A kind of new method which directly measure the temperature of transmission box or the lubrication oil and indirectly get the rotating parts temperature of gear and shaft is puts forward.On the basis of heat transfer theory and network analysis technology

create thermal network model and thermal balanced equations of comprehensive consideration of the gear

shaft

bearing

lubricating oil and the gear box are built

the heat transfer path of unit node and mutual temperature coupling relationship of various parts are studied

as long as through the experiment direct test transmission box temperature or lubricating oil temperature

the temperature of various components in transmission system could be indirectly got

thus the test difficulty of rotating parts in operation process is greatly reduced

the test efficiency is improved.A new way for the temperature test analysis of gear transmission system is provided.