| 摘要 |
PURPOSE:To shorten the cycle time by automatically performing a V-shape operation by providing a machanism to vary the distribution ratio of engine output in a working machine and a traveling system. CONSTITUTION:A variable capacity TC14 consisting of a clutch 141 provided between an engine 11 and a change gear 15 and a torque converter (TC) 142, a servo valve 34 to vary the coupling pressure of the clutch 141, a maximum drag force setter 24 to set up the output torque of TC are provided. Also, a sequence controller consisting of a controller 30 to control the valve 34 on each of three operation modes, that is, the first operation mode to completely connect the clutch 141, the second operation mode to convert the output torque of TC into an output torque set by the setter 22, and the third operation mode to give input and output rotation ratios set in the setter 24, a sensor 21 to detect speed- changing time in the change gear 15, and CPU26 to control the device 30 for orderly practising operation modes stored each time of the speed changing time of the change gear 15 with the V-shape operation of the wheel loader is received from the sensor 21 is provided. |
