海底犁式挖沟机结构设计及仿真分析
发布时间：2018-08-10 17:27
【摘要】：海底犁式挖沟机是一种挖沟埋管水下作业机械，，广泛应用于海底油气管道工程，用于保护海底管线。本课题来源于中国海洋石油工程公司的“硬质粘土挖沟技术与装备研究”项目，目的是研制出具有自主知识产权的用于海底开沟埋管的犁式挖沟机。 本文首先介绍了海底挖沟方法及国内外挖沟机械研究现状，根据犁式挖沟机工作原理及设计指标建立了整机ADAMS虚拟样机，通过仿真分析明确了整机的受力情况，并为后续关键结构设计提供了理论依据。在此基础上，首先完成了行走机构的设计，研究了不同情况下滑靴底板的下陷深度及滑靴升降速度对管道受力的影响；其次完成了转向机构与拖拽缆绳的设计，确定了拖拽缆绳绳长，并通过仿真得出不同拖拽力大小及绳长对拖拽缆绳悬垂状态的影响，同时完成对转向臂疲劳强度的校核；最后完成了具有自锁功能的吊具结构设计，分析了锥形斗结构尺寸对其导向作用的影响，同时仿真分析了吊具的工作状态，对其可靠性进行了评估。 本文的研究与设计工作，是海底犁式挖沟机工程样机研制的一部分，其仿真分析的结果对整机的设计具有重要的实际意义。
[Abstract]:Submarine ploughing machine is a kind of underwater working machine which is widely used in submarine oil and gas pipeline engineering and is used to protect submarine pipeline. This subject comes from the project of "Research on Technology and equipment of hard Clay digging ditch" of China National Offshore Oil Engineering Company. The purpose of this project is to develop a plough trench excavator with independent intellectual property rights used for digging and burying pipes under the sea floor. Firstly, this paper introduces the method of digging trench and the research status of trench digging machine at home and abroad. According to the working principle and design index of plough trench excavator, the ADAMS virtual prototype of the whole machine is established, and the mechanical condition of the whole machine is determined by simulation analysis. It also provides the theoretical basis for the subsequent key structure design. On this basis, first of all, the design of walking mechanism is completed, and the influence of the subsidence depth of skidding boot floor and the speed of slide boot lifting on the stress of pipeline is studied, and the design of steering mechanism and towing cable is completed. The length of towing rope is determined, and the effects of different drag force and rope length on the drag-rope drag-down state are obtained by simulation. At the same time, the fatigue strength of steering arm is checked. Finally, the structure design of hoist with self-locking function is completed. The influence of conical bucket structure size on its guiding action is analyzed, and the working state of the crane is simulated and its reliability is evaluated. The research and design work of this paper is a part of the prototype development of submarine plough trench excavator. The results of simulation analysis are of great practical significance to the design of the whole machine.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TE973;P756.2
本文编号：2175657
[Abstract]:Submarine ploughing machine is a kind of underwater working machine which is widely used in submarine oil and gas pipeline engineering and is used to protect submarine pipeline. This subject comes from the project of "Research on Technology and equipment of hard Clay digging ditch" of China National Offshore Oil Engineering Company. The purpose of this project is to develop a plough trench excavator with independent intellectual property rights used for digging and burying pipes under the sea floor. Firstly, this paper introduces the method of digging trench and the research status of trench digging machine at home and abroad. According to the working principle and design index of plough trench excavator, the ADAMS virtual prototype of the whole machine is established, and the mechanical condition of the whole machine is determined by simulation analysis. It also provides the theoretical basis for the subsequent key structure design. On this basis, first of all, the design of walking mechanism is completed, and the influence of the subsidence depth of skidding boot floor and the speed of slide boot lifting on the stress of pipeline is studied, and the design of steering mechanism and towing cable is completed. The length of towing rope is determined, and the effects of different drag force and rope length on the drag-rope drag-down state are obtained by simulation. At the same time, the fatigue strength of steering arm is checked. Finally, the structure design of hoist with self-locking function is completed. The influence of conical bucket structure size on its guiding action is analyzed, and the working state of the crane is simulated and its reliability is evaluated. The research and design work of this paper is a part of the prototype development of submarine plough trench excavator. The results of simulation analysis are of great practical significance to the design of the whole machine.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TE973;P756.2
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