Lightweight Research Of Gate Type Anti-impact Support

In rock burst mines,with the deepening of mining depth,rock burst occurs frequently in roadways,causing tremendous damage to roadways.ZHD4150 portal anti-scour support has achieved remarkable results in resisting rock burst in roadway support.However,due to the large quality of the support itself,there are disadvantages that are not conducive to disassembly and handling during the forward movement of the back frame.In this paper,structural optimization and lightweight analysis of ZHD4150 portal anti-scour bracket are studied.The foundation structure of the portal anti-scour bracket is determined,and the foundation structure is analyzed.By comparing the advantages and disadvantages of different optimization methods,the topology optimization method is selected to optimize the top beam.The basic principle of topology optimization and several commonly used methods in practical engineering are introduced.A mathematical model is established based on the variable density method of topology optimization.The finite element model of the roof beam is established,and the topology module of ANSYS Workbench is used to optimize the roof beam.According to the results of the topology optimization and the design criteria of other supports,the overall design of the roof beam of the support is completed.By checking the strength and stiffness of the optimized top beam,the reliability of the optimized top beam is ensured.The weak links of the base bearing attack are analyzed,and the overall structure of the support base is redesigned by triz's innovation theory.The base is designed as five parts connected by pin shafts.The transfer position of force in the base is changed to make the structure stress more reasonable.Taking the thickness of the main stress component of the optimized base as the design variable,the response surface is generated by using Kriging interpolation method through DOE test optimization design,and the specific thickness of the main stress component is determined.The natural frequencies and mode shapes of the first six modes of the optimized back-door anti-impact support under prestressing conditions are calculated.The response spectrum of the support to horizontal earthquake is analyzed,and the specific mode shapes,maximum deformation and dynamic characteristics of the support under earthquake are studied.The optimized portal anti-scour support has greater support force,smaller quality and is convenient for underground transportation,and meets the requirements of roadway support in rock burst mine.It is of great practical significance to the safe mining of underground coal mine.There are 55 papers,10 tables and 54 references.