SELF-PROPELLED TREATMENT MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a self-propelled treatment machine capable of rapidly getting out of a heavily-loaded state associated with the excess of the dead-weight of a conveyor.

SOLUTION: In a self-propelled screen as the self-propelled treatment machine, when a controller 50 determines that the load pressure of a hydraulic motor 27 for an under-conveyor is higher than either of that of a hydraulic motor 26 for the screen and that of a hydraulic motor 28 for an over-conveyor and exceeds preset reference load pressure, the controller 50 actuates a drive assisting valve 61 for the under-conveyor, so that pressure oil discharged from the hydraulic motor 26 can be supplied to the hydraulic motor 27.

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