Multi-stage rubber torsion damper

Abstract

The invention relates to a multistage rubber torsion damper, which comprises a damper outer shell and a damper inner shell; the damper outer shell is connected with an engine flywheel and receives torque transmitted by an engine, and the damper inner shell is connected with a transmission system component behind the damper inner shell through an inner hole spline and transmits the torque; the damper outer shell is arranged on the outer side of the damper inner shell in a sleeved mode; an outer ring of the damper outer shell and an inner hole of the damper inner shell are concentrically arranged; and a damping device is arranged between the damper outer shell and the damper inner shell. The multi-stage rubber torsion damper provided by the invention has the following beneficial effects that the resonant frequencies of an engine crankshaft system and a transmission system at different rotating speeds are reasonably adjusted, when the resonant frequencies are within the idle speed, the torsional rigidity of the torsion damper is small, the inherent frequency of a whole shaft system is effectively adjusted to the low range, torsional vibration is avoided, and idle speed noise is eliminated. In the working rotating speed interval, the torsional rigidity of the torsion damper is increased, and the working requirement is reasonably met.

Description

technical field [0001] The invention relates to a multi-stage rubber torsional shock absorber, which belongs to the technical field of torsional shock absorbers. Background technique [0002] When the diesel engine is idling, the rotation of the crankshaft system of the engine is relatively uneven, which will cause the tooth side knocking of the transfer case or the meshing gear of the transmission, resulting in idling noise. When the natural frequencies of the engine crankshaft and the drive train shaft coincide, torsional vibrations are generated, causing fatigue damage to the drive train components, increased wear, and severe torsional vibrations can cause cracks or breakage of the shaft components. The torsional shock absorber is installed on the rear side of the engine flywheel to reduce the torsional rigidity of the joint between the engine crankshaft and the drive train, adjust the torsional vibration frequency of the drive train, and eliminate the torsional vibration...

AI Technical Summary

Problems solved by technology

The multi-stage spring torsional shock absorber adopts two or more stages of springs, and uses the method of successive spring action to obtain different dynamic and static torsional stiffnesses, but the spring torsional shock absorber is easy to transmit low-frequency vibration, and the damping is too small to be effective absorb vibrational energy

[0004]Single-stage rubber torsional shock absorber uses rubber as an elastic element and has nonlinear characteristics. When the torsion angle is different, different dynamic and static torsional stiffness can be obtained, but it is affected by Limited to the allowable strain and allowable stress of the elastic element, the single-stage rubber torsional shock absorber cannot effectively obtain a reasonable stiffness change between the idle speed and the operating speed range

Although it reasonably matches the requirements of the working speed range, there is a certain harmonic frequency in the idle speed range, which causes a certain harmonic torsional vibration and idle noise

Images