A rear suspension mounting plate welding fixture assembly

Abstract

The utility model relates to automobile welding technical field especially is a kind of rear suspension mounting plate welding jig assembly, including base and the first clamping subassembly, second clamping subassembly, third clamping subassembly and fourth clamping subassembly being sequentially arranged along the length direction of the base, the first clamping subassembly includes first pedestal, first adjusting frame and first clamping device, the first pedestal is located on the base, the first adjusting frame is located on the top of the first pedestal, the first clamping device is located on the top of the first adjusting frame, second clamping subassembly includes second pedestal, third pedestal, second adjusting frame, supporting device, second clamping device and third clamping device;A kind of rear suspension mounting plate welding jig assembly disclosed in the present application, by setting each adjusting frame, rear suspension mounting plate can be put into from the side of the jig assembly, reduce the difficulty of rear suspension mounting plate taking and placing, reduce the working intensity of operator.

Description

Technical Field

[0001] This utility model relates to the field of automotive welding technology, and in particular to a rear suspension mounting plate welding fixture assembly. Background Technology

[0002] In automotive welding production lines, the clamping process is completed on welding fixtures, making the fixtures crucial throughout the entire welding process. However, due to the complex shape and large size of the rear suspension mounting plate, and the fact that existing fixtures only have adjustable clamping parts while the base underneath cannot be adjusted, it is difficult to place and remove the rear suspension mounting plate.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a rear suspension mounting plate welding fixture assembly to solve the problem of difficulty in picking up and placing the existing rear suspension mounting plate welding fixture.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rear suspension mounting plate welding fixture assembly includes a base and a first clamping assembly, a second clamping assembly, a third clamping assembly, and a fourth clamping assembly arranged sequentially along the length of the base. The first clamping assembly and the third clamping assembly have identical structures, and the second clamping assembly and the fourth clamping assembly have identical structures. The first clamping assembly includes a first upright, a first adjusting frame, and a first clamping device. The first upright is disposed on the base, the first adjusting frame is disposed on top of the first upright, and the first clamping device is disposed on top of the first adjusting frame. The clamping assembly includes a second stand, a third stand, a second adjusting frame, a support device, a second clamping device, and a third clamping device. The second stand and the third stand are sequentially disposed on the base facing away from the first stand. The second adjusting frame is disposed on the top of the second stand. The second clamping device is disposed on the top of the second adjusting frame. One end of the support device is connected to the top of the third stand, and the other end of the support device is suspended in the middle of the second adjusting frame. The third clamping device is disposed on the top of the support device at the end away from the second stand.

[0007] As described above, a rear suspension mounting plate welding fixture assembly includes a first adjusting frame comprising a first left adjusting frame and a first right adjusting frame, which are respectively disposed on both sides of the top of the first support. A first clamping device is disposed on the top of either the first left adjusting frame or the first right adjusting frame. The second adjusting frame comprises a second left adjusting frame and a second right adjusting frame. Two second clamping devices are disposed on both sides of the top of the second support. The other end of the supporting device is suspended between the second left adjusting frame and the second right adjusting frame.

[0008] As described above, in a rear suspension mounting plate welding fixture assembly, the first left adjustment frame and the first right adjustment frame have the same structure. The first left adjustment frame includes a swing arm, a swing member, a locking mechanism, a limiting mechanism, a pin connection mechanism, and a clamping block. The swing member, the pin connection mechanism, and the clamping block are arranged sequentially from bottom to top on one side of the swing arm. The end of the swing member away from the swing arm is hinged to the first upright. The locking mechanism connects the swing arm and the first upright. The limiting mechanism connects the swing arm and the first upright.

[0009] As described above, a rear suspension mounting plate welding fixture assembly includes a locking mechanism comprising a hook seat, a locking seat, a locking handle, a movable adjustment component, and a U-shaped locking buckle. The hook seat is disposed on the first upright, the locking seat is disposed on the swing arm, one end of the locking handle is hinged to the locking seat, the movable adjustment component is rotatably disposed on the locking handle and connected to the U-shaped locking buckle, and the U-shaped locking buckle and the hook seat are engaged.

