PURPOSE: To prevent a suspension device from causing various troubles on account of its high temperature by providing the first and the second fluid passage to make a liquid chamber inside a cylinder mechanism communicate with the outside with a fluid supply unit and a temperature control means.
CONSTITUTION: When a temperature sensor 38 detects that oil temperature in a cylinder 2 has exceeded a fixed value, a command issued from a controller 66 actuates a pump 59, and opens electromagnetic valves 56, 59. A working oil with pressure increase by the pump 59 is fed into a liquid chamber 17 through the first fluid passage 41, and flows into a liquid chamber 28 as it absorbs the heat of an orifice part 31 or the like. The working oil in the liquid chamber 28 is introduced into a cooler 61 through the second fluid passage 42 or the like, and cooled there and then collected in a tank 60. Thus, the orifice part 31 whose temperature is especially apt to rise can be effectively cooled. In addition to that, since an actuator 35 can be simultaneously cooled, it can be also prevented from causing any trouble on account of its exposure to high temperature.
ISHIWATARI SHUSUKE
FUSE TAKESHI
| JPS55176812U | 1980-12-18 | |||
| JPS5315905U | 1978-02-09 | |||
| JPS63172031A | 1988-07-15 |