PROBLEM TO BE SOLVED: To provide a combine harvester performing smooth threshing work by relaying grain culms from a reap pretreatment part to a transfer starting end of a feed chain.SOLUTION: An auxiliary relaying chain (9a) is placed at an inner position of the transfer starting end of the feed chain (22), and rotary power is transmitted from a rear part of the reap pretreatment device (3) through a transmission device to the auxiliary relaying chain (9a). Base parts of a first grain culm guide (24) and a second grain culm guide (25) for guiding grain culms are attached to the attaching member (26) of the side of the reap pretreatment device (3), the first grain culm guide (24) is extended backward, the rear end of the first grain culm guide (24) is positioned above the auxiliary relaying chain (9a), the second grain culm guide (25) is extended backward, the rear end of the second grain culm guide (25) is positioned above the transfer starting end of the feed chain (22), and the first grain culm guide (24) is crossed with the second grain culm guide (25) by planar view.COPYRIGHT: (C)2012,JPO&INPIT【課題】刈取前処理部側からフィ-ドチェンの搬送始端部へ穀稈を受け継いで円滑に脱穀処理できるものとする。【解決手段】フィードチェン(22)の搬送始端部の内側の位置に補助受継チェン(9a)を配置し、補助受継チェン(9a)に刈取前処理装置(3)の後部から伝動装置を介して回転動力を伝動する構成とし、刈取前処理装置(3)側の取付部材(26)に穀稈案内用の第1穀稈ガイド(24)及び第2穀稈ガイド(25)の基部をそれぞれ取り付け、第1穀稈ガイド(24)を後方へ延長して第1穀稈ガイド(24)の後端部を補助受継チェン(9a)の上側に配置すると共に、第2穀稈ガイド(25)を後方へ延長して第2穀稈ガイド(25)の後端部をフィードチェン(22)の搬送始端部の上側に配置し、第1穀稈ガイド(24)と第2穀稈ガイド(25)を平面視で交差させる。【選択図】図3
