Auxiliary tool for welding horizontal section of main girder pipe

Abstract

This utility model relates to an auxiliary tooling for welding the horizontal section of a main beam pipe, including a worktable. A head pipe fixing bracket is installed at the front end of the worktable, and a horizontal section support bracket is installed at the rear end. A nameplate base positioning bracket and a positioning bracket for the bottom bracket welding assembly are also installed on the worktable. After the nameplate base is placed on the nameplate base positioning bracket, the head pipe fixing bracket and the horizontal section support bracket can quickly and initially position the assembly welded to the main beam pipe. During this positioning process, only the head pipe needs to be fitted onto the first limiting post, and the horizontal section pressed into the notch, allowing for automated clamping by the first, first, and second clamping cylinders. One person can complete the positioning work without assistance, resulting in high efficiency.

Description

Technical Field

[0001] This utility model relates to a rapid welding technology for electric vehicle frame parts, specifically a tooling for positioning the main beam tube, nameplate bases, and bottom bracket welding components to facilitate welding. Background Technology

[0002] like Figure 1 As shown, the main beam tube includes a first section and a second section. The angle between the first section and the second section is greater than 90 degrees. For ease of description, the first section is referred to as the inclined tube 35, and the second section is referred to as the horizontal section 36. The nameplate base and the bottom bracket welding assembly need to be welded on the horizontal section.

[0003] The horizontal section welding of the main beam pipe is the next step after the welding of the main beam pipe and the head pipe is completed. There is an acute angle between the first section pipe and the main beam pipe, and when the second section pipe is horizontal, the head pipe is in an inclined state, making it difficult to locate the center of gravity of the main beam pipe and the head pipe as a whole.

[0004] Manual stabilization is usually required for auxiliary positioning, which wastes manpower. Furthermore, manual assisted positioning suffers from poor stability and low efficiency.

[0005] Based on this, in order to reduce the labor intensity and improve work efficiency, an auxiliary tooling for welding the horizontal section of the main beam pipe was designed to improve positioning efficiency. Summary of the Invention

[0006] This utility model provides an auxiliary tooling for welding the horizontal section of the main beam tube. After the nameplate base is placed on the nameplate base positioning bracket, the head tube fixing bracket and the horizontal section support bracket can quickly perform preliminary positioning of the assembly after welding the head tube and the main beam tube. During this positioning process, it is only necessary to put the head tube on the first limiting post and press the horizontal section into the notch to automatically clamp the first cylinder, the first clamping cylinder, and the second clamping cylinder. One person can complete the positioning work without the assistance of others, which is highly efficient.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary tooling for welding the horizontal section of a main beam pipe, including a worktable, a head pipe fixing bracket installed at the front end of the worktable, a horizontal section support bracket installed at the rear end, and a nameplate base positioning bracket and a positioning bracket for the bottom bracket welding assembly also installed on the worktable.

[0008] Based on the above scheme, as a preferred embodiment, the head tube fixing bracket includes a base, the upper end surface of the base has a slope, a first connecting plate is fixedly installed on the slope, a first limiting post is fixedly installed on the upper end surface of the first connecting plate, a first vertical plate is fixedly installed on the first connecting plate, the cylinder body of the first cylinder is fixedly installed on the first vertical plate, the piston rod of the first cylinder is fixedly connected to a second connecting plate, a second limiting post is fixedly installed on the lower end surface of the second connecting plate, and the second connecting plate is arranged parallel to the first connecting plate.

[0009] Based on the above scheme, as a preferred embodiment, the second limiting post has the same structure as the first limiting post. The first limiting post is in the shape of a stepped shaft, including a first diameter segment and a second diameter segment fixedly connected to the upper end of the first diameter segment. The diameter of the first diameter segment is larger than the diameter of the second diameter segment.

[0010] The upper end of the first diameter segment of the first limiting post is fixedly connected to the lower end face of the first connecting plate, and the second limiting post is installed in the opposite direction to the first limiting post, with the first diameter segment of the second limiting post fixed to the second connecting plate.

