Car body structure

Abstract

The invention provides a car body structure capable of facilitating the process of laying wires and pipes to penetrate through a body bolster, solving the problem of the prior art car body structure such as the increase of the number of components and manufacturing costs, and ensuring the rigidity and strength of the body bolster efficiently. In an underframe 1, wires and pipes 11 are passed through the inner space of a penetration portion 10 of a centre sill penetrated through a body bolster 5. Further, a bulkhead 13 extending along a diagonal line is formed in the interior of the penetration portion 10. According to this arrangement, there is no need to provide a penetrating pipe dedicated to passing through wires and pipes adopted in prior art body bolsters 5, and the load applied froman antirolling device can be borne by the bulkhead 13, so that the process of laying wires and pipes through the body bolster can be facilitated, the problems of the prior art car body structure caused for example by the increase of the number of components and manufacturing costs can be solved, and the rigidity and strength of the body bolster can be efficiently ensured.

Description

technical field [0001] The invention relates to a body structure having a corbel and a center sill intersecting therewith on an underframe. In particular, it relates to a vehicle body structure in which wiring or pipes are laid under a floor. Background technique [0002] In recent years, aluminum alloys with excellent extrudability, corrosion resistance, and weldability for railway vehicles are being developed. Along with this, in railroad vehicles, from the viewpoint of weight reduction and production rationalization, car bodies that effectively utilize large-sized aluminum alloy materials have become mainstream at present. In particular, the underframe constituting the floor portion of a railway vehicle needs to bear a large compression load at the end of the vehicle, and it is considered that the underframe is made of an aluminum alloy hollow extruded section (hereinafter referred to as "hollow extruded section") that is advantageous in strength. frame body structure. ...

AI Technical Summary

Problems solved by technology

[0014] An object of the present invention is to provide a vehicle body structure in which various instruments and wiring and piping connecting them are arranged under the vehicle body floor, and in such a vehicle body structure, the wiring and piping that penetrate the bolster can be easily laid. , to solve the problems existing in the existing body structure such as the number of parts and the increase in production cost, and can effectively ensure the rigidity and strength of the corbel

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