1Optimal Design of Heat Pipe Exchanger for Return Air Wasted Heat Reclaim in Coal MineBAO Lingling, LI YananDesign and Research1-52Design and Implementation of Multi-Channel Frequency Signal AcquisitionZHANG HaiqingDesign and Research6-8,113Design and Realization of Mine Explosion-Proof Medium and High Voltage Frequency Converter BPJ-630/1140RAN Gaoyuan, GAO YanfeiDesign and Research12-14,194Research and Design of Ultrasonic Water Meter SCL-61D and ModBus Protocol ConversionLYU Wenbao, LIU LingyunDesign and Research15-195Design of a New Submersible Pump ProtectorZHANG YuguangDesign and Research20-226Design and Application of Integrated Control System of Belt Conveyor in Coal MineZHAO WeiyeDesign and Research23-25,297Technical Improvement Design of MG900/2210-GWD Type Shearer StructureXU JianjunDesign and Research26-298Finite Element Analysis of Full-Frame Hydraulic Support ZY8000/18/39WANG Yajun, MU Xuan, ZENG Jinbao, CAO WenmingDesign and Research30-339Development of Roofbolter CMM4-25WANG WeiDesign and Research34-3610Analysis and Optimization of Idling Thermal Power for Multi Disc Wet BrakeMA FuwenIssue Discussion37-3911Analysis and Application of Centralized Management Mode for Mechanical and Electrical Equipment in Coal MineLIU YangIssue Discussion40-4212Design and Application of Embedded Gateway in Coal Mine Safety Monitoring SystemZHAO YueIssue Discussion43-45,4813Application Prospect of Permanent Magnet Synchronous Motor in Coal MineLI ZhaozhongIssue Discussion46-4814Discussion on Grounding Resistance Selection of Low Voltage and High Resistance Grounding SystemWANG Xiaohua, ZHANG MinyanIssue Discussion49-52,5615Structural Modal Analysis of Explosion-Proof Manned CarWEI JianlongIssue Discussion53-5616Discussion on Key Technology of Continuous Shearer Overhaul in Coal MineZHANG DongbaoIssue Discussion57-59,6317Simulation Analysis for Hydraulic System of ShearerSHENG YonglinIssue Discussion60-6318Study on Surface Modification of High Strength Stamping Parts Manufacturing MoldREN YingguangIssue Discussion64-6719Discussion on Localization of Hydraulic System for Support CarrierLIU YulongIssue Discussion68-7020Analysis of Power Balance in Multi-Power Unit of Scraper ConveyorWANG Shuai, LIU Kai, WANG XiangrongIssue Discussion71-73 