PROBLEM TO BE SOLVED: To improve dust exhaust efficiency inside a conveyance elevator for supplying reaped grain culm from a reaper to a thresher.SOLUTION: A conveyance elevator (20) includes a conveyor (25) in a conveyance case (24) that is formed of left/right side plates (21), a baseplate (22), and a top plate (23) into a square cylindrical shape, and a dust suction/exhaust fan (33) is provided at the top plate (23) for sucking and exhausting dust in the conveyance case (24). The dust suction/exhaust fan (33) includes, at a rear side thereof, a plate-shaped dust suction/exhaust guide body (41) that guides the dust flowing therein from a supply port (34), so as to be sucked in the dust suction/exhaust fan (33) by an action of the dust suction/exhaust fan (33) for sucking the inside of the conveyance case (24). The upper part of the guide body (41) is fitted to the rear part of a frame body (38) of a dust suction/exhaust box (35) incorporating the dust suction/exhaust fan (33) in the top plate (23).COPYRIGHT: (C)2015,JPO&INPIT【課題】刈取装置から脱穀装置へ刈取穀稈を供給する搬送エレベータ内の塵埃の排出効率を向上させる。【解決手段】搬送エレベーター(20)を、左右の側板(21)と底板(22)と天板(23)から四角筒形状に形成した搬送ケース(24)内に搬送コンベア(25)を設けた構成とし、搬送ケース(24)内の塵埃を吸引して排塵する吸引排塵ファン(33)を天板(23)に設け、吸引排塵ファン(33)の後側に、吸引排塵ファン(33)による搬送ケース(24)内の吸引作用によって供給口(34)から流入する粉塵が、この吸引排塵ファン(33)に吸引されるように案内する板状のガイド体(41)を設ける。また、ガイド体(41)の上部を、天板(23)における吸引排塵ファン(33)を内蔵した吸引排塵ボックス(35)の枠体(38)の後部に取り付ける。【選択図】図6
