To provide a working machine control device, for a mobile crushing device, which is compact and highly efficient and further, easy to handle.
In the mobile cone crusher on which a cone crusher for crushing an object to be crushed such as rock and a plurality of auxiliary machines such as conveyor for conveying the object to be crushed are mounted, a cone crusher pump which supplies a hydraulic oil to a cone crusher motor 8bd for driving the cone crusher is directly connected to an engine and a change-over valve 8vd for the cone crusher which controls the flow rate of the hydraulic oil to the cone crusher motor 8bd from the cone crusher pump is an open center- type changeover valve which drains the total amount of the hydraulic oil to be discharged from the cone crusher pump when the valve 8vd is set at a neutral position, as the constituents of the cone crusher.
NAKAYAMA TORU
NISHIHARA KO
UMEDA HIROYUKI
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