A comprehensive performance test bench for automobile steering column adjusting structure

Abstract

The application relates to a comprehensive performance test platform of a steering column adjusting structure of an automobile, and belongs to the technical field of automobile part detection equipment. The comprehensive performance test platform of the steering column adjusting structure of the automobile comprises a rack, an assembly clamping seat, a push-pull cylinder, a pneumatic balance cylinder, an axial sliding force testing device and a handle opening force testing device; the rack is provided with a rotating plate; one end of the rotating plate is hingedly connected with the rack; a pneumatic balance cylinder is hingedly connected to the rack below the other end of the rotating plate; the output end of the pneumatic balance cylinder is hingedly connected with the rotating plate; the rack on one side of the pneumatic balance cylinder is slidably provided with a lifting platform through a support and a sliding rail. The comprehensive performance test platform of the steering column adjusting structure of the automobile solves the problems of incomplete function, narrow adaptation range and inaccurate test of the existing comprehensive performance test device of the steering column of the automobile, and is especially suitable for the needs of the comprehensive performance test of the steering column adjusting structure of the automobile.

Description

Technical Field

[0001] This invention relates to a comprehensive performance testing bench for an automotive steering column adjustment structure, belonging to the technical field of automotive parts testing equipment. Background Technology

[0002] In the field of automotive steering technology, after the steering column is manufactured, it must undergo performance testing in a laboratory before it meets factory requirements. Generally, the axial slip force, handle opening force, and angular slip force of the steering column need to be tested before leaving the factory. Currently available comprehensive performance testing devices, such as the comprehensive performance testing mechanism for steering columns disclosed in invention patent application CN108827662A, while meeting the testing needs of some automotive steering column models, have the following problems:

[0003] 1. Existing comprehensive performance testing institutions cannot complete the test of handle opening force, which is a problem of incomplete function.

[0004] 2. Existing comprehensive performance testing mechanisms have the problem that the positions of the test motor and fixture cannot be changed, which means they can only adapt to the testing needs of one type of steering column, resulting in a narrow range of applications.

[0005] 3. Existing methods for testing the angular and axial slip forces of automotive steering columns involve connecting one end of the steering column to a test motor via a fixture, and then rotating that end of the steering column using the motor. However, in actual use, the steering column is moved by the steering wheel to adjust its angle and axial position. Therefore, existing testing methods for the angular and axial slip forces of automotive steering columns do not match the actual adjustment of the steering column and are therefore inaccurate. Summary of the Invention

[0006] The purpose of this invention is to provide a comprehensive performance testing platform for an automotive steering column adjustment structure that is compact in structure and ingenious in design, thereby solving the problems of incomplete functionality, narrow applicability, and insufficient testing accuracy of existing automotive steering column comprehensive performance testing devices.

[0007] The technical solution of this invention is:

[0008] A comprehensive performance testing platform for an automotive steering column adjustment structure includes a frame, an assembly clamp, a push-pull cylinder, a pneumatic balance cylinder, an axial sliding force testing device, and a handle opening force testing device. The platform is characterized by: a rotating plate mounted on the frame; one end of the rotating plate is hinged to the frame; a pneumatic balance cylinder is hinged to the frame below the other end of the rotating plate; the output end of the pneumatic balance cylinder is hinged to the rotating plate; a lifting platform is slidably mounted on the frame on one side of the pneumatic balance cylinder via a bracket and a slide rail; an adjusting screw is mounted on the bracket inside the lifting platform via a bearing seat; the adjusting screw is connected to the lifting platform; a push-pull cylinder is hinged to the lifting platform; the push-pull cylinder is hinged to one end of the rotating plate via a tension / compression sensor; an axial sliding force testing device and a handle opening force testing device are sequentially mounted on the rotating plate on one side of the push-pull cylinder; an assembly clamp is mounted on the frame inside the handle opening force testing device via a support plate.

[0009] The support plate is symmetrically provided with two sets of vertical assembly holes; the assembly clamp is provided with two sets of horizontal assembly holes; the assembly clamp is installed on the support plate through the horizontal assembly holes and locking bolts in cooperation with the vertical assembly holes.

