| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic motor control device suppressed in unintended motion of a hydraulic motor caused by failure of an apparatus constituting a hydraulic circuit.SOLUTION: In a device, supply of a hydraulic oil to a hydraulic pump is stopped (S16), and brake is made to brake a hydraulic motor (S17) in response to that an operating portion is non-operated (Yes in S15), hydraulic pressure difference detected by a detecting portion in the non-operation of the operating portion is monitored (S11, S12), the braking of the hydraulic motor by the brake is released (S13) in response to that the operating portion is operated when the hydraulic pressure difference in the non-operation is less than a threshold value (Yes in S11 and Yes in S12), the hydraulic oil of a direction and a flow rate corresponding to the operation received by the operating portion is supplied to the hydraulic pump (S14), and the braking of the hydraulic motor by the brake is continued when the operating portion is operated when the hydraulic pressure difference in the non-operation is the threshold value or more (Yes in S11, No in S12).SELECTED DRAWING: Figure 4 |
