| 摘要 |
[Object]
Motorization of a running gear of a construction machine traveling on wheels is realized without enormous increases in vehicle-body dimensions and costs. [Solution means]
A wheeled excavator 41 includes travel wheels 10, 11 installed in a vehicle body, an engine 3, a running motor-generator 15, an inverter 21 and a battery 22 which are electrically connected to the motor-generator 15, a hydraulic pump 4 driven by the engine, and a power transmission mechanism which transmits power among the engine 3, the wheels 10, 11, the running motor-generator 15, and the hydraulic pump 4. A clutch 23 which connects and disconnects the power transmission between the engine 3 and the wheels 10, 11 is provided in the power transmission mechanism. In a required area on the vehicle body, a clutch switching means is mounted for switching the clutch 23 to a disengaged state during a level road run and to an engaged state during a downhill run. |