[0010] The handle opening force testing device includes a horizontal sliding block, a horizontal lead screw, a lifting slide block, a vertical lead screw, a test motor, and a locking fork. The horizontal sliding block is slidably mounted on the rotating plate via a guide rail. A horizontal lead screw is mounted on the rotating plate on one side of the horizontal sliding block via a bearing seat. The horizontal lead screw is connected to the horizontal sliding block. A lifting slide block is slidably mounted on the horizontal sliding block via a guide rail. A locking fork is mounted on the lifting slide block via a test motor and a swing arm. A vertical lead screw is mounted on the horizontal sliding block inside the lifting slide block. The vertical lead screw is connected to the lifting slide block.

[0011] The axial sliding force testing device includes a transverse sliding plate, a longitudinal sliding block, a lifting sliding plate, an axial cylinder, and a locking plate. The transverse sliding plate is slidably mounted on the rotating plate via a guide rail. A control screw is mounted on the rotating plate below the transverse sliding plate via a bearing seat. The control screw is connected to the transverse sliding plate. A longitudinal sliding block is slidably mounted on the transverse sliding plate via a guide rail. A longitudinal screw is mounted on the transverse sliding plate on one side of the longitudinal sliding block. The longitudinal screw is connected to the longitudinal sliding block. A lifting sliding plate is slidably mounted on the longitudinal sliding block via a guide rail. A sliding plate screw is mounted on the longitudinal sliding block inside the lifting sliding plate via a bearing seat. The sliding plate screw is connected to the lifting sliding plate. An axial cylinder is mounted on the lifting sliding plate. A locking plate is mounted at one end of the axial cylinder via a tension / compression sensor. Multiple locking rings are evenly installed on the circumferential surface of one end of the locking plate.

[0012] The advantages of this invention are:

[0013] The comprehensive performance testing bench for automotive steering column adjustment structure is compact and ingeniously designed. It can test various performance characteristics under simulated real vehicle conditions. Furthermore, the testing positions of each testing component of the comprehensive performance testing bench can be changed according to the different models of the test workpiece. This solves the problems of incomplete functions, narrow applicability, and insufficient testing accuracy of existing automotive steering column comprehensive performance testing devices, making it particularly suitable for the comprehensive performance testing needs of automotive steering column adjustment structures. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the rear view structure of the present invention;

[0017] Figure 4 This is a top view of the structure of the present invention;

[0018] Figure 5 This is a schematic diagram of the rotating plate and the angle sliding force testing device of the present invention;

[0019] Figure 6 This is a schematic diagram of the structure of the frame and assembly clamp of the present invention;

[0020] Figure 7 for Figure 6 Front view structural diagram;

[0021] Figure 8 for Figure 6 Enlarged structural diagram at point A;

[0022] Figure 9 This is a schematic diagram of the rotating plate and its upper components of the present invention;

[0023] Figure 10 for Figure 9 A schematic diagram of the rear view structure;

[0024] Figure 11 for Figure 9 Enlarged structural diagram at point B;

[0025] Figure 12 for Figure 10 A schematic diagram of the structure after removing the axial slip force testing device;

[0026] Figure 13 for Figure 12 Enlarged structural diagram at point C;

[0027] Figure 14 for Figure 1 A magnified structural diagram at point D.

[0028] In the diagram: 1. Frame; 2. Rotating plate; 3. Pneumatic balance cylinder; 4. Support; 5. Lifting platform; 6. Adjusting screw; 7. Push-pull cylinder; 8. Axial sliding force testing device; 9. Handle opening force testing device; 10. Support plate; 11. Assembly clamp; 12. Vertical assembly hole; 13. Horizontal assembly hole; 14. Locking bolt; 15. Horizontal slide; 16. Horizontal screw; 17. Lifting slide; 18. Test motor; 19. Snap-fit ​​fork; 20. Vertical screw; 21. Horizontal slide plate; 22. Control screw; 23. Longitudinal slide; 24. Longitudinal screw; 25. Lifting slide plate; 26. Slide plate screw; 27. Axial cylinder; 28. Snap-fit ​​ring; 29. ​​Snap-fit ​​disc; 30. Car steering wheel; 31. Swing arm. Detailed Implementation

[0029] The comprehensive performance test bench for the automotive steering column adjustment structure includes a frame 1, an assembly clamp 11, a push-pull cylinder 7, a pneumatic balance cylinder 3, an axial sliding force testing device 8, and a handle opening force testing device 9 (see the instruction manual appendix). Figure 1 and 2 ).

