ZZ13000/28/60型液压支架的设计与仿真分析

针对大同矿区6 m厚煤层和"两硬"煤层条件,建立了支架与工作面围岩的力学关系模型,依据12号煤层其他工作面现场经验、矿山压力显现监测和相应的计算公式,确立了支架的工作阻力。为保证支架的支护强度,对支架支撑能力和支撑顶板比压进行了计算。基于三维建模软件Solid Works和分析软件COSMOS建立了液压支架虚拟样机并进行了动态仿真分析,对支架双扭线进行了优化,对切顶力与采高关系和支护强度与采高的关系进行了分析。结果表明:支架的切顶力达到7 222.8~8 235.95 k N时,支架具有良好的切顶效果和支护效果;支架的梁端距在52.077~63.298 cm间变化较好;支护强度达到1.26~1.36 MPa时,支撑效率较高。

Design and Simulation Analysis of ZZ13000/28/60 Type Hydraulic Support

By directed against 6 m thick coal seam in mining area and the"Two-hard" coal seam conditions, the mechanical re-lationship model between the support and the surrounding rock of the working face was established.According to the on-site experience in other working face of No.12 coal seam, coupled with the mining pressure monitoring display and the corresponding calculation for-mula, the working resistance of support was established.In order to ensure the support strength of the support, the support ability of support and than the pressure of supporting roof were calculated.Based on three dimensional ( 3D) modeling software of SolidWorks and analysis software of COSMOS, the virtual prototyping of hydraulic support was established and carried on dynamic simulation analy-sis.The support four connecting rod mechanism's design of double twisting lines was optimized.The relationship between top cutting fore and mining height, and the relationship between support strength and mining height were analyzed.The results show when the top cutting fore reached 7222.78~8235.95 kN, the support has a better roof cutting and supporting effect, the better variation distance of the beam end and support is 52.011~63.298 cm, and it has a higher efficiency when the support strength reached 1.26~1.36 MPa.