Skin stretching device, control system and control method

Abstract

The invention belongs to the field of railway engineering vehicle body manufacturing, and provides a skin stretching device, a control system and a control method in order to solve the technical problems that in the prior art, the working efficiency of a stretching machine is low, batch flow line production cannot be achieved easily, the clamping and tensioning state is kept for a long time, and the service life of all components of a device is shortened. The skin stretching device clamps to-be-stretched skin through a first clamping mechanism and a second clamping mechanism. A hydraulic pumpstation drives a stretching device and drives the second clamping mechanism to move along a sliding rail, and the skin is stretched. A pressure sensor installed on the hydraulic pump station and a displacement sensor installed on the stretching mechanism detect the stretching condition in real time, and operation is convenient. In addition, based on the control system of the skin stretching device, closed-loop control over skin stretching and subsequent welding is achieved, and according to the corresponding control method, the skin is lifted away from a technological support and then welded to a vehicle frame, the machining efficiency is effectively improved, and the continuous stretching time of the skin is shortened.

Description

technical field [0001] The invention belongs to a car body manufacturing device for railway engineering vehicles, and in particular relates to a skin tensioning device, a control system and a control method. Background technique [0002] Railway engineering vehicles are special equipment for overhauling railway catenary. The flatness and rigidity of the car body surface of this type of vehicle are very high. In order to meet the requirements, the side wall of the car body is made of 2.5mm thick high-strength steel plate as the skin material. How to control the flatness in the side wall manufacturing process has become a difficult point in vehicle manufacturing. If the side wall manufacturing needs to meet the quality requirements, the whole panel skin manufacturing process should be adopted. The whole panel skin process can reduce splicing welds and improve the flatness of the side wall. However, when the skin and the side wall frame are assembled and welded, the whole panel...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to solve the technical problems of the low working efficiency of the tensioning machine in the prior art, which is unfavorable for batch assembly line production, and the long-term maintenance of the clamping and tensioning state consumes the technical problems of the various parts of the equipment that affect the service life. Hide tensioning device, control system and control method

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