[0030] A rotating plate 2 is provided on the frame 1; one end of the rotating plate 2 is hinged to the frame 1 (see the instruction manual appendix). Figure 1 and 5 When the rotating plate 2 is subjected to force, it will rotate around the hinge point connected to the frame 1.

[0031] A pneumatic balance cylinder 3 is hinged to the frame 1 below the other end of the rotating plate 2 (see instruction manual). Figure 5 The output end of the pneumatic balance cylinder 3 is hinged to the rotating plate 2.

[0032] The pneumatic balance cylinder 3 is an externally purchased device. It can provide support for the rotating plate 2, making it in a weightless state. This ensures that the force applied to the rotating plate 2 by the push-pull cylinder 7 during operation can be transferred to the workpiece installed on the assembly clamp 11 through the rotating plate 2. This ensures the accuracy of detecting the workpiece angle sliding force through the push-pull cylinder 7.

[0033] A lifting platform 5 is slidably mounted on the frame 1 on one side of the pneumatic balance cylinder 3 via a bracket 4 and a slide rail; an adjusting screw 6 is mounted on the bracket 4 inside the lifting platform 5 via a bearing seat; the adjusting screw 6 is connected to the lifting platform 5 (see the instruction manual appendix). Figure 5 During operation, the height of the lifting platform 5 can be adjusted by rotating the adjusting screw 6.

[0034] The purpose of setting up the lifting platform 5 in this way is to adjust the height of the push-pull cylinder 7 by adjusting the height of the lifting platform 5 during operation, thereby adjusting the angle of the rotating plate 2 connected to the push-pull cylinder 7 so that it is consistent with the assembly angle of the workpiece.

[0035] A push-pull cylinder 7 is hinged to the lifting platform 5; the push-pull cylinder 7 is hinged to one end of the rotating plate 2 via a tension / compression sensor (see the instruction manual appendix). Figure 5 When the push-pull cylinder 7 is working, it can pull the rotating plate 2 to rotate through the tension and pressure sensor.

[0036] An axial sliding force testing device 8 is sequentially mounted on the rotating plate 2 on one side of the push-pull cylinder 7 (see the instruction manual appendix). Figure 1 and 2 The axial sliding force testing device 8 includes a transverse sliding plate 21, a longitudinal sliding block 23, a lifting sliding plate 25, an axial cylinder 27, and a locking plate 29 (see the instruction manual appendix). Figure 10 and 14 ).

[0037] A transverse sliding plate 21 is slidably mounted on the rotating plate 2 via a guide rail; a control screw 22 is mounted on the rotating plate 2 below the transverse sliding plate 2 via a bearing seat; the control screw 22 is connected to the transverse sliding plate 21 (see the instruction manual appendix). Figure 10 During operation, the transverse slide plate 21 can be driven to move back and forth on the rotating plate 2 by rotating the control screw 22. In this way, the position of the transverse slide plate 21 on the rotating plate 2 can be adjusted by rotating the control screw 22.

[0038] A longitudinal slide block 23 is slidably mounted on the transverse sliding plate 21 via a guide rail; a longitudinal lead screw 24 is mounted on the transverse sliding plate 21 on one side of the longitudinal slide block 23; the longitudinal lead screw 24 is connected to the longitudinal slide block 23 (see the instruction manual appendix). Figure 14 During operation, the longitudinal slide block 23 can be controlled by rotating the longitudinal lead screw 24 to slide back and forth on the transverse slide plate 21 along the guide rail. Thus, the position of the longitudinal slide block 23 can be adjusted by rotating the longitudinal lead screw 24.

