A kind of set pair welding tool of EMU car body manufacturing end chassis

Abstract

The utility model discloses a kind of assembly and aligning welding tool of EMU car body manufacturing end underframe, including main support, front support, tail support;Symmetrically arranged in the bottom support and side support of main support;Main support is provided with side plate;The outer side of side support and side plate is respectively fixed with first support station and second support station, the upper end of the leg of first support station and second support station is support surface;The length direction of workpiece two ends is respectively supported by the support surface of tool two sides, and four support surfaces of tool two sides are located in the same plane;First support station and second support station are all machined with mounting hole, and mounting hole and the machining hole of piece to be machined one-to-one correspondence.The rigidity and stability of the tool of the utility model are good, and the overall structure is simple, and the manufacturing cost is low;And first support station and second support station on the side support and side plate of tool are located in the same plane, workpiece is supported on first support station and second support station by leg during welding process, and eight holes are uniformly limited by matching mounting hole and limiting rod.

Description

Technical Field

[0001] This utility model relates to the field of EMU car body manufacturing technology, and in particular to a welding fixture for assembling the underframe of an EMU car body manufacturing end. Background Technology

[0002] The manufacturing of a high-speed train body is a complex process involving various materials, processes, and technologies to ensure high strength, lightweight, and good aerodynamic performance. One crucial step in the manufacturing process is the end frame assembly. The end frame is constructed by welding profiles together. During welding, a sewage tank is suspended beneath the four mounting seats of the end frame. However, the four mounting seats at the connection point between the sewage tank and the end frame must be on the same plane, and each of the four mounting seats has two holes on each plane—a total of eight holes across four planes—to suspend the sewage tank. In actual manufacturing, the welding stress during the profile assembly of the end frame assembly affects the process, causing deformation. However, there is currently no dedicated tooling for welding the end frame.

[0003] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a welding fixture for assembling the underframe of the EMU car body manufacturing end. Utility Model Content

[0004] The purpose of this utility model is to provide a welding fixture for the assembly of the underframe of a high-speed train body. The fixture has good overall rigidity and stability, and its overall structure is simple and the manufacturing cost is low. The side support of the fixture and the first and second supports on the side plate are located on the same plane. During the welding process, the workpiece is supported on the first and second supports by the legs, and the mounting holes and limiting rods are used to uniformly limit the eight holes, forming a fixture structure with the same structure as the sewage tank. It is used in conjunction with the welding to ensure that the installation plane and hole spacing of the sewage tank meet the requirements.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses an assembly and welding fixture for the underframe of a high-speed train body manufacturing process, which includes:

[0007] Main support;

[0008] A front bracket is respectively installed at the front end of the main bracket and a tail bracket is respectively installed at the rear end of the main bracket;

[0009] A bottom support is symmetrically arranged at one end of the main support near the front support, and a side support is fixed to the top of the bottom support;

[0010] The main support has side plates symmetrically arranged on the side near the tail support;

[0011] The outer surfaces of the side support and the side plate are respectively fixed with a first support and a second support. Both the first support and the second support are provided with upwardly extending legs, and the upper end of the legs is a support surface.

[0012] The two ends of the workpiece to be processed along its length are supported by the support surfaces on both sides of the tooling, and the four support surfaces on both sides of the tooling are located on the same plane.

[0013] Both the first support and the second support are machined with mounting holes, and the mounting holes correspond one-to-one with the machining holes of the workpiece.

[0014] Furthermore, an inclined plate support is provided between the bottom support and the main bracket, and a bottom support plate is installed between the bottoms of the bottom supports on both sides.

[0015] Furthermore, a top inclined plate is fixed at the position where the main bracket and the side support cooperate, and the side support is installed at the bottom of the top inclined plate;

[0016] A reinforcing frame is provided between the side support and the main support.

[0017] Furthermore, the central area of ​​the top sloping plate is a hollow section;

[0018] The front and rear sides of the top inclined plate are connected by multiple support columns to square blocks that are parallel to the corresponding positions of the top inclined plate.