[0010] As described above, a rear suspension mounting plate welding fixture assembly includes a rotating rod, two screws, two screw holes, and four nuts. The rotating rod passes through the locking handle, and the two screw holes are respectively located at both ends of the rotating rod. One end of each of the two screws is connected to both ends of the U-shaped latch, and the other end of each of the two screws passes through the two screw holes respectively. Nuts are fitted on both sides of each screw opposite to the rotating rod.

[0011] As described above, a rear suspension mounting plate welding fixture assembly includes a limiting mechanism comprising a first limiting member, a second limiting member, a slot, and a protrusion. The first limiting member is located on the side of the swing arm facing the first support, and the second limiting member is located on the first support corresponding to the first limiting member. The slot is located on the side of the first limiting member facing the second limiting member, and the protrusion is located on the side of the second limiting member facing the first limiting member. The slot and the protrusion are engaged.

[0012] As described above, in a rear suspension mounting plate welding fixture assembly, the pin connection mechanism includes an L-shaped connector, an L-shaped bending member, and a pin connection post. One end of the L-shaped connector is connected to the swing arm, and the other end of the L-shaped connector is connected to one end of the L-shaped bending member. The other end of the L-shaped bending member bends toward the area between the first left adjustment frame and the first right adjustment frame. The pin connection post is located on the other end of the L-shaped bending member.

[0013] As described above, in a rear suspension mounting plate welding fixture assembly, the first clamping device includes a manual clamp, a pressure arm, and a clamping block. The manual clamp is located on the top of the first left adjustment frame or the first right adjustment frame, and the pressure arm is connected to the manual clamp and the clamping block, respectively.

[0014] As described above, a rear suspension mounting plate welding fixture assembly includes an L-shaped support plate, a support block, an inclined frame, and a pin. One end of the L-shaped support plate is connected to the top of the third support, and the other end of the L-shaped support plate extends between the second left adjusting frame and the second right adjusting frame. The support block is disposed on the L-shaped support plate, the inclined frame is disposed on one side of the L-shaped support plate, and the pin is disposed on the inclined frame adjacent to the support block.

[0015] As described above, a rear suspension mounting plate welding fixture assembly further includes two support mechanisms. One end of each support mechanism is connected to the second left adjustment frame and the second right adjustment frame, respectively, and the other end of each support mechanism is connected to the L-shaped support plate. Each support mechanism includes a first support member, a second support member, and a connecting plate. The first support member is disposed on the L-shaped support plate, and the connecting plate is disposed on the second left adjustment frame or the second right adjustment frame. The second support member is disposed on the connecting plate corresponding to the first support member.

[0016] Beneficial effects:

[0017] This utility model discloses a welding fixture assembly for a rear suspension mounting plate, including a base and a first clamping assembly, a second clamping assembly, a third clamping assembly, and a fourth clamping assembly arranged sequentially along the length of the base. The first clamping assembly includes a first upright, a first adjusting frame, and a first clamping device. The second clamping assembly includes a second upright, a third upright, a second adjusting frame, a support device, a second clamping device, and a third clamping device. Using the base as a platform, both ends of the rear suspension mounting plate are clamped and fixed by the first and second clamping assemblies, and the third and fourth clamping assemblies, respectively. The assembly allows for easy removal and placement of the rear suspension mounting plate. During plate loading, the first adjusting frame can be moved relative to the first upright, and the second adjusting frame can be moved relative to the second upright to form a notch for placing the rear suspension mounting plate. When the rear suspension mounting plate is placed on the first and second uprights, the corresponding adjusting frames are reset to initially fix the rear suspension mounting plate. Then, the rear suspension mounting plate is clamped and fixed by the first clamping device, the second clamping device, and the third clamping device respectively. The rear suspension mounting plate welding fixture assembly disclosed in this application can be inserted from the side of the fixture assembly by setting each adjusting frame, which reduces the difficulty of picking up and placing the rear suspension mounting plate and reduces the workload of the operator. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the fixture assembly provided by this utility model;

