A kind of welding processing method of traction beam of rail vehicle

Abstract

The invention discloses a welding processing method for a traction beam of a rail vehicle, which adopts a double-sided multi-layer multi-pass filling welding method, and the auxiliary devices required include a welding tool for clamping and positioning, a welding displacement device and a welding method. The welding pad that promotes the formation of the reverse side of the weld, installs and connects the tooling with the welding displacement device, then clamps and fixes the workpiece on the tooling that is pre-adjusted and set according to the process requirements, and then uses the clamping mechanism of the tooling to set and fix the welding pad. At the welding seam on the back of the workpiece, the welding of the front and back of the workpiece is completed. The embodiment of the present invention is simple, convenient to operate, stable in performance, effectively controls welding deformation, and ensures product quality. The front and back sides of the product can be welded at one time. , saves a lot of auxiliary time such as post-welding correction and secondary clamping, and can significantly improve work efficiency. The invention is applicable to both automatic welding and manual welding, and has good popularization and practical value.

Description

technical field [0001] The invention belongs to the technical field of rail transportation, and in particular relates to a welding processing method for a traction beam of a rail vehicle. Background technique [0002] In the machinery manufacturing industry, the main body of a rail vehicle is usually composed of an underframe, side walls, end walls and a top cover; the underframe carries all the loads of the vehicle, and the traction force of the entire train is transmitted through the underframe, which is the vehicle to the The underframe traction beam is the installation interface of the vehicle traction device and the direct transmission part of the traction force. The quality of the traction beam will directly affect the performance and driving safety of the rail vehicle. The traction beam is the most important key component. [0003] Due to the importance of the traction beam, it must be a high-level quality requirement, and the welding seam must be fully penetrated. Th...

AI Technical Summary

Problems solved by technology

[0003] Due to the importance of the draw beam, it must be high-grade quality requirements, and the weld must be fully penetrated. The draw beam is welded by the coupler surface profile and the wing plate, which belongs to the thick plate welding process. The welding process requires multiple layers. Filling, so there will be a lot of welding deformation, which needs to be corrected after welding, which will not only consume a lot of man-hours but also have certain quality risks

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