Rozprawy doktorskie na temat „Gantry Cranes”
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Costa, Giuseppe Electrical Engineering & Telecommunications Faculty of Engineering UNSW. "Robust Control For Gantry Cranes". Awarded by:University of New South Wales. Electrical Engineering and Telecommunications, 1999. http://handle.unsw.edu.au/1959.4/17609.
Pełny tekst źródłaOmar, Hanafy M. "Control of Gantry and Tower Cranes". Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/26044.
Pełny tekst źródłaPh. D.
Morrish, Lena. "Modelling of spreader hoist systems in mobile gantry cranes". Thesis, University of Edinburgh, 1996. http://hdl.handle.net/1842/12689.
Pełny tekst źródłaHaas, Trevor Neville. "Numerical (FEA) evaluation of crane end buffer impact forces". Thesis, Lilnk to the online version, 2007. http://hdl.handle.net/10019/633.
Pełny tekst źródłaMcKenzie, Kim Anne. "The numerical simulation of wheel loads on an electric overhead travelling crane". Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/681.
Pełny tekst źródłaMcNary, Bradley S. "Real-time dispatching of rubber tired gantry cranes in container terminals". Thesis, Monterey, Calif. : Naval Postgraduate School, 2008. http://bosun.nps.edu/uhtbin/hyperion-image.exe/08Mar%5FMcNary.pdf.
Pełny tekst źródłaThesis Advisor(s): Royset, Johannes O. "March 2008." Description based on title screen as viewed on May 5, 2008. Includes bibliographical references (p. 39-40). Also available in print.
Zey, Lennart [Verfasser]. "Interference aware scheduling of gantry cranes in container yards / Lennart Zey". Wuppertal : Universitätsbibliothek Wuppertal, 2019. http://d-nb.info/1188422618/34.
Pełny tekst źródłaNayfeh, Nader Ali. "Adaptation of Delayed Position Feedback to the Reduction of Sway of Container Cranes". Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/9698.
Pełny tekst źródłaMaster of Science
Al-Mousa, Amjed A. "Control of Rotary Cranes Using Fuzzy Logic and Time-Delayed Position Feedback Control". Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/36024.
Pełny tekst źródłaMaster of Science
De, Waal Arthur William. "Development of a crane load software application for electric driven overhead travelling bridge cranes in accordance with SANS 10160-6:2010". Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6622.
Pełny tekst źródłaENGLISH ABSTRACT: Electric driven overhead travelling bridge cranes (EOHTC) form a vital part of industrial plants where heavy objects require moving. Overhead travelling cranes aid in production by allowing an uninterrupted work process on the ground while heavy loads are moved to their required locations. Various factors need consideration in determining the loads induced by an EOHTC on its support structure. In order to design such a support structure, the designer must understand and take into account the various loads that the support structure will be subject to during its lifetime. The procedure for determining the loads induced by the EOHTC on its support structure is laid out in the SANS 10160-6:2010 code of practice. This document was published in June 2010 and as a result very few worked examples exist to test the coherence of the procedure. This thesis presents an investigation into the procedure for determining the actions induced by overhead travelling bridge cranes adopted in the SANS 10160-6:2010 code of practice. The investigation was conducted by developing a software application to automatically determine the necessary crane actions needed for the design of the crane support structure, given certain input parameters. The motivation behind this was to have a tool that can calculate the crane induced loads automatically. And by developing such a tool the procedure given in the code of practice is better understood. The Java programming language was used to code the calculations with an object oriented programming approach (OOP). NetBeans, the integrated development environment for developing with Java was used to generate the required graphical user interface of the application. In addition, a Microsoft Excel calculation sheet was also developed for the purpose of comparison and verification. Whilst developing the software application, it was found that the model for the acceleration or deceleration of the crane was specific for four wheel cranes only. This model was then extended to accommodate eight and sixteen wheel cranes and incorporated into the algorithm architecture of the application. The application was successfully completed and verified using benchmarked examples.
