Multi-functional wheel arch gauge

Abstract

The utility model discloses a multifunctional wheel brow detection device belongs to the automobile technical field. It solved the wheel brow detection device in the prior art only can detect the size of wheel brow under static state, cannot detect the problem of the gap surface difference of the front section wheel brow and rear section wheel brow in relative motion. It mainly includes the detection stage, is fixedly installed with fixed reference board on the detection stage, and the detection stage is provided with the rotary reference board at the left side of fixed reference board, and the left end of rotary reference board is rotatably connected with the detection stage, and the front end surface of rotary reference board is equipped with front section wheel brow fixed module, and the front end surface of fixed reference board is equipped with rear section wheel brow fixed module, and the front end surface of rotary reference board is also equipped with front section wheel brow detection module, and the front end surface of fixed reference board is also equipped with rear section wheel brow detection module.

Description

Technical Field

[0001] This utility model belongs to the field of automotive technology, and more specifically, it relates to a multifunctional wheel arch inspection tool. Background Technology

[0002] Currently, many car models have rear wheel arches in two sections: one installed on the rear door and the other fixed to the rear side panel. These two-section wheel arches often result in uneven gaps between the two sections during assembly, significantly impacting the appearance and leading to consumer dissatisfaction with vehicle quality. The causes of this uneven gap involve not only the precision of many individual components but also issues related to the matching of the two rear wheel arch sections and the cumulative effects of assembly tolerances.

[0003] In existing technologies, wheel arches need to be inspected using wheel arch inspection fixtures. Currently, these fixtures are designed for individual components and can only measure dimensions in a static state, failing to assess their dimensional stability when mating with surrounding parts or during movement. This means that when misalignment occurs during assembly, it's impossible to directly analyze which component or assembly process is at fault using individual fixture measurements. Further analysis and troubleshooting require a large amount of accumulated data from actual vehicle assembly, increasing labor, material, and time costs. Summary of the Invention

[0004] The purpose of this invention is to provide a multifunctional wheel arch inspection tool to overcome the problem that existing wheel arch inspection tools can only detect the size of wheel arches in a static state and cannot detect the gap surface difference between the front and rear sections of the rear wheel arch during relative motion.

[0005] This utility model is achieved using the following technical solution: a multifunctional wheel arch inspection tool, including an inspection platform, on which a fixed reference plate is fixedly installed. A rotating reference plate is provided on the left side of the fixed reference plate on the inspection platform. The left end of the rotating reference plate is rotatably connected to the inspection platform. A front wheel arch fixing module is provided on the front end face of the rotating reference plate, and a rear wheel arch fixing module is provided on the front end face of the fixed reference plate. A front wheel arch detection module is also provided on the front end face of the rotating reference plate, and a rear wheel arch detection module is also provided on the front end face of the fixed reference plate.

[0006] Furthermore, the testing platform has a vertical plate installed on the rear side of the rotating reference plate, and the front end face of the vertical plate is rotatably connected to the left end of the rotating reference plate via a rotating shaft.

[0007] Furthermore, the top surface of the testing platform is provided with an arc-shaped sliding groove, and the bottom of the rotating reference plate is equipped with a slider that inserts into the sliding groove. When the slider contacts the right end of the sliding groove, the front end face of the rotating reference plate and the front end face of the fixed reference plate are parallel to each other.

[0008] Furthermore, a connecting plate is installed on the rear end face of the fixed reference plate. One end of the connecting plate near the rotating reference plate extends out of the fixed reference plate, and a reference plate connecting hole is opened on the part of the connecting plate extending out of the fixed reference plate. A reference plate threaded hole that mates with the reference plate connecting hole is opened on the rear end face of the rotating reference plate. The reference plate connecting hole and the reference plate threaded hole are connected by bolts.

[0009] Furthermore, the rear wheel arch fixing module includes a first fixing block and a second fixing block supported by outriggers, and the front wheel arch fixing module includes a second fixing block; the first fixing block has a wheel arch fixing hole for inserting a screw on the wheel arch, and the second fixing block has a clip hole for inserting a buckle on the wheel arch.

