立坑巻索に生ずる縦振動について (第2報)
1961 年 77 巻 873 号 p. 165-172
詳細
1961 年 77 巻 873 号 p. 165-172
We have made researches on the vibration of winding ropes when they are braked in an emergency, picked-up while they are hanging freely, or accelerated by a periodical force on the ground of analytical results, which we have already gained in former studies (1st report).
Futhermore, we have investigated the effects of the shock absorber on the vibration, the influence of a tail rope or a head sheave on it and the decrease of vibration due to friction between cage and guide. We are going to give a few remarkable ones of the results we have obtained in our researches.
1) If the brake is conducted in a proper way, the vibration can be controlled and is not so large even if ropes are suddenly braked in an emergency.
2) When ropes hang freely are picked-up, or when ropes are accelerated by a periodical force, the vibration will become larger.
3) The shock absorber is considered to be effective only when a load is dropped into a cage.
4) There is no great error in regarding a tail rope as a weight, or a part of a cage.
