双向自锁抓绳机构的设计分析

Analysis and Design of A Bidirectional Self-locking Rope Grasping Mechanism

基于凸轮式上升器基本机理,设计具有双向摆动自锁夹紧的抓绳机构系统,对抓取力学特性展开设计分析,并开展样机试制与试验。结果表明抓取机构具有体积小、结构简单、夹紧可靠、爬升能力强等优点,且由于与绳索抓取界面无相对滑移,具有较好的抓取特性。

By investigating the working principle of cam grasping ascenders,a new type of rope grasping mechanism is proposed to achieve bidirectional self-locking when catching a rope.It is critical and important for the crossing devices moving along a preset life-saving rope passage.The design and analysis of grasping mechanical characteristics are carried out in this paper firstly;then,detailed researches are investigated based on the development of a prototype and running test.The results show that the grab mechanism has the advantages of small size,simple structure,reliable clamping and strong climbing ability.