| 摘要 |
The present invention relates to a multi-chamber type electro-hydraulic actuator of which a single-rod type cylinder having excellent operability, a hydraulic energy storing device, and a control valve are unnecessary. According to an embodiment of the present invention, in a multi-chamber type electro-hydraulic actuator including an electric motor of which speed and a driving direction are controlled; a hydraulic pump/motor driven by the electric motor; and an actuator driven by hydraulic oil supplied from the pump/motor, the present invention provides a multi-chamber type electro-hydraulic actuator characterized by including: a double-rod type cylinder body having a first chamber having a predetermined operational pressure area and receiving hydraulic oil through a first port to operate the actuator and including an axial guider on the center; and a single-rod cylinder rod including a piston sliding along the guider and a second chamber extended from the piston and having an operational pressure area identical to the operational pressure area of the first chamber receiving the hydraulic oil through a second port to extend and operate the actuator. |
