Results 21 to 30 of about 7,909 (215)
Design and experimental study of electrical and mechanical brake for mine hoist [PDF]
Mechanics & Industry, 2021 To meet the requirement of the braking response of the coal mine hoist, a new electromechanical braking technology for mine hoists is proposed, the principle of electromechanical braking of mine hoists is demonstrated, and the detailed parameters and braking performance of electromechanical brakes are given.
Huawei Jin +4 more
openaire +2 more sources
IEEE Access, 2021 As a non-contact measurement technology with high data acquisition efficiency, photogrammetry is an ideal choice for collecting the data needed in the safety evaluation of port hoisting machinery.
Enshun Lu +4 more
doaj +1 more source
Controlling stress state of a hoisting shaft frame in the context of specific freezing process [PDF]
, 2018 Purpose is to obtain regularities of a stress state of such multilayer system as neighbourhood rock mass – frozen soil – hoisting shaft frame in the process of numerical analysis to control a frame state with the selection of efficient parameters ...
Alkhdour, A +4 more
core +1 more source
Linear Permanent Magnet Eddy Current Brake for Overwinding Protection
IEEE Access, 2019 Overwinding protection devices are used to brake hoisting containers before these containers reach a limited height, thereby preventing the hoisting containers from impacting the hoisting system.
Panpan Yang +5 more
doaj +1 more source
The impact of vibration mechanism’ installation place on the process of retrieving stuck drill pipe [PDF]
, 2016 Purpose. The present paper studies the dependence of the dynamic oscillatory movements in the area of drill string sticking on the parameters of vibrating mechanism and place of its installation in the heavy weight drill pipe.
Levchuk, K, Moisyshyn, V
core +2 more sources
Study on fault mechanism of shaft hoist steelwork
Procedia Earth and Planetary Science, 2009 AbstractSome achievements have been made in detecting the vibration faults in shaft hoist steelwork, but very little information is currently available to help study the faults mechanism. The faults during the run-ups stage are different from the faults during even speed stage.
Xing-ming, Xiao +2 more
openaire +1 more source
Vibrodiagnostics of hoisting crane mechanisms using simulation modeling
IOP Conference Series: Materials Science and Engineering, 2021 Abstract The subject of the research is an opportunity to increase the efficiency of vibration diagnostics of hoisting cranes through the use of simulation of the vibration signal. In the article the basic approaches developed by the authors to construction of the type diagram of a mechanism and modeling of a vibrating signal of the ...
A Yu Ganshkevich, Ph O Fadeev
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Control of the weakly damped System with the embedded system support [PDF]
, 2018 This paper deals with the experimental verification of the importance of embedded systems with an applied MEMS sensor in controlling weakly damped systems. The aim is to suppress actively residual oscillations.
Kondelová, Anna +2 more
core +2 more sources
Dynamic Modeling of Lift Hoisting Mechanism Block Pulley
Procedia Engineering, 2016 AbstractThe mathematical model of loaded block pulley trolley movement was developed based on Lagrange equation of the second genus. The differential equations of loaded trolley motion were given along with the relations for viscoelastic block pulley characteristics based on empirical observations.
Reutov, A.A. +2 more
openaire +1 more source
Dynamic weighted idle time heuristic for flowshop scheduling [PDF]
, 2015 The constructive heuristic of Nawaz, Enscore and Ham (NEH) has been introduced in 1983 to solve flowshop scheduling. Many researchers have continued to improve the NEH by adding new steps and procedures to the existing algorithm.
Ahmad, Abd Rahman +3 more
core +1 more source