Detection equipment for compensation mechanism of electric steering gear

Abstract

The utility model relates to electric steering gear compensation mechanism detection equipment, and belongs to the technical field of electric steering gear compensation mechanism detection equipment. The detection equipment for the compensation mechanism of the electric steering gear comprises a bottom frame, a clamping assembly, a lifting sliding plate, a transverse moving sliding plate, a T-shaped plate and a detection rod, a clamping assembly is arranged on the bottom frame; a lifting sliding plate is mounted above the clamping assembly through a mounting seat and a lifting control assembly; a transverse moving sliding plate is mounted on the lifting sliding plate through a transverse moving control assembly; a T-shaped plate is arranged on the transverse sliding plate through a pin shaft; the two sides of the upper end of the T-shaped plate are connected with the transverse moving sliding plate through buffer springs. The lower end of the T-shaped plate is provided with a detection rod. The electric steering gear compensation mechanism detection equipment is compact in structure and ingenious in design, solves the problem that an existing electric steering gear compensation detection mechanism is small in error-tolerant rate, and is particularly suitable for detection and use of the electric steering gear compensation mechanism.

Description

Technical Field

[0001] This utility model relates to a testing device for an electric steering compensation mechanism, belonging to the technical field of testing devices for electric steering compensation mechanisms. Background Technology

[0002] Electric power steering is a crucial component in automobiles for achieving steering. Its mechanism involves the motor torque being amplified through a worm gear and worm reduction mechanism, generating an assist effect that drives the tie rod to steer the wheels.

[0003] As the principle suggests, worm gear and worm reduction mechanisms must be wear-resistant. Since electric vehicles require a quieter cabin than traditional gasoline-powered cars, the worm gear and worm must operate with low noise. From a wear-resistance perspective, worm gears and worms are ideally made of high-hardness metal materials, but achieving low noise during metal-to-metal meshing is challenging. In engineering, nylon is used for noise reduction in worm gears. However, nylon is not wear-resistant, so a clearance compensation mechanism is introduced to ensure the worm gear and worm are always tightly meshed. When the worm gear wears, a spring in the compensation mechanism applies force to the worm, eliminating the meshing clearance. For the compensation mechanism to function this way, it must also meet certain oscillation requirements, necessitating specialized equipment during production to detect this oscillation.

[0004] Existing testing equipment, such as the electric steering compensation mechanism testing equipment disclosed in the utility model patent with authorization announcement number CN216348298U, can meet the usage requirements to a certain extent. However, its connecting tip is fixed on the first sliding stage, and the connecting tip must be precisely aligned with the workpiece to complete the testing work. This results in a low error tolerance. Therefore, it is necessary to develop a new testing equipment to solve the above problems of existing equipment. Summary of the Invention

[0005] The purpose of this utility model is to provide a test device for electric steering compensation mechanism that is compact in structure and ingenious in design, so as to solve the problem of low fault tolerance in existing electric steering compensation test mechanisms.

[0006] The technical solution of this utility model is:

[0007] An electric steering gear compensation mechanism testing device includes a base frame, a clamping assembly, a lifting slide plate, a lateral slide plate, a T-shaped plate, and a testing rod; characterized in that: the base frame is equipped with a clamping assembly; a lifting slide plate is mounted above the clamping assembly via a mounting base and a lifting control assembly; a lateral slide plate is mounted on the lifting slide plate via a lateral control assembly; a T-shaped plate is mounted on the lateral slide plate via a pin shaft; the upper ends of the T-shaped plate are connected to the lateral slide plate via buffer springs; and a testing rod is mounted on the lower end of the T-shaped plate.

[0008] A limiting ring ridge is provided on the lower circumferential surface of the detection rod.

[0009] The lifting control assembly includes a lifting cylinder and a vertical slide rail; a lifting slide plate is slidably mounted on the mounting base via the vertical slide rail; the mounting base is equipped with a lifting cylinder; the lifting cylinder is connected to the lifting slide plate.

[0010] The lateral movement control assembly includes a lateral movement drive cylinder, a guide rod, a guide plate, a tension / compression sensor, and a displacement sensor. A guide plate is slidably mounted on the lifting slide via the guide rod. A lateral movement drive cylinder is mounted on the lifting slide above the guide rod. A lateral movement slide is slidably mounted on the lifting slide below the guide rod via a transverse guide rail. The lateral movement drive cylinder is connected to the guide plate. The guide plate is connected to the lateral movement slide via the tension / compression sensor. A displacement sensor is mounted on the lifting slide on the other side of the lateral movement slide. The displacement sensor is in contact with the lateral movement slide.

[0011] The clamping assembly includes guide columns, positioning plates, floating plates, positioning sleeves, and positioning ring plates; the base frame is equipped with positioning plates via multiple sets of guide columns; positioning ring plates are mounted on the positioning plates; floating plates are slidably mounted on the guide columns below the positioning plates; and return springs are fitted onto the guide columns below the floating plates.

