Aluminum alloy car body friction stir welding repair equipment and its control method

Abstract

The invention relates to the field of railway vehicle repair equipment, in particular to aluminum alloy vehicle body friction stirring welding repair equipment and a control method thereof. The invention provides aluminum alloy vehicle body friction stirring welding repair equipment. Telescopic arm assemblies are connected with a propping frame; inner propping assemblies are rotationally connectedwith the telescopic arm assemblies; the inner propping assemblies underprop to-be-repaired wall surfaces and opposite wall surfaces thereof; a hydraulic control system comprises an inner propping driving subsystem; the inner propping driving subsystem comprises a first propping circuit and a second propping circuit; and the first propping circuit and the second propping circuit correspondingly drive two telescopic rods of a double-head hydraulic cylinder to extend or retract relative to a cylinder body, so that propping acting force of the telescopic rods on the to-be-repaired wall surfaces and the opposite wall surfaces thereof is increased or reduced. The invention further provides a control method of the aluminum alloy vehicle body friction stirring welding repair equipment. Underpropping pressure of the inner propping assemblies can be adjusted. The aluminum alloy vehicle body friction stirring welding repair equipment and the control method thereof are wide in application scope and good in welding effect.

Description

technical field [0001] The invention relates to the field of railway car maintenance equipment, in particular to an aluminum alloy car body friction stir welding repair equipment and a control method thereof. Background technique [0002] my country's heavy-haul railway has experienced more than 20 years of development, and its transportation volume and transportation density are among the top in the world. The 25t axle load aluminum alloy railway wagon represented by C80 has the advantages of heavy load, light weight, corrosion resistance, and easy maintenance. It is favored by users and has become an important direction for the development of railway wagons. As the cycle grows, aluminum alloy railway wagons begin to enter the peak period of maintenance, so there is an urgent need for related equipment for maintenance. [0003] In practical applications, the body of aluminum alloy railway freight cars is prone to damage. Some vehicles are scratched by intrusions along the ...

AI Technical Summary

Problems solved by technology

[0007] The reference application number is the patent application document of CN 107717208 A, which discloses a friction stir welding device for vehicle wall panel repair, including friction stir welding unit, rotating telescopic arm unit, upper clamp, lower clamp, friction stir welding The unit can mill and weld the damaged position of the vehicle wall panel, the rotating telescopic arm unit can provide upsetting force for the welding process, the upper clamp and the lower clamp can fix the device on the compartment wall panel, realizing the The welding repair process of the plate during the section repair process, but the function of the device is not perfect. When using the existing device for welding, the welding quality is inconsistent, the welding range is limited, the repair efficiency is low, and the repair cost is high; the overall controllability of the device is poor, With the improvement of welding quality requirements, the welding requirements cannot be met

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