AFRIKAANSE OPSOMMING: Elektriese oorhoofse brugkrane vorm ‘n belangrike deel van baie nywerheidsprosesse, waar dit gebruik word om swaar laste in die nywerheidsaanleg te verskuif. Oorhoofse brugkrane voeg waarde by die produksie lyn deur te sorg dat die werksproses op die grond onversteurd voortgaan terwyl swaar laste na hul vereiste posisies verskuif word. Verskillende faktore moet in ag geneem word om die nodige kraanlaste te bepaal. Hierdie laste word benodig om die kraan se ondersteuningstruktuur te ontwerp. Die ontwerper moet die nodige kundigheid hê en moet ook die verskeie laste in ag neem wat die ondersteuningstruktuur gedurende sy leeftyd sal dra. SANS 10160-6:2010 verskaf riglyne vir die bepaling van die laste wat deur oorhoofse brugkrane uitgeoefen word. Hierdie dokument is in Junie 2010 gepubliseer dus bestaan daar min uitgewerkte voorbeelde om die korrektheid van die riglyne te toets en toepassing te demonstreer. Hierdie proefskrif ondersoek die riglyne vir die bepaling van oorhoofse brugkraan aksies soos uiteengesit in die SANS 10160-6:2010. Die navorsing is uitgevoer deur middel van die ontwikkeling van ‘n sagteware toepassing wat die nodige oorhoofse brugkraanlaste automaties bepaal, gegee sekere invoer waardes. Die rede hiervoor was om ‘n hulpmiddel te ontwikkel vir die outomatiese bepaling van oorhoofse brugkraan. Deur die bogenoemde hulpmiddel te ontwikkel word die riglyne, soos gegee in die kode beter verstaan. Java is gebruik as programmeringstaal waar die objek geörienteerde programeringstyl toegepas was. Die geintegreerde ontwikkelingsomgewing vir ontwikkeling met Java, naamlik NetBeans is gebruik om die nodige gebruikers koppelvlak op te bou. ‘n Microsoft Excel sigblad is ook ontwikkel vir kontrolerings doeleindes. Gedurende die ontwikkeling van die sagtewarepakket is dit bevind dat die lasmodel vir die versnelling of vertraging van die oorhoofse brugkraan slegs op vierwiel krane van toepasing is. Hierdie lasmodel is dus uitgebrei om agt- en sestienwiel krane ook te bevat. Die lasmodel aanpassing is dan ook in die program se algoritme-argitektuur ingebou. Die sagteware toepassing is suksesvol ontwikkel en gekontroleer met ‘n maatstaf voorbeeld.
Johansson, Andreas, i Elias Strandell. "RTG-System in the Container Yard of Pampusterminalen A Study on the Handling Systems Effects & Requirements". Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119951.
Pełny tekst źródłaWatson, Estelle Dorothy. "Morphological variables as possible risk factors for the drivers of rubber tyred gantry cranes at the port of Felixstowe, UK". Thesis, Stellenbosch : Stellenbosch University, 2007. http://hdl.handle.net/10019.1/22011.
