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

가혹하중이 작용하는 경우의 굴삭기 연결부의 반력계산

Kim, Oe-Jo;Yu, Wan-Seok;Yun, Kyeong-Hwa;Gang, Ha-Geun
김외조;유완석;윤경화;강하근

  • Published : 1996.04.01

Abstract

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.

Keywords

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