Air spring for low speed magnetic suspension train

Abstract

Of the air spring for low speed magnetic suspension train, the air spring muff has the upper part fixed inside the blind hole of the magnetic suspension train slipway; and the rubber bag and the pedestal are set inside the blind hole in the middle part of the magnetic suspension frame in the magnetic suspension train. The rubber bag has its upper part fixed to the middle part of the middle part of the air spring muff and the lower part fixed onto the pedestal; the air spring muff has its lower part combined with a flexible horizontal arresting stop; and the pedestal has flexible vertical arresting stop in the middle part. The air spring has small size and is suitable for use in magnetic suspension train.

Description

[0001] Field [0002] The invention relates to an air spring, in particular to an air spring used for a low-speed magnetic levitation train. Background technique [0003] The air spring is a non-metallic elastic element that adds compressed air to a closed rubber bag and uses the compression elasticity of the air to work. It is widely used in the suspension of transportation vehicles. It can achieve buffering, vibration reduction, and vibration isolation, and can automatically adjust the filling and exhaust volume through the connected regulating valve, so that the height of the car body's bearing surface does not change with the load. In the maglev train, the air spring is used as the secondary suspension, which can reduce the coupling frequency between the running car body and the bogie, and improve the passenger comfort. Existing air springs are mainly divided into bladder type and membrane type. Capsule air springs have small lateral stiffness and can adapt to large late...

AI Technical Summary

Problems solved by technology

Existing capsule air springs or free membrane air springs are too large to be used while meeting performance specifications

When the constrained membrane air spring meets the performance requirements, although the diameter of the capsule can be reduced to 220mm to meet the requirements, but its upper end is too large, it cannot be properly installed on the low-speed maglev train

While meeting the above requirements, the low-speed maglev train also requires that the air spring’s lateral, longitudinal, and vertical displacements should not be too large during operation, that is, the air spring is required to limit the lateral, longitudinal, and vertical positions, otherwise the maglev vehicle will travel relatively The roll angle of the mechanism is large, causing the train to run unsteadily and unsafely

However, the lateral, longitudinal and vertical displacements of all existing air springs are too large, especially the lateral displacement in the horizontal direction, which cannot meet the requirements of low-speed maglev trains.

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