Pełny tekst źródłaENGLISH ABSTRACT: The prevalence of lower back disorders and the high costs involved are an ongoing problem in industrialised countries. Research indicates an estimated 70-80% of all individuals will experience lower back pain (LBP) during the course of their lives (Manek & MacGregor, 2005; Kent & Keating, 2005; Dunn & Croft, 2004; Takeyachi et al., 2003; Carter & Birrel, 2000:6; Nourbakhsh & Arab, 2003; Bernard, 1997:374). It is widely accepted that occupational demands and physical work contribute greatly towards onset, recovery and recurrence of symptoms (Carter & Birrel, 2000:6). Rubber Tyred Gantry (RTG) crane drivers are particularly at risk, as their working posture forces them into various prolonged non-neutral trunk positions (Fehrsen-Du Toit, 2005:24; Rohlmannt et al., 2001; Nachemson, 1963) and extreme trunk flexion (Seider et al., 2003; Hoogendoorn et al., 2000). Intrinsic factors such as trunk strength (O'Sullivan et al., 2005; Bayramoglu et al., 2001) and trunk stability (Hitt & Lie, 2006; MacDonald et al., 2006; Barker et al., 2006; Hodges et al., 2005; Hodges, 2003; Hodges & Richardson, 1996) as well as anthropometric variables (Franklin et al., 2000:64), can play different roles in incidences of lumbar pain or injury. A job such as RTG crane driving is dependant on a certain amount of strength or physical fitness. A deficit in on or more of these areas can lead to compensation, overload and eventually symptoms and injury. Research has yet to identify factors that predispose certain drivers to injury, and factors determining a quick, safe recovery and return to work. The purpose of this study was to investigate possible morphological variables as risk factors for RTG crane drivers, for Hutchison Whampoa, at the Port of Felixstowe, UK. The study design was based on a cross sectional, analytical epidemiological study. A sample of 43 RTG drivers completed testing. They were divided into a group of drivers who had never had lower back pain or symptoms (n=22), and a group of drivers who had had a previous history of lower back pain (n=21). All subjects were asymptomatic at the time of testing. Although not significant (p > 0.05), the results of the study showed that average performance deficit (the power needed to maintain or repetitively produce a force) tended to be higher in those subjects without a previous history of pain. The flexion/extension ratio also tended to be better for this group. The subjects without a past history of lower back pain were, surprisingly, found to be older than the other group. This explains the higher body weight, waist-to-hip-circumference, body mass index, and fat percentage for this group, as these measurements all tend to increase with age. It also explains the lower peak torque to body weight values for that group, as peak torque would decrease with increased body weight. This is the first study to look at morphological variables and isokinetic testing of RTG crane drivers, and the relationship between these variables and lower back pain.
AFRIKAANSE OPSOMMING: Die hoë koste verbonde aan, asook die hoeveelheid voortdurende lae-rug beserings in industriële lande, is ‘n aaneenlopende probleem. Navorsing toon dat 70-80% van alle individue laer-rugpyn sal ervaar deur die loop van hul lewens (Manek & MacGregor, 2005; Kent & Keating, 2005; Dunn & Croft, 2004; Takeyachi et al., 2003; Carter & Birrel, 2000:6; Nourbakhsh & Arab, 2003; Bernard, 1997:374). Dit is aanvaar dat werksvereistes en fisiese werk grootliks bydra tot die oorsaak, herstel en herhaling van simptome (Carter & Birrel, 2000:6). RTG hyskraan bestuurders is veral individue wat ‘n groter risiko toon ten opsigte van laer-rug beserings weens werkspostuur wat hul noodsaak om verskeie langdurige nie-neutrale mid-rug posisies (Fehrsen-Du Toit, 2005:24; Rohlmannt et al., 2001; Nachemson, 1963), asook ekstreme mid-rug fleksie handhaaf (Seider et al., 2003; Hoogendoorn et al., 2000). Sekere individuele intrinsieke faktore soos mid-rug krag (O'Sullivan et al., 2005; Bayramoglu et al., 2001) mid-rug stabiliteit (Hitt & Lie, 2006; MacDonald et al., 2006; Barker et al., 2006; Hodges et al., 2005; Hodges, 2003; Hodges & Richardson, 1996), en antrpometriese veranderlikes (Franklin et al., 2000:64), kan ‘n aansienlike verhoging in moontlike laer-rug pyn of –beserings meebring. ‘n Werk soos RTG hyskraan bestuur is afhanklik van sekere hoeveelheid krag of fisiese fiksheid. ‘n Tekortkoming in enige van hierdie areas kan lei tot oorkompensering, oorbelading en uiteindelike simptome van besering. Vrae wat navorsing nog moet antwoord is onder andere die faktore wat aanleiding gee tot beserings asook wat vinnige en veilige