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Hydraulic powered support, which plays an important role in coal mining equipment, works with coal excavator to achieve a consolidated coal mining mechanization. China’s coal reserves are rich in thick coal seam, primarily exploited with hydraulic supports of large mining height, great resistance and high reliability, mainly with two-pillar shield hydraulic powered support. Two-pillar shield hydraulic powered support is of simple and reliable structure, and of good stability.First, according to the various structure parameters of hydraulic powered support,“SolidWorks”has been used to design the structure of components of hydraulic powered support ZY9400/28/62, establish the geometric assembly model, and interference checking of the whole equipment is done to avoid collision between various components of the model. The‘Motion’add-in is used to simulate the motion of the whole equipment to verify the rationality of design and assembling.Secondly, the hydraulic powered support ZY9400/28/62 is simplified to the plane linkage model, three different support operation position: high, medium, low position is analyzed by ANSYS. The simulation results show that the stability of the support is good, the dangerousness is greatest when support operation position is in low position. When support operation position is in low position, the design of structure is optimized, and the weight is decrease 4.1%.Finally, shield-beam finite element model is created in ANSYS, the optimization mesh is obtained by only there times meshing. The thickness of the hinge pin is increased to eliminate the the maximum local stress in shield-beam,The numerical results show little effect. The enlargement of the thickness of rib plate can not make the stiffness of shield-beam increase evidently. When the model is chamfered, the computed results show that chamfering design of shield-beam make for the force of structure.
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