Results 161 to 170 of about 440 (192)

Modeling drive wheels of hoisting machines with rubber cables

Mining informational and analytical bulletin, 2020
Upgrading of hoisting machines aims to improve their performance, to reduce risk of accidents, and to cut down operational and capital costs. One of the redesign solutions is replacement of steel cables by rubber cables. This novation can extend life of pulling members, decrease diameters of drive and guide wheels and, consequently, elements of the ...
V. E. Perekutnev, V. V. Zotov
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Research on temperature rise of hoisting machine disk brake

Journal of Coal Science and Engineering (China), 2012
A mathematical model and finite element model for analysis of temperature rise of the hoisting machine brake system was constructed, limit conditions were defined, and the law of temperature rise of brake shoes during emergent brake course was analyzed and calculated by using finite element software.
Jun Ma, Hai-bo Jang
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Residual life assessment for the metallic structures of hoisting machines

Strength of Materials, 2012
The potentials of the three parameters: Brinell hardness, coefficient of variation of the material hardness, and oercitivity, to be used as the residual life indicators for metallic crane structures were examined. It was shown that the coefficient of variation and coercitivity may be employed in the expert evaluation of metallic structures of hoisting ...
M. A. Starikov, Yu. A. Nikiforov
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Design of Rust Inspection Robot for Hydraulic Hoist Based on Machine Vision

2021 3rd International Symposium on Robotics & Intelligent Manufacturing Technology (ISRIMT), 2021
In order to realize automatic detection of corrosion on the piston rod of hydraulic hoist of hydropower station, it is important to find the location of corrosion and prevent oil leakage of hydraulic hoist and the blocking of control valve or other adverse consequences.
Peng Zhao, Kai He
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Design of Tonnage Variable High and Steering Hoisting Girder Machine

International Conference on Transportation Engineering 2009, 2009
In order to fit the railway passenger traffic line construction, satisfied the demand for large — tonnage hoisting-moving beam equipment on prefabricated and storage field, comprehensive analysis merits and faults about existing equipment, according to the practical situation of prefabricated and storage field, development the 450 t hoisting girder ...
Shitong Chen, Yaohui Zhang, Zhixing Sun
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Study of Safety Monitoring System for Mine Hoisting Machine Brake Shoe

2010 International Conference on E-Product E-Service and E-Entertainment, 2010
This paper presents the construction scheme of brake shoe clearance security real-time monitoring system, the system take mine hoist brake shoe clearance for the monitoring object, with the support of microcontroller AT89C52 and VB6.0, combining the techniques of SQL Server， Man-machine interface design and other technical, it fulfills the signal ...
Hongbing Qiao, Bin Gong, Xiuping Cai, Haitao Zhang   +3 more
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Sliding Ropes Brake Device of Friction Hoist Machine Design and Application

Advanced Materials Research, 2012
In the sight of friction hoist machine transmission characteristics, analysis of the possibility of friction hoist machine sliding ropes phenomenon, sliding ropes phenomenon can be divided into safety slide and dangerous slide two states. In order to avoid the occurrence of the friction hoist machine container overwind, overfall major accident caused ...
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Measure and Suppression of Harmonic Currents for Heavy-duty Hoisting Machines

2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific, 2005
The heavy-duty hoisting machines powered by thyristor-controlled converter become the dominating harmonic source in coal mine power supply system. The high-order harmonics will interfere on the triggering angle of control circuit in AC-DC drive system and cause the stall fault of hoisting machines.
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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
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