Automobile steering shaft concentricity detector

Abstract

The utility model relates to a concentricity detector, belongs to the technical field of concentricity detectors, and particularly relates to an automobile steering shaft concentricity detector which comprises a detection table, two pairs of fixing plates and L-shaped supporting rods are fixedly mounted on the surface of the detection table, and a pair of mounting frames is fixedly mounted in the middle of the detection table. A rotating shaft is rotationally mounted between each pair of fixing plates, the rotating shafts rotationally penetrate through the mounting frame, and a sliding groove I and a sliding groove II are formed in the surface of the detection table. According to the utility model, an effect of efficiently and accurately detecting the steering shaft is achieved, and the problems that in the prior art, an arranged detection device is used for detection, but cannot be adjusted, steering shafts with different specifications and sizes cannot be well detected, and only a single concentricity detector is used for detection, so that the practicability is poor, and the detection efficiency is high are solved. Meanwhile, the detection efficiency is also low.

Description

Technical Field

[0001] This utility model relates to the technical field of concentricity testing instruments, and in particular to a concentricity testing instrument for automotive steering shafts. Background Technology

[0002] Concentricity is an important technical indicator for measuring circular or cylindrical workpieces. It describes the degree of deviation of the measured element (such as the center of a circle, the axis of a hole or shaft) from the reference axis. It is directly related to the smooth operation of the equipment. The concentricity tester for steering shafts is a precision instrument used to measure and inspect the concentricity of the axis in rotating equipment.

[0003] A search revealed Chinese patent CN218034839U, which discloses an automotive steering shaft concentricity testing instrument, including a support box. The support box has a platform inside its cavity. A motor is fixedly connected to the left side of the top of the platform. The output end of the motor is connected to a gear. A pull plate meshes with the top of the gear. A first support plate is fixedly connected to the top of the pull plate. Damping rods are fixedly connected to all four sides of the bottom of the support box cavity. The top of the damping rods is fixedly connected to the platform.

[0004] Based on the above search results combined with existing technologies;

[0005] The aforementioned patent utilizes a detection device for testing, but it is not adjustable and cannot effectively test steering shafts of different sizes. Furthermore, it relies solely on a single concentricity tester, resulting in poor practicality and low testing efficiency, thus presenting certain limitations. Utility Model Content

[0006] To address the aforementioned technical problems, this invention proposes an automotive steering shaft concentricity testing instrument. This device enables multi-directional testing of the steering shaft, improving testing quality and efficiency.

[0007] The technical solution to achieve the purpose of this utility model is as follows: a car steering shaft concentricity tester, including a test platform, two pairs of fixed plates and an L-shaped support rod are fixedly installed on the surface of the test platform, a pair of mounting frames are fixedly installed in the middle of the test platform, a rotating shaft is rotatably installed between each pair of fixed plates, the rotating shaft rotates through the mounting frame, a sliding groove one and a sliding groove two are opened on the surface of the test platform, and a test component is also included.

[0008] The detection assembly includes an adjustment slider and a cross slider that are slidably mounted on the surface of the detection stage.

[0009] Preferably, slide rail 1 and slide rail 2 are rotatably installed inside slide groove 1 and slide rail 2 respectively, the adjusting slider and the cross slider are slidably engaged with slide rail 2 and slide rail 1 respectively, and the adjusting threaded rod is rotatably installed inside the cross slider.

[0010] Preferably, a universal adjusting rod is fixedly installed on the surface of the adjusting slider, and a moving block is connected to the adjusting threaded rod by a thread. A universal ball head damping shaft is fixedly installed at one end of both the universal adjusting rod and the moving block, and a concentricity detector is fixedly installed on one side of each universal ball head damping shaft.

[0011] Preferably, the end of the adjusting slider is connected to a pair of fixing bolts by a thread, the end of the adjusting threaded rod is fixedly installed with a rotating handle, and a sliding groove adapted to the moving block is opened on one side of the cross slider.

[0012] Preferably, a pair of electric telescopic rods are fixedly installed on the surface of the testing platform, the fixed ends of the electric telescopic rods are fixedly inserted through the fixed plate, and the telescopic ends of the pair of electric telescopic rods are fixedly connected to the cross slider.

