PROBLEM TO BE SOLVED: To reduce the load to the reaping or threshing part by limiting the vehicle speed to the fixed level in relation to a change when the operation is shifted from a usual two-row reaping to three-row or four-row reaping, and to prevent troubles such as clogging of grass culms.SOLUTION: The tip intervals of the grass dividing devices (14L, 14R) at both the right and left side ends of the reaping part (4) are composed to be freely shifted between the reduced and expanded states. When the tip intervals of the grass dividing devices (14L, 14R) are in the expanded state, an increase in speed of the traveling device (2) is limited in the expanded state of the grass dividing devices (14L, 14R).COPYRIGHT: (C)2013,JPO&INPIT【課題】通常の2条刈作業から3条~4条刈作業に移行する場合に、その作業の切替操作に関連して車速を一定以下に規制することにより、刈取部や脱穀部にかかる負荷を低減させ、穀稈の詰まりなどによるトラブルを防止する。【解決手段】刈取部(4)の左右両側端部の分草具(14L,14R)の先端部間隔を縮小した状態と、左右の分草具(14L,14R)の先端部間隔を拡大した状態とに切替自在に構成し、左右の分草具(14L,14R)の先端部間隔を拡大した状態では、走行装置(2)の駆動速度の増速が制限される構成とする。【選択図】 図1
