Design And Analysis Of Mechanical Closed Auto Transmission Test Bench

Auto transmission is the key components to the car drive system,the pros and cons of its performance will be directly impact on the performance of the drive system.Auto transmission test bench is the important means to carry out on the transmission performance test and experimental study.Transmission test bench is used to analysis the transmission efficiency of test and the fatigue life test,which can provide a reliable basis for the structure improvement and performance improvement of transmission.Our country and abroad has developed a variety of transmission test bench,including open power flow test bench and power flow electric enclosed test bench.Based on the research of transverse precursor 5T]36 auto transmission,this paper design and create a mechanical closed auto transmission test bench,and make the analysis of it.The works are as follows:(1)Through the analysis of domestic and foreign auto transmission test bench,determine a human-computer interaction ability,reliable performance,good economic applicable scheme of mechanical closed auto transmission test bench.And design parameters and structure of each component in the system of test bench,including the selection of the power unit motor,growth box,closed gear box structure and parameter design,the design of the loader?support,the design of the connecting shaft and coupling selection,the design of the transmission bracket?lubrication and cooling system etc.(2)Based on Pro/E modeling software,with VB and AGW software as auxiliary,developed the parametric modeling of gear system with visual window.Based on gear parametric modeling system with PRO/E software,completed 3d modeling and virtual assembly of the whole test bench.(3)In mechanical closed auto transmission test bench as the research object,using ANSYS Workbench software on the modal analysis,extract its first 15 order natural frequency and vibration mode,through the analysis of frequency and vibration mode,set up reasonable test-bed system test speed,effectively avoid the resonance range.(4)Finished assembly of test bench,and make the test of transmission efficiency,extract the test data of different variables,through processing experimental data,on the one hand,analyzes the change trend of gearbox transmission efficiency under various variables,on the other hand is verified the feasibility of the design process of the whole test system.