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Articles de revues sur le sujet « Continuous conveyor »

Auteur : Grafiati
Publié le 4 juin 2021
Mis à jour le 11 février 2022

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1

Kawalec, Witold, Natalia Suchorab, Martyna Konieczna-Fuławka et Robert Król. « Specific Energy Consumption of a Belt Conveyor System in a Continuous Surface Mine ». Energies 13, no 19 (7 octobre 2020) : 5214. http://dx.doi.org/10.3390/en13195214.

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Belt conveyor (BC) transportation systems are considered to be the most effective for handling large volumes of bulk material. With regards to the rules of sustainable development, the improvement of belt conveyor technology is, in many cases, focused on environmental issues, which include the idea of energy usage optimization. The key issue in an energy-efficient transportation system is reducing the value of specific energy consumption (SEC) by increasing conveyor capacity whilst decreasing belt conveyor motion resistance. The main idea of this paper is to conduct an analysis of the modernization of existing belt conveyor transportation systems operated in open-pit lignite mines, in order to achieve relatively small electric energy consumption for a considered transportation task. The first part of the paper investigates the relationship between a conveyor’s SEC and material flow rate for various conveyor design parameters. Then, based on multi-parameter simulations, an analysis of electric energy consumption for a belt conveyor transportation system is carried out. Finally, an energy-saving, environmentally friendly solution is presented.
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Tomobe, Yuki, Ryosuke Tasaki, Takanori Yamazaki, Hideo Ohnishi, Masaaki Kobayashi et Shigeru Kurosu. « Continuous Mass Measurement on Conveyor Belt ». IEEJ Transactions on Electronics, Information and Systems 126, no 2 (2006) : 264–69. http://dx.doi.org/10.1541/ieejeiss.126.264.

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Penno, Eric, Sebastian Weise et Markus Golder. « Long Flat Continuous Conveyors without Critical Transfer Points ». innoTRAC Journal 1 (3 décembre 2020) : 74–82. http://dx.doi.org/10.14464/innotrac.v1i0.453.

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Conventionally, a series of several individual conveyors is necessary to realise long conveyor lines. This segmentation creates critical transfer points for the transport of goods. The number of transfer points and the overall height can be minimised by direct drives based on magnetic toothed belts and carriers attached to the mat chains. For example, a modular belt conveyor with an overall height of 100 mm and a width of 1 m can reach a length of well over 10 m. The friction between the mat chain and the sliding plane can be reduced by using alternative sliding partners such as a textile or a sliding support made of wood-based materials. These measures increase process and work safety and allow the system to be designed to be energy efficient.
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Chaudhari, Ramkrushna, et A. G. Thakur. « Modern Conveyor Pulleys with Modified End Disc Design, Locking Device & ; Gearless Drive ». International Journal of Innovative Technology and Exploring Engineering 10, no 9 (30 juillet 2021) : 93–99. http://dx.doi.org/10.35940/ijitee.i9380.0710921.

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Nowadays, in order to mine the ore economically, it became necessary to increase the tonnage of mined ore, as well as to improve the method of transporting the ore that is to be mined. Belt conveyors are essential equipment for transferring the material from one place to targeted place and conveyor pulleys are the major component of conveyor system. Such kind of conveyor system needs reliable conveyor pulleys. Different type of conveyor pulleys are used throughout the conveyor system as per their function. In this research, the agenda is on modification of present conveyor pulley design by removing the most common causes of catastrophic fatigue failure which are used for high tension application in mining industry. The target during the research is on improvement of end disc design, elimination keyed connection in between shaft and hub by using locking device. The another development is to use of gearless drive technology for drive pulleys. This is obtained by continuous improvement and strategic standardized process to cater the need of mining application. These modified conveyor pulleys are best suitable for high capacity, high tension long distance conveyors used in mining industry.
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Zhang, Chun You. « Design of Belt Conveyor Control System Based on Motion Controller ». Applied Mechanics and Materials 733 (février 2015) : 710–13. http://dx.doi.org/10.4028/www.scientific.net/amm.733.710.

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Belt conveyor is a kind of continuous conveying machinery that its transmission capacity is large, it is widely used in many industries and it has broad prospects. Belt conveyor is commonly used the traditional PLC to control, the openness is low, the portability is poor, and it is not conducive to the development of the belt conveyor. This paper presents a design of belt conveyor control system with motion controller as control core; respectively the hardware design and software design are introduced. The control system has good flexibility, high open degree, it is in line with the future development trend of belt conveyer, and it has certain guiding significance.
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Kawalec, Witold, et Robert Król. « Generating of Electric Energy by a Declined Overburden Conveyor in a Continuous Surface Mine ». Energies 14, no 13 (4 juillet 2021) : 4030. http://dx.doi.org/10.3390/en14134030.

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Exploitation of lignite in continuous surface mines requires removing masses of overburden, which are hauled to a dumpsite. There are some technological arrangements where the overburden is transported several dozen meters down to a spreader operating on a lower located dumping level. Depending on an angle of a declined transportation route, there is a possibility to convert the potential gravitational energy of conveyed down overburden masses into electric energy. To recover the maximum percentage of stored energy, an energy-effective and fully loaded belt conveyor should work in a generator mode. Due to the implementation of such a solution, a lignite continuous surface mine, which is a great electric energy consumer, can obtain the status of an electricity prosumer and reduce its environmental impact, in particular demonstrating significant savings in primary energy consumption. Though lignite surface mining is phasing out in Europe, the recuperative, overburden conveyors for downhill transport match up the targets of sustainable mining, understood as getting the maximum benefits from the exploited natural resources. According to the analyzed case study, an investment into the installation of regenerative inverters for the electric power supply of the declined overburden conveyor would pay off within 3–4 years.
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Li, Junxia, et Xiaoxu Pang. « Belt Conveyor Dynamic Characteristics and Influential Factors ». Shock and Vibration 2018 (2018) : 1–13. http://dx.doi.org/10.1155/2018/8106879.