[0019] Furthermore, the front bracket is fixedly connected to the bottom support plate, and the length of the front bracket is greater than the width of the main bracket;

[0020] The front support is configured as a profile structure with multiple internal cavities.

[0021] Furthermore, limit supports are provided between the two ends of the tail bracket and the main bracket, and a tail plate is fixed at the bottom of the tail bracket, with the tail plate supported on the ground.

[0022] Furthermore, the lower part of the tail support is hinged with a limiting support, and the limiting support can be flipped toward the rear side of the tooling to adjust the angle with the tail support and support the ground.

[0023] Furthermore, limit rods are installed in the mounting holes of both the first support and the second support;

[0024] The support is provided with legs on both sides along the length of the support, and the legs extend upward at an angle to support the top support surface.

[0025] In the above technical solution, the assembly and welding fixture for the underframe of the EMU car body manufacturing end provided by this utility model has the following beneficial effects:

[0026] The tooling of this utility model has good overall rigidity and stability, and its overall structure is simple and has low manufacturing cost. Moreover, the side support of the tooling and the first and second supports on the side plate are located on the same plane. During the welding process, the workpiece is supported on the first and second supports by the legs, and the mounting holes and limit rods are used to uniformly limit the eight holes, forming a tooling structure with the same structure as the sewage tank. It is used in conjunction with the welding to ensure that the installation plane and hole spacing of the sewage tank meet the requirements. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 This is a schematic diagram of the assembly and welding fixture for the underframe of a high-speed train body manufacturing plant, as disclosed in an embodiment of the present invention.

[0029] Figure 2 This is a front view of a welding fixture for the assembly of the underframe of a high-speed train body, as disclosed in an embodiment of this utility model.

[0030] Figure 3 This is a top view of a welding fixture for the manufacturing end frame of a high-speed train body, as disclosed in an embodiment of this utility model.

[0031] Figure 4 This is a side view of a welding fixture for the assembly of the underframe of a high-speed train body, as disclosed in an embodiment of this utility model.

[0032] Figure 5 This is an exploded view of the assembly and welding fixture for the underframe of a high-speed train body manufacturing plant, as disclosed in an embodiment of this utility model.

[0033] Figure 6 This is a partially enlarged view of a welding fixture for assembling the underframe of a high-speed train body, as disclosed in an embodiment of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Main support; 2. Bottom support; 3. Inclined plate support; 4. Bottom support plate; 5. Side support; 6. Top inclined plate; 7. Side plate; 8. First support platform; 9. Second support platform; 10. Mounting hole; 11. Limiting rod; 12. Support leg; 13. Workpiece; 14. Reinforcing frame; 15. Front support; 16. Support column; 17. Square block; 18. Tail plate; 19. Tail support; 20. Auxiliary support; 21. Limiting support. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0037] See Figures 1 to 6 As shown;

[0038] This embodiment provides a welding fixture for assembling and welding the underframe of a high-speed train body manufacturing end. The welding fixture includes:

[0039] Main support 1;

[0040] The front bracket 15 is respectively installed at the front end of the main bracket 1 and the tail bracket 19 is respectively installed at the rear end of the main bracket 1;

[0041] The bottom support 2 is symmetrically arranged at one end of the main support 1 near the front support 15, and the top of the bottom support 2 is fixed with a side support 5.

[0042] Side plates 7 are symmetrically arranged on the side of the main support 1 near the tail support 19;

[0043] The outer sides of the side support 5 and the side plate 7 are respectively fixed with the first support 8 and the second support 9. The first support 8 and the second support 9 are both provided with upwardly extending legs 12, and the upper end of the legs 12 is the support surface.

[0044] The two ends of the workpiece 13 to be processed along its length are supported by the support surfaces on both sides of the tooling, and the four support surfaces on both sides of the tooling are located on the same plane.

[0045] Both the first support 8 and the second support 9 are machined with mounting holes 10, and the mounting holes 10 correspond one-to-one with the machining holes of the workpiece to be machined.

