PROBLEM TO BE SOLVED: To continue good threshing by properly keeping the threshing depth even when a small number of grain culms are reaped, in a combine harvester for reaping a large amount of the grain culms and threshing the grain culms.SOLUTION: The grain culm-feeder for the combine harvester is constituted as follows. Grain culm sensors (31a, 31b, ...) for detecting the reaping grain culms for respective rows are installed in the front side position of a reaping apparatus (6), and the threshing is subjected to compulsory shallow threshing control where the threshing is changed to a shallower threshing side when any one (31a) of the grain culm sensors (31a, 31b, ...) does not detect the grain culm, compared to that when the whole sensors detect the grain culms, in the combine harvester obtained by installing ear tip sensors (32a, 32b) of the grain culms in the conveying route of the reaping apparatus (6), and feeding the grain culms to a threshing apparatus (4) by changing the nipping position in a conveyor (15) for regulating the threshing depth according to the ear tip positions of the grain culms detected by the ear tip sensors (32a, 32b) of the grain culms.COPYRIGHT: (C)2012,JPO&INPIT【課題】本発明では、多量の穀稈を刈り取って脱穀するコンバインにおいて、刈取穀稈が少ない場合にも扱ぎ深さを適正に維持して良好な脱穀を継続できるようにすることを課題とする。【解決手段】刈取装置(6)の搬送経路に穀稈穂先センサ(32a,32b)を設け、該穀稈穂先センサ(32a,32b)で検出する穀稈の穂先位置に応じて扱深さ調節用搬送装置(15)の挟持位置を変更して脱穀装置(4)に穀稈を供給するコンバインにおいて、刈取装置(6)の前側位置に刈取穀稈を条毎に検出する穀稈センサ(31a,31b,…)を設け、該穀稈センサ(31a)のうち少なくとも何れか一つが穀稈を検出しない場合には、全ての穀稈センサ(31a,31b,…)が穀稈を検出している場合に比べて浅扱ぎ側に変更する強制浅扱ぎ制御とすることを特徴とするコンバインの穀稈供給装置とする。【選択図】図3
