| 摘要 |
PROBLEM TO BE SOLVED: To smoothly discharge a transfer object even with a discharging auger having a smoothly extensible structure. SOLUTION: A rotary shaft cylinder 23 provided with a spiral blade 24 is inserted in a stationary cylinder 21 and the tip end of the shaft cylinder 23 is supported by a bearing 25 placed at the tip end of the stationary cylinder 21. A mobile rotary shaft 27 is inserted into a mobile cylinder 22 and the tip end of the mobile rotary shaft 27 is supported by a bearing 28 placed at the tip end of the mobile cylinder 22. Multiple bosses 29 are fit on the mobile rotary shaft 27 in a manner slidable in longitudinal direction and unable to rotate relatively to each other. A spiral blade 31 is made to be integrally rotatable with the mobile rotary shaft 27 through the boss 29. The base part of the mobile rotary shaft 27 is fit on the boss 29 at the tip end in the rotary shaft cylinder 23 in a manner slidable in longitudinal direction and unable to rotate relatively to each other.
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