Low floor passenger-carrying chassis

Abstract

The invention relates to a coach chassis with low floor and belongs to the technical field of car chassis structure. The coach chassis with low floor is characterized in that a cross beam of a chassis frame crosses over a back-bridge shockproof suspension system and a front-bridge shockproof suspension system, the chassis frame is a fully-integral girder chassis frame, the lower end of the back-bridge shockproof suspension system is connected with a trailer of shockproof suspension systems, and the upper end is fixed with the cross beam of the chassis frame; the upper end of the front-bridge shockproof suspension system is fixed with the cross beam of the chassis frame, and the lower end is connected with a front bridge; a first-level step and a floor of a coach carriage are positioned on the same plane, and the rear of the front bridge is taken as a front door entry. The fully-integral girder chassis frame with ultra-low floor of the invention leads the front door to be arranged in the rear of the front bridge and the first-level step and the floor of the coach carriage to be positioned on the same plane, thus improving travelling comfort; the chassis has simple assembly, convenient disassembly and maintenance; the invention has low gravity center, good operation performance and high safety coefficient, as well as driving smoothness, good shockproof effect and long service life.

Description

1. Technical Field [0001] The invention relates to a low-floor passenger car chassis and belongs to the technical field of vehicle chassis structure. 2. Background technology [0002] At present, the distance from the passenger car chassis to the ground is relatively high, and it takes two or three steps to reach the top of the passenger car chassis. The high chassis also raises the center of gravity of the passenger car relatively. [0003] As shown in Figures 1 and 2, the front and top views of the prior art bus chassis, the side of the bus chassis 11 is fixed with an I-shaped crane 12, the I-shaped crane 12 is connected to a steel plate 13, and the steel plate 13 is connected to the front and rear axles. The passenger car chassis beam is located on the side of the shock-absorbing suspension system of the front and rear axles, and the force of the passenger car chassis beam is located on the side of the shock-absorbing suspension system. After long-term stress, the passenger ca...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the above problem of the high chassis of the bus, and provide a method that can reach the upper floor of the bus compartment only through one step and relatively lower the center of gravity of the bus. Low-floor bus chassis with long chassis life

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