Small wheel type multifunctional power chassis suitable for farmland operation

Abstract

The utility model belongs to the technical field of agricultural vehicles, and relates to a small wheel type multifunctional power chassis suitable for farmland operation, which comprises a frame, an axle is arranged on the frame, wheels are connected onto the axle, the axle comprises a front axle and a rear axle which are connected with the frame, and two ends of the front axle and two ends of the rear axle are respectively connected with an adjusting component in a sliding manner. A first fork arm and a second fork arm are hinged to the adjusting assembly, the same connecting rod is hinged to the end of the first fork arm and the end of the second fork arm, a steering assembly is arranged on the connecting rod, a wheel frame is hinged to the steering assembly, the wheels are rotationally connected to the wheel frame, and a driving assembly matched with the wheels is arranged on the wheel frame. According to the utility model, the wheel track can be adjusted, and the height of each wheel can be independently controlled, so that the chassis and the ground are kept in a parallel state, the transplanter is ensured to have better trafficability and planting quality, the four wheels are respectively provided with an independent steering structure, and the transverse running of the transplanter is realized through a control system.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural vehicles and relates to a small wheeled multifunctional power chassis suitable for farmland operations. Background Art

[0002] During the growing season of crops, mechanized field management operations such as weeding, spraying and fertilizing require agricultural transport vehicles to travel along the row spacing of crops. Existing agricultural transport vehicles still have some problems in the process of traveling: due to the large axial force during the steering process of the transport vehicle, the steering resistance torque is large, it is difficult to achieve omnidirectional steering, the flexibility is poor, and it is not suitable for the complex environment of agricultural production; the vehicle height cannot be properly adjusted for crops of different heights, the versatility is poor, and the adaptability to the terrain is not good, especially on hilly slopes, it is easy to roll over; the row spacing of different crops is generally different, and the row spacing of the same crop in different regions or different planting methods is generally different.

[0003] The existing Chinese invention patent application publication number is CN106938677A. A four-wheel steering wheeled agricultural four-wheel drive transport vehicle includes a frame, a hub motor wheel, a wheel spacing adjustment device and a four-wheel steering control device. The frame includes a base plate, a cover plate and a plurality of support columns that support the cover plate directly above the base plate. A battery pack is placed on the base plate, and an industrial computer is placed on the cover plate. The four corners of the frame are respectively provided with a four-wheel steering control device and a wheel spacing adjustment device. The four-wheel steering control device and the wheel spacing adjustment device on the left and right sides of the frame are symmetrically arranged. The four-wheel steering control device includes a first rotating rod, a second rotating rod, a first gear, a second gear and a first stepper motor. The first rotating rod vertically penetrates the base plate and the cover plate.

[0004] The prior art has the following technical defects:

[0005] The above technical solution realizes the individual control of the wheels and the adjustment of the wheelbase, but when planting and transplanting in mountainous terrain, the problem of ground flatness and the gap between the chassis and the ground makes it impossible to adjust the height between the chassis and the ground, and its overall stability cannot be guaranteed when passing through muddy and bumpy roads. The four wheels cannot fully contact the ground, resulting in the inability to transplant the crops carried on the chassis evenly and stably. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a small wheeled multifunctional power chassis suitable for farmland operations.

[0007] The small wheeled multifunctional power chassis suitable for farmland operations described in the utility model comprises a frame, an axle is arranged on the frame, wheels are connected to the axle, the axle comprises a front axle and a rear axle connected to the frame, both ends of the front axle and the rear axle are slidably connected with an adjustment component, a first fork arm and a second fork arm are hinged on the adjustment component, the ends of the first fork arm and the second fork arm are hinged with the same connecting rod, a steering component is arranged on the connecting rod, a wheel frame is hinged on the steering component, the wheel is rotatably connected to the wheel frame, and a driving component matched with the wheel is arranged on the wheel frame.

[0008] The adjustment component includes an adjustment sleeve slidably connected to one end of the axle, a locking and fixing structure is provided on the adjustment sleeve, a fork arm frame is provided at the other end of the adjustment sleeve, the first fork arm and the second fork arm are both hinged to the fork arm frame, a fork arm lifting structure is provided on the fork arm frame, the adjustment sleeve and the axle are plug-in, and the wheelbase is adjusted by setting a number of gears. The locking and fixing structure can be a bolt, a pin, a spring button or a worm gear or other structures.

