Novel damper with adjustable stiffness and damping for high speed train

Abstract

The invention discloses a novel damper with adjustable stiffness and damping for a high speed train. The novel damper comprises a dust cover, a magneto-rheological damper and a magneto-rheological valve, wherein an adapting piece is fixedly mounted at the upper end of the dust cover; the lower end of the dust cover is open and covers the outer side of the upper end of the magneto-rheological damper; the magneto-rheological valve is mounted at the bottom end of the magneto-rheological damper through screws; a primary connecting spring is fixedly mounted in the dust cover; the primary connecting spring and a piston rod of the magneto-rheological damper are connected in parallel; the piston rod is in series connection with a secondary connecting spring. The structure enables the whole damping and stiffness of the damper to be related with a resistance part, and can control the whole damping and stiffness of the damper by singly adjusting the damping. The damper utilizes the magneto-rheological valve to control the liquid flow rate in a liquid guide channel in the damper, so as to control the damping, lower the high dosage of magneto-rheological liquid, and reduce the cost while continuously adjusting the damping and stiffness.

Description

technical field [0001] The invention relates to a novel damper suitable for high-speed trains, in particular to a novel damper for adjusting stiffness and damping based on a magneto-rheological valve. Background technique [0002] When the high-speed train is running, the vibration generated by the impact between the rails and the wheels not only affects the passenger comfort, but also reduces the stability and safety of the train operation, threatening the personal safety and property safety of passengers. During the operation of high-speed trains, the operating speed is lower than its critical speed, and the critical speed is limited by the stability of train operation. Increasing the stability of high-speed train operation is of great significance for improving the speed of train operation. To increase the stability of train operation, it is necessary to effectively suppress the impact of wheel-rail collision on the train. A shock absorber with good performance can effec...

AI Technical Summary

Problems solved by technology

In practical applications, it is very inconvenient to manually adjust the mechanical structure continuously, and it is not suitable for use in a mechanism that is always running.

Patent 201120292619.6 is designed to adjust damping by artificially changing the conduction area of ​​the liquid guide hole. Like patent 200420032523, the damper involved in this patent cannot be automatically and continuously adjusted

Patent 201110254088.6 involves a single-rod magneto-rheological damper, which can effectively adjust the damping of the damper, but it cannot change the stiffness of the damper at the same time

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