HYDRAULIC DRIVE OF TWO-TRACK EXCAVATOR TRAVEL MOTION MECHANISM

摘要

The invention relates to hydrostatic drives road construction and mining machines, namely, excavators, and may be used as their drive systems running. The purpose of the invention - an increase in the speed range of moving the excavator. The hydraulic drive mechanism of movement contains stepwise adjustable motors 1,2c normally closed brakes 3.4, located on the gear right and left caterpillars. Lines 5, 6, the brake control opening 3, 4 are combined hydraulic line and withdrawn through the central collector passage on the turntable, wherein raspolozhony power spools 7 and 8 to their power motors E Lines 9, 10, 11 and 12 control servo. These hydraulic lines connected with the pyramid 13 of the three valves OR retraction. .4