| 摘要 |
PURPOSE:To unify respective hydraulic pumps so as to reduce an engine load for driving pumps by supplying the excessive oil pressure of a hydraulic pump in a load sensing type power steering means to hydraulic means for engaging/ disengaging a clutch and shifting the gear of a transmission. CONSTITUTION:When an engine is put in rotation, a hydraulic pump 7 is driven through a crankshaft and the oil staying in an oil reservoir 3 filtrated through a filter 4 is forcibly fed in a flow regulation valve 10. The flow regulation valve 10 supplies preset flows of pressure oil to a load sensing type power steering means 15, a hydraulic cylinder 40 for clutch operation, a hydraulic cylinder 41 for transmission operation and a spray nozzle 46. Since the load sensing type power steering means 15 does not require so much amount of pressure oil even during a rest swing, to say nothing of a normal run and respective hydraulic driving means 40/41 of clutch/transmission are rarely operated simultaneously, a single hydraulic pump can actuate the load sensing type power steering means 15 and the hydraulic driving means 40/41 of clutch/transmission. |
