Evaluation of Joint Reaction Forces for a Hydraulic Excavator Subjected to a Critical Load

가혹하중이 작용하는 경우의 굴삭기 연결부의 반력계산

  • 김외조 (부산대학교 대학원) ;
  • 유완석 (부산대학교 기계기술연구소) ;
  • 윤경화 (삼성중공업(주) 종합기술연구소) ;
  • 강하근 (삼성중공업(주) 종합기술연구소)
  • Published : 1996.04.01


This paper presents a three dimensional modeling and dynamic anlaysis of a hydraulic excavator. An excavator is composed of a ground, an under-frame, two idlers, two spockets, an upper-frame, a boom, an arm, a bucket two yokes, two connecting rods, two boom cylinders, an arm cylinder, and a bucket cylinder. Each cylinder is modeled with two separate bodies which are linked to each other by a translational joint. The three dimensioanl model of the excavator consists of 22 bodies and each body is assumed as rigid. This paper suggested the maximum lifting capability, a critical load and reaction forces at joints form the DADS simulation. It was presumed that the reaction forces due to a critical load are three times bigger than those due to the maximum lifting capacity.


Excavator;Multibody Dynamics;Under-Frame;Maximum Lifting Load;Critical Load