[0019] Figure 2 A schematic diagram of the structure of the first clamping assembly provided by this utility model;

[0020] Figure 3 A structural schematic diagram of the first clamping assembly provided by this utility model from another angle;

[0021] Figure 4 This is a schematic diagram of the structure of the second clamping assembly provided by this utility model;

[0022] Figure 5 This is a structural schematic diagram of the second clamping assembly provided by this utility model from another angle;

[0023] Reference numerals: 1. Base; 2. First clamping assembly; 21. First upright; 22. First left adjusting frame; 23. First right adjusting frame; 24. First clamping device; 241. Manual clamp; 242. Pressure arm; 243. Clamping block; 25. Swing arm; 26. Swinging component; 27. Locking mechanism; 271. Lock hook seat; 272. Lock seat; 273. Lock handle; 274. Movable adjusting assembly; 275. U-shaped lock; 276. Rotating rod; 277. Screw; 278. Screw hole; 279. Nut; 28. Limiting mechanism; 281. First limiting component; 282. Second limiting component; 283. Lock 284. Groove; 29. ​​Protrusion; 29. ​​Pin connection mechanism; 291. L-shaped connector; 292. L-shaped bending part; 293. Pin connection post; 20. Clamping block; 3. Second clamping assembly; 31. Second stand; 32. Third stand; 33. Second left adjusting frame; 34. Second right adjusting frame; 35. Support device; 351. L-shaped support plate; 352. Support block; 353. Inclined frame; 354. Insert pin; 36. Second clamping device; 37. Third clamping device; 4. Third clamping assembly; 5. Fourth clamping assembly; 6. Support mechanism; 61. First support member; 62. Second support member; 63. Connecting plate. Detailed Implementation

[0024] This utility model provides a rear suspension mounting plate welding fixture assembly. To make the purpose, technical solution and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments.

[0025] In the description of this utility model, it should be understood that the terms "top" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation" and "connection" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] like Figure 1-5As shown in the figure, this application proposes a rear suspension mounting plate welding fixture assembly, including a base 1 and a first clamping assembly 2, a second clamping assembly 3, a third clamping assembly 4, and a fourth clamping assembly 5 arranged sequentially along the length direction of the base 1. The first clamping assembly 2 and the third clamping assembly 4 have the same structure, and the second clamping assembly 3 and the fourth clamping assembly 5 have the same structure. The first clamping assembly 2 includes a first stand 21, a first adjusting frame, and a first clamping device 24. The first stand 21 is disposed on the base 1, the first adjusting frame is disposed on the top of the first stand 21, and the first clamping device 24 is disposed on the top of the first adjusting frame. The clamping assembly 3 includes a second stand 31, a third stand 32, a second adjusting frame, a support device 35, a second clamping device 36, and a third clamping device 37. The second stand 31 and the third stand 32 are sequentially disposed on the base 1 facing away from the first stand 21. The second adjusting frame is disposed on the top of the second stand 31. The second clamping device 36 is disposed on the top of the second adjusting frame. One end of the support device 35 is connected to the top of the third stand 32, and the other end of the support device 35 is suspended in the middle of the second adjusting frame. The third clamping device 37 is disposed on the top of the support device 35 at the end away from the second stand 31.