[0009] The fork arm lifting structure includes an electric push rod hinged on the fork arm frame, and the telescopic end of the electric push rod is hinged to the first fork arm. The first fork arm is driven to swing on the fork arm frame through the telescopic end of the electric push rod, thereby driving the lifting and lowering adjustment of the end of the first fork arm, and then the second fork arm connected to the first fork arm through the connecting rod moves synchronously to achieve the adjustment of the wheel height.

[0010] The steering assembly includes a steering seat fixedly connected to a connecting rod, a steering column rotatably connected to the steering seat, the steering column is fixedly connected to a wheel frame, and a steering motor connected to the steering column is provided on the steering seat. The steering motor drives the steering column to rotate on the steering seat, thereby driving the wheel frame fixedly connected to the steering column to rotate, thereby realizing the steering change of the wheel. When the chassis frame reaches the end of the planting ridge, the tire can be adjusted to rotate 90° to achieve lateral movement to the next planting ridge.

[0011] The front axle is fixedly connected to the frame through a connecting block, and the rear axle is hinged to the frame through a lug plate. At least one set of return springs is provided on the rear axle. When the height difference between the front and rear terrain is large during driving, the frame and the rear axle can be changed within a certain angle through the lug plate, thereby ensuring that the wheels are always in contact with the ground.

[0012] The driving assembly is a wheel hub motor, and the four wheels are independently driven, which ensures that the driving force is reasonably distributed without the wheels spinning, thereby improving the climbing grade and obstacle-crossing capabilities of the chassis.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model can adjust the wheelbase and independently control the height of each wheel, so that the chassis remains parallel to the ground, ensuring that the transplanter has good passability and planting quality. Better passability on muddy and bumpy roads is achieved through independent drive of four-wheel hub motors. Independent steering structures are provided on all four wheels, and lateral travel of the transplanter is achieved through the control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0016] Figure 2 This utility model Figure 1 A in the enlarged view,

[0017] Figure 3 This utility model Figure 2 The enlarged view of point B in the figure,

[0018] Figure 4 This is a top view of an embodiment of the utility model.

[0019] Figure 5 It is a front view of an embodiment of the utility model.

[0020] In the figure: 1. frame; 2. wheel; 3. front axle; 4. rear axle; 5. ear plate; 6. spring; 7. connecting block; 8. adjusting sleeve; 9. fork arm frame; 10. first fork arm; 11. electric push rod; 12. second fork arm; 13. connecting rod; 14. steering seat; 15. steering column; 16. wheel frame; 17. hub motor; 18. steering motor. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figure 1 to Figure 5As shown, the small wheeled multifunctional power chassis suitable for farmland operations described in the utility model comprises a frame 1, on which a vehicle axle is provided, and on which a wheel 2 is connected, the vehicle axle comprises a front axle 3 and a rear axle 4 connected to the frame 1, and both ends of the front axle 3 and the rear axle 4 are slidably connected with an adjustment assembly, on which a first fork arm 10 and a second fork arm 12 are hinged, and at the ends of the first fork arm 10 and the second fork arm 12 are hinged a same connecting rod 13, on which a steering assembly is provided, and on which a wheel frame 16 is hinged, and the wheel 2 is rotatably connected to the wheel frame 16, The wheel frame 16 is provided with a driving assembly adapted to the wheel 2; the adjusting assembly includes an adjusting sleeve 8 slidably connected to one end of the axle, the adjusting sleeve 8 is provided with a locking and fixing structure, the other end of the adjusting sleeve 8 is provided with a fork arm frame 9, the first fork arm 10 and the second fork arm 12 are both hinged to the fork arm frame 9, the fork arm frame 9 is provided with a fork arm lifting structure, the adjusting sleeve 8 and the axle are plug-in, and the wheelbase is adjusted by setting a number of gears, the locking and fixing structure can be a bolt, a pin, a spring button or a worm gear structure; the fork arm lifting structure includes a hinged fork arm frame 9 The electric push rod 11, the telescopic end of the electric push rod 11 is hinged with the first fork arm 10, and the first fork arm 10 is driven to swing on the fork arm frame 9 through the telescopic electric push rod 11, thereby driving the lifting and lowering adjustment of the end of the first fork arm 10, and then the second fork arm 12 connected to the first fork arm 10 through the connecting rod 13 moves synchronously to achieve the height adjustment of the wheel 2; the steering assembly includes a steering seat 14 fixedly connected to the connecting rod 13, a steering column 15 is rotatably connected to the steering seat 14, the steering column 15 is fixedly connected to the wheel frame 16, and a steering electric motor connected to the steering column 15 is provided on the steering seat 14. The steering motor 18 drives the steering column 15 to rotate on the steering seat 14, thereby driving the wheel frame 16 fixedly connected to the steering column 15 to rotate, thereby realizing the steering change of the wheel 2; the front axle 3 is fixedly connected to the frame 1 through the connecting block 7, and the rear axle 4 is hinged to the frame 1 through the ear plate 5. The rear axle 4 is provided with at least one group of return springs 6. When the height difference between the front and rear terrain is large during driving, the ear plate 5 can make the frame 1 and the rear axle 4 change within a certain angle, thereby ensuring that the wheel 2 is always in contact with the ground; the driving component is a hub motor 17.

