HYDRAULIC MOTOR CONTROLLER FOR WORK MACHINE

摘要

PROBLEM TO BE SOLVED: To prevent the number of hydraulic pumps from increasing and suppress size increase of the hydraulic pump, in adding a sub-hydraulic motor separate from a main hydraulic motor.;SOLUTION: A hydraulic motor controller for a work machine includes: a hydraulic pump 131; a main hydraulic motor 141 which is driven by pressure oil discharged from the hydraulic pump 131, and actuates a work tool 108; a sub-hydraulic motor 142 which is connected in series with the main hydraulic motor 141 on an oil passage of the pressure oil discharged from the hydraulic pump 131, and is driven by pressure oil discharged from the hydraulic pump 131; an operation member 157 which operates a work tool 108; operation determination means which determines the existence of the operation of the work tool 108; and drive pressure control means which reduces the drive pressure of the sub-hydraulic motor 142 compared with the case where it is determined that no operation of the work tool exists by the operation determination means, when it is determined that the operation of the work tool by the operation determination means.;COPYRIGHT: (C)2015,JPO&INPIT