| 摘要 |
PROBLEM TO BE SOLVED: To provide a combine harvester for accurately driving a front processing unit during travel at a low reaping speed, and preventing the conveying disturbance of grain stalks. SOLUTION: In the combine harvester including reaping-driving means (51) for driving a reaping portion (5) at variable speed and a controller (64) for controlling the reaping-driving means (51) and having the controller (64) provided with vehicle-speed-associated driving means (B, C) for controlling the reaping-driving means (51) in association with vehicle speed, the controller (64) includes constant-speed driving means (A) for controlling the reaping portion (5) so as to drive at low speed (V1) irrespective of the traveling speed of a travelling machine body, and a driving operation portion (8) includes a switching operation device (30) for switching driving from the vehicle-speed-associated driving means (B, C) to the constant-speed driving means (A), so that the constant-speed driving means (A) switches the reaping portion (5) to the low-speed (V1) driving on the basis of the ON operation by the switching operation device (30), and gradually accelerates the reaping portion (5) when the ON state is kept. COPYRIGHT: (C)2011,JPO&INPIT
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