Full-hydraulic high-clearance irrigation device

Abstract

The utility model relates to a full-hydraulic high-clearance irrigation device. The full-hydraulic high-clearance irrigation device comprises a frame, an irrigation device, a hydraulic lifting device, a driving device, a hydraulic steering device, a console and a power device, the frame is formed by hinging a front axle and a rear axle, the irrigation device is mounted on a parallel four-bar mechanism in front of the frame, the hydraulic lifting devices are symmetrically distributed at the left and right ends of the front axle and the rear axle of the frame, the driving devices are mounted at the lower ends of the supporting legs, the hydraulic steering devices are fixed on mounting plates of the front axle and the rear axle, and the power device is mounted at the upper end of the rear axle. The hydraulic drive four-wheel differential steering and the hydraulic oil cylinder steering are adopted, the turning radius can be effectively reduced through simultaneous application of the two steering modes, the flexibility of the machine is greatly improved, the machine can adapt to more complex working environments, the working efficiency is improved, and the working efficiency is improved. Meanwhile, the height of the chassis of the vehicle body can be accurately controlled to meet the irrigation requirements of crops at different growth periods and different heights.

Description

Technical Field

[0001] The utility model relates to the field of agricultural equipment irrigation, in particular to a full hydraulic high ground clearance irrigation device which is height-adjustable, flexible in steering and highly stable. Background Art

[0002] With the development of smart agriculture, productivity will be further liberated and agricultural production efficiency will be improved in the future. High-ground clearance plant protection machinery can adapt to different heights of crops in different growth cycles to ensure the effects of spraying and fertilizing. However, the existing agricultural plant protection machinery is too large and easily crushes crops. In addition, during operation, the center of gravity of the vehicle body will change with different road conditions, which is easy to cause rollover. At the same time, there are problems such as single operation conditions and low work efficiency.

[0003] In addition, the agricultural planting conditions in different regions of my country are different, and the popularity of mechanized pesticide spraying is also different. The existing chassis cannot meet the above requirements, the chassis ground clearance height cannot be adjusted, and there are difficulties in turning. In order to solve the above problems, this article mainly describes the improvements made in irrigation of high-ground clearance plant protection machinery as follows: Utility Model Content

[0004] The utility model aims to provide a full hydraulic high ground clearance irrigation device which has the advantages of adjustable height, flexible steering and high stability.

[0005] The utility model relates to a fully hydraulic high-ground clearance irrigation device, comprising a vehicle frame, an irrigation device, a hydraulic lifting device, a driving device, a hydraulic steering device, a driving platform, a power device, a rear mounting seat, and a machine cover. The vehicle frame is hinged by a front axle and a rear axle, the irrigation device is mounted on a parallel four-bar mechanism in front of the vehicle frame, the hydraulic lifting device is symmetrically distributed at the left and right ends of the front axle and the rear axle of the vehicle frame, the driving device is mounted at the lower end of the outrigger, the hydraulic steering device is fixed on the front axle and the rear axle mounting plates, and the power device is mounted on the upper end of the rear axle.

[0006] The frame includes a front axle, a rear axle, a connector, and a shock-absorbing spring. The end of the front axle is provided with a mounting hole and is hinged to the connector; the front end of the rear axle is provided with a mounting hole and is hinged to the connector; the connector is provided with mounting holes corresponding to the front axle and the rear axle, and also includes left and right wing panels with mounting holes and are hinged to the shock-absorbing spring; there are two shock-absorbing springs symmetrically distributed on both sides of the front axle and the rear axle, and the two ends of the shock-absorbing springs are respectively hinged to the connector and the rear axle.

[0007] The irrigation device is installed at the front end of the frame, and includes a water tank, a parallel four-bar mechanism, an irrigation frame, an irrigation nozzle, and a hydraulic system A. The water tank is installed above the front axle of the frame. The water tank serves as a water supply source during the irrigation process and plays a very important role.

[0008] Furthermore, the parallel four-bar mechanism includes a hydraulic system A, which is used to adjust the height of the irrigation rack to meet the requirements of different plant heights.

[0009] Furthermore, the irrigation rack is mounted on a parallel four-bar mechanism by means of bolts, and the brackets on both sides of the irrigation rack can be folded.

[0010] Furthermore, there are 12 water pipes in total, 6 in a group, and two groups are evenly and symmetrically arranged on the sub-brackets on both sides of the irrigation frame, and are installed at the lower end of the sub-brackets by bolt connection. The irrigation sprinkler is installed under the water pipes by bolt connection.

[0011] Furthermore, the irrigation device can be disassembled from the parallel four-bar mechanism to achieve replacement of other plant protection machines.

