Stress analysis of a link for slat chain conveyor

Tsonev, Veselin; Stoychev, G.B.; Chankov, Emanuil

doi:10.1051/matecconf/201713305001

Cited by 4 publications

(2 citation statements)

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“…Li et al 14 adopted multi-body dynamic technology to establish a dynamic model of a new sprocket drive mechanism, and accurately simulated the meshing process of roller chain drive. Veselin et al 15 used the finite element numerical simulation method to analyze the stress of the scraper conveyor, and verified the correctness of the model through experiments. Lu et al 16 proposed a compound sliding mode control method based on the permanent magnet direct drive system to realize the smooth start of the scraper conveyor.…”

Section: Introductionmentioning

confidence: 99%

Tension characteristics analysis of scraper chain of heavy-duty scraper conveyor with time-varying load

Li,

Zhu,

et al. 2023

Preprint

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With the intensification and large-scale of coal mining, scraper conveyors are developing towards high power, large volume, long haul distance and high reliability. It is more and more important to obtain the dynamic tension of the scraper chain with time-varying load. The purpose of this paper is to obtain the dynamic tension of scraper chains of the scraper conveyor with time-varying load. First, according to the structural characteristics and working environment of the scraper conveyor and the polygon effect of the sprocket, the scraper conveyor dynamics model under the action of the time-varying load is established by the finite unit method; Second, the load variation rule of the bearing section is explored when the scraper conveyor and shearer work together; Furthermore, the element resistance of each discrete element, the stiffness coefficient of the scraper chain and the influence of polygonal effect of sprocket wheel are analyzed; And then, the dynamic tension of the scraper chain is obtained by the Hilber-Hughes-Taylor (HHT) method; Finally, the validity of the scraper conveyor dynamic model is verified by the example analysis and field measurement experiment. The obtained results can provide a theoretical basis for the reliability evaluation and parameter optimization of the scraper conveyor.

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Section: Introductionmentioning

confidence: 99%

Tension characteristics analysis of scraper chain of heavy-duty scraper conveyor with time-varying load

Li,

Zhu,

et al. 2023

Preprint

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“…However, not many studies have been found on slat or chain conveyors specifically [17], nor on the stress-strain analyses of their crossbars, while no literature dealing with the bending deformation of the slat conveyor crossbars due to the thermal-mechanical loading was found. The most related study, dealing with the stress-strain analysis of slat conveyors, was the study of Tsonev [18], where an FE analysis of a chain link of a slat conveyor for rock material transportation was performed to identify the reasons for its destruction. Here, the FE model of the chain link was verified by experimental stress measurements.…”

Section: Introductionmentioning

confidence: 99%

Contribution of Various Loads to the Convex Shape of Rock Wool Insulation Slabs during Production

Hladnik,

Jerman

2023

Materials

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Rock wool insulation slabs are produced in special curing ovens, where molten rock wool fibres coated with binder are compressed between two slat conveyors and blown with hot air for vitrification. Often, the cross-section of the final slabs is slightly convex, which is undesirable. The degree of convexity depends on the deformation of the steel crossbars of the slat conveyors, which are subjected to combined pressure and nonlinear temperature loadings. Due to this complex loading state, it is difficult to determine the contribution of individual load to the total deformation. The main aim of the study was to determine these contributions. Temperature and stress measurements of the crossbars were performed during rock wool production. Upon collecting these measurements, a finite element (FE) model of a crossbar was established for the identification of the pressure loading acting on the crossbars, and finally for determination of their deformations. As a main result of the study, an inverse problem-based methodology for the identification of the deflection of a structure due to unknown temperature and pressure loadings was established and applied on the specific case. The deviations between the deformations of the FE crossbars and the final shape of the rock wool slabs were below 10%, which validates the novel methodology.

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