Starting with the structure of the three-roll compact device,highlight is given to the wear-out causes of idler gears such as wear out of spindle and spindle bush,fly in the cavity of the gear box,inconsistent tooth angle gear couple.

The bridge-type synchronous gear-drive device was designed to implement the concession of driven shaft in order to protect the costly roll.

Initial analysis on crossing bridge measure of the heavy vehicles

Manual electric arc welding technology for oblique sprocket tooth;

Transfer case sprocket production through the sinter hardening process;

Manufacturing Tool Design of Cycloid Sprocket Teeth Form;