Results 21 to 30 of about 5,034 (157)

Modernization of Control Systems of Electric Drives of Mine Lifting Machines

E3S Web of Conferences, 2018
The article shows the peculiarity of the system of technological automation of the newest Simatic S7-1500 PLCs, for electric drives of hoisting transport machines, the analysis of control systems for electric drives of operating mine hoisting machines of
Eshmurodov Ziyodullo, Holboiv Folib
doaj   +1 more source

Patterns of stress-strain state of head rubber-cable rope considering influence of disturbed shaft geometry [PDF]

, 2019
Встановлено аналітичні залежності для визначення напружено-деформованого стану плоского головного гумотросового каната шахтної підйомної машини з урахуванням відхилень геометричних параметрів армування стовбуру від проектних значень.
Білоус, О. І., Колосов, Д. Л., Онищенко, С. В., Танцура, Г. І.   +3 more
core   +1 more source

Critical parameters for coarse coal underground slurry haulage systems [PDF]

, 1981
Factors are identified which must be considered in meeting the requirements of a transportation system for conveying, in a pipeline, the coal mined by a continuous mining machine to a storage location neat the mine entrance or to a coal preparation plant
Maynard, D. P.
core   +2 more sources

Improving the method of controlling the stress-strain state of steel structures of electromechanical systems

Metalurgija, 2023
The article presents the results of improving the method of controlling the stress-strain state of steel structures of mine hoisting machines, which can be attributed to electromechanical systems.
A. B. Zhantlessova, S. K. Zhumazhanov, T. B. Akimzhanov, Y. Zh. Sarsikeyev, B. B. Issabekova, Zh. B. Issabekov, A. D. Mekhtiyev, A. D. Alkina   +7 more
doaj  

The clashing of in situ and pre‐cast technologies—Western trends and local traditions in concrete engineering shaping shell construction in 20th‐century Hungary

Structural Concrete, EarlyView.
Abstract After a blossoming pre‐World War II (WWII) period, the concrete construction industry in then‐socialist Hungary existed in a relative isolation from the Western World during the mid‐20th century. In this paper, we focus on the body of work of one of the then newly established state‐owned design offices, IPARTERV, to show how the isolation ...
Orsolya Gáspár, Péter Haba
wiley   +1 more source

Using optical fibers (OF) to control the stress-strain state of steel structures subject to fatigue failure

Metalurgija, 2022
The article presents the results related to developing and practical testing the method of monitoring the stress strain state of steel structures of mine hoisting machines.
V. V. Yugay, A. D. Mekhtiyev, G. S. Ozhigin, R. Zh. Aimagambetova, Y. G. Neshina, Y. Zh. Sarsikeyev   +5 more
doaj  

Taking Different Roads to Rome: Protective and Proactive Orientations Towards Institutional Power Resources

British Journal of Industrial Relations, EarlyView.
ABSTRACT Works councils in Germany possess substantial institutional resources to protect workers' interests. Yet little is known about how these resources are mobilised in practice and why similar outcomes may emerge through different pathways. Drawing on two German firms acquired by Chinese state‐owned enterprises, this study examines how works ...
Tina Miedtank, Johann Fortwengel
wiley   +1 more source

The specifics of non‐routine task changes: A granular approach

Contemporary Economic Policy, EarlyView.
Abstract This paper estimates granular specific non‐routine tasks and examines employment reallocation across those tasks in the United States. Employment shifts into decision‐making, technology, and information‐related tasks account for 90% of high‐wage employment growth.
Carol A. Scotese
wiley   +1 more source

Use of computer simulation to establish parameters of steel structure strengthening elements

Metalurgija, 2022
The article presents the results of computer simulation related to establishing the parameters of mine hoisting machine steel structure strengthening elements. The simulation was performed using the ANSYS computer program.
A. D. Mekhtiyev, R. Zh. Aimagambetova, P. A. Kropachev, A. A. Kalinin, S. Zh. Aizhambayeva, Y. Zh. Sarsikeyev   +5 more
doaj  

Assessment of energy efficiency improvement strategies for ventilation and hoisting systems during the reconstruction of the Molibden mine

Горные науки и технологии
The economic efficiency of high-performance mining enterprises largely depends on the parameters and operating modes of energy-intensive equipment.
Roman V. Klyuev
doaj   +1 more source