[0010] Furthermore, the first fixing block includes an upper plate and a lower plate, which are connected by bolts. The wheel arch fixing hole is opened on the top surface of the upper plate. The upper plate and the lower plate are respectively provided with an upper rotating groove and a lower rotating groove that are interconnected. The wheel arch fixing hole is connected to the upper rotating groove. The lower plate is provided with a lower plate through hole that is connected to the lower rotating groove. A fastening rod passes through the lower plate through hole. The front end face of the fastening rod is provided with a fastening threaded hole. The front end of the fastening rod is inserted into the lower rotating groove and is equipped with a protruding edge.

[0011] Furthermore, the second fixing block includes a base plate fixedly connected to the support leg. Limiting grooves are respectively opened on the front and rear sides of the base plate, and movable blocks are respectively inserted into the limiting grooves on both sides. The tops of the movable blocks on both sides are respectively connected to inwardly extending top plates. Semi-circular holes are respectively opened on the opposite surfaces of the top plates on both sides, and the semi-circular holes on both sides form a locking hole. The movable block on the front side is provided with a locking threaded hole, and a locking screw is inserted into the locking threaded hole. The movable block on the rear side is provided with a locking through hole, and the rear end of the locking screw passes through the locking through hole and is fitted with a stop block.

[0012] Furthermore, both the front wheel arch detection module and the rear wheel arch detection module include a clearance surface difference detection component, which includes an end face detection block supported by a support leg. The rear wheel arch detection module also includes a hole positioning detection component, which includes a first positioning block and a second positioning block, both supported by a support leg. The first positioning block has a first through hole, and a hole positioning rod is slidably installed in the first through hole. The second positioning block has a second through hole, and a scribing pin is slidably installed in the second through hole.

[0013] Furthermore, the front end and rear end of the hole positioning rod are respectively provided with a positioning rod head and a detection head, and a spring is installed between the positioning rod head and the first positioning block; the scribing pin includes a scribing rod, a positioning head is installed in the middle of the front end face of the scribing rod, and a scribing blade is installed on the outside of the positioning head.

[0014] Furthermore, wheels are installed at the bottom of the testing platform.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model adds a rotating reference plate to the existing fixed reference plate. The rotating reference plate can simulate the opening and closing process of the rear door of a car, and thus can effectively detect the gap surface difference between the front and rear wheel arches installed on the rear door during the rotation process.

[0016] 2. This utility model can also separately inspect the dimensions of the two rear wheel arch sections. When it is necessary to inspect the front section of the rear wheel arch separately, we can install end face inspection blocks on the right, bottom, and lower sides of the front wheel arch section using outriggers. The inspection end faces of the multiple end face inspection blocks are respectively set opposite to the inspection surface of the front wheel arch section. By measuring the distance between the inspection end face and the inspection surface of the front wheel arch section, the clearance surface difference of the inspection surface of the front wheel arch section can be determined. When it is necessary to inspect the rear section of the rear wheel arch separately, we can install end face inspection blocks on the left, right, bottom, and lower sides of the rear wheel arch section using outriggers. The inspection end faces of the multiple end face inspection blocks are respectively set opposite to the inspection surface of the rear wheel arch section. By measuring the distance between the inspection end face and the inspection surface of the rear wheel arch section, the clearance surface difference of the inspection surface of the rear wheel arch section can be determined. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 A magnified view of a section at point I; Figure 3 This is a perspective view of the rotating reference plate described in this utility model after it has been rotated by a certain angle; Figure 4 This is a diagram showing the usage state when this utility model simultaneously inspects both the front and rear sections of the rear wheel arch; Figure 5 This is a state diagram used when this utility model is only used to inspect the front section of the rear wheel arch; Figure 6 This is a state diagram used when this utility model is only inspecting the rear section of the rear wheel arch; Figure 7 This is a perspective view of the first fixing block of this utility model; Figure 8 This is a cross-sectional view of the first fixing block of this utility model; Figure 9 This is a perspective view of the second fixing block of this utility model; Figure 10 This is a cross-sectional view of the second fixing block of this utility model; Figure 11This is a perspective view of the first positioning block of this utility model; Figure 12 This is a perspective view of the second positioning block of this utility model.

