Obosnovanie principov usovershenstvovanija uprugih ustrojstv

Abstract

Amortization hanger occupy a very significant proportion in the mass balance of modern vehicles, comprising 8…12% of the total curb weight. Their reliability and durability determine the operational reliability and efficiency of vehicle use, and the elastic characteristics of the hanger significantly affect the comfort of using the vehicle and the road speed conditions that are acceptable for road conditions.All this is especially important for cars, regardless of their type. Most modern trucks use elastic devices in their hanger cushions, made in the form of packages of multi-sheet springs. Such springs are very material-intensive and labor-intensive in manufacturing.Great opportunities in reducing the material consumption of amortization pendants, reducing the labor intensity of their manufacture and especially the assembly opens with the use of a new type of elastic devices − the bracket-shaped leaf springs (BLS), proposed at the Kiev National University of Construction and Architecture.The purpose of this work is to investigate the possibility of improving the elastic hanger of the car's cabin by using clamp-shaped leaf springs. The task of the study is to develop recommendations for improving this hanger and to test experimentally the feasibility of implementing the formulated recommendations.The advantages of using a new type of elastic suspension are substantiated, which consist in the fullest use of the bearing capacity of the material, constructive simplicity and the smallest mass.These conditions are met by a patented, bracket-shaped leaf spring, designed as a beam of equal resistance. The advantages lie in the fact that in each working section the bending occurs in the plane of its greatest rigidity, the deformation along the line of action of the external force is sufficient to absorb the given energy, and the maximum equivalent stress in each working section is equal to or close to the allowable one.