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今年2月26～28日,煤炭部基建司在萍乡市主持召开了BF—Ⅲ型罐笼防坠器鉴定会。参加会议的有来自全国科研、设计、矿山和制造厂等32个单位共70余名代表。代表们经过充分讨论一致认为:1、BF—Ⅲ型罐笼防坠器采用滚动摩擦楔形抓捕机构,具有良好的单向自锁性能,动作灵敏,抓捕可靠;2、井口脱钩试验和动负荷试验是成功的,效果良好;3、经过一年多时间的运行,效果较好。1984年3月,萍
February 26-28 this year, the Ministry of Infrastructure Construction in Pingxiang City, hosted a BF-Ⅲ-type cage anti-dropping device identification meeting. More than 70 delegates from 32 units including scientific research, design, mining and manufacturing plants nationwide participated in the conference. After full discussion, the deputies agreed that: 1, BF-Ⅲ cage anti-dropping device using rolling friction wedge arresting mechanism has a good one-way self-locking performance, action sensitive, reliable arrest; 2, wellhead decoupling test and dynamic load Test is successful, the effect is good; 3, after more than a year of operation, the effect is better. March 1984, Ping