A welding positioning clamp for a new energy automobile front floor assembly

Abstract

This utility model discloses a welding positioning fixture for the front floor assembly of new energy vehicles, including a welding worktable. The welding worktable is equipped with a first clamping and positioning device, a second clamping and positioning device, a third clamping and positioning device, a fourth clamping and positioning device, a fifth clamping and positioning device, and a sixth clamping and positioning device. The first positioning device is installed at the center of the welding worktable. This utility model achieves precise welding of the front floor assembly of new energy vehicles by pre-setting multiple clamping and fixing positions for the front floor assembly. This prevents incorrect placement of parts, reduces worker workload, improves worker efficiency, and provides stable and strong clamping force, ensuring the quality of the welded product and making the product more stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, specifically a welding positioning fixture for the front floor assembly of new energy vehicles. Background Technology

[0002] The front floor of a new energy vehicle, where it connects to the left and right door sills, is a crucial component of the vehicle's chassis. It primarily supports the engine and front suspension system, providing additional structural strength during a collision. The front floor assembly of a new energy vehicle mainly comprises the front floor sub-assembly, the front crossbeam assembly for the front seats, the rear crossbeam assembly for the front seats, the left door sill side beam assembly, and the right door sill side beam assembly. These assemblies are connected to their constituent parts and the front floor body via welding. The front floor assembly experiences complex stresses, bearing the weight of its own components, the front seats, and the occupants, as well as various torques and forces transmitted from the chassis during vehicle movement. Therefore, strict requirements are placed on the machining precision of the front floor assembly. During welding, the front floor assembly of a new energy vehicle is secured using welding fixtures to ensure that the components do not move or loosen during processing, guaranteeing machining accuracy.

[0003] Currently, when welding the front floor assembly of automobiles, workers typically use clamps to hold and weld the front floor. However, these clamps only hold the front floor panels; when welding other parts to the front floor body, manual support is still required to ensure the stability of the welding process. This is inconvenient, inefficient, and lacks precision. Therefore, designing a stable and reliable clamping fixture for the front floor assembly is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] To overcome the aforementioned drawbacks of existing technologies, we propose a welding positioning fixture for the front floor assembly of new energy vehicles.

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

[0006] A welding positioning fixture for a front floor assembly of a new energy vehicle includes a welding worktable 10. A first clamping and positioning device 1 for clamping the right end of the front floor assembly 8 is installed at the right edge of the welding worktable 10. A second clamping and positioning device 2 and a third clamping and positioning device 3 for clamping the front end of the front floor assembly 8 are sequentially installed from left to right on the inner front side of the first clamping and positioning device 1. A fourth clamping and positioning device 4 for clamping the left end of the front floor assembly 8 is installed at the left edge of the welding worktable 10. The sixth clamping and positioning device 6 and the fifth clamping and positioning device 5, which hold the rear end of the front floor assembly 8, are installed sequentially from left to right on the inner side of the rear part; the first positioning device 7 is installed at the center of the welding workbench 10; the top of the third clamping and positioning device 3 and the top of the fifth clamping and positioning device 5 are connected by a first clamping beam 11, and the second clamping and positioning device 2 and the sixth clamping and positioning device 6 are connected by a second clamping beam 21; the bottom of the first clamping beam 11 and the second clamping beam 21 are both connected by several upper clamping platform limiting blocks 12.

[0007] In a further improvement, the first positioning device 7 includes a first base 70, on which a first unit positioning structure 71, a second positioning unit 72 and a third positioning unit 73 are fixed sequentially from left to right.

[0008] The first unit positioning structure 71 includes a first L-shaped seat 711, a first connecting platform 712 fixedly attached to the first L-shaped seat 711, and a limiting pin assembly for positioning the front seat rear crossbeam assembly 89 of the front floor assembly 8 and a limiting block assembly for limiting the front seat rear crossbeam assembly 89 of the front floor assembly 8. The limiting pin assembly includes three positioning pins 713 arranged in a triangular pattern, and the limiting block assembly includes three limiting blocks (714) arranged in a triangular pattern.

