PURPOSE: To provide a forking device for transferring a heavy object using a cantilever fork, which does not require any high rigidity body structure sustaining a moment load and can be embodies in a small dimension.

CONSTITUTION: A load receiving roller 27 is installed at the side face of the second stage 22 of a fork slide part, and a load receiving guide plate 26 is provided on the accommodation rack side to which a heavy object is to be transferred, and thereby the object is placed on the fork lift part 23, and when overhanging is made from a picking self-mobile dolly body 20, the moment load is allowed to run off to the accommodation rack side so that the fork slide part can be designed in minor dimensions.