Підвищення експлуатаційних характеристик пневмоагрегатів ударної дії шляхом вибору їх раціональної стуруктури і параметрів

Abstract

Thesis for competition of scientific degree of candidate's of technical science on speciality 05.05.17 - hydraulic machines and hydropneumatic units. National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2012. The thesis is devoted to solving scientific and practical problem improve the performance of Pneumatic shock through research workflow and create them on this basis parametric methods of analysis and synthesis of these units. A new concept of control Pneumatic shock, based on the synchronization of stroke and pulsed pneumatic cylinder that provides power management control circuit with three levels of pressure. The universal nonlinear simulation model as well as dimensional and dimensionless forms of dynamic form the main criteria of similarity. When creating a linear model used new approaches which consist in replacing nonlinear dependencies January rational selection and construction is extremely compact Pneumatic shock simulation model based on equilibrium equation as a mechanical analogue kind-viscosity elastic models of Maxwell. The study defined the parameters of these models Pneumatic and conditions of operation that ensure the most effective implementation of the efficiency of compressed air in shock operations. The proposed engineering method of calculating kinematic, dynamic and energy characteristics Pneumatic shock based on solving problems as dynamic analysis and synthesis of dynamic problems.