PROBLEM TO BE SOLVED: To provide a reaping height-detecting device for a combine harvester which is capable of accurately detecting the height of a harvesting unit from the ground even in an ill-drained paddy field, and having a simple structure.SOLUTION: The reaping height-detecting device is constituted as follows. A ground contact wheel (28c) making contact with the ground and following the ground while being swung upward and downward based on the harvesting unit (6), and a sensor (28) for detecting the upper and lower swung positions of the ground contact wheel (28c) are provided in the front part of the harvesting unit (6) provided so as to be freely lifted and lowered. The ground contact wheel (28c) is arranged at the lower side of a grass-dividing body supported by the front end part of a grass-dividing frame (18L), and the upper part of the ground contact wheel (28c) is protruded upward from the grass-dividing body. The grass-dividing body (26) is constituted of right and left grass-dividing guides (26, 26) to be tilted upward and backward from the front end part of the grass-dividing frame (18L) to the lower part of the raising device (21), and the ground contact wheel (28c) is constituted so as to enter into the clearance part of the right and left grass-dividing guides (26, 26).COPYRIGHT: (C)2012,JPO&INPIT【課題】 湿田であっても刈取装置の対地高さを正確に検出でき、構造の簡素なコンバインの刈高さ検出装置を具現する。【解決手段】 昇降自在に設けられた刈取装置(6)の前部に、刈取装置(6)に対して上下に揺動しながら接地追従する接地輪(28c)と、接地輪(28c)の上下揺動位置を検出するセンサ(28)を設ける。また、接地輪(28c)を分草フレーム(18L)の前端部に支持された分草体の下側に配置し、接地輪(28c)の上部が分草体から上方へ突出する構成とする。また、分草体(26)を分草フレーム(18L)の前端部から引起装置(21)の下部へ向けて後上がりに傾斜した左右の分草ガイド(26,26)で構成し、左右の分草ガイド(26,26)の間隔部に接地輪(28c)が侵入する構成とする。【選択図】 図3
