Multi-state rear longitudinal beam assembly common clamp

Abstract

The utility model provides a common clamp for a multi-state rear longitudinal beam assembly, and aims to solve the problems of high cost and low efficiency caused by the fact that various types of shafts (a left / right long shaft, a lengthened shaft, a middle shaft and a short shaft) in the rear longitudinal beam assembly need to be equipped with a plurality of sets of clamps. The clamp comprises a clamping platform, a plurality of clamp bodies and a positioning part. The positioning part innovatively adopts the design of combining main positioning and auxiliary positioning: the main positioning pin is driven to lift through a positioning cylinder according to the specific positioning position of each shaft, so that quick switching is realized; and the auxiliary positioning is arranged at a common positioning position of each shaft, so that the clamping stability is ensured. According to the design, the clamping requirements of all types of rear longitudinal beam assemblies can be met only through one set of clamp, the tool cost is greatly reduced, the production switching efficiency is remarkably improved, the flexibility and the response speed of a production line are enhanced, and meanwhile the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to a common fixture for a multi-state rear longitudinal beam assembly. Background Technology

[0002] In the automotive manufacturing industry, the rear longitudinal beam assembly is a crucial component of the vehicle structure. Its precise and efficient machining and assembly are essential for ensuring overall vehicle quality and production cycle time. This is particularly true for the V363 rear longitudinal beam assembly, which comprises four different types: left / right long axles, extended axles, center axles, and short axles, totaling eight pieces. Each type, due to its different dimensions and shapes, typically requires specialized fixtures for clamping and positioning. In traditional production models, manufacturers had to design and manufacture eight separate sets of fixtures for these eight types of rear longitudinal beam assemblies. This not only significantly increased initial tooling costs but also required replacing the entire fixture set during mass production when switching between different types of axles within the rear longitudinal beam assembly. This time-consuming and labor-intensive process greatly impacted production line flexibility and overall production efficiency. Furthermore, frequent fixture changes increased the complexity and cost of equipment maintenance, hindering long-term production management and cost control. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-state rear longitudinal beam assembly common clamp for achieving efficient and flexible clamping of different types of shafts within the rear longitudinal beam assembly.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a common fixture for a multi-state rear longitudinal beam assembly, the common fixture for the multi-state rear longitudinal beam assembly comprising:

[0005] Clamping platform;

[0006] A plurality of clamp bodies are provided, the clamp bodies are disposed on the clamping platform, and the clamp bodies are used to clamp and fix the rear longitudinal beam assembly;

[0007] The positioning part is disposed on the clamping platform and includes a main positioning part and a secondary positioning part. The main positioning part is disposed at the unique positioning position of each shaft in the rear longitudinal beam assembly and includes a main positioning pin and a positioning cylinder for driving the main positioning pin to rise and fall. The secondary positioning part is disposed at the common positioning position of each shaft in the rear longitudinal beam assembly.

[0008] In one embodiment, the primary positioning further includes:

[0009] A first mounting base is fixed to the clamping platform, and the positioning cylinder is mounted on the first mounting base;

[0010] A lifting platform, wherein the lifting platform is mounted on the piston rod of the positioning cylinder, and the main positioning pin is mounted on the lifting platform;

[0011] A limiting block is disposed on the first mounting base, and the limiting block is used to limit the lifting height of the lifting platform.

[0012] In one embodiment, the secondary positioning includes:

[0013] A second mounting bracket is disposed on the clamping platform;

[0014] A secondary positioning pin is provided on the top of the second mounting bracket;

[0015] The auxiliary positioning blocks are disposed on the top two sides of the second mounting frame, and the auxiliary positioning blocks and the second mounting frame form a U-shaped space for accommodating the rear longitudinal beam assembly.

[0016] In one embodiment, the clamp body includes:

[0017] A third mounting bracket, which is fixed to the clamping platform;

[0018] A lifting cylinder, which is mounted on the third mounting bracket;

[0019] The lower clamping plate is fixed to the piston rod of the lifting cylinder;

[0020] A lower clamping block is disposed on the lower clamping plate;

[0021] A clamping cylinder, which is hinged to the lower clamping plate;

[0022] The upper clamping plate has one end hinged to the clamping cylinder and the bottom of the upper clamping plate hinged to the lower clamping plate.

[0023] An upper clamping block is disposed on the upper clamping plate. The upper clamping block and the lower clamping block cooperate to clamp the two wings and the bottom of the rear longitudinal beam assembly.

[0024] In one embodiment, a movable structure is provided at the bottom of the clamping platform.

[0025] In one embodiment, the edge of the clamping platform is provided with several lifting rings.

