| 摘要 |
<p>An excavation system for field work is a system to provide electric power to an electric excavator that excavates the ground and cuts rocks, which comprises: a support which is installed and built on the ground which is separated from the working field of an electric excavator; a cross-beam which is installed on the upper part of the support for vertical rotation; an electric wire which includes a first electric wire placed along the support and a second electric wire placed along the cross-beam and hangs from the fore end part of the cross-beam to the electric excavator; and the electric excavator which is connected to the fore end of the electric wire to be operated by the power supplied therefrom. As a rotary electricity connecting device is installed at the central part of the horizontal rotation of the cross-beam, the first electric wire and the second electric wire are connected although the cross-beam horizontally and vertically rotates. Therefore, as the first electric wire placed along the support for the field work and the second electric wire placed along the cross-beam are connected by the rotary electricity connecting device to guarantee a smooth supply of electric power to the electric excavator even during horizontal and vertical rotation of the cross-beam, the excavation system for field work, unlike the existing excavator, can reduce air pollution in the working field and can easily cut stones by preventing oil burning gas from the engine form polluting the air around the working field.</p> |