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This paper uses the Kelvin-Voigt viscoelastic model to establish the continuous dynamic equations for tail hammer tension belt conveyors. The viscoelastic continuity equations are solved using the generalized coordinate method. We analyze various factors influencing longitudinal vibration of the belt conveyor by simulation and propose a control strategy to limit the vibration. The proposed approach and control strategy were verified by several experimental researches and cases. The proposed approach provides improved accuracy for dynamic design of belt conveyors.
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Galin, I. A. « Verification of Continuous Multichannel Belt-Conveyor Weighers ». Measurement Techniques 59, no 1 (avril 2016) : 34–40. http://dx.doi.org/10.1007/s11018-016-0912-6.

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9

SOARES, V. M., J. G. PEREIRA, C. M. ZANETTE, L. A. NERO, J. P. A. N. PINTO, V. C. BARCELLOS et L. S. BERSOT. « Cleaning Conveyor Belts in the Chicken-Cutting Area of a Poultry Processing Plant with 45°C Water ». Journal of Food Protection 77, no 3 (1 mars 2014) : 496–98. http://dx.doi.org/10.4315/0362-028x.jfp-13-340.

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Conveyor belts are widely used in food handling areas, especially in poultry processing plants. Because they are in direct contact with food and it is a requirement of the Brazilian health authority, conveyor belts are required to be continuously cleaned with hot water under pressure. The use of water in this procedure has been questioned based on the hypothesis that water may further disseminate microorganisms but not effectively reduce the organic material on the surface. Moreover, reducing the use of water in processing may contribute to a reduction in costs and emission of effluents. However, no consistent evidence in support of removing water during conveyor belt cleaning has been reported. Therefore, the objective of the present study was to compare the bacterial counts on conveyor belts that were or were not continuously cleaned with hot water under pressure. Superficial samples from conveyor belts (cleaned or not cleaned) were collected at three different times during operation (T1, after the preoperational cleaning [5 a.m.]; T2, after the first work shift [4 p.m.]; and T3, after the second work shift [1:30 a.m.]) in a poultry meat processing facility, and the samples were subjected to mesophilic and enterobacterial counts. For Enterobacteriaceae, no significant differences were observed between the conveyor belts, independent of the time of sampling or the cleaning process. No significant differences were observed between the counts of mesophilic bacteria at the distinct times of sampling on the conveyor belt that had not been subjected to continuous cleaning with water at 45°C. When comparing similar periods of sampling, no significant differences were observed between the mesophilic counts obtained from the conveyor belts that were or were not subjected to continuous cleaning with water at 45°C. Continuous cleaning with water did not significantly reduce microorganism counts, suggesting the possibility of discarding this procedure in chicken processing.
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Strobel, Jens, Jens Sumpf, Ralf Bartsch et Markus Golder. « Real-time Measuring and Monitoring of Relevant Parameters in Complex Chain Conveyor Systems ». innoTRAC Journal 1 (3 décembre 2020) : 64–73. http://dx.doi.org/10.14464/innotrac.v1i0.452.

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In continuous conveyor systems with circulating traction mechanisms, e.g. chains, the kinematic-dynamic movement behaviour of the traction mechanism is of great importance. Force and vibration analyses can be used to detect overloads and other irregularities in the conveying process. This helps to prevent damage that can lead to a complete failure of the conveyor system. Such analyses are particularly interesting for slide chain conveyors with plastic chains, as these react very sensitively to system overload due to limited thermal and mechanical characteristics as well as often a complex track layout. This article shows how accelerations and tractive forces can be continuously recorded, transmitted and analysed by sensors integrated into the chain links. In addition to the discussion of test results, potential applications of the measuring chain are shown.
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11

Marasova, Daniela, Michal Cehlar, Lubomir Ambrisko, Vladimir Taraba et Nikola Staricna. « Innovations in Monitoring Conveyor Belts with Implemented RFID Technology ». E3S Web of Conferences 105 (2019) : 03002. http://dx.doi.org/10.1051/e3sconf/201910503002.

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Belt conveyors are used as efficient conveyance systems for the continuous transportation of materials. However, they are also used for a wide range of applications in the transport of ores and non-metallic materials. The Radio Frequency Identification (RFID) system represents a key technology in many industries due to its ability of automatic data processing. The purpose of the present article is to discuss the implementation of RFID tags into fabric conveyor belts as carriers of the information on conveyor belts (ozone-induced ageing or accelerated thermal ageing, damage to cover layers and the carcass, and ignition). During the monitoring, it is important to record conveyor belt failures and damage causes, as well as other problems arising during the use of belt conveyors. The article presents the results of the experimental research on RFID tags and the analysis of their behaviour in accelerated thermal ageing. This facilitates simulating the conditions of hot vulcanisation of conveyor belts, especially when splicing (as well as producing) them, and of ozone-induced ageing of conveyor belts. The output of the article is the verification of the possibility to implement the RFID technology in the transport of mineral materials by belt conveyance systems in real operations.
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12

Zhang, Wei Feng, Chuan Sheng Wang et Fu Xia Zhang. « The Performance Analysis and Research about a Type of New Tubular Belt ». Key Engineering Materials 561 (juillet 2013) : 255–59. http://dx.doi.org/10.4028/www.scientific.net/kem.561.255.

