| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydraulic drive mechanism having improved output efficiency by reducing loss when driving a charge pump. <P>SOLUTION: The hydraulic drive mechanism comprises a hydraulic pump 10 to be driven by an engine 2, a hydraulic motor 20 connected to the hydraulic pump 10 via a hydraulic circulation circuit 1 so as to be driven with pressure oil circulated and supplied from the hydraulic pump 10, and the charge pump 30 to be driven by the engine 2 for supplying the pressure oil to the hydraulic circulation circuit 1, whereby the drive of the hydraulic motor 20 is externally output. Herein, an assist pump 40 is provided for assisting the supply of the pressure oil to the hydraulic circulation circuit 1 when the hydraulic motor 20 is driven. <P>COPYRIGHT: (C)2008,JPO&INPIT |
