A system for changing operation of the hydraulic breaker (hydraulic breaker)

摘要

The present invention relates to a single-acting and double-action switching system for a hydraulic breaker installed and used in a heavy equipment, wherein the pressure oil discharged from the first pump (1) flows through a breaker spool (3) of a main control valve 4, the breaker spool 3 is controlled to be switched by a separately controlled switching valve, while the pressure oil discharged from the second pump 5 is controlled by the control valve 6 Is supplied to the breaker spool 3 and combined with the pressure oil supplied from the first pump 1 to be supplied to the hydraulic breaker 4 or to be drained directly to the oil tank 7 through the control valve 6 So that the supply direction of the pressure oil supplied to the hydraulic breaker 4 can be switched to one side or both sides as required. In the present invention, a double-acting actuator other than the hydraulic breaker can be installed in the place where the hydraulic breaker 4 is connected, so that the utility value of the heavy equipment can be increased.