Support arm system

“Working Resistance” Model Selection · Based on the histogram data and in combination with the actual local operation -experiences, the scientific model selection utilized the “transmission rock beam” · mechanics theory of the academician Song Zhenqi and reasonably determined the working resistance of supports to guarantee the appropriate working resistance and prevent adverse events such as waste of investment and occurrence of roof accidents or damage of mass supports. “Anti-corrosion and Anti-contamination” Model Selection · The water of working face was collected for water quality analysis. Based on the water quality report, the anti-corrosion and anti-contamination model selection was fulfilled to · determine the plating anti-corrosion technology of hydraulic cylinder, ensure that the “anti-corrosion and anti-contamination” performance of supports meets the requirements, and reduce the failure rate and operation and maintenance costs of hydraulic system parts. Targeted Design Optimization · Based on the working conditions (approximately horizontal face, large inclination, · face-up/face-down mining, fault structure, tight roof, three-soft problem, and · highly corrosive working face) of the working face, the targeted design was fulfilled to guarantee the excellent working condition adaptability of the supports. · The mechanical structure of the machine was optimized by finite element analysis · to eliminate common design defects (concentrated stress, insufficient rigidity, and · unreasonable partial structure) and guarantee no-defect structure design.