Actively controlled variable stiffness anti-roll torsion bar device and method for varying stiffness

Abstract

Actively controlled variable stiffness anti-rolling torsion bar device and method for changing stiffness thereof, including torsion bar, support seat assembly connected with bogie and connecting rod assembly hinged with car body, torsion bar including torsion bar shaft and set on The rotating arm at the end of the torsion bar shaft, the support seat assembly is sleeved on the torsion bar shaft, and the connecting rod assembly is hinged with the free end of the rotating arm. It is characterized in that the effective arm length of the anti-rolling torsion bar device is R, and the support seat The assembly is connected with the hydraulic system, and can drive the torsion bar and the connecting rod assembly to move synchronously with the drive of the hydraulic system, so that the effective arm length R of the anti-roll torsion bar device can be changed. The invention realizes the active control of roll stiffness, which not only satisfies the excellent ride comfort of passengers during the high-speed operation of the vehicle, but also reduces the overturning coefficient and derailment coefficient of the vehicle passing through the yard line and turnout at low speed, thereby improving the safety and reliability of the vehicle.

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.

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