Готові списки джерел за темами / Scraper conveyor

Добірка наукової літератури з теми "Scraper conveyor"

Автор: Grafiati
Опубліковано: 30 травня 2022
Оновлено: 31 травня 2022

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Статті в журналах з теми "Scraper conveyor"

1

Dolipski, Marian, Piotr Cheluszka, Eryk Remiorz, and Piotr Sobota. "Follow-Up Chain Tension in an Armoured Face Conveyor / Nadążne Napinanie Łańcucha Zgrzebłowego W Przenośniku Ścianowym." Archives of Mining Sciences 60, no. 1 (March 1, 2015): 25–38. http://dx.doi.org/10.1515/amsc-2015-0002.

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Анотація:
Abstract Initial chain tension in armoured face conveyors, in which operating conditions vary constantly, should be adjusted automatically to adapt it to the needs arising. The manufacturers of such conveyors are now offering a possibility of equipping a conveyor with a drive with a telescopic trough enabling stepless change of the scraper chain contour by shifting the drive frame. The work presents the outcomes of computer investigations performed using an own mathematical model of an armoured face conveyor with a main and auxiliary drive equipped with a telescopic trough and an automatic initial chain tension adjustment system with the ASTEN algorithm. The ASTEN algorithm is responding to changes in scraper chain elongation caused by changes to conveyor configuration and also by a varying mined coal load resulting from interworking with a mining machine.
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2

Xia, Rui, Xuewen Wang, Bo Li, Xing Wei, and Zhaojian Yang. "The prediction of wear on a scraper conveyor chute affected by different factors based on the discrete element method." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 17 (July 7, 2019): 6229–39. http://dx.doi.org/10.1177/0954406219861130.

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During long-term operation, the scraper conveyor chute is seriously attrited by the friction of coal, gangue, and scraper chain. In this study, the discrete element method was applied to establish the bulk coal–scraper conveyor interaction analysis model to predict the wear of a scraper conveyor chute during the transporting process. The wear of the chute was investigated under various working conditions and bulk coal characteristics. Results indicated that the chute wear has a negative correlation with the laying angle of the scraper conveyor and increased with the chain speed. The wear was more severe as the increasing of gangue content, hardness, and size of the coal particles. In addition, the wear degree in different sections on the chute was predicted. Results showed that the section near the coal falling point underwent more intense collisions and impact and, thus, the wear was more serious at this location. The wear loss decreased with the increasing distance away from this point. This research can be used for predicting the wear of a scraper conveyor working under different mines. What’s more, the wear-resistant treatment can be applied on the particular areas according to the mine conditions based on this study.
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3

Shprekher, Dmitry, Gennady Babokin, Evgeny Kolesnikov, and Dmitry Ovsyannikov. "Research of Load Unbalance of a Two- Motor Variable Frequency Dtive for Scraper Conveyor." Известия высших учебных заведений. Электромеханика 64, no. 4-5 (2021): 37–45. http://dx.doi.org/10.17213/0136-3360-2021-4-5-37-45.

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The article analyzes the uneven loading of the scraper conveyor electric motors. The most common type of multi-motor conveyor is considered here: two-drive, with head and end drives connected through gearboxes and sprockets by an endless chain with scrapers. The simulation results are presented for three variants of com-binations of parameters of electric drives. It has been established that the use of a two-motor variable frequen-cy drive of a scraper conveyor powered by a single frequency converter inevitably entails uneven loading of the electric motors of the head and end drives. To eliminate this disadvantage, it is proposed to supply each electric motor from its own frequency converter. A system of automatic load balancing is proposed. The implementation and the result of the work of the load balancing system are carried out on a model in the Matlab / Simulink system.
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4

Wang, Yanping, and Shaoying Wang. "Coordinated Speed Planning Strategy of Scraper Conveyor and Shearer Based on Scraper Conveyor Loads Analysis." IOP Conference Series: Earth and Environmental Science 267 (June 8, 2019): 042044. http://dx.doi.org/10.1088/1755-1315/267/4/042044.

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5

Yakhin, Sergey, Il'gam Masalimov, Marat Nafikov, and Ramis Mardanov. "OPTIONS FOR PLANE-PARALLEL MOVEMENT OF GRAINS IN A SCRAPER CONVEYOR." Vestnik of Kazan State Agrarian University 14, no. 4 (April 12, 2020): 96–99. http://dx.doi.org/10.12737/2073-0462-2020-96-99.