[0011] Based on the above scheme, as a preferred option, a first limiting member is fixedly installed on the rear end face of the base. The first limiting member has a groove with a width the same as the diameter of the inclined tube of the main beam tube, and the length direction of the first limiting member is perpendicular to the axis of the inclined tube. The cylinder body of the first pressing cylinder is fixedly installed on the side of the base. The piston rod of the first pressing cylinder is fixedly connected to the first pressing block. When the inclined tube is located in the groove, the first pressing cylinder drives the first pressing member to press and fix the inclined tube and the first limiting member from the rear of the inclined tube.

[0012] Based on the above scheme, as a preferred embodiment, the connection between the nameplate base and the horizontal section is the first welding position, and the connection between the bottom bracket welding assembly and the horizontal section is the second welding position. The horizontal section support bracket includes a first bracket, a second bracket, and a second pressing cylinder arranged at intervals. The first bracket and the second bracket are located between the first welding position and the second welding position. The upper end of the first bracket and the second bracket has a notch, the depth of which is less than the diameter of the horizontal section. Part of the horizontal section is located inside the notch. The second pressing cylinder is located between the first bracket and the second bracket. The second pressing cylinder is fixed on the working platform. The extension and retraction direction of the extension rod of the second pressing cylinder is vertical. The upper end of the extension rod of the second pressing cylinder is fixedly connected to a second pressing block. After the horizontal section is placed in the notch, the second pressing cylinder drives the second pressing block to press the horizontal section into the notch from above.

[0013] Based on the above solution, as a preferred option, a nameplate base positioning bracket is fixedly installed on the workbench. After the nameplate base is placed in the nameplate base positioning bracket, the horizontal section is placed in the recess and contacts the nameplate base.

[0014] Based on the above solution, as a preferred option, the side of the nameplate base positioning bracket facing the horizontal section is an inclined surface. Both sides and the bottom of the upper surface of the nameplate base positioning bracket are fixedly installed with baffles, and the height of the baffles is less than the height of the nameplate base. The nameplate base has two small holes, and there are two positioning rods on the inclined surface. When the nameplate base is placed on the nameplate base positioning bracket, the positioning rods pass through the small holes.

[0015] Based on the above scheme, as a preferred embodiment, the five-way welding assembly includes a base fixed to the horizontal section for welding, and a first horizontal tube and a second horizontal tube fixed on the base and spaced apart front and back. The first horizontal tube positioning assembly is symmetrically installed on both sides of the second welding position. The first horizontal tube positioning assembly includes a fourth bracket fixed on the workbench. The cylinder body of the third pressing cylinder is fixedly installed on the fourth bracket. The piston rod of the fourth pressing cylinder is fixedly connected to the top clamping column. The top clamping column includes a large-diameter section and a small-diameter section fixedly connected to one end of the large-diameter section. The other end of the large-diameter section is fixedly connected to the piston rod of the fourth pressing cylinder.

[0016] Based on the above scheme, as a preferred option, the second horizontal tube is positioned using a second horizontal tube positioning assembly. The second horizontal tube positioning assembly includes a fifth bracket symmetrically arranged on both sides of the second welding position and a fifth pressing cylinder. The upper end of the fifth bracket has a notch, and both ends of the second horizontal tube are supported in the notch. The cylinder body of the fifth pressing cylinder is fixedly installed on the working platform, and a fifth pressing block is fixedly installed on the piston rod of the fifth pressing cylinder. After the second horizontal tube is placed on the base and both ends are located at the notch, the fifth pressing cylinder drives the fifth pressing block to move downward from above the second horizontal tube to press and fix the second horizontal tube.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] After the nameplate base is placed on the nameplate base positioning bracket, the assembly after the head tube and the main beam tube are welded can be quickly and initially positioned by the head tube fixing bracket and the horizontal section support bracket. During this positioning process, it is only necessary to put the head tube on the first limiting post and press the horizontal section into the notch to automatically clamp the first cylinder, the first clamping cylinder, and the second clamping cylinder. One person can complete the positioning work without the assistance of others, which is highly efficient.

