| 摘要 |
<p>A shovel, wherein a generator (11) is driven by an engine (10) as a power source, a single electric motor (13) is run with a power supplied from the generator (11), those operation parts such as a lower structure, an upper structure, and excavating attachments are operated by the electric motor (13), and two batteries (12a) and (12b) are used selectively according to load characteristics using a battery switching device (24).</p> |
