• 한국수산과학회지
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• 제37권4호
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• pp.330-336
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• 2004

To meet the increasing demand from various fishing fields for training of fishing equipment operators, a fishing winch simulator was designed to train maritime students in the correct and safe operation of hydraulic winches under various load conditions related to fishing operations. The aim of this study is to describe the basic dynamic characteristics of the newly developed hydraulic fishing winch simulator and particularly to analyze the mechanical responses produced on the winch operation controls. The winch simulator consists of two winch units, a computer control and data acquisition system, a control consol and other associated mechanisms. When one winch is in hauling mode, the other one will always be in loading mode. The revolution speed of the hauling winch was controlled by a proportional directional control valve, and the braking torque of the loading winch was controlled by a proportional pressure control valve. The simulation experiments indicated that the dynamic characteristics of the hauling winch followed the braking response characteristics of the loading winch. The tests also showed that the warp speed and tension linearly depend on the pressure differential across the motor of the loading winch controlled by operating the proportional pressure control valve during the hauling operation. The experience gained from various training courses showed that the fishing winch simulator was very realistic and it was valuable for training novice winch operators. The results of the winch simulation exercise were recorded and used to evaluate the training on the operation and handling of the winch system. From these test results, we concluded that the tension acting on the warp during hauling operations can successfully be simulated by controlling the pressure differential across the motor with step changes of the control input signal to the proportional pressure control valve of the loading winch.

• 제어로봇시스템학회논문지
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• 제5권4호
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• pp.489-495
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• 1999

This paper contains the design specification and detail design for a towing winch system. We analyze operating condition of the system and decide the design specification for the winch system, and also perform a detail design for the subsystem such as hydraulic winch system, control equipment and power supplier at the full scale development. The performance of designed towing winch is established by load tests and sea trial tests.

• 한국군사과학기술학회지
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• 제3권1호
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• pp.47-57
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• 2000

This paper contains the design specification and detail design for a seaborne towing winch system. We analyze operating condition of the system and decide the design specification for the towing winch system, and also perform a detail design for the subsystem such as hydraulic winch system, control equipment and power supplier at the full scale development. The performance of designed towing winch is established by load tests and sea trial tests.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2010년도 춘계학술대회 논문집
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• pp.1303-1304
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• 2010

• 드라이브 ㆍ 컨트롤
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• 제10권4호
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• pp.14-21
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• 2013

The numerical analysis of the automatic ship mooring system which was equipped in the ship for trying to berth at the pier was performed in this study. The automatic ship mooring using hydraulic winch was a new method that had not need to change the existing devices and to help a pilot ship of outside. The numerical results of the proposed mooring system including ship motion were that the speed and rolling phenomenon of ship was affected by changing in the ship weight and affected the slope maintenance and yaw degree of ship if there has a trim of stern. Also, a static force of ship at the initial movement was important to calculate the mooring power. The moving force and inertial force of ship on the vertical direction was confirmed for the mooring stability. Therefore, the power and velocity of hydraulic mooring winch should be determined by considering the significant characteristics such as weight, velocity, inertial force and moving force of ship.

• 대한조선학회논문집
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• 제57권5호
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• pp.254-261
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• 2020

The structural safety of hydraulic winch drum and the gears are estimated by the Finite Element Analysis (FEA) and the winch operation experiment. The mesh convergence test is performed and the applied force is the pressure on the drum converted from the rope tension in working condition. The stress of the drum calculated from the strain values of the winch operation experiment shows the agreement with that from the FEA. Most stress values are under the yield strength except for the small hole made for the wire rope fixation. The life of bearings in the drum is calculated using the life prediction formula with the reaction forces from the operation load. One of the two ball bearings shows the short life for impact condition, yet the real prototype winch system shows more life than the numerical value.

• 한국기계가공학회지
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• 제19권10호
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• pp.31-35
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• 2020

Hydraulic winches for transportation and logistics in the shipbuilding and marine plant fields require multi-stage planetary gear modules with high gear ratios. Due to environmental conditions in the ship, durability is crucial. Further, we are currently relying on foreign products. The development of domestic technology will reduce cost, save time, and improve the export market. Thus, we developed a multi-stage planetary gear module for a hydraulic winch and evaluated its performance through several tests of the hydraulic brake torque, maximum torque, and load endurance.

• 대한토목학회논문집
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• 제30권4A호
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• pp.337-342
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• 2010

일반적으로 하천 시설에 사용되는 수문은 기계식 및 유압식, 혼합식 권양기에 의하여 개폐되며, 구조물의 크기 및 구조상 2개 이상의 인양장치로 동조를 이루며 안전하게 개폐되어야 한다. 수문의 개폐 시 설계상 정확히 고려할 수 없는 수압 및 마찰로 인하여 구조물에 추가적인 하중이 발생하게 된다. 이러한 추가적인 하중은 수문의 끼임 현상 및 권양기의 과부하 등을 초래하고, 이는 수문의 안전에 중대한 영향을 미치게 된다. 본 논문에서는 이러한 수문의 개폐 시 발생하는 불안전한 요소에 대응하여 권양기가 동조를 이룰 수 있도록 유압 및 변위를 동시에 고려한 FDC(Force-Displacement Control)시스템을 설계하였다. 설계된 FDC 시스템을 XG5000프로그램의 PID 기능을 이용하여 구현하였으며, 다중 유압 실린더 수문 권양기(winch) 모형을 제작하여 FDC 시스템을 실험적으로 검증하였다. 실험 결과 개발한 FDC 시스템은 수문의 개폐 시 발생하는 다양한 외부하중에 대응하여, 다중 유압 실린더로 이루어진 수문 권양기가 동조를 이루며 개폐됨을 확인하였다. 실험 결과로부터 FDC 시스템은 수문 권양기에 적용시 효과적임을 확인 하였다.

• 한국정밀공학회지
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• 제14권9호
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• pp.15-21
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• 1997

In this paper, a self-activated cable spooling system for seaborne winch is developed . The system consists of a hydraulic servo driving unit and a cable position measurement mechanism. To realize the cable spooling system, it is carried out the mathematical modelling of the system and designed the proportional controller through the system aalysis and the simulation. The cable spooling system is tested and evaluated to validate the performance of the controller. The test results shows a good traceability of the cable spooling system under disturbance of cable tension.

• 한국생산제조학회지
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• 제26권2호
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• pp.214-222
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• 2017

Maritime deck machinery relies heavily on the importation of components produced by overseas companies. Our research defines design parameters for hydraulic winch regulators used in maritime deck machinery. Using Amesim, we were able to conduct 1D modeling, and utilizing CFS then enabled us to create 3D models. These models were analyzed in our research for changes in pressure on each port that resulted from the regulator's spring constant and changes in the primary tension-compression field. Our research then analyzed alterations in traits caused by changes in the length of overlap between the spool and sleeve. Last but not least, our research analyzed the trait alteration resulting from changing the interval between the spool and sleeve. We believe the results of our research can be used to design a hydraulic winch regulator used in maritime deck machinery that does not require importation.