| 摘要 |
<P>PROBLEM TO BE SOLVED: To restrain the occurrence of cavitation in a supply oil passage for connecting a storage part and a hydraulic pump, when having an oil cooler in the supply oil passage for connecting the storage part and the hydraulic pump, in a hydraulic circuit structure of a working vehicle. Ž<P>SOLUTION: This hydraulic circuit structure includes the storage part 8 for storing a hydraulic fluid, a hydraulic mechanism 59, and the hydraulic pump 60 for supplying the hydraulic fluid of the storage part 8 to the hydraulic mechanism 59, and is constituted so as to return the hydraulic fluid of the hydraulic mechanism 59 to the storage part 8. The hydraulic circuit structure further includes the oil cooler 63 in the supply oil passage 62 for connecting the storage part 8 and the hydraulic pump 60, and a bypass oil passage 65 capable of supplying the hydraulic fluid of the storage part 8 to the hydraulic pump 60 by bypassing the oil cooler 63. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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