Study On The Design Of Unmanned Small Floating Body And Its Hoisting And Hoisting Device On The Sea

At present,China's marine monitoring equipment is developing rapidly,the development and application of various types of buoys,unmanned boats and deep-sea detectors have greatly increased China's monitoring and exploration efforts for the vast coastal areas and territorial seas,which make contributions to sustainable development.In order to compensate for the limitations of fixed mooring buoy,this thesis,starting from current technology of buoy,designs a multifunctional marine unmanned carrying floating body with a good stability of the buoy and self-driven power,so the navigation and dynamic positioning can be realized.Meanwhile,it designs a set of hoisting device with rapid withdrawing and dropping so as to achieve unmanned interference in construction sites.The complementary application of the design,the buoy and unmanned yacht will greatly improve the ocean monitoring capability and complete the task of various sea conditions.According to the requirements of the use and performance of the small carrying floating body,this design analyzes and demonstrates the revolving and non-revolving bodies of the floating body,determines the shape of wet surface through comparative analysis of the performance of the three excellent buoys.Finally,it makes the small carrying floating body determine the rotary body discus-shaped bottom structure equipped with full rotary propeller and the power system of multi-jet pump forms as well as the main control system and communication measurement system of the upper and lower crew joint control.According to the navigation and location requirements of floating body,the resistance simulation test of floating body with different main body diameter and bottom diameter is carried out,and the driving force for floating body navigation and dynamic positioning is determined.The main mechanical and electrical equipment are analyzed and determined,and the principle and strategy suitable for the navigation and positioning of the floating body are put forward.The preliminary design according to the general layout of the program,through the design of floating body and the upper structure of the bottom bracket,and to determine the steel weight weight and outfitting of each scheme,so that the relationship between weight and center of gravity displacement check and floating heart.The optimal scheme is determined by the stability checking,the inherent cycle calculation and the resistance calculation under the loading condition.The lifting device is designed and researched,and a hoisting device that can accurately connect with the floating body and lock is designed under low sea condition.The size and form of the hoisting device are determined by studying the rocking amplitude of the floating body under low sea conditions.Combined with the floating body recycling scheme,the force analysis of the main connecting components of the floating body joint and the hoisting device is carried out to ensure the strength of the main force members.The relevant research results in this thesis will provide a certain reference value for the development and design and related research of the unmanned small floating body and its hoisting device.