To provide a combine that can easily adjust an interval formed between a cylindrical part of a grain lifting cylinder for returning secondary grain to a threshing device and a conveyance spiral.SOLUTION: A second grain lifting cylinder (41) is provided in the downward sloped manner. The second grain lifting cylinder (41) is formed of a lower metal (43) connected to the rearward of a right wall (4B), an upper metal (44) connected to the front part of the right wall (4B), a cylindrical body (45) for connecting the upper metal (44) with the lower metal (43), and a conveyance spiral (46) provided at an inner circumferential part of the cylindrical body (45). An upper part of the lower metal (43) and a lower connection part (47) of the cylindrical body (45) are movably fixed in the vertical direction to the rotary shaft (46A) of the conveyance spiral (46). A lower part of the upper metal (44) and an upper connection part (48) of the cylindrical body (45) are movably fixed in the vertical direction to the rotary shaft (46A) of the conveyance spiral (46). The rotary shaft (46A) is rotatably fixed to the upper part of the lower metal (43) and the lower part of the upper metal (44).SELECTED DRAWING: Figure 8【課題】脱穀装置に２番物を還元する揚穀筒の筒部と搬送螺旋の間に形成される間隔を容易に調整することができるコンバインを提供する。【解決手段】第２揚穀筒（４１）を後下がり傾斜に設け、第２揚穀筒（４１）を、右壁（４Ｂ）の後部に連結される下部メタル（４３）と、右壁（４Ｂ）の前部に連結される上部メタル（４４）と、下部メタル（４３）と上部メタル（４４）を連結する筒体（４５）と、筒体（４５）の内周部に設けられた搬送螺旋（４６）で形成し、下部メタル（４３）の上部と筒体（４５）の下部連結部（４７）を、搬送螺旋（４６）の回転軸（４６Ａ）に対して上下方向に移動可能に固定し、上部メタル（４４）の下部と筒体（４５）の上部連結部（４８）を、搬送螺旋（４６）の回転軸（４６Ａ）対して上下方向に移動可能に固定し、回転軸（４６Ａ）を下部メタル（４３）の上部と上部メタル（４４）の下部に回転自在に固定した。【選択図】図８
