PURPOSE: To provide an auger screw for conveyance and a conveyor, capable of performing the smooth conveyance without causing retention in a succession part, etc., and useful for cabbages, etc., by helically forming recessed grooves and protruding ridges in a straight rod shaft and changing the depth of the recessed grooves, raising feed operating surfaces of the protruding ridges in a nearly vertical state and forming the operating surfaces.
CONSTITUTION: This auger screw 47 for conveyance is obtained by alternately forming helical recessed grooves 45 and protruding ridges 46 in the shaft direction on the surface of a straight rod shaft 44. The inside diameter including the recessed grooves 45 is changed in a tapered form of a greater groove depth in the opposite directions of the conveyance in a screw part 48 of a partial length of the straight rod shaft 44 and the outside diameter including the protruding ridges 46 is the same over the full length of the straight rod shaft 44. Feed operating surfaces 50 of the protruding ridges 46 in the screw part 48 are raised in nearly a vertical state in the shaft direction and formed to provide the auger screw 47 for the conveyance. Furthermore, this conveyor 42 is preferably constituted by installing a pair of the screws 47 parallel in the shaft direction side by side on the shafts so as to mutually rotate in the inward direction and forming a bosom 51 due to the opposite recessed grooves 45 in the tip part of the straight rod shafts 44.
KATO KEIZO
KOBASHI KOGYO KK
YANMAR AGRICULT EQUIP
KUBOTA KK