| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrically-driven construction machine which enhances cooling efficiency of an inverter disposed on a front right side of a revolving superstructure and other control equipment so as to ensure reliability of the control equipment. <P>SOLUTION: The electrically-driven construction machine comprises a lower traveling body and the revolving superstructure revolvably mounted on the lower traveling body. In the electrically-driven construction machine having the revolving superstructure, which includes a revolving frame, a motor chamber provided on the rear side of the revolving frame for housing a main motor that is driven by an external power supply, a hydraulic pump provided on the side of the main motor on the revolving frame, and a control board provided in front of the hydraulic pump, an air outlet port is provided on the upper part of the control board and an air inlet port is provided on the bottom part of the control board, and one end of a cooling air introduction duct is connected to the air inlet port and an opening on the other end of the cooling air introduction duct is disposed facing outside of the revolving superstructure so as to guide outside air into the control board. <P>COPYRIGHT: (C)2012,JPO&INPIT |