[0039] A lifting slide plate 25 is slidably mounted on the longitudinal slide block 23 via a guide rail; a slide plate screw 26 is mounted on the longitudinal slide block 23 inside the lifting slide plate 25 via a bearing seat; the slide plate screw 26 is connected to the lifting slide plate 25 (see the instruction manual appendix). Figure 10 and 14 During operation, the height of the lifting slide plate 25 can be adjusted by rotating the slide plate screw 26.

[0040] The purpose of arranging the transverse slide 21, longitudinal slide 23, and lifting slide 25 in this way is to allow operators to adjust the positions of the axial cylinder 27 and the clamping plate 29 on the lifting slide 25 during operation. This enables the axial cylinder 27 and the clamping plate 29 to be adapted to the inspection of various workpiece types.

[0041] An axial cylinder 27 is mounted on the lifting slide plate 25; one end of the axial cylinder 27 is fitted with a clamping plate 29 via a tension / compression sensor; multiple clamping rings 28 are evenly installed on the circumferential surface of one end of the clamping plate 29 (see the instruction manual appendix). Figure 14 During operation, a car steering wheel 30 needs to be installed on one end of the workpiece (see instruction manual appendix). Figure 6 , 7 (and 8). After the car steering wheel 30 is installed on the workpiece, the snap-fit ​​disc 29 can maintain a snap-fit ​​connection with the car steering wheel 30 through the snap-fit ​​ring 28. In this way, during operation, the axial cylinder 27 can drive the workpiece to move synchronously through the snap-fit ​​disc 29, the snap-fit ​​ring 28 and the car steering wheel 30, thus achieving the purpose of detecting the axial sliding force of the workpiece.

[0042] The rotating plate 2 below the axial sliding force testing device 8 is equipped with a handle opening force testing device 9 (see instruction manual appendix). Figure 1 and 2 The handle opening force testing device 9 includes a horizontal sliding block 15, a horizontal lead screw 16, a lifting sliding block 17, a vertical lead screw 20, a test motor 18, and a locking fork 19 (see the instruction manual appendix). Figure 11 , 12 and 13).

[0043] A transverse slide block 15 is slidably mounted on the rotating plate 2 via a guide rail; a transverse lead screw 16 is mounted on the rotating plate 2 on one side of the transverse slide block 15 via a bearing seat; the transverse lead screw 16 is connected to the transverse slide block 15 (see the instruction manual appendix). Figure 13 During operation, the transverse slide 15 can be driven to move back and forth along the rotating plate 2 by rotating the transverse lead screw 16, thus achieving the purpose of adjusting the position of the transverse slide 15 during operation.

[0044] A lifting slide 17 is slidably mounted on a guide rail on a transverse slide 15; a vertical lead screw 20 is mounted on the transverse slide 15 inside the lifting slide 17; the vertical lead screw 20 is connected to the lifting slide 17. During operation, the position of the lifting slide 17 can be adjusted by rotating the vertical lead screw 20.

[0045] The purpose of setting the transverse slide 15 and the lifting slide 17 in this way is to adjust the position of the test motor 18 and the locking fork 19 on the lifting slide 17 by adjusting the position of the transverse slide 15 and the lifting slide 17 during operation, so as to make it adaptable to the inspection of various types of workpieces.

[0046] The lifting slide 17 is equipped with a snap-fit ​​fork 19 via the test motor 18 and the swing arm 31 (see the instruction manual). Figure 11 The output of the test motor 18 is equipped with a torque sensor. During operation, after the workpiece handle is inserted into the locking fork 19, the test motor 18 can open or close the handle by rotating it through the swing arm 31 and the locking fork 19. In this process, the torque sensor on the test motor 18 can detect the opening force of the workpiece handle.

[0047] An assembly clamp 11 is mounted on the frame 1 inside the handle opening force testing device 9 via a support plate 10 (see instruction manual appendix). Figure 6 and 7 ).

[0048] The support plate 10 has two sets of vertical mounting holes 12 symmetrically arranged; the mounting clamp 11 has two sets of horizontal mounting holes 13; the mounting clamp 11 is installed on the support plate 10 through the horizontal mounting holes 13 and the locking bolts 14 in cooperation with the vertical mounting holes 12 (see the appendix of the instruction manual). Figure 6 and 7 During operation, the workpiece to be inspected can be fixed to the assembly fixture 11 with bolts.

