海上绳索与浮标连接装置研究

Study on connecting device of marine rope and buoy

传统的绳索与浮标存在安装时间长、操作不方便等问题。通过研究,以满足绳索与浮标受力为前提,以缩减安装时间和提高工作效率为目标,设计一种可旋转式绳索与浮标连接装置。介绍连接装置的工作原理和性能优势,并以海洋工程中大、中型工程船常用的76 mm绳索为例,对连接装置进行详细设计,分别用理论计算和有限元分析对内、外卡进行校核,理论计算得出内卡危险截面最大应力为192.0 MPa,外卡危险截面最大应力为363.2MPa,而有限元分析得出内卡最大应力为201.3 MPa,外卡最大应力为358.2 MPa,理论计算结果和有限元分析结果基本一致,论证了该连接装置设计满足使用要求。

Traditional installation between the rope and buoy takes long time and the operation is inconvenient. Through research, on the condition of meeting force status of the rope and buoy, with the target of shortening installation time and improving work efficiency, a rotary connecting device for buoy and rope is designed. The work principle and performance advantage of this connecting device are introduced, and based on an example of diameter 76 mm rope which is usually used in large and medium engineering vessels in ocean, a detailed design is given for the connecting device, utilizing both theoretical calculation and finite element analysis （FEA） to verify inside and outside jaws, it is concluded that maximum stress on dangerous section of the inside jaw is 192.0 MPa, and the maximum stress on dangerous section of the outside jaw is 363.2 MPa, the maximum stress on inside jaw and outside jaw with finite element analysis （FEA） are respectively 201.3 MPa and 358.2 MPa, the results from both calculation and FEA have small difference, this connecting device is proved to meet the application requirement.