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Abstract. The tubular belt conveyor system is one of the most widely-used deferent manners in bulk material. It is a relatively important continuous deferent manners in modern intensive production, widely applied in metallurgy, coal, building materials and other different industries. The belt conveyor has advantages in long distance convey, large conveying volume, high efficiency, with simple structure. Now with the development of the machinery manufacturing technology, rubber industry and the requirements of the environmental aspects, the new type tubular belt type conveyor has obtained unanimous approval, and possessed vast vista in application and use value
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13

Kawalec, Witold, Robert Król et Natalia Suchorab. « Regenerative Belt Conveyor versus Haul Truck-Based Transport : Polish Open-Pit Mines Facing Sustainable Development Challenges ». Sustainability 12, no 21 (5 novembre 2020) : 9215. http://dx.doi.org/10.3390/su12219215.

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The mining industry is facing sustainable development challenges, among which the energy efficiency issues seem to be of major importance. As transport of the mined ore is considered as one of the most energy intensive operations, the improvement of its energy efficiency is a key indicator in terms of sustainable actions taken by mining companies. In open-pit mines, the material handling operations are mostly performed with trucks. Their electrified version—truck trolley systems—surpass diesel trucks’ efficiency while comparing the increased production capacity and the reduction of maintenance cost and fuel consumption. The paper analyzes the opportunities and benefits of the replacement of an ore transport system based on hauling trucks with a regenerative belt conveying in an open-pit mine. Presented case study has been analyzed from energy consumption and environmental impact reduction perspectives. Generally, conception of a regenerative conveyor is based on recuperation of energy or continuous braking needed while a conveyor is running downhill. Energy generated during the braking process (converted from the potential gravitational energy of the conveyed material) is fed back to the electrical grid. Then the regenerative conveyor can be considered as a machine that mines energy as an additional by-product of an exploited deposit. It was shown that difference in transportation cost between haul trucks and energy efficient regenerative conveyors is around 95%. The paper points the conditioning elements to allow the implementation of a regenerative belt conveyor system.
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TASAKI, Ryosuke, Takanori YAMAZAKI, Hideo OHNISHI, Masaaki KOBAYASHI et Shigeru KUROSU. « Continuous Weighing by Multi-stage Conveyor Belt Scale ». Transactions of the Society of Instrument and Control Engineers 39, no 11 (2003) : 1022–28. http://dx.doi.org/10.9746/sicetr1965.39.1022.

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Zhang, Ai Dong, Ri Cheng Xu, Yun Meng et Xun Fan. « Experimental Research on Water Cushion Belt Conveyor ». Applied Mechanics and Materials 431 (octobre 2013) : 88–92. http://dx.doi.org/10.4028/www.scientific.net/amm.431.88.

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Water cushion belt conveyor is a new type of continuous conveyor which develops from belt conveyor and air cushion belt conveyor .By experimental research on water cushion belt conveyor ,we can observe the condition of water cushion and accomplish the date acquisition of water cushion pressure .Analyzing the pressure ,we can get influencing factors of water cushion pressure and verify the feasibility of industrial application of water cushion belt conveyor .Combining theory study with experimental study ,provide theoretical basis and guide for the further progress of water cushion belt conveyor .
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TASAKI, Ryosuke, Takanori YAMAZAKI, Hideo OHNISHI, Masaaki KOBAYASHI et Shigeru KUROSU. « Improved Continuous Weighing by Multi-stage Conveyor Belt Scale ». Transactions of the Society of Instrument and Control Engineers 40, no 12 (2004) : 1205–10. http://dx.doi.org/10.9746/sicetr1965.40.1205.

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YAMADA, Yasuyuki, Shun YOSHIHAMA, Akihiro IWASAKI, Kyota ASHIGAKI, Kotaro MATUMOTO, Hiroto HABU et Taro NAKAMURA. « Peristaltic Continuous Mixing Conveyor for Composite Propellant Slurry Mixing ». Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2017 (2017) : 2P2—A07. http://dx.doi.org/10.1299/jsmermd.2017.2p2-a07.

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YAMADA, Yasuyuki, Kyota ASHIGAKI, Akihiro IWASAKI, Daiki HAGIWARA, Kai NEGISHI, Shun YOSHIHAMA, Kotaro MATUMOTO, Katsuhiko NOZOE, Hiroto HABU et Taro NAKAMURA. « Peristaltic Continuous Mixing Conveyor for Composite Propellant Slurry Mixing ». Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2018 (2018) : 2A2—A07. http://dx.doi.org/10.1299/jsmermd.2018.2a2-a07.

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19

Keppler, S., S. Bakalis, C. E. Leadley et P. J. Fryer. « Processing of barley grains in a continuous vibrating conveyor ». Journal of Food Engineering 187 (octobre 2016) : 114–23. http://dx.doi.org/10.1016/j.jfoodeng.2016.04.010.

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TOLVANEN, RIINA, JANNE LUNDÉN, ARI HÖRMAN et HANNU KORKEALA. « Pilot-Scale Continuous Ultrasonic Cleaning Equipment Reduces Listeria monocytogenes Levels on Conveyor Belts ». Journal of Food Protection 72, no 2 (1 février 2009) : 408–11. http://dx.doi.org/10.4315/0362-028x-72.2.408.

