Electric construction machine

An electric construction machine comprising:

• a vehicle body having an automotive lower traveling structure and an upper revolving structure rotatably mounted on the lower traveling structure, and a working mechanism attached to a front side of the upper revolving structure and a counterweight attached to the rear side of the upper revolving structure, the upper revolving structure being provided with a power feeding port for connection of a power feeding cable that supplies electric power to a power source, wherein:
• the electric construction machine further comprise a cable support member that is disposed to be capable of being displaced in a vehicle body-side support member attached to the upper revolving structure to grip the power feeding cable connected to the power feeding port;
• a guide member that is disposed between the cable support member and the vehicle body-side support member to regulate a linear displacement of the cable support member to the vehicle body-side support member a horizontal direction;
• a load detecting sensor for detecting a changing quantity in response to the displacement of the cable support member to the vehicle body-side support member;
• and
• a controller configured to issue an alarm when a detection value of the load detecting sensor goes beyond a prescribed threshold value,
• wherein the vehicle body-side support member has an end part that extends to the outside of the upper revolving structure further outward than a rear surface of the counterweight, and
• the cable support member is supported on the end part of the vehicle body-side support member via the guide member so as to be capable of being displaced only in a horizontal direction and not to be capable of being displaced in a vertical direction.