[0027] This utility model discloses a rear suspension mounting plate welding fixture assembly, including a base 1 and a first clamping assembly 2, a second clamping assembly 3, a third clamping assembly 4, and a fourth clamping assembly 5 arranged sequentially along the length of the base 1. The first clamping assembly 2 includes a first stand 21, a first adjusting frame, and a first clamping device 24. The second clamping assembly 3 includes a second stand 31, a third stand 32, a second adjusting frame, a support device 35, a second clamping device 36, and a third clamping device 37. Using the base 1 as a platform, both ends of the rear suspension mounting plate are clamped and fixed by the first clamping assembly 2, the second clamping assembly 3, the third clamping assembly 4, and the fourth clamping assembly 5, respectively. When the rear suspension mounting plate needs to be placed or removed, the first adjusting bracket can be moved relative to the first upright 21, and the second adjusting bracket can be moved relative to the second upright 31 to form a notch for placing the rear suspension mounting plate. When the rear suspension mounting plate is placed on the first upright 21 and the second upright 31, the corresponding adjusting bracket is reset to initially fix the rear suspension mounting plate. Then, the rear suspension mounting plate is clamped and fixed by the first clamping device 24, the second clamping device 36 and the third clamping device 37 respectively. The rear suspension mounting plate welding fixture assembly disclosed in this application can be inserted from the side of the fixture assembly by setting each adjusting bracket, which reduces the difficulty of placing or removing the rear suspension mounting plate and reduces the workload of the operator.

[0028] The first adjustment frame includes a first left adjustment frame 22 and a first right adjustment frame 23, which are respectively located on both sides of the top of the first stand 21. The first clamping device 24 is located on the top of the first left adjustment frame 22 or the first right adjustment frame 23. The second adjustment frame includes a second left adjustment frame 33 and a second right adjustment frame 34. The second clamping device 36 includes two devices. The second left adjustment frame 33 and the second right adjustment frame 34 are respectively located on both sides of the top of the second stand 31. The two second clamping devices 36 are respectively located on the top of the second left adjustment frame 33 and the second right adjustment frame 34. The other end of the supporting device 35 is suspended between the second left adjustment frame 33 and the second right adjustment frame 34, allowing the rear mounting plate to be picked up and put down from either side of the clamp assembly without frequently rotating the clamp assembly or walking to one side for picking up and putting down.

[0029] In this embodiment, the first clamping device 24 in the first clamping assembly 2 is located at the top of the first right adjustment frame 23, the third clamping device 37 in the second clamping assembly 3 is located on the right side of the support device 35, the first clamping device 24 in the third clamping assembly 4 is located at the top of the first left adjustment frame 22, and the third clamping device 37 in the fourth clamping assembly 5 is located on the left side of the support device 35. That is, the first clamping assembly 2 and the second clamping assembly 3 are clamped from the right side of the rear suspension mounting plate, and the third clamping assembly 4 and the fourth clamping assembly 5 are clamped from the left side of the rear suspension mounting plate, balancing the clamping forces at both ends and making the clamping more stable.

[0030] The first left adjusting frame 22 and the first right adjusting frame 23 have the same structure. The first left adjusting frame 22 includes a swing arm 25, a swing member 26, a locking mechanism 27, a limiting mechanism 28, a pin connection mechanism 29, and a clamping block 20. The swing member 26, the pin connection mechanism 29, and the clamping block 20 are arranged sequentially from bottom to top on one side of the swing arm 25. The end of the swing member 26 away from the swing arm 25 is hinged to the first upright 21. The locking mechanism 27 connects the swing arm 25 and the first upright 21. The limiting mechanism 28 connects the first upright 21 to the first right adjusting frame 22. The swing arm 25 and the first stand 21 are connected. The swing arm 25 rotates relative to the first stand 21 via the swing member 26. When the swing arm 25 rotates toward the first stand 21, the limiting mechanism 28 restricts the rotation of the swing arm 25 to prevent collision between the swing arm 25 and the first stand 21. The locking mechanism 27 locks the swing arm 25 and the first stand 21. The clamping block 20 and the pin connection mechanism 29 press on one side of the rear suspension mounting plate, thereby achieving initial fixation of the rear suspension mounting plate. The structure is simple.

