| 摘要 |
PROBLEM TO BE SOLVED: To provide a main rope supporting pole strong enough to prevent the bending due to impact when a worker falls from a high-lift working site, and lighter to allow the worker to easily handle it with manual work.SOLUTION: The main rope supporting pole includes a squarely tubular supporting pole body, and a main rope holding fitting mounted at the upper end thereof. The supporting pole body is a tapered tube whose cross section is narrower toward the upper side, and on the inner face of which a reinforcing material is mounted. |
