HYDRAULIC MOTOR Russian patent published in 2003 - IPC

FIELD: rotary slave mechanisms. SUBSTANCE: proposed hydraulic motor designed for rotary slave mechanisms contains housing with opposite cylinders accommodating pistons engaged with toothed racks interacting with toothed wheel and stops. Working liquid deliver-discharge lines are connected to working liquid flow selector operating under action of members interacting with racks and connected by its outlet lines with hydraulic cylinders of clamping devices and working spaces of opposite cylinders. Lines are connected with working spaces of opposite cylinders through six-line three-position distributor. Housing of distributor has three pairs of coaxial holes located in one plane at equal distance from each other. Plunger is provided with two pairs of coaxial radial holes arranged according to neighbor holes of housing. Holes of one row communicate through longitudinal holes stopped at end faces. Plunger is provided also with two ring grooves at edges. EFFECT: improved reliability of hydraulic motor. 3 dwg