Structure Design And Optimize Of The Rocker Arm Type Iron Roughneck

As technology advances, the development of industrial technology, drilling technology is also developing towards automation and intelligent direction. Most oil and gas field has entered the stage in the late development, mining depth continues to increase, the traditional oil drilling equipment exploration drilling has been unable to meet current requirements. For oil drilling, workover process using conventional hydraulic power tongs on the drill pipe shackle, low efficiency, the operation is complicated and there are security risks and other issues, proposed iron roughneck rocker design ideas. Compared with traditional hydraulic power tong, iron roughneck rocker only has the basic functions of the hydraulic tong, still working with reliability, service life and operating efficiency indicators, both have significantly improved. The main content of this paper is to develop an automated, high-efficiency iron roughneck rocker, and the formation of engineering capability, breaking iron roughneck rocker key technology by the monopoly of multinational companies to provide high well for our oil and gas operations shackle operation technology and tools torque. This topic design of swing arm iron roughneck is in reference on the basis of the predecessors’ improvement and innovative design. Design and research mainly through the following ways:1.Check the oil pipe at home and abroad with the shackle device development, research status iron roughneck and other related documents, a comprehensive analysis of the operating characteristics of the iron roughneck past, combined with the needs of the current offshore drilling platform drilling operations presented an automated high efficiency rocker iron roughneck overall structure of the program. The rocker iron roughneck to improve construction safety, shorten drilling cycle, reduce the intensity and reduce damage to the drill. Designed with the iron roughneck offshore operations in the applicability of reduced iron roughneck volume, proposed that iron roughneck rocker can be used in offshore oil drilling.2.According to literature research and comprehensive analysis, and design of the structure and working principle rocker iron roughneck, preferably iron roughneck lift stretcher, spinner tongs, notching pliers structure of the program. The iron roughneck rocker by the telescopic arm, column, spinner tongs, notching pliers, hydraulic systems, the base and the like. Column cabinet rose to iron roughneck work working height telescopic arm extended to designated locations; tube having been raised to the detection area, red clamp buckle twist to the operating position; operator confirms pipe couplings located with pliers clamped position; Chong clamp clamp buckle under tight clamp tight clamp on the red button, spinner clamp on a rotary shackle; and finally the operator confirms buckle complete with pipe coupling position.3.For the iron roughneck work environment, job demands, presented the main technical parameters of iron roughneck rocker, and the spinner tongs, notching pliers, telescopic arm, lifting stretcher, base related design analysis.4.The use of SolidWorks software designed rocker iron roughneck telescopic two-dimensional structure diagram transformed into three-dimensional model, and then imported into Ansys finite element analysis (FEA) software for kinematics simulation, create various bars and even a whole lever mechanism relative spatial position, the relationship between posture, verify the reasonableness of the iron roughneck rocker telescopic arm structure design parameters.5.Draw iron roughneck rocker base, telescopic arm, connecting block parts of three-dimensional model, finite element analysis software to import the mesh, add materials, setting analysis conditions, the resulting finite element analysis model, be limited element strength analysis and calculation, a reference to the role of selected parts of the work material.6.The iron roughneck rocker clamp using interchangeable design, can switch to a different type of structure of the clamping jaw for different tool types and different operating environments. While optimizing iron roughneck rocker clamping jaw structure, select an appropriate set of structural parameters jaw tooth surface distribution types to meet the increasing friction clamping does not destroy the drill.Through the above research and design, we obtained the following conclusions:1.The iron roughneck rocker functional requirements, work environment, determining the rocker iron roughneck main technical parameters. Using hydraulic cylinders extend and retract movements to achieve the rise and fall of the clamp body, columns connected by pin and the base together; use hydraulic cylinder is mounted in the middle of the lever, two parallel clamping arm spinner clamp clamped structural design; notching pliers choose three cylinder direct-drive three-point clamping, four cylinder two-way reverse mode. The iron roughneck rocker simple structure, reliability of work, to meet the design requirements.2.According to the organization as a whole rocker iron roughneck, technical characteristics, complete spinner clamp hydraulic system, punching tong, design theory telescopic arm, lifting stretcher, chassis and other major components of the organization.3.The establishment of a three-dimensional model of a rocker arm iron roughneck, with the help of ADAMS to carry iron roughneck rocker arm kinematic analysis, access to hydraulic cylinders and related nodes X, Y-axis displacement, velocity and acceleration versus time image proved iron roughneck rocker arm design operability.4.The establishment of iron roughneck key part FEM model base, arm, connection blocks, etc., import ANSYS Workbench intensity analysis. According to the actual working conditions of the base, the base surface to apply a certain load, the base obtained maximum stress value is 262.14MPa, below the material yield limit; to force arm the most dangerous conditions were simulated, finite element analysis, we can more clearly understand the design of the main arm by the force of the force point, as well as stress distribution; vulnerable parts of the arm connected to the block strength check, stress mainly connecting block pin hole, but below the yield strength limit of the material.5.The establishment of iron roughneck rocker clamp holding the basic mechanical model tooth surface stress analysis, were distributed from the surface of the tooth forceps, dental bite into the depth of its type for the corresponding optimal design, deep teeth marks obtained as a function of angle clamp-type teeth, tooth height and tooth spacing parameters. Considering the increasing friction drill pipe and the jaw, teeth and bite-type drill depth 2 aspects, drawn iron roughneck rocker clamp tooth surface using diamond distribution structure, tooth profile using tooth Angle alpha is 110 degrees, tooth height h to 2 mm, teeth spacing p for structure parameters of 4 mm.