针对大型船舶吊舱推进器、舵柄等大型构件空间轴线对中需求,研制具备多自由度的安装平台.通过机构设计实现多自由度运动解耦,结合工况特点拟定多油缸同步控制方案,并开展结构优化设计,满足坞内安装空间要求.进行工厂试验后,验证方案合理性,并完成2台16.8 MW吊舱推进器的安装.

面对我国海上风电开发的重大需求及施工装备技术性能的严重不足,从工程实际需求出发,充分吸收国内外自升式平台优点,并综合考虑我国沿海地质与海况等条件,研制我国新一代海上风电安装船"港航平9".介绍该平台的总体布置及参数、关键设备的设计思想和方案,总结其设计特点,并对该平台的施工工艺进行说明.通过工程实践检验,"港航平9"施工实用性强,所形成的工艺施工质量满足工程项目要求,施工安全性及效率相比传统方式有较大提高,成本也相对较低.

结合规范,对插销升降系统的主要工况、结构材料及安保功能进行了分析,确定了插销升降系统的主要计算工况、强度校核基本原则、结构材料选型原则及重要的安保功能,对插销升降系统的总体设计具有重要的指导意义.

The leakproofness of revolving end face of the deep underwater mooring winch is usually poor.A dynamic sealing unit was developed for revolving end face of the mooring winch.The physical models of static sealing ring and dynamic sealing ring in this unit were established to simulate the deformation, stress and contact gap of the sealing ring under different pressure.The technique feasibility of the dynamic sealing unit for revolving end face of mooring winch was verified.

The maximum horizontal load and bending moment of one leg was given based on hydraulic yoke and pin jacking mechanism of one type of self-elevating platform.The imbalance load was calculated by ANSYS software to check the structural strength of fixed cross-head,the result met the requirement of design and rules.

Rack and pinion jacking system center distance error will influence meshing backlash of rack and pinion.To solve the problem,a type of gearbox was designed which can adjust center distance.The result showed that through set the front and rear bearing of gearbox eccentric to achieve adjusting center distance.Rack and pinion mesh backlash can meet the operating requirement through gearbox center distance adjusting technology.This gearbox center distance adjusting technology had been ap-plied in the electric rack and pinion jacking system.

The invention discloses a hydraulic lifting device, and belongs to the field of ocean engineering. The device comprises a jacking frame sleeved on a pile leg, a fixed ring beam, a lifting cylinder, a moving ring beam, a plurality of first inserted pin modules arranged on the fixed ring beam, and a plurality of second inserted pin modules arranged on the moving ring beam, wherein both ends of the lifting cylinder are respectively connected with the fixed ring beam and the moving ring beam; one end of the jacking frame is connected with the fixed ring beam, and the other end of the jacking frame is provided with a connecting structure for detachably connecting with a ship body. The jacking frame and the ship body are detachably connected, so that the hydraulic lifting device is simple in connection and convenient to detach; and the lifting device is compact in inner structure, small in size of integral structure and convenient to transport integrally; the hydraulic lifting device is directly assembled with the ship body after reaching the destination; and all structures inside are not required to be assembled again, so that the work load is reduced.