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Анотація:
The kinematics of plane-parallel motion of a wheat or rye grain when moving in an inclined position in a scraper conveyor is considered. A kinematic diagram of the plane-parallel motion of the grain in the scraper conveyor was compiled, the position of the instantaneous center of the flat figure was determined, and options for the movement of grain in an inclined position at various possible positions of instantaneous center were considered. The profile of the grains is outlined by an elliptical curve. The point of contact of the elliptical profile of the caryopsis with the scraper makes a complex motion, while the horizontal speed of the scraper is portable for it, the sliding speed on the surface of the scraper is relative. The speed of the touch point of the grain with the pan is horizontal. For six possible positions of the instantaneous center, the directions of the velocities of the points of contact of the grains and the friction forces acting in them are determined. Grains of wheat or rye, moved in a scraper conveyor, in some cases can make plane-parallel movement. The point of contact of the elliptical profile of the caryopsis with the scraper makes a complex motion, while the horizontal speed of the scraper is portable for it, the sliding speed on the surface of the scraper is relative. The speed of the touch point 2 of the grain with the pan is horizontal.
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6

Zhang, Dong Sheng, Xiao Hong Liu, Jian Guo Shi, Jun Mao, and Zhong Li. "Scraper Conveyor Dynamic Modeling and Simulation." Advanced Materials Research 217-218 (March 2011): 426–30. http://dx.doi.org/10.4028/www.scientific.net/amr.217-218.426.

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Анотація:
Modeled nonlinearity, time-varying, dynamic coupling finite element model of scraper conveyor according to its actual working condition in the mining, studied the transmission mechanism of bulk material power and its parameters test methods，constructed the shape function of scraper conveyor circuitry, realized the computer automatic modeling, by the example carried on digital simulation of all of working condition such as starting, freely stoppage, abnormal load, chains blocked, the difference of chain’s pitch and the chain wheel polygon effect, and so on.
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7

Zhu, Xin Zhong, Yun Ting Zheng, and Guang Zhen Cheng. "The Spiral Collection-Scraper Conveyor Loader." Applied Mechanics and Materials 201-202 (October 2012): 147–50. http://dx.doi.org/10.4028/www.scientific.net/amm.201-202.147.

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This article is intended to provide a mobile loader, it is consist of spiral drum collecting device, chain transmission device, rotary table, expansion bend and mobile platform vehicle. design the rotary table which can rotate about a fixed axis relative to the mobile platform vehicle in the horizontal plane, and the expansion bend which can rotate about a fixed axis relative to the rotary table in the vertical plane, Combined with electrical control system and to realize the function requirements of the loader, it mainly used for coal mine underground sump cleaning, and focus on the structure, working principle and process of the spiral collection-scraper loader, point out the applicable working conditions and main features of the machine.
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8

Ren, W. J., L. Wang, Q. H. Mao, S. B. Jiang, and S. Huang. "Coupling Properties of Chain Drive System under Various and Eccentric Loads." International Journal of Simulation Modelling 19, no. 4 (December 5, 2020): 643–54. http://dx.doi.org/10.2507/ijsimm19-4-535.

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Анотація:
The chain drive system is a core subsystem of heavy scraper conveyors. During operation, violent oscillations of fluctuating loads on the chain and uneven loads at the two chain sides are observed, thus intensifying chain wear and even causing chain breakage. The dynamic properties of a chain drive system under various load and eccentric load were discussed thoroughly by combining dynamic and discrete element coupling analyses to improve the reliability of the scraper conveyor. Based on the discrete element method and multibody dynamic theory, a coupling analysis model of a scraper conveyor was constructed, and a simulation analysis on coal conveying process under various load and eccentric load was carried out. Simulation results demonstrate that the transverse vibration of the chain is positively related to coal conveying quantity, whereas longitudinal vibration is negatively correlated to coal conveying quantity. The transverse vibration rate under full loads is 513.62 % higher than that under idle condition, while the longitudinal vibration rate is 53.44 % lower. The effects of coals on transverse vibration and longitudinal vibration of a chain ring are opposite.
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9

Wojnar, Grzegorz, Rafał Burdzik, Andrzej N. Wieczorek, and Łukasz Konieczny. "Multidimensional Data Interpretation of Vibration Signals Registered in Different Locations for System Condition Monitoring of a Three-Stage Gear Transmission Operating under Difficult Conditions." Sensors 21, no. 23 (November 24, 2021): 7808. http://dx.doi.org/10.3390/s21237808.

