Method and device for assembling and welding power integrated support of special vehicle

Abstract

The invention relates to a special vehicle power integrated support assembling and welding method and device, and belongs to the field of special vehicle assembling. The assembling and welding device comprises two parts, one part is used for assembling and welding an overall shape frame of the power integrated support, and the shape size is guaranteed. And the second part is used for assembling and welding each mounting seat of the power integrated bracket, unifying the positioning reference and ensuring the relative size. According to the method, an original power integrated support assembling and welding and machining machining mode is optimized, a two-step assembling and welding forming mode is adopted, the size requirement of each mounting base of the power integrated support is guaranteed, subsequent machining is not needed, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of special vehicle assembly, and specifically relates to a method and apparatus for welding an integrated power bracket for special vehicles. Background Technology

[0002] The integrated powertrain bracket for special vehicles is a crucial connecting component for mounting the integrated powertrain onto the vehicle body. Its structure contains numerous mounting interfaces, requiring adherence to both the installation requirements of the integrated powertrain and the bracket, as well as the assembly requirements of the integrated powertrain bracket with the vehicle body. Therefore, a welding and machining process is typically employed to ensure the dimensional accuracy of each mounting hole. During welding, specialized tooling is used to position each mounting base based on its shape, ensuring rough positioning dimensions and enabling subsequent machining of the mounting holes. However, since the dimensions of these mounting holes are mostly spatial, the parts require repeated rotation during machining, making it impossible to maintain a unified positioning reference. This results in lengthy machining times and difficulty in achieving the required assembly quality, often necessitating re-grinding during subsequent integrated powertrain assembly. To address these issues, a new welding method for the integrated powertrain bracket of special vehicles is needed to improve its welding efficiency and quality. Summary of the Invention

[0003] (a) Technical problems to be solved The technical problem to be solved by this invention is to provide a method and apparatus for welding a powertrain integrated bracket for special vehicles, which solves the problem of repeated grinding and hoisting required during the assembly and welding of the powertrain integrated bracket. (II) Technical Solution To solve the above-mentioned technical problems, the present invention provides a special vehicle power integrated bracket welding device, characterized in that it includes: a tooling base plate, a left longitudinal beam positioning assembly B4, a left rear engine mount positioning assembly 3, a left front engine mount positioning assembly 2, a left longitudinal beam positioning assembly A1, a left longitudinal beam positioning assembly II16, a left rear engine mount positioning assembly I15, a left front engine mount positioning assembly I14, a left longitudinal beam positioning assembly I13, a rear crossbeam positioning assembly A8, a right rear engine mount positioning assembly 7, a right front engine mount positioning assembly 6, a front crossbeam positioning assembly 5, a right rear engine mount positioning assembly I18, a right front engine mount positioning assembly I17, a quick locking pin 12, a rear crossbeam positioning assembly B11, a right longitudinal beam positioning assembly 10, a transmission box support positioning assembly 9, a rear crossbeam positioning assembly I21, a right longitudinal beam positioning assembly I20, a transmission box support positioning assembly I19, and a transmission box support positioning assembly II22. The tooling base plate has the following components arranged sequentially from front to back on the left side: left longitudinal beam positioning assembly B4, left rear engine mount positioning assembly 3, left front engine mount positioning assembly 2, left longitudinal beam positioning assembly A1, left longitudinal beam positioning assembly II16, left rear engine mount positioning assembly I15, left front engine mount positioning assembly I14, and left longitudinal beam positioning assembly I13. The tooling base plate has, in sequence from front to back, a rear crossbeam positioning assembly A8, a right rear engine mount positioning assembly 7, a right front engine mount positioning assembly 6, a front crossbeam positioning assembly 5, a right rear engine mount positioning assembly I18, and a right front engine mount positioning assembly I17 on its upper surface. The tooling base plate has, in sequence from front to back, a quick-locking pin 12, a rear crossbeam positioning assembly B11, a right longitudinal beam positioning assembly 10, a transmission box support positioning assembly 9, a rear crossbeam positioning assembly I21, a right longitudinal beam positioning assembly I20, a transmission box support positioning assembly I19, and a transmission box support positioning assembly II22.

[0004] A method for welding an integrated power bracket for special vehicles, the method being implemented using a welding device, specifically including the following steps: Step 1: Weld the left longitudinal beam, right longitudinal beam, front cross beam, and rear cross beam of the integrated power bracket separately; Step 2: Use the left longitudinal beam positioning assembly A1, left longitudinal beam positioning assembly B4, front crossbeam positioning assembly 5, rear crossbeam positioning assembly B11, left longitudinal beam positioning assembly 113, left longitudinal beam positioning assembly II 16, right longitudinal beam positioning assembly I 20, and rear crossbeam positioning assembly I 21 to assemble and weld the left longitudinal beam, right longitudinal beam, front crossbeam, and rear crossbeam. Step 3: After the welding of each beam has cooled, the integrated power bracket is hoisted from the first part of the welding device to the second part and fixed with positioning pins. The left front engine mount positioning assembly 2, left rear engine mount positioning assembly 3, right front engine mount positioning assembly 6, right rear engine mount positioning assembly 7, left front engine mount positioning assembly I14, left rear engine mount positioning assembly I15, right front engine mount positioning assembly I17, right rear engine mount positioning assembly I18, transmission box support positioning assembly 19, and transmission box support positioning assembly II22 are fixed with positioning pins and bolts to fix the left front, left rear, right front, and right rear engine mounts and transmission box support.

