Study On Davit Of Ship Passive Wave Compensation Technology

Davit is an important device used on receiving and dropping boat on ship. Davit installed with wave compensation system can compensate relative movement between ship and boat. Avoid impact caused by loosened rope. Reduce the impact to receiving and dropping boat caused by ocean wave. Ensure the safety of equipment and personnel.This paper make study on passive wave compensation as follow: First, on the basis of analysis of the basic principles of passive wave compensation, summary lifting and passive conditions characterized characteristic. Compensation rate and compensation tension is the focus of wave compensation technology, so conduct in-depth study on the compensation rate and compensation tension. Analyze the affect to relative movement rate caused by ship movements and davit installation location and simulation and analysis. On the basis of study on the force of boat. Analyze the impact of compensation tension on the boat rocking and simulation and analysis. Second, analyze accumulator passive wave compensation device. On the basis of the theoretical analysis, establish its mathematical model. For the compensation rate, compensation tension and lack of compensation for distance of accumulator compensation device design dual-displacement motor passive wave compensation device .Use constant motor torque to achieve constant tension compensation. Variable conditions of the motor achieve the rope with the motion compensation. Use dual-emission characteristics of variable displacement motor to achieve compensation and receiving and dropping boat mode conversion. On the basis of the theoretical analysis, establish its mathematical model. Through the study of mathematical models and simulation analyze the affect of parameters of change on system performance. Last. Simulate double-displacement motor passive wave compensation device. Analyze the impact of pressure relief valve, fuel supply and motor displacement parameters on the system.Analysis showed that the double-displacement motor davits passive wave compensation technique theoretically feasible, but the practical application of project results to be verified.