terugkeer na werk vir bestuurders bepaal. Die doel van die studie was om moontlike morfologiese veranderlikes en risiko faktore te bestudeer vir RTG hyskraan bestuurders, vir Hutcinson Whampoa, te Felixstowe hawe, VK. Die rol wat hierdie faktore speel in die oorsaak en ontwikkeling van rugpyn word ook ondersoek. ‘n Protokol van toetse is gekies om moontlike morfologiese risiko faktore uit te lig en daardeur bestuurders wat meer geneig is om laer-rugpyn te ontwikkel te identifiseer. ‘n Totaal van 43 RTG bestuurders het die toets voltooi. Hierdie bestuurders is verdeel in ‘n groep wat nog nooit laer-rugpyn of simptome getoon het nie (n=22) en ‘n groep bestuuders wat wel vorige geskiedenis van laer-rugpyn het (n=21). Alle deelnemers was asimptomaties met die aanvang van die toetsing. Alhoewel resultate van die toets nie noemenswaardig was nie (p>0.05), het dit wel getoon dat algemene prestasie tekortkoming (spierkrag benodig om kraguitset te handhaaf of om herhaaldelik uit te voer) geneig was om hoër te wees in individue sonder ‘n vorige geskiedenis van rug besering. Die fleksie/ekstensie verhouding het ook beter vertoon in hierdie groep. Individue sonder vorige geskiedenis van laer-rugpyn is interessant genoeg, ouer as die met geskiedenis van laer-rug beserings. Dit verduidelik die hoër liggaamsgewig, middelheup- verhouding en liggaamsmassa indeks en vet persentasie van hierdie groep weens die feit dat al reedsgenoemde geneig is om met ouderdom toe te neem. Dit kan ook piekkraguitset tot liggaamsmassa waardes van hierdie groep verduidelik omdat piekkraguitset sal verminder met toename in liggaamsmassa. Hierdie is die eerste studie wat die uitkyk bied op morfologiese veranderlikes tesame met isokinetiese toetsing van RTG hyskraan bestuurders en die verhouding tussen hierdie veranderlikes en laer-rugpyn.
Bureš, Martin. "Jeřáb pro manipulaci s leteckými agregáty". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-231033.
Pełny tekst źródłaSobue, Gustavo. "Modelagem paramétrica de pórticos rolantes: estabilidade estrutural e otimização". Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/3/3135/tde-30082005-141837/.
Pełny tekst źródłaThe objective of this work is to develop a tool to generate an automatic structural design of gantry cranes. With an automatic generation of finite element models and also a design report, this routine allows a fast verification against yield of material and structural instability. The use of the finite element method was chosen for the structural design because it is a modern analysis tool that permits the evaluation of geometric configurations for which there are no analytical formulations available. However, the time necessary to build these models may be high, especially if there are changes in the initial geometry and many load cases. The use of a pre-processor allows the evaluation of a series of geometric alternatives, within which would be chosen the one with the lowest cost that attends the clients specifications. Like many other engineering problems, there are no direct equations to find an adequate structure; there are only verification procedures available; the optimum structures are searched by trial and error, based on the designers experience. To accelerate this search process, an optimization routine was developed. Mass reduction was adopted as the objective function, which leads to reduction of the cross section area of the beams. Yield strength and buckling were adopted as restrictions to this optimization. Excel (Microsoft), Ansys (Ansys Inc) and Mathcad (Mathsoft) software were integrated to provide an user-friendly interface, reliable structural analysis and an automatic report generation.
Huang, Kuan-chun. "Integrated sensing, dynamics and control of a mobile gantry crane". Thesis, University of Edinburgh, 1997. http://hdl.handle.net/1842/14123.
Pełny tekst źródłaArlauskas, Vilius, Mindaugas Bosas i Laimonas Narbutas. "Ožinis 20t keliamosios galios kranas". Bachelor's thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120702_123644-18211.
Pełny tekst źródłaThe final paper’s theme is to design the gantry crane which load’s capacity is 20 tones. The variant analysis was done. It revealed that chassis gear, telpher, and beam were the most suitable parts for the gantry crane. The technological analysis showed what kind of equipment was needed in order to product two shafts and the girder. The gantry crane’s economical indicators, the crane’s cost price and its possible sale-price were calculated.
Nolte, Niklas. "Container Madness : Skapandeprocess av ett spel som simulerar en ARMG -- Automated Rail Mounted Gantry crane". Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-12559.
