Inner diameter size detector for automobile inner bearing

Abstract

The invention relates to the technical field of automobile inner bearing detection, and discloses an automobile inner bearing inner diameter size detector, which comprises a detection table, and further comprises a blanking hopper arranged on the detection table and used for placing an automobile inner bearing; the blanking pipe is arranged on the detection table, is connected to the lower part of the blanking hopper, and is used for conveying the bearing in the automobile for detection; the adjusting mechanism is arranged on the discharging pipe and used for adjusting the width of the discharging pipe and conveying the automobile inner bearings with different diameters; and the rotating mechanism is arranged above the detection table. Through the design of the adjusting mechanism, the width of the blanking pipe can be adjusted according to different diameters of the automobile inner bearing, and meanwhile, the distance between the blanking pipe and the supporting table can be adjusted through linkage of a screw rod and a gear box, so that it is ensured that the circle center of the automobile inner bearing is concentric with the detection mechanism; the precise adaptation function can effectively avoid detection errors caused by bearing size differences, and the detection precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile inner bearing detection, in particular to an automobile inner bearing inner diameter size detector. Background Art

[0002] In the automotive manufacturing and maintenance industries, the inner diameter of automotive bearings is a key factor affecting their performance and service life. Accurately measuring bearing inner diameters is crucial to ensuring the quality and safety of automotive parts. However, existing bearing inner diameter inspection methods and equipment have numerous shortcomings and are unable to meet the modern automotive industry's requirements for accuracy, efficiency, and reliability.

[0003] Traditional bearing inner diameter detection methods mainly include manual measurement and simple mechanical measuring tools such as calipers and micrometers. Although these methods are low-cost, they have the following problems: Manual measurement is easily affected by human factors, such as the operator's skill level and measurement angle, resulting in poor repeatability and accuracy of measurement results. Manual measurement also requires testing bearings one by one, making it impossible to achieve rapid batch testing and difficult to meet the needs of large-scale production. In recent years, with the development of technology, some automated testing equipment has gradually been applied to bearing inner diameter detection. However, these devices still have the following problems: Existing automated testing equipment is typically only capable of inspecting bearings of specific sizes and cannot accommodate bearings of varying diameters. Testing bearings of varying sizes often requires replacing equipment or performing complex adjustments, increasing testing costs and time. Therefore, an automotive bearing inner diameter size detector was proposed to address this issue. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an inner diameter size detector for automobile inner bearings in view of the above-mentioned deficiencies in the prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: an automobile inner bearing inner diameter size detector, including a detection platform, and also including: A lower hopper is provided on the inspection platform and is used for placing bearings inside automobiles; A discharge pipe is provided on the inspection platform and connected below the discharge hopper, and is used to transport bearings inside automobiles for inspection; An adjusting mechanism is provided on the discharge pipe and is used to adjust the width of the discharge pipe for conveying bearings of different diameters in automobiles; A rotating mechanism is provided above the testing platform and is used to rotate the inner bearing of the automobile to be tested; A detection mechanism, provided on the adjustment mechanism, for detecting the inner diameter of the bearing in the automobile; Wherein, the feeding pipe comprises: A first discharge plate is fixedly connected to the bottom of the discharge hopper; The second unloading plate is movably connected to the bottom of the unloading hopper and cooperates with the first unloading plate to transport bearings inside the automobile; The regulatory bodies include: Two adjustment blocks are fixedly connected to the front and back of the blanking plate 2 respectively; The front of the blanking plate 1 is fixedly connected to a gear box, and the back of the blanking plate 1 is fixedly connected to an adjustment block; The adjusting screw has one end that is rotatably connected to the outer wall of the gear box, and the other end that is threaded through the adjusting block on the right side, used to drive the adjusting block to move; The round rod has one end fixedly connected to the left adjusting block on the back, and the other end movably passes through the right adjusting block on the back.

[0006] Preferably, the first blanking plate and the second blanking plate are bent to cushion the impact force when blanking the bearing inside the car; The cross sections of the blanking plate 1 and the blanking plate 2 are U-shaped, and the inner bearing of the automobile rolls between the blanking plate 1 and the blanking plate 2.

