| 摘要 |
PURPOSE: A power supply device for an excavator is provided to increase the working radius of the excavator to the utmost by expanding/contracting a wire according to the movement of the excavator. CONSTITUTION: A power supply device for an excavator(100) is composed of an electricity supply column(200), an electricity transmitting/receiving post(130), a hoist bar(300), a wire supply unit, a sensor, and a hoist bar rotating unit. The electricity supply column drives the excavator by using the electricity as the power. The electricity transmitting/receiving post transmits the electricity to the upper part of the excavator. The hoist bar rotating unit is installed at the upper part of the column. The wire supply unit s tensely keeps a wire connected to the post and expands/contracts the wire. The sensor is located in the front end of the hoist bar to sense the left and right movement of the wire. The hoist bar rotating unit rotates the hoist bar combined in the column to the moving direction of the wire. The wire supply unit includes a first pulley, a second pulley, a weight member, a guide unit, and an alignment unit. |
