| 摘要 |
PROBLEM TO BE SOLVED: To stabilize an operation by stabilizing hydraulic pressure applied to a hydraulic cylinder.SOLUTION: A hydraulic actuator includes a working unit 11 that comprises working fluid storage chambers R1 and R2 for storing a working fluid and that is driven by the working fluid of the working fluid storage chambers R1 and R2, and an auxiliary storage chamber 12 that is provided in such a manner as to communicate with a second chamber R2 of a cylinder 11a and that is internally provided with a stretchable gas vessel 12a sealed with gas. Thus, hydraulic pressure applied to the working unit 11 can be stabilized by storing the working fluid in the auxiliary storage chamber 12. This enables stabilization of an operation of the working unit 11. |
