| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hydraulic oil tank for a working vehicle capable of accurately judging the clogging thereof. <P>SOLUTION: The hydraulic oil tank for working vehicle includes a return filter 29 to filtrate the return oil from a hydraulic apparatus, a primary side pressure sensor 32a installed at the inlet to the return filter 29, a secondary side pressure sensor 32b installed on the liquid chamber 28 side of the return filter 29, and a temperature sensor 35 to sense the temperature of the hydraulic oil. The arrangement further includes a controller 34 in which a threshold is entered to judge the clogging of the return filter 29 on the basis of the relation among the hydraulic oil pressure at the inlet, the pressure at the outlet, and the oil temperature, and an alarm monitor to emit a signal when the threshold is exceeded. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
