PROBLEM TO BE SOLVED: To provide a discharge screw conveyor of a grain discharge device capable of preventing damage or deformation of a front discharge conveyor cylinder, buffering contact load efficiently, and allowing the front discharge conveyor cylinder to be contacted and stopped smoothly.SOLUTION: A discharge screw conveyor 10 of a grain discharge device 8 discharging grains in a grain tank 6 is divided into: a front discharge conveyor cylinder 10a including a discharge guide port cylinder 16 and a rear discharge conveyor cylinder 10b connected with a relay conveyor 12 side of the grain discharge device 8 on a rear end side. Both conveyors are connected via a connection pin 18 directed vertically so as to be switched between a straight work posture and a folded posture. A stopper member 20 contacting and stopping the front discharge conveyor cylinder 10a in folding is a tabular buffer member and a side wall 16a of the discharge guide port cylinder 16 contacts a tabular face of the stopper member 20 flatly, thereby rotation of the front discharge conveyor cylinder 10a is stopped.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2016,JPO&INPIT【課題】前部排出コンベア筒の損傷や変形を防止すると共に、接当負荷を効率よく緩衝し前部排出コンベア筒をスムーズに接当停止することができる穀粒排出装置の排出スクリューコンベヤを提供する。【解決手段】穀粒タンク6内の穀粒を排出する穀粒排出装置8の排出スクリューコンベヤ10を、排出ガイド口筒16を有する前部排出コンベア筒10aと、後端側を穀粒排出装置8の中継コンベア12側に接続した後部排出コンベア筒10bとに分割し、両者を上下向きの連結ピン18を介して真直作業姿勢と折畳み姿勢とに切換自在に連結するに、折畳み時に前部排出コンベア筒10aを接当停止させるストッパ部材20を、板状緩衝部材にすると共に、該ストッパ部材20の板状面に排出ガイド口筒16の側壁16aを平面的に接当させることにより、前部排出コンベア筒10aの回動を停止させる構成にした。【選択図】図2
