To increase the allowable maximum weight of a loaded transport material without increasing the dead weight of a transport carriage itself in a transport device using a carriage comprising a liftable transport material support base to be controlled by a floor side cam rail.

This carriage type transport device is provided with a transport material support base 11 supported on a transport carriage 1 freely to be lifted through a cross-link mechanism 10, and the cross-link mechanism 10 is provided with a lifting cam driven roller 32 to be moved upward and downward, interlocking with the hoisting movement of the cross-link mechanism 10, and a cam rail 52 for pushing up the lifting cam driven roller 32 is provided in a transport carriage traveling route. An energizing means 45 is provided to energize the transport material support base 11 upward, and energizing force of this energizing means 45 moves the transport material support base 11 upward when the transport material support base 11 is not loaded with a transport material, but when the transport material support base 11 is loaded with a transport material, energizing force of the energizing means 45 is set at a strength which allows lowering of the transport material support base 11 by a load of the transport material.