| 摘要 |
<p>PURPOSE:To prevent a guide roller upper flange from coming into contact with an upper drum in a state where a pole base is loaded in the neighborhood of a drum. CONSTITUTION:A guide cap 3 provided with diameter a little larger than that of the upper drum is mounted on the top panel of the upper drum 1, and the guide roller upper flange 11 is brought into contact with the guide cap 3.</p> |
