| 摘要 |
<p>PURPOSE:To provide the sufficient stability of strength, convenient movability and operation performance by composing a stay device of a plurality of cylindrical bodies having different diameter, strip plates having each circular section, feeding mechanism for the strip plates, and a driving device. CONSTITUTION:In the extension erection from a contraction accommodation state, a taking-up driving mechanism is driven to drive out the strip plates 6 and 7 taken up on the rolls 8 and 9 from the rolls 8 and 9. When the strip plates 6 and 7 are driven out, the top edges 6a and 7a of the strip plates 6 and 7 which are held in the nipped state by the guide slits 4j-1j of respective bottom plates 4c-1c and the guide slits 4k-1k of the intermediate partitioning plates 4d-1d starts rising, and a cylindrical body 1 having the min. diameter starts rising. When the cylindrical body 1 reaches the thick joint part 2d in the upper part of the cylindrical body 2 according to the driven-out strip plates 6 and 7, the lower flange part 1f of the cylindrical body 1 contacts an engaging stage part 2g formed at the lower edge of the joint part of the cylindrical body 2, and rises, together with the cylindrical body 2. Similarly, the cylindrical bodies 3 and 4 are extension-assembled.</p> |
