• Title/Summary/Keyword: Concrete Pump Truck

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Implement Semi-Product Commonization Design for Reduction of Inventory : Focusing on Concrete Pump Truck Frame Assemble Process (펌프카 재고 감축을 위한 반제품 공용화 설계 구현 : H사(社) 펌프카 프레임 조립 공정 중심으로)

  • Kim, Kyung-Hun;Park, Chan-Woong
    • Journal of the Society of Korea Industrial and Systems Engineering
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    • v.43 no.4
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    • pp.142-149
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    • 2020
  • A manufacturing company should produce its products and make a profit to continue its management. With the adoption of a multi-category small-volume production system, manufacturers that produce concrete pump-cine products are carrying out improvement activities to increase their market share amid the business-to-customer business environment. However, the slump in the construction investment environment has led to a decline in sales of concrete pump trucks. The purpose of holding inventory is to prevent loss of sales opportunities with the rate of change in the sales plan, and reducing the rate of change in the product can reduce unnecessary inventory and, in order to realize this, the goal of reducing inventory can be achieved by reviewing the parts that can be designed for common use. Therefore, to reduce the inventory of concrete pump trucks, semi-finished publicization design is necessary. According to the analysis, the frame assembly process of the 32M model is common. Production capacity can be secured without loss of sales opportunity.

Development of a Concrete Pump Truck's Core Pump Model and Its Validation (콘크리트 펌프트럭의 코어펌프 해석모델개발 및 신뢰성 검토)

  • Park, Sung Su;Noh, Dae Kyung;Lee, Geun Ho;Lee, Dae Hee;Jang, Ju Sup
    • Journal of Drive and Control
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    • v.15 no.2
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    • pp.1-8
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    • 2018
  • This study is a first step toward reducing surge pressure, and it has another purpose, which is to developing an analysis model which can closely analyze a hydraulic circuit and be used in design. For development of analysis model, SimulationX, a commercial program, is used. The study progress methods are as follows. By analyzing the structure and operating mechanisms of each part of the hydraulic system of the pump truck and referring its parameters, develop a single component model. Assemble the developed single component model, and make an overall analysis the model. By comparing the similarities between the developed model and the actual system's test results, validate the reliability of the analysis model.

Development of a New Process for Welding a WC Layer to the Round Surface of a Plain Carbon Steel (초경접합 신공법 개발)

  • 박우진;김기열;이범주;조정환;박채규
    • Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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    • 1999.11a
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    • pp.257-262
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    • 1999
  • The economic loss arisen from the abrasion wear have been increasing at every industrial field. To reduce the economic loss we developed a new process, which is named MAHa process(Metallic Adhesives for HArdening). MAHa process is a process to weld tungsten carbide(WC) to the surface of a plain carbon steel so that it may stay longer under the severe abrasive environment. The depth of the WC layer ranges from 0.5 mm to 5 m. Compared with the conventional technology, arc-augmented welding which bonds WC on the flat surface only, MAHa process has the merits that it can make a robust WC layer on the round or wave- shaped surface also. How to turn the WC powder into a flexible mat is the key technology of the MAHa process. We invented new polymer materials to accomplish such a goal and both the MAHa process and the invented materials were applied for patents. For the application, the inner wall of elbow of Concrete Pump Truck(CPT) was maharized(MAHa process-treated) and the new WC layer on the inner wall was made successfully. The elbow was equipped to a CPT.

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