[0007] Preferably, the front and back sides of the blanking plate one and blanking plate two are respectively fixedly connected with fixed blocks, and the two fixed blocks on the left are respectively fixedly connected with sliding rods, and one end of the sliding rod is movable through the two fixed blocks on the right, so as to further improve the stable movement of blanking plate two.

[0008] Preferably, the adjustment mechanism further comprises: A plurality of fixed columns, fixedly connected above the detection platform; A plurality of support columns are fixedly connected to the bottom of the adjustment block and the gear box respectively; A plurality of limiting sliding columns are respectively fixedly connected to the bottom of the supporting column, and the outer wall of the supporting column is slidably connected to the inner wall of the fixed column; The screw is threadedly connected to the fixed column below the gear box. The upper part of the screw moves through the support column and is rotatably connected to the outer wall of the gear box through a bearing. IE, the top of the screw moves through the gear box and is connected to the adjusting screw through the gear box.

[0009] Preferably, the rotating mechanism includes: A support platform is provided on the top of the testing platform and located at the bottom of the blanking plate 1 and the blanking plate 2, and is used to support the bearing inside the automobile; The motor is installed on the front side of the support platform, and the interior of the support platform is rotatably connected to a rubber roller, which is connected to the output end of the motor.

[0010] Preferably, the front and back sides of the support platform are fixedly connected with push blocks, the outer wall of the left fixed column is fixedly connected with a cylinder, and the output end of the cylinder is connected to the push block, which is used to push the support platform to move on the detection platform; The rubber roller protrudes outward from the support platform and contacts the inner bearing of the automobile, so as to drive the inner bearing of the automobile to rotate.

[0011] Preferably, a limiting mechanism is provided in the discharge pipe; The limiting mechanism includes: Two movable holes are respectively opened on the blanking plate 1 and the blanking plate 2; Two limiting rods are respectively arranged in the movable holes for movement; Two connecting rods are respectively connected between the limit rod and the support platform, and are used to move with the support platform and extend into the inside of the discharge pipe to block the bearing inside the car; A plurality of brush plates are respectively installed on the U-shaped inner sides of the blanking plate 1 and the blanking plate 2, and are used to brush away dust attached to the bearings inside the car.

[0012] Preferably, the detection mechanism includes: A mounting base, fixedly connected to the front of the left support column; The threaded rod and the cylindrical rod are both mounted on the inner wall of the mounting seat; A U-shaped movable plate is respectively slidably connected to the outer wall of the cylindrical rod and threadedly connected to the outer wall of the threaded rod; Two connecting columns, respectively fixedly connected to the U-shaped movable plate; A laser rangefinder is fixedly connected to the end of the connecting column away from the U-shaped movable plate and is used to measure the inner diameter of the bearing inside the car; A controller is installed above the detection platform and is used to control the detection instrument.

[0013] The present invention adopts the above technical solution, which can bring the following beneficial effects: 1. This automotive bearing inner diameter size detector, through the design of the adjustment mechanism, can adjust the width of the feed tube according to the different diameters of the automotive bearings. At the same time, the distance between the feed tube and the support platform can be adjusted through the linkage of the screw and gearbox to ensure that the center of the automotive bearing is concentric with the detection mechanism. This precise adaptation function can effectively avoid detection errors caused by bearing size differences and improve detection accuracy.

[0014] 2. This automotive bearing inner diameter size detector uses a laser rangefinder to detect different axial positions of the bearing. A rotary mechanism rotates the bearing, changing its circumferential position for multiple tests. This comprehensive testing method captures more data points, more accurately reflecting the actual bearing inner diameter size and further improving the reliability of the test results.

[0015] 3. The entire inspection process of this automotive bearing inner diameter size detector is automatically controlled by a controller. From adjusting the width of the feed tube, moving the feed tube downward, advancing the laser rangefinder for inspection, to rotating the automotive bearings and finally sorting, no excessive human intervention is required. Automated operation not only reduces the tediousness of manual operation, but also greatly improves inspection efficiency, enabling rapid completion of a large number of automotive bearing inspection tasks. Furthermore, through the linkage mechanism of the limit mechanism and the support platform, the next bearing can be automatically inspected after inspecting one bearing. Furthermore, through the telescopic action of the limit rod, chaotic rolling of the bearings during the inspection process is effectively avoided, ensuring the smoothness and continuity of the inspection process, realizing cyclic inspection, and further improving inspection efficiency.

