Torsional vibration isolator

Abstract

The invention provides a torsional vibration isolator, which is used in engine crankshafts and the like, and can effectively solve the problem that crankshaft torsional vibration is transferred to an accessory gear train, thereby improving automotive ride comfort. The torsional vibration isolator comprises a driving disc, a driven disc hub and an elastic damping unit, wherein the elastic damping unit is composed of a circular guide rail and a plurality of elastic components uniformly distributed on the guide rail; a bulge is formed at the middle part of the driving disc; a through hole is formed at the middle part of the bulge, and a bearing is pressed and mounted at the periphery of the bulge; a plurality of shifting yokes are uniformly distributed on the driving disc, and each of the shifting yokes is respectively provided with a first groove at the same side; rib plates are arranged in the driven disc hub, both the number and the positions of the rib plates are corresponding to those of the shifting yokes, and each of the rib plates is respectively provided with a second groove; the first grooves and the second grooves are opposite to each other; the periphery of the bearing ispressed and mounted in the through hole at the center of the driven disc hub, the guide rail of the elastic damping unit is mounted in the first grooves and the second grooves, and the elastic components are distributed between the shifting yokes and the rib plates.

Description

technical field [0001] The invention belongs to the technical field of mechanical transmission, and in particular relates to a torsional vibration isolator. Background technique [0002] The crankshaft in an automobile engine is a torsional elastic system, which itself has a certain natural vibration frequency. When the engine is working, the magnitude and direction of the force acting on the crankshaft change periodically. , torsional vibration occurs due to speed fluctuations, and the torsional vibration will be transmitted to the accessory system of the engine through the pulley and the belt, resulting in noise and vibration of the parts in the accessory system, which greatly reduces the ride comfort of the car, so there is an urgent need for a A torsional vibration isolator that can effectively solve the problem of transmission of crankshaft torsional vibration to accessory gear trains. Contents of the invention [0003] The purpose of the present invention is to pr...

AI Technical Summary

Problems solved by technology

[0002] The crankshaft in an automobile engine is a torsional elastic system, which itself has a certain natural vibration frequency. When the engine is working, the magnitude and direction of the force acting on the crankshaft change periodically. , torsional vibration occurs due to speed fluctuations, and the torsional vibration will be transmitted to the accessory system of the engine through the pulley and the belt, resulting in noise and vibration of the parts in the accessory system, which greatly reduces the ride comfort of the car, so there is an urgent need for a A torsional vibration isolator that can effectively solve the problem of crankshaft torsional vibration transmission to accessory gear trains

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