[0012] There are four sets of hydraulic lifting devices, which are symmetrically and evenly distributed on the left and right ends of the front and rear axles of the frame, and include outriggers, outrigger telescopic sleeves, lifting cylinders, linear displacement sensors, and hydraulic system B. The outrigger telescopic sleeves are square in structure, and the upper end is connected to the frame through a bearing, and a steering shaft is arranged at the upper end, and a hinge block connected to the steering device is arranged in the middle of the steering shaft, and the lower end is sleeved on the outriggers; the outriggers are square in structure, and the upper end is slidably matched with the outrigger telescopic sleeves, and the lower end is provided with a vertical plate to open a mounting hole; the upper part of the lifting hydraulic cylinder is welded to the mounting plate protruding from the outrigger telescopic sleeves, and the lower end is hinged to the outriggers; the upper part of the sensor is welded to the above-mentioned mounting plate, and the lower end is hinged to the outriggers.

[0013] The driving device includes a wheel, a wheel hub hydraulic motor, and a hydraulic system C. The wheel is installed on the outside of the outrigger. The wheel hub hydraulic motor is fixed to the lower vertical plate of the outrigger by bolts and is coaxially connected to the wheel hub hydraulic motor.

[0014] There are two sets of hydraulic steering devices respectively installed on the front axle and rear axle of the frame, which include a steering cylinder, a connecting rod, and a hydraulic system D. The steering cylinder is welded to the mounting plates of the front axle and rear axle of the frame, and the two sides of the connecting rod are respectively hinged to the steering cylinder and the steering shaft.

[0015] The driving platform includes a driving seat, a sunshade, a steering wheel, and a steering wheel mounting seat. The driving seat is fixed to the front axle of the frame with bolts; the steering wheel is provided with a handle and mounted on the mounting seat; the mounting seat is on the right front side of the driving seat and is welded to the frame; the sunshade is mounted directly above the driving seat through a supporting frame.

[0016] The power device includes an engine, a power hydraulic pump, and a battery. The engine is used to provide a power source for the entire machine; the power hydraulic pump converts the engine's mechanical energy into hydraulic energy and continuously delivers hydraulic oil to the hydraulic system; the battery is used to power the electrical components of the entire machine.

[0017] Furthermore, the two sides of the engine are fixed to the rear mounting seat by four ribs; the power hydraulic pump is fixed to the rear mounting seat by bolts and is coaxially connected to the engine; and the battery is fixed to the left bracket of the rear axle by bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 This is a schematic diagram of the overall structure of the utility model.

[0019] Attached Figure 2 It is a schematic diagram of the frame structure of an embodiment of the utility model.

[0020] Attached Figure 3 This is a front view of the entire structure of an embodiment of the utility model.

[0021] Attached Figure 4 It is a left view of the whole structure of the embodiment of the utility model.

[0022] Attached Figure 5 It is a schematic structural diagram of a hydraulic steering device according to an embodiment of the utility model.

[0023] Attached Figure 6 It is a schematic diagram of the hydraulic system principle of an embodiment of the utility model.

[0024] The numbers in the attached drawings are: 1. frame, 2. irrigation device, 3. hydraulic lifting device, 4. drive device, 5. hydraulic steering device, 6. power unit, 7. driving platform, 8. rear mounting seat, 9. hood, 10 front axle, 11. rear axle, 12. connector, 13. shock-absorbing spring, 14. water tank, 15. parallel four-bar mechanism, 16. irrigation rack, 17. irrigation nozzle, 18. outrigger, 19. outrigger telescopic sleeve, 20. lifting cylinder, 21. linear displacement sensor, 22. wheel, 23. wheel hub hydraulic motor, 24. steering cylinder, 25. connecting rod, 26. driver's seat, 27. sunshade, 28. steering wheel, 29. steering wheel mounting seat, 30. engine, 31. power hydraulic pump, 32. battery. DETAILED DESCRIPTION

[0025] The following is a further description of the drawings of the utility model patent in conjunction with the drawings. Figure 1 , 2 As shown in , 3, 4, 5, 6, the utility model includes a frame 1, an irrigation device 2, a hydraulic lifting device 3, a driving device 4, a hydraulic steering device 5, a driving platform 6, a power device 7, a rear mounting seat 8, and a machine cover 9.

[0026] In this embodiment, in order to achieve that the vehicle body can adapt to a variety of complex terrains, the irrigation frame of the whole machine always maintains a stable state when traveling, and prevents the rigid structure frame from being damaged when impacted, the current frame adopts the form of front and rear axle hinges to solve the above problems. The frame includes a front axle 10, a rear axle 11, a connector 12, and a shock-absorbing spring 13. The end of the front axle 10 is provided with a front mounting hole and is hinged to the connector 12; the front end of the rear axle 11 is provided with a rear mounting hole and is hinged to the connector 12; the connector 12 is also provided with corresponding mounting holes for connecting the front axle 10 and the rear axle 11, and also includes left and right end wing plates with mounting holes and hinged to the shock-absorbing spring 13; the shock-absorbing spring 13 has two symmetrically distributed on both sides of the rear axle 11, and its two ends are respectively hinged to the connector 12 and the rear axle 11.

