| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic fluid cooling device that prevents a rubber hose forming a hydraulic fluid circulation circuit from being degraded or damaged by the heat of a hydraulic fluid. SOLUTION: Even if the hydraulic fluid circulation circuit 10 is almost closed and the hydraulic fluid circulates between a relief valve 14 and a circulating pump 12 and makes it impossible to let a quantity of heat escape from the circulating pump 12 to the hydraulic fluid, a temperature sensor 16 detects the temperature of the hydraulic fluid circulating between the relief valve 14 and the circulating pump 12 and a controller 15 stops the operation of the circulating pump 12 according to the output of the temperature sensor 16. Thus before the rubber hose forming the hydraulic fluid circulation circuit 10 is degraded or damaged by the heat of the hydraulic fluid received from the circulating pump 12, the operation of the circulating pump 12 is stopped to prevent degradation or damage of the rubber hose. COPYRIGHT: (C)2007,JPO&INPIT
|
