Four-wheel four-drive agricultural power chassis capable of turning in situ

Abstract

The application discloses a four-wheel four-drive agricultural power chassis capable of steering in situ, which comprises a frame system, a running system and a steering system. The frame system is rectangular and is formed by four groups of connecting seats arranged at corners and mutually connected by telescopic mechanisms. The telescopic mechanisms are arranged between adjacent connecting seats and used for changing the length and width of the frame system. The running system comprises wheel frames, hub motors, storage batteries and tires arranged on the hub motors. The wheel frames are respectively assembled below the connecting seats, the hub motors are installed on the wheel frames, and the storage batteries are arranged on the frame system. The steering system comprises four steering drive motors, which are respectively installed on the connecting seats and electrically connected with the storage batteries. The application can greatly reduce the turning time and space, avoid repeated turning damage and compacted soil, and thus improve the operation efficiency of agricultural machines and the land utilization rate.

Description

Technical Field

[0001] This invention relates to a four-wheel drive agricultural power chassis that can turn on the spot, belonging to the field of agricultural power equipment. Background Technology

[0002] In hilly and mountainous areas, farmland is fragmented and irregularly shaped. Conventional wheeled and tracked tractors and mini-tillers generally employ large-radius steering, articulated steering, and reversing / turning mechanisms. When operating in confined spaces, the implements require ample turning space to turn around; many small terraced fields and slopes lack sufficient turning areas, forcing agricultural machinery to repeatedly move forward, backward, and reverse to adjust direction, resulting in prolonged auxiliary work time. Some extremely small fields are even impossible to turn around normally. Large agricultural machinery has poor maneuverability, relying heavily on manual labor and small, simple implements. Insufficient steering maneuverability has become a key technology restricting the promotion and development of agricultural machinery in hilly and mountainous areas.

[0003] Therefore, there is a need for a four-wheel drive agricultural power chassis that can turn on the spot, which can significantly reduce turning time and space, avoid repeated turning that damages and compacts the soil, thereby improving the efficiency of agricultural machinery operations and land utilization. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a four-wheel drive agricultural power chassis that can turn on the spot, which can significantly reduce turning time and space, avoid repeated turning and damage and compaction of soil, thereby improving the operating efficiency of agricultural machinery and land utilization; and can overcome the shortcomings of the prior art.

[0005] The objective of this invention is achieved through the following technical solution: This invention discloses a four-wheel drive agricultural power chassis capable of on-the-spot steering, comprising a frame system, a driving system, and a steering system. The frame system is rectangular, consisting of four sets of corner connecting seats and telescopic mechanisms interconnected. The telescopic mechanisms are located between adjacent connecting seats to change the length and width dimensions of the frame system. The driving system includes wheel frames, hub motors, a battery, and tires located on the hub motors. The wheel frames are respectively mounted below the connecting seats, the hub motors are mounted on the wheel frames, and the battery is arranged on the frame system. The steering system includes four steering drive motors, each mounted on a connecting seat. The steering drive motors are electrically connected to the battery, and their outputs are drively connected to the wheel frames to drive the wheel frames to rotate 360° axially.

[0006] The aforementioned structure for connecting the output end of the steering drive motor to the wheel frame includes: a gear bracket connected to the lower end of the connecting seat, a rotating platform connected to the lower end of the gear bracket, the rotating platform being connected to the wheel frame, a bearing bracket and a driven gear installed inside the gear bracket, a thrust ball bearing provided inside the bearing bracket, and a fixed shaft keyed to the driven gear and the thrust ball bearing provided on the rotating platform; the steering drive motor is provided with a drive gear that meshes with the driven gear.

[0007] As mentioned above, the shaft of the drive gear is connected to the shaft of the steering drive motor via a coupling.

[0008] As described above, thrust ball bearings are provided on both the upper and lower sides of the bearing bracket, and a limiting ring is provided between the thrust ball bearings.

[0009] The aforementioned retractable mechanism between adjacent connecting seats comprises multiple retractable mechanisms, each including a sleeve rod with internal threads. Screws are installed at the left and right ends of the sleeve rod, and the other end of the screws is connected to the connecting seat. The sleeve rod rotates in both directions to control the screws to extend and retract synchronously, thereby adjusting the spacing between the connecting seats by extending and retracting the screws.

[0010] The aforementioned two of the retractable mechanisms are equipped with storage boxes, and the battery is placed inside the storage boxes.

