• Title/Summary/Keyword: yard crane

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Deployment of Yard Cranes Considering Storage Plans in Container Terminals (컨테이너 터미널에서 장치계획을 고려한 야드 크레인 배치 문제)

  • Won, Seung-Hwan;Kim, Kap-Hwan
    • Journal of Navigation and Port Research
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    • v.33 no.1
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    • pp.79-90
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    • 2009
  • The main function of a container terminal is to load container freights into vessels and discharge them from vessels. The container terminal needs to utilize its resources effectively in order to improve the productivity of it. This study deals with the deployment model for yard cranes whose type is RMGC (rail mounted gantry crane). We develop a mathematical model for the deployment of yard cranes. The model considers not only the deployment but also the storage plans. It could be divided into two cases according to whether inter-block movements of yard cranes are allowed or not, during the same period Numerical examples are solved and analyzed to validate the model. Then, additional experiments are performed to compare the performance of the model with that of a previous model without the re-deployment of yard cranes.

Electric Yard Tractor with Furtive Charging (Furtive 충전을 활용한 전기식 Yard tractor)

  • Lee, Dong-Su;Lim, Dong-Nam;Jeon, Seong-Jeub;Ko, Young Suk
    • Proceedings of the KIPE Conference
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    • 2014.07a
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    • pp.482-483
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    • 2014
  • In this paper, an electric yard tractor (YT) with furtive charging system is investigated. YT is one of pollution sources in container terminals. The furtive charging system does not impose difficulties on YT day-schedule because charging is performed when a YT is waiting under RTGC (Rubber Type Gantry crane) or Quay-wall crane.

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Applying Ultra-WideBand Location System to Yard Crane (UWB위치인식 시스템의 야드 크레인 적용)

  • Park, Dae-Heon;Kang, Bum-Jin;Park, Jang-Woo;Cho, Sung-Eon
    • Journal of Advanced Navigation Technology
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    • v.12 no.3
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    • pp.215-219
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    • 2008
  • Recently, a container shipping volume has increased dramatically and continued on a trend of rapid growth, and so the number of container handled at the port increase. therefore, it's increasing about concern of harbor automatism to save distribution costs in harbor. harbor automatism classifies into four large automatism's, gate automatism by using RFID that trailer come with burdening the container to be loaded on ships go though with RFID and Quay-Side container crane automatism that treats cargos loading on ships and automatism of CG that loads containers from yard, and automatism of container transporters that carries containers in between gates. To increase the using efficiency of harbor, detecting exact location of yard crane is very important matter. In this paper, propose about yard crane automatism applied UWB Location system and the development direction.

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The Study suitable for Ultra-WideBand Location System in Yard Crane System (야드 크레인 시스템에서 UWB위치인식 시스템 적용연구)

  • Park, Dae-Heon;Kang, Bum-Jin;Park, Jang-Woo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2007.10a
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    • pp.907-910
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    • 2007
  • Recently, a container shipping volume has increased dramatically and continued on a trend of rapid growth, and so the number of container handled at the port increase. therefore, it's increasing about concern of harbor automatism to save distribution costs in harbor. harbor automatism classifies into four large automatism's, gate automatism by using RFID that trailer come with burdening the container to be loaded on ships go though with RFID and Quay-Side container crane automatism that treats cargos loading on ships and automatism of CG that loads containers from yard, and automatism of container transporters that carries containers in between gates. To increase the using efficiency of harbor, detecting exact location of yard crane is very important matter. In this paper, it intends to discuss about yard crane automatism applied UWB Ranging system and bring up the development direction.

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Anti-Sway System for Automated Crane (자동화 크레인을 위한 흔들림 방지 시스템)

  • 박찬훈;김두형;박경택
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1997.10a
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    • pp.446-449
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    • 1997
  • Yard cranes are very useful equipments for handling of heavy containers. But rope-driven yard cranes must have a little of sway and skew motion because ropes arc passive mechanical device. So many researches have been concentrated on anti-sway algorithm controlling trolley speed. But control algorithm of trolley speed is not practical in windy weather. In this paper, we are going to propose a new structure for anti-sway. This structure uses aux. :opes. The control strategy with auxiliary rope is very useful to sway control of yard crane because rope length is shorter than quay-sidc container cranes. In this paper, we derive cquatlons of motion of trolley system which have anti-sway controller to use auxiliary rope. And we propose the control strategy and analyse the behavior of the proposed system.

