| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that a conveyance speed of a feed chain to a threshing device is optimized by shifting gears on the basis of the conveyance speed of reaped grain culms of a reaping device, and thereby a transmission for exclusive use of the feed chain is needed to increase a production cost.SOLUTION: A feed chain 13 is arranged which supplies and conveys grain culms reaped by a reaping device 4 in a front part of a machine body to a threshing chamber of a threshing device 3 and the reaping device 4 is driven by gear shift synchronization synchronized in a travelling speed of a travel device 2 by a hydraulic continuously variable transmission 21. The feed chain 13 is driven by two system transmission paths of a gear shift rotation transmission path D for transmitting the gear shift synchronization rotation transmitted to the reaping device 4, and a constant speed rotation transmission path T transmitted to the threshing device 3 at a constant gear ratio. The gear shift rotation transmission path D and the constant speed rotation transmission path T are switched by switching ON/OFF a gear shift clutch 23 and a constant speed clutch 24 by a switch motor 25 in the combine.SELECTED DRAWING: Figure 3 |
