PROBLEM TO BE SOLVED: To provide a farm implement which can carry out proper tilling and land-leveling operation.SOLUTION: The farm implement 1 includes a center operation part 2 and right and left extendable operation parts 3. The center operation part 2 includes a center tilling body 12 for carrying out the tilling operation, and a center land-leveling body 13 for carrying out the land-leveling operation. The extendable operation part 3 includes an extendable tilling body 32 for carrying out the tilling operation, and an extendable land-leveling body 33 for carrying out the land-leveling operation. The center land-leveling body 13 includes a joint-receiving member 30. The extendable land-leveling body 33 includes a movable joint member 70 joining with the joint-receiving member 30 to be detachable in the state of the extended operation of the extendable operation part 3. The extendable land-leveling body 33 includes an urging member for urging the movable joint member 70 to the joint-receiving member 30 side.COPYRIGHT: (C)2012,JPO&INPIT【課題】適切な耕耘整地作業ができる農作業機を提供する。【解決手段】農作業機1は、中央作業部2と、左右の延長作業部3とを具備する。中央作業部2は、耕耘作業をする中央耕耘体12と、整地作業をする中央整地体13とを備える。延長作業部3は、耕耘作業をする延長耕耘体32と、整地作業をする延長整地体33とを備える。中央整地体13は、係合受部材30を有する。延長整地体33は、延長作業部3の展開作業状態時に係合受部材30と係脱可能に係合する可動係合部材70を有する。延長整地体33は、可動係合部材70を係合受部材30側に向けて付勢する付勢部材とを有する。【選択図】図1
