Production method of chassis of railway vehicle

Abstract

The invention relates to a production method of a chassis of a railway vehicle, which comprises the following steps: opening an end beam positioning and clamping device, a side beam positioning and clamping device, a transverse centering device and a body bolster clamping device to the open positions; hoisting a side beam and an end traction and bolster mechanism in place; enabling the transversecentering device to act so as to center a traction beam; starting the end beam positioning and clamping device, and fixing an end beam in place and clamping; starting the body bolster clamping device; placing cross beams inside and outside a bolster; mounting a wire slot at the end part and the wire slot in the bolster; welding a cross beam downhand weld and a vertical weld, and welding a cover plate on a body bolster; retreating the end beam positioning and clamping device, the side beam positioning and clamping device, the transverse centering device and the body bolster clamping device; and using a clamping fixture for clamping. The lower planes of two upper center plates of an end traction and bolster and the lower plane of the end beam are fixed as reference for positioning the height of the end traction and bolster of the chassis, and positioning pins at center holes of the upper center plates and the transverse centering device are used for transverse positioning. The positioning way is reasonable, the artificial marking is not required, the positioning precision is high, and the production efficiency is high.

Description

technical field [0001] The invention relates to a method for producing a railway vehicle chassis. Background technique [0002] At present, in the assembly process of the underframe steel structure, most of them adopt the underframe reverse assembly mode. The design and manufacture of the underframe reverse tire is simple and easy, but the assembly process has higher requirements. After the steel structure of the underframe is assembled, it is required that the levelness of the upper center plate of the underframe corbel is not greater than 0.5mm, and the height difference relative to the bearings on both sides is not greater than 3mm. Both side bearings and side bearings are in a free state. During the assembly process, the levelness of the upper center plate and the height difference between the two side bearings must be continuously measured. If it is not level, the height at both ends must be adjusted to make the size of the upper center plate meet the requirements. [...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that with the development of technology, this assembly method can no longer adapt to the development of technology, which affects the assembly efficiency of steel structure chassis components. At the same time, reverse assembly makes the design benchmark and process benchmark inconsistent, which affects the installation of parts such as corbel beams. Accuracy, due to more processes, greatly reduces production efficiency

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