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Ultrasonic cleaning of a conveyor belt was studied by building a pilot-scale conveyor with an ultrasonic cleaning bath. A piece of the stainless steel conveyor belt was contaminated with meat-based soil and Listeria monocytogenes strains (V1, V3, and B9) and incubated for 72 h to allow bacteria to attach to the conveyor belt surfaces. The effect of ultrasound with a potassium hydroxide–based cleaning detergent was determined by using the cleaning bath at 45 and 50°C for 30 s with and without ultrasound. The detachment of L. monocytogenes from the conveyor belt caused by the ultrasonic treatment was significantly greater at 45°C (independent samples t test, P < 0.001) and at 50°C (independent samples t test, P = 0.04) than without ultrasound. Ultrasonic cleaning efficiency was tested with different cleaning durations (10, 15, 20, and 30 s) and temperatures (30, 45, and 50°C). The differences in the log reduction between cleaning treatments were analyzed by analysis of variance with Tamhane's T2 posthoc test using SPSS (Chicago, IL). The lengthening of the treatment time from 10 to 30 s did not significantly increase the detachment of L. monocytogenes (ANOVA 0.633). At 30°C and at the longest time tested (30 s), the treatment reduced L. monocytogenes counts by only 2.68 log units. However, an increase in temperature from 30 to 50°C improved the effect of the ultrasonic treatment significantly (P < 0.01). Ultrasonic cleaning for 10 s at 50°C reduced L. monocytogenes counts by more than 5 log units. These results indicate that ultrasonic cleaning of a conveyor belt is effective even with short treatment times.
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Gładysiewicz, Lech, et Martyna Konieczna. « Theoretical analysis of the impact of belt speed on indentation rolling resistance ». E3S Web of Conferences 71 (2018) : 00004. http://dx.doi.org/10.1051/e3sconf/20187100004.

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Belt conveyors, having high reliability and efficiency, are the main means of continuous transportation both in underground and in open-cast mining. Despite their numerous advantages, however, belt conveyors are expensive in maintenance. Therefore, improvements in the field of belt conveyor transportation largely focus on methods for lowering their power consumption. The energy consumption level of a belt conveyor depends on the motion resistances which occur during its operation. In the case of conveyors having lengths greater than 80 m, main resistances are the dominant component of motion resistances, and up to 60% of main resistances may be accounted for by the rolling resistances of the belt on idlers. Motion resistances, including rolling resistances, have long remained an object of research. Extensive laboratory tests and increasingly detailed theoretical models allow a better insight into the phenomena involved in the movement of the belt on the conveyor. Different research results place different weight on the influence of individual parameters (such as unit load or phase lag angle) on belt rolling resistance. The greatest inconsistencies, however, are observed in the analyses of belt speed impact, which is occasionally not even included in some models. This paper discusses the known and commonly used methods for determining the rolling resistances of the belt on idlers. It also proposes a new solution, which employs the analysis of strain variation in the belt for successive load cycles to determine whether belt speed has a direct influence on the value of rolling resistance.
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Livingston, Peter, et Donald Slack. « Pilot-Scale Continuous Conveyor Diffusion Extraction System for Sweet Sorghum ». Advanced Materials Research 931-932 (mai 2014) : 1534–38. http://dx.doi.org/10.4028/www.scientific.net/amr.931-932.1534.

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The purpose of this paper is to present preliminary results from testing a pilot-scale sweet sorghum diffusion extractor that was designed to extract the juice from sweet sorghum stalks while simultaneously filtrating the extracted juice. The ultimate use of the juice is fuel grade ethanol. In essence, the system is a large coffee percolator that works by running shredded sorghum through a conveyor with recirculating hot water running over the crop to extract the sugar through diffusion. The current system spans 10 m in length, is 1m wide, and 0.6 m high. The sorghum is harvested with a forage chopper, and discharged at a constant rate into the trough. The sorghum moves at a rate of 0.2 m per minute, so the sorghum is in the diffusion system for 20 minutes. The water/juice is sprayed over the chopped stalks and is kept at a target temperature of 660C. A roller fixture located at the end of the trough helps squeeze out some of the remaining juice. The pilot scale sweet sorghum diffusion system continuously extracts the sugar at a rate of 3 metric tons (mt) of sorghum an hour with a minimum sugar extraction of 60%. During our pilot testing phase we were able to process 0.65 mt of material per hour with a resultant brix of 6%. The system was halted several times to adjust the heating system, so we are confident that with further testing we can process at least 3 mt per hour of material. The conversion from the conventional harvesting and roller press of the sorghum stalk to this method could resulted in a 66% reduction in energy to harvest and extract the juice.
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YAMAZAKI, Takanori, Hideo OHNISHI, Masaaki KOBAYASHI et Shigeru KUROSU. « Continuous Mass Measurement in Conveyor Belt Scales using FIR Filter ». Proceedings of Conference of Kanto Branch 2003.9 (2003) : 387–88. http://dx.doi.org/10.1299/jsmekanto.2003.9.387.

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Chavoshisani, Reza, et Omid Hashemipour. « Low Power Current Conveyor Based Continuous Time Sigma Delta Modulator ». Journal of Low Power Electronics 13, no 2 (1 juin 2017) : 249–54. http://dx.doi.org/10.1166/jolpe.2017.1481.

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Raoufat, M. H., et B. Clarke. « Design and Development of a Packed-bed Continuous Pneumatic Conveyor ». Journal of Agricultural Engineering Research 71, no 4 (décembre 1998) : 363–71. http://dx.doi.org/10.1006/jaer.1998.0335.

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Feng, Yu, Miaotian Zhang, Guoping Li et Guoying Meng. « Dynamic characteristic analysis and startup optimization design of an intermediate drive belt conveyor with non-uniform load ». Science Progress 103, no 1 (10 octobre 2019) : 003685041988108. http://dx.doi.org/10.1177/0036850419881089.