[0031] The locking mechanism 27 includes a hook seat 271, a latch seat 272, a handle 273, a movable adjustment component 274, and a U-shaped latch 275. The hook seat 271 is mounted on the first stand 21, the latch seat 272 is mounted on the swing arm 25, one end of the handle 273 is hinged to the latch seat 272, the movable adjustment component 274 is rotatably mounted on the handle 273 and connected to the U-shaped latch 275, the U-shaped latch 275 and the hook seat 271 engage, and by rotating the handle 273, the U-shaped latch 275 engages with the hook seat 271, thereby locking the swing arm 25. The movable adjustment component 274 includes a rotating rod 276. The system comprises two screws 277, two screw holes 278, and four nuts 279. A rotating rod 276 passes through the locking handle 273. The two screw holes 278 are located at both ends of the rotating rod 276. One end of each screw 277 is connected to both ends of the U-shaped latch 275, and the other end of each screw 277 passes through the corresponding screw holes 278. Nuts 279 are fitted on both sides of each screw 277 relative to the rotating rod 276. By adjusting the two nuts 279 on each screw 277, the length of the U-shaped latch 275 can be adjusted, improving the adjustment accuracy of the latch mechanism 27 and ensuring the reliability of locking the swing arm 25.

[0032] The limiting mechanism 28 includes a first limiting member 281, a second limiting member 282, a slot 283, and a protrusion 284. The first limiting member 281 is located on the side of the swing arm 25 facing the first stand 21. The second limiting member 282 is located on the first stand 21 corresponding to the first limiting member 281. The slot 283 is located on the side of the first limiting member 281 facing the second limiting member 282. The protrusion 284 is located on the side of the second limiting member 282 facing the first stand 21. On one side of the limiting member 281, the slot 283 and the protrusion 284 engage. The first limiting member 281 and the second limiting member 282 are made of rubber. On the one hand, during the rotation of the swing arm 25, the swing arm 25 is prevented from colliding with the first stand 21, thus providing a buffer for the swing arm 25. On the other hand, through the cooperation of the slot 283 and the protrusion 284, the swing arm 25 is restricted from swaying along the axial direction of the rotation axis, thereby improving the stability of the clamping.

[0033] The pin connection mechanism 29 includes an L-shaped connector 291, an L-shaped bending member 292, and a pin connection post 293. One end of the L-shaped connector 291 is connected to the swing arm 25, and the other end of the L-shaped connector 291 is connected to one end of the L-shaped bending member 292. The other end of the L-shaped bending member 292 bends towards the area between the first left adjustment frame 22 and the first right adjustment frame 23. The pin connection post 293 is located on the other end of the L-shaped bending member 292. The L-shaped connector 291 and the L-shaped bending member 292 provide support for the pin connection post 293. The pin connection post 293 is inserted into the hole of the rear suspension mounting plate to further fix the rear suspension mounting plate.

[0034] The first clamping device 24 includes a manual clamp 241, a pressure arm 242, and a clamping block 243. The manual clamp 241 is located on the top of the first left adjustment frame 22 or the first right adjustment frame 23. The pressure arm 242 is connected to the manual clamp 241 and the clamping block 243 respectively. By operating the manual clamp 241, the clamping block 243 is moved by the pressure arm 242 to achieve clamping and fixing of the rear suspension mounting plate.

[0035] The supporting device 35 includes an L-shaped supporting plate 351, a supporting block 352, a tilting frame 353, and a connecting pin 354. One end of the L-shaped supporting plate 351 is connected to the top of the third support 32, and the other end of the L-shaped supporting plate 351 extends between the second left adjusting frame 33 and the second right adjusting frame 34. The supporting block 352 is disposed on the L-shaped supporting plate 351, and the tilting frame 353 is disposed on one side of the L-shaped supporting plate 351. The connecting pin 354 is disposed adjacent to the supporting block 352 on the tilting frame 353. The L-shaped supporting plate 351 and the supporting block 352 support the rear suspension mounting plate. The connecting pin 354 is fixed by the tilting frame 353 and inserted into the hole of the rear suspension mounting plate to fix the rear suspension mounting plate.

