Rail vehicle and its high and low floor chassis structure

Abstract

The invention discloses a rail vehicle and its high and low floor underframe structure. The high and low floor underframe structure includes two side beams, two traction beams and a connecting beam; wherein, the two traction beams are arranged symmetrically at the longitudinal center of the vehicle body The two ends of the connecting beam are respectively fixedly connected with the side beams on both sides, which are profiles with an "L" shape in cross section, and are configured as follows: in the lateral projection plane, the outside of the vertical section The end faces are fixedly connected with the inner ends of the two traction beams, and the inner end faces of the horizontal sections are used for fixed connection with the outer ends formed by the low floor. Through structural optimization, this scheme can effectively coordinate the overall bearing capacity of the chassis, and on the basis of simplifying the structure, it can meet higher strength requirements and power transmission requirements.

Description

Technical field [0001] The present invention relates to the field of rail transit, and more particularly to a rail vehicle and its high low floor chassis structure. Background technique [0002] At present, there is currently a city-track tram with a low speed of operation speed, and the high and low floor transition zone is more than a slate structure or a step structure, and there are many components. The structure is relatively complicated, and the amount of welding is large. Based on the characteristics of the existing vehicle operation, the existing low floor structure design intensity is usually low, and the power transmission efficiency is low, and the TSI standard requirements are not met. [0003] In view of this, it is urgent to be optimized for the high and low floor chassis connection structure of low floor vehicles to meet higher speed level electric vehicle group strength and power transmission requirements. Inventive content [0004] In order to solve the above te...

AI Technical Summary

Problems solved by technology

[0002] At present, low-floor structures are mostly used for urban trams with low operating speeds. The transitional areas between high and low floors are mostly plate-beam tailor-welded slope structures or step structures, with many parts, relatively complex structures, and a large amount of welding.

Based on the low operating speed of existing vehicles, the design strength of existing low-floor structures is usually relatively low, and the power transmission efficiency is low, which cannot meet the requirements of TSI standards

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