[0013] Preferably, a pair of rotating wheels are fixedly installed in the middle of each of the rotating shafts, and a slow motor is fixedly installed on one side of one of the fixed plates, with the output shaft of the slow motor being fixedly connected to the end of one of the rotating shafts.

[0014] Preferably, a pair of adjusting wheels are movably mounted on each of the rotating shafts, and a connecting rod is rotatably mounted on one side of each pair of adjusting wheels. A damping slider is fixedly mounted at the bottom of the connecting rod, and the damping slider is in sliding engagement with the slide rail.

[0015] Preferably, an elastic telescopic rod is fixedly installed at the bottom of one end of the L-shaped support rod, a support plate is fixedly installed at the telescopic end of the elastic telescopic rod, and pressure rollers are rotatably installed on both sides of the support plate.

[0016] Compared with existing technologies, the significant advantages of this invention are:

[0017] Firstly, this utility model utilizes a cross-shaped slider and an adjusting threaded rod to achieve end-mounted detection, thereby enabling the detection of the concentricity of the steering shaft end. The adjusting slider, along with a universal adjusting rod, allows for adjustment of a pair of concentricity detectors at the end, facilitating adjustments based on different steering shaft sizes and specifications. This improves the practicality and efficiency of the detection device. Furthermore, a rotating shaft and a rotating wheel, powered by a slow-speed motor, facilitate the detection component's operation. The adjusting wheel can be adjusted according to the length of different steering shafts, ensuring the stability of the steering shaft detection installation.

[0018] Secondly, this utility model can achieve a fixed effect on the inspection and installation of the steering shaft through the pressure roller, without hindering its normal rotation. Furthermore, the elastic telescopic rod can ensure that the support plate and pressure roller can still stably press the steering shaft of different specifications, ensuring the smooth progress of the inspection process and improving the accuracy of the inspection.

[0019] This invention solves the problems of existing technologies that use a set detection device for detection, but which cannot be adjusted and cannot effectively detect steering shafts of different sizes. Furthermore, the use of only a single concentricity detector results in poor practicality and low detection efficiency. Attached Figure Description

[0020] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the overall first-view structure provided by this utility model;

[0022] Figure 2 This is a schematic diagram of the overall and partial cross-sectional structure provided by this utility model;

[0023] Figure 3 This is a schematic diagram of the detection component structure provided by this utility model;

[0024] Figure 4 This is a schematic diagram of the cross slider structure provided by this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Testing table; 2. Fixing plate; 3. L-shaped support rod; 4. Elastic telescopic rod; 5. Support plate; 6. Pressure roller; 7. Rotating shaft; 8. Slow-speed motor; 9. Rotating wheel; 10. Slide rail one; 11. Adjusting wheel; 12. Cross slider; 13. Connecting rod; 14. Damping slider; 15. Electric telescopic rod; 16. Adjusting threaded rod; 17. Mounting bracket; 18. Slide groove one; 19. Slide groove two; 20. Slide rail two; 21. Adjusting slider; 22. Fixing bolt; 23. Universal adjusting rod; 24. Universal ball head damping rotating shaft; 25. Concentricity tester; 26. Moving block; 27. Rotating handle. Detailed Implementation

[0027] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0028] This utility model provides an improved automotive steering shaft concentricity testing instrument. The technical solution of this utility model is as follows:

[0029] like Figures 1-4 As shown, an automotive steering shaft concentricity tester includes a test platform 1. Two pairs of fixed plates 2 and L-shaped support rods 3 are fixedly mounted on the surface of the test platform 1. A pair of mounting brackets 17 are fixedly mounted in the middle of the test platform 1. A rotating shaft 7 is rotatably mounted between each pair of fixed plates 2. The rotating shaft 7 rotates through the mounting bracket 17. The surface of the test platform 1 is provided with a first sliding groove 18 and a second sliding groove 19. The tester also includes a test assembly. The rotating shaft 7 and L-shaped support rods 3 ensure that the steering shaft can be stably placed on the surface of the test platform 1, thereby facilitating the test assembly to test the steering shaft.

[0030] The detection assembly includes an adjustment slider 21 and a cross slider 12 that are slidably mounted on the surface of the detection table 1. The adjustment slider 21 and the cross slider 12 enable multi-directional adjustment of the detection component, thereby ensuring that the detection assembly can detect steering shafts of different sizes and improving the practicality of the detection device.

