Classification of Impact Damage on A Rubber-Textile Conveyor Belt: A Review

Alviari, Luana Putri; Anggamawarti, Merlina Fitri; Sanjiwani, Yudistira; Risonarta, Victor Yuardi

doi:10.21776/mechta.2020.001.01.4

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…Material grains of mass m [kg] with sharp edges falling from a height h [m] onto the working surface of the conveyor belt, at the point of the transfer or hopper, damage the conveyor belt due to their impact energy [2][3][4]. Repeated impacts of material grains can severely damage the covering rubber layer as well as the supporting frame of the conveyor belt and lead to its destruction [5][6][7]. One of the possible solutions, which is used in practice to limit the high values of the dynamic effects of falling material grains on the conveyor belt, is the use of so-called ʺimpact rollersʺ at the filling points (the hopper) and the transfer points of conveyor belts.…”

Section: Introductionmentioning

confidence: 99%

Measuring Device Detecting Impact Forces on Impact Rollers

Hrabovský,

Kurač,

Pravda

et al. 2024

Preprint

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This paper presents laboratory devices on which experimental measurements were carried out to prove the validity of the assumption about the reduction of vibrations transmitted to the conveyor belt structure generated by the impact forces of falling material grains in the places of transfer or on the hoppers of conveyor belts. In order to limit damage to the conveyor belts caused by the impact of the sharp edges of material grains, conveyor belts are supported by impact rollers or impact rubber rods in the places of transfers and on the hoppers of belt conveyors. The flattened ends of the impact rollers are inserted into the grooves of steel brackets installed on the supports of the fixed conveyor idlers of a conventional design. In this paper, a special modification of the fixed conveyor idler is presented, which consists of inserting plastic brackets into the structurally modified roller axle holders of the fixed conveyor idler. Measurements were carried out on the first laboratory device, which showed that the specially modified fixed conveyor idler resulted in a higher damping of up to 15% of the impact forces of the falling weight on the rubberized hoop of the impact roller shell compared to the conventional fixed conveyor idler design. Measurements carried out on the second laboratory device show that the effective vibration velocity values detected at the points where the impact roller axis fits into the fixed roller table holder, i.e. points B and D, are higher than when using plastic brackets, up to 6% for a 108 mm diameter roller, compared to steel impact roller brackets.

show abstract

Section: Introductionmentioning

confidence: 99%

Measuring Device Detecting Impact Forces on Impact Rollers

Hrabovský,

Kurač,

Pravda

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Material grains of mass m [kg] with sharp edges falling from a height h [m] onto the working surface of the conveyor belt at the point of the transfer or hopper damage the conveyor belt due to their impact energy [2][3][4]. Repeated impacts of material grains can severely damage the covering rubber layer as well as the supporting frame of the conveyor belt and lead to its destruction [5][6][7]. One of the possible solutions, which is used in practice to limit the high values of the dynamic effects of falling material grains on the conveyor belt, is the use of so-called "impact rollers" at the filling points (the hopper) and the transfer points of conveyor belts.…”

Section: Introductionmentioning

confidence: 99%

Measuring Device Detecting Impact Forces on Impact Rollers

Hrabovský,

Kurač,

Pravda

et al. 2024

Processes

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This paper presents laboratory devices on which measurements were carried out to prove the validity of the assumption about the reduction in vibrations transmitted to the conveyor belt structure generated by the impact forces of falling material grains in the places of transfer or on the hoppers of conveyor belts. In order to limit damage to the conveyor belts caused by the impact of the sharp edges of material grains, conveyor belts are supported by impact rollers or impact rubber rods. A special modification of the fixed conveyor idler is presented, which consists of inserting plastic brackets into the structurally modified roller axle holders of the fixed conveyor idler. Measurements showed that the specially modified fixed conveyor idler resulted in a higher damping of up to 15% of the impact forces of the falling weight on the rubberized hoop of the impact roller shell compared to the conventional fixed conveyor idler design. Measurements carried out show that the effective vibration velocity values detected at the points where the impact roller axis fits into the fixed roller table holder are higher than when using plastic brackets, up to 6% for a 108-mm-diameter roller, compared to steel impact roller brackets.

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“…In order to achieve the high standards of safety and operational reliability required for belt conveyors, there is a requirement for systematic testing of conveyor belts and their joints [21,22].…”

Section: Introductionmentioning

confidence: 99%

Transport Performance of a Steeply Situated Belt Conveyor

Hrabovský

Fries

2021

Energies

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The paper presents a methodology for determining the volume of a batch of conveyed material located before a transverse partition of a certain height and the distance over which the batch of material extends on the working surface of the conveyor belt along its longitudinal axis. Knowing the geometric dimensions of the transported batch of material makes it possible to appropriately set the spacing of the belt cleats and thereby to optimally determine the conveying performance of the inclined belt conveyor. When the angle of inclination of a conveyor with a straight idler frame is equal to the angle of surcharge of the conveyed material, then no layer of material is carried on the surface of the belt. If the conveyor belt is guided along a trough idler frame, only the lower cross-section of the filling of material is used. An increase in the cross-section of the belt load of a conveyor inclined at an angle, which exceeds the angle of repose of the conveyed material, can be achieved by installing regularly spaced belt cleats around the circumference of the working surface of the endless loop of the conveyor belt. The volume of the batch of material retained by the belt cleat depends on the height and width of the cleat and whether or not the conveyor belt is provided with corrugated side edges. The paper presents theoretically determined relationships that can be used to determine the size of the transverse and longitudinal area and the volume of the batch of material spread on the surface of the conveyor belt in front of the cleat. The experiments performed provide the distances of the material distribution on the surface of the conveyor belt depending on the height of the cleat and the angle of inclination of the conveyor belt.

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Classification of Impact Damage on A Rubber-Textile Conveyor Belt: A Review

Cited by 5 publications

References 21 publications

Measuring Device Detecting Impact Forces on Impact Rollers

Measuring Device Detecting Impact Forces on Impact Rollers

Measuring Device Detecting Impact Forces on Impact Rollers

Transport Performance of a Steeply Situated Belt Conveyor

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