[0005] Step 4: After the welding has cooled, remove the positioning pins and connecting bolts, and lift out the integrated power support bracket.

[0006] In step 1, the mounting base on the integrated bracket needs to be positioned and welded on a tooling fixture.

[0007] In step 2, the left longitudinal beam, right longitudinal beam, front cross beam, and rear cross beam of the integrated bracket are assembled and welded, and then each beam is fixed by bolts.

[0008] In step 3, after completing step 2, the first part of the welding device can simultaneously weld the next integrated power bracket. The first part is used for welding the overall frame of the integrated power bracket to ensure its external dimensions. The second part is used for welding the various mounting bases of the integrated power bracket to establish a unified positioning reference and ensure relative dimensions.

[0009] (III) Beneficial Effects Compared with existing technologies, the present invention has the following advantages: Compared with the traditional welding + machining method, this welding method improves the welding quality and efficiency of the integrated power bracket. It avoids the problem of repeated grinding and hoisting due to dimensional errors of the integrated power bracket during subsequent integrated power assembly, effectively improving welding efficiency and assembly accuracy. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of the welding assembly. Figure 2 Welding fixtures for the integrated power support bracket; Figure 3 Positioning assembly for the left longitudinal beam; Figure 4 Positioning assembly for the left front engine mount. Detailed Implementation

[0011] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0012] This embodiment provides a special vehicle power integrated bracket welding device, characterized in that it includes: a tooling base plate, a left longitudinal beam positioning assembly B4, a left rear engine mount positioning assembly 3, a left front engine mount positioning assembly 2, a left longitudinal beam positioning assembly A1, a left longitudinal beam positioning assembly II16, a left rear engine mount positioning assembly I15, a left front engine mount positioning assembly I14, a left longitudinal beam positioning assembly I13, a rear crossbeam positioning assembly A8, a right rear engine mount positioning assembly 7, a right front engine mount positioning assembly 6, a front crossbeam positioning assembly 5, a right rear engine mount positioning assembly I18, a right front engine mount positioning assembly I17, a quick-locking pin 12, a rear crossbeam positioning assembly B11, a right longitudinal beam positioning assembly 10, a transmission box support positioning assembly 9, a rear crossbeam positioning assembly I21, a right longitudinal beam positioning assembly I20, a transmission box support positioning assembly I19, and a transmission box support positioning assembly II22. The tooling base plate has the following components arranged sequentially from front to back on the left side: left longitudinal beam positioning assembly B4, left rear engine mount positioning assembly 3, left front engine mount positioning assembly 2, left longitudinal beam positioning assembly A1, left longitudinal beam positioning assembly II16, left rear engine mount positioning assembly I15, left front engine mount positioning assembly I14, and left longitudinal beam positioning assembly I13. The tooling base plate has, in sequence from front to back, a rear crossbeam positioning assembly A8, a right rear engine mount positioning assembly 7, a right front engine mount positioning assembly 6, a front crossbeam positioning assembly 5, a right rear engine mount positioning assembly I18, and a right front engine mount positioning assembly I17 on its upper surface. The tooling base plate has, in sequence from front to back, a quick-locking pin 12, a rear crossbeam positioning assembly B11, a right longitudinal beam positioning assembly 10, a transmission box support positioning assembly 9, a rear crossbeam positioning assembly I21, a right longitudinal beam positioning assembly I20, a transmission box support positioning assembly I19, and a transmission box support positioning assembly II22.

[0013] A method for welding an integrated power bracket for special vehicles, the method being implemented using a welding device, specifically including the following steps: Step 1: Weld the left longitudinal beam, right longitudinal beam, front cross beam, and rear cross beam of the integrated power bracket separately; Step 2: Use the left longitudinal beam positioning assembly A1, left longitudinal beam positioning assembly B4, front crossbeam positioning assembly 5, rear crossbeam positioning assembly B11, left longitudinal beam positioning assembly 113, left longitudinal beam positioning assembly II 16, right longitudinal beam positioning assembly I 20, and rear crossbeam positioning assembly I 21 to assemble and weld the left longitudinal beam, right longitudinal beam, front crossbeam, and rear crossbeam. Step 3: After the welding of each beam has cooled, the integrated power bracket is hoisted from the first part of the welding device to the second part and fixed with positioning pins. The left front engine mount positioning assembly 2, left rear engine mount positioning assembly 3, right front engine mount positioning assembly 6, right rear engine mount positioning assembly 7, left front engine mount positioning assembly I14, left rear engine mount positioning assembly I15, right front engine mount positioning assembly I17, right rear engine mount positioning assembly I18, transmission box support positioning assembly 19, and transmission box support positioning assembly II22 are fixed with positioning pins and bolts to fix the left front, left rear, right front, and right rear engine mounts and transmission box support.