[0036] The clamp assembly also includes two support mechanisms 6. One end of each support mechanism 6 is connected to the second left adjustment frame 33 and the second right adjustment frame 34, respectively, and the other end of each support mechanism 6 is connected to the L-shaped support plate 351. Each support mechanism 6 includes a first support member 61, a second support member 62, and a connecting plate 63. The first support member 61 is disposed on the L-shaped support plate 351, and the connecting plate 63 is disposed on the second left adjustment frame 33 or the second right adjustment frame 34. The second support member 62 is disposed on the connecting plate 63 corresponding to the first support member 61. During the clamping process of the rear suspension mounting plate, the mutual support of the first support member 61 and the second support member 62 prevents the L-shaped support plate 351 from shaking or deforming under the action of the gravity of the rear suspension mounting plate or the clamping force of the clamping device, providing additional support for the support device 35 and enhancing the stability of the support device 35.

[0037] In the embodiments of this application, the first clamping device 24, the second clamping device 36 and the third clamping device 37 have the same structure, and the first left adjusting frame 22, the second left adjusting frame 33 and the second right adjusting frame 34 have the same structure.

[0038] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A rear suspension mounting plate welding fixture assembly, characterized in that, The system includes a base (1) and a first clamping assembly (2), a second clamping assembly (3), a third clamping assembly (4), and a fourth clamping assembly (5) arranged sequentially along the length of the base (1). The first clamping assembly (2) and the third clamping assembly (4) have the same structure, and the second clamping assembly (3) and the fourth clamping assembly (5) have the same structure. The first clamping assembly (2) includes a first stand (21), a first adjusting frame, and a first clamping device (24). The first stand (21) is located on the base (1), the first adjusting frame is located on top of the first stand (21), and the first clamping device (24) is located on top of the first adjusting frame. The second clamping assembly (3) includes a second stand (21), a second clamping assembly (24), and a third clamping assembly (5). 31) A third stand (32), a second adjusting frame, a supporting device (35), a second clamping device (36) and a third clamping device (37). The second stand (31) and the third stand (32) are arranged sequentially on the base (1) on the side away from the first stand (21). The second adjusting frame is arranged on the top of the second stand (31). The second clamping device (36) is arranged on the top of the second adjusting frame. One end of the supporting device (35) is connected to the top of the third stand (32). The other end of the supporting device (35) is suspended in the middle of the second adjusting frame. The third clamping device (37) is arranged on the top of the supporting device (35) away from the second stand (31).

2. The rear suspension mounting plate welding fixture assembly according to claim 1, characterized in that, The first adjustment frame includes a first left adjustment frame (22) and a first right adjustment frame (23). The first left adjustment frame (22) and the first right adjustment frame (23) are respectively located on both sides of the top of the first stand (21). The first clamping device (24) is located on the top of the first left adjustment frame (22) or the first right adjustment frame (23). The second adjustment frame includes a second left adjustment frame (33) and a second right adjustment frame (34). The second clamping device (36) includes two. The second left adjustment frame (33) and the second right adjustment frame (34) are respectively located on both sides of the top of the second stand (31). The two second clamping devices (36) are respectively located on the top of the second left adjustment frame (33) and the second right adjustment frame (34). The other end of the supporting device (35) is suspended between the second left adjustment frame (33) and the second right adjustment frame (34).

3. The rear suspension mounting plate welding fixture assembly according to claim 2, characterized in that, The first left adjustment frame (22) and the first right adjustment frame (23) have the same structure. The first left adjustment frame (22) includes a swing arm (25), a swing member (26), a locking mechanism (27), a limiting mechanism (28), a pin connection mechanism (29), and a clamping block (20). The swing member (26), the pin connection mechanism (29), and the clamping block (20) are arranged sequentially from bottom to top on one side of the swing arm (25). The end of the swing member (26) away from the swing arm (25) is hinged to the first stand (21). The locking mechanism (27) connects the swing arm (25) and the first stand (21). The limiting mechanism (28) connects the swing arm (25) and the first stand (21).

