Single-lever control for four hydraulic motors - has spool valves independently actuated via lever rotation for sliding and swivel movement

摘要

The arrangement is intended for controlling four hydraulic motors via a single member (18) and comprises a housing (1) contg. spring-loaded spool valves (6-9) of which two (8, 9) have a tooth rack (16 eg.). The two spools are co-axial with their racks and parallel to the axis of the actuating member (18), whilst the other two (6, 7) are at an angle to this axis. The member comprises two pivotably linked levers (19, 20) which are slidable and rotatable about their longitudinal axis. One lever (19) has a handle (22) and a ring (23) acting on one spool (6) whilst the other (20) is fixed to the spool (8) and carries a gear wheel (24) acting on the spool (7). A further gear wheel in the housing couples the racks for operation of the spool (9).