinders of main section, comprising: a frame (22) that has a main section (30) with left and right sides (34, 36) in relation to a travel direction (26), the frame (22) that has first left and right wings (40) that have internal ends (44) pivotally attached to the main section (30) on the left and right sides (34, 36) of the same; each wing of the first left and right wings (40) being pivoted around a first wing axis (46) to pivot between a field use position in which the first left and right wings (40) generally extend laterally in line with the main section (30) for a folded transport position in which the first left and right wings (40) are raised from the ground; and, main wheel mounts (32) coupled to the main section (30) of the frame (22) and wing wheel mounts (42) coupled to the first left and right wings (40), both main wheel mounts (32) and wing (42) supporting the frame (22) for movement along the ground in the direction of travel (26) when in the field use position, each of the main wheel assemblies (32) and the wheel assemblies of wing (42) being attached to the frame (22) by pivot arms (300) to allow the frame (22) to be raised and lowered in relation to the wheel assemblies (32, 42), characterized by the fact that it further comprises: a hydraulic implement system that has hydraulic actuator assemblies to move the pivot arms (300) to raise and lower the main section (30) of the frame (22), the hydraulic system operable in first and second modes, in the first mode, the system hydraulic operating hydraulic actuator assemblies to provide sufficient strength for the pivot arms (300) in the main section (30) of the frame (22) to lift the weight of the main section (30) of the frame (22), and in the second mode, the hydraulic system operating the hydraulic actuator assemblies to provide sufficient force for the pivot arms ( 300) in the main section (30) of the frame (22) to lift the weight of the entire frame (22).
    [0002]
    2. Agricultural implement, according to claim 1, characterized by the fact that the hydraulic actuator assemblies comprise a hydraulic cylinder (112, 140, 150, 180, 256, 306, 308, 354) and the hydraulic system is configured to move a hydraulic cylinder rod (112, 140, 150, 180, 256, 306, 308, 354) in a first speed in the first mode and a second speed in the second mode.
    [0003]
    3. Agricultural implement, according to claim 1, characterized by the fact that the hydraulic actuator assemblies comprise a hydraulic cylinder (112, 140, 150, 180, 256, 306, 308, 354) and in which the hydraulic system includes a recirculation valve that connects the cap and stem ends of the hydraulic cylinder (112, 140, 150, 180, 256, 306, 308, 354) together in which in the first mode, the recirculation valve is opened allowing the recirculation of oil from one end of the hydraulic cylinder (112, 140, 150, 180, 256, 306, 308, 354) to the other end of the hydraulic cylinder (112, 140, 150, 180, 256, 306, 308, 354) .
    [0004]
    4. Agricultural implement, according to claim 1, characterized by the fact that the hydraulic actuator assemblies comprise first and second hydraulic cylinders (112, 140, 150, 180, 256, 306, 308, 354) and the hydraulic system is configured to operate only the first hydraulic cylinder (112, 140, 150, 180, 256, 306, 308, 354) in the first mode and to operate both the first and second hydraulic cylinders (112, 140, 150, 180, 256, 306 , 308, 354) in the second mode, thereby providing more strength to the pivot arms (300) in the second mode than in the first mode.
    [0005]
    5. Agricultural implement, according to claim 4, characterized by the fact that the first hydraulic cylinder (112, 140, 150, 180, 256, 306, 308, 354) is dimensioned to support the main section (30) of the frame (22) when the implement is in the field use position and the second hydraulic cylinder (112, 140, 150, 180, 256, 306, 308, 354) is dimensioned to support the main section (30) of the frame (22) together with the first hydraulic cylinder (112, 140, 150, 180, 256, 306, 308, 354) when the frame (22) is in the folded transport position.
    [0006]
    6. Agricultural implement, according to claim 4, characterized by the fact that it additionally comprises a first hydraulic control valve (252, 254) that controls the oil flow to the first hydraulic cylinder (112, 140, 150, 180, 256, 306, 308, 354) and for a second hydraulic control valve (252, 254) operable to receive oil from the first hydraulic control valve (252, 254) and to control the oil flow to the second hydraulic cylinder (112, 140, 150, 180, 256, 306,308, 354).
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    同族专利:
    公开号 | 公开日
    AR092250A1|2015-04-08|
    RU2632964C2|2017-10-11|
    AU2013219209A1|2014-03-20|
    US8893816B2|2014-11-25|
    AU2013219209B2|2017-06-01|
    RU2013138109A|2015-02-20|
    CA2823641A1|2014-02-28|
    UA117090C2|2018-06-25|
    US20140060865A1|2014-03-06|
    BR102013021770A2|2016-02-23|
    CA2823641C|2018-10-16|
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    法律状态:
    2016-02-23| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-03-06| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2018-03-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2018-03-20| B06I| Publication of requirement cancelled [chapter 6.9 patent gazette]|Free format text: ANULADA A PUBLICACAO CODIGO 6.6.1 NA RPI NO 2462 DE 13/03/2018 POR TER SIDO INDEVIDA. |
    2019-06-11| B07A| Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]|
    2020-02-11| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2020-06-23| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-11-10| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/08/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/596,182|US8893816B2|2012-08-28|2012-08-28|Implement frame with main section helper lift cylinders|
    US13/596182|2012-08-28|
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