Mathematical Model for Determining the Lifetime of Conveyor Belts Depending on some Selected Parameters

2014 ◽  
Vol 683 ◽  
pp. 147-152
Author(s):  
Miriam Andrejiová ◽  
Anna Grinčová ◽  
Anna Pavlisková
Keyword(s):  
Mathematical Model ◽  
Statistical Methods ◽  
Paint Layer ◽  
Conveyor Belt ◽  
Belt Conveyor ◽  
Layer Width ◽  
Conveyor Belts ◽  
Belt Conveyors ◽  
Transported Material ◽  
Optimal Construction

In the last years, belt conveyors belong to the most frequently used means of transport in various industries. The most important component of the belt conveyor is the conveyor belt. Therefore, it is necessary to pay more attention also to optimal lifetime of conveyor belts. Conveyor belt lifetime is a very complicated issue. It is affected by plenty of factors, including above all the quality structure of the belt conveyor, optimal construction, production, and properties of the conveyor belt as such, adequate solution of conveyance route shifting, reasonable maintenance, and quality repairs of conveyor belts. The paper deals with the exploring the lifetime of conveyor belts depending from on some selected parameters obtained from the operating records of practice (thickness of paint layer, width and length of the belt, conveyor speed and quantity of transported material) with using appropriate mathematical - statistical methods.

scholarly journals Analysis of Reasons for Reduced Strength of Multiply Conveyor Belt Splices

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1512
Author(s):  
Mirosław Bajda ◽  
Monika Hardygóra
Keyword(s):  
Closed Loop ◽  
Conveyor Belt ◽  
Strength Parameter ◽  
Belt Conveyor ◽  
Reliable Operation ◽  
Synthetic Fibers ◽  
Conveyor Belts ◽  
Belt Conveyors ◽  
Main Component ◽  
Transported Material

Belt conveyors are used for the transportation of bulk materials in a number of different branches of industry, especially in mining and power industries or in shipping ports. The main component of a belt conveyor is its belt, which serves both as a support for the transported material along the conveyor route and as an element in the drive transmission system. Being crucial to the effective and reliable operation of the conveyor, the belt is also its most expensive and the least durable element. A conveyor belt comprises a core, covers and edges. A multiply textile belt, in which the core is constructed of synthetic fibers such as polyamide, polyester or aramid, is the oldest and still the most commonly used conveyor belt type. The plies are joined with a thin layer of rubber or another material (usually the material is the same as the material used in the covers), which provides the required delamination strength to the belt and allows the plies to move relative to each other as the belt is bent. Belts are installed on the conveyors in a closed loop in order to join belt sections, whose number and length depend on the length and type of the belt conveyor. Belts are joined with each other in a splicing procedure. The cutting of the belt core causes belt splices to be prone to concentrated stresses. The discontinued core also causes the belt to be the weakest element in a conveyor belt loop. The article presents the results of strength parameter tests that were performed on laboratory and industrial splices and indicated the reasons for the reduced strength of conveyor belt splices. Splice strength is reduced mainly due to incorrect preparation of the spliced surfaces and to different mechanical parameters of the spliced belts.

Application the Renewal Theory to Determining the Models of the Optimal Lifetime for Conveyor Belts

2014 ◽  
Vol 683 ◽  
pp. 97-101
Author(s):  
Anna Grinčová ◽  
Miriam Andrejiová ◽  
Peter Grendel
Keyword(s):  
Renewal Theory ◽  
Conveyor Belt ◽  
Transport Systems ◽  
Belt Conveyor ◽  
Operation Analysis ◽  
Conveyor Belts ◽  
Belt Conveyors ◽  
High Level ◽  
The Cost ◽  
Methods Of Operation

