• Title/Summary/Keyword: shuttle car

Search Result 33, Processing Time 0.036 seconds

Optimum Design of the Mover for LMTT considering the Elastic Characteristic of the Linear Motor (리니어 모터의 전기적 특성을 고려한 LMTT용 이동체의 최적설계)

  • An T.W.;Han K.J.;Han D.S.;Lee S.W.;Lee K.M.;Lee J.M.
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • 2006.05a
    • /
    • pp.399-400
    • /
    • 2006
  • LMTT(Linear Motor based Transfer Technology) is a new type of transfer system used in the maritime container terminal fur the port automation, and largely consists of a controller, shuttle car, and rail. The shuttle car is divided into the frame part, the driving part, and wheels. In order to design this system, various researches on each part of it must be conducted. In this study, we dealt with the optimum design for the frame part of the shuttle car designed from previous studies on the strength of the frame with respect to the number of cross beams to minimize the weight of the shuttle car and to satisfy design criteria of cargo-handling systems in container terminal. For the optimization of the frame, thicknesses of each beam were adopted as design variables, the weight of the frame as objective function, and stress and deflection per unit length as constraint condition.

  • PDF

Design of the Impact Absorber used for a Shuttle Car for LMTT with respect to the Drop Height of a Container (컨테이너의 낙하높이에 따른 LMTT 용 Shuttle Car 의 충격흡수기 설계)

  • 한동섭;한근조;심재준;김태형
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • 2004.10a
    • /
    • pp.1479-1482
    • /
    • 2004
  • LMTT (Linear Motor-based Transfer Technology) is horizontal transfer system in the maritime container terminal for the port automation. The system is driven by PMLSM (Permanent Magnetic Linear Synchronous Motor) that is consists of stator modules on the rail and shuttle car. This paper investigates the effect of the drop height of container on impact reaction force of the Impact Absorber (IA) in shuttle car for LMTT. The results of this investigation are obtained from detailed finite element analysis for various parameters, such as the spring coefficient, the drop height of container.

  • PDF

Optimum Design for the Frame of the Shuttle Car for LMTT to transfer a Container (컨테이너 이송을 위한 LMTT용 셔틀 카의 프레임 치수최적설계)

  • Han, Dong-Seop;Han, Geun-Jo;Lee, Kwon-Hee;Shim, Jae-Joon;Lee, Seong-Wook
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • v.29 no.1
    • /
    • pp.429-432
    • /
    • 2005
  • LMTT(Linear Motor based Transfer Technology) is a new type of transfer system used in the maritime container terminal for the port automation, and largely consists of a controller, shuttle car, and rail. The shuttle car is divided into the frame part, the driving part, and wheels. In order to design this system, various researched on each part of it must be conducted. In this study, we dealt with the optimum design for the frame part of the shuttle car designed from previous studies on the strength of the frame with respect to the number of cross beams to minimize the weight of the shuttle car and to satisfy design criteria of cargo-handling systems in container terminal. For the optimization of the frame, thicknesses of each beam were adopted as design variables, the weight of the frame as objective function, and stress and deflection per unit length as constraint conditions.

  • PDF

Design of Mover for LMTT based on Capstone Design (창의공학설계를 기반으로 한 LMTT용 이동체의 설계)

  • Han, Dong-Seop;An, Tae-Won;Lee, Seong-Wook;Han, Geun-Jo
    • Journal of the Korean Society of Manufacturing Process Engineers
    • /
    • v.6 no.3
    • /
    • pp.47-52
    • /
    • 2007
  • LMTT (Linear Motor based Transfer Technology), which is a new type transfer system used in the maritime container terminal for the port automation, is driven by PM LSM (Permanent Magnetic Linear Synchronous Motor), and largely consists of a controller, shuttle car, and rail. The shuttle car is divided into the frame part, the driving part, and wheels. Because the shuttle car is supported by four wheels in opposition to have five times length for the width of it, a larger deflection than other transfer system using the linear motor occurs. This deflection changes the gap between the mover and the stator, and then brings on an ununiform thrust force. So in this study, we dealt with the structural design for the mover of the shuttle car to generate the uniform thrust force for the efficient control of it. For the investigation, the thickness for each beam of the mover was adopted as design variables, the weight of the mover as objective function, and stress and deflection of the mover as constraint condition.

  • PDF

Optimal Design of the Mover Considering the Electrical Characteristic of Linear Motor

  • Lee, Jung-Myung;Han, Dong-Seop;Lee, Seong-Wook;An, Tae-Won;Han, Geun-Jo
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • v.2
    • /
    • pp.321-324
    • /
    • 2006
  • LMTT(Linear Motor based Transfer Technology) is a new type of transfer system used in the maritime container terminal for the port automation, and largely consists of a controller, shuttle car, and rail. The shuttle car is divided into the frame part, the driving part, and wheels. In order to design this system, various researches on each part of it must be conducted. In this study, we dealt with the optimum design for the mover of the shuttle car designed from previous studies on the strength of the frame with respect to the number of cross beams to minimize the weight of the shuttle car and to satisfy design criteria of cargo-handling systems in container terminal. For the optimization of the mover, thicknesses of each beam were adopted as design variables, the weight of the frame as objective function, and stress and deflection per unit length as constraint condition.