[0026] The above-described technical solutions in the embodiments of this utility model have at least the following technical effects or advantages:

[0027] The multi-state rear longitudinal beam assembly shared fixture provided in this embodiment of the invention, by combining primary and secondary positioning, requires only one set of fixtures to accommodate all types of shafts within the rear longitudinal beam assembly, greatly reducing the number of tooling fixtures and lowering costs. During mass production, when it is necessary to switch between different types of shafts within the rear longitudinal beam assembly, the positions of each primary positioning fixture can be quickly adjusted by controlling the lifting of the positioning cylinders, eliminating the need to replace the entire fixture set. This significantly shortens the changeover time and improves the production line's response speed and overall production efficiency. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of the shared fixture for the multi-state rear longitudinal beam assembly provided in this embodiment of the utility model;

[0030] Figure 2 A schematic diagram of the main positioning structure provided for an embodiment of this utility model;

[0031] Figure 3 A schematic diagram of the sub-positioning structure provided for an embodiment of this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the fixture body provided in an embodiment of the present utility model.

[0033] The labels for the various figures are as follows:

[0034] 1. Clamping platform; 2. Fixture body; 4. Shaft; 11. Moving structure; 12. Lifting ring; 21. Third mounting bracket; 22. Lifting cylinder; 23. Lower clamping plate; 24. Lower clamping block; 25. Clamping cylinder; 26. Upper clamping plate; 27. Upper clamping block; 31. Secondary positioning; 32. Primary positioning; 311. Secondary mounting bracket; 312. Secondary positioning pin; 313. Auxiliary positioning block; 321. Primary positioning pin; 322. Positioning cylinder; 323. First mounting seat; 324. Lifting platform; 325. Limit block. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Please see Figures 1 to 4 This application provides a multi-state rear longitudinal beam assembly shared fixture, including a clamping platform 1, several fixture bodies 2, and a positioning part. The fixture bodies 2 are mounted on the clamping platform 1 and are used to clamp and fix the rear longitudinal beam assembly. The positioning part is mounted on the clamping platform 1 and includes a main positioning 32 and a secondary positioning 31. The main positioning 32 is located at a unique positioning position for each shaft 4 within the rear longitudinal beam assembly, and includes a main positioning pin 321 and a positioning cylinder 322 that drives the main positioning pin 321 to rise and fall. The secondary positioning 31 is located at a common positioning position for each shaft 4 within the rear longitudinal beam assembly.

[0040] In this embodiment, a main positioning 32 and a secondary positioning 31 are set. A shared secondary positioning 31 is set at a common positioning position for each shaft 4 in the rear longitudinal beam assembly, and a main positioning 32 is set at a unique positioning position for each shaft 4 in the rear longitudinal beam assembly. When it is necessary to clamp other shafts 4 in the rear longitudinal beam assembly, the existing main positioning 32 is lowered by controlling the lifting of the positioning cylinder 322, and the main positioning 32 corresponding to the shaft 4 is raised, so as to quickly complete the field switching and realize the positioning and clamping of different shafts 4.

[0041] In one embodiment, the main positioning 32 further includes a limiting block 325, a lifting platform 324, and a first mounting base 323. The first mounting base 323 is fixed to the clamping platform 1, and the positioning cylinder 322 is mounted on the first mounting base 323. The lifting platform 324 is disposed on the piston rod of the positioning cylinder 322, and the main positioning pin 321 is disposed on the lifting platform 324. The limiting block 325 is disposed on the first mounting base 323 to limit the rising height of the lifting platform 324.

[0042] like Figure 2 As shown, when the main positioning 32 is needed, simply extend the piston rod of the positioning cylinder 322 within the main positioning 32 to raise the lifting platform 324 until it is flush with the limit block 325. This causes the main positioning pin 321 to move upward to the positioning height, allowing the shaft 4 of the rear longitudinal beam assembly to be positioned via the main positioning 32. Conversely, when switching to other shafts 4 of the rear longitudinal beam assembly, simply retract the piston rod of the positioning cylinder 322 within the main positioning 32 to lower the main positioning pin 321, preventing the main positioning 32 from interfering with the clamping of the new shaft 4.

[0043] like Figure 3 As shown, in one embodiment, the secondary positioning 31 includes auxiliary positioning blocks 313, secondary positioning pins 312, and a second mounting bracket 311. The second mounting bracket 311 is disposed on the clamping platform 1; the secondary positioning pins 312 are disposed on the top of the second mounting bracket 311; the auxiliary positioning blocks 313 are disposed on both sides of the top of the second mounting bracket 311, and the auxiliary positioning blocks 313 and the second mounting bracket 311 form a U-shaped space for accommodating the rear longitudinal beam assembly. The secondary positioning 31, as a shared positioning mechanism, adopts a fixed structure, and by providing auxiliary positioning blocks 313 on both sides of the top of the second mounting bracket 311, the positioning holes on the shaft 4 can be quickly aligned with the secondary positioning pins 312 for positioning.

