Four-wheel steering system of rodless electric tractor

Abstract

The utility model relates to the technical field of vehicle running control, and discloses a rodless type electric tractor four-wheel steering system which comprises a frame, four mounting plates are fixedly connected to the top of the frame, gear blocks are arranged on the inner sides of the bottoms of the mounting plates, the bottoms of the gear blocks are rotationally connected with a mounting plate frame, and the mounting plate frame is fixedly connected with the frame. A first motor is fixedly connected to the bottom of the mounting plate rack, a first gear is fixedly connected to the output end of the first motor, the first gear is in meshed connection with the gear block, a second motor is fixedly connected to the position, away from the center of the trolley frame, of the outer side of the mounting plate rack, and wheels are fixedly connected to the output end of the second motor; and two shells are fixedly connected to the top of the mounting plate. According to the utility model, the structure of the four-wheel steering system can be conveniently replaced, so that the subsequent replacement or maintenance is facilitated, the replacement time is shortened, and the influence on the use of the tractor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle driving control, in particular to a rodless electric tractor four-wheel steering system. Background Art

[0002] The rodless electric tractor four-wheel steering system is an advanced design, which usually adopts electronic and electric technology to achieve more flexible and efficient vehicle control. The advantages of this four-wheel steering system are that it can achieve a smaller turning radius, better controllability and higher vehicle stability.

[0003] After searching, a Chinese patent discloses a four-wheel steering system for an aircraft tractor, with the publication number CN218806089U, which includes front and rear wheel steering cylinders, a three-position four-way solenoid valve, a full hydraulic steering gear, a PLC controller and an angle sensor; the full hydraulic steering gear has a steering gear oil inlet and a steering gear oil return port, as well as two distribution ports for switching the oil supply and oil return states correspondingly with the change in the direction of rotation of the vehicle steering wheel. The full hydraulic steering gear forms three oil circuits with the front and rear wheel steering cylinders by means of the two distribution ports and the three-position four-way solenoid valve, and enables the vehicle to form three steering modes through the controller. Although this patented technology reduces the sensitivity of the steering wheel, is conducive to reducing the operating skill requirements and improving the correction efficiency, it is not convenient to replace the structure of the four-wheel steering system. It is quite troublesome to replace or repair it after damage or long-term aging, which affects the use of the tractor. Utility Model Content

[0004] In order to remedy the above shortcomings, the utility model provides a rodless electric tractor four-wheel steering system, aiming to improve the problem that the structure of the four-wheel steering system cannot be conveniently replaced, which is quite troublesome during replacement or maintenance, thereby affecting the use of the tractor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a four-wheel steering system of a rodless electric tractor, comprising a vehicle frame, four mounting plates fixedly connected to the top of the vehicle frame, a gear block is arranged on the inner side of the bottom of the mounting plate, a mounting disc frame is rotatably connected to the bottom of the gear block, a motor 1 is fixedly connected to the bottom of the mounting disc frame, a gear 1 is fixedly connected to the output end of the motor 1, the gear 1 and the gear block are meshed and connected, a motor 2 is fixedly connected to the outer side of the mounting disc frame away from the center of the vehicle frame, a wheel is fixedly connected to the output end of the motor 2, two shells are fixedly connected to the top of the mounting plate, a pressure plate is slidably connected to the inside of the shell, a support rod is rotatably connected to the bottom of the pressure plate, a block is rotatably connected to the bottom of the support rod, two columns are fixedly connected to the inside of the shell, springs are arranged on the outside of the two columns, and a brush assembly is arranged on the front side of the mounting disc frame.

