| The security shell of nuclear reactor plant shell is an important barrier to ensure nuclear safety.Generally,it is designed into prestressing reinforced concrete shell structure.As it is difficult to pass through the inverted large U-shaped arrangement of large curvature of the long channel,it cannot meet the construction requirements.In order to meet the needs of the nuclear power station construction,the Giant Intelligent Limited by Share Ltd specially designed and developed the winch system of prestressing beam threading machine.The winch system machine includes hoisting equipment and guiding equipment,in which the winch equipment can mainly provide power for the beam-forming operation and can automatically withdraw rope and release rope,and can adjust the height of the pillar according to the height of the reaction shell.The guiding device mainly controls the direction of the delivery of the prestressing beam,and prevents the prestressing beam from being displaced during beaming.The working environment of the hydraulic winch system of the prestressing beam threading machine is very special,which is usually carried out in the reactor shell of the nuclear power plant.In the design and development process,the design and manufacture of mechanical components is the key to the development of the two devices.In this paper,the CAE technology is used to simulate the static,kinematics and dynamics of the winch equipment and the guide device,and then the two devices would be tested,the main work is as follows:(1)This paper introduces the overall scheme design of two equipments.And then SolidWorks is used to complete the establishment of 3D models of the hoisting equipment and guiding device and Interference check.(2)Importing the 3D models into ADAMS and then carrying on Kinematics simulation of winch equipment to get the displacement,velocity and acceleration of winch equipment’s pillar when it goes up and down,left and right.At the same time,the contact force between the wheel and the base is obtained by the dynamic simulation,the maximum internal stress and synthetic contact stress are calculated by the Hertz formula and a rough estimation of the life of the wheel.(3)Using the finite element software HyperMesh to complete the finite element model of the winch equipment and the guide device.And then import in the ANSYS software.After that,respectively carries on post processing of two limiting conditions for the guide device and four extreme positions for the winch equipment.Then the stress and deformation of the whole machine and its components is obtained.Finally the maximum position of stress and deformation is found.After checking,two sets of equipment meet the requirements of stiffness and strength.(4)Completing the field shakedown and experiment of the winch equipment and guide device.Two sets of equipment carry on operation test and the beam operation,and check the stability of the equipment in the beam project,At the same time,the sealing of hydraulic system,oil piping and its circuit,welding quality,sheet metal,body dimension measurement,electrical control,hydraulic system,inspection of painting color and so on are also checked and measured..Conclusion: According to the design requirements,three-dimensional modeling,kinematics simulation,dynamic simulation,static analysis and the test of the two equipments are carried out,and the results meet the design requirements,this article provides a theoretical basis for the Design of Winch System for Prestressing Beam Threading Machine... |
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