[0009] The second positioning unit 72 includes a second L-shaped base 721, which is fixedly connected to a second connecting platform 722. Supporting fork blocks 723 are fixedly attached to the left and right sides of the top of the second connecting platform 722, and a first limiter 724 is fixedly connected to the left side of the middle part.

[0010] The third positioning unit 73 includes a third L-shaped base 731, which is fixedly connected to a third connecting platform 732; a support block 733 is fixed on each of the left and right sides of the front and rear ends of the third connecting platform 732; and a second limiter 734 is installed on the outer end of the support block 733.

[0011] Both the limiting block (714) and the supporting block 733 are in close contact with the upper concave wall of the rear crossbeam assembly 89 after the front seat is installed.

[0012] Further improvements include the following: the first clamping and positioning device 1 and the fourth clamping and positioning device 4 have the same structure; the second clamping and positioning device 2, the third clamping and positioning device 3, the sixth clamping and positioning device 6 and the fifth clamping and positioning device 5 have the same structure; the third clamping and positioning device 3 and the fifth clamping and positioning device 5 are symmetrically arranged, and the second clamping and positioning device 2 and the sixth clamping and positioning device 6 are symmetrically arranged.

[0013] In a further improvement, the third clamping and positioning device 3 includes a third base 30, a fourth L-shaped seat 31 is installed at the inner end of the third base 30, and a fifth L-shaped seat 32 is installed at the outer end;

[0014] The fourth L-shaped seat 31 is connected to a fourth connecting platform 311; the top two sides of the fourth connecting platform 311 are respectively fixed with bottom positioning pins 312 corresponding to the bottom pin holes of the right sill beam assembly 86 of the front floor assembly 8, and the top is fixed with a first lower clamping platform limiting member 313.

[0015] The fifth L-shaped seat 32 is connected to the fifth connecting platform 321. The lower part of the fifth connecting platform 321 is rotatably connected to the connector 322. The connector 322 is fixedly connected to the lower end of the first clamping arm 323. The rotating handle 324 passes through the first clamping arm 323 and is threadedly connected to the fifth connecting platform 321. The upper part of the clamping arm 3 is fixed with a side positioning pin 325 corresponding to the side pin hole of the right sill beam assembly 86 of the front floor assembly 8 and a side clamping limiter 326 that limits the side of the lower longitudinal beam on the right side of the front floor.

[0016] In a further improvement, a connecting rod 327 is connected to the top of the first clamping arm 323, and the connecting rod 327 forms a plurality of connecting holes 328 from top to bottom; the connecting rod 327 is fixedly connected to the first clamping beam 11 through the connecting holes 328.

[0017] In a further improvement, the fourth clamping and positioning device 4 includes a fourth base 41, on which five positioning structures are sequentially fixed along the length direction; each positioning structure includes a sixth L-shaped base 411, on which a second clamping arm 412 is fixedly connected, a lower clamping block 413 is fixedly connected to the lower part of the second clamping arm 412, and a handle 414 is rotatably connected to the upper part.

[0018] It is connected to the upper clamping block 415.

[0019] As a further improvement, a positioner 416 is fixed on the second clamping arm 412 of the positioning structure at both ends, and a second positioning pin 417 is fixed on the second clamping arm 412 of the positioning structure in the middle.

[0020] As a further improvement, the bottom of the welding workbench 10 is equipped with casters 101, and a braking device 102 is installed on the casters 101.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model is a welding positioning fixture for the front floor assembly of new energy vehicles. It has an ingenious structure, reasonable design, and simple operation. By pre-setting multiple clamping and fixing positions for the front floor assembly, it can achieve precise welding of the front floor assembly of new energy vehicles. It can prevent the parts from being placed incorrectly, reduce the labor intensity of workers, improve the work efficiency of workers, and ensure the quality of the welded finished product, making the product more stable and reliable.