Belt conveyance belongs to the continual transport systems characteristic with high-level conveying performances. Belt conveyors are of significant importance in the transportation of various types of materials in the industries like engineering, metallurgy and construction. The fundamental and the most expensive component of belt conveyors is the conveyor belt which is, during the operation on the belt conveyor, exposed to number of various loads that evoke the process of conveyor belt wear and damage. Lifetime of conveyor belts, which is the determining parameter for the belt conveyance economy and efficiency, is very important for the practice.Issues regarding the conveyor belt lifetime should be solved applying also the methods of operation analysis, especially the linear programming and the renewal theory that uses the theory of probability and mathematic statistics. The objective of our research was to determine the optimal lifetime (optimal performance duration) of a belt conveyor, applying the renewal theory, whereas the research was based on the cost approach of the renewal process.

scholarly journals Determination of the maximum allowable distance between the roller conveyors of a tubular belt conveyor

2019 ◽  
Vol 109 ◽  
pp. 00035
Author(s):  
Ruslan Kiriia ◽  
Tamara Mishchenko
Keyword(s):  
Mathematical Model ◽  
Order Differential Equation ◽  
Limit State ◽  
Conveyor Belt ◽  
Belt Conveyor ◽  
Equilibrium Equations ◽  
Bulk Weight ◽  
Bulk Load ◽  
Belt Conveyors

The article developed a mathematical model of the stress-strain state of a tubular conveyor belt filled with bulk load. In this case, the belt is considered as a thin elastic inextensible cylindrical shell, and the bulk load in the belt is in the limit state. A system of differential equilibrium equations for a tubular belt with a bulk load with respect to forces and bending moments in a belt was obtained, which, when simplified, was reduced to a fourth-order differential equation for belt deflections. Based on this mathematical model, analytical dependencies of the deflections of the tubular conveyor belt on the parameters of the conveyor, the radius and properties of the belt, as well as the properties of the bulk load are obtained and analyzed. As a result, the maximum allowable distance between the roller supports of the tubular conveyor is determined. It was found that the allowable distance between the roller bearings is directly proportional to the tension of the belt and inversely proportional to the square of the radius of the belt and the bulk weight of the load. The research results can be used in the design of tubular belt conveyors transporting bulk load.

Use of Thermovision for Monitoring Temperature Conveyor Belt of Pipe Conveyor

2014 ◽  
Vol 683 ◽  
pp. 238-242 ◽  
Author(s):  
Peter Michalik ◽  
Jozef Zajac
Keyword(s):  
New Technologies ◽  
Functional Dependence ◽  
Conveyor Belt ◽  
Conveyor Belts ◽  
Multiple Measurements ◽  
Transported Material ◽  
Monitoring Temperature

The paper deals with using new technologies to monitor progressive changes in temperature conveyor belts loaded static forces without the transported material. Multiple measurements were performed to demonstrate the functional dependence of temperature conveyor belt of pipe conveyor to the size of the tensioning force.

Parametric Finite Element Analysis on Key Parts of the Conveyor

2011 ◽  
Vol 101-102 ◽  
pp. 755-758 ◽  
Author(s):  
Chun Sheng Yang
Keyword(s):  
Mechanical Characteristics ◽  
Bulk Material ◽  
Viscoelastic Model ◽  
Conveyor Belt ◽  
Belt Conveyor ◽  
Element Analysis ◽  
Conveyor System ◽  
Belt Conveyors ◽  
Parametric Finite Element Analysis ◽  
Research Situation

Belt conveyors are the major equipments for bulk material transportation.This paper analyses the static and dynamic behaviours of the belt, and establishes the dynamic elastic modulus. By analyzing the characteristics of the Kelvin and Maxwell viscoelastic model, the former is selected as the conveyor belt model as it can more realistically reflect the mechanical characteristics of the conveyor system. This paper introduces the development of the belt conveyor, and analyzes the current research situation at home and abroad.

scholarly journals Mini-Crack Detection of Conveyor Belt Based on Laser Excited Thermography

