| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that a drainage pump system equipped with a reduction gear having a mechanical clutch for disengageably transmitting the power from a motor to a pump body, and an oil cooler for cooling lubricating oil supplied to a lubricating portion including the clutch in the reduction gear increases the fitting time of the clutch to obtain a high lubricating effect using the relatively low-temperature lubricating oil, and therefore so far has not been able to perform a quick clutch connection corresponding to flood conditions. <P>SOLUTION: Provided is an oil path switching mechanism 58 which allows selection of a first oil path 60 for supplying a lubricating oil through an oil cooler 5 or a second oil path 61 for directly supplying the lubricating oil to the lubricating portion 67 without passing through the oil cooler 5. At the same time, an oil path switching control structure is configured so that the first oil path 60 is selected by the oil path switching mechanism 58 only while the clutch is connected after the connection operation of the clutch 4 has been completed. <P>COPYRIGHT: (C)2011,JPO&INPIT |
