Switch type primary vertical shock absorber for high-speed train

Abstract

The invention discloses a switch type primary vertical shock absorber for a high-speed train. The switch type primary vertical shock absorber comprises a cylinder body, a guide cover, a valve base, a piston rod and a piston assembly; the guide cover and the valve base are arranged on the cylinder body; a hollow oil storage cavity is machined in the cylinder body; a bottom valve is installed at the bottom of the oil storage cavity; the piston rod is installed on the guide cover; a piston assembly is installed on the piston rod extending into the cylinder body; an oil guide pipe is arranged on the outer side of the guide cover; a flow guide pipe communicated with the oil guide pipe is installed on the valve base; an electromagnetic valve is arranged on the valve base; and a high-frequency damping valve and a low-frequency damping valve are arranged on the valve base at the end, away from the electromagnetic valve, of the flow guide pipe. According to the shock absorber, the valve base, the bottom valve and the guide cover are arranged on the cylinder body, and the oil guide pipe connected with the guide cover and the valve base is arranged, so that when the piston assembly moves, the electromagnetic valve is matched to enable oil to flow through the high-frequency damping valve and the low-frequency damping valve to absorb vibration, and the shock absorber can cope with high-frequency vibration and low-frequency vibration in the train running process.

Description

technical field [0001] The invention relates to the field of vibration reduction of high-speed trains, in particular to a switch-type primary vertical shock absorber for high-speed trains. Background technique [0002] The wheels of high-speed trains will generate vibrations of various frequencies due to the contact force between the train and the track during the running process, mainly including high-frequency vibrations and low-frequency vibrations. These vibrations will be transmitted to the bogie through the wheels after generation, and then transmitted through the bogie to the body. Among them, high-frequency vibration has great damage to passengers and train components, especially when the train passes through complex road sections such as turnouts and bridges, the high-frequency vibration generated will have a great impact on the dynamic performance of the vehicle system. A series of vertical shock absorbers are generally installed between the wheels and the bogie t...

AI Technical Summary

Problems solved by technology

Among them, high-frequency vibration has great damage to passengers and train components, especially when the train passes through complex road sections such as turnouts and bridges, the high-frequency vibration generated will have a great impact on the dynamic performance of the vehicle system. A series of vertical shock absorbers are generally installed between the wheels and the bogie to reduce the vibration force transmitted to the car body, and the vibration is absorbed by a series of vertical shock absorbers. However, the existing series of vertical vibration dampers The shock absorbers are all passive shock absorbers, which cannot achieve a good damping effect between high-frequency vibration and low-frequency vibration. Therefore, a shock absorber suitable for high-frequency or low-frequency vibration is needed.

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