Results 11 to 20 of about 5,034 (157)

Development of a model of contact shoe brake-drum interaction in the context of a mine hoisting machine [PDF]

Mining of Mineral Deposits, 2017
The studies have been carried out within the framework of thesis for a Degree of Candidate of Technical Sciences without any financial support.
Zabolotnyi, K, Zhupiiev, O, Molodchenko, A   +2 more
openaire   +7 more sources

Development of a Mathematical Model of Operation Reliability of Mine Hoisting Plants

Mathematics
The work analyzes the performance assurance of mine hoisting machines, including the problem of the quality of performance of the functions. The quality of functioning allows evaluation of a set of properties of the process of lifting loads, designed to ...
Pavel V. Shishkin, Boris V. Malozyomov, Nikita V. Martyushev, Svetlana N. Sorokova, Egor A. Efremenkov, Denis V. Valuev, Mengxu Qi   +6 more
doaj   +3 more sources

The Technical and Economic Aspects of Using DC or AC Motors in the Drive of Hoisting Machines

Energies
A hoisting machine is one of the main components of an underground mine process line. The drive systems currently used in these machines are based on direct current, synchronous, or induction (AC) motors. Power electronic converters are used to power and
Tomasz Siostrzonek, Jacek Pytel, Tomasz Karpiel   +2 more
doaj   +3 more sources

Strengthening elements of steel structures for controlling fatigue fracture [PDF]

Metalurgija, 2021
The article deals with the issues of reliable operation of steel structures of mine hoisting machines. It is proposed to strengthen the “weak points” of the braking device beam structure, which will further prevent the formation and growth of cracks in ...
P. A. Kropachev, A. D. Mekhtiyev, Y. Zh. Sarsikeyev   +2 more
doaj   +1 more source

Advanced Static Var Generator in the Reactive Power Automatic Compensation System of an Underground Mine with a Thyristor Hoisting Machine

Energies
In industrial plants with dynamically varying load profiles, the problem of increased charges for over-contracted reactive power consumption is very common. To eliminate these charges, reactive power compensation systems are used. This article presents a case study of an automatic reactive power compensation system in an underground mine where a ...
Marian Hyla, Andrzej Latko
openaire   +4 more sources

A Fault Diagnosis Method of Mine Hoist Disc Brake System Based on Machine Learning [PDF]

Applied Sciences, 2020
The performance of the brake system is directly related to the safety and reliability of the mine hoist operation. Mining the useful fault information in the operation of a mine hoist brake system, analyzing the abnormal parts and causes of the equipment, and making accurate early prediction and diagnosis of hidden faults are of great significance to ...
Juanli Li, Shuo Jiang, Menghui Li, Jiacheng Xie   +3 more
openaire   +2 more sources

Modeling of induction motor drive of a mine hoist on the basis of a doubly-fed electric machine [PDF]

E3S Web of Conferences, 2021
One of the options for the modernization of existing hoist electric drives with a wound-rotor induction motor is its starting according to the scheme of a doubly-fed machine. For this purpose, a frequency converter with an adjustable amplitude, frequency and phase shift of the voltage at its output is connected to the motor rotor. At the same time, the
Ostrovlyanchik Viktor, Popolzin Ivan, Kubarev Vasiliy, Qi Dabin   +3 more
openaire   +2 more sources

Machine vision–based measurement approach for transverse vibrations of moving hoisting vertical ropes in mine hoists using edge location [PDF]

Measurement and Control, 2019
Hoisting vertical rope is a continuum of one-dimensional movement during operation of hoist, and there are no appropriate ways to measure its vibration displacement at present. In this paper, a non-contact and unmarked machine vision measurement method is proposed for measuring the transverse vibration displacement of hoisting vertical ropes.
Ganggang Wu, Xingming Xiao, Jiannan Yao, Chunyang Song   +3 more
openaire   +2 more sources

Method for calculating a two-drum mine winder

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2020
In the Republic of Belarus, on the base of JSC “Soligorsk Institute for Resources Saving Problems with Pilot Production”, the development and launch of import-substituting mass production of large-capacity double-drum mine winders with an increased ...
V. Ya. Prushak, A. P. Dvornik
doaj   +1 more source

Substantiating the methods for calculating the split cylindrical drums of mine hoisting machines with increased rope capacity

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 2022
Purpose. A simplified calculation method development for strengthened split cylindrical drum structures of the mine hoisting machines of the TsR-6.756.2/1.95 type. Methodology. The drum structure for the mine hoisting machines is conventionally divided into several nodes.
K. S Zabolotnyi, O. L Zhupiiev, V. V Symonenko   +2 more
openaire   +1 more source