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Анотація:
This article provides a discussion of the results of studies on the original system condition monitoring of a three-stage transmission with a bevel–cylindrical–planetary configuration installed in an experimental scraper conveyor. Due to the high vibroactivity of gear transmissions operating under the impact of a scraper conveyor’s chain drive, these unwanted effects of machine operating vibrations were assumed to be applied. For purposes of the study, vibrations were measured on the driving transmission housing in an idling scraper conveyor. The main purpose of the study was to establish the frequencies characteristic of the gear transmission, and to determine whether it was possible to run vibroacoustic diagnostics of the same transmission under conditions with a considerable impact of the conveyor chain. An additional cognitively significant research goal was the analysis of the dependence of the diagnostic utility of the signal depending on the sensor mounting point. Five different locations of three-axis sensors oriented to the next stages and various types of gears were determined, as well as places characterized by high spatial accessibility, which are often selected as places for measuring the vibration of gears. Using MATLAB software, a program was written that was calibrated and adapted to the specifics of the measuring equipment based on the collected test results. As a result, it was possible to obtain a multidimensional data interpretation of vibration signals of system condition monitoring of a three-stage gear transmission operating under difficult conditions. The results were based on signals registered on the real three-stage gear transmission operating under the impact of a scraper conveyor’s chain drive.
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10

Xia, Rui, Xuewen Wang, Bo Li, Xing Wei, and Zhaojian Yang. "Discrete Element Method- (DEM-) Based Study on the Wear Mechanism and Wear Regularity in Scraper Conveyor Chutes." Mathematical Problems in Engineering 2019 (January 3, 2019): 1–12. http://dx.doi.org/10.1155/2019/4191570.

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Анотація:
The scraper conveyor is the key conveying equipment for fully mechanized coal mining. Wear failure of the chute is the main form of failure of the scraper conveyor. In this study, the discrete element method (DEM) was combined with the wear model. The wear mechanism and wear regularity of the chute were explored by tracking the changes in the position of coal particles during the wear process. After the validation of wear simulation, a wear test of coal for different intrinsic parameters was designed. In one wear cycle, the three-body wear was about 32.84 times that of the two-body wear. In the research range, the wear of the scraper conveyor chute increased with the increase of Poisson’s ratio, shear modulus, and density of the coal. The shear modulus showed remarkable effect on the wear of the chute, followed by Poisson’s ratio and density. There existed a linear relationship between the shear modulus and wear (R2 = 0.8232). This study is expected to be used to predict the wear of the scraper conveyor chute and provide a theoretical basis for the applicability of the chute in different mines.
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Більше джерел

Дисертації з теми "Scraper conveyor"

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Мацагор, Данило Дмитрович. "Конвеєр скребковий з модернізацією скребків". Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2021. https://ela.kpi.ua/handle/123456789/42060.

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Анотація:
Проект містить опис технологічного процесу, в якому приймає участь стрічковий конвеєр, розглянуто його призначення та місце в технологічній схемі. Надані технічні характеристики, розглянуті конструкція і принцип дії стрічкового конвеєра, виконані параметричні, кінематичні та розрахунки на міцність підшипників і стрічки, які підтверджують працездатність та надійність конструкції машини. Зроблено літературно – патентний пошук конструкцій стрічкового конвеєра з метою обрання варіанта модернізації скребків. Обрано модернізацію, що представляє собою зміни конструкції, введення нових елементів, що підвищує надійність натяжного пристрою та покращує працездатність конвеєра в цілому. Також розглянуто відповідність розроблюваної машини вимогам охорони праці та надані рекомендації щодо монтажу та експлуатації пристрою до виготовлення валу.
The project contains a description of the technological process in which the belt conveyor takes part, its purpose and place in the technological scheme are considered. The technical characteristics are given, the design and the principle of operation of the belt conveyor are considered, parametric, kinematic and calculations on the strength of bearings and belts are performed, which confirm the efficiency and reliability of the machine design. Literary - patent search of belt conveyor constructions is made in order to choose the option of scraper modernization. Modernization is chosen, which is a change in design, the introduction of new elements, which increases the reliability of the tensioning device and improves the performance of the conveyor as a whole. The compliance of the developed machine with the requirements of labor protection is also considered and recommendations are given on the installation and operation of the device before the shaft is manufactured.
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2

André, Meza Kahn. "Energy flow model for a scrapper conveyor unit." Thesis, KTH, Hållbar produktionsutveckling (ML), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-257954.

