Bus chassis articulated system for urban bus rapid transit system and working method thereof

Abstract

The invention discloses a bus chassis articulated system for a urban bus rapid transit system and a working method thereof. The bus chassis articulated system consists of a turntable device, a hydraulic system and a system control unit ECU, wherein the turntable device comprises a turntable connected between a front turntable frame and a rear turntable frame; the central position of the turntable is movably connected with a mandril positioned in a vertical center line of the turntable; the upper free end of the mandril is connected with an articulated angle sensor; the hydraulic system comprises a left hydraulic cylinder, a right hydraulic cylinder, a hydraulic integrated block, a hydraulic pump and an oil tank which are arranged on the rear turntable frame and rotate together with the rear turntable frame; hydraulic arms of the left and right hydraulic cylinders are respectively sleeved with a cylindrical helical compression spring; front and rear cavities of the left and right hydraulic cylinders are in crossed connection and oil ways are communicated through the hydraulic integrated block; and the system control unit ECU comprises a microprocessor CPU. The bus chassis articulated system provides a larger torque during large-angle turning, realizes the self-locking function on the maximum articulated angle, and prevents a second axle from laterally sliding and front and rear bus bodies from shearing.

Description

technical field

[0001] The invention relates to a passenger car used in a bus rapid transit system (Bus Rapid Transit for short, BRT), in particular to a chassis hinge system of a rear-engined passenger car. Background technique

[0002] The BRT system is a new type of public passenger transportation system between the rapid rail transit and the conventional bus. The bus of the urban rapid transit system is generally a large-scale articulated vehicle composed of a front body and a rear body, and the front and rear bodies are hinged together by a hinge device. The front body has two axles: the front axle is the steering axle, and the rear axle is the support axle; the rear body has only one drive axle, which is located at the rear of the rear body. Both the engine and the transmission device are arranged on the rear car body to meet the low-floor requirements of buses in the urban rapid transit system. The entire passenger car moves forward relying on the push of the rear b...

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