[0014] Step 4: After the welding has cooled, remove the positioning pins and connecting bolts, and lift out the integrated power support bracket.

[0015] In step 1, the mounting base on the integrated bracket needs to be positioned and welded on a tooling fixture.

[0016] In step 2, the left longitudinal beam, right longitudinal beam, front cross beam, and rear cross beam of the integrated bracket are assembled and welded, and then each beam is fixed by bolts.

[0017] In step 3, after completing step 2, the first part of the welding device can simultaneously weld the next integrated power bracket. The first part is used for welding the overall frame of the integrated power bracket to ensure its external dimensions. The second part is used for welding the various mounting bases of the integrated power bracket to establish a unified positioning reference and ensure relative dimensions.

[0018] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A welding device for an integrated power support bracket of a special vehicle, characterized in that, include: Tooling base plate, left longitudinal beam positioning assembly B (4), left rear engine mount positioning assembly (3), left front engine mount positioning assembly (2), left longitudinal beam positioning assembly A (1), left longitudinal beam positioning assembly II (16), left rear engine mount positioning assembly I (15), left front engine mount positioning assembly I (14), left longitudinal beam positioning assembly I (13), rear crossbeam positioning assembly A (8), right rear engine mount positioning assembly (7), right front engine mount positioning assembly (6), front crossbeam positioning assembly (5), right rear engine mount positioning assembly I (18), right front engine mount positioning assembly I (17), quick locking pin (12), rear crossbeam positioning assembly B (11), right longitudinal beam positioning assembly (10), transmission box support positioning assembly (9), rear crossbeam positioning assembly I (21), right longitudinal beam positioning assembly I (20), transmission box support positioning assembly I (19), and transmission box support positioning assembly II (22); The tooling base plate has the following components arranged sequentially from front to back on the left side: left longitudinal beam positioning assembly B (4), left rear engine seat positioning assembly (3), left front engine seat positioning assembly (2), left longitudinal beam positioning assembly A (1), left longitudinal beam positioning assembly II (16), left rear engine seat positioning assembly I (15), left front engine seat positioning assembly I (14), and left longitudinal beam positioning assembly I (13). The tooling base plate has the following components arranged sequentially from front to back: rear crossbeam positioning assembly A (8), right rear engine mount positioning assembly (7), right front engine mount positioning assembly (6), front crossbeam positioning assembly (5), right rear engine mount positioning assembly I (18), and right front engine mount positioning assembly I (17). The tooling base plate is provided with quick locking pin (12), rear crossbeam positioning assembly B (11), right longitudinal beam positioning assembly (10), transmission box support positioning assembly (9), rear crossbeam positioning assembly I (21), right longitudinal beam positioning assembly I (20), transmission box support positioning assembly I (19) and transmission box support positioning assembly II (22) in sequence from front to back on the right side of the upper surface.

2. A method for welding an integrated power bracket for special vehicles, characterized in that, The welding method is implemented based on the welding apparatus of claim 1, and specifically includes the following steps: Step 1: Weld the left longitudinal beam, right longitudinal beam, front cross beam, and rear cross beam of the integrated power bracket separately; Step 2: Use the left longitudinal beam positioning combination A (1), left longitudinal beam positioning combination B (4), front crossbeam positioning combination (5), rear crossbeam positioning combination B (11), left longitudinal beam positioning combination (113), left longitudinal beam positioning combination II (16), right longitudinal beam positioning combination I (20), and rear crossbeam positioning combination I (21) to weld the left longitudinal beam, right longitudinal beam, front crossbeam, and rear crossbeam; Step 3: After the welding of each beam has cooled, the power integrated bracket is hoisted from the first part of the welding device to the second part and fixed by positioning pins. The left front engine mount positioning assembly (2), left rear engine mount positioning assembly (3), right front engine mount positioning assembly (6), right rear engine mount positioning assembly (7), left front engine mount positioning assembly I (14), left rear engine mount positioning assembly I (15), right front engine mount positioning assembly I (17), right rear engine mount positioning assembly I (18), transmission box support positioning assembly (19), and transmission box support positioning assembly II (22) are fixed by positioning pins and bolts to the left front, left rear, right front, and right rear engine mounts and transmission box support. Step 4: After the welding has cooled, remove the positioning pins and connecting bolts, and lift out the integrated power support bracket.

3. The special vehicle power integrated bracket welding device as described in claim 2, characterized in that, In step 1, the mounting base on the integrated bracket needs to be positioned and welded on the tooling fixture.

4. The special vehicle power integrated bracket welding device as described in claim 2, characterized in that, In step 2, the left longitudinal beam, right longitudinal beam, front cross beam, and rear cross beam of the integrated bracket are assembled and welded, and then each beam is fixed by bolts.

5. The special vehicle power integrated bracket welding device as described in claim 2, characterized in that, In step 3, after completing step 2, the first part of the welding device can simultaneously weld the next integrated power bracket.

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