[0023] Working process or principle:

[0024] During operation, the wheelbase is adjusted by adjusting the gear position of the adjustment sleeve 8 on the axle according to local actual conditions, so as to adapt to various terrains. When passing through bumpy roads, the ear plate 5 and the spring 6 can make the rear axle 4 tilt at a certain angle to ensure contact with the ground and ensure the stability of the frame 1. Due to the uneven terrain of mountain farmland and inconsistent ridge heights, the four wheels 2 are adjusted separately by the electric push rod to keep the frame 1 stable, thereby ensuring that the transplanting depth of the seedlings remains consistent.

[0025] The utility model can adjust the wheelbase and independently control the height of each wheel 2, so that the chassis remains parallel to the ground, ensuring that the transplanter has good passability and planting quality. The four-wheel hub motors 17 are independently driven to achieve good passability on muddy and bumpy roads. All four wheels are provided with independent steering structures, and the lateral travel of the transplanter is achieved through the control system.

[0026] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.

Claims

1. A small wheeled multifunctional power chassis suitable for farmland operations, comprising a frame (1), an axle is provided on the frame (1), and wheels (2) are connected to the axle, characterized in that: The vehicle axle comprises a front axle (3) and a rear axle (4) connected to a vehicle frame (1); both ends of the front axle (3) and the rear axle (4) are slidably connected with an adjustment assembly; a first fork arm (10) and a second fork arm (12) are hingedly connected to the adjustment assembly; ends of the first fork arm (10) and the second fork arm (12) are hingedly connected to a same connecting rod (13); a steering assembly is provided on the connecting rod (13); a wheel frame (16) is hingedly connected to the steering assembly; a wheel (2) is rotatably connected to the wheel frame (16); and a drive assembly matched with the wheel (2) is provided on the wheel frame (16).

2. The small wheeled multifunctional power chassis suitable for farmland operations according to claim 1 is characterized in that: The adjustment assembly comprises an adjustment sleeve (8) slidably connected to one end of the axle, the adjustment sleeve (8) is provided with a locking and fixing structure, the other end of the adjustment sleeve (8) is provided with a fork arm frame (9), the first fork arm (10) and the second fork arm (12) are both hinged to the fork arm frame (9), and the fork arm frame (9) is provided with a fork arm lifting structure.

3. The small wheeled multifunctional power chassis suitable for farmland operations according to claim 2 is characterized in that: The fork arm lifting structure comprises an electric push rod (11) hinged on the fork arm frame (9), and the telescopic end of the electric push rod (11) is hinged to the first fork arm (10).

4. The small wheeled multifunctional power chassis suitable for farmland operations according to claim 1 is characterized in that: The steering assembly comprises a steering seat (14) fixedly connected to a connecting rod (13); a steering column (15) is rotatably connected to the steering seat (14); the steering column (15) is fixedly connected to a wheel frame (16); and a steering motor (18) connected to the steering column (15) is provided on the steering seat (14).

5. The small wheeled multifunctional power chassis suitable for farmland operations according to any one of claims 1 to 4, characterized in that: The front axle (3) is fixedly connected to the vehicle frame (1) via a connecting block (7), the rear axle (4) is hinged to the vehicle frame (1) via a lug plate (5), and the rear axle (4) is provided with at least one group of springs (6).

6. The small wheeled multifunctional power chassis suitable for farmland operations according to claim 5 is characterized in that: The driving assembly is a wheel hub motor (17).

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