• Title/Summary/Keyword: yard crane

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A Development of an Integrated Inventory Managing System for Steel-Plates (강재 통합 관리 시스템 개발)

  • Lee, Seok Hyun;Yu, Ji Hun;Kim, Hyun Chul;Jang, Seok Min;Lim, Rae Soo;Kim, Ho Kyeong;Heo, Joo Ho
    • Journal of the Society of Naval Architects of Korea
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    • v.51 no.2
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    • pp.130-137
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    • 2014
  • As one of the largest shipbuilding company in the world, STX Offshore & Shipbuilding currently developed an inventory managing system for steel-plates, which is applied to their steel stock yard. In a traditional way to manage steel yard, almost every work has been done by manually. The manual steel-plate piling process caused some problems such as process delay due to piling errors and the uncertainty of work plan due to lack of information. To solve these problems, we developed an integrated inventory managing system based on real-time crane tracking system which automatically updates steel-plates' piling status. We built the integrated steel-plate database, developed several programs including steel-plate input program, real-time steel-plate monitoring program and steel-yard management program, and constructed hardware system for tracking magnetic cranes. As a result, a supervisor of steel-yard can manage the inventory of steel-plates efficiently and furthermore plan an efficient piling schedule and crane working schedule.

Anti-sway System for Automatic Container Terminal (자동화 컨테이너 터미널용 Anti-Sway 시스템)

  • 박경택;박찬훈;김두형
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2002.05a
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    • pp.428-431
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    • 2002
  • 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 are 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. ropes. The control strategy with auxiliary rope is very useful to sway control of yard crane because rope length is shorter than quay-side container cranes. In this paper, we derive equations of motion of trolley system which have anti-sway controller to use auxiliary rope. And main schemes are introduced and explained briefly.

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A Study of Comparison with the Operating Priority Rules of RMGC on Semi-Automated Container Terminal (반자동화 컨테이너터미널의 RMGC 운영방식 비교 분석)

  • Kim, Chan-Ho;Ha, Tae-Young;Yang, Hong-Suk
    • Journal of the Korean Operations Research and Management Science Society
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    • v.35 no.2
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    • pp.1-17
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    • 2010
  • This paper aims to compare four operating priority rules of RMGC (Rail Mounted Gantry Crane) used in semi-automated container terminal. The four priority rules employed in this paper are FCFS (First-come-first-served), LCFS (Last-come-first-served), TOS (Turn-over-served) and NFS (Nearest-first-served). And to compare the four operating priority rules, this paper analyzed productivity of RMGC and CC (Container Crane), waiting time of YT (Yard Truck) and RT (Road Truck) in container yard, and turnaround time of RT in container terminal of each priority rule by using stevedoring simulation. As a result, NFS was evaluated as the best rule to improve the overall productivity of container terminal in terms of all criteria.

A Simulation Study on a Workload-based Operation Planning Method in Container Terminals

  • Jeong, Yeon-Ho;Kim, Kap-Hwan;Woo, Youn-Ju;Seo, Bo-Hyeon
    • Industrial Engineering and Management Systems
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    • v.11 no.1
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    • pp.103-113
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    • 2012
  • A yard in a container terminal is a temporary storage space before containers are loaded onto the target vessel or delivered to consignees. For improving the utilization of the space in the yard and the efficiency of loading and discharging operations, it is important that operation plans must be carefully constructed in advance. A heuristic method is suggested to solve operation space planning problems considering workloads on handling equipment as well as space availabilities. The operation plans in this paper includes quay crane (QC) schedules and space plans for multiple vessels considering the workload in the container yard of container terminals. This paper evaluates the effectiveness of a space planning method and the performance of a new QC scheduling method using a simulation model.

Crane Scheduling Considering Tenant Service Time in a Rail-Road Transshipment Yard : Case of the Uiwang ICD (철도-육상트럭 환적지에서의 입주사 작업시간을 고려한 크레인 적하작업 스케줄링 : 의왕ICD 사례)

  • Kim, Kwang-Tae;Kim, Hyo-Jeong;Son, Dong-Hoon;Jang, Jin-Myeong;Kim, Hwa-Joong
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.41 no.4
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    • pp.238-247
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    • 2018
  • This paper considers the problem of scheduling loading and unloading operations of a crane in a railway terminal motivated from rail-road container transshipment operations at Uiwang Inland Container Depot (ICD). Unlike previous studies only considering the total handling time of containers, this paper considers a bi-criteria objective of minimizing the weighted sum of the total handling time and tenant service time. The tenant service time is an important criterion in terms of terminal tenants who are private logistics companies in charge of moving containers from/to the terminal using their trucks. In the rail-road container shipment yard, the tenant service time of a tenant can be defined by a time difference between beginning and finishing loading and unloading operations of a crane. Thus, finding a set of sequences and time of the crane operations becomes a crucial decision issue in the problem. The problem is formulated as a nonlinear program which is improved by linearizing a nonlinear constraint in the model. This paper develops a genetic algorithm to solve the problem and performs a case study on the Uiwang ICD terminal. Computational experiment results show that the genetic algorithm shows better performance than commercial optimization solvers. Operational implications in terms of tenants are drawn through sensitivity analyses.

