Finite Element Analysis And Hinge Points Location Optimization On Luffing Mechanism Of Dual-Arm Lifting Manipulator

As the society as a whole to coal energy demand is increasing, how to effectively improve the efficiency of coal mining to become an important subject. The mining efficiency depends largely on the installation of fully mechanized working face retreat this work takes time. At present domestic for installation and retracement of fully mechanized working face of the work study is less, install retracement efficiency is still in low level. For underground installation of fully mechanized working face, low efficiency of retreat, the question of labor intensity, introduces a special equipment for installation and retracement of fully mechanized working face, your arms lifting manipulator is one of the important part of the set of equipment, mainly used in the installation process of fully mechanized working face lifting scraper conveyor in central trough, motor, reducer, the nose as well as the working face end support equipment such as auxiliary. The equipment replaced manual operation, not only more effective to ensure the safety of the personnel, and greatly save the installation retracement of fully mechanized working face of time.This paper takes a type arms lifting manipulator as the research object, on the force analysis on the structure, the finite element analysis and optimization design. First of all, according to the entity structure using Pro/E for 3 d entity modeling arms lifting manipulator. And use the large finite element analysis software ANSYS Workbench to arms crane telescopic arm manipulator for finite element analysis. By statics analysis verify the structural stiffness and strength, on the basis of the modal analysis of telescopic boom structure and buckling analysis. Through the modal analysis find the structure natural frequency and vibration mode, through buckling analysis to verify the stability of the structure. Using the MATLAB optimization toolbox to optimize a hinge point location, the minimum amplitude of hydraulic cylinder force as target function, establish the corresponding mathematical model and determine the design variables and constraints, the optimization results to redistribute hinge point location, range of hydraulic cylinder force decrease obviously, according to the conclusions of range of hydraulic cylinder design and calculation, the results show that the optimized the improvement of the hinge point force makes the range of hydraulic cylinder diameter reduced by standard 180 mm to 160 mm, hydraulic cylinder luffing reduced a model, effectively reduce the manufacturing cost. According to the result of optimization of luffing mechanism modeling and finite element analysis, the results show that the optimized mechanism not only meeting the requirement, and institutions of the maximum equivalent stress and deformation are reduced. The optimized structure not only reduces the manufacturing cost, but also improves the mechanical properties of the luffing mechanism.