| 摘要 |
PROBLEM TO BE SOLVED: To provide a thresher capable of conducting the proper automatic opening/closing operations of the dust-exhaustion control element at a pneumatic dust-exhaustion path by a small-scale operating mechanism while easily avoiding maloperation of the operating mechanisms. SOLUTION: The thresher includes a dust exhaustion path A with a fan via which dust from a separatory section is exhausted out of the machine body, the pneumatic dust-exhaustion path B via which dust from the separatory section is exhausted out of the machine body by separatory wind, and a dust-exhaustion controller 60 functioning to open/close the pneumatic dust-exhaustion path B. This thresher also include an association mechanism 70 joined to the dust-exhaustion controller 60 by ranging from the conveyance guide rod 22 of a waste straw conveyor 20, via above the dust exhaustion path A and the outside opposite to a threshing feed chain side, to the opposite side to the threshing feed chain side of the dust-exhaustion controller 60. In this thresher, the conveyance guide rod 22 and the dust-exhaustion controller 60 are made to associate with each other so as to subject the dust-exhaustion controller 60 to switching operation to open-mode as the conveyance guide rod 22 moves so as to go a set space or more apart from an endless revolving chain 21, whereas, to closed-mode as the conveyance guide rod 22 moves so as to be situated less than the set space apart from the endless revolving chain 21. COPYRIGHT: (C)2009,JPO&INPIT
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