Pełny tekst źródłaZárate, Moya José Luis. "Tracking controller design for a nonlinear model of a gantry crane based on dynamic extension and robustification". Master's thesis, Pontificia Universidad Católica del Perú, 2015. http://tesis.pucp.edu.pe/repositorio/handle/123456789/6411.
Pełny tekst źródłaKräne werden in der Industrie für den Transport schwerer Lasten eingesetzt. Man findet sie im Hochbau, Fabriken und Häfen. Traditionell werden sie von erfahrenen Kranführer betrieben. Das der Arbeit zugrunde liegende Kransystem besteht aus drei Hauptkomponenten: Transporteinheit, Brücke und Gerüst. Im Regelbetrieb ist das Schwingen von Krannutzlasten einer sicheren und effizienten Nutzung abträglich. Auch andere externe Störparameter wie beispielsweise der Wind haben einen Einfluss auf die Kontrollierbarkeit eines Krans. Grundsätzlich ist ein Kransystem ein unteraktuiertes System. Deshalb verkompliziert sich im Allgemeinen der Entwurf einer Regelung, meist auf Basis der Kranbeschleunigung. Regelziele bei der Kranbewegung sind u.a. eine hohe Positioniergenauigkeit, kurze Transportzeit, kleine Pendelwinkel und hohe Sicherheit. Das Hauptziel dieser Diplomarbeit ist der Entwurf einer robusten Reglung, gründend auf der H∞-Regelungsttheorie, für ein nichtlineares Modell eines 3-D-Portalkran- Systems. Das Verfahren soll mit dem klassischen Controllerdesign verglichen und resultierende Regelungsprobleme infolge von Störungen im Nutzlasttransport untersucht werden. Das Modell beschreibt die Position der Last sowie deren zeitliche Ableitungen. Davon kann das Problem für den Entwurf einer flachheitsbasierten Vorsteuerung abgeleitet werden, die dann mit einer optimalen, linearen bzw. nichtlinearen Regelung verbunden wird. Die nominalen Zustände können als Optimierungsparameter und Beschränkungen für die Stabilität, Überschwingen, Positionsregelung und Schwingungswinkel verwendet werden, unabhängig von der Lastmaße und in Abhängigkeit von der Seillänge. Dabei wird wie folgt vorgegangen: Zunächst wird ein nichtlineares Systemmodell mit Hilfe der Lagrange-Gleichungen erstellt. Dann wird das System mit Hilfe einer dynamischen Erweiterung exakt linearisiert. Als nächstes wird der geschlossene Regelkreis auf Basis der linear-quadratischen Regelung untersucht und mit einer robusten H∞ Regelung zur Kompensation von Modellierungsfehlern oder systeminterner und -externe Störung verglichen. Schließlich werden Simulationsergebnisse vorgestellt, welche die Wirksamkeit des Entwurfes belegen. Ein Ergebnis st dabei die verbesserte Leistung des nichtlinearen Reglers gegenüber dem klassischen Regler. Dies wird anhand einer Fähigkeit zu Verfolgung einesr schnellen Bahn, der Präzision der Positionierung und der minimalen Einflussbewegung der Nutzlast dargestellt.
Tesis
Wu, Jia-Jang. "An analysis of the structural dynamics of a mobile gantry crane with application to automation of container management". Thesis, University of Glasgow, 2000. http://theses.gla.ac.uk/1937/.
Pełny tekst źródłaDias, Aleš. "Jeřáb radiální portálový". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254381.
Pełny tekst źródłaOliva, Petr. "Jeřábová kočka hradidlového portálového jeřábu". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-442808.
Pełny tekst źródłaSouza, Edson José Cardoso de. "Controle anti-oscilatório de tempo mínimo para guindaste usando a programação linear". Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/3/3139/tde-21122009-133032/.
