In order to improve the reliability and efficiency of the transmission system of mining vehicle

a theoretical analysis and ADAMS kinematics simulation is carried out to the multi-drive shafts model containing rigid universal joint with cross shaft.From the analysis

the angular curve of input shaft

middle articulated shaft and output shaft is educed

and the consequences that the unequal angle of the universal joint will cause the unequal velocity

different speed between two universal joints can be offset by the input and output parallel transmission

and larger angel of the universal joint may lead to transmission failure are proved

so all of these conclusions will provide an effective theoretical basis for design of the transmission system.