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Värmevärden AB is an energy company that distributes district heating. One of their challenges today is to reduce the energy losses and wear that occur in the plant's scrapper conveyor unit. The conveyor belt is in constant motion whether it is transporting fuel or going unloaded at idle. An understanding of the module's energy flow needs to be mapped. An energy flow behavior model for the scrapper conveyor unit is presented. The energy flow in the startup sequence when the belt runs at idle and at full load is simulated. The simulations visualize the velocity and acceleration of the belt as a function of time and the current flow in the engine when getting started. The model allows changes on various parameters such as engine velocity, current limitations, work efficiency and enables the calculation of necessary material to achieve a desired power delivery. With a current-limited engine of 140 [A], a lower acceleration is obtained as the belt transports the fuel masses. Energy losses are also reduced as the belt is started by their own mass when transportation is needed. This means that the wear on the components of the plant decreases as transportation takes a more controlled form.
Värmevärden AB är ett energibolag som distribuerar fjärrvärme. En av deras utmaningar idag är att minska energiförlusterna och slitaget som uppstår i anläggningens skrapstransportörs modul. Transportbandet är i konstant rörelse vare sig det transporterar bränsle eller går olastad i tomgång. Förståelse för modulens energiflöde behöver kartläggas. En beteendemodell för skraptransportörens modul presenteras. Genom analys av energiflödet i systemet simuleras startförloppet när bandet körs i tomgång och vid full last. Simuleringarna visualiserar bandets hastighet och acceleration som funktion av tid och även motorns strömförlopp under uppstartsfasen. Modellen tillåter ändringar på diverse parametrar såsom motorns varvtal, strömbegränsning, verkningsgrad och möjliggör även framräkningen av nödvändigt material för att uppnå en viss leverans uteffekt. Med en strömbegränsad motor på 140 [A] fås en lägre acceleration när bandet transporterar bränslemassorna. Energiförlusterna minskar också eftersom bandet sätts igång av massornas egenvikt när transporteringen behövs. Detta medför att slitaget på anläggningens komponenter minskar i och med att transporten sker i mera kontrollerade former.
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Книги з теми "Scraper conveyor"

1

Rhoades, C. A. Development and testing of a pneumatic scraper blade for conveyor belt cleaning. Washington, D.C: U.S. Dept. of the Interior, Bureau of Mines, 1989.

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2

Publishing, Gisele. Packs Home Farm Coloring: 45 Coloring Milk, Scraper, Gloves, Corn, Vegetables, Conveyor, House, Barn for Girls 8-12 Picture Quizzes Words Activity Coloring Books. Independently Published, 2020.

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Частини книг з теми "Scraper conveyor"

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Wang, Xuewen, Bo Li, Rui Xia, and Haozhou Ma. "Mechanical Effect of Scraper Conveyor Based on DEM." In Engineering Applications of Computational Methods, 57–82. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7977-6_4.

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2

Przystałka, Piotr, and Andrzej Katunin. "Evolutionary Approach for Tuning of Longwall Scraper Conveyor Model." In Recent Advances in Computational Optimization, 73–88. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-59861-1_5.

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3

Yao, Yanping, Wenjun Meng, Ziming Kou, and Zhicheng Liao. "Resistance Analysis for Bulk Materials in the Vertical Section of Pipe Scraper Conveyor." In Lecture Notes in Electrical Engineering, 327–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44674-4_31.

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4

Świder, Jerzy, Krzysztof Herbuś, and Kamil Szewerda. "Control of Selected Operational Parameters of the Scraper Conveyor to Improve Its Working Conditions." In Advances in Intelligent Systems and Computing, 395–405. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-15857-6_39.

