MECHANISM FOR CONTROL OF SPOOL VALVES OF TWO DISTRIBUTORS OF HYDRAULIC DRIVE OF MOBILE MACHINE WORKING EQUIPMENT Russian patent published in 1999 - IPC

FIELD: mechanisms for control of working fluid distributing devices used in hydraulic drives of various machines. SUBSTANCE: mechanism has spring-loaded double-arm lever 5 mounted by means of high for swinging in two mutually perpendicular directions; lever 5 is provided with drive handle 6 for taking up muscular force of operator. Lever 5 is kinematically linked with tail-pieces of spool valves by means of tenons 7 fitted with spherical heads. Spool valve tail-pieces are provided with cylindrical tips 8 fitted with outer circular grooves 10 for engagement with spherical heads of tenons 7 oriented to axes of spool valves. In swinging drive handle 6, operator may over each spool valve or act on both spool valves simultaneously. When control action of the operator is removed, spool valves and lever 5 with handle 6 return to their initial neutral position. EFFECT: enhanced reliability. 3 dwg