PROBLEM TO BE SOLVED: To provide a reaped grain culm conveying device in which a guide rail for conveying grain culms toward a grain culm merging section is made retractable from a chain by using a parallel linkage mechanism, and thereby the removal of the clogged grain culm is facilitated.SOLUTION: As feature points of the present invention, a device comprises: right and left root conveyance chains (17) for merging grain culms in a merging section at the conveying direction downstream side while holding grain culms after the reaping and conveying them to the rearward and a guide rail (18) for guiding a part of the conveyance action side of the root conveyance chains (17), the guide rail that includes a first guide rail (18a) of the conveying direction upstream side and a second guide rail (18b) of the conveying direction downstream side. The second guide rail (18b) of the downstream side is movably configured toward the first guide rail (18a) side of the upstream side while being separated in the direction of increasing intervals to the root conveyance chain (17).COPYRIGHT: (C)2015,JPO&INPIT【課題】穀稈合流部へ向けて穀稈を搬送するガイドレールを平行リンク機構を用いてチェンから退避可能とすることにより、詰まり穀稈の除去を容易にする。【解決手段】 本発明の特徴点は、刈取後の穀稈を挟持して後方に搬送しながら搬送方向下流側の合流部に合流させる左右の株元搬送チェン(17)と、この株元搬送チェン(17)の搬送作用側の部位を案内するガイドレール(18)を、搬送方向上流側の第1ガイドレール(18a)と搬送方向下流側の第2ガイドレール(18b)を備え、前記下流側の第2ガイドレール(18b)は、株元搬送チェン(17)に対する間隔が拡大する方向に離間しながら上流側の第1ガイドレール(18a)側に向けて移動可能に構成する。【選択図】 図5