Tension welding method for carriage of power van

Abstract

The invention discloses a tension welding method for a carriage of a power van. The method is used for welding a side wall framework and outer skin plates of the carriage. Firstly, the upper ends of the outer skin plates are fixed, then tension devices are arranged below the outer skin plates, each tension device comprises oil cylinders and an oil cylinder mounting seat, piston rods stretch out of electromagnets to be attracted to the lower end faces of the outer skin plates, and during work, the oil cylinders retract, and the outer skin plates are stretched downwards; and then the inner sides of the outer skin plates are fixed to the framework in a discontinuous spot welding manner, and every two adjacent outer skin plates are welded from the inner side and the outer side. According to the method, the upper ends of the outer skin plates are fixed firstly, then the outer skin plates are stretched through the tension devices, then the inner sides of the outer skin plates are welded to the framework, protruding or sunken deformation caused by thermal expansion and cold contraction during welding is eliminated by controlling the tension amount, and therefore the flatness of carriage side plates is improved, the subsequent coating ash scraping amount and the labor intensity are greatly reduced, the working efficiency is improved, and the service life of a compartment body is prolonged.

Description

technical field [0001] The invention relates to the field of special-purpose vehicles, in particular to a method for expanding and pulling the compartment of a power supply vehicle. Background technique [0002] The power supply vehicle belongs to electric emergency equipment, which is customized and developed according to the needs of customers in different regions, and has been extended from the original single fuel generator set power supply vehicle to UPS power supply vehicle, hydrogen fuel power supply vehicle, flywheel UPS power supply vehicle and semi-trailer power supply vehicle and other types. The power generation device of the power supply vehicle is generally installed in the compartment. When the side panel of the existing power supply compartment is installed, the whole side panel skin is usually welded on the outside of the skeleton. , and there are many welding points, thermal expansion and contraction during welding may easily lead to welding deformation of ...

AI Technical Summary

Problems solved by technology

The power generation device of the power supply vehicle is generally installed in the compartment. When the side panel of the existing power supply compartment is installed, the whole side panel skin is usually welded on the outside of the skeleton. , and there are many welding points, thermal expansion and contraction during welding may easily lead to welding deformation of the outer skin; especially for the compartment of a large power vehicle, the welding stability is worse, and the deformation makes it difficult to apply evenly in the later stage, the amount of dust scraping increases, and the cost High, and the box body is easy to rust and crack, and the service life is greatly reduced

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