Dynamics of Non-Uniformity Loads of Afc Drives

Dolipski, M.; Remiorz, Eryk; Sobota, P.

doi:10.2478/amsc-2014-0011

Cited by 14 publications

(10 citation statements)

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“…This method cannot reflect the real dynamic properties of the chain drive system. Dolipski et al [12,13] created a physical and mathematical model that helped determine the dynamic loads of a chain drive system. The results of the computer simulations were useful.…”

Section: State Of the Artmentioning

confidence: 99%

Contact Analysis of Chain Drive in Scraper Conveyor Based on Dynamic Meshing Properties

Jiang¹,

Zeng²,

Wang³

et al. 2018

Int. j. simul. model.

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The chain drive system is the most important subsystem in a mining scraper conveyor. Compared with the general chain drive system, that in a scraper conveyor is highly coupled. The rings on a chain come in contact not only with the sprocket wheels but also with the central chutes and scrapers. In order to improve the reliability of the scraper conveyor, a contact analysis of the chain drive system based on its meshing properties was performed. Vogit model-based translational and rotating models of the chain drive system were first introduced. A finite element model of the chain drive system was then established. Contact simulations were conducted using the software LS-DYNA. Von Mises stress and contact pressure curves on various dangerous areas of the horizontal ring, vertical ring, and sprocket wheel were obtained. The von Mises stress and the contact pressure of the rings and the sprocket wheel were compared, and their differences were analysed. Results indicate that the maximum contact pressure for the horizontal and vertical rings is considerably larger than the maximum von Mises stress. The maximum contact pressure for the horizontal ring exceeds 2000 MPa, which is 90 % larger than the von Mises stress (1100 MPa). Meanwhile, the contact pressure for the sprocket wheel is considerably less than the von Mises stress. Therefore, the failure mode of the rings and the sprocket wheels differs. Contact analysis based on meshing properties is useful in describing the dynamic properties of the chain drive system in detail. This study provides guidance for overcoming chain break and jam problems in scraper conveyors.

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Section: State Of the Artmentioning

confidence: 99%

Contact Analysis of Chain Drive in Scraper Conveyor Based on Dynamic Meshing Properties

Jiang¹,

Zeng²,

Wang³

et al. 2018

Int. j. simul. model.

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“…The simulation results are in good agreement with the experimental results. Dolipsk M [4] established the dynamic model of scraper conveyor under non-uniform load and obtained the slip rate of motor in this state.…”

Section: Introductionmentioning

confidence: 99%

Analysis of chain mechanical characteristics of mine scraper conveyor under material loading and chain clamping conditions

Xie

Liu

Xie

et al. 2022

Preprint

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Taking into account the safety factor of the conventional calculation of chain is in accordance with the two chain to bear external load is calculated, and the actual situation of the two chains of load is not uniform, this paper uses nonlinear dynamic finite element software ABAQUS, the simulation system of scraper chain under bias load, torsional vibration in the process of chain distribution should be produced stress and strain. A torsional vibration model of Kelvin-Voigt scraper chain and system based on the analysis of the vibration characteristics of material loading and clamping the chain scraper chain under torsion. Twist vibration from two adjacent scraper chain as a finite element analysis model of the boundary conditions, the finite element analysis of the stress and strain of the chain, we obtain two kinds of different conditions in the chain link stress strain response and the maximum stress and strain distribution, provide the basis for follow-up in the chain of life prediction, safety factor calculation.

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“…The change of tension is an important cause of dynamic load, chain clamping, and chain breaking faults. Dolipski [6][7][8] recorded in detail the uneven distribution of load on a single drive motor during the actual operation of the scraper conveyor. They also introduced the load distribution coefficient to represent the uneven distribution of load.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics of the Chain Drive System of Scraper Conveyor Based on the Speed Difference

Jiang

Wan

et al. 2020

IEEE Access

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The scraper conveyor is the unique transport equipment in coal mining face. Its chain drive system is the core subsystem. The dynamic characteristics of the chain drive system need monitoring for a safe mining. Existing monitoring methods include controlling the chain tension, chain speed and motor current. However, the above-mentioned methods have many disadvantages, such as difficult and costly to implement in mining face, due to the poor working environment and the limitations of the scraper conveyor's structure. This study proposes a monitoring method for the dynamic characteristics of the scraper conveyor on the basis of the speed difference between the head and the tail sprockets. Such an initiative is carried out to study the dynamic characteristics of the scraper conveyor under real working conditions and describe its running state. The speed difference of the head and tail sprockets under different chain speeds, terrains, and loads is monitored and studied. Research results show that the average and maximum speed differences are 0.797% and 0.990%, respectively. Due to the complex terrain, the tighter the scraper chain gets, the smaller the difference of the rotational speed is, compared with the flat working condition. The speed difference under load greatly increases compared with no load. Research results provide data support for the research of the chain drive system dynamics of the scraper conveyor. These results will also provide a new idea for the monitoring of the operating state of the scraper conveyor.

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Dynamics of Non-Uniformity Loads of Afc Drives

Cited by 14 publications

References 0 publications

Contact Analysis of Chain Drive in Scraper Conveyor Based on Dynamic Meshing Properties

Contact Analysis of Chain Drive in Scraper Conveyor Based on Dynamic Meshing Properties

Analysis of chain mechanical characteristics of mine scraper conveyor under material loading and chain clamping conditions

Dynamic Characteristics of the Chain Drive System of Scraper Conveyor Based on the Speed Difference

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