[0019] The nameplate base is positioned using edge guards and positioning rods to prevent it from tilting on the nameplate base support.

[0020] The five-way welding assembly uses symmetrically arranged first and second horizontal tube positioning components for positioning, which can quickly position the base, first horizontal tube, and second horizontal tube on the horizontal section, making the positioning process convenient. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the main beam tube. Figure 1 ;

[0022] Figure 2 This is a three-dimensional representation of the present invention. Figure 1 ;

[0023] Figure 3 This is the main view of the utility model. Figure 1 ;

[0024] Figure 4 yes Figure 3 Top view;

[0025] Figure 5 This is a three-dimensional representation of the present invention. Figure 2 (Remove the head pipe and main beam pipe);

[0026] Figure 6 This is the main view of the utility model. Figure 2 (Remove the head pipe and main beam pipe);

[0027] Figure 7 yes Figure 3 A bird's-eye view Figure 2 (Remove the head pipe and main beam pipe);

[0028] Figure 8 This is a schematic diagram showing the connection between the nameplate base and the nameplate base positioning bracket;

[0029] Figure 9 This is a schematic diagram of the first horizontal tube positioning assembly. Detailed Implementation

[0030] The present invention will be further described below through embodiments, but the scope of the present invention is not limited thereto.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms first, second, third, etc., are only used to distinguish the function of the same components and do not constitute other specific limitations; left, right, front, and rear also refer only to relative positional relationships and do not constitute other specific limitations. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] like Figure 1-9 As shown, the auxiliary tooling for welding the horizontal section of the main beam tube is used to position the nameplate base and the bottom bracket welding assembly to facilitate subsequent welding. It includes a worktable 1, a head tube 34 fixing bracket installed at the front end of the worktable, and a horizontal section support bracket installed at the rear end.

[0033] The head tube fixing bracket includes a base 2, the upper end face of which has a slope, and the angle between the slope and the horizontal plane is the same as the angle between the head tube and the horizontal section.

[0034] A first connecting plate 3 is fixedly installed on the slope. A first limiting post 4 is fixedly installed on the upper surface of the first connecting plate. The first limiting post is in the shape of a stepped shaft, specifically including a first diameter segment and a second diameter segment fixedly connected to the upper end of the first diameter segment. The diameter of the first diameter segment is larger than the diameter of the second diameter segment. The upper end of the first diameter segment is fixedly connected to the lower end surface of the first connecting plate. There is a diameter difference between the second diameter segment and the first diameter segment to form a stepped surface. When positioning, the head tube is fitted onto the second diameter segment and abuts against the stepped surface.

[0035] The first vertical plate 5 is fixedly installed on the first connecting plate, and the cylinder body of the first cylinder 6 is fixedly installed on the first vertical plate. The piston rod of the first cylinder is fixedly connected to the second connecting plate 7. The second limiting post 8 is fixedly installed on the lower end face of the second connecting plate. The second limiting post has the same structure as the first limiting post (the lengths of the first diameter segment and the second diameter segment can be the same or different). The second connecting plate is arranged parallel to the first connecting plate. The first cylinder drives the second connecting plate to reciprocate in a direction perpendicular to the first connecting plate to press or loosen the head tube. When pressing, the two ends of the head tube are respectively fitted onto the second diameter segment of the first limiting post and the second limiting post. The second limiting post is installed in the opposite direction to the first limiting post, and the first diameter segment of the second limiting post is fixed on the second connecting plate.