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5

Wang, Xuewen, Bo Li, Rui Xia, and Haozhou Ma. "Application of DEM on the Design of Wear-Resistant Bionic Chute of Scraper Conveyor." In Engineering Applications of Computational Methods, 83–102. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7977-6_5.

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6

Xue, Si-sheng, Xin-chun Li, and Xiang-yu Xu. "Fault Tree and Bayesian Network Based Scraper Conveyer Fault Diagnosis." In Proceedings of the 22nd International Conference on Industrial Engineering and Engineering Management 2015, 783–95. Paris: Atlantis Press, 2016. http://dx.doi.org/10.2991/978-94-6239-180-2_74.

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Sang, J. B., B. Liu, S. F. Xing, L. C. Yang, and Y. H. Qie. "Application and Research of Structure Topology Optimization of Scraper Conveyer with MSC.Nastran.optishape." In Computational Methods in Engineering & Science, 309. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-48260-4_155.

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Тези доповідей конференцій з теми "Scraper conveyor"

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Chen, Hongwei, and Rongjie Wang. "Study on Wear of Scraper Conveyor Chute." In 2015 International Conference on Intelligent Systems Research and Mechatronics Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/isrme-15.2015.467.

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2

Liu, Xiaohong, and Lubin Wei. "Vibration Research on the Polygonal Effect of Scraper Conveyor." In 2017 International Conference on Computer Technology, Electronics and Communication (ICCTEC). IEEE, 2017. http://dx.doi.org/10.1109/icctec.2017.00192.

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Voronin, Vyacheslav A., and Fedor S. Nepsha. "Modelling and Simulation of Scraper Face Conveyor Electric Drive." In 2020 Ural Smart Energy Conference (USEC). IEEE, 2020. http://dx.doi.org/10.1109/usec50097.2020.9281202.

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4

Sen, Sun, Ma Xian Min, and Yang Zhan She. "Diagnosis of Coal Scraper Conveyor Based on Fuzzy Fault Tree." In 2015 Seventh International Conference on Measuring Technology and Mechatronics Automation (ICMTMA). IEEE, 2015. http://dx.doi.org/10.1109/icmtma.2015.100.

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5

Yang, Jianjian, Shichen Fu, and Dong Wang. "Dynamic simulation of startup-characteristics of scraper conveyor based AMEsim." In 2015 IEEE International Conference on Mechatronics and Automation (ICMA). IEEE, 2015. http://dx.doi.org/10.1109/icma.2015.7237513.

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Przystałka, Piotr, and Andrzej Katunin. "A Concept of Automatic Tuning of Longwall Scraper Conveyor Model." In 2016 Federated Conference on Computer Science and Information Systems. IEEE, 2016. http://dx.doi.org/10.15439/2016f258.

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7

Xu, Liran, Yu Sun, and Hanwu Liu. "Finite Element Analysis of Vibration and Noise of Scraper Conveyor." In 2015 International Conference on Industrial Technology and Management Science. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/itms-15.2015.287.

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8

Chunzhi, Zhang, and Meng Guoying. "Dynamic modeling of scraper conveyor sprocket transmission system and simulation analysis." In 2011 IEEE International Conference on Mechatronics and Automation (ICMA). IEEE, 2011. http://dx.doi.org/10.1109/icma.2011.5985779.

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Liping Zhang, Wei Li, Yuqiao Wang, Guangxin Zhou, Qigao Fan, Xuefeng Yang, and Guo Ye. "Fuzzy control system simulation of retractable tail frame of scraper conveyor." In 2011 3rd International Conference on Advanced Computer Control (ICACC). IEEE, 2011. http://dx.doi.org/10.1109/icacc.2011.6016419.

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10

Qin, Xinchuan, Chaoyue Jiang, and SuXing Qian. "The feasibility study of permanent magnet coupling applied in scraper conveyor." In 2011 International Conference on Electrical and Control Engineering (ICECE). IEEE, 2011. http://dx.doi.org/10.1109/iceceng.2011.6057413.

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Звіти організацій з теми "Scraper conveyor"

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Massachusetts laborer dies when caught in conveyor machinery at scrap metal business. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, February 1995. http://dx.doi.org/10.26616/nioshsface94ma021.

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