| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce pulsation noise by turnably stretching a threshing feed chain on a driven sprocket and a following sprocket arranged at prescribed intervals to prevent the entanglement and vibration of the threshing feed chain. Ž<P>SOLUTION: An inscribed guide 48 neighboring to a floating sprocket 41b or driven sprocket arranged upstream of a traveling direction on a non-transporting action side (b) of a threshing feed chain 3, and inscribed to the threshing feed chain 3 extended toward the downstream of the traveling direction of the non-transporting action side (b) is installed, and a circumscribed guide 49 circumscribed to the threshing feed chain 3 is installed near the driven sprocket 42 or the floating sprocket arranged downstream of the traveling direction on the non-transporting action side (b). The threshing feed chain 3 is tensioned stepwise by protruding a part D contacting with the inscribed guide 48 and depressing a part E contacting with the circumscribed guide 49. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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