PROBLEM TO BE SOLVED: To facilitate the manufacture of a door-receiving frame and simultaneously enable the securement of high airtightness as a cabin.SOLUTION: The boarding operation portion structure of a combine harvester manufactured by forming a boarding operation portion 2 at one of the right and left side places of a travel machine frame 1, disposing a cabin 30 in the boarding operation portion 2, disposing a door 44 and a door-receiving frame 45 for forming a boarding gate 43 and receiving the outer peripheral edge portion 44A of the door 44, at one of the right and left edge portions of the boarding operation portion 2, and disposing an engine cover 21 for supporting an operation seat 16 disposed at the rear part of the boarding operation portion 2 and covering an engine arranged below the rear portion of the operation seat 16 at the rear lower part of the boarding operation portion 2, includes a side cover portion 26 for forming the lateral outer side of the engine cover 21 in the engine cover 21, and forming a door-receiving portion 45e for receiving the lower rear edge portion 44e of the door 44 at the front side edge portion 26A of the side cover portion 26 so that the side cover portion 26 acts as part of the door-receiving frame 45.COPYRIGHT: (C)2013,JPO&INPIT【課題】ドア受け枠の製造を容易にしながらキャビンとして高い気密性を確保できるようにする。【解決手段】走行機体1の左右一側箇所に搭乗運転部2を形成し、搭乗運転部2にキャビン30を装備し、搭乗運転部2の左右一端部に、ドア44と、乗降口43を形成するとともにドア44の外周縁部44Aを受け止めるドア受け枠45とを配備し、搭乗運転部2の後下部に、搭乗運転部2の後部に備えた運転座席16を支持するとともに運転座席16の後下方に配備したエンジンを覆うエンジンカバー21を備え、エンジンカバー21にエンジンカバー21の横外側面を形成する横カバー部26を備え、この横カバー部26の前側縁部26Aにドア44の下側後縁部分44eを受け止めるドア受け部45eを形成して、横カバー部26がドア受け枠45の一部として機能するように構成した。【選択図】図8
