PROBLEM TO BE SOLVED: To provide a rotation apparatus for an extended leveling plate of an agricultural working machine that has no risk of damage even if right and left working bodies are brought into contact with obstacles, etc., when the agricultural working machine is moved in a state in which the extended leveling plate is developed.SOLUTION: The rotation apparatus 40 for an extended leveling plate includes: an interlocking arm 53 that is arranged at the upper side of the shield cover 27 of a soil puddling working machine 1 and is rotated from one side to the other side of right and left of a second leveling plate (left) 29L a motor for forward and reverse rotations that rotates the interlocking arm 53 a flexible connected body 60 that is connected to between the tip end part of the interlocking arm 53 and an extended leveling plate (left) 30L and a motor controller 70 that controls the operation of a motor and rotates the interlocking arm 53. Rotating the interlocking arm 53 and moving the extended leveling plate (left) 30L to a development position Pt, the motor controller 70 rotates the interlocking arm 53 within the rotation range W of the interlocking arm 53 not to rotate the extended leveling plate (left) 30L upward from the development position Pt and loosens the connected body 60 linked to the interlocking arm 53.COPYRIGHT: (C)2013,JPO&INPIT【課題】延長整地板が展開された農作業機の移動時に、左右の作業体が障害物等に接触しても損傷する虞のない農作業機の延長整地板回動装置を提供する。【解決手段】延長整地板回動装置40は、代かき作業機1のシールドカバー27の上方に配設され、第2整地板左29Lの左右一方側から他方側へ回動する連動アーム53と、連動アーム53を回動させる正逆回転用モータと、連動アーム53の先端部と延長整地板左30Lとの間に接続されて屈曲自在な連結体60と、モータの作動を制御して連動アーム53を回動させるモータ制御装置70とを備える。モータ制御装置70は、連動アーム53を回動させて延長整地板左30Lが展開位置Ptに移動すると、延長整地板左30Lを展開位置Ptから上方へ回動させない連動アーム53の回動範囲W内に連動アーム53を回動させて、連動アーム53に繋がる連結体60を弛ませる。【選択図】図1
