Abstract
This paper aims at the problems of traditional compound pendulum jaw crusher including unreasonable structure design, heavy weight, low utilization of material and high cost, chooses moving jaw which is the key part of motion mechanism as the optimal design subject, uses finite element method, through statics analysis, obtains stress and displacement distribution of moving jaw that is under the action of maximum fracture force, realizes weak link and surplus part of primary structure. Based on the above-mentioned study, this article uses minimum weight of moving jaw as objective function, combines with structure characteristic of crusher, uses the ANSYS Parametric Design Language (APDL) to establish parameterization model, and combines with the optimal design module OPT, works out the minimum weight of moving jaw under the conditions of meeting intensity and stiffness. The result indicates that moving jaw is less than the original one by 27%, which saves material, reduces cost and weakens additional dynamic load that caused by inertial force of work mechanism, improves dynamics of mechanism to a cert extent, reduces the vibration of mechanism and the wear of part, and extends product service life.
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