• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2003.05a
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• pp.327-332
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• 2003

고층빌딩공사에서 설치·사용하는 리프트는 근로자의 수직이동과 건설자재의 수직운반에 이용하는 편리한 건설장비이다. 리프트를 이용하는 근로자들은 리프트 탑승 대기장 및 그 주변작업에 투입되는 근로자는 탑승을 위한 리프트의 호출, 주변작업, 탑승을 위한 대기과정에서 추락·협착·충돌 등의 재해가 발생할 위험성이 잠재하고 있으며, 실제 많은 재해가 발생하고 있어 동종재해를 방지할 필요가 있다. 그러나, 본 연구에서는 리프트의 기계적 장치나 전기적 장치에 의한 연동설비는 제외한다.(중략)

• Korean Journal of Construction Engineering and Management
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• v.13 no.2
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• pp.110-119
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• 2012

The Plan and equipment of vertical lifting are very important in high-rise building construction site, and unmanned lifts usage is increasing for financial and efficient reason. However if lift stop position error occur, It can be accumulated. And the lift can not be available during an engineer fix the problem. So loss of time and cost will occur when lifts have problems. This paper reports an improved lift stop position sensing device for preventing loss of time and cost from lift stop position error. The result of tests showed that the system has a correction function of lift stop position error, and the accuracy of device which was developed in this paper was about 9.75mm better than existing equipment.

• Proceedings of KOSOMES biannual meeting
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• 2017.04a
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• pp.248-248
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• 2017

• Journal of the Korean Society of Marine Environment & Safety
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• v.24 no.6
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• pp.654-661
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• 2018

This paper analyzes the type of facilities and equipment of the marina port and analyzes its lift facilities (lift pier) and equipment (marine mobile lift). It set up the lift facilities and equipment standards. Depending on the gross tonnage of vessels in operation in Korea, the required inner width of lift piers is 5.50 m for 35-ton vessels, and 6.20 m for 50-ton vessels. The inside width of the marine mobile lift is 6.10 m for 35-ton vessels, and 6.80 m for 50-ton vessels. There are two places where the target ship can be lifted from the lift pier installed on the domestic marina, and other marinas' lift piers inner widths are insufficient by about 0.35 ~ 0.50 m. Among the marine mobile lifts in operation, there were two apparatuses that secured the inside width necessary to lift the target vessel. Other marine mobile lifts' inner widths are insufficient by about 0.3 ~ 0.6 m.

• Korean Journal of Construction Engineering and Management
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• v.14 no.5
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• pp.153-163
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• 2013

As recent buildings have been more higher and larger, construction vertical lifting planning and operation is a key factor for successful project in tall building. Although many studies have been trying to set up a construction lifting planning system at early stage, there's not existing a control real-time lift operation control system with respect to during construction stage. Therefore, In this study, we use the sensor device to collect the lift operating data for improvement of lift operation efficiency and develope optimum lift operating system which can perform real-time analysis. Finally, we verify the efficiency of proposed system through comparison between realtime operating data and simulated data using proposing system. In this paper, the proposed system show more efficient moving line compared with previous system. This can contribute to development of unmanned lift system.

• Journal of the Korea Convergence Society
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• v.6 no.5
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• pp.49-54
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• 2015

Nowadays, one lift among the fundamental equipments at auto-repair must withstand the heavy weight of car. Therefore, the strong lift which is easy to make repairs on cars is the indispensible equipment. In this study, three kinds of lifts are modelled and the simulation analysis is carried out with the finite element analysis program of ANSYS. The durability of lifts due to each configuration can be estimated on the background of this study result and the data to be contributed to the development of new lift for car with safety and durability can be accumulated ultimately. And it is possible to be grafted onto the convergence technique at design and show the esthetic sense.

• Korean Journal of Construction Engineering and Management
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• v.16 no.3
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• pp.68-77
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• 2015

One of recent concerns for super-tall buildings is how to manage hoisting plans and equipment efficiently. Disasters are frequently occurred in relation to electromotive hoists and cranes which are commonly used in construction sites. For construction lifts, particularly, it is highly important to conduct regular inspections or prepare against breakdown in terms of safety. However, unfortunately the reality is that regular inspections are only flatly conducted according to operating hours only. A lift, whose life span is subject to the complicated considerations such as operating hours, loading condition, and the like of each component, is far too invalid as a means of maintenance. As a way to resolve this problem and improve its convenience and safety for users, this study intends to calculate individual inspection interval for the main components of lifts by measuring their actual operating hours with sensing technology and analyzing their historical data. The findings of study include calculation of inspection intervals for the main components of lifts and classification of components to check by the actual operating hours of lift (40, 90, 130, 400 hours), which are drawn up into tables. This will make an opportunity to suggest efficient maintenance measures by enabling prevention of safety accidents and enhancement of safety for workers. Also, it will lead to increasing productivity of works by eliminating sources of delaying the term due to the breakdown of lifts.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2003.05a
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• pp.283-288
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• 2003

건설용 리프트는 아파트 건설 현장에서 없어서는 안될 필수 장비의 하나로 인식되고 있다. 건설경기의 부침에 따라 차이가 있기는 하나 우리나라에는 11,000여대의 리프트가 사용되고 있는 것으로 추정된다. 리프트는 사람이 탑승하거나 하물을 운반하는데 사용되고 있으며 산업안전보건법상의 유해·위험기계기구로 규정되어 법정검사를 받고 있다.

• Korean Journal of Construction Engineering and Management
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• v.12 no.6
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• pp.120-129
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• 2011

An installation of the construction lift has a few limitations by many constrains and these have influences on labor productivity, that can be changed by vertical-transportation management. In the super-tall building construction, a management of construction lift operation is one of the most important factor, but existing methodologies depend on skilled practitioners' experiences. And it is true that the expertise resulted by the experiences does not transfer to the next generation. This study is a part of lifting-management simulation development which aims at the optimal construction lift management. A proposed algorithm is focus on lifting time calculation considering an acceleration capability. This research evaluates the result accuracy using comparative analysis on simulation result and field measuring time.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.962-963
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• 2008

본 논문에서는 상하방향의 추진력을 필요로 하는 클린룸용 리프트 시스템의 구동원으로 고출력 선형전동기 적용에 관한 연구를 진행하였다. 기존의 리프트 시스템은 회전형 전동기와 부가적인 동력전달장치를 이용하여 동력을 전달하는 간접구동방식으로, 선형전동기를 적용한 직접구동방식에 비해 구조적으로 복잡하며, 클린룸내에서 청정도에 영향을 주는 분진발생이 상대적으로 많아진다. 선형전동기를 리프트 시스템에 적용함으로써 시스템의 컴팩트화, 구동속도 향상, 그리고 신뢰성 향상을 통한 성능개선이 가능하다. 본 연구에서는 실제 제작한 리프트 실험장치를 통하여 선형전동기의 구동성능을 분석하고, 제안한 리프트 시스템의 타당성을 검증한다.