EXCAVATOR RUNNING GEAR Russian patent published in 2002 - IPC

FIELD: crawler gears of power shovels with independent drive of each track. SUBSTANCE: running gear has under carriage frame with tracks, twin track sprockets and idlers and hydraulic motors of track independent drive. Hydraulic motor of each track drive is made in form of high-torque rotary planetary hydraulic motor installed between two track sprockets, its rotor being coupled directly with common shaft of track sprockets whose bearing supports are secured on under-carriage frame. Housing of hydraulic motor is coupled with undercarriage frame by means of lever rigidly secured on housing and by carrier hinge-coupled with lever and with undercarriage frame. EFFECT: improved reliability of running gear. 3 dwg