Axle box spring with strong damping characteristic

Abstract

The invention discloses an axle box spring with a strong damping characteristic. The axle box spring comprises a pressing plate, an oil pressure damper, a conical rubber spring, and a base; the oil pressure damper and the conical rubber spring are arranged between the pressing plate and the base; the the conical rubber spring comprises a mandrel, and the mandrel is hollow; the oil pressure damperis embedded and sleeved in the mandrel; and the oil pressure damper and the conical rubber spring form a clearance fit structure. According to the axle box spring with the strong damping characteristic, through the cooperation of the conical rubber spring and the oil pressure damper, the shock absorption rigidity can be provided, and large damping can also be provided, so that shock absorption ofthe axle box spring is well achieved, and the risk of unbalance loading of a vehicle can be effectively reduced. Besides, the oil pressure damper is in clearance fit with the conical rubber spring, sothat the mounting space of a bogie can be saved, the weight of the bogie is reduced, and the running stability of a vehicle and the comfort under heavy load are improved.

Description

technical field [0001] The invention mainly relates to the technical field of rail vehicle vibration reduction, in particular to an axle box spring with strong damping characteristics. Background technique [0002] The main purpose of installing the axle box spring on the bogie is to ensure the smooth and safe operation of the vehicle. The axle box spring is mainly installed between the axle box and the frame to play a series of vibration reduction functions. Usually, the steel spring or rubber spring structure of the axle box spring provides the required vertical stiffness, while absorbing the vibration on the wheel rail and the vehicle is achieved by providing damping through multiple sets of hydraulic shock absorbers. The structure of the axle box spring takes up a large installation space, and at the same time, due to the difference in the installation positions of the components that realize vibration reduction and provide damping, it is also prone to unbalanced loads. ...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that a separate pressure air source needs to be provided during the implementation process, which will increase the structural burden of the frame

And because the internal space of the conical spring is limited, the internal volume of the built-in airbag is limited, and it is difficult to achieve greater damping through the orifice

In addition, the built-in airbag has high sealing requirements, and it is difficult to achieve sealing and installation

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