[0016] 4. The inner diameter size detector of automobile bearings can remove dust and other impurities attached to the inner wall of the bearings by setting a brush plate to brush the inner wall of the bearings. If these impurities are not removed, they may interfere with the detection signal of the laser rangefinder, resulting in inaccurate detection results. The cleaning function can effectively reduce the impact of impurities on the detection, thereby improving the reliability of the detection results. After the detection is completed, according to the test results, the control system determines and controls the cylinder to move the support table, and the automobile bearings that meet the standards and the bearings that do not meet the standards are respectively placed in different receiving intervals. This automatic sorting function can screen out unqualified products in time to ensure product quality, while avoiding the misjudgment that may occur in manual sorting, further enhancing the reliability of the test results and the ability to control product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the back structure of the present invention; Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram; Figure 4 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 5 Schematic diagram of the structure of the regulator mechanism of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle; Figure 7 For the present invention Figure 5 Enlarged structural diagram at point C in the middle.

[0018] In the figure: 1. Testing platform; 2. Feed hopper; 3. Feed pipe; 31. Feed plate 1; 32. Feed plate 2; 4. Adjusting mechanism; 41. Adjusting block; 42. Gear box; 43. Adjusting screw; 44. Fixing block; 45. Slide rod; 46. Support column; 47. Fixing column; 48. Limiting slide column; 49. Screw; 5. Limiting mechanism; 51. Limiting rod; 52. Movable hole; 53. Connecting rod; 54. Brush plate; 6. Rotating mechanism; 61. Support platform; 62. Motor; 63. Rubber roller; 64. Push block; 65. Cylinder; 7. Testing mechanism; 71. Mounting seat; 72. Threaded rod; 73. Columnar rod; 74. U-shaped movable plate; 75. Connecting column; 76. Laser rangefinder; 8. Controller DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-7 One embodiment of the present invention is: an automobile inner bearing inner diameter size detector, including a detection platform 1, and also including: The lower hopper 2 is provided on the testing platform 1 and is used to place the inner bearing of the automobile; The discharge pipe 3 is provided on the testing platform 1 and connected to the bottom of the discharge hopper 2, and is used to transport the bearings inside the automobile for testing; The adjusting mechanism 4 is provided on the feeding pipe 3 and is used to adjust the width of the feeding pipe 3 for conveying bearings of different diameters in automobiles; The rotating mechanism 6 is arranged above the testing platform 1 and is used to rotate the inner bearing of the automobile to be tested; The detection mechanism 7 is provided on the adjustment mechanism 4 and is used to detect the inner diameter of the bearing in the automobile; Among them, the feeding pipe 3 includes: A blanking plate 31 is fixedly connected to the bottom of the blanking hopper 2; The second blanking plate 32 is movably connected to the bottom of the blanking hopper 2 and cooperates with the first blanking plate 31 to transport the bearings inside the automobile; The regulating mechanism 4 comprises: Two adjustment blocks 41 are fixedly connected to the front and back of the second blanking plate 32; The front of the blanking plate 31 is fixedly connected to a gear box 42, and the back of the blanking plate 31 is fixedly connected to an adjustment block 41; An adjusting screw 43 has one end rotatably connected to the outer wall of the gear box 42 and the other end threadedly penetrates the adjusting block 41 on the right side, for driving the adjusting block 41 to move; One end of the round rod is fixedly connected to the left adjustment block 41 on the back, and the other end movably passes through the right adjustment block 41 on the back.

[0021] The first blanking plate 31 and the second blanking plate 32 are bent to cushion the impact force when blanking the bearing inside the car; The cross-sections of the blanking plate 1 31 and the blanking plate 2 32 are U-shaped, and the inner bearing of the automobile rolls between the blanking plate 1 31 and the blanking plate 2 32 .

