An anti-roll torsion bar device with variable stiffness and a method for realizing variable stiffness

Abstract

The invention discloses a variable-rigidity side rolling resistant torsion bar device. The device comprises a side rolling resistant torsion bar and two supporting base assemblies. The two supportingbase assemblies are located on the left side and the right side of the side rolling resistant torsion bar respectively and are used for supporting the side rolling resistant torsion bar; the supporting base assemblies comprise base frames with inner cavities, elastic components, hinge frames with hinge holes and supporting spherical hinges with core holes; the supporting spherical hinges are arranged in the hinge holes of the hinge frames, the hinge frames are located in the inner cavities of the base frames, the elastic components are arranged between the hinge frames and the bottoms of the inner cavities of the seat frames and between the hinge frames and the tops of the inner cavities of the seat frames, and the side rolling resistant torsion bar is arranged in the core holes of the supporting spherical hinges in a sleeved mode. The device has the advantages that under the condition that the rigidity of the side rolling resistant torsion bar is not changed, the initial rigidity of the whole side rolling resistant torsion bar device is reduced, the vibration between a train body and a bogie in the running process of a train is relatively stable, the train running is more stable,and meanwhile, the comfort of train running is remarkably improved.

Description

technical field [0001] The invention relates to a variable stiffness anti-rolling torsion bar device and method, belonging to the technical field of rail transportation. Background technique [0002] The current rail transit vehicle bogies are all two-suspension suspension, which can be generally understood as the upper and lower elastic body supports for vibration reduction. This arrangement results in multiple degrees of freedom for vehicle vibration. The present invention relates to rolling vibrations therein about a running direction axis. [0003] Due to the characteristics of small vertical stiffness and large equivalent deflection, air springs are very suitable for the development of secondary suspensions of rail vehicles, and have been increasingly widely used in secondary suspensions of bogies in recent years. However, due to the small vertical stiffness of the air steel coil spring, the roll angle of the vehicle will increase during the operation of the vehicle, r...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is: after the anti-roll torsion bar device is installed, when the vehicle is running on a straight road or a road with a large turning radius, due to the high initial stiffness of the anti-roll torsion bar, the elasticity between the car body and the bogie The support is too stiff, resulting in a decrease in stability and poor ride comfort

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