[0012] The advantages of this utility model are:

[0013] This electric steering gear compensation mechanism testing equipment is compact and ingeniously designed. It adopts a T-shaped plate mounting structure for the testing rod. With this design, when the testing rod deviates from the testing position, the testing rod can drive the T-shaped plate to make adaptive adjustments. This solves the problem of low fault tolerance in existing electric steering gear compensation testing mechanisms and is particularly suitable for the needs of testing electric steering gear compensation mechanisms. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the isometric structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of this utility model after removing the base frame;

[0019] Figure 6 for Figure 5 Front view structural diagram;

[0020] Figure 7This is a partial structural schematic diagram of the present invention;

[0021] Figure 8 This is a schematic diagram of the clamping assembly of this utility model.

[0022] In the diagram: 1. Base frame; 2. Clamping assembly; 3. Mounting base; 4. Lifting slide plate; 5. Lateral slide plate; 6. Pin shaft; 7. T-shaped plate; 8. Buffer spring; 9. Detection rod; 10. Limiting ring ridge; 11. Lifting cylinder; 12. Vertical slide rail; 13. Guide rod; 14. Guide plate; 15. Lateral drive cylinder; 16. Horizontal guide rail; 17. Reset spring; 18. Tension / compression sensor; 19. Displacement sensor; 20. Guide column; 21. Positioning plate; 22. Positioning ring plate; 23. Floating plate. Detailed Implementation

[0023] The testing equipment for the electric steering compensation mechanism includes a base frame 1, a clamping assembly 2, a lifting slide plate 4, a lateral slide plate 5, a T-shaped plate 7, and a testing rod 9 (see the attached instruction manual). Figure 1 , 2 and 3).

[0024] The base frame 1 is equipped with clamping assembly 2 (see instruction manual). Figure 1 and 2 The clamping assembly 2 includes a guide column 20, a positioning plate 21, a floating plate 23, a positioning sleeve 24, and a positioning ring plate 22 (see the attached instruction manual). Figure 8 ).

[0025] The base frame 1 is equipped with positioning plates 21 via multiple sets of guide columns 20; positioning ring plates 22 are mounted on the positioning plates 21. The positioning ring plates 22 are provided with positioning holes corresponding to the upper end of the workpiece's electric steering gear.

[0026] A floating plate 23 is slidably mounted on the guide column 20 below the positioning plate 21; a positioning sleeve 24 is mounted on the floating plate 23; and a positioning countersunk hole corresponding to the lower end of the workpiece electric steering gear is provided on the positioning sleeve 24.

[0027] A return spring 17 is fitted onto the guide column 20 below the floating plate 23 (see instruction manual appendix). Figure 8 During operation, the floating plate 23 can be pressed down to overcome the elastic force of the return spring 17 and move downward. Then, the workpiece is placed between the positioning sleeve 24 and the positioning ring plate 22, and then the floating plate 23 is released. At this time, the workpiece will be clamped and fixed under the action of the return spring 17. During this process, the positioning sleeve 24 and the positioning ring plate 22 can position the workpiece, thus avoiding the problem of it deviating from the detection position.

[0028] The lifting slide plate 4 is mounted on the top of the clamping assembly 2 via the mounting base 3 and the lifting control assembly (see the instruction manual). Figure 1 ,2 (and 3); the lifting control component includes a lifting cylinder 11 and a vertical slide rail 12; a lifting slide plate 4 is slidably mounted on the mounting base 3 via the vertical slide rail 12; the lifting cylinder 11 is mounted on the mounting base 3; the lifting cylinder 11 is connected to the lifting slide plate 4.

[0029] During operation, the lifting cylinder 11 drives the lifting slide plate 4 to move up and down along the vertical slide rail 12.

[0030] The lifting slide 4 is equipped with a lateral slide 5 via a lateral control assembly (see instruction manual appendix). Figure 7 ).

[0031] The lateral movement control assembly includes a lateral movement drive cylinder 15, a guide rod 13, a guide plate 14, a tension / compression sensor 18, and a displacement sensor 19 (see the attached instruction manual). Figure 7 A guide plate 14 is slidably mounted on the lifting slide plate 4 via a guide rod 13; a transverse drive cylinder 15 is mounted on the lifting slide plate 4 above the guide rod 13; a transverse slide plate 5 is slidably mounted on the lifting slide plate 4 below the guide rod 13 via a transverse guide rail 16; the transverse drive cylinder 15 is connected to the guide plate 14; the guide plate 14 is connected to the transverse slide plate 5 via a tension / compression sensor 18.

[0032] A displacement sensor 19 is installed on the lifting slide 4 on the other side of the transverse slide 5; the displacement sensor 19 is in contact with the transverse slide 5.

[0033] When the transverse drive cylinder 15 is working, it can drive the transverse slide plate 5 to slide back and forth along the transverse guide rail 16 through the guide plate 14 and the tension and compression sensor 18. When the transverse guide rail 16 moves, the tension and compression sensor 18 and the displacement sensor 19 can detect the force and displacement of the transverse slide plate 5.

