Nonlinear air spring and transverse rigidity design method thereof

Abstract

The invention discloses a nonlinear air spring. The nonlinear air spring comprises an upper cover plate, a support plate, air bags, an annular rubber pile and an abrasion plate; the support plate is coaxially arranged below the upper cover plate, upper and lower sub-openings are arranged at the air bags on the upper cover plate and the support plate, the annular rubber pile is coaxially bonded atthe bottom of the support plate, and the abrasion plate is fixed to the top surface of the support plate; the center position of the support plate is provided with a limiting projection that projectsdownwardly into an inner cavity of the annular rubber pile, the center position of a bottom plate of the annular rubber pile is provided with a limiting stop which protrudes upwards, the top surface of the limiting stop is a groove shape to form a limiting groove, the limiting protrusion extends into the limiting groove along the central axis and is not in contact with the limiting groove, the nonlinear air spring is characterized in that the limiting protrusion is sleeved with an elastic stop, and the elastic stop extends into the limiting groove and is not in contact with the limiting groove. The three-stage transverse nonlinear rigidity is realized, various line conditions are better adapted, and the safety requirement of a vehicle is guaranteed. The invention further provides a transverse rigidity design method of the nonlinear air spring.

Description

technical field [0001] The invention relates to a nonlinear air spring and a method for designing its lateral stiffness, belonging to the field of air springs. Background technique [0002] An air spring is a device with the functions of support, cushioning, height adjustment and angle adjustment, which is widely used in commercial vehicles, buses, rail vehicles and other equipment. Air springs for rail transit include airbags and auxiliary springs. The auxiliary springs can support the airbags, avoid interference, adapt to the operation needs of the airbags when there is no air, and ensure that the vehicle can also run without air. [0003] able to operate safely. When the train passes through the curved track at a high speed, the vibration amplitudes applied to the front and rear directions of the vehicle and the left and right directions are different. Usually, the vibration amplitude received by the left and right directions of the vehicle is relatively large, and the s...

AI Technical Summary

Problems solved by technology

However, only two levels of lateral rigidity can be achieved through the hard stop, which cannot better adapt to the requirements of different lines, and the hard stop will produce impact force when it is working, and the surface of the stop will be severely worn, and the impact will easily cause the connecting parts loose

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