| 摘要 |
Provided is a construction machine for which the number of connectors is reduced in order to achieve cost reduction, save space, and improve the ease of maintenance. An electric hydraulic shovel, which has an electric motor (32) and a battery unit (38) serving as a power supply for the electric motor (32), is equipped with: a common connector (58) that is capable of selectively connecting a plug from an external power supply (49A, 49B, 49C); and a buck-boost transformer (52) that adjusts the voltage of electric power supplied from the external power supply through the common connector (58) and a rectifier (51) so as to obtain a preset predetermined charging voltage and supplies the resulting voltage to the battery unit (38). |
