| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain proper transmission torque by providing a sensor detecting a turn position on a lift arm and changing pressure rising characteristic of a hydraulic clutch in accordance with the detection of the sensor. SOLUTION: Hydraulic fluid fed out from a main pump 45 flows into a subcon valve 46 for taking out external oil pressure and is led into a valve 48 for horizontal control in a part through a flow dividing valve 47 to expand, shrink, and control a horizontal cylinder 49. The remaining hydraulic fluid divided by the flow dividing valve 47 flows into a valve 50 for lifting, lowering, and controlling a work machine and is fed into a main cylinder 51 to turn a lift arm and lift and lower the work machine. At this time, a turn position of the lift arm is detected by a sensor to change pressure rising characteristic of a hydraulic clutch in accordance with the detection of the sensor. Consequently, it is possible to prevent a shock and a slip at the time of start and shifting.</p> |
