PROBLEM TO BE SOLVED: To solve the problem in which: since an upper cover which surrounds an upper part of a handling chamber of a thresher urges an engagement hook engaged with an engagement body in an engagement direction with a spring, it is required to operate the upper cover while withstanding an elastic force of the spring when opening the upper cover, and the operation becomes hard because an operation load is heavy.SOLUTION: A combine includes a fixing device 25 for fixing an upper cover 20 has an engagement body 26 arranged at a machine frame 24 side, and an engagement hook 27 arranged at the upper cover 20 side. In the combine, a spring 28 for urging the engagement hook 27 in a direction in which the engagement hook is engaged with the engagement body 26 is arranged and an abutting body 36 which separates the engagement hook 27 from the engagement body 26 by contacting the tip of the engagement hook 27, and a lock release mechanism 35 having an open operation lever 40 of the abutting body 36 are arranged.COPYRIGHT: (C)2015,JPO&INPIT【課題】脱穀装置の扱室上方を包囲する上部カバーは、係合体に係合する係合フックを係合方向にバネで付勢しているので、上部カバーをオープンさせるとき、バネの弾力に抗して操作しなければならず、操作加重が重く容易でないという課題がある。【解決手段】上部カバー20を固定する固定装置25は、機枠24側に設けた係合体26と上部カバー20側に設けた係合フック27を有し、係合フック27を係合体26に係合する方向に付勢するバネ28を設けて構成とすると共に、前記係合フック27の先端部に接触することで該係合フック27を係合体26から離脱させる当接体36と該当接体36のオープン操作レバー40を有するロック解除機構35を設けたコンバイン。【選択図】図3