[0027] Furthermore, the front axle 10 can rotate around the axis of the front mounting hole; the rear axle 11 can rotate around the axis of the rear mounting hole, and the shock-absorbing spring 13 is used to correct the position of the rear axle 11 after it is rotated by force so that it returns to its original balanced state. The frame 1 can realize free rotation in two dimensions and can adapt to a variety of complex terrains.

[0028] In this embodiment, an irrigation device 2 is provided including a parallelogram 15, and the parallelogram 15 can adjust the height of an irrigation frame 16 to solve the problem that the machine has different operating heights in different growth periods of plants. The irrigation device 2 is installed at the front end of a frame 1, and includes a water tank 14, a parallelogram 15, an irrigation frame 16, an irrigation nozzle 17, and a hydraulic system A. The water tank 14 is installed above the frame 1, and the parallelogram 15 includes a hydraulic system A. The irrigation frame 16 is installed on the parallelogram 15 by bolts, and the two side brackets of the irrigation frame 16 can be folded; there are 12 water pipes in total, 6 in a group, and two groups are evenly and symmetrically arranged on the irrigation frame 16 sub-brackets, which are installed at the lower end of the sub-brackets by bolt connection, and the irrigation nozzle 17 is installed below the water pipes by bolt connection.

[0029] Furthermore, when the machine is used for other plant protection operations, the irrigation device 2 can be disassembled from the parallel four-bar mechanism 15 to replace other plant protection machines.

[0030] In this embodiment, in order to allow the irrigation device 2 to affect a larger working area as much as possible when operating, and considering that the plant protection machinery should not occupy too much floor space, the sub-brackets on both sides of the irrigation frame 16 can be folded, and 6 water pipes are connected to the bottom of each sub-bracket by bolts, and an irrigation nozzle 17 is connected to the bottom of each water pipe.

[0031] In this embodiment, in order to adapt to the different plant heights caused by crop types, growth and other reasons, and to achieve the lifting and lowering adjustment of the chassis height, four sets of hydraulic lifting devices 3 are arranged symmetrically and evenly distributed on the left and right ends of the front axle 10 and the rear axle 11 of the frame, and the hydraulic lifting device 3 includes a support leg 18, a support leg telescopic sleeve 19, a lifting cylinder 20, a linear displacement sensor 21, and a hydraulic system B; the support leg telescopic sleeve 19 is a square structure, and the upper end is connected to the frame 1 through a bearing, and a steering shaft is arranged at the upper end, and a hinge block connected to the steering device is arranged in the middle of the steering shaft, and the lower end is sleeved on the support leg 18; the support leg 18 is a square structure, and the upper end is slidably matched with the support leg telescopic sleeve 19, and the lower end is provided with a vertical plate to open a mounting hole for installing the drive device 4; the upper part of the lifting cylinder 20 is welded to the protruding mounting plate of the support leg telescopic sleeve 19, and the lower end is hinged to the support leg 18.

[0032] Furthermore, in order to achieve precise control of the chassis height and ensure the normal operation of the equipment, a linear displacement sensor 21 is arranged between the outrigger 18 and the outrigger telescopic sleeve 19 to monitor the cylinder position and movement in real time. The upper end of the linear displacement sensor 21 is welded to the mounting plate and the lower end is hinged to the outrigger 18.

[0033] In this embodiment, in order to realize hydraulically driven four-wheel differential steering and the whole machine walking on the ground, a driving device 4 is set at the lower end of the leg 18, and the driving device includes a wheel 22, a hub hydraulic motor 23, and a hydraulic system C. The wheel 22 is installed on the outside of the leg 18, and the hub hydraulic motor 23 is fixed to the lower vertical plate of the leg 18 by bolts and is coaxially connected to the hub hydraulic motor 23.

[0034] In this embodiment, in order to reduce the turning radius, increase the flexibility of the whole machine when traveling, and improve the working efficiency, a hydraulic steering device 5 is set on the front axle 10 and the rear axle 11 of the frame. The hydraulic steering device 5 includes a steering cylinder 24, a connecting rod 25, and a hydraulic system D. The steering cylinder 24 is welded on the mounting plates of the front axle 10 and the rear axle 11 of the frame; the two sides of the connecting rod 25 are respectively hinged with the steering cylinder 24 and the steering shaft. When turning, the piston rod of the steering cylinder 24 moves linearly to one side, and the steering shaft is driven to rotate through the connecting rod 25 hinged on both sides, and then the wheels 22 on both sides are driven to rotate simultaneously, thereby realizing steering.

[0035] In this embodiment, the driving platform 7 includes a driving seat 26, a sunshade 27, a steering wheel 28, and a steering wheel mounting seat 29. The driving seat 26 is fixed to the front axle 10 of the frame with bolts; the steering wheel 28 is provided with a handle and is mounted on the steering wheel mounting seat 29; the steering wheel mounting seat 29 is on the right front side of the driving seat 26 and is welded to the frame 1; the sunshade 27 is installed directly above the driving seat 26 through a support frame.

