Automatic overhead welding system for external horizontal fillet welds between end wall and end beam of gondola car

Abstract

The invention discloses an automatic overhead welding system for external horizontal fillet welds between an end wall and an end beam of a gondola car. The system comprises a weld tracking device; the weld tracking device comprises a mounting bracket, an angle adjustment plate, a tracking cylinder, a tracking head, a tracking wheel and a welding torch, wherein the angle adjustment plate is connected with the mounting bracket, the tracking cylinder is connected with the tracking head, and the tracking head drives the tracking wheel as well as the welding torch arranged on the tracking wheel; and the angle adjustment plate slides upwards and downwards along the mounting bracket. The automatic overhead welding system disclosed by the invention has the advantages that because of replacing artificial welding with automatic welding, the parameters of the angles of welding torches, the distances between the front ends and centers of welds, the movement velocity of the welding torch within an interval between the arcing point and arc-receiving point of the welds, and the like can always keep correct, thereby ensuring that the forming of overhead fillet welds is good.

Description

technical field [0001] The invention relates to the welding problem of the elevation angle welds formed after the end walls and end beams at both ends of the railway freight wagon gondola are assembled, in particular to an automatic elevation angle welding system and welding method for the outer transverse welds of the end walls and end beams. Background technique [0002] For a long time, in the manufacturing technology of the C70A open car in the entire railway wagon manufacturing industry, the welding of the 2700mm-long elevation weld formed after the end wall and end beam are assembled has always been done by manual overhead welding. The specific method is as follows; firstly, the paired gondola car body is placed horizontally on the bench of the welding station, and then the welding operator uses CO2 gas shielded welding to carry out manual welding in the form of overhead welding. In order to ensure the good formation of the angled weld, the welding operator should firs...

AI Technical Summary

Problems solved by technology

In the entire railway freight car manufacturing industry, the welding of the two elevation welds of the end wall and end beam of the C70A open car has always been completed by electric welding operators in the form of manual overhead welding. The requirements are very high, and the welding efficiency is low and the labor intensity is high

Therefore, the welding quality of this weld is extremely unstable and affects the appearance quality of the vehicle

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