Rail transit air spring suitable for high and cold environment and vehicle damping method

Abstract

The invention discloses a rail transit air spring suitable for the high and cold environment and a vehicle damping method. The rail transit air spring suitable for the high and cold environment comprises an upper cover plate, an abrasion resisting plate, a limiting pressing plate, an air bag, an emergency spring and a sand glass spring. A lower seam allowance of the air bag is in sealed connection with the sand glass spring, and the emergency spring is arranged between the abrasion resisting plate and the sand glass spring. The manner that a large curve bag type air bag structure is matched with an auxiliary spring, and the emergency spring is arranged between the large curve bag type air bag structure and the auxiliary spring is adopted; in the air bag inflation state, the vertical rigidity, transverse rigidity, vertical displacement and transverse displacement of the air spring system are supplied through serial connection of the air bag and the sand glass spring; and in the air bag deflation state, the vertical damping function is achieved through serial connection of the emergency spring and the sand glass spring. By means of the rail transit air spring suitable for the high and cold environment and the vehicle damping method, the small inflation and gas-free vertical and transverse rigidity and large transverse displacement can be provided, and the gas and gas-free running comfort and safety requirements in the high and cold low-temperature environment of -50 DEG C can be met.

Description

technical field [0001] The invention relates to the technical field of vehicle vibration reduction, in particular to an air spring for rail transit and a vehicle vibration reduction method suitable for alpine environments. Background technique [0002] An air spring is a spring device that uses the compressibility of air to achieve vibration damping. The damping performance of the air spring is mainly affected by the characteristics of air and rubber, and both air and rubber are easily affected by temperature. The high cold and low temperature environment will lead to a decrease in the elasticity of the rubber, which in turn will lead to a decrease in the deformation capacity of the air spring, resulting in a significant increase in the vertical and lateral stiffness of the air spring. The increase will weaken the damping ability of the air spring and reduce the running stability and comfort of the vehicle. In severe cases, it will affect the normal operation of the train. ...

AI Technical Summary

Problems solved by technology

The above prior art cannot provide lower vertical lateral stiffness and larger horizontal displacement in the inflated state and provide lower vertical stiffness in the airless state while providing smaller lateral stiffness

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