THE FORCE ANALYSIS OF THE CATERPILLAR EXCAVATOR STICK ARRANGEMENT MECHANISM WITH THREE DEGREES OF FREEDOM

The article presents the procedure of the force analysis of a mechanism in terms of the stick arrangement mechanism with three degrees of freedom for a caterpillar excavator. The force analysis of any mechanism is preceded by the structural analysis to divide the mechanism into a driving member, or driving members depending on the mechanism motion freedom W, and structural groups. Then, the kinematic analysis of the mechanism is performed to determine the kinematic parameters of all links for the further estimation of the inertia forces or inertia moments of the links. Weights and inertia moments of the links, external loads applied to the mechanism and all geometric dimensions of the links should be determined beforehand.

The objective of the force analysis of a mechanism is the determination of back actions in kinematic pairs, as well as balancing forces or balancing moments. The data on the forces in kinematic pairs are required to calculate strength, rigidity, vibration resistance and wearability of the mechanism, endurance of bearing groups and for the other design calculations.

The force analysis of mechanisms uses the kinetostatics method that allows solving complex dynamic problems using simple equations of statics.

Keywords

Force analysis, inertia force, structural analysis, balancing moment, structural group, caterpillar excavator, driving member of mechanism.

Issue number: 1
Year: 2018
ISBN:
UDK: 622.233.5.051.78.0015
DOI: 10.25018/0236-1493-2018-1-0-133-142
Authors: Busygin A. M.

About authors: Busygin A.M., Candidate of Technical Sciences, Assistant Professor, e-mail: Busy9@rambler.ru, Institute of Ecotechnology and Engineering, National University of Science and Technology «MISiS», 119049, Moscow, Russia.

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