| 摘要 |
PROBLEM TO BE SOLVED: To provide a grain exhaust device for a combine harvester, capable of extending and contracting smoothly by decreasing interference between the inside surface of the cylinder junction of a lower cylinder and the outside surface of an upper cylinder. SOLUTION: This grain exhaust device has a lower cylinder 28 integrally constructed by connecting plural cylinders 28a and 28b. The lower cylinder 28 is externally fitted to an upper cylinder 27 in the longitudinal direction freely slidably and is formed to set its junction between the cylinders 28a and 28b at lower side by a specified distance L from the lower end of the upper cylinder 27 when the lower cylinder is slid to the upper end point.
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