[0034] A T-shaped plate 7 is mounted on the transverse sliding plate 5 via a pin 6; the upper ends of the T-shaped plate 7 are connected to the transverse sliding plate 5 via buffer springs 8 on both sides; a detection rod 9 is mounted on the lower end of the T-shaped plate 7. A limit ring 10 is provided on the lower circumferential surface of the detection rod 9 (see the attached instruction manual). Figure 7 When the detection rod 9 is subjected to force, it can rotate around the pin 6, and under the action of the buffer spring 8, it always tends to return to the middle position.

[0035] The testing equipment for the electric steering compensation mechanism is also equipped with a CNC system to control the movement of each component. This CNC system is an existing system.

[0036] When the electric steering compensation mechanism testing equipment is working, it first presses down the floating plate 23 so that it moves down after overcoming the elastic force of the return spring 17. Then, it places the workpiece between the positioning sleeve 24 and the positioning ring plate 22, and then releases the floating plate 23. At this time, the workpiece will be clamped and fixed under the action of the elastic force of the return spring 17.

[0037] After the workpiece is clamped and fixed, the lifting cylinder 11 and the lateral drive cylinder 15 work together to insert the detection rod 9 into the upper end of the workpiece and then stop. Subsequently, the lateral drive cylinder 15 applies a preset output force to the workpiece through the lateral slide plate 5, the T-shaped plate 7, and the detection rod 9. During this process, the displacement sensor 19 can detect the displacement of the lateral slide plate 5. This displacement is the compensation amount of the electric steering system.

[0038] After the testing equipment for the electric steering compensation mechanism completes the test, all components are reset, and then a new workpiece is installed, allowing the testing equipment to enter the next work cycle.

[0039] This electric steering compensation mechanism testing equipment has a compact structure and ingenious design. It adopts a structure design of mounting the testing rod 9 on a T-shaped plate 7. With this design, when the testing rod 9 deviates from the testing position, the testing rod 9 can drive the T-shaped plate 7 to make adaptive adjustments. This solves the problem of low fault tolerance in existing electric steering compensation testing mechanisms and is particularly suitable for the needs of testing electric steering compensation mechanisms.

Claims

1. A testing device for an electric steering gear compensation mechanism, comprising a base frame (1), a clamping assembly (2), a lifting slide plate (4), a lateral sliding slide plate (5), a T-shaped plate (7), and a testing rod (9); characterized in that: The base frame (1) is equipped with a clamping assembly (2); a lifting slide plate (4) is mounted on the top of the clamping assembly (2) via a mounting base (3) and a lifting control assembly; a transverse slide plate (5) is mounted on the lifting slide plate (4) via a transverse control assembly; a T-shaped plate (7) is mounted on the transverse slide plate (5) via a pin (6); the upper ends of the T-shaped plate (7) are connected to the transverse slide plate (5) via buffer springs (8); a detection rod (9) is mounted on the lower end of the T-shaped plate (7).

2. The testing equipment for an electric steering gear compensation mechanism according to claim 1, characterized in that: A limiting ring edge (10) is provided on the lower circumferential surface of the detection rod (9).

3. The testing equipment for an electric steering gear compensation mechanism according to claim 1, characterized in that: The lifting control assembly includes a lifting cylinder (11) and a vertical slide rail (12); a lifting slide plate (4) is slidably mounted on the mounting base (3) via the vertical slide rail (12); the lifting cylinder (11) is mounted on the mounting base (3); the lifting cylinder (11) is connected to the lifting slide plate (4).

4. The testing equipment for an electric steering gear compensation mechanism according to claim 1, characterized in that: The lateral movement control assembly includes a lateral movement drive cylinder (15), a guide rod (13), a guide plate (14), a tension / compression sensor (18), and a displacement sensor (19). The guide plate (14) is slidably mounted on the lifting slide plate (4) via the guide rod (13). The lateral movement drive cylinder (15) is mounted on the lifting slide plate (4) above the guide rod (13). The lateral movement slide plate (5) is slidably mounted on the lifting slide plate (4) below the guide rod (13) via a transverse guide rail (16). The lateral movement drive cylinder (15) is connected to the guide plate (14). The guide plate (14) is connected to the lateral movement slide plate (5) via the tension / compression sensor (18). The displacement sensor (19) is mounted on the lifting slide plate (4) on the other side of the lateral movement slide plate (5). The displacement sensor (19) is in contact with the lateral movement slide plate (5).

5. The testing equipment for an electric steering gear compensation mechanism according to claim 1, characterized in that: The clamping assembly (2) includes a guide column (20), a positioning plate (21), a floating plate (23), a positioning sleeve (24), and a positioning ring plate (22); the base frame (1) is equipped with a positioning plate (21) via multiple sets of guide columns (20); the positioning plate (21) is equipped with a positioning ring plate (22); the guide column (20) below the positioning plate (21) is slidably equipped with a floating plate (23); the floating plate (23) is equipped with a positioning sleeve (24); the guide column (20) below the floating plate (23) is fitted with a return spring (17).

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