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Design method for working load of non-end-contact parabolic leaf spring auxiliary spring

A parabolic, non-end technology, used in the field of vehicle suspension leaf springs, can solve the problems of complex contact types, difficult analysis and calculation, etc.

Inactive Publication Date: 2019-03-26
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex structure and contact type of the non-end contact type parabolic leaf spring, it is very difficult to analyze and calculate it. According to the research data, there has been no reliable non-end contact parabolic leaf spring at home and abroad. Design method of active load of type leaf spring and auxiliary spring

Method used

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  • Design method for working load of non-end-contact parabolic leaf spring auxiliary spring
  • Design method for working load of non-end-contact parabolic leaf spring auxiliary spring
  • Design method for working load of non-end-contact parabolic leaf spring auxiliary spring

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Embodiment

[0063] Embodiment: the single-wheel no-load sprung mass m of certain vehicle e =163.26kg, single wheel fully loaded sprung mass m f =620.40kg, the non-end contact type parabolic leaf spring is composed of 2 main springs and 1 auxiliary spring, that is, the number of main reeds is m=2, and the number of auxiliary reeds is n=1. The spring parameters are: half length L M =575mm, width b=60mm, thickness h of the straight section at the root 2M =11mm, half of the installation distance l 3 =55mm, the distance l from the root of the parabola segment to the end point of the main spring 2M =L M -l 3 =520mm, modulus of elasticity E=200GPa, thickness h of the straight section at the end of the first main spring 1M1 =7mm, the thickness ratio of the parabola segment β 1 = h 1M1 / h 2M =0.64, the thickness h of the straight section at the end of the second main spring 1M2 =6mm, the thickness ratio of the parabola segment β 2 = h 1M2 / h 2M =0.55; the auxiliary spring parameter is...

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Abstract

The invention relates to a method for designing the working load of a non-end contact type parabolic leaf spring secondary spring, and belongs to the technical field of suspension leaf springs. According to the vehicle mass parameters, the structural parameters of each leaf spring, the elastic modulus, and the maximum allowable safety stress, the invention can design the starting load of the auxiliary spring of the non-end contact parabolic leaf spring. Through the prototype loading deformation test, it can be seen that the non-end contact parabolic leaf spring secondary spring working load design method provided by the present invention is correct, and the accurate and reliable secondary spring starting working load design value can be obtained, which is the non-terminal The design of the external contact type parabolic primary and secondary springs and the development of CAD software have laid a reliable technical foundation. The method can improve the product design level, quality and performance, and the ride comfort of the vehicle, and at the same time, reduce the cost of product design and test and test, and accelerate the speed of product development.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a non-end contact parabolic leaf spring secondary spring working load design method. Background technique [0002] With the rapid development of energy saving, comfort, light weight and safety of automobiles, leaf springs with variable cross-sections have light weight, high material utilization, no friction or small friction between sheets, low vibration and noise, and long service life. Advantages, it is increasingly concerned by vehicle suspension experts, manufacturers and vehicle manufacturers, and has been widely used in vehicle suspension systems. Usually, in order to meet the design requirements of processing technology, stress intensity, stiffness and lug thickness, a small number of variable cross-section leaf springs are processed into parabolic, oblique, root reinforced, end reinforced, and both ends reinforced types. The structural form, and because the force of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50F16F3/02F16F1/18
CPCF16F1/185F16F3/023G06F30/17G06F30/23
Inventor 周长城赵雷雷于曰伟王凤娟邵明磊杨腾飞汪晓
Owner SHANDONG UNIV OF TECH
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