  • PDF

The Effect of Cross Beam on the strength and Stiffness of the Frame in Shuttle Car for LMIT (LMTT용 Suhttle Car의 Frame 강도 및 강성에 미치는 Cross Beam의 영향)

  • Lim J. H.;Han G. J.;Lee K. S.;Han D. S.;Shim J. J.;Lee S. W.;Jeon Y. H.
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • 2004.11a
    • /
    • pp.323-328
    • /
    • 2004
  • According as the quantity of goods transported by ship is increasing about $7\%$ per year, a port environment is rapidly changing. To meet this situation successfully, the development of the next generation port loading and unloading system (LMTT) is studied. A Frame of shuttle car for LMTT(Linear Motor-based Transfer Technology) consist of three parts which are outer beam inner beam and cross boom. Outer boom supports a container and inner boom is a framework and cross boom reinforces outer and inner boom. In this study, we carried out the finite element analysis for the effect of cross boom on the strength and stiffness qf the frame according to the number if cross beam leading position of container, the distance ratio if inner boom from center.

  • PDF

DThe Effect of Thickness Ratio and Hight Ratio of Inner Beam on Strength and Stiffness of Frame in Shuttle Car for LMTT (Inner Beam의 두께비 및 높이비가 LMTT용 Shuttle Car의 Frame 강도 및 강성에 미치는 영향)

  • Han, GD.S.;Han, G.J.;Lee, K.S.;Shim, J.J.;Kim, T.H.
    • Journal of Navigation and Port Research
    • /
    • v.28 no.3
    • /
    • pp.207-211
    • /
    • 2004
  • The final goal of this research is to establish the relative dangerousness D/B for factors on seakeeping performance. This D/B is essential to develope the seakeeping performance evaluation system built-on-ship. The system is composed of the apparatus for measuring a vertical acceleration to be generated by the ship's motions, computer for calculating the synthetic seakeeping performance index and monitor for displaying the evaluating diagram of navigational safety of ship. In this paper, a methodology on the establishment of the relative dangerousness D/B for factors on seakeeping performance is presented by a numerical simulations, playing an important role on the algorithm of the program for calculating the synthetic seakeeping performance index. Finally, It is investigated whether the relative dangerousness D/B can be realized an accurate values according to the loading conditions, weather conditions, wave directions end present ship's speed of a model ship.

The Effect of Cross Beam on the strength and Stiffness of the Frame in Shuttle Car for LMTT (LMTT용 셔틀 카의 프레임 강도 및 강성에 미치는 크로스 빔의 영향)

  • Lim J. H.;Han G. J.;Lee K. S.;Han D. S.;Shim J. J.;Lee S. W.;Jeon Y. H.
    • Journal of Navigation and Port Research
    • /
    • v.29 no.1 s.97
    • /
    • pp.77-82
    • /
    • 2005
  • According as the quantity of goods transported by ship is increasing, a port environment is rapidly changing To meet this situation successfully, the development of the next generation port loading and unloading system(LMTT) is studied A Frame of shuttle car for LMTT(Linear Motor-based Transfer Technology) consists of three parts which are outer beam, inner beam and cross beam In this study, we carried out the finite element analysis for the effect of cross beam on the strength and stiffness of the frame according to the number of cross beam, loading position of container, the distance ratio of inner beam from center. The result is as follow ; When the load is applied on outer beam and inner beam concurrently and the number of cross beam is 5, that is the optimum condition in frame design.

Structural Optimization for LMTT-mover of a Crane (크레인 LMTT용 이동체의 구조최적설계)

  • Lee K.-H.;Min K. A.;PARK H. W.;Han D. S.;Han G. J.
    • Journal of Navigation and Port Research
    • /
    • v.29 no.5 s.101
    • /
    • pp.415-420
    • /
    • 2005
  • LMTT (Linear Motor-based Transfer Technology) is the horizontal transfer system for yard automation, which has been proposed to take the place of AGV (Automated Guided Vehicle) in the maritime container terminal. The system is based on PMLSM (Permanent Magnetic Linear Synchronous Motor) that consists of stator modules on the rail and shuttle car. It is desirable to reduce the weight of LMTT in order to control the electronic devices with minimum energy. In this research, structural optimization for a mover of shuttle car is performed to minimize the weight satisfying design criteria. The objective function is set up as weight. On the contrary, the design variables are transverse, longitudinal and wheel beams' thicknesses and its height, and the constraints are considered as strength and stiffness.