| 摘要 |
PROBLEM TO BE SOLVED: To effectively prevent the worsening in the transmission efficiency of a transmission mechanism in a traveling system, stored in a transmission case by reducing, as much as possible, the amount of retention oil retained in the transmission case in the transmission of the traveling system in a combine harvester equipped with a hydraulic mechanism for working machine, including a hydraulic mechanism for threshing and a hydraulic mechanism for reaping, and a hydraulic mechanism for traveling, including HST for traveling and HST for turning. SOLUTION: The replenishment of hydraulic fluid to the HST for traveling and the HST for turning is carried out by pressure oil from a charge pump using the retention oil in the transmission case as an oil source, and the replenishment of hydraulic fluid to the hydraulic mechanism for threshing and the hydraulic mechanism for reaping is carried out by pressure oil from an auxiliary pump using the retention oil in a counter case as an oil source. COPYRIGHT: (C)2008,JPO&INPIT
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