[0023] 2. This utility model features a cleverly designed universal wheel structure, which facilitates the movement of the workbench by workers. It can be pushed and used at any time, and placed in a designated area when not in use. This avoids safety issues caused by excessive stepping or entanglement of the welding torch, optimizes human-machine interaction, reflects the requirements of flexibility and standardization in modern factories, and can keep the site clean, reduce space waste, and meet the requirements of lean production and "6S" standards.

[0024] 3. This utility model, through a reasonable spatial arrangement, enables each fixture to present a symmetrical structure on the worktable, optimizing the spatial layout, simplifying the structural design, ensuring the welding quality of the front floor assembly, while also being simple to manufacture, saving raw materials, and demonstrating the advantages of being clean and environmentally friendly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the welding positioning fixture for the front floor assembly of a new energy vehicle according to this utility model.

[0026] Figure 2 This is a top view of the welding positioning fixture for the front floor assembly of a new energy vehicle according to this utility model.

[0027] Figure 3 This is a schematic diagram of the structure of the welding positioning fixture of the present invention used in the front floor assembly of new energy vehicles.

[0028] Figure 4 This is a schematic diagram of the front floor assembly of a car.

[0029] Figure 5 This is a schematic diagram of the first positioning device.

[0030] Figure 6 This is a schematic diagram of the actual structure of the first positioning device.

[0031] Figure 7 This is a schematic diagram of the third clamping and positioning device.

[0032] Figure 8 This is a schematic diagram of the actual structure of the third clamping and positioning device.

[0033] Figure 9 This is a schematic diagram of the fourth clamping and positioning device.

[0034] Figure 10 This is a schematic diagram of the actual structure of the fourth clamping and positioning device.

[0035] The components include: a first clamping and positioning device 1, a second clamping and positioning device 2, a second clamping crossbeam 21, a third clamping and positioning device 3, a third base 30, a fourth L-shaped base 31, a fourth connecting platform 311, a bottom positioning pin 312, a first lower clamping platform limiting member 313, a fifth L-shaped base 32, a fifth connecting platform 321, a connector 322, a first pressing arm 323, a rotating handle 324, a side positioning pin 325, a side clamping platform limiting member 326, a connecting rod 327, a connecting hole 328, a fourth clamping and positioning device 4, a fourth base 41, a sixth L-shaped base 411, a second pressing arm 412, a lower clamping block 413, a handle 414, an upper clamping block 415, a positioner 416, a second positioning pin 417, a fifth clamping and positioning device 5, a sixth clamping and positioning device 6, a first positioning device 7, a first base 70, and a first unit positioning structure 71. 711 L-shaped seat, 712 first connecting platform, 713 positioning pin, 714 limiting block, 72 second positioning unit, 721 second L-shaped seat, 722 second connecting platform, 723 supporting fork block, 724 first limiter, 73 third positioning unit, 731 third L-shaped seat, 732 third connecting platform, 733 supporting block, 734 second limiter, 8 front floor assembly, 81 left sill side beam assembly, 82 left front floor, 83 center console mounting plate welding assembly, 84 front floor middle section assembly, 85 right front floor, 86 right sill side beam assembly, 87 front crossbeam assembly for front seat installation, 88 right front floor reinforcing beam assembly, 89 front seat rear crossbeam assembly for front seat installation, 810 left front floor reinforcing beam assembly, 10 welding workbench, 101 caster wheel, 102 braking device, 11 first clamping crossbeam, 12 upper clamping platform limiting block. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0037] Example 1:

[0038] like Figure 1-3 As shown, this utility model provides a welding positioning fixture for the front floor assembly of new energy vehicles. Figure 4This utility model relates to a positioning fixture for welding the front floor assembly of a new energy vehicle. The utility model includes casters, a braking device, a welding worktable, and clamping and positioning devices mounted on various bases. Four casters are installed directly below the four corners of the worktable, with two casters on the same side each equipped with a braking device. The clamping and positioning devices include a first clamping and positioning device located at the upper edge of the movable welding worktable, a second clamping and positioning device located on the upper right side of the movable welding worktable, a third clamping and positioning device located on the lower right side of the movable welding worktable, a fourth clamping and positioning device located at the lower edge of the movable welding worktable, a sixth clamping and positioning device located on the upper left side of the movable welding worktable, and a fifth clamping and positioning device located on the lower left side of the movable welding worktable. A first positioning device is located at the center of the movable welding worktable. The third and fifth clamping and positioning devices have the same structure and are symmetrical about the worktable. The second and sixth clamping and positioning devices also have the same structure and are symmetrical about the worktable. The first clamping and positioning device is the same as the fourth clamping and positioning device, except that the positions of the corresponding clamping block assembly and positioning pin assembly are adaptively changed when clamping and positioning different front floor components.

[0039] like Figure 5 , 6 As shown, the first positioning device includes a base and three unit positioning structures, each with the same composition, including an L-shaped base, a connecting platform, a limiting pin, a limiter, a limiting pin assembly, a limiting block assembly, and a supporting fork block or supporting block assembly. The L-shaped base is connected to the worktable via bolts, and the connecting platform is connected to the L-shaped base via bolts. The connecting platform is bolted with limiting pins or limiters, and limiting blocks or supporting fork blocks of different sizes. Multiple limiting pins or limiters form a limiting pin assembly, and multiple limiting blocks or supporting fork blocks form a limiting block assembly or supporting fork block assembly. The limiting pin assembly of the left-side first unit positioning structure is connected to the crossbeam after the front seat is installed. The front floor under-rear reinforcing crossbeam of assembly 89 is connected and fixed to the middle section of the front floor, and the front floor under-rear reinforcing crossbeam of the front seat mounting assembly 89 is limited and supported by the limiting block assembly; the middle second unit positioning structure is connected and fixed to the drive shaft support through the limiter, and the supporting fork block supports the drive shaft support; the right third unit positioning structure is fixed to the front floor under-reinforcing crossbeam of the front seat mounting assembly 87 and the middle section of the front floor of the front floor assembly 84 through the limiting pin assembly, and the front floor under-reinforcing crossbeam of the front seat mounting assembly 87 is limited and supported by the limiting block assembly.

[0040] like Figure 7 , 8As shown, the third clamping and positioning device includes a base and two unit positioning structures. The left unit positioning structure includes an L-shaped base, a connecting platform, a set of limit pins, and a clamping platform limit block. The right unit positioning structure includes an L-shaped base, a connector, a clamping arm, limit pins, a clamping platform limit assembly, and a rotating handle. In the left unit positioning structure, the L-shaped base is connected to the base and the worktable by bolts, the connecting platform is connected to the L-shaped base by bolts, and limit and clamping platform limit blocks of different specifications and sizes are connected to the connecting platform by bolts. Multiple limit pins form a set of limit pins. In the right unit positioning structure, the L-shaped base is connected to the base and the worktable by bolts, the upper part of the L-shaped base is connected to the clamping arm by bolts, the connector is connected to the clamping arm by bolts, the rotating handle below the clamping arm is fastened to the clamping arm by threads, and the limit pin on the clamping arm is connected to the clamping arm by bolts. The left unit positioning structure fixes the right-side reinforcing crossbeam of the front floor of the front seat rear crossbeam assembly 89 with a limit pin assembly, and clamps and limits the right-side reinforcing crossbeam of the front floor of the front seat rear crossbeam assembly 89 and the right-side lower longitudinal beam of the front floor of the right front floor reinforcing beam assembly 88 with a clamping limit assembly. The right unit positioning structure first fixes the right-side reinforcing crossbeam of the front floor of the front seat rear crossbeam assembly 89 with a limit pin assembly, loosens the rotating handle to open the clamping arm by rotating the connector, and then clamps and fixes the right sill side beam assembly with a limit pin assembly. Tightening the rotating handle fixes the right sill side beam assembly with a clamping limit block on the clamping arm.