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As an important transportation equipment, belt conveyor plays an important role in underground coal mine production and is an indispensable component. In this article, taking the intermediate drive belt conveyor of Shanxi Tongmei Group Tongxin Mine as an example, the continuous dynamic method is adopted to comprehensively consider the non-uniform load distribution of the belt conveyor, and mathematical modeling of the intermediate drive belt conveyor is performed. The dynamic characteristics of the conveyor belt are analyzed. The MATLAB software is used to analyze the change of the conveyor belt tension under different starting accelerations. Based on the analysis results, the starting acceleration is optimized, and the new combined parabolic acceleration curve presented here is more suitable for the actual working condition of the belt conveyor. In this article, the startup timing of the head and middle motors of the belt conveyor is also discussed in depth. The start timing design of the belt conveyor is described, which provides a reference for the design of the belt conveyor with an intermediate drive.
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Guo, Yong Cun, Zhu Fen Wang et Kun Hu. « Discussing the Green Design for Belt Conveyor ». Advanced Materials Research 156-157 (octobre 2010) : 1266–70. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.1266.

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Green design is a new design method which is proposed under the situation of energy shortage and environmental pollution. Based on the theoretical foundation of green design, it can be done to design the conveyor belt that is as one of the most important continuous transport machinery. And it can be used to satisfy the request to save natural resources and protect the environment in the meet the premise of work requirements.
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Yuan, Xing Qi, Shuang Yan Yang et Quan Yun Niu. « Analysis and Design of the Roller for Belt Conveyor Based on ANSYS ». Advanced Materials Research 1027 (octobre 2014) : 315–19. http://dx.doi.org/10.4028/www.scientific.net/amr.1027.315.

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With the fast development in continuous conveyor technology, the belt conveyor to be more widely applied, the belt conveyor technology is gradually refined, and has made a number of achievements. Drum as a belt conveyor drive components, attracted the attention of the relevant technical staff. To ensure the belt conveyor system, the optimizing design of the drum quality and the strengthen use of the drum performance have an important guiding significance to the safety and reliability as a whole. With the help of ANSYS software, finite element analysis, the optimal design results analysis showed that the effect of optimal design to achieve the purpose of has a certain guiding significance for optimizing the structure of actual production. Key words: Belt conveyor; drum; transmission parts; ANSYS; the optimization design
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Nguyen, Thien Binh, Thanh Son Le, Thanh Nam Nguyen et Ngoc Thanh The Vu. « Design of Rotoformer Mechanism and Cooling Steel - Conveyor in Sulfur Granulation Systems ». Key Engineering Materials 656-657 (juillet 2015) : 456–60. http://dx.doi.org/10.4028/www.scientific.net/kem.656-657.456.

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The sulfur granulation roller (rotoformer) mechanism and cooling steel conveyor is important clusters in sulfur granulation system. This paper presents method to design rotoformer, apply goal: create a continuous pressure for a regular granulation on steel conveyor. There are also mechanism that granulates and maintains temperature so that sulfur is not stuck and not solidify in the supplying pipes. Moreover, this paper shows the solution to cool the steel conveyor, filter system has temperature sensors which ensure the decreasing of temperature over the length of steel conveyor. This will help the granulation of sulfur, formed sulfur will has right size and shape.
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Hadi, Syamsul, Alfarizi Al Azis, Vinan Viyus, Etik Puspitasari, Ahmad Hanif Firdaus et Andri Setiawan. « Planning for Maintenance and Repair of Continuous Ship Unloader Using the IRRO Method ». Logic : Jurnal Rancang Bangun dan Teknologi 21, no 1 (30 mars 2021) : 52–63. http://dx.doi.org/10.31940/logic.v21i1.2383.

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The problem faced is damage, especially to the screw conveyor from the Continuous Ship Unloader (CSU) as a dry bulk material transfer equipment (phosphate rock) which is taken from the ship's hold which is flowed by a screw conveyor followed by the belt conveyor to the material warehouse to be processed into a type of fertilizer. The purpose of planning is to obtain a schedule and estimated cost of maintenance and repair of CSU for the period 2022 to 2025, and to obtain the ratio of maintenance-repair costs to the profit of the machine. Planning methods uses the IRRO (Inspection, Replace, Repair, and Overhoul) method include data collection of machine maintenance history and component breakdowns, checking CSU specifications, making a list of component life predictions and component prices, predicting costs and duration of component dissasembly, screw conveyor repair, maintenance and repair scheduling, and maintenance and repair cost estimates. The real results of planning in the form of a maintenance and repair schedule for the period of 2022 to 2025; maintenance and repair costs respectively for the years 2022 to 2025 are IDR 136,873,000; IDR 335,986,000; IDR 160,687,000; and IDR 464,733,000; and the ratio between maintenance costs to profit for the years 2022 to 2025 is 0.51, 1.22, 0.57, and 1.63 which means the machine is still fit for use without the need for refurbishment because it is still prospective.
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Shen, Xiao, Qun Wang, Zhou Yu Fu, Shuo Wei Bai et Zhao Yang Sun. « Dynamic States Specific Analysis for Belt Conveyor Based on FDM ». Applied Mechanics and Materials 278-280 (janvier 2013) : 27–30. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.27.

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There are two common research methods on the dynamic states model of belt conveyor in China at present. The mathematical model is built by finite element method then it is solved by numerical method. And the continuous model is built when the belt is treated as elastic body then it is solved by mathematical method. This paper puts forward the establishment of continuous model, the model is solved by FDM and the simulation results are given.
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Tolkachev, E. N. « Changing the technical characteristics of conveyors with a suspended belt in case of failures in the power supply system of drive suspensions ». Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta 7, no 3 (25 septembre 2021) : 280–95. http://dx.doi.org/10.22281/2413-9920-2021-07-03-280-295.

