Passenger compartment underframe internal mounting structure easy to demount for urban rail vehicle

Abstract

The invention discloses a passenger compartment underframe internal mounting structure easy to demount for an urban rail vehicle. The passenger compartment underframe internal mounting structure comprises a side supporting shaft, a connecting strip, a floor pressing strip, a floor cloth, an aluminum honeycomb floor, a rubber cushion, a cold-proof material layer, profile mounting seats and a vehicle body underframe; the vehicle body underframe is mainly constituted by a plurality of transverse beams at the bottom of a passenger compartment of the vehicle and longitudinal beams welded to the twoends of the transverse beams, the multiple profile mounting seats parallel to the longitudinal beams are welded to the multiple transverse beams, the cold-proof material layer is laid on the positions, between the profile mounting seats, of the transverse beams, the rubber cushion is laid on the upper surface of the cold-proof material layer, and the upper part of the rubber cushion is covered with the aluminum honeycomb floor. When the passenger compartment underframe internal mounting structure needs to be demounted, the connecting strip can be conveniently taken out through certain elasticity among the connecting strip, a side wall plate and the floor pressing strip, and the demounting efficiency is improved. According to the passenger compartment underframe internal mounting structure, the machining precision requirements for fixing holes of the floor pressing strip on the vehicle body underframe can further be reduced, and through the adjustable connecting strip, the overall flatness and attractive degree is effectively ensured.

Description

technical field [0001] The invention relates to a production structure of an urban rail vehicle, in particular to an easily disassembled interior structure of a passenger compartment underframe of an urban rail vehicle. Background technique [0002] Urban rail vehicle refers to the railway vehicle with high passenger capacity in the city. It belongs to the term in mainland China, that is, the railway vehicle used in urban rail transit. In mainland China, due to the obvious and clear division of labor in the role of railways, ground railways must play the central role. The role of long-distance transportation, across cities, counties and even across provinces, while the underground railway plays the role of short-distance transportation within the city. Therefore, the vehicles used by the underground railway are often called urban rail vehicles, which are an important part of the urban public transportation system . [0003] Whether it is express trains, high-speed trains be...

AI Technical Summary

Problems solved by technology

[0003] Whether it is express trains, high-speed trains between provinces and cities, or subways in urban areas, the passenger compartment of passenger cars is an important place for carrying people. At present, the production of passenger compartments of passenger cars is based on large car body chassis for filling and fixing. In order to facilitate production, transportation and installation, the side wall panels and bottom panels are carried out in units of blocks, and at the junction of the side walls and the bottom, the bottom panel is currently used for uniform compression. Due to the error problem, adjacent The height error between two pieces or multiple pieces at intervals is sometimes very large. In order to avoid the installation from being uneven and hard, the main solution is to press the floor bead. However, the size of the car body chassis is very large, and the fixing of the floor bead The number of holes is large and the span is large. Once the error between several adjacent or far apart holes becomes large, it will inevitably cause problems of uneven installation and unsightly installation. Rework will inevitably result in waste of time and increase in cost.

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