[0046] Specifically, this embodiment discloses a welding fixture for the assembly of the underframe of a high-speed train body. The fixture in this embodiment uses a first support 8 and a second support 9 on both sides to form a horizontal support surface, which supports the workpiece. Simultaneously, the fixture in this embodiment is constructed with the same structure as a sewage tank through the structure between the first support 8 and the second support 9, and they are used together during assembly welding to ensure that the installation plane and hole spacing of the sewage tank meet the requirements. The specific structure is as follows: the main body of the fixture in this embodiment is a main support 1, with a front support 15 and a rear support 19 respectively provided at the front and rear of the main support 1; at the same time, based on the main support 1, a bottom support 2 is provided in front of the main support 1 and the front support 15, and a side support 5 is fixed on the outer side of the bottom support 2. Meanwhile, a side plate 7 is provided on the side between the main support 1 and the tail support 19 in this embodiment. The first support 8 and the second support 9 mentioned above are integrated through the side support 5 and the side plate 7. Thus, two first supports 8 and two second supports 9 are provided on both sides of the tooling. At the same time, the support surfaces at the upper ends of the first support 8 and the second support 9 in this embodiment are flush, thereby constructing a support surface that can support the workpiece. In order to control the hole spacing of the workpiece 13, the first support 8 and the second support 9 in this embodiment are pre-machined with mounting holes 10 that are consistent with the hole spacing of the workpiece 13.

[0047] Preferably, in this embodiment, an inclined plate support 3 is provided between the bottom support 2 and the main bracket 1, and a bottom support plate 4 is installed between the bottoms of the bottom supports 2 on both sides.

[0048] Preferably, in this embodiment, a top inclined plate 6 is fixed at the position where the main support 1 and the side support 5 cooperate, and the side support 5 is installed at the bottom of the top inclined plate 6; in order to further improve the structural stability, a reinforcing frame 14 is provided between the side support 5 and the main support 1 in this embodiment.

[0049] This embodiment further defines the structure of the bottom support 2, which is connected to the main support 1 through the inclined plate support 3, and a bottom support plate 4 is provided at the bottom to increase the contact area with the ground. Meanwhile, a top inclined plate 6 is provided above the side support 5 in this embodiment.

[0050] Preferably, the central region of the top inclined plate 6 in this embodiment is a hollowed-out portion; wherein, the front and rear sides of the top inclined plate 6 in this embodiment are connected by multiple support columns 16 to square blocks 17 parallel to the corresponding positions of the top inclined plate 6. In this embodiment, the tail bracket 19, the support columns 16 and the square blocks 17 on the top inclined plate 6 cooperate with each other to form a limiting recessed structure on the main bracket 1, and the workpiece 13 is positioned, supported and fixed by the recessed structure and the support platform.

[0051] More preferably, in this embodiment, limit rods 11 are installed in the mounting holes 10 of the first support 8 and the second support 9; support legs 12 are provided on both sides of the support in the length direction, and the support legs 12 extend upward at an angle to support the top support surface.

[0052] Preferably, in this embodiment, the front bracket 15 is fixedly connected to the bottom support plate 4, and the length of the front bracket 15 is greater than the width of the main bracket 1; the front bracket 15 is configured as a profile structure with multiple cavities inside.

[0053] In this embodiment, the tail support 19 has limit supports 21 at both ends between it and the main support 1, and the tail plate 18 is fixed to the bottom of the tail support 19 and is supported on the ground. In addition, the lower part of the tail support 19 is hinged to the limit support 21, and the limit support 21 can be flipped toward the rear of the tooling to adjust the angle with the tail support 19 and be supported on the ground.

[0054] In use, the main support 1 of this embodiment serves as the primary support structure for the side supports 5 and side plates 7. It is supplemented by the support columns 16 and square blocks 17 on the top inclined plate 6, as well as the tail support 19 and tail plate 18 for auxiliary limiting support. The entire structure, through the built-in inclined plate support 3 and reinforcing frame 14 as internal reinforcing ribs, ensures overall rigidity and stability. The overall structure is simple and has low manufacturing cost. Meanwhile, the first support platform 8 and the second support platform 9 are located on the same plane. During welding, the workpiece is supported above the support platform by the support surface, and the mounting holes 10 and limiting rods 11 uniformly limit the eight holes, forming a tooling structure with the same structure as the sewage tank. These are used together during assembly welding to ensure that the sewage tank's mounting plane and hole spacing meet the requirements.

