HYDRAULIC DRIVE OF WORKING PACE OF MINING MACHINE Russian patent published in 2000 - IPC

FIELD: mining machine building, design of hydraulic drives of undercarriage of mining machines. SUBSTANCE: hydraulic drive of working pace of mining machine includes hydraulic pump, hydraulically controlled hydraulic distributor with control lines linked with outlet conduits to hydraulic motor, manually controlled hydraulic distributor, OR hydraulic valve, hydraulic motor, kinematic transmission with clutch, inlet and outlet conduits, stopping device manufactured in the form of spring-loaded hydraulic cylinder with rod space and piston, two controlled check valves with pushers. Piston of spring-loaded hydraulic cylinder interacts with pushers of controlled check valves in end of working stroke. Outlet conduits of manually controlled hydraulic distributor are connected to inlet conduits of controlled check hydraulic valves and via OR hydraulic valve to rod space of spring-loaded hydraulic cylinder and outlet conduits of controlled check hydraulic valves are connected to control lines of hydraulically controlled hydraulic distributor. EFFECT: automated switching on of hydraulic motors of drive of working pace of mining machine when brakes are completely released, increased reliability and safety of mining machine. 1 dwg