[0018] In the diagram: 1. Testing platform; 2. Fixed reference plate; 3. Rotating reference plate; 4. Vertical plate; 5. Rotating shaft; 6. Slide groove; 7. Slider; 8. Connecting plate; 9. Reference plate connecting hole; 10. Support leg; 11. First fixing block; 12. Second fixing block; 13. Wheel arch fixing hole; 14. Clip hole; 15. Upper plate; 16. Lower plate; 17. Upper rotating groove; 18. Lower rotating groove; 19. Lower plate through hole; 20. Convex Along; 21. Base plate; 22. Limiting groove; 23. Movable block; 24. Top plate; 25. Locking screw; 26. Stop block; 27. End face detection block; 28. First positioning block; 29. ​​Second positioning block; 30. Hole positioning rod; 31. Scribing pin; 32. Positioning rod head; 33. Detection head; 34. Spring; 35. Positioning head; 36. Scribing tool; 37. Wheel; 38. Fastening rod; 39. Fastening threaded hole. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort should fall within the scope of protection of this utility model.

[0020] A multifunctional wheel arch inspection tool includes an inspection platform 1, on the bottom of which a wheel 37 is installed. By installing the wheel 37, this utility model can be easily moved.

[0021] A fixed reference plate 2 is fixedly installed on the testing platform 1. A rotating reference plate 3 is set on the left side of the fixed reference plate 2 on the testing platform 1. The fixed reference plate 2 and the rotating reference plate 3 are used to fix the rear section of the rear wheel arch and the front section of the rear wheel arch, respectively. The front section of the rear wheel arch is fixed to the rotating reference plate 3 by a front section wheel arch fixing module, and the front section wheel arch is dimensionally inspected by a front section wheel arch inspection module. The rear section of the rear wheel arch is fixed to the fixed reference plate 2 by a rear section wheel arch fixing module, and the rear section wheel arch is dimensionally inspected by a rear section wheel arch inspection module.

[0022] The left end of the rotating reference plate 3 is rotatably connected to the testing platform 1. A vertical plate 4 is mounted on the rear side of the rotating reference plate 3 on the testing platform 1. The front end of the vertical plate 4 is rotatably connected to the left end of the rotating reference plate 3 via a rotating shaft 5. The rotating reference plate 3 can rotate relative to the fixed reference plate 2. The rotation process of the rotating reference plate 3 simulates the opening and closing rotation process of the rear door, thereby measuring the dynamic clearance surface difference between the front section of the rear wheel arch and the rear section of the rear wheel arch during the rotation of the door. The rotating shaft 5 is fixedly installed on the front end face of the vertical plate 4 at a certain distance. The rotating reference plate 3 can be connected to an ear plate, which has a through hole for the rotating shaft 5 to pass through. The rotating reference plate 3 is rotatably connected to the vertical plate via the ear plate and the rotating shaft 5.

[0023] The top surface of the testing platform 1 has an arc-shaped groove 6. A slider 7, inserted into the groove 6, is mounted on the bottom of the rotating reference plate 3. When the slider 7 contacts the right end of the groove 6, the front end face of the rotating reference plate 3 and the front end face of the fixed reference plate 2 are parallel to each other. The bottom of the slider 7 is an arc surface. By setting the slider 7 and the groove 6, the rotational movement of the rotating reference plate 3 can be guided, ensuring that the rotating reference plate 3 can only rotate along the direction of the groove 6. When the rotating reference plate 3 rotates around the axis 5, when the slider 7 rotates to the right end of the groove 6, the front end face of the rotating reference plate 3 will be on the same vertical plane as the front end face of the fixed reference plate 2.

[0024] A connecting plate 8 is mounted on the rear end face of the fixed reference plate 2. One end of the connecting plate 8 near the rotating reference plate 3 extends out of the fixed reference plate 2, and a reference plate connecting hole 9 is formed in the portion of the connecting plate 8 extending out of the fixed reference plate 2. A reference plate threaded hole that mates with the reference plate connecting hole 9 is formed on the rear end face of the rotating reference plate 3. The reference plate connecting hole 9 and the reference plate threaded hole are connected by bolts. This invention, by setting the connecting plate 8, can achieve relative fixation between the fixed reference plate 2 and the rotating reference plate 3. When we need to inspect the front or rear section of the rear wheel arch separately, we only need to insert bolts into the reference plate connecting hole 9 and the reference plate threaded hole, and install nuts on the bolts to achieve relative fixation between the rotating reference plate 3 and the fixed reference plate 2.

