A motor vehicle frame of a light rail vehicle

Abstract

The invention provides a bullet train framework of a light rail vehicle. The bullet train framework of the light rail vehicle comprises side beams and a cross beam, wherein the cross beam is of a boxtype beam structure, and the cross beam comprises a first cross beam and a second cross beam which are arranged at intervals; the first cross beam and the second cross beam are formed by installing and welding cross beam upper cover plates, cross beam lower cover plates, cross beam inner vertical plates and cross beam outer vertical plates correspondingly; a plurality of mounting bases are arranged on the first cross beam and the second cross beam correspondingly, the plurality of mounting bases are integrated with the first cross beam or the second cross beam through a structure of butt jointof at least one surface and hinged connection of multiple surfaces, and the positions of the plurality of mounting bases on the first cross beam and the positions of the mounting bases on the secondcross beam are rotationally symmetric about the central axis of a transverse framework; and the middle parts of the side beams are flush with the upper plane and the lower plane of the cross beam. Compared with the prior art, the bullet train framework of the light rail vehicle can ensure that the design strength meets the use requirements, and meanwhile, also has good manufacturability and good quality measuring degree.

Description

technical field [0001] The invention relates to the technical field of rail locomotive bogies, in particular to a motor vehicle frame of a light rail vehicle. Background technique [0002] Usually, light rail bogies have bolsters and slewing bearings. When the floor is low, the vertical design space of the frame must not intrude into the lower limit on the one hand, and ensure that the bolsters and slewing supports have enough installation space, so that The motion envelope space of the frame is very small, so the cross-section of the frame beam body is too small, and the strength is difficult to meet the use requirements. [0003] For example, the existing patent CN 205273482U is an articulated bogie frame device for low-floor articulated EMUs, CN206589893U is a non-power bogie frame without bolsters, and CN205273483U is a power bogie frame device. In the lower case, the space utilization and structural integrity of the frame are guaranteed. [0004] In addition, to defin...

AI Technical Summary

Problems solved by technology

[0002] Usually, light rail bogies have bolsters and slewing bearings. When the floor is low, the vertical design space of the frame must not intrude into the lower limit on the one hand, and ensure that the bolsters and slewing supports have enough installation space, so that The motion envelope space of the frame is very small, so the cross-section of the frame beam body is too small, and the strength is difficult to meet the use requirements

[0003] For example, the existing patent CN 205273482U is an articulated bogie frame device for low-floor articulated EMUs, CN206589893U is a non-power bogie frame without bolsters, and CN205273483U is a power bogie frame device. In the lower case, ensure the space utilization and structural integrity of the frame

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