Regarding the issue of the first domestic double trunnions cutter suction dredger"TianKun"not being able to independently complete the entire process of switching the upper and lower trunnions on the construction location,the two key components of the upper and lower suction pipelines and maintenance platform that affect on-site switching have been retrofit designed to improve the speed and convenience of the whole process of ladder position switching.A retrofit design scheme was proposed based on the original ship structure,which uses the rotation of the ladder to drive specialized diagonal short pipes to realize pipeline connection below the waterline,and uses hydraulic cylinders to drive the overall lifting of the maintenance platform to realize the location matching between the maintenance platform and the ladder,and the effectiveness and reliability of the redesigned components are analyzed and verified through indoor model tests and finite element simulations.The results show that the redesigned pipeline device can effectively center and seal,the redesigned maintenance platform structure is reasonable,and the strength and stiffness meet the requirements for use,which provides an effective solution for the improvement of double trunnions cutter suction dredgers such as"TianKun",and can also provide a reference for future new ship design.
维普
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