[0025] The rear wheel arch fixing module includes a first fixing block 11 and a second fixing block 12 supported by support legs 10, and the front wheel arch fixing module includes a second fixing block 12; the first fixing block 11 has a wheel arch fixing hole 13 for inserting a screw on the wheel arch, and the second fixing block 12 has a snap hole 14 for inserting a buckle on the wheel arch.

[0026] The front and rear wheel arch fixing modules of this utility model are mainly designed based on the fixing structure of the rear wheel arch and simulate the fixing method of the rear wheel arch in actual application. The front wheel arch fixing module may include multiple second fixing blocks 12, and the rear wheel arch fixing module may include multiple first fixing blocks 11 and multiple second fixing blocks 12. When fixing the rear wheel arch, the bolts and clips on the rear wheel arch can be inserted into the wheel arch fixing holes 13 of the first fixing block 11 and the clip holes 14 of the second fixing block 12, respectively. When fixing the front wheel arch, the clips on the front wheel arch can be inserted into the clip holes 14 of the second fixing block 12.

[0027] The first fixing block 11 includes an upper plate 15 and a lower plate 16, which are connected by bolts. The wheel arch fixing hole 13 is opened on the top surface of the upper plate 15. The upper plate 15 and the lower plate 16 are respectively provided with an upper rotating groove 17 and a lower rotating groove 18 that are interconnected. The wheel arch fixing hole 13 is connected to the upper rotating groove 17. The lower plate 16 is provided with a lower plate through hole 19 that is connected to the lower rotating groove 18. A fastening rod 38 passes through the lower plate through hole 19. The front end face of the fastening rod 38 is provided with a fastening threaded hole 39. The front end of the fastening rod 38 is inserted into the lower rotating groove 18 and is equipped with a protruding edge 20.

[0028] By designing the first fixing block 11 with the above-described structure, this utility model allows a fastening rod 38 to be movably installed in the first fixing block 11. The front end of the fastening rod 38 is in the upper rotating groove 17 and the lower rotating groove 18. The outer diameter of the protruding edge 20 is larger than the inner diameter of the wheel arch fixing hole 13 and the inner diameter of the lower plate through hole 19, respectively. This ensures that the protruding edge 20 of the fastening rod 38 will not detach in the upper rotating groove 17 and the lower rotating groove 18. When the wheel arch bolt is inserted into the wheel arch fixing hole 13, one end of the bolt will be inserted into the upper rotating groove 17. At this time, we move the fastening rod 38 upward and screw the wheel arch bolt into the fastening threaded hole 39 of the fastening rod 38. By rotating the fastening rod 38, the wheel arch bolt is finally fixed on the upper plate 15 of the first fixing block 11. When it is necessary to remove the wheel arch, we only need to rotate the fastening rod 38 downward.

[0029] The second fixing block 12 includes a base plate 21 fixedly connected to the support leg 10. Limiting grooves 22 are respectively opened on the front and rear sides of the base plate 21. Movable blocks 23 are respectively inserted into the limiting grooves 22 on both sides. The tops of the movable blocks 23 on both sides are respectively connected to the inwardly extending top plates 24. Semicircular holes are respectively opened on the opposite surfaces of the top plates 24 on both sides. The semicircular holes on both sides form a locking hole 14. The movable block 23 on the front side is provided with a locking thread hole. A locking screw 25 is inserted into the locking thread hole. The movable block 23 on the rear side is provided with a locking through hole. The rear end of the locking screw 25 passes through the locking through hole and is fitted with a stop block 26.

[0030] The size of the locking hole 14 on the second fixing block 12 of this invention simulates the locking hole on a car. When the buckle on the wheel arch is inserted into the locking hole 14 of the second fixing block 12, the buckle will be relatively fixed to the second fixing block 12, thereby achieving relative fixation between the wheel arch and the second fixing block 12. By designing the second fixing block 12 with the above structure, this invention facilitates the disassembly of the wheel arch. When the second fixing block 12 is used, the front end of the locking screw 25 is first passed through the locking through hole of the rear movable block 23 and the locking thread hole of the front movable block 23 in sequence. Then, the two movable blocks 23 on both sides are inserted into the two limiting grooves 22 on both sides. The two limiting grooves 22 on both sides can limit the two movable blocks 23 on both sides, so that the two movable blocks 23 on both sides can only move back and forth and cannot rotate. By rotating the locking screw 25, the stop block 26 at the rear end of the locking screw 25 will push the rear movable block 23 closer to the front movable block 23 until both movable blocks 23 on both sides are in contact with the base plate 21. At this time, the two top plates 24 on both sides are in contact, and the semi-circular holes on the two top plates 24 on both sides form the locking hole 14. When it is necessary to remove the wheel arch, we only need to rotate the locking screw 25 in the opposite direction so that the two movable blocks 23 on both sides are not in contact with the base plate 21.

