| 摘要 |
<p>PURPOSE:To effectively eliminate the pulse of pump discharge oil by providing an inflow port and an outflow port in an oil chamber of an accumulator, and forming a throttle part having an inner diameter smaller than that of the inflow port in the outflow port. CONSTITUTION:A metal bellows 30 composed of a bellows body 31 which expands in an axial direction and a bellows cap 32 which seals the opening thereof are housed in a cylinder 15. Gas having a pressure higher than atmospheric pressure is sealed between an inner wall of the cylinder 15 and an outer face of the bellows 30 to form an air chamber 45. An inflow port 21 and an outflow port 22 are formed on upper part of an oil chamber 41 in the bellows 30, then discharge oil from a hydraulic pump 11 is introduced into the inflow port 21, and sent through the outlet port 22 to a hydraulic equipment 12. A throttle part 42 is formed in the outflow port 22 to narrower the inner diameter thereof than that of the inflow port 21. Pressure change generated on a pipe line system of the side of an accumulator is levelled.</p> |