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The results of the research presented in the article relate to a fundamentally new type of continuous transport machines-conveyors with a suspended load-carrying belt and a distributed drive. The main advantages of which are due to the features of the kinematic scheme, in which the load-bearing conveyor belt is held by the sides by means of roller suspensions on rolling guides closed along the route and does not interact with its base with supporting supports, and the drive is implemented according to the distributed scheme by the equipment of individual suspensions with individual motor-gear drives. A feature of such a kinematic scheme is the nature of the failures associated with the operation of highly loaded drive suspensions, the influence of which affects the main technical characteristics of the conveyor with a sufficiently increased number. The paper presents a mathematical model designed to calculate the dynamic characteristics of a conveyor with a suspended belt and a distributed drive when the types of failures characteristic of this conveyor design occur, associated with a break in the supply electrical circuit of the motor-gear drive of the suspensions. Based on the developed mathematical model for the reference design of a conveyor with a suspended belt and a distributed drive, a series of numerical calculations of dynamic characteristics in the event of failures of drive suspensions is performed. The obtained results allowed us to establish that with a reduction in the number of groups of consistently failed drive suspensions located with an equal step along the route, the technical characteristics of the conveyor deteriorate: the speed of movement of the load-bearing belt and the total power of the drives are reduced, and the longitudinal tensile stresses in the belt are increased. With an increase in the number of consistently failed drive suspensions within one group, the power and speed of the conveyor decrease non-linearly, and the longitudinal stresses in the conveyor belt increase linearly. In general, the results of calculations of the technical characteristics of the reference idealized design demonstrated the possibility of the conveyor operation in case of failure of 90% of the drive suspensions. The actual performance indicators are determined by the technical characteristics of the used gear motor drives.
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Zhu, Jing Fei, Shao Jie Xu et Yong Wei Li. « The System Design of Granular Bulk Materials Continuous Conveyor Weighing Measurement ». Applied Mechanics and Materials 345 (août 2013) : 145–49. http://dx.doi.org/10.4028/www.scientific.net/amm.345.145.

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For continuous transportation of granular bulk materials measurement and weighing is important link in industrial and agricultural production, warehousing and product flows. Improve said heavy of precision and speed is the key of dynamic measurement, and traditional for the continuous delivery of materials weighing system can not meet the requirements of quickly weighed and measured accurately, while sometimes variable, and nonlinear and random, factors in actual process in the of interference, in order to overcome these factors on continuous conveying material measurement system of effect, this article based on RBF Neural network model for foundation made a dynamic clustering algorithm optimization strategy.By means algorithm calculated the center of the base function, further extended RBF Neural network constants from hidden layer to output layer , then using least-squares method calculates the weight matrix to determine the final network structure and main parameters. This article on measurement of dynamic process has simulation test research, and BP neural network for effect comparison, simulation results indicates that, based on RBF of neural network on continuous conveying bulk material measurement control system is more effective, and weighing accuracy and speed is improved, in order to achieve the continuous delivery of materials weighing process optimization control, and at the same time provides an effective way to solve the existing problems of this type of system.
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Zhao, Peng Ju, et Yu Zhu. « Design and Application Analysis of Coal Mine Belt Conveyor Automation System ». Advanced Materials Research 1044-1045 (octobre 2014) : 759–62. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.759.

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In recent years, with the continuous development of our society and economy, coal mining is also expanding the scale, and belt conveyor is widely used in coal mine production as a belt conveyor device. However, in practice, due to the low mass of reactive power, large loss of reactive circulation and large starting current, belt conveyor threaten the safety of coal production in addition to bring enterprises the economic losses. In this context, the realization of coal belt conveyor automation system design can not only reduce maintenance costs, extend working life, but also ensure life and property safety of mine workers, and ultimately improve the social and economic benefits of enterprises.
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Mien, Trinh Luong. « A Fuzzy PID-Based Cascade Control for Continuous Material Weighing Conveyor ». Advances in Science, Technology and Engineering Systems Journal 4, no 2 (2019) : 112–18. http://dx.doi.org/10.25046/aj040215.

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Galin, Igor Alexander. « Test Methods of Increasing Precision Verification of Continuous Conveyor-Type Weighers ». International Review of Mechanical Engineering (IREME) 11, no 11 (30 novembre 2017) : 862. http://dx.doi.org/10.15866/ireme.v11i11.12237.

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Cheung, J., et H. Rabia. « Transient heat flow from the cut coal on a continuous conveyor ». Mining Science and Technology 8, no 2 (mars 1989) : 169–75. http://dx.doi.org/10.1016/s0167-9031(89)90577-x.

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YAMADA, Yasuyuki, Shun YOSHIHAMA, Akihiro IWASAKI, Kyota ASHIGAKI, Kotaro MATUMOTO, Hiroto HABU et Taro NAKAMURA. « Study on peristaltic continuous mixing conveyor for composite propellant slurry mixing ». Transactions of the JSME (in Japanese) 83, no 850 (2017) : 16–00576. http://dx.doi.org/10.1299/transjsme.16-00576.

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Tasaki, Ryosuke, Takanori Yamazaki, Hideo Ohnishi, Masaaki Kobayashi et Shigeru Kurosu. « Continuous weighing on a multi-stage conveyor belt with FIR filter ». Measurement 40, no 7-8 (août 2007) : 791–96. http://dx.doi.org/10.1016/j.measurement.2006.05.010.