[0041] like Figure 9 , 10As shown, the fourth clamping and positioning device includes a base and five unit positioning structures. Each unit positioning structure has the same composition, including an L-shaped base, a clamping arm, a positioning pin, a positioner, a handle, an upper clamping block, and a lower clamping block. The upper and lower clamping blocks form a clamping block group. The L-shaped base is connected to the worktable by bolts. The upper part of the L-shaped base is connected to the clamping arm by bolts. The lower part of the clamping arm is connected to the lower clamping block by bolts. The upper part of the clamping arm is connected to the upper clamping block by bolts. The upper and lower parts of the clamping arm are rotatably connected by a connector, so that the clamping arm can be moved by the handle. The left first unit positioning structure raises the upper clamping block on the clamping arm by pulling the handle and rotating the connector, thus fixing the left front floor through the locator. Pulling the handle again lowers the upper clamping block, and the upper and lower clamping blocks work together to clamp and fix the left front floor 82. The right first unit positioning structure raises the upper clamping block on the clamping arm by pulling the handle and rotating the connector, thus fixing the right front floor 85 through the locator. Pulling the handle again lowers the upper clamping block, and the upper and lower clamping blocks work together to clamp and fix the right front floor. The middle unit positioning structure raises the upper clamping block on the clamping arm by pulling the handle and rotating the connector, thus fixing the middle section of the front floor assembly 84 through the locating pin. Pulling the handle again lowers the upper clamping block, and the upper and lower clamping blocks work together to clamp and fix the middle section of the front floor. Finally, pulling the handles of the left second unit positioning structure and the right second unit positioning structure simultaneously lowers the upper clamping block, and the upper and lower clamping blocks work together to clamp and fix the end of the middle section of the front floor.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding positioning fixture for the front floor assembly of a new energy vehicle, characterized in that: The welding workbench (10) includes a welding workbench (10), on which a first clamping and positioning device (1) for clamping the right end of the front floor assembly (8) is installed at the right edge. A second clamping and positioning device (2) and a third clamping and positioning device (3) for clamping the front end of the front floor assembly (8) are sequentially installed on the inner front side of the first clamping and positioning device (1) from left to right. A fourth clamping and positioning device (4) for clamping the left end of the front floor assembly (8) is installed at the left edge of the welding workbench (10). The inner rear side of the first clamping and positioning device (1) is sequentially installed with... The sixth clamping positioning device (6) and the fifth clamping positioning device (5) are installed at the rear end of the front floor assembly (8); the first positioning device (7) is installed at the center of the welding workbench (10); the top of the third clamping positioning device (3) is connected to the top of the fifth clamping positioning device (5) and the second clamping positioning device (2) is connected to the sixth clamping positioning device (6); the bottom of the first clamping positioning device (11) and the second clamping positioning device (21) are connected to several upper clamping platform limiting blocks (12).

