• Journal of the Korea Convergence Society
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• v.11 no.10
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• pp.219-224
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• 2020

Industrial mixers to homogeneously blend particulate materials have been developed and widely used in various industries. However, most industrial mixers have at most two-degree-of-freedom for the operation, which limits the range of operation parameter selection for optimal blending. This paper proposes a multi-degree-of-freedom robotic mixer designed by converging a conventional drum blender and a robotic manipulator and evaluated its performance in a virtual operating environment. Discrete element simulations were conducted for mixing performance evaluation. The numerical results showed that the proposed mixer design exhibits a better mixing performance than conventional ones.

• Magazine of the Korea Concrete Institute
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• v.14 no.4
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• pp.49-55
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• 2002

레미콘의 생산방식은 콘크리트의 비빔을 정치식 배치플랜트(stationary batch plant)내의 고정믹서로 행하는가, 아니면 운반장비인 트럭 믹서(truck mixer)의 드럼으로 행하는가에 따라서 일반적으로 센트럴믹스(central mix), 쉬링크믹스(shrink mix), 트럭 믹스의 3가지로 분류된다.(중략)

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1992.04a
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• pp.162-166
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• 1992

This paper presents a new control methology for improving conventional drum and chute components, which have been operated by workers with levers. In a system for clute operations using a hydraulic power unit as an actuator and also develsed a proportional-integral controller for drum operations using electrical power units.

• Journal of the Korean Society of Mechanical Technology
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• v.13 no.3
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• pp.65-71
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• 2011

The concrete mixer truck which is in charge of raw materials in civil engineering construction of the concrete loading, transport, placement, is used $6m^3$, $7m^3$ class in domestic(Korea). But in the case of the international construction fields are utilized $9m^3$ or above class because of the large-scale engineering and construction circumstances. In this paper, to develop a large $9m^3$ class mixer drum and the mixer drum in order to complement the technical and discharge that is responsible for stirring the blades by applying optimal design through implementation of the optimal shape of the concrete in the drum maintenance and placement of high-quality effects on increasing discharge such as advanced conventional drum mixer is to secure and differentiated technology. Large, heavy weight in development and uphold the drum mixer vehicle sub-frame is required to settle the design of the existing class mixer drum frames per $6m^3$ changed to account for changes in slope and length using CATIA V5 3D modeling work was performed.

• Journal of the Korean Society for Precision Engineering
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• v.10 no.2
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• pp.22-29
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• 1993

A remote control system was developed in order to operate by push-buttons the conventional drum and chute components, which have been operated manually, in a concrete mixer-truck. As actuators, a hydraulic power unit was used for chute operations: two DC motors for drum operations. The devised drum controller consisted of three electric circuits : an analog proportional-integral control circuit, a drum acceleration circuit, and an emergency stop circuit. The remote control system was installed to be tested experimentally and then was evaluated to work successfully with a desirable accuracy.

• Magazine of the Korea Concrete Institute
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• v.14 no.4
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• pp.40-48
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• 2002

콘크리트는 시멘트의 수화반응으로 시간이 경과하면 굳어지게 되는 물질이다 따라서 레미콘 생산시 기기 및 장비 등에 고착된 콘크리트는 가수 혼합 등으로 분해가 불가능하므로 일단 콘크리트의 제조 및 운반작업이 종료된 후에는 즉시 세척하여야만 한다. 특히 레미콘 생산 현장에서와 같이 대량의 콘크리트를 제조할 경우에 있어, 일단의 콘크리트가 생산완료된 후 레미콘 트럭의 드럼내ㆍ외부 및 배치플랜트의 믹서ㆍ호퍼 등의 세척은 후속콘크리트 제조시 배합비의 정밀을 기하거나, 장비의 보존을 위하여 반드시 필요하게 되는데, 이때 발생하는 세척배수에서 골재를 제거한 것을 회수수라 한다.(중략)