Performance Analysis of A Shuttle Carrier at Automated Container Terminal (자동화 컨테이너 터미널의 Shuttle Carrier 이송능력 분석)

  • Ha, Tae-Young;Choi, Yong-Seok
    • Journal of the Korea Society for Simulation
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    • v.14 no.3
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    • pp.109-118
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    • 2005
  • The purpose of this paper is to analyze transport ability of AGV(Automated Guided Vehicle) and SHC(SHuttle Carrier). The main difference between two types of transport vehicles is that AGV depends on container crane or transfer crane to do loading/unloading container, but SHC is very independent to it. Therefore, the transport ability of SHC is expected to be higher than AGV. So, in this paper, we established simulation model to evaluate two types of transport vehicles and analyzed the results. Simulation model was established to automated container terminal with perpendicular yard layout, and applied closed loop operation of transport vehicle between apron and stacking yard. In the result, SHC showed very superior than AGV aspect of container crane productivity and vehicle fleets.

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Performance Analysis of A Shuttle Carrier at Automated Container Terminal (자동화 컨테이너 터미널의 셔틀 캐리어 이송능력 분석)

  • Ha, Tae-Young;Choi, Yong-Seok
    • Proceedings of the Korea Society for Simulation Conference
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    • 2005.05a
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    • pp.57-63
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    • 2005
  • The purpose of this paper is to analyze transport ability of AGV(Automated Guided Vehicle) and SHC(SHuttle Carrier). The main difference between two types of transport vehicles is that AGV depends on container crane or transfer crane to do loading/unloading container, but SHC is very independent to it. Therefore, the transport ability of SHC is expected to be higher than AGV, So, in this paper, we established simulation model to evaluate two types of transport vehicles and analyzed the results. Simulation model was established to automated container terminal with perpendicular yard layout, and applied closed loop operation of transport vehicle between apron and stacking yard. In the result, SHC showed very superior than AGV aspect of container crane productivity and vehicle fleets,

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A Development ATCS for Automating th e Stacking Crane

  • Choi, Sung-Uk;Lee, C.H.;Kim, Jung-Ho;Lee, J.W.;Lee, Young-Jin;Lee, Kwon-Soon
    • 제어로봇시스템학회:학술대회논문집
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    • 2001.10a
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    • pp.131.6-131
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    • 2001
  • During the operation of crane system in container yard, it is necessary to control the crane trolley position and loop length so that the swing of the hanging container is minimized. Recently an automatic control system with high speed and rapid transportation is required. Therefore, we designed a controller to control the stacking crane system.

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Cycle Time Models for Yard Cranes Considering Block Layouts in Container Terminals (컨테이너 터미널에서 블록의 레이아웃을 고려한 야드 크레인의 주기시간 모형)

  • Lee, Byung Kwon;Kim, Kap Hwan
    • Journal of Korean Institute of Industrial Engineers
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    • v.33 no.1
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    • pp.110-125
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    • 2007
  • Various different types of yard cranes are used in container terminals. Examples are rubber tired gantry cranes,rail mounted gantry cranes, overhead bridge cranes, dual rail-mounted gantry cranes, and automated stacking cranes. The kinematics and handling characteristics of these yard cranes are different from each other. Ttiis study analyses charactehstics of generic types of yard cranes which represent various yard cranes m practice Demg used in several types of block layouts, Considering specifications of yard cranes and block layouts, expected cycle times and variances of the cycle time are estimated for different handling activities.

Standardization of Maintenance and Failure of Transfer Crane (Transfer Crane의 고장 및 정비 표준화)

  • Yun Won-Young;Lee You-Hyoun;Ha Young-Ju;Kim Gui-Rae;Son Bum-Shin
    • Journal of Navigation and Port Research
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    • v.30 no.6 s.112
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    • pp.525-531
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    • 2006
  • In the port, the yard crane is very important. If a container crane or a transfer crane is broken down, it costs a lot because of the delay of work during the period of repair or reorder. But, we don't have enough spare parts because of the high cost. It is necessary to maintain high reliability of the crane through effective preventive maintenance and failure analysis. In this paper, we analyse the function and failure mechanism of the transfer crane which is a main equipment in the yard Also, we standardize failures and maintenance works using the historical data of failure and maintenance. This study which is a basic work for effective equipment operation and maintenance will support reliability engineers to decide the optimal design of the next generation equipment and operational policy of equipment.