海底犁式挖沟机抱管组件研究

Study on pipe handling equipment of the submarine plough

海底犁式挖沟机是一种用于海底管道开沟铺设的专用水下作业设备,抱管组件是其中一个关键部件.它由提升机械手和导向装置组成,其主要功能是抓取和提升管道,并在犁铲挖沟时抱住管道,为挖沟机沿管线前进提供导向作用.对抱管组件进行了详细的结构设计,并对关键部件进行了力学分析和校核计算,验证了结构设计的合理性;然后对主要运动部件进行了动态仿真分析,证明抱管组件在开合过程中冲击较小;最后进行了犁式挖沟机试验样机的陆上试验,当牵引力为330 000N,挖沟速度为0.06m/s时,前后辊子的受力在理论值范围内.试验验证了犁式挖沟机抱管组件理论设计分析的正确性,为进一步工程优化设计提供了依据.

Submarine plough is a kind of special underwater machinery used as trenching and laying for pipeline in the offshore engineering, whose pipe handling equipment is a key part to pick up and deal with the pipeline in the trenching process. The pipe handling equipment is comprised of lifting grab and roller device, whose mechanical structure was designed, and working force analysis and strength calculation were discussed. Rationality of the mechanical structure design was verified by the stress and strain data from finite element analysis. Then dynamic simulation of the pipe handling equipment was carried out and its results indicated the impact was lesser in open and closed process of the grab and rollers. Finally, the experiment on land of the submarine plough was finished. The experiment indicated that measured forces of two teams of rollers were among theoretic values when trenching velocity was 0. 06 m/s, and rope pull was 330 000 N. These validate theoretical design and analysis of the pipe handling equipment is correct, which is beneficial to the optimal design of the engineering plough.