Active control type variable-rigidity anti-side-rolling torsion bar device and variable-rigidity method thereof

Abstract

The invention discloses an active control type variable-rigidity anti-side-rolling torsion bar device and a variable-rigidity method thereof. The device comprises a torsion bar, a supporting base assembly connected with a bogie and a connecting rod assembly hinged to a vehicle body, wherein the torsion bar comprises a torsion bar shaft and a rotating arm arranged at the end of the torsion bar shaft, the supporting base assembly is arranged on the torsion bar shaft in a sleeving mode, the connecting rod assembly is hinged to the free end of the rotating arm, the anti-side-rolling torsion bar device is characterized in that the effective arm length of the device is R, and the supporting base assembly is connected with a hydraulic system and can drive the torsion bar and the connecting rod assembly to move synchronously along with driving of the hydraulic system, so that the effective arm length R of the anti-side-rolling torsion bar device is changed. According to the device, active control over the side rolling rigidity is achieved, the requirement for the excellent riding comfort of passengers in the high-speed running process of a vehicle can be met, the overturning coefficient and the derailment coefficient of the vehicle passing through a parking lot line and a turnout at a low speed are reduced, and then the safety and reliability of the vehicle are improved.

Description

technical field [0001] The invention relates to an actively controlled variable stiffness anti-rolling torsion bar device and a method for changing stiffness thereof, belonging to the technical field of anti-rolling torsion bars. Background technique [0002] Modern passenger rail vehicles usually use relatively soft secondary suspension devices to improve the running stability of the vehicle and passenger comfort, especially the application of air springs on rail vehicles has greatly improved passenger comfort. However, the roll vibration angular stiffness of the car body also becomes relatively soft, which reduces the roll anti-roll stiffness of the vehicle and leads to an increase in the roll angular displacement of the vehicle during operation. When the vehicle passes through a curve or turnout, the vehicle is subjected to lateral wind, and two vehicles meet at high speed, the rolling motion is particularly significant, which affects the comfort of passengers. In severe ...

AI Technical Summary

Problems solved by technology

[0004] Although the anti-roll torsion bar device can improve the roll stiffness of the vehicle, reduce the vehicle flexibility coefficient, and avoid the vehicle intrusion into the limit, it has an adverse effect on the overturning coefficient and derailment coefficient when the vehicle passes through uneven lines and curves.

Images