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Laboratory testing of a shuttle car canopy air curtain for respirable coal mine dust control

International Journal of Coal Science & Technology 2018年第3期5卷 305-314页

作者： W. R. Reed Y. Zheng M. Yekich G. Ross A. Salem Pittsburgh Mining Research Division Centers for Disease Control and Prevention National Institute for Occupational Safety and Health 626 Cochrans Mill Rd. PittsburghPA 15236 USA J.H. Fletcher Inc. Huntington WV USA Marshall University Huntington WV USA

Canopy air curtain （CAC） technology has been developed by the National Institute for Occupational Safety and Health （NIOSH） for use on continuous miners and subsequently roof bolting machines in underground coal mines to protect operators of these machines from overexposure to respirable coal mine dust. The next logical progression is to develop a CAC for shuttle cars to protect operators from the same overexposures. NIOSH awarded a contract to Marshall University and J.H. Fletcher to develop the shuttle car CAC. NIOSH conducted laboratory testing to determine the dust control efficiency of the shuttle car CAC. Testing was conducted on two different cab configurations： a center drive similar to that on a Joy 10SC32AA cab model and an end drive similar to that on a Joy 10SC32AB cab model. Three different ventilation velocities were tested-0.61, 2.0, 4.3 rrds （120, 400, and 850 fpm）. The lowest, 0.61 m/s （120 fpm）, represented the ventilation velocity encountered during loading by the continuous miner, while the 4.3 m/s （850 fpm） velocity represented ventilation velocity airflow over the shuttle car while tramming against ventilation airflow. Test results showed an average of the dust control efficiencies ranging from 74 to 83% for 0.61 m/s （120 fpm）, 39%-43% for 2.0 m/s （400 fpm）, and 6%-16% for 4.3 m/s （850 fpm）. Incorporating an airflow spoiler to the shuttle car CAC design and placing the CAC so that it is located 22.86 cm （9 in.） forward of the operator improved the dust control efficiency to 51%-55% for 4.3 m/s （850 fpm） with minimal impact on dust control efficiencies for lower ventilation velocities. These laboratory tests demonstrate that the newly developed shuttle car CAC has the potential to successfully protect shuttle car operators from coal mine respirable dust overexposures.

关键词： shuttle car Canopy air curtain Dust Airflow Coal mining

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Fault Analysis and Structure Optimization of Traveling Transmission System of shuttle car

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International Journal of Plant Engineering and Management 2023年第1期28卷 1-11页

作者： WANG Liang China Coal Science and Industry Group Chinese Institute of Coal ScienceBeijing 100013China

This paper firstly introduces the common faults of traveling transmission system of shuttle ***,by analyzing the characteristics of shuttle car structure,the layout of traveling transmission system and the common faults on shuttle car,this paper concludes that"internal holding torque"is the main cause of ***,this paper proposes a corresponding optimization design scheme to reduce the impact of"internal torque",and calculates the relevant results through the finite element simulation analysis *** these analyses and calculations,it is shown that the method can effectively reduce the probability of failure of traveling transmission system of shuttle car.

关键词： shuttle car traveling transmission system fault analysis structure optimization

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