[0006] As a further description of the above technical solution:

[0007] The brush assembly includes a rotating column, which is rotatably connected to the inside of the mounting disc frame, the top of the rotating column is fixedly connected to gear 2, the gear 2 and the gear block are meshingly connected, the bottom of the gear 2 is fixedly connected to a flex arm connecting rod, the front side of the mounting disc frame is fixedly connected to a mounting frame, the outside of the mounting frame is slidably connected to a slider, the bottom of the flex arm connecting rod is slidably connected to the top of the slider, the left end and the bottom end of the slider are fixedly connected to a fixing rod, the left end of the upper fixing rod and the outside of the lower fixing rod are slidably connected to a connecting rod, the adjacent sides of the two connecting rods are fixedly connected to a brush plate, the bottom of the mounting disc frame is fixedly connected to an electric push rod, and the output end of the electric push rod is fixedly connected to a limited position frame.

[0008] As a further description of the above technical solution:

[0009] The output end of the second motor passes through the mounting frame, and the wheel is rotatably connected to the inner side of the mounting frame.

[0010] As a further description of the above technical solution:

[0011] The clamping block is slidably connected to the inside of the shell, and the pressing plate is slidably connected to the outside of the column.

[0012] As a further description of the above technical solution:

[0013] The top of the spring is fixedly connected to the bottom of the pressure plate, and the bottom of the spring is fixedly connected to the inside of the shell.

[0014] As a further description of the above technical solution:

[0015] A side of the clamping block close to the gear block is designed as an inclined surface.

[0016] As a further description of the above technical solution:

[0017] Two slots are arranged on the left and right sides of the gear block.

[0018] As a further description of the above technical solution:

[0019] Two baffles are arranged outside the rotating column.

[0020] As a further description of the above technical solution:

[0021] A long groove is provided on the top of the sliding block, and the brush plate is slidably connected to the inside of the limiting frame.

[0022] As a further description of the above technical solution:

[0023] A limiting plate is arranged on a side of the limiting frame away from the wheel, and a limiting groove is arranged inside the limiting frame.

[0024] The utility model has the following beneficial effects:

[0025] 1. In the utility model, by combining structures such as a vehicle frame, a mounting plate, a gear block, a mounting disc frame, a motor 1, a gear 1, a motor 2, a wheel, a housing, a pressure plate, a support rod, a clamping block, a column, and a spring, it is possible to conveniently replace the structure of the four-wheel steering system, thereby facilitating subsequent replacement or maintenance, reducing replacement time, and avoiding affecting the use of the tractor.

[0026] 2. In the utility model, by combining the rotating column, gear 2, flexure arm connecting rod, mounting frame, slider, fixing rod, connecting rod, brush plate, limit frame, electric push rod and other structures, it is possible to conveniently clean the wheels of the tractor, so that the wheels can be kept clean, thereby providing traction and control more effectively, thereby improving the overall performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a rodless electric tractor four-wheel steering system proposed by the utility model;

[0028] Figure 2 A schematic diagram of a gear block of a four-wheel steering system of a rodless electric tractor proposed by the utility model;

[0029] Figure 3 A cross-sectional view of a mounting plate of a rodless electric tractor four-wheel steering system proposed by the utility model;

[0030] Figure 4 A schematic diagram of an offset rod of a rodless electric tractor four-wheel steering system proposed by the utility model;

[0031] Figure 5 The utility model provides a schematic diagram of the installation frame of a rodless electric tractor four-wheel steering system.

[0032] Legend:

