PROBLEM TO BE SOLVED: To prevent damage of a ground sensor caused by forget of housing, and to reduce operation load of an operator by dispensing with manual housing operation of the ground sensor.SOLUTION: In a versatile combine harvester 1, a reaping unit 2 is provided with a ground sensor 19 for detecting a ground height of the reaping unit 2. The versatile combine harvester 1 includes driving means (motor 28 for the ground sensor) for switching the position of the ground sensor 19 between a working position capable of detecting the ground height of the reaping unit 2 and a housed position where the reaping unit 2 is retracted upward from the working position. In response to the detection of stop or rearward motion of a machine frame, the position of the ground sensor 19 is automatically switched to the housed position.COPYRIGHT: (C)2015,JPO&INPIT【課題】収納忘れによる接地センサの破損を防止するとともに、接地センサの手動収納操作を不要にしてオペレータの操作負担を軽減する。【解決手段】機体の前部に昇降自在に連結される刈取部2に、刈取部2の対地高さを検出する接地センサ19を備えた汎用コンバイン1において、接地センサ19の位置を、刈取部2の対地高さを検出可能な作業位置と、作業位置から上方に退避した収納位置とに切換える駆動手段(接地センサ用モータ28)を備え、機体停止又は後進の検出にもとづいて、接地センサ19の位置を自動的に収納位置に切換える。【選択図】図4
