Automatic uncoiling and tensioning equipment for rail car body skin

Abstract

The invention provides automatic uncoiling and tensioning equipment for a rail car body skin. A shearing and tensioning assembly comprises a base longitudinal beam, a movable platform, shearing and pressing devices, pressing and tensioning devices and framework locating and pressing devices. The pressing and tensioning devices are arranged at the left end of the movable platform. The two sets of position-adjustable framework locating and pressing devices are arranged between the shearing and pressing devices and the pressing and tensioning devices. A leveling machine and an uncoiling machine are sequentially arranged on the right sides of the shearing and pressing devices. After a PLC control system is used for controlling all parts to cooperatively work, automatic tensioning, locating before welding and dragging before hoisting of steel plates are achieved. According to the automatic uncoiling and tensioning equipment, uncoiling, leveling, tensioning and welding assembly are integrated on the same work platform for operation; the occupied area of a plant is greatly reduced; steel plate hoisting work after uncoiling and leveling is omitted; the steel plate tensioning work efficiency is improved; the steel plate tensioning quality and the flatness after steel plate tensioning are greatly improved; uncoiling, leveling and tensioning are all completed through automatic control; and the manual cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of skin stretching, and in particular relates to an automatic uncoiling and stretching device for the skin of a rail car body. Background technique [0002] For the whole outer skin of the side wall of the skeleton rail car body, in order to obtain a flat and straight appearance, improve the overall compressive capacity and durability of the steel plate, it is necessary to stretch the skin first when welding the skin. At present, for the tensioning process of the skin, it is first necessary to uncoil and level the rolled skin through an uncoiler and a leveling machine in a large uncoiling site, and the thin long steel plate formed after uncoiling and leveling is made of The crane lifts it to the tensioning station for the tensioning process. Since the steel plate is more than tens of meters long, during the lifting process of the steel plate, on the one hand, the operation is difficult and there is a great p...

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Problems solved by technology

[0002] For the whole outer skin of the side wall of the skeleton rail car body, in order to obtain a flat and straight appearance, improve the overall compressive capacity and durability of the steel plate, it is necessary to stretch the skin first when welding the skin. At present, for the tensioning process of the skin, it is first necessary to uncoil and level the rolled skin through an uncoiler and a leveling machine in a large uncoiling site, and the thin long steel plate formed after uncoiling and leveling is made of The crane lifts it to the tensioning station for the tensioning process. Since the steel plate is more than tens of meters long, during the lifting process of the steel plate, on the one hand, the operation is difficult and there is a great potential safety hazard. On the other hand, during the lifting process, the straightened steel plate is prone to deformation, which affects the subsequent tensioning quality and welding assembly work of the steel plate. In the next stretching process of the steel plate, due to the Poor overall rigidity, structural deformation and other factors lead to insufficient tension force of the hydraulic tensioning system, and the steel plate is prone to slipping during the steel plate tensioning process. The durability and reliability of the tensioning equipment are poor. Moreover, it is used to compress the steel plate head Due to the structural defects of the briquetting block, the stress distribution acting on the head of the steel plate is uneven, resulting in uneven tension deformation of the steel plate, affecting the tension quality, poor safety and reliability, and low tension efficiency. problem, need to improve

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