A combine harvester provided with a speed-changing/power-transmitting device that comprises: a hydrostatic stepless speed-change unit into which the drive force from an engine is input and which changes the speed of the drive force and a planetary power-transmission unit which combines the drive force from the engine and the output of the stepless speed-change unit and outputs the combined drive force to a travel device, wherein the weight of a power-transmission case can be inexpensively reduced. In this combine harvester, a stepless speed-change case section (95) of a power-transmission case (35), said stepless speed-change case section (95) housing a stepless speed-change unit (40), is integratedly formed with a planetary power-transmission case section (96) of the power-transmission case (35), said planetary power-transmission case section (96) housing a planetary power-transmission unit (50). The power-transmission case (35) has provided therein a partition wall (97) for separating a stepless speed-change chamber (95A) of the stepless speed-change case section (95), said stepless speed-change chamber (95A) housing the stepless speed-change unit (40), and a planetary power-transmission chamber (96A) of the planetary power-transmission case section (96), said planetary power-transmission chamber (96A) housing the planetary power-transmission unit (50).La présente invention concerne une moissonneuse-batteuse dotée dun dispositif de transmission/transmission de puissance comprenant : une section de transmission continue hydrostatique qui reçoit la force dentraînement du moteur et modifie la vitesse de cette force et une section de transmission de puissance planétaire qui combine la force dentraînement du moteur et la sortie de la section de transmission continue afin de délivrer la force dentraînement à un dispositif de déplacement, le poids du boîtier de transmission de puissance pouvant être réduit sans coût supplémentaire. Dans la moissonneuse-batteuse de la pré
