| 摘要 |
A hydraulic cylinder according to an embodiment of the present invention comprises: a cylinder tube having both sides open to have an accommodation space therein; a first plunger inserted into the accommodation space through one through-hole part of the cylinder tube; a second plunger inserted into the accommodation space through the other through-hole part of the cylinder tube; a first impeller coupled to the inserted front end part of the first plunger at a predetermined distance; a second impeller coupled to the inserted front end part of the second plunger at a predetermined distance; a connection part mutually connecting the first plunger with the second plunger in the accommodation space of the cylinder tube; and a pressure supplying unit supplying pressure to working fluid in the accommodation space of the cylinder tube. The hydraulic cylinder can reduce the volume of equipment by equipping no passages through which working fluid flows from the outside of the cylinder to the inside thereof and no external compressive pumps applying pressure to the working fluid; and can be operated by the rotation of the impeller coupled to the plunger. |