[0036] In this embodiment, the power device 6 includes an engine 30, a power hydraulic pump 31, and a battery 32. The engine 30 is used to provide a power source for the whole machine; the power hydraulic pump 31 converts the mechanical energy of the engine 30 into hydraulic energy, and continuously delivers hydraulic oil to the hydraulic system; the battery 32 is used to supply power to various electrical components of the whole machine.

[0037] Furthermore, the engine 30 is fixed to the rear mounting seat 8 on both sides by four ribs; the power hydraulic pump 31 is fixed to the rear mounting seat 8 by bolts and is coaxially connected to the engine 30; the battery 32 is fixed to the left bracket of the rear axle 11 by bolts.

[0038] Hydraulic system principle:

[0039] Hydraulic system principle:

[0040] The hydraulic system A includes an oil tank A1, a filter A2, a main pump A3, an oil inlet circuit A4, an oil return circuit A5, a first solenoid valve A6, a check throttle valve A7, a synchronous motor A8, a two-way hydraulic lock A9 and a hydraulic telescopic cylinder group A10. The hydraulic telescopic cylinder group A10 includes two hydraulic telescopic cylinders. The first solenoid valve A6 controls the hydraulic telescopic cylinder group A10. The first solenoid valve A6 is provided with an oil inlet P1, an oil return port T1, a first oil port A101 and a second oil port A102. The oil inlet P1 is connected to the inlet The oil return port T1 is connected to the oil return oil circuit A5, the first oil port A101 is connected to the rodless chamber of the hydraulic telescopic oil cylinder group A10 through the first oil circuit A111 and the first sub-circuit (the second sub-circuit), the second oil port A102 is connected to the rod chamber of the hydraulic telescopic oil cylinder group A10 through the second oil circuit A112, the first solenoid valve A6 can control the rise or fall of the hydraulic telescopic oil cylinder group A10, when the first solenoid valve A6 is in the first working state, the oil inlet P1 is connected to the rodless chamber of the hydraulic telescopic oil cylinder group A10, and the rod chamber of the hydraulic telescopic oil cylinder group A10 is connected to the rod chamber of the hydraulic telescopic oil cylinder group A10. The first oil port A101 is connected, the oil outlet T1 is connected with the second oil port A102, when the first solenoid valve A6 is in the second working state, the oil inlet P1 is connected with the second oil port A102, the oil outlet T1 is connected with the first oil port A101; the first solenoid valve A6 includes a first working state, a second working state and a third working state. When the first solenoid valve A6 is placed in the left position, the first solenoid valve A6 is in the first working state, the oil inlet P1 is connected with the first oil port A101, and the oil return port T1 is connected with the second oil port A102. It is connected with the second oil port A102, and the hydraulic telescopic cylinder group A10 extends; when the first solenoid valve A6 is placed in the right position, the first solenoid valve A6 is in the second working state, the oil inlet P1 is connected with the second oil port A102, the oil return port T1 is connected with the first oil port A101, and the hydraulic telescopic cylinder group A10 contracts; when the first solenoid valve A6 is in the third working state, the oil inlet P1, the first oil port A101 and the second oil port A102 are connected with each other; wherein, the first solenoid valve A6 is a three-position four-way reversing solenoid valve.

[0041] The hydraulic system B includes an oil tank A1, a filter A2, a main pump B1, an oil inlet circuit B2, an oil return circuit B3, a second solenoid valve B4, a check throttle valve B5, a synchronous motor B6, a two-way hydraulic lock B7 and a hydraulic lifting cylinder group B8. The hydraulic lifting cylinder group B8 includes four lifting cylinders 20. The second solenoid valve B4 controls the hydraulic lifting cylinder group B8. The second solenoid valve B4 is provided with an oil inlet P2, an oil return port T2, a third oil port B101 and a fourth oil port B102. The oil inlet P2 is connected to the The oil inlet circuit B2 is connected, the oil return port T2 is connected to the oil return circuit B3, the third oil port B101 is connected to the rodless chamber of the hydraulic lifting cylinder group B8 through the third oil circuit B111 and the third sub-circuit (the fourth sub-circuit, the fifth sub-circuit, and the sixth sub-circuit), the fourth oil port B102 is connected to the fourth oil circuit B112, the second solenoid valve B4 can control the rise or fall of the hydraulic lifting cylinder group B8, and when the second solenoid valve B4 is in the first working state, the oil inlet port P2 is connected to the third oil port B101 is connected, the oil outlet T2 is connected with the fourth oil port B102, when the second solenoid valve B4 is in the second working state, the oil inlet P2 is connected with the fourth oil port B102, the oil outlet T2 is connected with the third oil port B101; the second solenoid valve B4 includes a first working state, a second working state and a third working state, when the second solenoid valve B4 is placed in the right position, the second solenoid valve B4 is in the first working state, the oil inlet P2 is connected with the third oil port B101, the oil return port T2 is connected with the third oil port B101 The fourth oil port B102 is connected, and the hydraulic lifting cylinder group B8 extends; when the second solenoid valve B4 is placed in the left position, the second solenoid valve B4 is in the second working state, the oil inlet P2 is connected with the fourth oil port B102, the oil return port T2 is connected with the third oil port B101, and the hydraulic lifting cylinder group B8 contracts; when the second solenoid valve B4 is in the third working state, the oil return port T2, the third oil port B101 and the fourth oil port B102 are connected with each other; wherein, the second solenoid valve B4 is a three-position four-way reversing solenoid valve.

