A deflection forming method for a non-center-disc bearing vehicle body

Abstract

The invention discloses a non-core-plate bearing vehicle body deflection forming method. By the adoption of the method, through multiple times of pre-deflection, a middle beam and side beams between two sleeper beams of a non-core-plate bearing vehicle body deflect upwards by 2 mm to 12 mm. The method includes the following steps that firstly, after the front face of a vehicle frame is assembled and welded, the vehicle frame is overturned, the two ends of the vehicle frame are cushioned by steel channels, and the back face is welded; secondly, after the vehicle frame is welded and before an iron floor is welded, the two ends of the vehicle frame are fixed, the middle portion of each side beam deflects 10 mm to 15 mm in advance, and then the iron floor is welded; thirdly, before the vehicleframe and an upper body are combined, the two ends of the vehicle frame are fixed, the middle portion of each side beam deflects 10 mm to 15 mm in advance, and then the vehicle frame and the upper body are combined; and fourthly, before a skin is assembled, the two ends of the vehicle frame are fixed, the middle portion of each side beam deflects 10 mm to 15 mm in advance, and then the vehicle body is covered with the skin. By the adoption of the non-core-plate bearing vehicle body deflection forming method, through multiple times of pre-deflection, the middle beam and the side beams betweenthe two sleeper beams of the non-core-plate bearing vehicle body deflect upwards by 2 mm to 12 mm.

Description

technical field [0001] The invention belongs to the technical field of vehicle manufacturing, and in particular relates to a deflection forming method of a non-center disc bearing vehicle body. Background technique [0002] The deflection forming of ordinary railway freight cars is carried out in the middle beam and frame process, and the pre-deflection and adjustment are carried out based on the center plate. The deflection forming method of the non-center disc bearing car body has become a difficult point in the manufacture of the car. In the prior art, after the front assembly and welding of the vehicle frame are completed, the vehicle frame is turned over, channel steel is placed on both ends of the vehicle frame, and the deformation generated by welding is used to form deflection; No operations related to deflection will be performed in the processes of body-fitting and skinning. Shortcomings of the prior art: (1) The deflection of the side beam cannot meet the requir...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects and deficiencies in the prior art, the present invention provides a deflection forming method for a non-center-disk bearing vehicle body, which overcomes the defect that the deflection forming of a non-center-disc bearing vehicle body is difficult

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