[0011] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention can control the wheel frame and tires to complete 360° rotation through the steering system. Combined with the driving system, it can realize various steering and driving modes such as turning on the spot, crab turning, and diagonal turning. The distance between the tires can be adjusted through the telescopic mechanism, and the chassis size can be adjusted according to different working scenarios to adapt to different row spacing planting requirements. Power can be provided by the battery.

[0012] 2. The steering drive motor and drive gear can drive the driven gear to rotate, and the driven gear drives the rotating platform to rotate, thereby enabling the wheel frame to rotate in place. Combined with the driving system, it can realize various steering modes such as in-place steering, crab steering, and diagonal steering.

[0013] 3. The distance between the connecting seat and the sleeve rod can be adjusted by rotating them, so that the size can be adjusted according to different working scenarios.

[0014] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will now be described in further detail with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the three-dimensional connection structure of the present invention.

[0016] Figure 2 for Figure 1 A magnified view of part A in the diagram.

[0017] Figure 3 This is a schematic diagram of the three-dimensional connection structure from another angle of the present invention.

[0018] Figure 4 for Figure 2 A magnified view of part B in the diagram.

[0019] Figure 5 This is a top view of the present invention.

[0020] Figure 6 for Figure 5 A partial structural schematic diagram of the AA section line.

[0021] The components include: 1. Connecting seat; 2. Telescopic mechanism; 2-1. Sleeve rod; 2-2. Wheel frame; 3. Wheel hub motor; 4. Battery; 5. Tire; 6. Steering drive motor; 7. Gear bracket; 8. Rotating frustum; 9. Bearing bracket; 10. Driven gear; 11. Thrust ball bearing; 12. Drive gear; 13. Coupling; 14. Limiting ring; 15. Storage box; 16. Detailed Implementation

[0022] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0023] like Figures 1-6As shown, this invention discloses a four-wheel drive agricultural power chassis capable of turning in place, comprising a frame system, a driving system, and a steering system. The frame system is rectangular, consisting of four sets of corner connecting seats 1 and telescopic mechanisms 2 interconnected. The telescopic mechanisms 2 are located between adjacent connecting seats 1 to change the length and width dimensions of the frame system. The driving system includes wheel frames 3, hub motors 4, a battery 5, and tires 6 located on the hub motors 4. The wheel frames 3 are respectively mounted below the connecting seats 1, the hub motors 4 are mounted on the wheel frames 3, and the battery 5 is arranged on the frame system. The steering system includes four steering drive motors 7, which are respectively mounted on the connecting seats 1. The steering drive motors 7 are electrically connected to the battery 5, and the output end of the steering drive motors 7 is connected to the wheel frames 3 for driving the wheel frames 3 to rotate 360° axially. This structure allows the wheel frame 3 and tires 6 to rotate 360° via the steering system. Combined with the driving system, it enables various steering and driving modes such as stationary turning, crab turning, and diagonal turning. The retractable mechanism 2 can adjust the distance between the tires 6, allowing for size adjustments based on different work scenarios. Power is provided by the battery.

[0024] Furthermore, the structure for achieving the transmission connection between the output end of the steering drive motor 7 and the wheel frame 3 includes: a gear bracket 8 connected to the lower end of the connecting seat 1, a rotating platform 9 connected to the lower end of the gear bracket 8, the rotating platform 9 connected to the wheel frame 3, a bearing bracket 10 and a driven gear 11 installed inside the gear bracket 8, and a thrust ball bearing 12 provided inside the bearing bracket 10. Specifically, thrust ball bearings 12 are provided on both the upper and lower sides of the bearing bracket 10, and a limiting ring 15 is provided between the thrust ball bearings 12; a connection is provided on the rotating platform 9 to the driven gear. The fixed shaft is keyed to the thrust ball bearing 12; the steering drive motor 7 is equipped with a drive gear 13 that meshes with the driven gear 11, and the shaft of the drive gear 13 is connected to the shaft of the steering drive motor 7 through a coupling 14; with this structure, the steering drive motor 7 and the drive gear 13 can drive the rotation of the driven gear 11, and the driven gear 11 drives the rotation of the rotating platform 9, thereby realizing the wheel frame 3 to complete the rotation in place. Combined with the driving system, it can realize various steering and driving modes such as in-place steering, crab steering, and diagonal steering.

