TELESCOPIC GRAIN-UNLOADING AUGER FOR COMBINE HARVESTER

摘要

PROBLEM TO BE SOLVED: To facilitate the prevention of getting worse of a guide mechanism of a transportation screw in a telescopic grain-unloading auger for a combine harvester, moving so as to be extended or contracted while relatively rotating a transportation upstream-side screw part and a transportation downstream-side screw part based on the extension and contraction movement of a tip terminal-side cylinder based on a base terminal-side transportation cylinder.;SOLUTION: A guide mechanism 50 is constituted by installing a guide shaft 52 on the outside of which a screw shaft 41 of a transportation downstream-side screw part is fitted so as to be relatively rotated and freely advanced and retreated, and a guide key 51 freely slidably inserted in a helical guide groove 52a of the guide shaft 52. The guide key 51 is equipped with a cylindrical key body 54 fitting on the outside of the guide shaft 52 so as to be relatively rotatable and freely slidable, a guide protrusion 55 integrally formed on the inner periphery side of the cylindrical key body 54 in a state of being engaged with the helical guide groove 52a so as to be freely slidable, and a linking protrusion 56 integrally formed at the outer periphery side of the cylindrical key body 54 in a state of engaging with the screw shaft 41 so as to be integrally rotatable and freely integrally movable.;COPYRIGHT: (C)2010,JPO&INPIT