[0042] The hydraulic system C includes an oil tank A1, a filter A2, a main pump C1, an oil inlet circuit C2, an oil return circuit C3, a plurality of proportional servo solenoid valves C4, a plurality of back pressure valves C5 and a plurality of wheel hub hydraulic motors 23. The structures of the proportional servo solenoid valves C4, the back pressure valves C5 and the wheel hub hydraulic motors 23 are the same. The proportional servo solenoid valve C4 is provided with an oil inlet port P3, an oil return port T3, a fifth oil port C101 and a sixth oil port C102. The oil inlet port P3 is connected to the oil inlet circuit C 2, the oil return port T3 is connected to the oil return oil circuit C3, the fifth oil port C101 is connected to the oil inlet of the wheel hub hydraulic motor 23 through the fifth oil circuit C111, the sixth oil port C102 is connected to the sixth oil circuit C112, the proportional servo solenoid valve C4 can control the forward or reverse rotation of the wheel hub hydraulic motor 23, when the proportional servo solenoid valve C4 is in the first working state, the oil inlet P3 is connected to the fifth oil port C101, the oil outlet T3 is connected to the sixth oil port C102. When the proportional servo solenoid valve C4 is in the second working state, the oil inlet P3 is connected to the sixth oil port C102, and the oil outlet T3 is connected to the fifth oil port C101. The proportional servo solenoid valve C4 includes a first working state, a second working state and a third working state. When the proportional servo solenoid valve C4 is placed in the left position, the proportional servo solenoid valve C4 is in the first working state, the oil inlet P3 is connected to the fifth oil port C101, the oil return port T3 is connected to the sixth oil port C102, and the hub hydraulic motor 23 rotates forward; when the proportional servo solenoid valve C4 is placed in the right position, the proportional servo solenoid valve C4 is in the second working state, the oil inlet P3 is connected to the sixth oil port C102, the oil return port T3 is connected to the fifth oil port C101, and the hub hydraulic motor 23 rotates reversely; when the proportional servo solenoid valve C4 is in the third working state, the oil return port T3, the fifth oil port C101 and the sixth oil port C102 are connected to each other.

[0043] The hydraulic system D includes an oil tank A1, a filter A2, a main pump D1, a relief valve D2, an oil inlet circuit D3, an oil return circuit D4, a third solenoid valve D5, a check throttle valve group D6 and a steering cylinder group D7. The check throttle valve group D6 includes a first check throttle valve D601 and a second check throttle valve D602. The steering cylinder group D7 includes a first steering cylinder D701 and a second steering cylinder D702. The third solenoid valve D5 controls the steering cylinder group D7. The third solenoid valve D5 is provided with an oil inlet port P4, an oil return port T4, a seventh oil port D101 and an eighth oil port D102. The oil inlet P4 is connected to the oil inlet circuit D3, the oil return port T4 is connected to the oil return circuit D4, the seventh oil port D101 is connected to the left chamber of the first steering cylinder D701 and the right chamber of the second steering cylinder D702 through the seventh oil circuit D111, the eighth oil port D102 is connected to the eighth oil circuit D112, the third solenoid valve D5 can control the extension or retraction of the steering cylinder group D7, when the third solenoid valve D5 is in the first working state, the oil inlet P4 is connected to the seventh oil port D101, the oil outlet T4 is connected to the eighth oil port D102; when the third solenoid valve D5 is in the first working state, the oil inlet P4 is connected to the seventh oil port D101, the oil outlet T4 is connected to the eighth oil port D102; when the third solenoid valve D5 is in the first working state, the oil inlet P4 is connected to the seventh oil port D101, the oil outlet T4 is connected to the eighth oil port D102; The third solenoid valve D5 is in the second working state, the oil inlet P4 is connected to the eighth oil port D102, the oil outlet T4 is connected to the seventh oil port D101, and the third solenoid valve D5 includes a first working state, a second working state and a third working state. When the third solenoid valve D5 is placed in the left position, the third solenoid valve D5 is in the first working state, the oil inlet P4 is connected to the seventh oil port D101, the oil return port T4 is connected to the eighth oil port D102, the right cavity of the first steering cylinder D701 extends and the left cavity of the second steering cylinder D702 extends; when the third solenoid valve D5 is placed in the right position, the third solenoid valve D5 is in the In the second working state, the oil inlet P4 is connected with the eighth oil port D102, the oil return port T4 is connected with the seventh oil port D101, the left chamber of the first steering cylinder D701 extends and the right chamber of the second steering cylinder D702 extends; when the third solenoid valve D5 is in the third working state, the oil inlet P4 and the oil outlet T4 are connected with each other; wherein, the third solenoid valve D5 is a three-position four-way electro-hydraulic proportional reversing solenoid valve, comprising a pre-stage and an amplifying stage, and by changing the input current of the proportional solenoid, not only the flow direction of the working fluid of the valve can be changed, but also the size of the valve port can be controlled to realize flow regulation, and it has the composite functions of reversing and throttling.