[0022] The front and back sides of blanking plate 1 31 and blanking plate 2 32 are respectively fixedly connected with fixed blocks 44, and the two left fixed blocks 44 are respectively fixedly connected with sliding rods 45, and one end of the sliding rod 45 is movable through the two right fixed blocks 44 to further improve the stable movement of blanking plate 2 32.

[0023] The regulating mechanism 4 further comprises: A plurality of fixed columns 47 are fixedly connected above the detection platform 1; A plurality of support columns 46 are fixedly connected to the bottom of the adjustment block 41 and the gear box 42 respectively; A plurality of limiting sliding posts 48 are fixedly connected to the bottom of the support posts 46, and the outer wall of the support post 46 is slidably connected to the inner wall of the fixed post 47; The screw 49 is threadedly connected to the fixed column 47 located below the gear box 42. The upper part of the screw 49 moves through the support column 46 and is rotatably connected to the outer wall of the gear box 42 through a bearing. The top of the IE screw 49 moves through the gear box 42 and is connected to the adjusting screw 43 through the gear box 42.

[0024] The rotating mechanism 6 comprises: The support platform 61 is provided on the top of the testing platform 1 and is located at the bottom of the blanking plate 1 31 and the blanking plate 2 32, and is used to support the bearing inside the automobile; The motor 62 is mounted on the front of the support platform 61 , and a rubber roller 63 is rotatably connected inside the support platform 61 , and the rubber roller 63 is connected to the output end of the motor 62 .

[0025] The front and back of the support platform 61 are fixedly connected to push blocks 64, and the outer wall of the left fixed column 47 is fixedly connected to a cylinder 65, and the output end of the cylinder 65 is connected to the push block 64, which is used to push the support platform 61 to move on the inspection platform 1; The rubber roller 63 protrudes outward from the support platform 61 and contacts the inner bearing of the automobile to drive the inner bearing of the automobile to rotate.

[0026] A limiting mechanism 5 is provided in the feeding pipe 3; The limiting mechanism 5 includes: Two movable holes 52 are respectively provided on the blanking plate 1 31 and the blanking plate 2 32; Two limiting rods 51 are respectively arranged to move in the movable holes 52; Two connecting rods 53 are respectively connected between the limiting rod 51 and the support platform 61, and are used to move with the support platform 61 and extend into the interior of the discharge pipe 3 to block the bearing inside the car; A plurality of brush plates 54 are respectively mounted on the U-shaped inner sides of the blanking plate 1 31 and the blanking plate 2 32 to brush away dust attached to the bearings inside the automobile.

[0027] The detection mechanism 7 includes: A mounting base 71 is fixedly connected to the front face of the left support column 46; The threaded rod 72 and the cylindrical rod 73 are both mounted on the inner wall of the mounting seat 71; A U-shaped movable plate 74 is slidably connected to the outer wall of the cylindrical rod 73 and threadedly connected to the outer wall of the threaded rod 72; Two connecting columns 75 are fixedly connected to the U-shaped movable plate 74; A laser rangefinder 76 is fixedly connected to the end of the connecting column 75 away from the U-shaped movable plate 74 and is used to measure the inner diameter of the bearing in the car; The controller 8 is installed above the testing platform 1 and is used to control the testing instrument.

