Problem to be solved: to provide a tank tank structure of a combine which is constituted by a concise and lightweight bracket structure and is detachably connected to the fixed tank while taking out the strain at the edge of the opening cylinder and composing the grain tank.The inner surface of the opening cylinder 18B of the resin tank 18The long straight frame member 20 and the short straight frame member 21 are attached to the rivet 23 by the rivetsThe short side bracket 22c of the bent frame member 22 is riveted to the short side portion 18e and the short straight frame member 21 in the corner portion 18C of the opening edge edge portion 18B.The long side bracket 22b is riveted to the long side portion 18D and the long straight frame member 20 by riveting.A cylindrical edge bracket 19 is formed in the opening edge edge portionWhen the cylindrical edge bracket 19 is inserted into the upward opening 11K of the fixed tank 11, the long straight frame member 20 and the short straight frame member 21 are bolted to each other by a plurality of bolts 26, respectively.The tank 12 is connected to the fixed tank 11 to form the tank 4.Diagram【課題】着脱タンクを簡潔軽量なブラケット構成によって、開口筒縁部の歪み取りをしながら固定タンクに着脱自在に連結して穀粒タンクを構成するコンバインの穀粒タンク構造を提供する。【解決手段】樹脂タンク１８の開口筒縁部１８ｂ内側面に、長真直枠部材２０と短真直枠部材２１とをリベット２３によって取付けると共に、開口筒縁部１８ｂのコーナー部１８ｃに屈曲枠部材２２の短辺側ブラケット２２ｃを短辺部１８ｅと短真直枠部材２１にリベット締結し、長辺側ブラケット２２ｂを長辺部１８ｄと長真直枠部材２０とにリベット締結することにより、開口筒縁部１８ｂに筒縁部ブラケット１９を構成し、該筒縁部ブラケット１９を固定タンク１１の上向き開口部１１ｋに挿入した状態で複数のボルト２６によって長真直枠部材２０と短真直枠部材２１とをそれぞれボルト締結することにより、着脱タンク１２を固定タンク１１に連結して穀粒タンク４を構成する。【選択図】図７