[0033] 1. Car frame; 2. Mounting plate; 3. Gear block; 4. Mounting disc frame; 5. Motor 1; 6. Gear 1; 7. Motor 2; 8. Wheel; 9. Housing; 10. Pressure plate; 11. Support rod; 12. Block; 13. Column; 14. Spring; 15. Rotating column; 16. Gear 2; 17. Flex arm connecting rod; 18. Mounting frame; 19. Slider; 20. Fixed rod; 21. Connecting rod; 22. Brush plate; 23. Limit frame; 24. Electric push rod. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0035] Reference Figure 1-3 The utility model provides an embodiment: a rodless electric tractor four-wheel steering system, comprising a vehicle frame 1, four mounting plates 2 are fixedly connected to the top of the vehicle frame 1, the vehicle frame 1 is used to support and fix the mounting plates 2, a gear block 3 is arranged on the inner side of the bottom of the mounting plate 2, the mounting plate 2 is used to limit the gear block 3, the bottom of the gear block 3 is rotatably connected to a mounting disc frame 4, the gear block 3 is used to support and limit the mounting disc frame 4, a motor 5 is fixedly connected to the bottom of the mounting disc frame 4, the mounting disc frame 4 is used to support and fix the motor 5, the motor 5 is used to provide power for steering, the output end of the motor 5 is fixedly connected to a gear 6, the motor 5 is used to drive the gear 6 to rotate, the gear 6 is meshed with the gear block 3, and the gear 6 is used to cooperate with the gear block 3 to drive the mounting disc frame 4 to rotate.

[0036] Reference Figure 2-4 A motor 27 is fixedly connected to the outer side of the mounting disc frame 4 away from the center of the vehicle frame 1. The mounting disc frame 4 is used to support and fix the motor 27. A wheel 8 is fixedly connected to the output end of the motor 27. The motor 27 is used to drive the wheel 8 to rotate. Two shells 9 are fixedly connected to the top of the mounting plate 2. The mounting plate 2 is used to support and fix the shell 9. A pressure plate 10 is slidably connected inside the shell 9. The shell 9 is used to support and fix the pressure plate 10. The bottom of the pressure plate 10 is rotatably connected to a support rod 11. The pressure plate 10 is used to drive the support rod 11 to move. The bottom of the support rod 11 is rotatably connected to a block 12. The support rod 11 is used to connect the pressure plate 10 and the block 12. Two columns 13 are fixedly connected inside the shell 9. The shell 9 is used to support and fix the columns 13.

[0037] Reference Figure 2-4, springs 14 are provided on the outside of the two columns 13, and the columns 13 are used to prevent the springs 14 from bending. A brush assembly is provided on the front side of the mounting disc frame 4. The output end of the motor 2 7 passes through the mounting disc frame 4, which can facilitate the motor 2 7 to drive the wheel 8 to rotate. The wheel 8 is rotatably connected to the inner side of the mounting disc frame 4, and the mounting disc frame 4 is used to support and limit the wheel 8. The block 12 is slidably connected to the inside of the shell 9, and the shell 9 is used to limit the block 12. The pressure plate 10 is slidably connected to the outside of the column 13. The column 13 and the shell 9 cooperate with each other to limit the pressure plate 10, so that the pressure plate 10 is more stable when pressed down, and the top of the spring 14 is fixedly connected to the bottom of the pressure plate 10.

[0038] Reference Figure 2-4 The bottom of the spring 14 is fixedly connected to the inside of the shell 9, which can make the thrust of the spring 14 on the pressure plate 10 more stable. The side of the block 12 close to the gear block 3 is designed as an inclined surface, which can be conveniently engaged with the gear block 3 to install the gear block 3. Two slots are provided on the left and right sides of the gear block 3, which can facilitate the engagement of the gear block 3 with the block 12, so as to better connect the mounting plate 2 and the gear block 3.

[0039] Reference Figure 1 , Figure 2 and Figure 5 The brush assembly includes a rotating column 15, which is rotatably connected to the inside of the mounting disc frame 4. The mounting disc frame 4 is used to support and limit the rotating column 15. The top of the rotating column 15 is fixedly connected with a gear 2 16. The gear 2 16 and the gear block 3 are meshed. The cooperation between the gear 2 16 and the gear block 3 can facilitate the gear 2 16 to drive the rotating column 15 to rotate. The bottom of the gear 2 16 is fixedly connected with a flex arm connecting rod 17. The gear 2 16 is used to drive the flex arm connecting rod 17 to swing. The front side of the mounting disc frame 4 is fixedly connected with a mounting frame 18. The mounting disc frame 4 is used to support and fix the mounting frame 18. The outside of the mounting frame 18 is slidably connected with a slider 19. The mounting frame 18 is used to support and limit the slider 19. The bottom of the flex arm connecting rod 17 is slidably connected to the top of the slider 19.