[0044] Furthermore, the hydraulic system A also includes a two-way hydraulic lock A9, which includes a first hydraulically controlled one-way valve A901 and a second hydraulically controlled one-way valve A902. The first hydraulically controlled one-way valve A901 is arranged on the oil circuit between the first oil port A101 and the rodless chamber of the hydraulic telescopic cylinder group A10, and the second hydraulically controlled one-way valve A902 is arranged on the oil circuit between the second oil port A102 and the rod chamber of the hydraulic telescopic cylinder group A10.

[0045] Furthermore, the hydraulic system A also includes a check throttle valve A7, and the check throttle valve A7 is arranged on the oil circuit between the first oil port A101 and the rodless chamber of the hydraulic telescopic cylinder group A10.

[0046] Furthermore, the working characteristics of the hydraulic system B are the same as those of the hydraulic system A, which will not be elaborated here.

[0047] Furthermore, the hydraulic system C also includes a wheel hub hydraulic motor 23 and a proportional servo solenoid valve C4. The proportional servo solenoid valves C4 are respectively arranged corresponding to the wheel hub hydraulic motors 23. The proportional servo solenoid valves C4 are respectively connected to the oil inlet circuit C2 and the oil return circuit C3.

[0048] Furthermore, the hydraulic system C also includes a back pressure valve C5, which is composed of two sets of one-way valves and a relief valve. This valve can realize one-way flow of the oil circuit. At the same time, the back pressure valve C5 can adjust the system back pressure to change the working resistance during driving, and can be used in places with large system pressure difference.

[0049] Furthermore, the hydraulic system D also includes a check throttle valve group D6, the first check throttle valve D601 is arranged on the oil circuit between the seventh oil port D101 and the left chamber of the first steering cylinder D701, and the right chamber of the second hydraulic cylinder D702, and the second check throttle valve D602 is arranged on the oil circuit between the eighth oil port D102 and the right chamber D701 of the first steering cylinder, and the left chamber of the second steering cylinder D702.

[0050] Furthermore, hydraulic system A, hydraulic system B and hydraulic system D all use one solenoid valve to control the movement of the entire system, which reduces the number of solenoid valves compared to the prior art, effectively simplifies control logic, simplifies pipelines and lines, and greatly reduces product failure points and costs.

[0051] like Figure 6 As shown, when the first solenoid valve A6 in the hydraulic system A is energized, the first solenoid valve A6 is placed in the left position, the first solenoid valve A6 is in the first working state, and the hydraulic telescopic cylinder group A10 is working. Therefore, the hydraulic oil enters the rodless chamber of the hydraulic telescopic cylinder group A10 through the oil inlet circuit A4, the oil inlet port P1, the first oil port A101 of the first solenoid valve A6, the check throttle valve A7, the first oil circuit A111, the synchronous motor A8, and the first sub-circuit (the second sub-circuit) to push the piston rod of the hydraulic telescopic cylinder group A10 to extend; the hydraulic oil return oil of the rod chamber of the hydraulic telescopic cylinder group A10 passes through the second oil circuit A112, the second oil port A102 of the first solenoid valve A6, the return oil port T1, and the return oil circuit A5 in sequence and then flows into the oil tank A1.

[0052] like Figure 6As shown, when the first solenoid valve A6 in the hydraulic system A is energized, the first solenoid valve A6 is placed in the right position, the first solenoid valve A6 is in the second working state, and the hydraulic telescopic cylinder group A10 is working, so the hydraulic oil enters the rod chamber of the hydraulic telescopic cylinder group A10 through the oil inlet circuit A4, the oil inlet port P1, the second oil port A102 of the first solenoid valve A6, and the oil return circuit A112 to push the piston rod of the hydraulic telescopic cylinder group A10 to retract; the hydraulic oil return oil of the rodless chamber of the hydraulic telescopic cylinder group A10 passes through the first sub-circuit (second sub-circuit), the synchronous motor A8, the first oil circuit A111, the check throttle valve A7, the first oil port 101 of the first solenoid valve A6, the oil return port T1, and the oil return circuit A5 in sequence and then flows into the oil tank A1.

