Round steel pipe fully-bearing type vehicular framework

Abstract

A round steel pipe fully-bearing type vehicular body relates to the vehicular body manufacturing technology. A framework of the vehicular body is in a fully-bearing round steel pipe combined structure, the upper portion and the lower portion of the framework are in an integral structure by means of round pipe closed rings, and a passenger door front closed ring, a passenger door rear closed ring, a rear wheel front closed ring and a rear wheel rear closed ring are arranged on the upper side, the lower side and two lateral sides of the framework. Each closed ring is in a closed annular structure made by a whole round steel pipe, and the closed rings is welded with a vehicular body longitudinal framework and a reinforcing support to form the round steel pipe fully-bearing type vehicular body. Manufacturing process is simplified, weld joints and welding deformation are reduced, materials are saved, processing time is shortened, and operation efficiency is improved. Rigidity, strength of the framework and torsional rigidity of the vehicular body are enhanced by means of the fully-bearing round steel pipe combined structure, the anti-torsion strength of the framework is higher than that of a conventional vehicular frame by three to six times, a passenger vehicle is uniform in stress of each portion, and thereby the whole vehicular body is involved in bearing, and safety factor is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to an automobile body manufacturing technology. Background technique [0002] At present, bus manufacturers all use rectangular or square tubes to produce non-full-load body frames. In view of the poor bending performance of rectangular or square tubes, the bending joints between the bottom frame and the five large parts of the front and rear panels, side panels, and roof must be welded separately and finalized. Group welding. The material utilization rate of this production method is not high, the manufacturing process is more complicated, the waste of materials and processing man-hours, the work efficiency is low, the welding seam and welding deformation are more, the rigidity, strength and torsional rigidity of the car body are not as good as the circular tube structure, and the center of gravity of the whole vehicle is also lower. Higher, the driving stability is no...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a round steel tube full-carrying car body, to solve the poor bending performance of the prior art rectangular or square tubes, the bottom frame and the five large bending joints of the front and rear walls, side walls, and roof must be welded separately and finally Welding

The structure is backward, the material utilization rate is not high, the manufacturing process is more complicated, the waste of materials and processing hours, the work efficiency is low, the welding seam and welding deformation are more, the rigidity, strength and torsional rigidity of the car body are not high, etc.

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