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Nazockdast, H., F. Goharpey et B. Dabir. « Mathematical modeling and experimental study of conveyor belt continuous curing process ». Journal of Applied Polymer Science 77, no 11 (2000) : 2448–54. http://dx.doi.org/10.1002/1097-4628(20000912)77:11<2448 ::aid-app13>3.0.co;2-8.

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Tokarchuk, Oleksii, et Yaropud Vіtalіy. « DEPENDENCE BETWEEN OPERATING REQUIREMENTS AND PARAMETERS OF RATIONAL CHOICE OF THE VIBRATION CONVEYOR DESIGN ». Vibrations in engineering and technology, no 3(94) (26 novembre 2019) : 45–51. http://dx.doi.org/10.37128/2306-8744-2019-3-6.

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An analysis is made of the dependence between the individual experimental requirements and the parameters of the vibratory conveyor. The main problem in the creation and justification of the parameters of new designs of continuous vibratory conveyors that provide the expansion of technological capabilities is the reduction of energy resources with improved conditions for their operation, as well as the development of methods for designing their working elements is of great technical importance. The process of moving cargo by a vibrating conveyor is accompanied by complex phenomena in the material layer. Theoretical studies relating to the laws of motion of a single material point can be applied in calculating the entire flow only when taking into account the specific features of the cargo, its physical and mechanical properties and the influence of air resistance. During abrupt movement, especially in closed gutters and pipes, under the load and above it, rarefaction and high pressure zones are formed, this phenomenon is observed to a greater extent during the transportation of dusty loads. The basic arrangement of the vibratory conveyor depends mainly on the type of drive: eccentric, aspiration, electromagnetic. The influence of the operating mode of the conveyor, as well as the amplitude and frequency of oscillation on the speed of transportation of grain; dependence of plant performance from these parameters, is established. Experimental graphs of the dependence of the speed of transporting grain on the width of the trough and amplitude, are presented and also graphs are built showing the performance of the vibratory conveyor on the complex function of a number of parameters: amplitude, vibration frequency, etc.
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Nguyen, Binh Thien, Son Thanh Le et Nam Thanh Nguyen. « Design of Roller mechanism and Conveyor in Sulfur granulation systems ». Science and Technology Development Journal 17, no 1 (31 mars 2014) : 14–20. http://dx.doi.org/10.32508/stdj.v17i1.1278.

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Roller mechanism and conveyor are important components in sulfur granulation system. This paper presents the method to design roller mechanism to apply two goals: create a continuous pressure for a regular granulation on steel conveyor. There are also granulation mechanism and maintain temperature not to stuck and solidify of sulfur in the supplying pile. Moreover, this paper shows the solution to design steel conveyor and filtering system including with temperature sensor which ensure the decreasing of temperature over the length of steel bell. This will help the granulation of sulfur with the right size and shape.
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Zhi, Ai Di, et Sheng Li Jiang. « Development of CAD Systems for Screw Blades ». Advanced Materials Research 308-310 (août 2011) : 9–14. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.9.

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Screw conveyors deliver materials in desired quantities in a steady and continuous manner, and are widely used in factories and mining. The design of large multi-blade screw conveyor involves complex calculations and large repeated workload, and is poor in accuracy and efficiency. With modular design as the guideline, using object-oriented programming language VB6.0 as the developing tool, and based on the platform of AutoCAD, this article discusses the development of a user-friendly CAD system that allows arbitrary division of the outer vortex. Practice has proven that this simple and pragmatic system largely improves the design efficiency and precision.
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44

Carrasquillo, Vernnaliz, Thomas J. Armstrong et S. Jack Hu. « Mixed-Model Assembly Lines and Their Effect on Worker Posture and Recovery Time ». Proceedings of the Human Factors and Ergonomics Society Annual Meeting 61, no 1 (septembre 2017) : 968. http://dx.doi.org/10.1177/1541931213601723.

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Aim: The aim of this study is to describe the relationship between cycle-to-cycle task variations in mixed-model assembly lines and workers’ exposure to poor posture and insufficient recovery time and provide guidelines for mixed-model assembly line (MMAL) design. Background: In the US, 17.6 out of 100,000 manufacturing workers suffer musculoskeletal injuries while conducting tasks in assembly lines which may be paced (e.g. continuously moving) or self-paced (e.g. asynchronous indexing). MMALs produce multiple products in the same line. Pacing must be carefully considered to achieve productivity targets while providing workers sufficient time to complete the tasks and recover. The effect of pacing on worker fatigue and exertions is not well understood. In MMALs, the complexity of completing multiple work methods may increase exposure to these risk factors. These concerns also affect hospital kitchens. While kitchen workers don’t have standardized work cycles, the work tasks (e.g. get, move, put) resemble the cyclic nature of manufacturing plants. Studies have been conducted to describe the effect of cycle-to-cycle task variations on worker posture and recovery time in MMALs (Carrasquillo, Armstrong, and Hu 2011, 2016, 2017). Methods: Three studies were conducted: (1) field observation of continuous moving assembly line - hospital kitchen, continuous moving conveyor; (2) conveyor type, product mix/sequence laboratory experiment - simulated assembly task conducted under 9 conveyor and product mix/sequence configurations; (3) field observation of on demand, self-paced assembly line with varying demand - hospital kitchen where patients placed orders at any time. Workers were video recorded and worker posture and recovery time were assessed. Posture tracking was used in laboratory study (2). Results: The self-paced assembly lines (asynchronous indexing, and manual), provided workers control over their work pace. They reached within the reach envelop more frequently than in the paced, continuous moving conveyor (43% vs. 86% –99%). The workers on the self-paced assembly line had the greatest average recovery time (31.8%), the worker on the continuous moving conveyor had 9.5% and the subjects on the asynchronous indexing conveyor had 0.7% recovery time. Discussion and conclusions: In study (1) increases in variations increased the frequency of workers reaching outside the reach envelope and reduced recovery time. In Study (2), the self-paced, asynchronous indexing mixed-model assembly line was the most effective configuration in reducing the frequency of reaching unnecessarily to complete the job. However, subjects didn’t reduce the pace to recover; instead, they worked continuously. The workers’ pace in the Study (3) assembly line was constrained by the process time. In it, workers, chose to reach outside the reach envelop 14% of the time; less frequently than in Study (1). The process time provided time for recovery. It exceeded 10%, more than in any of the other assembly line configurations. These findings demonstrate that as work variations increase, so does the frequency of reaching while the recovery time is. Self-pacing reduced but did not eliminate awkward postures. Participants reached ahead and completed the assigned tasks before the work objects were within the reach envelope. Ensuring that a minimum work time is maintained for each product type is essential to providing workers with sufficient time for recovery.
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Song, Chao Sheng, Qi Ming Huang, Jie Xu et Zhan Gao. « The Mechanism Analysis of Horizontal Vibrated Conveyor with Inclination ». Applied Mechanics and Materials 215-216 (novembre 2012) : 1093–97. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.1093.