[0025] Furthermore, there are multiple telescopic mechanisms 2 between adjacent connecting seats 1. Each telescopic mechanism 2 includes a threaded sleeve 2-1, with screws 2-2 installed at both ends of the sleeve 2-1. The other end of each screw 2-2 is connected to the connecting seat 1. The sleeve 2-1 rotates in both directions to control the synchronous extension and retraction of the screws 2-2. The spacing between the connecting seats 1 is adjusted by the extension and retraction of the screws 2-2. In this way, the spacing between the connecting seats 1 can be adjusted by rotating the sleeve 2-1 and the screws 2-2, thereby allowing the size to be adjusted according to different operating scenarios.

[0026] Two of the retractable mechanisms 2 are equipped with storage boxes 16, and the batteries 5 are placed inside the storage boxes 16; this facilitates the storage of some battery components.

[0027] Working principle: Rotating the telescopic mechanism 2's sleeve 2-1 controls the extension and retraction of the screw 2-2, thereby adjusting the wheel spacing. The battery provides electrical energy to the steering drive motor 7 and the hub motor 4. The steering drive motor 7 converts electrical energy into mechanical energy output, which is transmitted to the coupling 14 via the shaft. The coupling 14 then transmits the motion to the drive gear 13. After the drive gear 13 and the driven gear 11 reduce speed and increase torque, the power is transmitted to the rotating platform 9, which in turn drives the part below the rotating platform 9 to complete a 360-degree rotation, completing the turn on the spot. Combined with the driving system, it can achieve crab-like and diagonal movements.

[0028] Furthermore, the device may also include a control system, which includes a human-machine interface component and a controller. The controller is electrically connected to the human-machine interface component, the hub motor 4, and the steering drive motor 7. The controller is powered by a battery and controls the vehicle through the vehicle's control system. However, this solution focuses on protecting the frame system, the running system, and the steering system. Therefore, the control system will not be described in detail.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments without departing from the technical solution of the present invention and based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A four-wheel drive agricultural power chassis capable of turning in place, characterized in that, This includes the chassis system, the running system, and the steering system; The frame system is rectangular and consists of four sets of corner connecting seats (1) and telescopic mechanisms (2) connected to each other. The telescopic mechanisms (2) are located between adjacent connecting seats (1) and are used to change the length and width of the frame system. The driving system includes a wheel frame (3), a hub motor (4), a battery (5), and a tire (6) located on the hub motor (4); the wheel frame (3) is respectively mounted below the connecting seat (1), the hub motor (4) is mounted on the wheel frame (3), and the battery (5) is arranged on the frame system; The steering system includes four steering drive motors (7), which are respectively mounted on the connecting seat (1). The steering drive motors (7) are electrically connected to the battery (5), and the output end of the steering drive motors (7) is connected to the wheel frame (3) for driving the wheel frame (3) to rotate 360° axially.

2. The four-wheel drive agricultural power chassis capable of turning in place according to claim 1, characterized in that, The structure for achieving the transmission connection between the output end of the steering drive motor (7) and the wheel frame (3) includes: a gear bracket (8) connected to the lower end of the connecting seat (1), a rotating platform (9) connected to the lower end of the gear bracket (8), the rotating platform (9) being connected to the wheel frame (3), a bearing bracket (10) and a driven gear (11) installed in the gear bracket (8), a thrust ball bearing (12) provided in the bearing bracket (10), and a fixed shaft keyed to the driven gear (11) and the thrust ball bearing (12) provided on the rotating platform (9); and a drive gear (13) meshing with the driven gear (11) provided on the steering drive motor (7).

3. The four-wheel drive agricultural power chassis capable of turning in place according to claim 2, characterized in that, The shaft of the drive gear (13) is connected to the shaft of the steering drive motor (7) via a coupling (14).

4. The four-wheel drive agricultural power chassis capable of turning in place according to claim 2, characterized in that, The bearing bracket (10) is provided with thrust ball bearings (12) on both the upper and lower sides, and a limiting ring (15) is provided between the thrust ball bearings (12).

5. The four-wheel drive agricultural power chassis capable of turning in place according to claim 1, characterized in that, There are multiple telescopic mechanisms (2) between adjacent connecting seats (1). The telescopic mechanism (2) includes a sleeve rod (2-1) with internal threads. Screws (2-2) are installed at the left and right ends of the sleeve rod (2-1). The other end of the screw (2-2) is connected to the connecting seat (1). The sleeve rod (2-1) rotates in both directions to control the screw (2-2) to extend and retract synchronously. The spacing of the connecting seats (1) is adjusted by extending and retracting the screw (2-2).

6. The four-wheel drive agricultural power chassis capable of turning in place according to any one of claims 1-5, characterized in that, A storage box (16) is provided on the retractable mechanism (2) of two of them, and the battery (5) is placed in the storage box (16).

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