Pełny tekst źródłaThe problem of minimum-time anti-swing transfer of a load in a ship-to-pier gantry crane is investigated in this work. The load is assumed to be initially at rest at the vertical position at the loading point above the ship and equally at rest at the unloading point above the hopper. The trolley is also assumed to be at rest at both points. A complete model is presented for the crane system where the nonlinear dynamic equations are linearized for sufficiently small swing angles and then rewritten in dimensionless form. The minimum-time solution is sought by considering as control variables both the force applied on the trolley that produces its horizontal motion and the hoisting speed of the load as functions of time. A predictor-corrector iterative method using Linear Programming (LP) is proposed based on a discretetime model of the system where the control variables are taken as stepwise constants. At the corrector step, the hoisting motion is assumed given and a minimum-time solution is obtained by solving a sequence of LP problems representing fixed-time maximum-range problems. At the predictor step, a linearized model is employed to obtain an optimal correction of the hoisting motion using LP. The minimum-time control problem is formulated by taking into account practical constraints on the maximum speeds of both the trolley and the load hoisting, as well as on the maximum force that can be applied to the trolley. Numerical results are presented and show the effectiveness of the method.
Béreš, Lukáš. "Matematické modelování pomocí diferenciálních rovnic". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318707.
Pełny tekst źródłaCosta, Giuseppe. "Robust control for gantry cranes /". 1999. http://www.library.unsw.edu.au/~thesis/adt-NUN/public/adt-NUN2000.0009/index.html.
Pełny tekst źródłaHung, Cheng-Yi, i 洪誠一. "Dynamic Simulations of DC Machines for Gantry Cranes". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/83844508787021841718.
Pełny tekst źródła義守大學
電機工程學系
92
The objective of this thesis is to investigate the dynamic simulations of the dc machines which are associated with a gentry crane for harbour container centre. Manipulation of a gentry crane for precisely positioning the container is a vital factor for the harbour container centre. It has to operate so fast in order to keep punctuality. Therefore, to place the container, cranes are always required to run forward and backward frequently, precisely and quickly. The major components in a gentry crane of a harbour container centre are the hoist and trolley. They are energised by dc marchines. This thesis first simulates their dynamic responses, such as lifting up and lowering down, speeding up and slowing down. Next, when the dc machines are operating in the regenerative braking mode, they will act as generators and feed a little active power back to the electric system. Such an operating mode will in turn cause terminal voltage rising up. Extensive computer simulations are executed to illustrate the phenomena, and are validated by the practical results which are obtained from the scene of the worksite.
Ji, Guo-Bin, i 紀國斌. "Optimized Routing Problem for Multiple Rail Mounted Gantry Cranes". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/23998063181310341860.
Pełny tekst źródła國立臺灣海洋大學
航運管理學系
92
The trend of globalization and ship enlargement causes not only the larger volume of container traffic, but also the workload of per voyage substantially increasing. Storage areas, play the buffer roles for inbound and outbound containers at a terminal, are the first to be affected. Facing this situation, more and more terminals adopt Rail Mounted Gantry Crane (RMGC) to enhance capacity on exiting yard space. For the limitation of the rails, RMGCs should move by some rules. When a number of RMGCs simultaneously work in a yard block, the whole operation becomes more complex. This research focuses on routing multiple RMGCs among yard bays to minimize the working time of loading operation in container terminal. A min-max model followed the characteristics of RMGC operation is formulated and solved by a heuristic algorithm. This algorithm includes the container sequencing problem and the crane assignment. According to the initial working sequence, tabu search is applied to adjust the loading sequence of containers. Then, cranes are assigned to serve each loading job. Furthermore, the performances of the algorithm are evaluated by the results of different numerical experimentations, and the related analyses are discussed.
Chou, Chen-Ning, i 周貞寧. "Assigning Preferred Areas for Export Containers in Terminals:The Perspective of Automatic Rail-Mounted Gantry Cranes". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/77519394727079894146.
