Results 31 to 40 of about 440 (192)

Grain Damage in Low­Speed Collision with the Surfaces of the Hoisting­and­Transport Machines Working Parts

Сельскохозяйственные машины и технологии, 2020
To reduce the damage level of wheat grains during its post-harvest processing, it is proposed to replace steel working parts in lifting and transporting machines with polymer ones.(Research purpose) Experimentally determine the dependence of the degree ...
V. I. Pakhomov, S. V. Braginets, E. V. Benova, O. N. Bakhchevnikov, D. S. Podlesnyy   +4 more
doaj   +1 more source

Reducing the Cost of 3D Metal Printing Using Selective Laser Melting (SLM) Technology in the Manufacture of a Drill Body by Reinforcing Thin-Walled Shell Forms with Metal-Polymers

Journal of Manufacturing and Materials Processing
This article describes the technology for manufacturing a metal composite structure of a metal-cutting tool body. The main problem with using metal 3D-printing is its prohibitively high cost.
Nickolay S. Lubimyi, Mihail Chepchurov, Andrey A. Polshin, Michael D. Gerasimov, Boris S. Chetverikov, Anastasia Chetverikova, Alexander A. Tikhonov, Ardalion Maltsev   +7 more
doaj   +1 more source

Control system for electrohydraulic drive of a mobile sinking hoisting plant

MATEC Web of Conferences, 2018
The article presents the results of the control system development for the electro hydraulic drive of a mobile sinking hoisting plant. Increasing the technical performance of mobile sinking hoisting plants is possible by increasing their productivity ...
Kurochkin Anton, Vagin Vladimir, Karpesh Anton, Dyorina Natalja   +3 more
doaj   +1 more source

Identification of Problems Associated with the Usage of Friction (Koeppe) Hoists Based on Geodetic Measurements

Geosciences, 2020
The hoist assembly based on the Koeppe friction is a commonly used solution in mining. However, it has some disadvantages. A few centimeters offset of the groove axis can lead to excessive abrasion of linings on the Koeppe friction and pulleys.
Agnieszka Ochałek, Wojciech Jaśkowski, Mateusz Jabłoński   +2 more
doaj   +1 more source

Frequency Control System for a Synchronized Asynchronous Electric Drive [PDF]

E3S Web of Conferences, 2020
Considering the problem of energy saving at industrial enterprises, attention should be paid to the fact that about 70 ... 80% of all electric motors are asynchronous, and most of them are installed in unregulated drives.
Meshcheryakov Victor N., Sibirtsev Dmitry S., Gracheva Elena   +2 more
doaj   +1 more source

Methodology for Designing Vibration Devices with Asymmetric Oscillations and a Given Value of the Asymmetry of the Driving Force

Vibration
In mechanical engineering, the building industry, and many other branches of industry, vibration machines are widely used, in which circular and directed oscillations predominate in the form of movement of the working equipment.
Mihail D. Gerasimov, Nickolai S. Lubimyi, Andrey A. Polshin, Boris S. Chetverikov, Anastasia Chetverikova   +4 more
doaj   +1 more source

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

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

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   +1 more source

Mathematical modeling of energy loss reduction in gear boxes of oil and gas technological transport

Проблеми трибології, 2021
The work is aimed at solving the problem of reducing energy losses in transmission units of hoisting machines for repairing wells. Method of rapid heating and maintaining the optimal temperature in the transmission units of lifting units by using the ...
I.M. Mykytiy
doaj   +1 more source