This invention relates to a combined harvester capable of accurately measuring the weight of a grain box, which is disposed with a guiding mechanism (12) guiding the front end part of the grain box (7) onto the weight detection device (11) when the grain box (7) is rotated from a maintenance position toward a storage position. In the combined harvester, the weight detection device (11) is disposed under a status that the grain box (7) located at a storage position and at a facing portion of a machine frame (2) to which a lower part of a grain conveying device (72) disposed to the bottom part of the grain box (7) the guiding mechanism (12) has a machine side guiding part (80), wherein the machine side guiding part (80) makes the front end of the grain box (7) raised temporarily along with the rotation of the grain box (7) from the maintenance position toward the storage position, and makes the front end of the grain box (7) lowered when the grain box (7) is located at the storage position, thereby making the bottom part of the grain box (7) placed on the weight detection device (11).本發明為聯合收割機,能夠準確地測量穀物箱的重量。設置有在穀物箱(7)從維護位置朝向儲存位置轉動時將穀物箱(7)的前端部引導到重量檢測裝置(11)上的引導機構(12),在該聯合收割機中,重量檢測裝置(11)設置於在穀物箱(7)位於儲存位置的狀態下,機體框架(2)的與該穀物箱(7)的底部設置的穀粒運送裝置(72)的下方面對的部位,引導機構(12)具有機體側引導部件(80),該機體側引導部件(80)使穀物箱(7)的前端部隨著穀物箱(7)從維護位置向儲存位置側轉動而暫時上升,在穀物箱(7)位於儲存位置時使穀物箱(7)的前端部下降,使該穀物箱(7)的底部載置於重量檢測裝置(11)上。7‧‧‧穀物箱7c‧‧‧定位銷7d‧‧‧卡定孔12‧‧‧引導機構21‧‧‧框架部件22‧‧‧第二框架部件23‧‧‧加強板(加強部件)71‧‧‧箱主體71a‧‧‧寬度減小部72‧‧‧螺旋輸送機(穀粒運送裝置)73‧‧‧箱側加強部件(加強部件)80‧‧‧機體側引導部件81‧‧‧第一上升傾斜部(第一傾斜部)82‧‧‧第二上升傾斜部(第一傾斜部)83‧‧‧水準部(第一水準部)84‧‧‧凹部85‧‧‧傾斜部(第二傾斜部)86‧‧‧螺栓(固定構件)90‧‧‧箱側引導部件91‧‧‧下方延伸部件92‧‧‧箱側上升傾斜部(第三傾斜部)93‧‧‧箱側水準部(第二水準部)94‧‧‧銷引導部件