Pełny tekst źródła國立臺灣海洋大學
航運管理學系
99
Due to the increasing size of modern ships, the demand of the capacity of the yard is increasing. Owing to the limitation of existing yard space, many terminals have equipped with rail mounted gantry crane (RMGC) to stack containers in a close and high manner to increase the capacity of the yard, which tends to result in reshuffles while picking out the containers if they are not appropriately allocated. To reduce unproductive movements and increase the yard operation efficiency, preferred areas allocating problems (PAAP) has become a critical issue for terminal operators to plan the storage space prior to the arrival of containers. As automatic RMGCs (ARMGCs) have become the predominant yard crane in many terminals, this study develops a mathematical model based on a multi-commodity time space model to deal with the PAAP of exports containers in automatic terminal. The model minimizes the total cost comprising the assigning cost for new arrival, relocating and withdrawing containers. The proposed model has been proved rational and useful by empirical study and sensitivity analyses. The conclusions and suggestions for future studies are also summarized in this thesis.
Wang, Dah-Ming, i 王大明. "A Study of Overhaul & Replacement Scheduling of Container Gantry Cranes in Keelung Harbor Bureau". Thesis, 1996. http://ndltd.ncl.edu.tw/handle/21679188223491153033.
Pełny tekst źródła國立交通大學
交通運輸研究所
84
Containerized transportation is the most important means in international cargoes shipping today. At present the port industries are competing strongly among Kaohsiung, Keelung, Taichung port in Taiwan. Container traffic is a majorindex to show the importance of the port in this competitive market. The service quality of container gantry cranes affects the Keelung port competitive power. The goal of this research is to study overhaul and replacement scheduling of container gantry cranes in Keelung port and hope to improve service quality by appropriate scheduling. This paper established indexes to estimate scheduling first , then finding fesible schedulings and using genetic algorithm to choose a better scheduling. The analysis shows that the accumulation of failure hours is a strictly increasing quadratic function of working hours after beginning ofoperation or overhaul. The objective of this research considered here includingfailure rate , the number of overhaul cranes and cost.
Tien-WeiLan i 藍天蔚. "A Heuristic Algorithm for Solving the Pre-marshalling Problem of Container Yard with Two Gantry Cranes". Thesis, 2019. http://ndltd.ncl.edu.tw/handle/p85szc.
Pełny tekst źródła國立成功大學
工業與資訊管理學系
107
It is possible to reduce the container ship’s docking time by making good use of time to pre-arrange containers when there is no ship stopping by the quay. In order to determine the order of pre-marshalling operations, we built an integer programming model to solve it. Our research is different from current literatures since we expand the scale of the problem from a single bay to multiple bays and add corresponding restrictions to meet the situation where two RMGCs operate simultaneously. However, results showed that we can only solve small-scale problems by using Gurobi to solve the model due to the complexity of pre-marshalling problem. For medium-to-large-scale problems, we proposed a heuristic algorithm to solve it. For small-scale problems, the heuristic algorithm can obtain result that is almost the same as the model’s solution. Moreover, when it comes to the large-scale problems that model can hardly solve with, the heuristic algorithm can acquire solution within reasonable time. Our research also showed that due to considering moving containers between different bays, the pre-marshalling operations would be more efficient based on our data. Moreover, if the objective is to minimize the workload of RMGCs, using one RMGC sometimes is better than using two. However, if the objective is to minimize the finish time, almost all results suggest that using two RMGCs is better.
Su, Cheng-Yuan, i 蘇成元. "The Studay of Perormance Enhancement for Gantry Crane". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/59834668828917691371.
Pełny tekst źródła國立高雄應用科技大學
電機工程系
97
Energy becomes a global issue, so energy saving concept starts to be promoted. In world energy consumption, motor drives or related machines take most percentage. All industries need material, semi-finished products and final products delivery, so crane is required for better specification. How to reduce crane energy consumption is most important part in automatic production process, especially for logistics to search and manage material faster. Induction motor is general industry power source because of cheaper price and easy maintain. Induction motor needs to follow all different requirements, because crane is complex, and turns on often. Motor for crane basically needs large starting torque, low starting current, slow starting response, fast lifting speed and slow stopping in position. Conventional speed control is still main crane motor control method because of cost considering, though inverter becomes popular. If we can reduce starting current of induction dual-pole motor, then we can increase its efficiency. In this thesis, a high different speed ratio motor (2/12 dual-pole motor) will be increased efficiency. Also, compares with slots of 2 and 4 pole motor to analysis influence between slot and efficiency. FEM is a mature simulation method to calculate magnetic field variation precisely. By using simulation result, tests real 3-phase 2/12 pole motor to see efficiency increase. Keywords:Induction motor、Finite Element Methods、crane
Yu-ChenLee i 李宥臻. "Development of Auxiliary System for Loading Containers with Gantry Crane". Thesis, 2018. http://ndltd.ncl.edu.tw/handle/q3vdz3.