[0036] Since there is an inclined tube between the head tube and the horizontal section, and the inclined tube is relatively long, a first limiting member 9 is fixedly installed on the rear end face of the base to improve positioning stability. The first limiting member has a groove with a width equal to the diameter of the inclined tube, and the length direction of the first limiting member is perpendicular to the axis of the inclined tube. The cylinder body of the first pressing cylinder 10 is fixedly installed on the side of the base. The piston rod of the first pressing cylinder is fixedly connected to the first pressing block 11. When the head tube is positioned by the first limiting post and the second limiting post, the inclined tube part is located in the groove. The first pressing cylinder drives the first pressing member to press and fix the inclined tube and the first limiting member from the rear of the inclined tube, thereby achieving dual positioning and improving the stability and accuracy of positioning. In addition, a top-clamping cylinder can be used to press the inclined tube from the side to further improve stability. For the top-clamping cylinder 32, its cylinder body can be fixed on the base by the bracket 33, and the telescopic rod should face the inclined tube.

[0037] The horizontal section support bracket includes a first bracket 12, a second bracket 13, a third bracket 14, and a second pressing cylinder 15 arranged at intervals. The first and second brackets are located between the connection between the nameplate base and the horizontal section (first welding position) and the connection between the bottom bracket welding assembly and the horizontal section (second welding position). The third bracket is located directly below or at the rear end of the second welding position. The upper ends of the first and second brackets have notches with a depth less than the diameter of the horizontal section. The horizontal section is partially located within the notches. One side of the third bracket has a backrest. The first and second brackets can meet the support and positioning requirements. The third bracket is located at the tail end and plays an auxiliary support and positioning role. The second pressing cylinder is located between the first and second brackets. The cylinder body of the second pressing cylinder is fixed on the working platform. The extension and retraction direction of the extension rod of the second pressing cylinder is vertical. The upper end of the extension rod of the second pressing cylinder is fixedly connected to the second pressing block 16. After the horizontal section is placed in the notch, the second pressing cylinder drives the second pressing block to press the horizontal section into the notches of the first, second, and third brackets from above.

[0038] A nameplate base positioning bracket 17 is fixedly installed on the workbench. After the nameplate base is placed in the nameplate base positioning bracket, the horizontal section is placed in the recess. At this time, the horizontal section is in contact with the nameplate base.

[0039] Since the nameplate base and the horizontal section are in oblique contact rather than vertical and horizontal, the side of the nameplate base positioning bracket facing the horizontal section is an inclined surface. The inclination angle between the inclined surface and the horizontal surface is the same as the inclination angle of the nameplate base relative to the horizontal surface. The upper surface of the nameplate base positioning bracket is fixedly installed with baffles 18 on both sides and the bottom. The height of the baffles is less than the height of the nameplate base 19 to avoid interference. The nameplate base has two small holes. To prevent the nameplate base from shaking or shifting during the positioning process, there are two positioning rods on the inclined surface. When the nameplate base is placed on the nameplate base positioning bracket, the positioning rods pass through the small holes 20 to assist in positioning and prevent shaking or shifting during the contact between the nameplate base and the horizontal section. The positioning rods can be made of magnetic material.

[0040] The five-way welding assembly includes a base 21 fixed to the horizontal section and a first horizontal tube 22 and a second horizontal tube 23 fixed to the base and spaced apart. The positioning bracket of the five-way welding assembly includes a first horizontal tube positioning bracket and a second horizontal tube positioning bracket. The first horizontal tube positioning assembly is symmetrically installed on both sides of the second welding position. The first horizontal tube positioning assembly includes a fourth bracket 24 fixed to the workbench. The cylinder body of the third clamping cylinder 25 is fixedly installed on the fourth bracket. The piston rod of the fourth clamping cylinder is fixedly connected to the clamping column. The clamping column includes a large diameter section 26 and a small diameter section 27 fixedly connected to one end of the large diameter section. The other end of the large diameter section is fixedly connected to the piston rod of the fourth clamping cylinder. In use, the small diameter section is inserted into the first horizontal tube, and the two ends of the first horizontal tube abut against the stepped surface formed by the diameter difference between the large diameter section and the small diameter section on both sides.

