To provide an effective measure to be taken when a drive means disposed for each compartment of a traveling route fails in a conveyor frictionally driving a traveling body for conveyance.

The drive means 23 and a control means 24 in pairs are disposed for each compartment of the traveling route, and cables 41 transmitting control signals based on the ON/OFF state of the traveling body detection sensor 32 for conveyance of the drive means 23 to the control means 24 in the upstream side compartment are stretched across the control means 24. Based on the ON/OFF state of the sensor 32 and the control signals given from the control means 24 in the downstream side compartment through the cables 41, the control means 24 control the friction drive wheels 30 of the drive means 23. The device also comprises means 41a and 41b switching the cable 41 from the control means 24 in the downstream side compartment connected to the control means 24 and the cable 41 to the control means 24 in the upstream side compartment to a direct connection state in which the control signals can be transmitted directly from the downstream side to the upstream side.