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Expressions for Expectations and Variances of Cycle Times for Yard Cranes by Considering Dependencies among Time Elements

  • Lee, Byung-Kwon;Kim, Kap-Hwan;Yun, Won-Young
    • Industrial Engineering and Management Systems
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    • v.10 no.4
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    • pp.255-263
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    • 2011
  • During the design process of a terminal, the handling capacity of a container yard needs to be evaluated in advance. This study suggests formulas for estimating the expectations and the variances of cycle times for various types of operations of a yard crane. Statistical analysis is used to estimate the expectations and variances. The main focus of this study is to show the impact of interdependencies among handling time elements on the expectation and variance of the cycle times; these interdependencies have not been considered in previous studies. Numerical experiments are done for evaluating the difference in the variance of cycle times and the waiting of trucks between the cases with and without the consideration of interdependencies.

Real Time Scheduling for Multiple Yard Cranes in an Automated Container Terminal (자동화 컨테이너 터미널의 복수 장치장 크레인을 위한 실시간 작업 계획 수립)

  • Park, Tae-Jin;Choe, Ri;Ryu, Kwang-Ryel
    • Journal of Navigation and Port Research
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    • v.31 no.10
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    • pp.869-877
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    • 2007
  • This paper proposes a realtime scheduling method using local search algorithm for non-crossable yard cranes in automated container terminal. To take into consideration the dynamic property of yard crane operation and satisfy the real time constraint, the proposed method repeatedly builds crane schedule for the jobs in a fixed length look-ahead horizon whenever a new job is requested In addition, the proposed method enables the co-operation between yard cranes through prior re-handling and re-positioning in order to resolve the workload imbalance problem between the two cranes, which is one of the primary causes that lower the performance of yard cranes. Simulation-based experiments have shown that the proposed method outperforms the heuristic based methods, and the cooperation scheme contributes a lot to the performance improvement.

The Anti-Sway System for Yard Crane Using Auxiliary Ropes (보조로프를 이용한 야드크레인의 안티스웨이 시스템)

  • 박찬훈;박경택;김두형
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2002.10a
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    • pp.526-529
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    • 2002
  • The development of automated container terminal has been a hot issue for recent years. It's very natural because it's very important how many containers, how soon, and how precisely a container terminal can treat. A crane treats a very heavy container, maybe, no less than 20∼40 tons, thus most cranes use ropes to take up and land containers. But rope causes the sway of a container and this phenomenon is not avoided. On the ground of this, in most case how much skillful a driver is may affect the productivity of a yard or quay crane. Thus many researches have been concentrated on the development of the control algorithm for a crane which may be useful and robust enough to drive a crane without any human driver. Authors of this paper also are interested in this kind of research but we have been much more interested for years in the development of a mechanical structure which may cause much less sway than the existing cranes do. In this paper, we may introduce the basic structure of the developed anti-sway system.

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A Study for Monitoring Operator of Container Terminal (컨테이너 터미널의 모니터링 운영에 관한 연구)

  • 김영호;김정수;박병열;이성관;배종일
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.64-64
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    • 2000
  • The contributing proportion of the increase of port productivity is more increasing concerning not only the port industry, but also all the informations of container crane which is the representative equipment by the rapid increase of the volume of freight of port. The basic of rapid service is the improvement of the productivity, the information of operation as to the productivity of crane for the quick handling within yard and especially the informations of breakdown and to handle breakdown as soon as possible has a great effect on the increase of productivity.

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Dual Cycle Plan for Efficient Ship Loading and Unloading in Container Terminals (컨테이너 터미널의 효율적인 선적 작업을 위한 Dual Cycle 계획)

  • Chung, Chang-Yun;Shin, Jae-Young
    • Journal of Navigation and Port Research
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    • v.33 no.8
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    • pp.555-562
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    • 2009
  • At container terminals, a major measurement of productivity can be work-efficiency in quay-side. At the apron, containers are loaded onto the ship and unloaded to apron by Q/C(Quay Crane). For improving the productivity of quay crane, the more efficient Y/T(Yard Tractor) operation method is necessary in container terminals. Between quay-side and yard area, current transferring methods is single-cycling which doesn't start loading unless it finishes unloading. Dual-cycling is a technique that can be used to improve the productivity of quay-side and utility of yard tractor by ship loading and unloading simultaneously. Using the dual-cycling at terminals only necessitates an operational change without purchasing extra equipment. Exactly, Y/T operation method has to be changed the dedicate system to pooling system. This paper presents an efficient ship loading and unloading plan in container terminals, which use the dual-cycling. We propose genetic and tabu search algorithm for this problem.