[0028] Working principle: When testing the inner diameter of an automobile bearing, multiple automobile bearings to be tested are placed in the discharge hopper 2. Then, according to the diameter of the automobile bearing to be tested, the adjusting screw 43 is rotated. At this time, under the limiting effect of the round rod, the adjusting block 41 on the right side is driven to move, thereby pushing the second discharge plate 32 to move toward the first discharge plate 31, thereby adjusting the spacing between the discharge pipes 3 to adapt to the diameter of the automobile bearing to be tested, thereby improving the stability during testing; At the same time, when the adjusting screw 43 rotates, the screw 49 is also driven to rotate through the gear box 42. At this time, the rotation of the screw 49 and the action of the limit slide 48 drive the support column 46 to slide downward, thereby pushing the entire discharge tube 3 downward, thereby changing the distance from the support platform 61 to ensure that the support platform 61 and the discharge tube 3 can still stably support the bearing inside the automobile, and keep the center of the bearing inside the automobile concentric with the detection mechanism 7, so as to facilitate accurate detection; Furthermore, the controller 8 starts the rotation of the motor mounted on the mounting base 71, which drives the threaded rod 72 to rotate. At this time, under the limit of the cylindrical rod 73, the U-shaped movable plate 74 can be pushed toward the inner bearing of the vehicle, and the laser rangefinder 76 on the connecting column 75 can be pushed into the interior of the inner bearing of the vehicle to detect and measure the distance at different axial positions of the inner bearing of the vehicle; Furthermore, the controller 8 starts the rotation of the motor mounted on the support platform 61, thereby driving the rubber roller 63 to rotate, thereby driving the inner bearing of the car in contact with the rubber roller 63 to rotate, thereby changing the circumferential position of the inner bearing of the car, and being detected by the laser rangefinder 76, changing the detection range and different detection positions, thereby improving the detection effect. At the same time, when the inner bearing of the car rotates, it will also come into contact with the bristles on the brush plate 54, thereby brushing the inner wall of the inner bearing of the car, removing the influence of dust on the detection, and improving the accuracy of the detection result. After the test is completed, according to the judgment of the background control system, the bearings that meet the standards will fall to the right side of the support platform 61, and those that do not meet the standards will fall to the left side of the support platform 61; At this time, when the system determines, it will control the cylinder to push to the right or left, thereby pushing the push block 64 to move, and at this time, the support platform 61 will be pushed up, and the inner bearing of the car located on the support platform 61 will be pushed up. When the support platform 61 intersects with the discharge pipe 3, it will no longer support the inner bearing of the car. At this time, under the action of gravity, the inner bearing of the car will roll along the inclined surface of the support platform 61 and fall into the corresponding receiving area. At the same time, when the support platform 61 moves, the connecting rods 53 on both sides will be pushed to move synchronously. At this time, the limiting rods 51 on both sides will be driven to extend into and slide out of the movable holes respectively, thereby limiting the upper automobile inner bearing that is lifted up, and preventing the lower automobile inner bearing from rolling away and the upper automobile inner bearing from rolling down directly, thereby affecting the detection. Only when the support platform 61 is reset, the two limiting rods 51 will no longer block the automobile inner bearing, thereby realizing cyclic detection.

[0029] The present invention provides an instrument for measuring the inner diameter of an automotive bearing. Numerous methods and approaches exist for implementing this technical solution. The foregoing merely illustrates a preferred embodiment of the present invention. It should be noted that those skilled in the art may make improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Components not specified in this embodiment may be implemented using existing technologies.

Claims

1. An automobile inner bearing inner diameter size detector, comprising a detection table (1), characterized in that: Also includes: A lower hopper (2) is provided on the inspection platform (1) and is used for placing bearings inside automobiles; A discharge pipe (3) is provided on the inspection platform (1) and is connected to the bottom of the discharge hopper (2) for conveying bearings inside automobiles for inspection; An adjusting mechanism (4) is provided on the discharge pipe (3) and is used to adjust the width of the discharge pipe (3) for conveying bearings in automobiles of different diameters; A rotating mechanism (6) is arranged above the testing platform (1) and is used to rotate the inner bearing of the automobile to be tested; A detection mechanism (7), provided on the adjustment mechanism (4), for detecting the inner diameter of the bearing in the automobile; Wherein, the feeding pipe (3) comprises: A first discharge plate (31) is fixedly connected to the bottom of the discharge hopper (2); The second unloading plate (32) is movably connected to the bottom of the unloading hopper (2) and cooperates with the first unloading plate (31) to transport bearings in automobiles; The regulating mechanism (4) comprises: Two adjustment blocks (41) are fixedly connected to the front and back of the blanking plate 2 (32); The front of the blanking plate (31) is fixedly connected to a gear box (42), and the back of the blanking plate (31) is fixedly connected to an adjustment block (41); An adjusting screw (43) having one end rotatably connected to the outer wall of the gear box (42) and the other end threadedly penetrating the adjusting block (41) on the right side for driving the adjusting block (41) to move; A round rod, one end of which is fixedly connected to the left side adjustment block (41) on the back, and the other end of which is movable through the right side adjustment block (41) on the back.