[0053] like Figure 6 As shown, when the second solenoid valve B4 in the hydraulic system B is energized, the second solenoid valve B4 is placed in the right position, the second solenoid valve B4 is in the first working state, and the hydraulic lifting cylinder group B8 is working. Therefore, the hydraulic oil passes through the oil inlet circuit B2, the oil inlet port P2, the third oil port B101 of the second solenoid valve B4, the check throttle valve B5, the third oil circuit B111, the synchronous motor B6, and the third sub-circuit (the fourth sub-circuit, the fifth sub-circuit, and the sixth sub-circuit) and then enters the rodless chamber of the hydraulic lifting cylinder group B8 to push the piston rod of the hydraulic lifting cylinder group B8 to extend; the hydraulic oil return oil of the rod chamber of the hydraulic lifting cylinder group B8 passes through the fourth oil circuit B112, the fourth oil port B102 of the second solenoid valve B4, the return oil port T2, and the return oil circuit B3 in turn and then flows into the oil tank A1.

[0054] like Figure 6 As shown, when the second solenoid valve B4 in the hydraulic system B is energized, the second solenoid valve B4 is placed in the left position, the second solenoid valve B4 is in the second working state, and the hydraulic lifting cylinder group B8 is working, so the hydraulic oil enters the rod chamber of the hydraulic lifting cylinder group B8 through the oil inlet circuit B2, the oil inlet port P2, the fourth oil port B102 of the second solenoid valve B4, and the return oil circuit B112 to push the piston rod of the lifting cylinder group B8 to contract; the hydraulic oil return oil of the rod chamber of the hydraulic lifting cylinder group B8 passes through the third sub-circuit (the fourth sub-circuit, the fifth sub-circuit, the sixth sub-circuit), the synchronous motor B6, the third oil circuit B111, the check throttle valve B5, the third oil port B101 of the second solenoid valve B4, the return oil port T2, and the return oil circuit B3 and then flows into the oil tank A1.

[0055] like Figure 6As shown, the proportional servo solenoid valve C4 in the hydraulic system C adopts a servo valve body with a feedback loop. This valve body includes a three-position four-way valve, and a Y-shaped function at the power-off point, which is used to ensure that the oil at the valve body oil inlet P3 is completely disconnected. At the same time, the inlet and outlet of the hub hydraulic motor 23 are connected to the oil tank at the same time, which is helpful for traction. The proportional servo solenoid valve C4 changes the input voltage to make the valve body linearly change between the first functional position and the second functional position, and the second functional position and the third functional position, thereby further affecting the changes in the oil volume of the fifth oil port C101 and the sixth oil port C102 and the changes in the inlet and outlet directions of the fifth oil port C101 and the sixth oil port C102, thereby achieving precise control of the hub hydraulic motor 23.

[0056] like Figure 6 As shown, when the proportional servo solenoid valve C4 in the hydraulic system C is energized, the proportional servo solenoid valve C4 is in the left position, the proportional servo solenoid valve C4 is in the first working state, and the hub hydraulic motor 23 is working, so the hydraulic oil passes through the oil inlet circuit C2, the oil inlet port P3, the fifth oil port C101 of the proportional servo solenoid valve C4, the fifth oil circuit C11, the back pressure valve C5, and the oil inlet of the hub hydraulic motor 23, driving the hub hydraulic motor 23 to rotate forward; the hydraulic oil return oil at the oil outlet of the hub hydraulic motor 23 passes through the back pressure valve C5, the eighth oil circuit C112, the sixth oil port C102 of the proportional servo solenoid valve C4, the return oil port T3, and the return oil circuit C3 in turn and then flows into the oil tank A1.

[0057] like Figure 6 As shown, when the proportional servo solenoid valve C4 in the hydraulic system C is energized, the proportional servo solenoid valve C4 is in the right position, the proportional servo solenoid valve C4 is in the second working state, and the hub hydraulic motor 23 is working, so the hydraulic oil passes through the oil inlet circuit C2, the oil inlet port P3, the sixth oil port C102 of the proportional servo valve C4, the eighth oil circuit C112, the back pressure valve C5, and the oil outlet of the hub hydraulic motor 23, driving the hub hydraulic motor 23 to reverse; the hydraulic oil return oil at the oil inlet of the hub hydraulic motor 23 passes through the back pressure valve C5, the seventh oil circuit C111, the fifth oil port C101 of the proportional servo solenoid valve, the return oil port T3, and the return oil circuit C3 in turn and then flows into the oil tank A1.

[0058] like Figure 6As shown, when the third solenoid valve D5 in the hydraulic system D is energized, the third solenoid valve D5 is placed in the left position, the third solenoid valve D5 is in the first working state, and the steering cylinder group D7 is working, so the hydraulic oil passes through the oil inlet circuit D3, the oil inlet port P4, the seventh oil port D101, the first check throttle valve D601, and the seventh sub-circuit (eighth sub-circuit) to push the right chamber of the first steering cylinder D701 and the left chamber piston rod of the second steering cylinder D702 to extend respectively; the hydraulic oil return oil of the left chamber of the first steering cylinder D701 and the right chamber of the second steering cylinder D702 passes through the ninth sub-circuit (tenth sub-circuit), the second check throttle valve D602, the eighth oil port D102 of the third solenoid valve D5, the return oil port T4, and the return oil circuit D4 in turn and then flows into the oil tank A1.

