COMBINE HARVESTER

PROBLEM TO BE SOLVED: To solve a poor drivability problem of a combine harvester caused by performing slow traveling operation and reaping drive operation at the same time in the case of entering into a field. SOLUTION: A reaping apparatus is driven at a variable speed with a dedicated hydrostatic continuously variable transmission 21 for reaping and transportation to increase and decrease rotational speed synchronously with traveling speed. A hydrostatic continuously variable transmission 20 for traveling has a construction to be accelerated or decelerated according to the extent of tilting operation of a main shift lever 70 by detecting the operation position of the main shift lever 70 by an operating position detection means 71 and controlling the speed of the hydrostatic continuously variable transmission 20 for traveling by the signal of the detection means. A neutral zone T having a prescribed width is formed at an operation position in an operation groove 72 of the main shift lever 70 between the forward moving side and backward moving side of the machine body. Drive of the reaping apparatus 4 by the hydrostatic continuously variable transmission 21 for reaping and transportation is started when the main shift lever 70 is positioned at a prescribed position T' at a backward moving side relative to the intermediate position of the neutral zone T and vehicle speed pulses detected by the start of traveling motion of the traveling apparatus 3 are detected for a prescribed time or longer by a detection part 73. COPYRIGHT: (C)2011,JPO&INPIT