PROBLEM TO BE SOLVED: To provide a combine capable of obtaining a stable and single output waveform from a detection value detected by a sensor for detecting a rotational period of a rotational shaft.SOLUTION: A combine includes: a rotational shaft 23c for rotating a rotary input part for inputting grain to a storage part calculation means which calculates a grain amount on the basis of impact force detected by detection means for detecting the impact force by the grain inputted to the storage part and a pickup sensor 51 (rotational period detection means) which detects a rotational period of the input part. A part of a peripheral surface of the rotational shaft 23c is formed in a notch shape. The combine includes two distance sensors 51a, 51b which face the peripheral surface of the rotational shaft 23c, are positioned on the shaft center of the rotational shaft 23c, have equal distance from one surface L1 parallel to the shaft center, are juxtaposed with another surface L2 orthogonal to the one surface on the shaft center of the rotational shaft interposed therebetween, and detect the distance from the peripheral surface of the rotational shaft 23c. The distances between each of the distance sensors 51a, 51b and the other surface become different.COPYRIGHT: (C)2015,JPO&INPIT【課題】回転軸の回転周期を検出するセンサにて検出された検出値から、安定した単一の出力波形を得ることができるコンバインを提供する。【解決手段】コンバインは、穀粒を貯留部へ投入する回転式の投入部を回転させる回転軸23cと、貯留部に投入された穀粒による衝撃力を検出する検出手段にて検出した衝撃力に基づいて、穀粒量を算出する算出手段と、投入部の回転周期を検出するピックアップセンサ51(回転周期検出手段)とを備え、回転軸23cの周面の一部は切欠状に形成してあり、回転軸23cの周面に対向し、回転軸23cの軸心上に位置し、軸心に平行な一の面L1からの距離が等しく、回転軸の軸心上で一の面に直交する他の面L2を間にして並設され、回転軸23cの周面との距離を検出する二つの距離センサ51a、51bを備え、両距離センサ51a、51bそれぞれと他の面との間の距離は異なる。【選択図】図5
