| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydraulic circuit allowing the work of detecting abnormality of supply/exhaust pipes thereof and the maintenance work of releasing air from the supply/exhaust pipes or packing oil in the supply/exhaust pipes to be done in a short period of time without spending time and effort, and to provide a stop valve used in the hydraulic circuit and a maintenance method of the hydraulic circuit. <P>SOLUTION: Each of the supply/exhaust pipes 35, 36 is constituted in such a manner that a direction changeover valve 37 is arranged between a pump 34 and a hydraulic cylinder 50 and between an oil tank 30 and the hydraulic cylinder, the direction changeover valve 37 is connected to the hydraulic cylinder 50, and hydraulic oil of the hydraulic cylinder 50 is supplied/exhausted by operating the direction changeover valve 37. Each of the supply/exhaust pipes 35, 36 includes a plurality of stop valves 10. Sectional circuits formed by closing the stop valves 10 are utilized so that the inspection, maintenance and repair of the hydraulic circuit are performed quickly. <P>COPYRIGHT: (C)2012,JPO&INPIT |
