4WD 및 4WS이 가능한 로더 개발(Ⅱ) : 4륜 조향장치 및 로더 구성 4WS System and Construction Loader = Development of Loader Equipped with 4WD and 4WS(Ⅱ)

다국어 초록 (Multilingual Abstract)

In this study, the loader was completed that has the 4-wheel gear driven drivetrain of study (Ⅰ), the 4-wheel steering with power wheel type, all-wheel traction system, and joy-stick type lever for hydraulic control value. From driving test of the developed 4WD and 4WS type loader, we obtained that the minimum circling radius and the necessary width in circling motion reduced about 40% and 33% compared with 2WS type loader. Also, all-wheel traction system could keep the tires glued to the ground with greater stability, the ower steering allowed a smoother operation, and the joy-stick type lever offered easily to control. Thus, the developed loader having these functions was very fit in a small cattle shed or a rugged ground.