| 摘要 |
A nitrogen energy storage hydraulic cylinder, comprising: a cylinder, a piston (5), a piston rod (2), an oil inlet and outlet hole (3), and a gas inlet and outlet hole. The piston (5) is provided within the cylinder to separate an inside of the cylinder into two cavities. One end of the piston rod (2) is connected to the piston (5), and the other end thereof is configured to protrude from one end of the cylinder. For the two cavities inside the cylinder and separated by the piston (5), the cavity provided with the piston rod (2) is an oil cavity (4), and the cavity not provided with the piston rod (2) is a nitrogen cavity (6). The oil inlet and outlet hole (3) is provided on the cylinder, and one side of the oil inlet and outlet hole (3) is in communication with the oil cavity (4). The oil inlet and outlet hole (3) can supply oil to the oil cavity (4) and drain the oil in the oil cavity (4). The air inlet and outlet hole is provided on the cylinder, and one side of the air inlet and outlet hole is in communication with the nitrogen cavity (6). The air inlet and outlet hole can supply nitrogen to the nitrogen cavity (6) and evacuate the nitrogen in the nitrogen cavity (6). The hydraulic cylinder increases a lifting force and a working radius of the apparatus without consuming apparatus power, further increasing a working efficiency. |