[0040] Reference Figure 2 , Figure 3 and Figure 5The bottom of the flex arm connecting rod 17 slides and rotates on the top of the slider 19, which can facilitate the flex arm connecting rod 17 to drive the slider 19 to slide left and right under the limit of the installation frame 18. The left end and the bottom end of the slider 19 are fixedly connected to the fixing rod 20, and the slider 19 is used to drive the fixing rod 20 to move. The left end of the upper fixing rod 20 and the outside of the lower fixing rod 20 are slidably connected to the connecting rod 21, and the fixing rod 20 is used to drive the connecting rod 21 to move, and at the same time will not hinder the connecting rod 21 from moving up and down. The adjacent sides of the two connecting rods 21 are fixedly connected with a brush plate 22, and the connecting rod 21 is used to drive the brush plate 22 to move. The bottom of the mounting rack 4 is fixedly connected with an electric push rod 24, and the mounting rack 4 is used to support and fix the electric push rod 24. The output end of the electric push rod 24 is fixedly connected to the limited position frame 23, and the electric push rod 24 is used to drive the limit frame 23 to move up and down.

[0041] Reference Figure 2 , Figure 3 and Figure 5 Two baffles are provided on the outside of the rotating column 15, which can prevent the rotating column 15 from rotating out of the mounting disc frame 4. A long groove is provided on the top of the slider 19, which can facilitate the arm-bending link 17 to rotate and slide on the top of the slider 19. The brush plate 22 is slidably connected to the inside of the limit frame 23. The limit frame 23 can limit the brush plate 22 and drive the brush plate 22 to move up and down. A limit plate is provided on the side of the limit frame 23 away from the wheel 8, and a limit groove is provided inside the limit frame 23. The limit plate and the limit groove cooperate with each other to make the brush plate 22 more stable when sliding inside the limit frame 23.

[0042] Working principle: When replacing the steering system, you only need to press the pressure plate 10 first. The pressure plate 10 drives the block 12 to move by pushing the support rod 11, so that the two blocks 12 move away from each other, so that the block 12 cannot engage with the gear block 3. The steering system can be disassembled by pulling it down. The same is true when installing. After the steering system is installed, release the pressure plate 10. At this time, the spring 14 resets and pushes the pressure plate 10 to reset. Then, the block 12 is driven by the support rod 11 to move and get into the slot of the gear block 3. The gear block 3 and the mounting plate 2 are connected and fixed to complete the installation. This makes it easy to replace the structure of the four-wheel steering system, thereby facilitating subsequent replacement or maintenance, reducing replacement time, and avoiding affecting the use of the tractor. When cleaning the wheel 8, you only need to start the electric push rod 24. The electric push rod 2 4 can drive the limit frame 23 to move up and down, thereby driving the brush plate 22 to fit with the wheel 8. The brush plate 22 can clean the wheel 8 when the wheel 8 rotates. At the same time, when turning, the rotation of the mounting disc frame 4 will drive the gear 2 16 to move, thereby driving the gear 1 6 to rotate under the meshing connection with the gear block 3, thereby driving the arm connecting rod 17 to rotate, and then driving the fixed rod 20 to move through the slider 19, thereby driving the brush plate 22 to move left and right through the connecting rod 21, further improving the cleaning effect. At the same time, the electric push rod 24 can drive the brush plate 22 to move upward through the limit frame 23, and when the wheel 8 does not need to be cleaned, the brush plate 22 is retracted and the wheel 8 is not cleaned, so that the wheel 8 of the tractor can be conveniently cleaned, so that the wheel 8 can be kept clean, thereby more effectively providing traction and control, and then improving the overall performance.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rodless electric tractor four-wheel steering system, comprising a vehicle frame (1), characterized in that: Four mounting plates (2) are fixedly connected to the top of the vehicle frame (1); a gear block (3) is arranged on the inner side of the bottom of the mounting plate (2); the bottom of the gear block (3) is rotatably connected to a mounting frame (4); the bottom of the mounting frame (4) is fixedly connected to a motor 1 (5); the output end of the motor 1 (5) is fixedly connected to a gear 1 (6); the gear 1 (6) is meshingly connected to the gear block (3); the outer side of the mounting frame (4) away from the center of the vehicle frame (1) is fixedly connected to a motor 2 (7); the motor The output end of the second (7) is fixedly connected to a wheel (8), the top of the mounting plate (2) is fixedly connected to two shells (9), the interior of the shell (9) is slidably connected to a pressure plate (10), the bottom of the pressure plate (10) is rotatably connected to a support rod (11), the bottom of the support rod (11) is rotatably connected to a clamping block (12), the interior of the shell (9) is fixedly connected to two columns (13), the outside of the two columns (13) are both provided with springs (14), and the front side of the mounting disc frame (4) is provided with a brush assembly.

