Results 131 to 140 of about 5,025 (158)

Fault Diagnosis of Mine Hoist Braking System Based on Wavelet Packet and Support Vector Machine

2006 IEEE International Conference on Systems, Man and Cybernetics, 2006
This paper concerns mine hoist braking system fault diagnosis with the combination of wavelet packet and support vector machine. It is motivated by the scarce of fault samples in mine hoist such requiring very high security system. A novel approach is presented in order to diagnose blockage piston in cylinder, a typical fault of mine hoist braking ...
Guo Xiao-hui, Ma Xiao-ping, Xu Zhao
openaire   +1 more source

Research on load monitoring technology of mine hoist based on machine vision

Measurement Science and Technology
Abstract A hoist load monitoring method based on machine vision technology is proposed in this paper to address the frequent overloading accidents of mine hoists and the low safety and reliability of existing contact load monitoring technologies. The depth image of the skip undergoes time domain and spatial bilateral filtering algorithms
Zuzhi Tian, Zezheng Wang, Yangyang Guo, Huijun Chen, Minjian Zhu   +4 more
openaire   +1 more source

Optimization of contact stresses in shoe brakes of mine hoisting machines

Collection of Research Papers of the National Mining University
Purpose. The research aims to develop recommendations for reducing the maximum contact stresses between the brake lining and the mine hoisting machine drum. Methods. Existing methodologies for calculating shoe brakes of mine hoisting machines often use a hypothesis that assumes absolute stiffness of the brake rim and beam.
K Zabolotnyi, A Burkov, O Panchenko, O Zhupiiev, V Symonenko   +4 more
openaire   +1 more source

The use of multi-pulse systems in the power supply of hoisting machine drives to improve voltage parameters in mining plants

2020 12th International Conference and Exhibition on Electrical Power Quality and Utilisation- (EPQU), 2020
Hoisting machines are among the largest loads in mining power networks. Due to frequent start-ups and stoppages, there are the source of numerous disturbances in the power network of a mining plant, such as: higher harmonics or voltage fluctuations.
Tomasz Siostrzonek, Krzysztof Chmielowiec, Krzysztof Piatek, Mateusz Dutka, Andrzej Firlit   +4 more
openaire   +1 more source

Intelligent monitoring and full-digital automatic control of DC machine drive control system for mine hoist

Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555), 2002
The mine hoist is the key piece of equipment of the mine production process. A control system with good performance of the hoist is an important factor of assuring mine production capability and security. In this paper, according to the operation technology of a mine hoist, a practical full-digital automation control system and intelligent monitoring ...
null Jiang Jianguo, null Zhao Yulin, null Shao Zhongming, null Yang Fengzhong, null Ma Jianmin   +4 more
openaire   +1 more source

A machine vision-based wear detection method for guide pair of the mine hoisting system

Review of Scientific Instruments
The wear detection of the guide pair (GP) plays a key role in the safe operation of the mine hoist system. Due to the actual working conditions of the well, manual detection is still the main detection method for GP wear, which has the problems of time consumption, low detection accuracy, and being unable to realize real-time detection. In view of this
Qiang Li, Xin Ding, Gongbo Zhou, Lianfeng Han, Dongrun Liu, Ping Zhou, Zhenzhi He   +6 more
openaire   +2 more sources

Analysis of Oil Film Temperature Distribution of the High Speed Shaft Journal Bearings of Gear Box Applied in the Coal Mine Hoisting Machine

World Tribology Congress III, Volume 2, 2005
The paper describes the analysis of oil film temperature distributions that are generated in the gear train journal bearings of high speed shaft. The oil film temperature distributions were obtained on the assumption of adiabatic, laminar oil film for the finite bearing length, parallel axis of journal and bush and radial load of bearings.
S. Strzelecki, J. Spalek
openaire   +1 more source

Evolution and modeling of mine water inflow and hazard characteristics in southern coalfields of China: A case of Meitanba mine

International Journal of Mining Science and Technology, 2022
Lianyang Y Zhang
exaly  

Can we use mine waste as substrate in constructed wetlands to intensify nutrient removal? A critical assessment of key removal mechanisms and long-term environmental risks

Water Research, 2022
Zizhang Guo, Zhen Hu, Jian Zhang
exaly  

An assessment of mine methane mitigation and utilisation technologies

Progress in Energy and Combustion Science, 2005
Shi Su, Andrew Beath
exaly