Lifting profiles for interior parts of urban rail vehicles

Abstract

The invention provides a suspension section bar of an in-built part of an urban rail vehicle. The suspension section bar adopts an integrated multi-cavity structure; the integrated fracture surface is J-shaped; mounting holes are formed in a flat plate at the upper part; the lower part is provided with a structure of which a triangular cavity and rectangular cavities are overlapped; a diagonal cavity wall is arranged in the triangular cavity; C-shaped mounting grooves are positioned outside the cavity wall junctions; one side of the outside of the cavity structure extends to form stacked U-shaped wiring grooves; bottom plates of the wiring grooves are provided with cable tie mounting holes. The cavity wall of the section bar has a simple structure, the weight of the vehicle can be greatly reduced; the vehicle assembly process is simplified, the man-hour reduction is especially obvious in the assembly of the middle ceiling and lamps in the guest room, after the section bar is connected with a vehicle body and is regulated well, mounting and regulation of other parts are facilitated, the production progress is accelerated, and manpower, material resources and costs are reduced; the wiring grooves and the section bar are integrated, the strength of the section bar is improved, the material cost is lowered, and the assembly man-hour is reduced; the section bar is reasonable in fracture surface, the assembly force is uniform, and the stability is good.

Description

technical field [0001] The invention relates to a hoisting profile for an inner part of an urban rail vehicle, and belongs to the technical field of vehicle manufacturing. Background technique [0002] In the prior art, the hoisting of the interior roof and side roof of urban rail vehicles generally adopts a secondary skeleton structure, which is arranged above the entire interior roof and side roof. The skeleton is criss-crossed and covered with the roof, and there are also many car body connectors for hoisting, which increases the difficulty of reducing the weight of the vehicle. In addition, the amount of welding of the connecting parts is large, and the welding deformation is not easy to repair. The Chinese patent application with the application number 201310246591.6 and the invention title "Method for Hoisting Internal Components on the Roof of Intercity EMU Carriage" discloses a multi-functional interior hanging arm profile, hoisting the profile on the car body, and ...

AI Technical Summary

Problems solved by technology

However, this kind of profile has many cavity walls, which increases its own weight, and its section is a cantilever structure. After hoisting, a large moment will be generated, so that the force on the hypotenuse on the upper side of the section section and the outer compartment body is extremely uneven.

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