Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Design method for feeding length of each main spring of high-strength three-grade gradual-change-stiffness plate spring

A high-strength and stiffness technology, applied in the field of vehicle suspension leaf springs, can solve the problem of not giving high-strength three-stage gradient stiffness leaf springs and other problems

Inactive Publication Date: 2017-05-31
SHANDONG UNIV OF TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the constraints of key issues such as the clamping stiffness of the main spring, the gradient stiffness, the calculation of the deflection of the main spring, the design of the initial tangent arc height of the main spring, and the calculation of the initial surface shape of the first main spring, no high-strength three-dimensional structure has been given at home and abroad. Design method of blanking length of each main spring of leaf spring with gradually changing stiffness

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Design method for feeding length of each main spring of high-strength three-grade gradual-change-stiffness plate spring
  • Design method for feeding length of each main spring of high-strength three-grade gradual-change-stiffness plate spring
  • Design method for feeding length of each main spring of high-strength three-grade gradual-change-stiffness plate spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0059] Embodiment: the width b=63mm of a certain high-strength three-stage gradient stiffness leaf spring, half L of the saddle bolt clamping distance 0 =50mm, elastic modulus E=200GPa. The total number of pieces of the main and auxiliary springs N = 5, where the number of pieces of the main spring n = 2, the thickness of each piece of the main spring h 1 =h 2 =8mm; half of the active length of each main spring is L 1T =525mm,L 2T =450mm; half of the clamping length is L 1 = L 1T -L 0 / 2=500mm, L 2 = L 2T -L 0 / 2=425mm. The number of sheets of the first secondary spring n 1 = 1, thickness h A11 =8mm, half of the active length is L A11T =350mm, half of the clamping length is L A11 = L 3 = L A11T -L 0 / 2=325mm. The number of pieces of the secondary secondary spring n 2 =1, thickness h A21 =13mm, half of the active length is L A21T =250mm, half of the clamping length is L A21 = L 4 = L A21T -L 0 / 2=225mm. The number of sheets of the third secondary spring...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a design method for the feeding length of each main spring of a high-strength three-grade gradual-change-stiffness plate spring and belongs to the technical field of vehicle suspension steel plate springs. According to the design method, according to the structural parameters of each main spring and each auxiliary spring, the mean diameter of a lifting lug, the elasticity modulus, the rated load and the rated load remaining tangent arc height, based on initial tangent arc height design of each main spring and initial curved surface shape calculation of a first main spring, the feeding design of each main spring of the high-strength three-grade gradual-change-stiffness plate spring is designed through infinitesimal curved surface and superposition calculation. A sample machine feeding machining test result shows that the design method for the feeding length of each main spring of the high-strength three-grade gradual-change-stiffness plate spring is right, the accurate and reliable design value of the feeding length of each main spring can be obtained, and a reliable technical foundation is laid for modern CAD of the high-strength three-grade gradual-change-stiffness plate spring; and meanwhile, materials can be saved, the production efficiency is improved, and the design method has remarkable economic benefits.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, especially a design method for the blanking length of each main spring of a high-strength three-stage gradually changing stiffness leaf spring. Background technique [0002] With the emergence of high-strength steel plate materials, high-strength three-stage gradient leaf springs can be used to meet the design requirements of suspension gradient stiffness and suspension bias frequency under different loads, and further improve vehicle ride comfort. , Whether the design of the blanking length of each main spring is accurate and reliable has an important impact on production efficiency and material saving. However, due to the constraints of key issues such as the clamping stiffness of the main spring, the gradual stiffness, the calculation of the deflection of the main spring, the design of the initial tangent arc height of the main spring, and the calculation of the initial surface shape of the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16F1/18G06F17/50
CPCF16F1/185G06F30/17
Inventor 周长城汪晓朱召辉袁光明杨腾飞王凤娟毛少坊
Owner SHANDONG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com