[0031] Furthermore, slide rail 10 and slide rail 20 are rotatably installed inside slide groove 18 and slide rail 29 respectively. Adjusting slider 21 and cross slider 12 slide in cooperation with slide rail 20 and slide rail 10 respectively. Adjusting threaded rod 16 is rotatably installed inside cross slider 12. The slide groove 18 and slide rail 29 facilitate the sliding of adjusting slider 21 and cross slider 12. The slide rail 10 and slide rail 20 provide support for the movement of adjusting slider 21 and cross slider 12.

[0032] Furthermore, a universal adjusting rod 23 is fixedly installed on the surface of the adjusting slider 21, and a moving block 26 is threadedly connected to the adjusting threaded rod 16. A universal ball head damping shaft 24 is fixedly installed at one end of both the universal adjusting rod 23 and the moving block 26. A concentricity detector 25 is fixedly installed on one side of each universal ball head damping shaft 24. By using the universal adjusting rod 23 and the adjusting threaded rod 16, different angles of the detection component can be adjusted, thereby ensuring that steering shafts of different specifications can be detected. The universal ball head damping shaft 24 can be used to achieve stable adjustment of the concentricity detector 25. The working principle of the concentricity detector 25 is as follows: when the outer circumference of the steering shaft is pressed against the apex, the measuring object is rotated, and the maximum and minimum reading values ​​of the concentricity detector 25 are measured on a specified circumference. The maximum difference between these values ​​is taken as the concentricity.

[0033] Furthermore, the end of the adjusting slider 21 is connected to a pair of fixing bolts 22 by thread, and the end of the adjusting threaded rod 16 is fixedly installed with a rotating handle 27. A sliding groove adapted to the moving block 26 is opened on one side of the cross slider 12. The fixing bolts 22 can stably fix the adjusting slider 21 on the surface of the testing table 1, thereby preventing the concentricity tester 25 from shaking during testing, resulting in inaccurate test results. The rotating handle 27 facilitates the rotation of the adjusting threaded rod 16 to achieve the vertical adjustment of the moving block 26.

[0034] Furthermore, a pair of electric telescopic rods 15 are fixedly installed on the surface of the testing table 1. The fixed ends of the electric telescopic rods 15 are fixedly inserted through the fixed plate 2. The telescopic ends of the pair of electric telescopic rods 15 are fixedly connected to the cross slider 12. The electric telescopic rods 15 can move the cross slider 12, thereby adjusting according to different steering shaft lengths, thus improving the practicality of the testing device.

[0035] As a further embodiment of this utility model, a pair of rotating wheels 9 are fixedly installed in the middle of each rotating shaft 7, and a slow motor 8 is fixedly installed on one side of one of the fixed plates 2. The output shaft of the slow motor 8 is fixedly connected to the end of one of the rotating shafts 7. The slow motor 8 can drive the rotating shaft 7 to rotate stably, and the rotating wheel 9 can drive the steering shaft to rotate stably, thereby facilitating the stable detection of the detection component.

[0036] Furthermore, a pair of adjusting wheels 11 are movably mounted on each rotating shaft 7. A connecting rod 13 is rotatably mounted on one side of each pair of adjusting wheels 11. A damping slider 14 is fixedly mounted at the bottom of the connecting rod 13. The damping slider 14 slides in cooperation with the slide rail 10. The adjusting wheels 11 can be adjusted according to different specifications of steering shafts to ensure stable support for the steering shaft.

[0037] Furthermore, an elastic telescopic rod 4 is fixedly installed at the bottom of one end of the L-shaped support rod 3, and a support plate 5 is fixedly installed at the telescopic end of the elastic telescopic rod 4. Pressure rollers 6 are rotatably installed on both sides of the support plate 5. The pressure rollers 6 can be used to achieve the effect of stable fixed support for the steering shaft. The elastic telescopic rod 4 can be used to fix and support steering shafts of different specifications with the pressure rollers 6, thereby improving the stability of the steering shaft during the testing process.

