Vibration and noise reduction dynamic shock absorber for rail vehicle wheel set

Abstract

A vibration damping and noise reduction power bump leveler for a rail vehicle wheel pair is provided. A rail vehicle wheel pair has an axle and two wheels configured close to two ends of the axle, wherein an axle case is arranged on end part of the axle; a crankshaft in an inverted U-shape opens downward, one end is fixed on an end cover of the axle case and the other end passes through a gap between the bottom rack of the rail vehicle and a construction rack and downwardly bends; the end part of the other end of the crankshaft is connected with a vibrator with a round upper part and a squarelower part via an elastic vertical fixing assembly; a through hole is axially formed in the vibrator along the axle; a bearing is configured into the through hole; the axle is covered by an internal ring of the bearing and the internal ring can synchronously rotate with the axle; external edges of the upper and lower sides of an external ring of the bearing connected to the internal edges of the upper and lower sides of the vibrator through hole via a hydraulic damper and a damping spiral spring; and the damping spiral spring winds the hydraulic damper in a non-contact way and a parallel-connection is formed. A passive power vibration absorption principle is employed to prevent wheel pair vertical vibration; and the vibration damping and noise reduction power bump leveler is suitable for rail vehicle wheel pair vibration and noise problems.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to the vibration and noise reduction of rail vehicle wheel sets. Background technique [0002] The vertical vibration of the wheel set will not only be transmitted to the car body through the primary suspension and secondary suspension, which will affect the performance and reliability of each component of the vehicle, but will also reduce the comfort of passengers, and is also the main cause of wheel-rail rolling noise. Wheel-rail noise is the main noise source of rail transit, which has an important impact on the lives of residents around rail transit. [0003] In the invention patent of application number 201510661022.7, a rail vehicle with a built-in particle damping shock absorber is mentioned. Grooves are set inside the wheel and damping particles are installed to change the internal structure of the wheel. At the same time, the particles brought The mass ratio is limited. ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a vibration-reducing and noise-reducing dynamic vibration absorber for a rail vehicle wheel set, which uses a passive dynamic vibration absorption principle to suppress the vertical vibration of the wheel set, and is suitable for solving the vibration and noise of the rail vehicle wheel set question

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