2021 ◽  
Vol 11 (22) ◽  
pp. 10766
Author(s):  
Fei Zeng ◽  
Sheng Zhang ◽  
Tao Wang ◽  
Qing Wu
Keyword(s):  
Crack Detection ◽  
Signal To Noise Ratio ◽  
Thermal Response ◽  
Infrared Camera ◽  
Conveyor Belt ◽  
Detection Accuracy ◽  
Belt Conveyor ◽  
Thermal Images ◽  
High Speeds ◽  
Conveyor Belts

For a belt conveyor, a belt with mini-cracks influences the safety of the operation of the belt conveyor devices significantly. The lumpy material rubbing against a belt with mini-cracks will lead to detrimental tears on the belt while the conveyor works at high speeds. In order to detect mini-cracks in a timely manner, before the occurrence of large tears, a new mini-crack detection method for conveyor belts based on laser excited thermography is proposed. A laser beam is applied to generate a heat wave on the belt surface, so the corresponding thermal images can be recorded by an infrared camera. Then, an algorithm for extracting and fusing the features of mini-crack belt’s thermal images is firstly proposed by using time sequence analysis. It could transform multiple sequential thermal images into a single thermal image according to the frame difference method, so that the infrared thermal response of the mini-crack over time could be recorded quickly. To reveal the features of mini-crack, the power function image enhancement algorithm is proposed. After that, the threshold segmentation and Hough transform algorithm are used to determine the size of the mini-crack. The experimental results show that the mini-cracks with length of 50–140 mm, width of 1–10 mm, and depth of 5 mm can be successfully detected, and the detection accuracy could reach 96%. The detection results of different sizes of mini-crack show that the laser excited thermography has high damage sensitivity (1 mm diameter mini-crack detection), high accuracy (96%), lower power consumption (15 W laser excitation), and high SNR (signal-to-noise ratio).

scholarly journals Application of Lightweight Convolutional Neural Network for Damage Detection of Conveyor Belt

2021 ◽  
Vol 11 (16) ◽  
pp. 7282
Author(s):  
Mengchao Zhang ◽  
Yuan Zhang ◽  
Manshan Zhou ◽  
Kai Jiang ◽  
Hao Shi ◽  
...  
Keyword(s):  
Damage Detection ◽  
Working Conditions ◽  
Detection Method ◽  
Conveyor Belt ◽  
Detection Methods ◽  
Test Accuracy ◽  
Test Results ◽  
Test Speed ◽  
Conveyor Belts ◽  
Belt Conveyors

Aiming at the problem that mining conveyor belts are easily damaged under severe working conditions, the paper proposed a deep learning-based conveyor belt damage detection method. To further explore the possibility of the application of lightweight CNNs in the detection of conveyor belt damage, the paper deeply integrates the MobileNet and Yolov4 network to achieve the lightweight of Yolov4, and performs a test on the exiting conveyor belt damage dataset containing 3000 images. The test results show that the lightweight network can effectively detect the damage of the conveyor belt, with the fastest test speed 70.26 FPS, and the highest test accuracy 93.22%. Compared with the original Yolov4, the accuracy increased by 3.5% with the speed increased by 188%. By comparing other existing detection methods, the strong generalization ability of the model is verified, which provides technical support and empirical reference for the visual monitoring and intelligent development of belt conveyors.

scholarly journals Determination of the limiting angle of inclination of tubular belt conveyor

2020 ◽  
Vol 168 ◽  
pp. 00047
Author(s):  
Ruslan Kiriia ◽  
Andrii Smirnov ◽  
Tetiana Zhyhula ◽  
Todor Zhelyazov
Keyword(s):  
Internal Friction ◽  
Equilibrium State ◽  
Bulk Material ◽  
Conveyor Belt ◽  
Belt Conveyor ◽  
Angle Of Internal Friction ◽  
Angle Of Friction ◽  
Bulk Load ◽  
Belt Conveyors