[0044] like Figure 4As shown, in one embodiment, the fixture body 2 includes an upper clamping block 27, a lifting cylinder 22, a lower clamping plate 23, a lower clamping block 24, a clamping cylinder 25, an upper clamping plate 26, and a third mounting frame 21. The third mounting frame 21 is fixed on the clamping platform 1; the lifting cylinder 22 is mounted on the third mounting frame 21; the lower clamping plate 23 is fixed on the piston rod of the lifting cylinder 22; the lower clamping block 24 is disposed on the lower clamping plate 23; the clamping cylinder 25 is hinged to the lower clamping plate 23; one end of the upper clamping plate 26 is hinged to the clamping cylinder 25, and the bottom of the upper clamping plate 26 is hinged to the lower clamping plate 23; the upper clamping block 27 is disposed on the upper clamping plate 26, and the upper clamping block 27 and the lower clamping block 24 cooperate to clamp the two wings and the bottom of the rear longitudinal beam assembly.

[0045] The lifting cylinder 22 controls the clamping height of the clamp body 2. When it is necessary to clamp and fix the shaft 4, simply extend the piston rod of the clamping cylinder 25 to adjust the clamping height of the upper clamping plate 26 around its hinge point with the lower clamping plate 23. Figure 4 The upper clamping plate 26 is rotated clockwise, which causes the right end of the upper clamping plate 26 to press down, thereby clamping the shaft 4 with the upper clamping block 27 and the lower clamping block 24.

[0046] Specifically, several clamping bodies 2 on the clamping platform 1 are arranged in a straight line, and each clamping body 2 works together to clamp the shaft 4.

[0047] In one embodiment, a movable structure 11 is provided at the bottom of the clamping platform 1. The movable structure 11 may specifically be wheels. Through the movable structure 11, the operator can more conveniently move the clamping platform 1 to different work areas, or flexibly arrange it according to production needs.

[0048] In one embodiment, the edge of the clamping platform 1 is provided with a plurality of lifting rings 12. The lifting rings 12 can be designed as sturdy metal rings or hooks, capable of bearing the weight of the clamping platform 1 and the workpieces on it. By connecting the lifting equipment (such as a crane, overhead crane, etc.) to the lifting rings 12, the clamping platform 1 and the workpieces on it can be easily lifted and transported as a whole.

[0049] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A common clamp for a multi-state rear longitudinal beam assembly, characterized in that, The shared fixture for the multi-state rear longitudinal beam assembly includes: Clamping platform; A plurality of clamp bodies are provided, the clamp bodies are disposed on the clamping platform, and the clamp bodies are used to clamp and fix the rear longitudinal beam assembly; The positioning part is disposed on the clamping platform and includes a main positioning part and a secondary positioning part. The main positioning part is disposed at the unique positioning position of each shaft in the rear longitudinal beam assembly and includes a main positioning pin and a positioning cylinder for driving the main positioning pin to rise and fall. The secondary positioning part is disposed at the common positioning position of each shaft in the rear longitudinal beam assembly.

2. The multi-state rear longitudinal beam assembly common clamp according to claim 1, characterized in that, The primary positioning also includes: A first mounting base is fixed to the clamping platform, and the positioning cylinder is mounted on the first mounting base; A lifting platform, wherein the lifting platform is mounted on the piston rod of the positioning cylinder, and the main positioning pin is mounted on the lifting platform; A limiting block is disposed on the first mounting base, and the limiting block is used to limit the lifting height of the lifting platform.

3. A common fixture for a multi-state rear longitudinal beam assembly according to claim 1, characterized in that, The secondary positioning includes: A second mounting bracket is disposed on the clamping platform; A secondary positioning pin is provided on the top of the second mounting bracket; The auxiliary positioning blocks are disposed on the top two sides of the second mounting frame, and the auxiliary positioning blocks and the second mounting frame form a U-shaped space for accommodating the rear longitudinal beam assembly.

4. A common fixture for a multi-state rear longitudinal beam assembly according to claim 1, characterized in that, The fixture body includes: A third mounting bracket, which is fixed to the clamping platform; A lifting cylinder, which is mounted on the third mounting bracket; The lower clamping plate is fixed to the piston rod of the lifting cylinder; A lower clamping block is disposed on the lower clamping plate; A clamping cylinder, which is hinged to the lower clamping plate; The upper clamping plate has one end hinged to the clamping cylinder and the bottom of the upper clamping plate hinged to the lower clamping plate. An upper clamping block is disposed on the upper clamping plate. The upper clamping block and the lower clamping block cooperate to clamp the two wings and the bottom of the rear longitudinal beam assembly.

5. A common fixture for a multi-state rear longitudinal beam assembly according to claim 1, characterized in that: The bottom of the clamping platform is equipped with a movable structure.

6. A common fixture for a multi-state rear longitudinal beam assembly according to claim 1, characterized in that: The clamping platform is equipped with several lifting rings along its edge.

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