Design of 2-bar and 4-bar Parallelogram Mechanism with Load Adjusting Ability
Date Issued
2011
Date
2011
Author(s)
Wang, Po-Chen
Abstract
ABSTRACT
The design of 2-bar and 4-bar parallelogram mechanism with load adjusting ability is presented. A mechanism which sustains the load, and compensates the effect of gravity is called “Gravity Equilibrator”. A gravity equilibrator can be moved in corresponding to the direction of gravity effortlessly and achieve static balance in any position at the same time. The design in this paper is therefore based on the 2-bar and 4-bar parallelogram mechanisms which compensate variable load of the mechanism.
Through employing the methodology of conservation of potential energy, and by analyzing the variation of potential energy of 2-bar mechanism while the load and the angle between bars are varied, the spring potential energy can thus be obtained. The installation of springs on 2-bar mechanism can thus be gained by the spring potential energy. Since the 4-bar parallelogram mechanism is similar to the 2-bar mechanism, the spring installation on the 2-bar can then also be applied to the 4-bar parallelogram mechanism.
Subjects
2-bar
4-bar parallelogram
gravity balance
static balance
load variable
Type
thesis
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