[0059] like Figure 6 As shown, when the third solenoid valve D5 of the hydraulic system D is energized, the third solenoid valve D5 is placed in the right position, the third solenoid valve D5 is in the second working state, and the steering cylinder group D7 is working, so the hydraulic oil passes through the oil inlet circuit D3, the oil inlet port P4, the eighth oil port D102, the second check throttle valve D602, and the ninth sub-circuit (the tenth sub-circuit) to push the left chamber of the first steering cylinder D701 and the right chamber piston rod of the second steering cylinder D702 to extend respectively; the hydraulic oil return oil of the left chamber of the first steering cylinder D701 and the right chamber of the second steering cylinder D702 passes through the seventh sub-circuit (the eighth sub-circuit), the first check throttle valve D601, the seventh oil port D101 of the third solenoid valve D5, the return oil port T4, and the return oil circuit D4 in turn and then flows into the oil tank A1.

[0060] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A fully hydraulic high ground clearance irrigation device, characterized in that: It includes a frame, an irrigation device, a hydraulic lifting device, a driving device, a hydraulic steering device, a driving platform, and a power unit; the frame is hinged by a front axle and a rear axle, the irrigation device is installed on a parallel four-bar mechanism in front of the frame, the hydraulic lifting device is symmetrically distributed on the left and right ends of the front axle and the rear axle of the frame, the driving device is installed at the lower end of the support leg, the hydraulic steering device is fixed on the front axle and the rear axle mounting plates, and the power unit is installed on the upper end of the rear axle.

2. A fully hydraulic high ground clearance irrigation device according to claim 1, characterized in that: The frame includes a front axle, a rear axle, a connector, and a shock-absorbing spring. The end of the front axle is provided with a mounting hole and is hinged to the connector; the front end of the rear axle is provided with a mounting hole and is hinged to the connector; the connector is provided with mounting holes corresponding to the front axle and the rear axle, and also includes left and right wing panels with mounting holes and are hinged to the shock-absorbing spring; the shock-absorbing spring has two sets symmetrically distributed on both sides of the hinge of the front axle and the rear axle, and its two ends are respectively hinged to the connector and the rear axle.

3. A fully hydraulic high ground clearance irrigation device according to claim 1, characterized in that: The irrigation device comprises a water tank, a parallel four-bar mechanism, an irrigation frame, a sub-frame, an irrigation nozzle, and a hydraulic system A.

4. A fully hydraulic high ground clearance irrigation device according to claim 1, characterized in that: There are four sets of hydraulic lifting devices, which are symmetrically and evenly distributed on the left and right ends of the front axle and the rear axle of the frame, and include outriggers, outrigger telescopic sleeves, lifting cylinders, linear displacement sensors, and hydraulic system B; the outrigger telescopic sleeves are square in structure, and the upper end is connected to the frame through a bearing, a steering shaft is arranged at the upper end, a hinge block connected to the hydraulic steering device is arranged in the middle of the steering shaft, and the lower end is sleeved on the outriggers; the outriggers are square in structure, the upper end is slidably matched with the outrigger telescopic sleeves, and a vertical plate is arranged at the lower end to open a mounting hole; the upper part of the lifting cylinder is welded to the protruding mounting plate of the outrigger telescopic sleeve, and the lower end is hinged to the outriggers; the upper part of the linear displacement sensor is welded to the above-mentioned mounting plate, and the lower end is hinged to the outriggers.

5. A fully hydraulic high ground clearance irrigation device according to claim 1, characterized in that: The steering part consists of hydraulically driven four-wheel differential steering and steering cylinder steering. The driving device includes wheels, wheel hub hydraulic motors, and a hydraulic system C. The wheels are mounted on the outside of the outriggers. The wheel hub hydraulic motors are fixed to the lower vertical plates of the outriggers by bolts and are coaxially connected to the wheel hub hydraulic motors. The hydraulic steering device has two sets respectively mounted on the front axle and rear axle of the frame, which include a steering cylinder, a connecting rod, and a hydraulic system D. The steering cylinder is welded to the mounting plates of the front axle and rear axle of the frame, and the two sides of the connecting rod are respectively hinged to the steering cylinder and the steering shaft.

6. A fully hydraulic high ground clearance irrigation device according to claim 1, characterized in that: The hydraulic steering device includes an electro-hydraulic proportional reversing solenoid valve, which controls the flow direction of the working fluid and can control the valve port size by changing the input current of the proportional electromagnet to achieve flow regulation, and has the combined functions of reversing and throttling.

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