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Considering the transition effect of static friction to dynamic friction, a two degree-of- freedoms vibration model of a new type of horizontal vibrated conveyor with inclination which can be used for continuous charging of electric arc furnace is formulated using d'Alembert principle. Based on the proposed vibration model, a program is wrote and the transmit mechanism is investigated. Computational results reveal numerous interesting conveying characteristics which can be used to forecast and control the vibration of the scrap and the conveyor.
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Banerjee, Sumit. « Performance evaluation of continuous miner based underground mine operation system : An OEE based approach ». New Trends in Production Engineering 2, no 1 (1 octobre 2019) : 596–603. http://dx.doi.org/10.2478/ntpe-2019-0065.

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Abstract CM is a globally renowned machine, designed to work as a mass production technology for underground coal. Different major coal producers across the globe are using this technology for decades to produce underground coal efficiently. India is also one of the major players globally in the arena of coal production and adopted this cutting edge technology since last decade by implementing at. few of the selective underground coal mining projects. Performance of CM technology is influenced by the geo-mining condition, fleets of other ancillary units and reliability of subsystems while implementation of this system depends largely on the extent of reserve. These aspects generate a scope of large scale research and development in this field. Overall Equipment Effectiveness (OEE) is the parameter to benchmark the equipment performance globally. OEE is the product of equipment availability, performance and product quality. This mining machine based paper focuses on the Overall Equipment Effectiveness (OEE) of the complete CM based operation to identify the vulnerable systems, which helps to design proper preventive maintenance programme. The CM based system is divided into few subsystems, such as; electrical, cutter, gathering arrangement, traction, hydraulic, chassis, feeder breaker, shuttle car, CM conveyor and out-bye conveyor. The downtime data used for this analysis is collected from an underground coal mine situated in the central part of India, belongs to one leading coal producing company of the country. From analysis it was found that, electrical systems and conveyors are among most vulnerable systems and deserves more care during maintenance. On the basis of these results recommendations are made to redesign the Preventive Maintenance Programme, in order to avoid the lower availability as well as lower OEE.
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Ji, Jianhua, Changyun Miao et Xianguo Li. « Cosine-Trapezoidal Soft-Starting Control Strategy for a Belt Conveyor ». Mathematical Problems in Engineering 2019 (24 mars 2019) : 1–8. http://dx.doi.org/10.1155/2019/8164247.

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To improve the soft-starting performance of a belt conveyor, a cosine-trapezoidal soft-starting control strategy is proposed. With this strategy, the speed curve for soft-starting is S-shaped, continuous, and smooth. The acceleration and jerk are also continuous and smooth without discontinuities. The time-interval ratio of the horizontal and cosine curves can be changed via a single parameter setting, so that the strategy can be modified to meet different practical needs. In this paper, the soft-starting control strategy of cosine trapezoid is analyzed and simulated based on current international and domestic standards. The results show that compared with the classical soft-starting control strategy, the cosine-trapezoidal soft-starting control strategy enables the belt conveyor to start at its highest efficiency. Moreover, the energy savings are obvious, the safety performance is good, and the controllable performance is excellent.
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Hatch, Andrew C., Tathagata Ray, Kelly Lintecum et Cody Youngbull. « Continuous flow real-time PCR device using multi-channel fluorescence excitation and detection ». Lab Chip 14, no 3 (2014) : 562–68. http://dx.doi.org/10.1039/c3lc51236c.

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We have developed a ‘conveyor belt’ analog for real-time quantitative polymerase chain reaction (qPCR) in a continuous flow thermocycler. The device integrates droplet emulsion technology with LED and fiber optic fluorescence excitation in conjunction with a continuous flow thermal cycler to achieve real-time fluorescence detection.
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Moldabayev, S. K., Y. Aben, E. A. Kasymbayev et N. O. Sarybayev. « Complete cyclical-and-continuous technology equipment for intermodal vehicle-conveyor-rail transport ». Mining Informational and analytical bulletin 7 (2019) : 158–73. http://dx.doi.org/10.25018/0236-1493-2019-07-0-158-173.

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최세경, 한지영 et 손병석. « Effect analysis of Vertical Conveyor for Multi-level Continuous Movement via simulation ». Journal of Shipping and Logistics 29, no 2 (juin 2013) : 375–95. http://dx.doi.org/10.37059/tjosal.2013.29.2.375.

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