摘要：随着海洋的不断发展，海洋平台研发正在不断取得进步，大量的介质管线存在于平台上许多相对运动的部件之间，这些介质管线主要用于传递力、数据、气体、水等，由于海洋工作环境的恶劣和不确定性，需要对这些介质管线进行很好的保护，海工平台用多层多管线大型钢制拖链系统及其试验胎架的研发已经迫在眉睫，成为了海工设备研发的关键点。但目前市场上的拖链系统及其试验胎架大都结构设计简陋，适用性单一，强度不够，且不稳定，都无法满足海洋工作平台对拖链系统及其试验胎架的要求，亟待改进。

为了解决现有技术中存在的不足，本次毕业设计提出一种海工平台用多层多管线大型钢制拖链系统及其试验胎架。其中拖链系统结构合理，稳定性和适用性强，方便进行修理维护，电缆与在拖链内部链杆的相互影响摩擦能被有效规避，充分保护电缆在拖链往复运动的过程中不受损伤。其中拖链牵引装置采用钢缆来传递力，能实现往复运动，且整个运动过程平稳。动力侧支架和尾端支架通过拖链底盘连接在一起，通过钢结构来实现内力的相互传递，所以整个装置不需要和地面进行铆接，避免了损坏地面。整个装置通过撑杆用紧固件连接在一起，拼装简便，且容易搬运。

本文对所设计的海工平台用多层多管线大型钢制拖链及其试验牵引装置进行了详细的介绍，对其各部分组成进行了细致的讲解，对该拖链系统及其牵引装置进行了驱动动力匹配计算，完成了电动机、减速机和变速机的选型工作以及柔性绳轮摩擦传动计算，对关键件进行了有限元分析，实现了其强度校核，对拖链系统进行了相关制造工艺性分析。

关键词：拖链系统，试验胎架，结构设计，有限元

Abstract：With the continuous development of the ocean, offshore platform research and development is constantly making progress, a large number of media pipeline exists in the platform between many relatively moving parts, these medium pipeline is mainly used for transmission of force, data, gas, water, Environmental harshness and uncertainty, the need for these media pipeline for good protection, marine platform with multi-layer multi-line large steel towline system and its test tire frame research and development has been imminent, has become a marine equipment research and development key point. However, the towline system and its test towers on the market are mostly simple and constructable. The applicability is simple, the strength is not enough, and the stability is not enough to meet the requirements of the marine working platform for the towline system and its test tire.

In order to solve the shortcomings of the existing technology, this graduation design of a marine platform with multi-layer multi-line large steel towline system and its test tire frame. Which towline system structure is reasonable, stability and applicability, easy to repair and maintenance, cable and dragline in the internal chain of the interaction between the friction can be effectively circumvented, the full protection of the cable in the towline reciprocating process without damage The Which towline traction device using cable to transmit force, to achieve reciprocating motion, and the whole movement process is

smooth. Power side bracket and tail bracket through the towline chassis connected together through the steel structure to achieve the mutual transmission of internal force, so the whole device does not need to rivure with the ground to avoid damage to the ground. The entire device is fastened by fasteners with braces, which are easy to carry and easy to carry.

In this paper, the design of the offshore platform with multi-layer multi-line large steel towline and its test traction device for a detailed introduction to the composition of its various parts of a detailed explanation of the towline system and its traction device The driving force matching calculation, the completion of the motor, reducer and transmission selection work and flexible rope wheel friction drive calculation, the key parts of the finite element analysis, to achieve its strength check, the drag chain system was related Manufacturing process analysis.