The Static Analysis And Optimization Design About Filling Hydraulic Later Top Beam With Six Pillars Supported

Filling hydraulic support is a comprehensive mechanized equipment that melts hydraulic support and filling mechanism to one body. It can not only support the roof weighting to ensure that mining work will go smoothly and the personal safety of staff, but also will filling goaf with the mining waste rock and waste backfill. So this way can effectively solve the question of "three down coal", and preventing the surface collapse about mining, building damage and environmental pollution and so on. This article mainly discusses the detailed study of the later top beam on the hydraulic support with six pillars supporting type filling of ZZC8800/20/38.First of all, the whole structure and main parameters of the hydraulic support with six pillars supporting type filling of ZZC 8800/20/38 are analyzed, and analysis the force condition of the later top beam work under different conditions.Classification of condition is in accordance with its different supporting height with concentrated load, distributed load, partial load, angle of working face and the different way of moving frame. By the analysis that the scraper conveyor hanged at the end of the later top beam of the hydraulic support with six pillars supporting type filling of ZZC8800/20/38 is neglected.Secondly, building the 3D solid model of the filling hydraulic support by Pro-e and simplified model of the later top beams. The model is imported to Ansys through the pro-e seamless docking with Ansys, and obtained the corresponding stress nephogram and displacement nephogram by its static finite element analysis under many working conditions. Then the results would be comparde and analyzed. The maximum of stress on the top beam of filling hydraulic support with six pillars supported moving frame under pressure is more than the material allowable value, so the mode of moving frame is not recommended.In addition, the filling hydraulic support under other conditions can work normally, which has certain spare on strength.Finally, with the quality of later top beam, doing the topology optimization and size optimization to the later top beam under its not to exceed the maximum yield strength of material as the optimize conditions.In addition to, the result of the topology optimization is getting rid of the two pieces of stiffener plate on the front later top beam and the two pieces of steel plate on the plate on the back-end suspension porous hopper scraper conveyor. After optimization, the main ribbed of later top beam decrease 1 mm, the top roof of later top beam decreases 4 mm, main ribbed height 6 mm.According to the optimal value to change the original entity model, it carries on the finite element analysis again to verify the optimization results. After the analysis, the optimized model still meet the conditions of use, and it's weight will reduce 283.45 kg, in other word,the result satisfy the requirement of the lightweight optimization.