PROBLEM TO BE SOLVED: To solve a problem that when a predetermined rising condition is established, a machine body rises unnecessarily in a state where rising of the machine body is not necessary, though it is for raising the machine body.SOLUTION: A combine harvester 1 includes: a machine body 2 a pretreatment part 3 provided on the front of the machine body 2 to freely elevate a multi-lever 25 for elevating the pretreatment part 3 a traveling part 8 provided on a lower part of the machine body 2 a machine body elevating mechanism 17 for elevating the machine body to a ground plane of the traveling part 8 and a control part 32 for controlling the machine body elevating mechanism 17. The control part 32 includes: machine body rising control means for raising the machine body 2 when a predetermined condition is established and machine body height return control means for returning the machine body 2 to the height before rising when a predetermined rising condition is not established after the machine body is raised by the machine body rising control means. The predetermined rising condition includes a condition that at least a trigger switch 29 provided on the multi-lever 25 is in an on-operation state.COPYRIGHT: (C)2014,JPO&INPIT【課題】所定の上昇条件が成立したとき、機体を上昇させるものでありながら、機体の上昇が必要ない状況で機体が無用に上昇するという問題を解消する。【解決手段】機体2と、機体2の前部に昇降自在に設けられる前処理部3と、前処理部3を昇降操作するマルチレバー25と、機体2の下部に設けられる走行部8と、走行部8の接地面に対して機体を昇降させる機体昇降機構17と、機体昇降機構17を制御する制御部32と、を備えるコンバイン1であって、制御部32は、所定の上昇条件が成立したとき、機体2を上昇させる機体上昇制御手段と、機体上昇制御手段による機体上昇後、所定の上昇条件が成立しなくなったとき、機体2を上昇前の高さに復帰させる機体高さ復帰制御手段とを備え、所定の上昇条件には、少なくともマルチレバー25に設けられるトリガースイッチ29がON操作状態であるという条件が含まれる。【選択図】図8