Currently, the widespread use of tubular belt conveyors is constrained by insufficient justification of the conveyor parameters. In the work, on the basis of the theory of the limiting equilibrium state of bulk load, equations of equilibrium of load on the belt of an inclined tubular conveyor are obtained. It is assumed that the belt was a rigid cylinder filled with bulk material in extreme equilibrium. Based on the obtained equilibrium equation, the analytical dependences of the limiting angle of inclination of the belt conveyor with a tubular belt on the degree of unfilling with the bulk load of the belt and the properties of the bulk load are found. From the analysis of these dependencies it follows that the limiting angle of inclination of the tubular belt conveyor depends on the angle of internal friction of the transported load, the angle of friction of the load on the conveyor belt, the angle of unfilling of the belt with load and does not depend on the radius of the conveyor belt.

scholarly journals Conveyor Belt Damage Detection with the Use of a Two-Layer Neural Network

2021 ◽  
Vol 11 (12) ◽  
pp. 5480
Author(s):  
Agata Kirjanów-Błażej ◽  
Aleksandra Rzeszowska
Keyword(s):  
Neural Network ◽  
Damage Detection ◽  
Conveyor Belt ◽  
Belt Conveyor ◽  
Wear Process ◽  
Non Invasive ◽  
Changes Over Time ◽  
Transported Material ◽  
Matlab Programming

Non-invasive conveyor belt diagnostics in damage detection allows significant reductions of the costs related to belt replacement, as well as the evaluation of belt usability and wear degree changes over time. As a result, it increases safety in the location where the belt is used. Depending on the location of a belt conveyor, its length or the type of the transported material, the belt may undergo wear at different rates, albeit the wear process itself is inevitable. This article presents an artificial intelligence-based approach to the classification of conveyor belt damage. A two-layer neural network was implemented in the MATLAB programming language, with the use of a Deep Learning Toolbox set. As a result of the optimization of the created network, the effectiveness of operation was at the level of 80%.

scholarly journals Sustainable quality of conveyor belts using an integrated knowledge system to support decision-making

2021 ◽  
pp. 117-126
Keyword(s):  
Service Life ◽  
Economic Indicator ◽  
Conveyor Belt ◽  
Knowledge System ◽  
Comprehensive Knowledge ◽  
Conveyor Belts ◽  
Integrated Knowledge System ◽  
Belt Conveyors ◽  
Integrated Knowledge

Environmentally friendly conveyor belts are a modification of conventional conveyor belts. Conveyor belts of the Ecotubelt type enclosed in the shape of a pipe are the most important construction element of hose conveyors, which represent an ecological replacement of classic belt conveyors. Their closed conveyor belt in the shape of a hose allows you to transport material with minimal environmental pollution around the conveyor. A long-term problem for the users of these conveyor belts in the world is their maximum use with regard to their service life within the life cycle of the equipment that uses the conveyor belts. In order to achieve a sustainable quality of conveyor belts related to their service life, it is necessary to propose new procedures for evaluating the quality of conveyor belts in terms of their performance. The object of the research is closed conveyor belts of the Ecotubelt type with special construction. The aim of the research is aimed at gaining comprehensive knowledge about the performance of non-traditional closed conveyor belts in order to achieve their sustainable quality. The article presents a new approach to the evaluation of the quality of the Ecotubelt type conveyor belt using the concept of a knowledge system integrating multidisciplinary knowledge from rubber technologies, the results of laboratory and simulation experiments, as well as mathematical models. The integrated knowledge system includes quality-oriented subsystems within products, processes, services. The result of the model is an economic indicator (TCO) Total Cost Over ship index, which expresses the quality index for the purchase and use of a conveyor belt. The function of the proposed knowledge system for assessing the quality of the conveyor belt is to provide the user with adequate information from a huge amount of data and information, which will enable him to achieve a sustainable quality of classic open as well as closed conveyor belts.

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