| 摘要 |
PURPOSE: A power supply device for an excavator is provided to stably perform an excavating work without cutting an electric wire, and to remarkably reduce costs required for manufacturing the power supply device by reducing the length of the electric wire. CONSTITUTION: A power supply device for an excavator comprises a hoist bar(300) and an electric wire supply unit. The hoist bar is rotatably installed in the top end of a column(200), and is inclined toward top. The electric wire supply unit is installed in the hoist bar. The electric wire supply unit tightly maintains an electric wire connected to a post(130) of an excavator(100), and supplies new electric wires. |