[0055] In the above technical solution, the assembly and welding fixture for the underframe of the EMU car body manufacturing end provided by this utility model has the following beneficial effects:

[0056] The tooling of this utility model has good overall rigidity and stability, and its overall structure is simple and has low manufacturing cost. Moreover, the side support 5 and the first support 8 and the second support 9 on the side plate 7 are located on the same plane. During the welding process, the workpiece is supported on the first support 8 and the second support 9 by the support leg 12, and the mounting hole 10 and the limiting rod 11 are used to uniformly limit the eight holes, forming a tooling structure with the same structure as the sewage tank. It is used in conjunction with the welding to ensure that the installation plane and hole spacing of the sewage tank meet the requirements.

[0057] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A welding fixture for assembling the underframe of a high-speed train body manufacturing plant, characterized in that, This set of welding fixtures includes: Main support (1); A front bracket (15) is respectively installed at the front end of the main bracket (1) and a tail bracket (19) is respectively installed at the rear end of the main bracket (1); A bottom support (2) is symmetrically arranged at one end of the main support (1) near the front support (15), and a side support (5) is fixed to the top of the bottom support (2); The main support (1) has side plates (7) symmetrically arranged on the side near the tail support (19); The outer surfaces of the side support (5) and the side plate (7) are respectively fixed with a first support (8) and a second support (9). Both the first support (8) and the second support (9) are provided with upwardly extending legs (12), and the upper end of the legs (12) is a support surface. The two ends of the workpiece (13) to be processed are supported by the support surfaces on both sides of the tooling, and the four support surfaces on both sides of the tooling are located on the same plane. Both the first support (8) and the second support (9) are machined with mounting holes (10), and the mounting holes (10) correspond one-to-one with the machining holes of the workpiece to be machined.

2. The assembly and welding fixture for the underframe of a high-speed train body manufacturing plant according to claim 1, characterized in that, An inclined plate support (3) is provided between the bottom support (2) and the main support (1), and a bottom support plate (4) is installed between the bottoms of the bottom supports (2) on both sides.

3. The assembly and welding fixture for the underframe of a high-speed train body manufacturing plant according to claim 1, characterized in that, The main support (1) is fixed with a top inclined plate (6) at the position where it cooperates with the side support (5), and the side support (5) is installed at the bottom of the top inclined plate (6); A reinforcing frame (14) is provided between the side support (5) and the main support (1).

4. The assembly and welding fixture for the underframe of a high-speed train body manufacturing plant according to claim 3, characterized in that, The central area of ​​the top inclined plate (6) is a hollow part; The front and rear sides of the top inclined plate (6) are connected by multiple support columns (16) to square blocks (17) that are parallel to the corresponding positions of the top inclined plate (6).

5. The assembly and welding fixture for the underframe of a high-speed train body manufacturing plant according to claim 2, characterized in that, The front bracket (15) is fixedly connected to the bottom support plate (4), and the length of the front bracket (15) is greater than the width of the main bracket (1); The front support (15) is configured as a profile structure with multiple cavities inside.

6. The assembly and welding fixture for the underframe of a high-speed train body manufacturing plant according to claim 1, characterized in that, Limit supports (21) are provided between the two ends of the tail support (19) and the main support (1), and a tail plate (18) is fixed at the bottom of the tail support (19), and the tail plate (18) is supported on the ground.

7. The assembly and welding fixture for the underframe of a high-speed train body manufacturing plant according to claim 6, characterized in that, The lower part of the tail support (19) is hinged to a limiting support (21), and the limiting support (21) can be flipped toward the rear side of the tooling to adjust the angle with the tail support (19) and support the ground.

8. The assembly and welding fixture for the underframe of a high-speed train body manufacturing plant according to claim 1, characterized in that, Limiting rods (11) are installed in the mounting holes (10) of both the first support (8) and the second support (9); The support legs (12) are provided on both sides of the support along the length direction, and the support legs (12) extend upward at an angle to support the top support surface.

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