Integrated modular welding tool for rail car power system mounting bases

Abstract

Provided is an integrated modular welding tool for rail car power system mounting bases. Position adjusting devices used for adjusting the positions of the mounting bases are arranged on step surfaces of all layers of a multi-layer step-shaped main frame, and the number of the position adjusting devices is the same as that of the mounting bases. The position relationship of the position adjusting devices is the same as the welding position relationship of the mounting bases on a car frame longitudinal beam. The connecting positions of the mounting bases on the multi-layer step-shaped main frame are changed through the position adjusting devices, so that the fixed ends of the mounting bases integrated at the bottom of the multi-layer step-shaped main frame can smoothly avoid the car frame longitudinal beam and be subjected to fixed-position welding after position adjustment on the multi-layer step-shaped main frame. By means of the integrated modular welding tool, the height difference size of the mounting bases is guaranteed, and the welding position precision of the mounting bases and the hole pitch size precision of mounting surfaces, used for mounting a power system, of the mounting bases are improved. The multi-layer step-shaped main frame has high rigidity, so that deformation control over the mounting bases in the welding process is facilitated, the difficulty of welding the power system mounting bases is reduced, and the efficiency of welding the mounting bases is improved.

Description

technical field [0001] The invention belongs to the technical field of rail engineering machinery, and in particular relates to an integrated modular welding tool for a mounting seat of a power system of a rail car. Background technique [0002] As my country's urban subway traffic scale, operating speed, operating mileage and operating frequency continue to increase, rail cars have become the first transportation for people to travel. The rail car of the related art includes a frame and a power system installed on the frame. The power system needs to be supported on the frame by a plurality of power system mounts welded on the frame. Model cars such as GCD-1000 / DAS-12 The power system mounting seat used to support the power system in the frame has a total of 6 mounting seats as a group. In order to ensure the reliability of the power system, the hole distance dimension accuracy of the mounting surface used to install the power system on the mounting seat is required to be ±...

AI Technical Summary

Problems solved by technology

The rail car of the related art includes a frame and a power system installed on the frame. The power system needs to be supported on the frame by a plurality of power system mounts welded on the frame. Model cars such as GCD-1000 / DAS-12 The power system mounting seat used to support the power system in the frame has a total of 6 mounting seats as a group. In order to ensure the reliability of the power system, the hole distance dimension accuracy of the mounting surface used to install the power system on the mounting seat is required to be ±0.5mm , and the installation surfaces of the mounting seats at different installation positions on the frame longitudinal beam have different height differences. However, if the six mounting seats are welded separately, it is difficult to measure the height difference of the mounting surface, and it is difficult to guarantee, and because Due to the influence of welding deformation, it is difficult to ensure the hole distance dimension on the mounting surface used to install the power system on the mounting seat; the application number is 201910611479.5, and the patent application (hereinafter referred to as the comparison document) named "rail car power system mounting seat assembly" , discloses a structure for precise welding of mounting seats, which includes a rectangular main frame, through holes provided through the four corners of the main frame, and positioning pins protruding around the through holes Fix the four mounting base bolts on the tooling, and then weld the four mounting bases to the corresponding positions of the frame and remove the tooling, but this tooling is only suitable for multiple mounting bases of the same height on the longitudinal beam of the frame Welding fixation, in the face of multiple mounts with height differences, cannot meet the welding requirements; moreover, if the height difference of the mounts is not considered, since the opening size between the frame longitudinal beams is smaller than the mounts For the required opening size, if the tooling structure in the comparison file is used, when the mounting seat of the power system of the tooling belt falls down as a whole, there will be interference between the mounting seat and the frame longitudinal beam, which will cause the mounting seat to fail to fall smoothly to the frame The welding position of the stringers; therefore, in summary, improvements are necessary

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