[0049] The purpose of setting up the assembly clamp 11 supporting the upright plate 10 in this way is to allow the height and tilt angle of the assembly clamp 11 to be adjusted after loosening the locking bolt 14 during operation. This allows the tilt angle of the assembly clamp 11 to be adjusted according to the actual working conditions of different workpieces, ensuring that the tilt angle of the workpiece is consistent with its actual working condition after it is mounted on the assembly clamp 11, thus simulating the actual working conditions.

[0050] When the comprehensive performance test bench for the automotive steering column adjustment structure is working, firstly, the working position of the assembly clamp 11 is adjusted according to the model of the workpiece to be tested. Then, according to the position of the assembly clamp 11, the tilt angle of the rotating plate 2 is adjusted, the position of the locking plate 29 on the axial sliding force test device 8 is adjusted, and the position of the locking fork 19 on the handle opening force test device 9 is adjusted.

[0051] After completing the above steps, secure the workpiece to the assembly clamp 11 with bolts. At this point, ensure the handle on the workpiece is inserted into the locking fork 19 of the handle opening force testing device 9. Then, install a suitable automotive steering wheel 30 (see the instruction manual appendix) onto one end of the workpiece. Figure 6 and 7 The workpiece is then connected to the snap ring 28 and the snap ring 29 on the axial sliding force testing device 8, thus completing the assembly of the workpiece.

[0052] After the workpiece is assembled, the test motor 18, swing arm 31, and locking fork 19 of the handle opening force testing device 9 drive the handle to rotate and open the handle during this process. The torque sensor on the test motor 18 records and detects the workpiece handle opening force, thus completing the workpiece handle opening force testing.

[0053] After the handle opening force testing device 9 completes the workpiece handle opening force test, one end of the axial cylinder 27 on the axial sliding force testing device 8 can pull one end of the workpiece forward through the clamping plate 29 and clamping ring 28. After sliding a certain distance, the axial cylinder 27 drives the workpiece to reset through the clamping plate 29 and clamping ring 28. During this process, the tension and compression sensors on the axial sliding force testing device 8 will record and detect the axial sliding force of the workpiece, thus completing the workpiece axial sliding force test.

[0054] After the axial sliding force testing device 8 completes the detection of the axial sliding force of the workpiece, the push-pull cylinder 7 pushes the rotating plate 2 downwards a certain distance and then resets. During this process, since the rotating plate 2 is in a state of weightlessness under the action of the pneumatic balance cylinder 3, the force of the push-pull cylinder 7 pushing the rotating plate 2 will be fully transmitted to the workpiece through the axial sliding force testing device 8, causing one end of the workpiece to rotate synchronously. During this process, the tension and pressure sensors on the push-pull cylinder 7 will detect and record the angular sliding force of the workpiece, thus completing the detection of the angular sliding force of the workpiece.

[0055] At this point, the comprehensive performance test bench for the automotive steering column adjustment structure has completed the performance testing of all workpieces. After the workpieces are disassembled, the comprehensive performance test bench can enter the next work cycle.

[0056] This comprehensive performance testing bench for automotive steering column adjustment structures is compact and ingeniously designed. It can test various performance characteristics under simulated real vehicle conditions. Furthermore, the testing positions of each testing component of the comprehensive performance testing bench can be changed according to the different models of the test workpieces. This solves the problems of incomplete functions, narrow applicability, and insufficient testing accuracy of existing automotive steering column comprehensive performance testing devices, making it particularly suitable for the comprehensive performance testing needs of automotive steering column adjustment structures.

