CRANE

A crane comprising a traveling body and a turning body turnably supported by the traveling body, the crane performing power feeding and communication between the traveling body and the turning body. The traveling body is provided with: a power supply; a lower controller which controls the traveling body and transmits power to the devices included in the traveling body; and a lower transmitter-receiver which wirelessly transmits and receives the power and data signal from the power supply. The turning body is provided with: an upper controller which controls the turning body and transmits power to the devices included in the turning body; and an upper transmitter-receiver which wirelessly transmits and receives the power and data signal to and from the lower transmitter-receiver.