| 摘要 |
PURPOSE:To obtain greater running tractive force at the time of complex operation when the output of a prime mover is distributed for running and for working purposes, by increasing or decreasing the amount of discharge of a variable capacity oil pressure pump in an working actuator in proportion to the rotation number of the prime mover. CONSTITUTION:To an output shaft of a prime mover 1, a torque converter 2 is connected, and a transmission torque proportional to the rotational number of the prime mover 1 is thus generated by the torque converter 2, and a running drive device 3 is driven by the transmission torque. A variable capacity oil pressure pump 4 is driven by the prime mover 1, and an actuator (oil pressure cylinder) 13 of a working member is driven by the pressure oil discharged therefrom. The rotation number of the prime mover 1 is detected by a detecting means (aperture) 7, and increasing or decreasing of the discharge capacity of the variable capacity oil pressure pump 4 proportional to the detected rotation number is set by a discharge capacity setting means (pump regulator) 6. The output of the prime mover 1 is thus distributed for running and working purposes, and a maximum running tractive force at the time of complexity of these is rendered larger. |
