Torsion vibration damper used for main reducing gear

Abstract

The invention relates to a torsional vibration absorber for a main decelerator, and belongs to the technical field of automobile manufacturing. A vibration absorber substrate has a tubular structure, the front end of the vibration absorber substrate is provided with a flange which is provided with a flange connection hole, an inner hole of the vibration absorber substrate is a stepped hole, a spline is arranged in one end of a minor diameter of the stepped hole, the front and the back outside the vibration absorber substrate are provided with an axial limit plate respectively, and a rubber layer is placed between the front axial limit plate and the back axial limit plate. Fixed outer rings are sleeved outside the rubber layer, the front axial limit plate and the back axial limit plate. A first quality loop and a second quality loop are wrapped in the rubber layer from inside to outside. Through adjusting shape and amount of the inner quality loops of the vibration absorber, parameters of rubber, and the like, the vibration absorber restrains torsional vibration peak values under a plurality of frequencies, replaces a shaft end flange or a similar structure at an input shaft of the main decelerator, connects a universal joint at an output end of a transmission shaft and the input shaft of the main decelerator to transfer force, has little alteration on the structure of a vehicle, and is convenient to mount and use.

Description

technical field [0001] The invention relates to a torsional shock absorber used for a main reducer, in particular for reducing the torsional vibration of a drive train of a front-rear drive independent suspension vehicle, and belongs to the technical field of automobile manufacturing. Background technique [0002] Generally, the research on the torsional vibration of the automobile power transmission system is considered as a part of the automobile design during the automobile research and development process. For a vehicle with a front engine, rear wheel drive, and independent suspension structure, the power of the engine is transmitted to the rear of the vehicle through the transmission shaft. Due to the long power transmission distance, the probability of torsional vibration during the transmission process increases; and then Due to the independent suspension structure, the main reducer of the rear axle of the vehicle is directly connected to the vehicle body, so that the...

AI Technical Summary

Problems solved by technology

For a vehicle with a front engine, rear wheel drive, and independent suspension structure, the power of the engine is transmitted to the rear of the vehicle through the transmission shaft. Due to the long power transmission distance, the probability of torsional vibration during the transmission process increases; and then Due to the independent suspension structure, the main reducer of the rear axle of the vehicle is directly connected to the body, so that the torsional vibration of the power transmission system is directly transmitted to the body of the car, which seriously affects the ride comfort of the vehicle and generates large interior noise.

[0003] There are some studies and improvement measures on the torsional vibration of the automotive power transmission system. The focus is to use a torsional damper on the engine end or the drive shaft to reduce the torsional vibration, such as Hassel & Freger Co., Ltd. of Germany and Tokai Rubber Co., Ltd. of Japan. The patents of Industry Co., Ltd. are all aimed at improving the torsional vibration situation at these two positions (CN 101069029A; CN 1139186A), and Zhu Zhuoxuan etc. have carried out some researches on installing the damping ring on the transmission shaft to reduce the torsional vibration of the transmission shaft ( Shanghai Automobile, p14-16, 2003.7), but the design of the vibration damping ring is relatively simple, the improvement effect on torsional vibration is not great, and the adverse effects of the movement of the vibration damping ring in other directions on the power transmission system cannot be suppressed, and the installation is difficult. Inconvenient for practical application

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