PROBLEM TO BE SOLVED: To avoid occurrence of troubles in which a reaping part is plunged into the ground surface and damaged, etc.SOLUTION: In the combine harvester equipped with a machine body liftably and lowerably disposed between a pair of right and left traveling parts and the reaping part liftably and lowerably mounted on the front end part of the machine body, a work end operation for disengaging a clutch of an operation part mounted on the machine body is interlocked with a drop return control for lowering the machine body to a set position and a ground height control for controlling a ground height so as not to make the reaping part land on the ground surface. When the work end operation for disengaging the clutch of the operation part is performed, the drop return control for lowering the machine body to the set position (for example, the lowest position) is performed and the ground height control for controlling the ground height not to make the reaping part land on the ground surface is carried out.COPYRIGHT: (C)2012,JPO&INPIT【課題】刈取部が地上面に突っ込んで損傷等されるという不具合の発生を回避すること。【解決手段】左右一対の走行部間に昇降自在に架設した機体本体と、機体本体の前端部に昇降自在に取り付けた刈取部とを備えたコンバインにおいて、機体本体に設けた作業部のクラッチを切断させる作業終了操作と、機体本体を設定位置まで下降させる下降復帰制御と、刈取部を地上面に接地させないように地上高を制御する地上高制御とを連動させた。作業部のクラッチを切断させる作業終了操作を行うと、機体本体を設定位置(例えば、最下位置)まで下降させる下降復帰制御がなされるとともに、刈取部を地上面に接地させないように地上高を制御する地上高制御がなされる。【選択図】図1