Pełny tekst źródłaChen, Ming-Hui, i 陳明輝. "Optimum Sequencing of Export Containers in Rail-mounted Gantry Crane Operation". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/06590009403046165310.
Pełny tekst źródła國立臺灣海洋大學
航運管理學系
94
Abstract Harbor which efficiency of loading and discharging influences shipper’s willing to berth is the gate of shipping transportation service. Container yard plays an alleviated role of proceeding in loading and discharging and is in charge of regulating and supplying in container flow rate. Within plenty of machine, Rail-mounted Gantry Crane (RMGC) with large span and high stack raises capacity of yard substantially and utility rate of land. Although RMGC enhances utility rate of land, intense arrangement and high stack increase the complexity and difficulty in lifting container. Therefore, we should work out arrangement of loading sequence of exporting deliberately to avoid any delay of loading and discharging operation. This study investigates the shift of single RMGC and operation identity of lifting container, arranges sequence in loading exporting container appropriately, and plans the most suitable route and the shortened time in lifting container to enhance operation efficiency. Also, we use planning skills in mathematics to establish a model which is followed the characteristics of RMGC’ s movement and spreader to minimize the total working time. Further, we use Optimal Programming Language (OPL Studio) to transfer model into programming language and branch-and-bound method to proceed in solving illustration. Through actual information supplied from enterprises, we could verify rationality and suitability of solving through this model. By testing illustration, compared between the result in solving model and illustration, the operation time reduces completed time of RMGC’ s movement and total completing time up to 5.722% and 5.442% in average separately. This result verifies this model decreases operation time remarkably. Further through sensitivity analysis, we could find out the following results: the faster speed of RMGC shifts, the objective value only reflects the lifting time; the length of staying time effects objective value slightly; whether the length of reshuffle time, the variation of reshuffle time wouldn’t influence objective value. By the way, we take reshuffle time into consideration, we don’t want to cause any delay in operation time by marshalling. Keywords: Rail-mounted Gantry Crane, loading sequence of exporting, OPL.
Yang, Chi-Hao, i 楊祁浩. "The Study of Performance Evaluation with Mounted Gantry Crane Operational Simulation in the Container Yard". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/8wd8qu.
Pełny tekst źródła國立臺灣海洋大學
商船學系
105
Taiwan is an island state surrounded by sea. Most of goods trade depends on marine transport. However, container terminal becomes an important part of marine transport. The efficiency of terminal operation and operating expense are two of the most important decision factors for the shipping companies. Kaohsiung Port is the largest trade port in Taiwan. Consequently, this study intends to use the newest construction of Kaohsiung Port’s the sixth linear container terminal blocks deploy as a sample. By simulating the block deployment in system, simulation and evaluating the differences include sailing assigned of transit container, diversity operating equipment and using group operations or not. Compare the berth operational performance and the block equipment operational performance to programs and achieve the following purpose: (1) Cut down average berth operational time (2) Reduce average gantry crane waiting rate (3) Decrease average block equipment waiting time To explore the operational performances, choose Rubber Tire Gantry Crane, Standard Rail Mounted Gantry Crane and Dual Cantilever Rail Mounted Gantry Crane, three operational modes, design twelve programs and analyze it. As the result, we discuss all simulation programs to get the best control parameters is RTG with group operations and the mode of transit container distribute.
Bruns, Florian. "Optimization of operative planning in rail-road terminals". Doctoral thesis, 2014. https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-2014091612814.
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