| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil cooling device for a hydraulic elevator capable of preventing lowering of longevity of hydraulic equipment without increasing capacity of a machine room. SOLUTION: An oil cooling device 21A is temprarily installed on a side surface of an oil tank 11 only for a certain period of time required to prevent lowering of longevity of a sealing member, etc., of hydraulic equipment as a hydraulic elevator is operated in high frequency and oil temperature of the oil tank exceeds an allowable value to transport materials for construction, etc., in a building where the hydraulic elevator is set. A circulating pump 26, a radiator 22 and a fan 25 are stored in this oil cooling device, and additionally, an oil temperature sensor 27 and an oil temperature control device 28 are provided. Connection to the oil tank 11 is carried out by a suction pipe 23 and a return pipe 24. |
