Research On Underwater Mechanical Hydraulic Torque Tool System Design And Mechanism

The ROV external tool is an important part of assisting ROV to complete a series of complex underwater work.It is mainly divided into four categories: cutting,probing,screwing,and pouring,which play an important role in marine engineering.In this article,through a comparative analysis of the structure,working characteristics and feedback methods of various types of underwater torque tool systems,the existing underwater torque tools still need to be imported,the feedback method is single,and cross-level torque output is required recover the phenomenon of replacing the output interface.This article takes Class1-4,which is the most widely used,as the research object,and proposes a "highly adaptable hydraulic torque tool system" scheme in order to improve the above problems.This subject comes from the offshore oil engineering scientific research project "Principle Research and Device Design of Deep Water ROV Control Hydraulic Torque Tool System".In view of the high adaptability of this article,the feedback method of the tool system was studied.Underwater hydraulic torque tools for measurement,one is to use sensors to measure torque and revolutions,and feedback to the host computer for monitoring,and the other is to use pure mechanical devices to measure and read through the ROV's own camera.And on this basis,the overall design of the underwater hydraulic torque tool system is completed.According to the mechanical torque measuring device,its working principle is introduced.Based on the force analysis of the disc spring,a mathematical model of the measuring device's rotation angle and tool output torque is established and its curve is drawn.Using the theory of elastic mechanics,the strain analysis of the special gasket was completed,and the material mechanics knowledge was used to complete the bending moment and deformation analysis of the three support modes of the curved rail in the device,which provides a theoretical basis for subsequent simulation analysis.The static simulation analysis of the key components was carried out,and the mechanical simulation analysis of the curved rail and the special gasket under the three support methods was completed using ANSYS Workbench.The simulation analysis results were basically consistent with the theoretical calculation results,and the curved rail support was completed by calculation The choice of way.The static simulation analysis of the interface slot of the output unit and the shell of the device is completed,and the analysis results content the requirements for use.ADAMS simulation analysis is performed on the angle measurement mechanism in the device.The angle measurement mechanism can work as expected and obtain a torque-angle simulation curve.Finally,the key parts of the tool are tested,including the output unit interface slot,axial locking device and angle measuring device.Conduct a strength test on the interface slot,simulate the working mode of the slot to apply the corresponding level of limit torque,and observe the contact surface of the slot.Destruction experiments were carried out on the axial locking mechanism,the load was continuously increased,and the state of the pin was observed.The experimental results verified the correctness of the simulation and theoretical calculations.Verification test of the angle measuring mechanism,the torque-angle curve is drawn by multiple sets of data in two tests,the curve change trend is consistent with the simulation curve,the application range of the tool system is obtained through the curve change,and the theory is obtained through the test curve and the theoretical curve The correction factor of the formula.