Patent ID: 8720669

Claim:
A device for delivering a conveying truck into a screw driving area, in screw-driven delivery equipment in which a rotationally driven truck propulsion screw is supported along a truck travel path at the screw driving area in the truck travel path and a driven roller to be engaged with the truck propulsion screw is connected to a conveying truck on the truck travel path, the device comprising: a truck delivery screw supported at an entrance of the screw driving area and having a feeding pitch which is the same as a feeding pitch of the truck propulsion screw, the truck delivery screw and the truck propulsion screw being linked and coupled to each other via a single position electromagnetic clutch which engages only at one point in one rotation, the truck propulsion screw and the truck delivery screw are configured to rotate in the same phase in an engaged state of the electromagnetic clutch; front and back driven rollers connected to the conveying truck at an interval engageable with both of the truck propulsion screw and the truck delivery screw; and a truck delivery means operable to deliver the conveying truck, in a disengaged state of the electromagnetic clutch, while rotating the truck delivery screw by the front-side driven roller of the conveying truck, until this driven roller reaches a fixed position within the truck delivery screw.