The Effect of Impact Absorbing System with 2 DOF Deformation According to the Variation of Cylinder Wall on Damping Coefficient

Han, Geun-Jo; Ahn, Chan-Woo; Ahn, Sung-Chan; Shim, Jae-Joon; Kim, Sung-Youn

Journal of Navigation and Port Research 2002;26(1):101-105.
Published online March 31, 2002.

실린더 벽면 변화가 2자유도계 충격흡수장치의 감쇠계수에 미치는 영향

한근조, 안찬우, 안성찬, 심재준, 김성윤

The Effect of Impact Absorbing System with 2 DOF Deformation According to the Variation of Cylinder Wall on Damping Coefficient

Geun-Jo Han, Chan-Woo Ahn, Sung-Chan Ahn, Jae-Joon Shim, Sung-Youn Kim

Abstract

Many malfunctions take place in container crane spreader due to impact. So we designed a 2 DOF hydraulic impact absorbing equipment to absorb the impact and we studied the change of damping coefficient with respect to the variation of dimensions of oil-cylinder wall. When we design the dimension of hydraulic cylinder wall considering the displacement on the wall, the value of it over 20㎜ didn’t affect the damping coefficient.

Key Words: Container crane spreader;2 DOF impact absorbing system;Damping coefficient;Hydraulic cylinder