Design method for gaps of main and auxiliary springs of high-strength first-level gradual-change-rigidity leaf spring

Abstract

The invention relates to a design method for gaps of main and auxiliary springs of a high-strength first-level gradual-change-rigidity leaf spring and belongs to the technical field of suspension steel plate springs. According to the design method, the gaps of the main and auxiliary springs of the high-strength first-level gradual-change-rigidity leaf spring can be designed according to design requirement values of a main spring structure parameter, the first-piece auxiliary spring length, the elastic modulus, the main spring intensifying rigidity, the main and auxiliary spring composite intensifying rigidity, a contact load, a rated load and the remaining tangent line arc height under the rated load. It can be seen that from a model machine loading test, the design method for the gaps of the main and auxiliary springs of the high-strength first-level gradual-change-rigidity leaf spring is right, accurate and reliable design values of the gaps of the main and auxiliary springs can be obtained, and a reliable technical basis is laid for design of the high-strength first-level gradual-change-rigidity leaf spring and CAD software development. By means of the method, the product design level, quality and performance and the vehicle running smoothness can be improved; and meanwhile, the product designing and experiment testing cost is reduced, and the product development speed is increased.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a design method for a primary and secondary spring gap of a high-strength one-stage gradually changing rigidity leaf spring. Background technique [0002] With the emergence of high-strength steel plate materials, high-strength one-level gradient stiffness leaf springs can be used to meet the design requirements of vehicle ride comfort and suspension gradient bias frequency under different loads. Among them, high-strength level one The gap between the main and auxiliary springs of the leaf spring with gradual stiffness not only affects the initial contact load and the full contact load, but also affects the gradual compound clamping stiffness of the main and auxiliary springs and the ride comfort of the vehicle. However, since the calculation of the deflection of the high-strength one-stage gradually changing stiffness leaf spring is very complicated during the gradual contact ...

AI Technical Summary

Problems solved by technology

However, since the calculation of the deflection of the high-strength one-stage gradually changing stiffness leaf spring is very complicated during the gradual contact process of the main and auxiliary springs, it can be seen from the research data that the main and auxiliary springs of the high-strength one-stage gradually changing stiffness leaf spring have not been given before at home and abroad. Spring clearance design method

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