2. A rodless electric tractor four-wheel steering system according to claim 1, characterized in that: The brush assembly comprises a rotating column (15), the rotating column (15) is rotatably connected to the inside of the mounting disc frame (4), the top of the rotating column (15) is fixedly connected to a second gear (16), the second gear (16) and the gear block (3) are meshingly connected, the bottom of the second gear (16) is fixedly connected to a flex arm connecting rod (17), the front side of the mounting disc frame (4) is fixedly connected to a mounting frame (18), the outside of the mounting frame (18) is slidably connected to a slider (19), the flex arm connecting rod (17) is fixedly connected to the front side of the mounting disc frame (4), the outside of the mounting frame (18) is slidably connected to a slider (19), and the flex arm connecting rod (17) is fixedly connected to the front side of the mounting disc frame (4). The bottom of the mounting plate (4) is slidably connected to the top of the slider (19), the left end and the bottom end of the slider (19) are fixedly connected to a fixing rod (20), the left end of the upper fixing rod (20) and the outside of the lower fixing rod (20) are slidably connected to a connecting rod (21), the adjacent sides of the two connecting rods (21) are fixedly connected to a brush plate (22), the bottom of the mounting plate frame (4) is fixedly connected to an electric push rod (24), and the output end of the electric push rod (24) is fixedly connected to a limit position frame (23).

3. A rodless electric tractor four-wheel steering system according to claim 1, characterized in that: The output end of the second motor (7) passes through the mounting frame (4), and the wheel (8) is rotatably connected to the inner side of the mounting frame (4).

4. A rodless electric tractor four-wheel steering system according to claim 1, characterized in that: The clamping block (12) is slidably connected to the inside of the housing (9), and the pressing plate (10) is slidably connected to the outside of the column (13).

5. The rodless electric tractor four-wheel steering system according to claim 1, characterized in that: The top of the spring (14) is fixedly connected to the bottom of the pressure plate (10), and the bottom of the spring (14) is fixedly connected to the inside of the housing (9).

6. A rodless electric tractor four-wheel steering system according to claim 1, characterized in that: A side of the clamping block (12) close to the gear block (3) is designed as an inclined surface.

7. A rodless electric tractor four-wheel steering system according to claim 1, characterized in that: Two slots are provided on the left and right sides of the gear block (3).

8. A rodless electric tractor four-wheel steering system according to claim 2, characterized in that: Two baffles are arranged outside the rotating column (15).

9. A rodless electric tractor four-wheel steering system according to claim 2, characterized in that: A long groove is provided on the top of the sliding block (19), and the brush plate (22) is slidably connected to the inside of the limiting frame (23).

10. A rodless electric tractor four-wheel steering system according to claim 2, characterized in that: A limiting plate is provided on a side of the limiting frame (23) away from the wheel (8), and a limiting groove is provided inside the limiting frame (23).

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