| 摘要 |
PURPOSE:To provide a device for maintain warm condition of control valve of a hydraulic elevator capable of preventing the control valve from stopping normal motion due to lowering of temperature of the control valve. CONSTITUTION:An oil pressure control valve 5 is provided in a second tank 2T, and simultaneously, a piping 10 for reserving oil 4 discharged from the oil pressure control valve 5 temporarily in the second tank 2T and to transport the oil 4 from the second tank 2T to a first tank 1T is pat in connection. Consequently, as oil temperature and temperature of the oil pressure control valve 5 become constantly the same, it is possible to actuate a hydraulic elevator normally. |
