Colliery Mechanical & Electrical Technology Articles

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1The Practical Wiring Method of Three-phase Electric Power Measurement for Underground Coal Mines1-4

2The Comparative Analysis of Two Pressure Reducing Governor Valves4-6

3Statistical Analysis and Maintenance Countermeasures of Equipment Failure7-8

4The Application of Controllable Soft Starters with Differential Frequency Conversion and Infinite Speed Variation for Large Belt Conveyors9-11

5The Analysis of Surging Phenomenon for GAF Ventilator and Its Selection for Type12-14

6The Lubricating Environment Problems during the Running of Speed Reducer for Mine14-16

7Transporting Accidents in Underground Coal Mines and Countermeasures16-18

8A Study of Protective Functions for Small Intelligent Flameproof Vacuum Gate-end Box for Mine18-21

9A Study on Sliding Advance of the Support System of Powered Roof Support21-23

10An Oil Source Controlling Device through Main Loop for Decompression23-24

11A Study of Vacuum Over-voltage Suppression for High-voltage Motor25-27

12A Disposal of Local Turn-to-turn Short Circuit Breakdown of Generator Stator Winding28-30

13A Method of Improving the Strength of Steel Belt Splice30-32

14A Try to Swerve the Belt Conveyor in a Horizontal Running32-33

15Energy Conservation Analysis for Main Ventilator in Pang Zhuang Coal Mine34-35

16Improvement of Debugging Methods for Control Valves of DYF-d/D Sliding Advance of the Supports35-37

17A Disposal of 35kV Line-to-ground Fault37-38