Claims

1. A comprehensive performance testing bench for an automotive steering column adjustment structure, comprising a frame (1), an assembly clamp (11), a push-pull cylinder (7), a pneumatic balance cylinder (3), an axial sliding force testing device (8), and a handle opening force testing device (9); characterized in that: A rotating plate (2) is provided on the frame (1); one end of the rotating plate (2) is hinged to the frame (1); a pneumatic balance cylinder (3) is hinged to the frame (1) below the other end of the rotating plate (2); the output end of the pneumatic balance cylinder (3) is hinged to the rotating plate (2); a lifting platform (5) is slidably mounted on the frame (1) on one side of the pneumatic balance cylinder (3) via a bracket (4) and a slide rail; an adjusting screw (6) is mounted on the bracket (4) inside the lifting platform (5) via a bearing seat; the adjusting screw (6) and the... The lifting platform (5) is connected to the lifting platform (5); a push-pull cylinder (7) is hinged to the lifting platform (5); the push-pull cylinder (7) is hinged to one end of the rotating plate (2) through a tension and pressure sensor; an axial sliding force testing device (8) and a handle opening force testing device (9) are installed in sequence on the rotating plate (2) on one side of the push-pull cylinder (7); an assembly clamp (11) is installed on the frame (1) outside the handle opening force testing device (9) through a support plate (10); the workpiece to be tested is installed on the assembly clamp (11); During operation, the force of the push-pull cylinder (7) pushing the rotating plate (2) is transmitted to the workpiece to be tested through the axial sliding force testing device (8), and drives one end of the workpiece to be tested to rotate synchronously. During this process, the tension and pressure sensors on the push-pull cylinder (7) will detect and record the angular sliding force of the workpiece to be tested, and complete the detection of the angular sliding force of the workpiece to be tested.

2. The comprehensive performance test bench for an automotive steering column adjustment structure according to claim 1, characterized in that: The support plate (10) is provided with two sets of vertical mounting holes (12) symmetrically arranged; the mounting clamp (11) is provided with two sets of horizontal mounting holes (13); the mounting clamp (11) is installed on the support plate (10) through the horizontal mounting holes (13) and the locking bolts (14) in cooperation with the vertical mounting holes (12).

3. The comprehensive performance test bench for an automotive steering column adjustment structure according to claim 2, characterized in that: The handle opening force testing device (9) includes a horizontal sliding block (15), a horizontal lead screw (16), a lifting slide block (17), a vertical lead screw (20), a test motor (18), and a locking fork (19); the horizontal sliding block (15) is slidably mounted on the rotating plate (2) via a guide rail; the horizontal lead screw (16) is mounted on the rotating plate (2) on one side of the horizontal sliding block (15) via a bearing seat; the horizontal lead screw (16) is connected to the horizontal sliding block (15); the lifting slide block (17) is slidably mounted on the horizontal sliding block (15) via a guide rail; the locking fork (19) is mounted on the lifting slide block (17) via the test motor (18) and the swing arm (31); the vertical lead screw (20) is mounted on the horizontal sliding block (15) inside the lifting slide block (17); the vertical lead screw (20) is connected to the lifting slide block (17).

4. The comprehensive performance test bench for an automotive steering column adjustment structure according to claim 3, characterized in that: The axial sliding force testing device (8) includes a transverse sliding plate (21), a longitudinal sliding block (23), a lifting sliding plate (25), an axial cylinder (27), and a clamping plate (29); the transverse sliding plate (21) is slidably mounted on the rotating plate (2) via a guide rail; a control screw (22) is mounted on the rotating plate (2) below the transverse sliding plate (21) via a bearing seat; the control screw (22) is connected to the transverse sliding plate (21); a longitudinal sliding block (23) is slidably mounted on the transverse sliding plate (21) via a guide rail; a transverse sliding plate (21) on one side of the longitudinal sliding block (23) is mounted with... There is a longitudinal lead screw (24); the longitudinal lead screw (24) is connected to the longitudinal slide (23); the longitudinal slide (23) is slidably mounted on the lifting slide (25) via a guide rail; the longitudinal slide (23) inside the lifting slide (25) is mounted on the slide screw (26) via a bearing seat; the slide screw (26) is connected to the lifting slide (25); the lifting slide (25) is mounted on an axial cylinder (27); one end of the axial cylinder (27) is mounted on a clamping plate (29) via a tension and pressure sensor; multiple clamping rings (28) are evenly installed on the circumferential surface of one end of the clamping plate (29).

Images