Research Of The Transmission Shaft Torsional Buffer On Truck

This paper aims to solve a light truck engine damage problem, which comes from the actual project.The solving scheme is to design a transmission shaft torsional buffer, which will be mounted on the tail end of the transmission shaft so as to reduce the impact from the pavement. And, it can also reduce the impact load from the transmission system just to protect the engine.The main research work in this paper is as follows:Firstly, the design scheme was confirmed and CATIA was used for this design. The design of the transmission shaft torsional buffer was completed by chosing cross shaft universal joint, rubber disc, some other mature market products and designing the connection and pre tightening device.Secondly, the computing and analysis for this device performance could be carried out after the above design. The mechanical model of this truck power transmission system was established, and then the Simulink model and the road bumps model could be built. Based on the road bumps model, the shock was given in different stalls and different speeds in order to get the response amplitude of each mass point of the power transmission system.At last, the buffering effect of the transmission shaft torsional buffer could be evaluated by comparing the amplitude.Thirdly, the strength analysis for the rubber disc using ANSYS Workbench was be implemented. After modeling, model importing, meshing, boundary conditions setting and computing, the results proved that the rubber disc meets the strength requirements. Besides, the compression deformation law of the rubber was found when the rubber disc was under tension loading is in compression.Finaly, the topology optimization for the buffer input and output disk was carried out. The results indicated that the weight of two parts had reduced under the premise of ensuring the strength requirements.The innovations of this paper are mainly reflected in the following aspects. One is the design and simulation of the drive shaft torsional buffer, the other one is the discovery of the rubber deformation law in the buffering rubber disc.