2. The inner diameter dimension detector of an automobile bearing according to claim 1, characterized in that: The blanking plate 1 (31) and the blanking plate 2 (32) are bent and configured to cushion the impact force when blanking the bearing inside the automobile; The cross-sections of the blanking plate 1 (31) and the blanking plate 2 (32) are U-shaped, and the inner bearing of the automobile rolls between the blanking plate 1 (31) and the blanking plate 2 (32).

3. The inner diameter dimension detector of an automobile bearing according to claim 2, characterized in that: The front and back surfaces of the blanking plate 1 (31) and the blanking plate 2 (32) are respectively fixedly connected with fixed blocks (44), and the two left fixed blocks (44) are respectively fixedly connected with sliding rods (45), and one end of the sliding rod (45) is movable through the two right fixed blocks (44) to further improve the stable movement of the blanking plate 2 (32).

4. The inner diameter dimension detector for an automobile bearing according to claim 3, characterized in that: The regulating mechanism (4) further comprises: A plurality of fixed columns (47) fixedly connected above the detection platform (1); A plurality of support columns (46) are respectively fixedly connected to the bottom of the adjustment block (41) and the gear box (42); A plurality of limiting sliding columns (48) are respectively fixedly connected to the bottom of the support column (46), and the outer wall of the support column (46) is slidably connected to the inner wall of the fixed column (47); The screw rod (49) is threadedly connected to the fixed column (47) located below the gear box (42). The upper part of the screw rod (49) is movable through the support column (46) and is rotatably connected to the outer wall of the gear box (42) through a bearing. In other words, the top part of the screw rod (49) is movable through the gear box (42) and is transmission-connected to the adjusting screw rod (43) through the gear box (42).

5. The automobile inner bearing inner diameter size detector according to claim 4, characterized in that: The rotating mechanism (6) comprises: A support platform (61) is provided on the top of the inspection platform (1) and is located at the bottom of the blanking plate 1 (31) and the blanking plate 2 (32), and is used to support the bearing inside the automobile; The motor (62) is mounted on the front of the support platform (61), and the interior of the support platform (61) is rotatably connected to a rubber roller (63), which is connected to the output end of the motor (62).

6. The automobile inner bearing inner diameter size detector according to claim 5, characterized in that: The front and back sides of the support platform (61) are fixedly connected to push blocks (64), the outer wall of the left fixed column (47) is fixedly connected to a cylinder (65), and the output end of the cylinder (65) is connected to the push block (64) for pushing the support platform (61) to move on the inspection platform (1); The rubber roller (63) protrudes outward from the support platform (61) and contacts the inner bearing of the automobile, and is used to drive the inner bearing of the automobile to rotate.

7. The automobile inner bearing inner diameter size detector according to claim 6, characterized in that: A limiting mechanism (5) is provided in the discharge pipe (3); The limiting mechanism (5) comprises: Two movable holes (52) are respectively provided on the blanking plate 1 (31) and the blanking plate 2 (32); Two limiting rods (51) are respectively arranged to move in the movable holes (52); Two connecting rods (53) are respectively connected between the limiting rod (51) and the supporting platform (61), and are used to move along with the supporting platform (61) to extend into the interior of the feeding pipe (3) to block the bearing inside the automobile; A plurality of brush plates (54) are respectively mounted on the U-shaped inner sides of the first blanking plate (31) and the second blanking plate (32) for brushing away dust attached to the inner bearing of the automobile.

8. The automobile inner bearing inner diameter size detector according to claim 7, characterized in that: The detection mechanism (7) comprises: A mounting base (71) is fixedly connected to the front side of the left support column (46); A threaded rod (72) and a cylindrical rod (73) are both mounted on the inner wall of the mounting seat (71); A U-shaped movable plate (74) is slidably connected to the outer wall of the cylindrical rod (73) and is threadedly connected to the outer wall of the threaded rod (72); Two connecting columns (75) are respectively fixedly connected to the U-shaped movable plate (74); A laser rangefinder (76) is fixedly connected to one end of the connecting column (75) away from the U-shaped movable plate (74) and is used to measure the inner diameter of the bearing in the automobile; A controller (8) is installed above the detection platform (1) and is used to control the detector.

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