| 摘要 |
The invention relates to a hydraulic circuit that enables the maintenance of a ganged valve in the hydraulic circuit and that facilitates the implementation of various functions including circuit flushing and trial run, and to a combination valve used in the hydraulic circuit. In a hydraulic circuit, a combination valve is disposed between a ganged valve and a multi-function valve connected to a hydraulic source and a hydraulic device. The combination valve is fitted with stop valves for opening or closing a path between the hydraulic source and the ganged valve and a path between the ganged valve and the multi-function valve, a stop valve for opening or closing a path between the hydraulic source and the multi-function valve, and a bypass circuit including a stop valve disposed on the hydraulic source side of the stop valve for opening or closing a path between the hydraulic source and the multi-function valve. In this way, the hydraulic source, the ganged valve, flushing, repair, inspection and maintenance of the hydraulic device, and a trial run can be simultaneously performed. The combination valve has a standardized circuit configuration enabling easy manufacturing. |
