LOGGER Russian patent published in 2003 - IPC

FIELD: timber industry. SUBSTANCE: invention relates to design of loggers. Proposed logger contains self-propelled chassis on tracks and independent drives of tracks of each side. Each drive is made in form of hydraulic motor and final drive with drive sprocket on slow-speed shaft. Logger is furnished with parking brake consisting of closing member, release member, driven and locking members. Driven member is rigidly secured on high-speed shaft of final drive being made in form of gear wheel. Locking member is made in form of gear rack providing normal rack engagement with wheel when parking brake is applied. One end of rack is hinge-mounted on rigid bracket secured on housing of final drive. Other end of rack is high connected with axially movable ends of closing and release members arranged opposite to each other in one axial plane with gear rack square to axis of high-speed shaft. End of closing member housing is installed on bracket of final drive housing, and end of hydraulic cylinder housing of releases member is hinge-mounted on other bracket of final drive housing. EFFECT: improved reliability of parking brake. 2 cl, 3 dwg