[0038] The specific working method is as follows: First, pull up the pressure roller 6, then place the steering shaft on the testing table 1, release the pressure roller 6, and under the action of the elastic telescopic rod 4, the steering shaft can be stably pressed. Then, the adjusting wheel 11 is moved to ensure that the steering shaft can be stably installed on the testing table 1. After the steering shaft is installed, the electric telescopic rod 15 is controlled to move the cross slider 12, which facilitates the movement of the concentricity detector 25 located at its end. After moving to the appropriate position, the vertical adjustment is achieved by rotating the handle 27. Then, the concentricity detector 25 is stably attached to the surface of the steering shaft to be tested by using the universal ball joint damping shaft 24. Then, by moving the adjusting slider 21 and the universal adjusting rod 23, the pair of concentricity detectors 25 located at their ends can detect different parts of the steering shaft, thereby improving the accuracy of the test results. After the concentricity detector 25 is adjusted, the slow speed motor 8 is started to drive the rotating shaft 7 to rotate stably through the rotating wheel 9, thereby achieving stable, efficient and accurate testing of the steering shaft.

[0039] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A concentricity testing instrument for automotive steering shafts, comprising a testing platform (1), wherein two pairs of fixing plates (2) and L-shaped support rods (3) are fixedly mounted on the surface of the testing platform (1), characterized in that: A pair of mounting brackets (17) are fixedly installed in the middle of the testing table (1), and a rotating shaft (7) is rotatably installed between each pair of fixed plates (2). The rotating shaft (7) rotates through the mounting bracket (17). The surface of the testing table (1) is provided with a sliding groove one (18) and a sliding groove two (19), and also includes; The detection assembly includes an adjustment slider (21) and a cross slider (12) that are slidably mounted on the surface of the detection stage (1).

2. The automotive steering shaft concentricity testing instrument according to claim 1, characterized in that: The slide rails are rotatably mounted inside the slide rails 1 (18) and 2 (19), respectively. The adjusting slider (21) and the cross slider (12) are slidably engaged with the slide rails 2 (20) and 1 (10), respectively. The adjusting threaded rod (16) is rotatably mounted inside the cross slider (12).

3. The automotive steering shaft concentricity tester according to claim 2, characterized in that: A universal adjusting rod (23) is fixedly installed on the surface of the adjusting slider (21). A moving block (26) is connected to the adjusting threaded rod (16) by a thread. A universal ball head damping shaft (24) is fixedly installed at one end of both the universal adjusting rod (23) and the moving block (26). A concentricity detector (25) is fixedly installed on one side of each universal ball head damping shaft (24).

4. The automotive steering shaft concentricity testing instrument according to claim 2, characterized in that: The end of the adjusting slider (21) is connected to a pair of fixing bolts (22) by thread, and the end of the adjusting threaded rod (16) is fixedly installed with a rotating handle (27). A sliding groove adapted to the moving block (26) is opened on one side of the cross slider (12).

5. The automotive steering shaft concentricity testing instrument according to claim 1, characterized in that: A pair of electric telescopic rods (15) are fixedly installed on the surface of the testing table (1). The fixed ends of the electric telescopic rods (15) are fixedly inserted through the fixed plate (2). The telescopic ends of the pair of electric telescopic rods (15) are fixedly connected to the cross slider (12).

6. The automotive steering shaft concentricity tester according to claim 1, characterized in that: A pair of rotating wheels (9) are fixedly installed in the middle of each of the rotating shafts (7), and a slow motor (8) is fixedly installed on one side of one of the fixed plates (2), and the output shaft of the slow motor (8) is fixedly connected to the end of one of the rotating shafts (7).

7. The automotive steering shaft concentricity tester according to claim 1, characterized in that: Each of the rotating shafts (7) is movably mounted with a pair of adjusting wheels (11), and a connecting rod (13) is rotatably mounted on one side of each pair of adjusting wheels (11). A damping slider (14) is fixedly mounted at the bottom of the connecting rod (13), and the damping slider (14) slides in cooperation with the slide rail (10).

8. The automotive steering shaft concentricity tester according to claim 1, characterized in that: An elastic telescopic rod (4) is fixedly installed at the bottom of one end of the L-shaped support rod (3), and a support plate (5) is fixedly installed at the telescopic end of the elastic telescopic rod (4). Pressure rollers (6) are rotatably installed on both sides of the support plate (5).

Images