The Ultimate Rotating Resistance of the Belt Conveyors Rollers

Zakharov, A. Yu.; Gerike, Boris; Shiryamov, Dmitriy

doi:10.2991/coal-18.2018.42

Cited by 4 publications

(5 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tests according to the LRM method were carried out on the stand shown in Figure 6 [13]. The roller was installed in a rigid pivotally supporting frame.…”

Section: Loaded Roller Methodsmentioning

confidence: 99%

“…In the roller, the possibility of many inaccuracies related to the mounting of the bearing, the simultaneous occurrence of radial and axial loads, radial runout, unbalance, applied sealing all combine to result in the rotational resistance [13,14]. Therefore, it is justified to choose a satisfactory method of testing roller rotational resistance and conduct laboratory tests to accurately estimate this parameter, especially for operational loads.…”

Section: Introductionmentioning

confidence: 99%

“…During operation rollers, load is radial and axial [13,14]. The radial load is generated by the mass of the transported material, the belt weight itself and the tension force of belt [15].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Methods of Testing of Roller Rotational Resistance in Aspect of Energy Consumption of a Belt Conveyor

2022

View full text Add to dashboard Cite

The testing of roller rotational resistance is essential in improving and searching for new design solutions to reduce the energy consumption of belt transport. The publication presents three methods of testing idler rotational resistance using various laboratory test stands designed and built by the authors. According to the first method, the test consists of applying torque to the roller axis and measuring the resistance force to rotate the roller axis. According to the second method, the test consisted of speeding up the idler, measuring the free stopping time and determining the moment of resistance to rotating the idler. The third stand enables the simulation of loads recommended by the PN-M-46606: 2010 and DIN 22112 standards, as well as operational loads, while measuring the dynamic rotational resistance. The comparative tests used two rollers different in terms of bearing type, hub type and quality of craft. The research object was ø133 × 465 rollers, most commonly used in the raw materials industry. The result of the research carried out is the assessment of the possibility of reducing the energy consumption of the belt conveyor by appropriate selection of the design features of a typical idler.

show abstract

“…Tests according to the LRM method were carried out on the stand shown in Figure 6 [13]. The roller was installed in a rigid pivotally supporting frame.…”

Section: Loaded Roller Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Methods of Testing of Roller Rotational Resistance in Aspect of Energy Consumption of a Belt Conveyor

2022

View full text Add to dashboard Cite

show abstract

“…The idler sealings are usually poor; therefore, the accumulation of dust in conveyor systems can increase the rotation resistance of the conveyor idlers. Similarly, high ambient temperatures and sun reflection in hot, dry climates can increase the bearing temperature, which reduces the bearing life span [13]. The idler bearings' condition can be monitored by analyzing their surface temperatures, noise emissions, and vibrations [14,15].…”

Section: Introductionmentioning

confidence: 99%

Automated Identification of Overheated Belt Conveyor Idlers in Thermal Images with Complex Backgrounds Using Binary Classification with CNN

Siami¹,

Barszcz

Wodecki

et al. 2022

Sensors

View full text Add to dashboard Cite

Mechanical industrial infrastructures in mining sites must be monitored regularly. Conveyor systems are mechanical systems that are commonly used for safe and efficient transportation of bulk goods in mines. Regular inspection of conveyor systems is a challenging task for mining enterprises, as conveyor systems’ lengths can reach tens of kilometers, where several thousand idlers need to be monitored. Considering the harsh environmental conditions that can affect human health, manual inspection of conveyor systems can be extremely difficult. Hence, the authors proposed an automatic robotics-based inspection for condition monitoring of belt conveyor idlers using infrared images, instead of vibrations and acoustic signals that are commonly used for condition monitoring applications. The first step in the whole process is to segment the overheated idlers from the complex background. However, classical image segmentation techniques do not always deliver accurate results in the detection of target in infrared images with complex backgrounds. For improving the quality of captured infrared images, preprocessing stages are introduced. Afterward, an anomaly detection method based on an outlier detection technique is applied to the preprocessed image for the segmentation of hotspots. Due to the presence of different thermal sources in mining sites that can be captured and wrongly identified as overheated idlers, in this research, we address the overheated idler detection process as an image binary classification task. For this reason, a Convolutional Neural Network (CNN) was used for the binary classification of the segmented thermal images. The accuracy of the proposed condition monitoring technique was compared with our previous research. The metrics for the previous methodology reach a precision of 0.4590 and an F1 score of 0.6292. The metrics for the proposed method reach a precision of 0.9740 and an F1 score of 0.9782. The proposed classification method considerably improved our previous results in terms of the true identification of overheated idlers in the presence of complex backgrounds.

show abstract

“…Idler rolling resistance is the value of the force that must be applied to the casing surface in order to overcome the friction resistance moment in the bearing units [3]. The value of idler rolling resistance is influenced by many factors related to its design, quality of workmanship and operating conditions [4][5][6][7]. Table 1 lists the sources of idler rolling resistance.…”

Section: Introductionmentioning

confidence: 99%

Influence of Design Parameters of Idler Bearing Units on the Energy Consumption of a Belt Conveyor

2021

View full text Add to dashboard Cite

This publication presents the results of laboratory tests of idler rolling resistance under operational loads. Operational loads are understood as radial and axial forces acting on the idler, with values corresponding to those that occur in the conditions of its operation in copper ore mines. Knowing the rolling resistance is important not only at the stage of conveyor design, selection of the drive power or calculations of the necessary belt strength, but also when improving and searching for new idler design solutions. The idlers adopted for this research were differentiated in terms of bearings and idler axial clearance. The investigations were carried out on a unique test stand designed and built by the authors. The construction of the stand enables simulating operational loads while measuring the rolling resistance. The test rig measures idler bearing losses and rolling drag, not belt indentation rolling resistance. The object of the research were ø133×465 idlers, which are most commonly used in the raw materials industry. The results show the possibility of reducing the belt conveyor energy consumption by appropriate selection of the design features of the idler bearing unit.

show abstract

The Ultimate Rotating Resistance of the Belt Conveyors Rollers

Cited by 4 publications

References 2 publications

Methods of Testing of Roller Rotational Resistance in Aspect of Energy Consumption of a Belt Conveyor

Methods of Testing of Roller Rotational Resistance in Aspect of Energy Consumption of a Belt Conveyor

Automated Identification of Overheated Belt Conveyor Idlers in Thermal Images with Complex Backgrounds Using Binary Classification with CNN

Influence of Design Parameters of Idler Bearing Units on the Energy Consumption of a Belt Conveyor

Contact Info

Product

Resources

About