[0031] Both the front wheel arch detection module and the rear wheel arch detection module include a clearance surface difference detection component. The clearance surface difference detection component includes an end face detection block 27, which is supported by a support leg 10.

[0032] The end face detection block 27 of this invention can detect the gap surface difference of the wheel arch end face to be tested. The end face detection block 27 is detachably connected to the support leg 10. The detection end face of the end face detection block 27 is respectively set opposite to the surface to be tested of the wheel arch. The gap surface difference of the surface to be tested of the wheel arch is determined by measuring the distance between the detection end face of the end face detection block 27 and the surface to be tested of the wheel arch. When it is necessary to detect the front section and the rear section of the rear wheel arch at the same time, the end face detection block 27 can be set at the bottom and lower side of the front section of the wheel arch through the support leg 10, and the end face detection block 27 can be set at the right side, bottom and lower side of the rear section of the wheel arch. When it is necessary to detect the front section of the rear wheel arch alone, the end face detection block 27 can be installed at the right side, bottom and lower side of the front section of the wheel arch through the support leg 10. When it is necessary to detect the rear section of the rear wheel arch alone, the end face detection block 27 can be installed at the left side, right side, bottom and lower side of the rear section of the wheel arch through the support leg 10.

[0033] The rear wheel arch detection module also includes a hole positioning detection component, which includes a first positioning block 28 and a second positioning block 29, both of which are supported by the support leg 10.

[0034] The first positioning block 28 has a first through hole, and a hole positioning rod 30 is slidably installed in the first through hole. The front end and the rear end of the hole positioning rod 30 are respectively provided with a positioning rod head 32 and a detection head 33. A spring 34 is installed between the positioning rod head 32 and the first positioning block 28.

[0035] This invention uses a hole positioning rod 30 to detect the accuracy of the position of a specific hole on the rear section of the rear wheel arch. In use, after the rear section of the rear wheel arch is fixed to the fixed reference plate 2, the hole positioning rod 30 can be pushed backward. The detection head 33 of the hole positioning rod 30 can then move backward and insert into the hole in the rear section of the wheel arch. If the detection head 33 cannot be inserted, the position of the hole to be detected is inaccurate. This invention incorporates a spring 34 to ensure that the detection head 33 automatically springs back after being inserted into the hole in the rear section of the wheel arch.

[0036] The second positioning block 29 has a second through hole, and a scribing pin 31 is slidably installed in the second through hole. The scribing pin 31 includes a scribing rod, a positioning head 35 is installed in the middle of the front end face of the scribing rod, and a scribing blade 36 is installed on the outside of the positioning head 35.

[0037] This utility model, by setting a scribing pin 31, can effectively mark the position of the hole on the wheel arch. In use, simply insert the positioning head 35 of the scribing rod into the hole of the rear section of the rear wheel arch, then use the scribing tool 36 to draw a circle on the outside of the hole, and finally use the drawn circle to determine the position of the hole.

Claims

1. A multifunctional wheel arch inspection tool, characterized in that, The system includes a testing platform (1), on which a fixed reference plate (2) is fixedly installed. A rotating reference plate (3) is provided on the left side of the fixed reference plate (2) of the testing platform (1). The left end of the rotating reference plate (3) is rotatably connected to the testing platform (1). A front wheel arch fixing module is provided on the front end surface of the rotating reference plate (3), and a rear wheel arch fixing module is provided on the front end surface of the fixed reference plate (2). A front wheel arch detection module is also provided on the front end surface of the rotating reference plate (3), and a rear wheel arch detection module is also provided on the front end surface of the fixed reference plate (2).

2. The multifunctional wheel arch inspection tool according to claim 1, characterized in that, The testing platform (1) has a vertical plate (4) installed on the rear side of the rotating reference plate (3), and the front end of the vertical plate (4) is rotatably connected to the left end of the rotating reference plate (3) through a rotating shaft (5).