4. The rear suspension mounting plate welding fixture assembly according to claim 3, characterized in that, The locking mechanism (27) includes a hook seat (271), a lock seat (272), a handle (273), a movable adjustment component (274), and a U-shaped lock (275). The hook seat (271) is located on the first stand (21), the lock seat (272) is located on the swing arm (25), one end of the handle (273) is hinged to the lock seat (272), the movable adjustment component (274) is rotatably located on the handle (273) and connected to the U-shaped lock (275), and the U-shaped lock (275) and the hook seat (271) are engaged.

5. The rear suspension mounting plate welding fixture assembly according to claim 4, characterized in that, The movable adjustment assembly (274) includes a rotating rod (276), two screws (277), two screw holes (278), and four nuts (279). The rotating rod (276) passes through the lock handle (273). The two screw holes (278) are respectively located at both ends of the rotating rod (276). One end of each of the two screws (277) is connected to both ends of the U-shaped latch (275). The other ends of the two screws (277) are respectively passed through the two screw holes (278). Each screw (277) is fitted with a nut (279) on both sides opposite to the rotating rod (276).

6. The rear suspension mounting plate welding fixture assembly according to claim 3, characterized in that, The limiting mechanism (28) includes a first limiting member (281), a second limiting member (282), a slot (283), and a protrusion (284). The first limiting member (281) is located on the side of the swing arm (25) facing the first stand (21). The second limiting member (282) is located on the first stand (21) corresponding to the first limiting member (281). The slot (283) is located on the side of the first limiting member (281) facing the second limiting member (282). The protrusion (284) is located on the side of the second limiting member (282) facing the first limiting member (281). The slot (283) and the protrusion (284) are engaged.

7. The rear suspension mounting plate welding fixture assembly according to claim 3, characterized in that, The pin connection mechanism (29) includes an L-shaped connector (291), an L-shaped bending member (292), and a pin connection post (293). One end of the L-shaped connector (291) is connected to the swing arm (25), and the other end of the L-shaped connector (291) is connected to one end of the L-shaped bending member (292). The other end of the L-shaped bending member (292) bends toward the area between the first left adjustment frame (22) and the first right adjustment frame (23). The pin connection post (293) is located on the other end of the L-shaped bending member (292).

8. The rear suspension mounting plate welding fixture assembly according to claim 3, characterized in that, The first clamping device (24) includes a manual clamp (241), a pressure arm (242), and a clamping block (243). The manual clamp (241) is located on the top of the first left adjustment frame (22) or the first right adjustment frame (23). The pressure arm (242) is connected to the manual clamp (241) and the clamping block (243) respectively.

9. A rear suspension mounting plate welding fixture assembly according to claim 2, characterized in that, The supporting device (35) includes an L-shaped support plate (351), a support block (352), an inclined frame (353), and a pin (354). One end of the L-shaped support plate (351) is connected to the top of the third stand (32), and the other end of the L-shaped support plate (351) extends between the second left adjusting frame (33) and the second right adjusting frame (34). The support block (352) is located on the L-shaped support plate (351), and the inclined frame (353) is located on one side of the L-shaped support plate (351). The pin (354) is located adjacent to the support block (352) on the inclined frame (353).

10. A rear suspension mounting plate welding fixture assembly according to claim 9, characterized in that, The fixture assembly also includes two support mechanisms (6). One end of each support mechanism (6) is connected to the second left adjustment frame (33) and the second right adjustment frame (34), respectively. The other end of each support mechanism (6) is connected to the L-shaped support plate (351). Each support mechanism (6) includes a first support member (61), a second support member (62), and a connecting plate (63). The first support member (61) is disposed on the L-shaped support plate (351), and the connecting plate (63) is disposed on the second left adjustment frame (33) or the second right adjustment frame (34). The second support member (62) is disposed on the connecting plate (63) corresponding to the first support member (61).

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