2. The welding positioning fixture for the front floor assembly of new energy vehicles as described in claim 1, characterized in that: The first positioning device (7) includes a first base (70), on which a first unit positioning structure (71), a second positioning unit (72) and a third positioning unit (73) are fixed from left to right. The first unit positioning structure (71) includes a first L-shaped seat (711), the first L-shaped seat (711) is fixed with a first connecting platform (712), the first connecting platform (712) is fixedly connected with a set of limiting pins for positioning the front seat rear crossbeam assembly (89) of the front floor assembly (8) and a set of limiting blocks for limiting the front seat rear crossbeam assembly (89) of the front floor assembly (8); the set of limiting pins includes three positioning pins (713) arranged in a triangle, and the set of limiting blocks includes three limiting blocks (714) arranged in a triangle; The second positioning unit (72) includes a second L-shaped base (721), which is fixedly connected to a second connecting platform (722). Supporting fork blocks (723) are fixed on the top left and right sides of the second connecting platform (722), and a first limiter (724) is fixedly connected to the middle left side. The third positioning unit (73) includes a third L-shaped base (731), which is fixedly connected to a third connecting platform (732); a support block (733) is fixed on the left and right sides of the front and rear ends of the third connecting platform (732); a second limiter (734) is installed on the outer end of the support block (733). Both the limiting block (714) and the supporting block (733) are in close contact with the upper concave wall of the crossbeam assembly (89) after the front seat is installed.

3. The welding positioning fixture for the front floor assembly of new energy vehicles as described in claim 1, characterized in that: The first clamping positioning device (1) and the fourth clamping positioning device (4) have the same structure; the second clamping positioning device (2), the third clamping positioning device (3), the sixth clamping positioning device (6) and the fifth clamping positioning device (5) have the same structure; the third clamping positioning device (3) and the fifth clamping positioning device (5) are symmetrically arranged, and the second clamping positioning device (2) and the sixth clamping positioning device (6) are symmetrically arranged.

4. The welding positioning fixture for the front floor assembly of new energy vehicles as described in claim 3, characterized in that: The third clamping and positioning device (3) includes a third base (30), a fourth L-shaped seat (31) is installed at the inner end of the third base (30), and a fifth L-shaped seat (32) is installed at the outer end. The fourth L-shaped seat (31) is connected to the fourth connecting platform (311); the top two sides of the fourth connecting platform (311) are respectively fixed with bottom positioning pins (312) corresponding to the bottom pin holes of the right sill beam assembly (86) of the front floor assembly (8), and the top is fixed with the first lower clamping platform limiting piece (313). The fifth L-shaped seat (32) is connected to the fifth connecting platform (321). The lower part of the fifth connecting platform (321) is rotatably connected to the connector (322). The connector (322) is fixedly connected to the lower end of the first clamping arm (323). The rotating handle (324) passes through the first clamping arm (323) and is threadedly connected to the fifth connecting platform (321). The upper part of the first clamping arm (323) is fixed with a side positioning pin (325) corresponding to the side pin hole of the right sill beam assembly (86) of the front floor assembly (8) and a side clamping platform limiting piece (326) that limits the side of the lower longitudinal beam on the right side of the front floor.

5. The welding positioning fixture for the front floor assembly of new energy vehicles as described in claim 4, characterized in that: The first clamping arm (323) is connected to a connecting rod (327) at the top, and the connecting rod (327) forms several connecting holes (328) from top to bottom; the connecting rod (327) is fixedly connected to the first clamping beam (11) through the connecting holes (328).

6. The welding positioning fixture for the front floor assembly of new energy vehicles as described in claim 3, characterized in that: The fourth clamping and positioning device (4) includes a fourth base (41), on which five positioning structures are fixed sequentially along the length direction; the positioning structure includes a sixth L-shaped seat (411), on which a second clamping arm (412) is fixedly connected, and a lower clamping block (413) is fixedly connected to the lower part of the second clamping arm (412), and a handle (414) is rotatably connected to the upper part. It is connected to an upper clamping block (415).

7. The welding positioning fixture for the front floor assembly of new energy vehicles as described in claim 6, characterized in that: Positioners (416) are fixed on the second clamping arms (412) of the positioning structure at both ends, and a second positioning pin (417) is fixed on the second clamping arm (412) of the positioning structure in the middle.

8. The welding positioning fixture for the front floor assembly of new energy vehicles as described in any one of claims 1-7, characterized in that: The bottom of the welding workbench (10) is equipped with casters (101), and a braking device (102) is installed on the casters (101).

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