[0041] Because the distance between the first and second horizontal tubes is relatively close, using the first horizontal tube positioning assembly for positioning the second horizontal tube would result in insufficient space. Therefore, the second horizontal tube is positioned using a second horizontal tube positioning assembly. The second horizontal tube positioning assembly includes a fifth bracket 28 symmetrically arranged on both sides of the second welding position and a fifth pressing cylinder 29. The upper end of the fifth bracket has a notch 30, and both ends of the second horizontal tube are supported in the notch. The cylinder body of the fifth pressing cylinder is fixedly installed on the working platform, and a fifth pressing block 31 is fixedly installed on the piston rod of the fifth pressing cylinder. After the second horizontal tube is placed on the base and both ends are located in the notch, the fifth pressing cylinder drives the fifth pressing block to move downward from above the second horizontal tube to press and fix the second horizontal tube.

[0042] In use, when the nameplate base is placed on the nameplate base positioning bracket, the positioning rod passes through the small hole, the lower end of the head tube is fitted onto the first limiting post, the inclined tube is placed in the groove, and the horizontal section is placed in the notches on the first and second brackets and supported on the third bracket. The first cylinder actuates, driving the second limiting post to insert into the upper end of the head tube. The first clamping cylinder drives the first clamping block to clamp the inclined tube, and the second clamping cylinder drives the second clamping block to clamp the horizontal section, keeping the horizontal section in contact with the nameplate base, completing the initial positioning. At the second welding position, the base, the first horizontal tube, and the second horizontal tube are placed. The fifth clamping cylinder drives the fifth clamping block to clamp the second horizontal tube, and the fourth clamping cylinder drives the top clamping post to clamp the first horizontal tube, positioning the bottom bracket welding assembly on the horizontal section. Positioning is complete, and subsequent welding can proceed.

[0043] It should be noted that the embodiments described above are only for explaining the present invention and do not constitute any limitation on the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to the present invention within the scope of the claims, and revisions can be made to the present invention without departing from the scope and spirit of the present invention. Although the present invention described herein relates to specific methods, materials, and embodiments, it does not mean that the present invention is limited to the specific examples disclosed herein; on the contrary, the present invention can be extended to all other methods and applications with the same function.

Claims

1. An auxiliary tooling for welding horizontal sections of a main beam pipe, comprising a worktable, characterized in that, The front end of the workbench is equipped with a head tube fixing bracket, the rear end is equipped with a horizontal section support bracket, and the workbench is also equipped with a nameplate base positioning bracket and a bottom bracket welding assembly positioning bracket.

2. The auxiliary tooling for welding the horizontal section of the main beam pipe as described in claim 1, characterized in that, The head tube fixing bracket includes a base with a slope on the upper surface. A first connecting plate is fixedly installed on the slope. A first limiting post is fixedly installed on the upper surface of the first connecting plate. A first vertical plate is fixedly installed on the first connecting plate. The cylinder body of a first cylinder is fixedly installed on the first vertical plate. The piston rod of the first cylinder is fixedly connected to a second connecting plate. A second limiting post is fixedly installed on the lower surface of the second connecting plate. The second connecting plate is parallel to the first connecting plate.

3. The auxiliary tooling for welding the horizontal section of the main beam pipe as described in claim 2, characterized in that, The second limiting post has the same structure as the first limiting post. The first limiting post is a stepped shaft shape, including a first diameter segment and a second diameter segment fixedly connected to the upper end of the first diameter segment. The diameter of the first diameter segment is larger than the diameter of the second diameter segment. The upper end of the first diameter segment of the first limiting post is fixedly connected to the lower end face of the first connecting plate, and the second limiting post is installed in the opposite direction to the first limiting post, with the first diameter segment of the second limiting post fixed to the second connecting plate.

