Condition and behaviour diagnostics of drive groups on belt conveyors

Maneski, Taško; Jovančić, Predrag; Ignjatović, Dragan; Milošević-Mitić, Vesna; Maneski, Miloš

doi:10.1016/j.engfailanal.2012.01.001

Cited by 11 publications

(6 citation statements)

References 9 publications

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“…Therefore, for further analysis of thin-walled thermally loaded structures, the simplest way is to use a 2D finite element for a thin plate, which has the possibility of assigning temperature in the mid-plane as well as tempe-rature gradient normal to the plate mid-plane. Such finite element was programmed within the KOMIPS package [11], and its verification is presented by applying analytical calculations.…”

Section: Introductionmentioning

confidence: 99%

The influence of temperature gradient on thin plates bending

Milošević-Mitić,

Petrović,

Anđelić

et al. 2024

FME Transactions

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Within the theory of thermo-elasticity, the temperature field of thin plates is commonly defined via two parameters: temperature in the mid-plane and linear temperature gradient normal to the mid-plane. First, the paper analytically proves the justification of that assumption in machine structures. Then, in an analytical closed form, applying the integral transformation method, the thin plate deflection caused by a constant temperature gradient is defined. It is shown that, in that case, the plate deflection does not depend on its thickness but only on the plate dimensions in the mid-plane. Analytically defined values are compared to corresponding values obtained by applying the thin plate finite element, where the temperature field is described using the two mentioned parameters. This finite element is defined and programmed within the Komips program package. The influence of the temperature gradient on the behavior of constructions mostly depends on the type of material. That is why the behavior of some structural elements made of brass, steel, and concrete is analyzed in this paper.

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Section: Introductionmentioning

confidence: 99%

The influence of temperature gradient on thin plates bending

Milošević-Mitić,

Petrović,

Anđelić

et al. 2024

FME Transactions

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“…Others discuss problems associated with belt conveyor drives, electromotors and diagnostics, most often based on vibrations [10][11][12][13]. Jovančić et al [10] derive a methodological procedure for redesigning the shaft, gear box and bucket wheel.…”

Section: Introductionmentioning

confidence: 99%

“…The data obtained in the frequency domain proved correctness. Maneski et al [11] define a numerical-experimental procedure as a very suitable diagnostic tool. They show that the considered constructions failed due to incorrect operational parameters related to vibration of the structures.…”

Section: Introductionmentioning

confidence: 99%

Extensive vibrations of the belt conveyor drive electromotor of a bucket wheel excavator as a result of intensified wear-and-tear of its mount support

Damnjanović¹,

Jovančić²,

Aleksandrović³

2017

J. vibroeng.

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The results of vibration measurements at characteristic points on the belt conveyor drive of bucket wheel excavatorSRs400 manufactured by Takraf are presented in the paper. The operating processes (transport of material on the belt conveyor) belong to the category of impacts, such as fitting, acceleration, sudden loading, and the like, which are extremely pronounced in mining machinery. For monitoring purposes, measurement was undertaken in all three directions, upon overhaul and after 11,850 hours of operation. Movement, speed and acceleration of oscillations were plotted using measured data and the effect of the rear connection of the electromotor mount support on its proper performance was determined.

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“…Operational conditions for systems at open cast mines are difficult and investment value of the system is high. This is why it is necessary to aim at the highest time and capacity utilization possible [7,9,12,15,16].…”

Section: Introductionmentioning

confidence: 99%

The Reliability of Bucket Wheel Excavator - Review of Random Mechanical Failures

2018

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Statistical regularity of random mechanical failures of the bucket wheel excavator will be considered based on dispatcher's reports about excavator-conveyorsspreader (ECS-III) on the Tamnava -West Field Open Cast Mine in Lazarevac (Serbia) system failures in the period from 2003 to 2011. This kind of failures happens suddenly due to undetectable defects, unexplainable causes, and unavoidable failures. Reliability functions R(t), failure rate λ(t) and failure density f(t) of the bucket wheel excavator will be empirically determined. It was concluded that the random failures could be well approximated by the Exponential distribution. Below, serial reliability configuration of the BWE subsystem was analysed and the failure frequency as well as the values of the failure rate by subsystems were determined. Finally, proactive maintenance approach, which represents the latest innovation in the field of maintenance, will be presented. This approach to maintenance utilizes various technologies in order to achieve extension of operational life and elimination of reactive maintenance.

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Condition and behaviour diagnostics of drive groups on belt conveyors

Cited by 11 publications

References 9 publications

The influence of temperature gradient on thin plates bending

The influence of temperature gradient on thin plates bending

Extensive vibrations of the belt conveyor drive electromotor of a bucket wheel excavator as a result of intensified wear-and-tear of its mount support

The Reliability of Bucket Wheel Excavator - Review of Random Mechanical Failures

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