3. The multifunctional wheel arch inspection tool according to claim 1, characterized in that, The top surface of the testing platform (1) is provided with an arc-shaped groove (6), and the bottom of the rotating reference plate (3) is equipped with a slider (7) that inserts into the groove (6). When the slider (7) contacts the right end of the groove (6), the front end face of the rotating reference plate (3) and the front end face of the fixed reference plate (2) are parallel to each other.

4. The multifunctional wheel arch inspection tool according to claim 1, characterized in that, A connecting plate (8) is installed on the rear end face of the fixed reference plate (2). The end of the connecting plate (8) near the rotating reference plate (3) extends out of the fixed reference plate (2), and the part of the connecting plate (8) extending out of the fixed reference plate (2) is provided with a reference plate connecting hole (9). The rear end face of the rotating reference plate (3) is provided with a reference plate threaded hole that mates with the reference plate connecting hole (9). The reference plate connecting hole (9) and the reference plate threaded hole are connected by bolts.

5. The multifunctional wheel arch inspection tool according to claim 1, characterized in that, The rear wheel arch fixing module includes a first fixing block (11) and a second fixing block (12) supported by a support leg (10), and the front wheel arch fixing module includes a second fixing block (12); the first fixing block (11) has a wheel arch fixing hole (13) for inserting a screw on the wheel arch, and the second fixing block (12) has a buckle hole (14) for inserting a buckle on the wheel arch.

6. The multifunctional wheel arch inspection tool according to claim 5, characterized in that, The first fixing block (11) includes an upper plate (15) and a lower plate (16), which are connected by bolts. The wheel arch fixing hole (13) is opened on the top surface of the upper plate (15). The upper plate (15) and the lower plate (16) are respectively provided with an upper rotating groove (17) and a lower rotating groove (18) that are connected to each other. The wheel arch fixing hole (13) is connected to the upper rotating groove (17). The lower plate (16) is provided with a lower plate through hole (19) that is connected to the lower rotating groove (18). A fastening rod (38) passes through the lower plate through hole (19). A fastening thread hole (39) is opened on the front end face of the fastening rod (38). The front end of the fastening rod (38) is inserted into the lower rotating groove (18) and a flange (20) is installed.

7. The multifunctional wheel arch inspection tool according to claim 5, characterized in that, The second fixing block (12) includes a base plate (21) fixedly connected to the support leg (10). Limiting grooves (22) are respectively opened on the front and rear sides of the base plate (21). Movable blocks (23) are respectively inserted into the limiting grooves (22) on both sides. The top of the movable blocks (23) on both sides are respectively connected to the inwardly extending top plate (24). Semi-circular holes are respectively opened on the opposite surfaces of the top plates (24) on both sides. The semi-circular holes on both sides form a locking hole (14). The movable block (23) on the front side is provided with a locking thread hole. A locking screw (25) is inserted into the locking thread hole. The movable block (23) on the rear side is provided with a locking through hole. The rear end of the locking screw (25) passes through the locking through hole and a stop block (26) is installed.

8. The multifunctional wheel arch inspection tool according to claim 1, characterized in that, Both the front wheel arch detection module and the rear wheel arch detection module include a clearance surface difference detection component. The clearance surface difference detection component includes an end face detection block (27), which is supported by a support leg (10). The rear wheel arch detection module also includes a hole positioning detection component. The hole positioning detection component includes a first positioning block (28) and a second positioning block (29). Both the first positioning block (28) and the second positioning block (29) are supported by a support leg (10). The first positioning block (28) has a first through hole, and a hole positioning rod (30) is slidably installed in the first through hole. The second positioning block (29) has a second through hole, and a scribing pin (31) is slidably installed in the second through hole.

9. The multifunctional wheel arch inspection tool according to claim 8, characterized in that, The front end and rear end of the hole positioning rod (30) are respectively provided with a positioning rod head (32) and a detection head (33), and a spring (34) is installed between the positioning rod head (32) and the first positioning block (28); the scribing pin (31) includes a scribing rod, a positioning head (35) is installed in the middle of the front end face of the scribing rod, and a scribing knife (36) is installed on the outside of the positioning head (35).

10. The multifunctional wheel arch inspection tool according to claim 1, characterized in that, The bottom of the testing platform (1) is equipped with wheels (37).

Images