4. The auxiliary tooling for welding the horizontal section of the main beam pipe as described in claim 2, characterized in that, A first limiting member is fixedly installed on the rear end face of the base. The first limiting member has a groove with a width the same as the diameter of the inclined tube of the main beam tube, and the length direction of the first limiting member is perpendicular to the axis of the inclined tube. The cylinder body of the first pressing cylinder is fixedly installed on the side of the base. The piston rod of the first pressing cylinder is fixedly connected to the first pressing block. When the inclined tube is located in the groove, the first pressing cylinder drives the first pressing member to press and fix the inclined tube to the first limiting member from the rear of the inclined tube.

5. The auxiliary tooling for welding the horizontal section of the main beam pipe as described in claim 2, characterized in that, The connection between the nameplate base and the horizontal section is the first welding position, and the connection between the bottom bracket welding assembly and the horizontal section is the second welding position. The horizontal section support bracket includes a first bracket, a second bracket, and a second pressing cylinder arranged at intervals. The first bracket and the second bracket are located between the first welding position and the second welding position. The upper end of the first bracket and the second bracket has a notch, the depth of which is less than the diameter of the horizontal section. Part of the horizontal section is located inside the notch. The second pressing cylinder is located between the first bracket and the second bracket. The second pressing cylinder is fixed on the working platform. The extension and retraction direction of the extension rod of the second pressing cylinder is vertical. The upper end of the extension rod of the second pressing cylinder is fixedly connected to the second pressing block. After the horizontal section is placed in the notch, the second pressing cylinder drives the second pressing block to press the horizontal section into the notch from above.

6. The auxiliary tooling for welding the horizontal section of the main beam pipe as described in claim 1, characterized in that, A nameplate base positioning bracket is fixedly installed on the workbench. After the nameplate base is placed in the nameplate base positioning bracket, the horizontal section is placed in the recess and the horizontal section contacts the nameplate base.

7. The auxiliary tooling for welding the horizontal section of the main beam pipe as described in claim 6, characterized in that, The side of the nameplate base positioning bracket facing the horizontal section is an inclined surface. The upper surface of the nameplate base positioning bracket is fixedly installed with baffles on both sides and the bottom. The height of the baffles is less than the height of the nameplate base. The nameplate base has two small holes and two positioning rods on the inclined surface. When the nameplate base is placed on the nameplate base positioning bracket, the positioning rods pass through the small holes.

8. The auxiliary tooling for welding the horizontal section of the main beam pipe as described in claim 1, characterized in that, The five-way welding assembly includes a base fixed to the horizontal section for welding, and a first horizontal tube and a second horizontal tube fixed on the base and spaced apart front and back. The first horizontal tube positioning assembly is symmetrically installed on both sides of the second welding position. The first horizontal tube positioning assembly includes a fourth bracket fixed on the workbench. The cylinder body of the third pressing cylinder is fixedly installed on the fourth bracket. The piston rod of the fourth pressing cylinder is fixedly connected to the top clamping column. The top clamping column includes a large diameter section and a small diameter section fixedly connected to one end of the large diameter section. The other end of the large diameter section is fixedly connected to the piston rod of the fourth pressing cylinder.

9. The auxiliary tooling for welding the horizontal section of the main beam pipe as described in claim 8, characterized in that, The second horizontal tube is positioned using a second horizontal tube positioning assembly. The second horizontal tube positioning assembly includes a fifth bracket symmetrically arranged on both sides of the second welding position and a fifth clamping cylinder. The upper end of the fifth bracket has a notch, and both ends of the second horizontal tube are supported in the notch. The cylinder body of the fifth clamping cylinder is fixedly installed on the working platform, and a fifth clamping block is fixedly installed on the piston rod of the fifth clamping cylinder. After the second horizontal tube is placed on the base and both ends are located in the notch, the fifth clamping cylinder drives the fifth clamping block to move downward from above the second horizontal tube to clamp and fix the second horizontal tube.

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