Method for designing limiting deflection of few-leaf two-end-reinforced plate springs with ends of non-equal structures

A design method and enhanced technology, applied to leaf springs, springs, calculations, etc., can solve problems such as difficult analysis and calculation, complex structure types of leaf springs, etc.

Inactive Publication Date: 2016-12-21
SHANDONG UNIV OF TECH
View PDF7 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity of the structural type of the two-end reinforced small-leaf variable-section leaf spring, it is very difficult to analyze and calculate it. According to the information obtained, there has been no reliable end non-isostructural few-leaf two-piece spring at home and abroad. Design method of limiting deflection of end-reinforced leaf spring

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
  • Method for designing limiting deflection of few-leaf two-end-reinforced plate springs with ends of non-equal structures
  • Method for designing limiting deflection of few-leaf two-end-reinforced plate springs with ends of non-equal structures
  • Method for designing limiting deflection of few-leaf two-end-reinforced plate springs with ends of non-equal structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: Half the length L of each leaf spring of a certain few-piece two-end reinforced variable-section leaf spring M =575mm, width b=60mm, thickness h of the straight section at the root 2M =11mm, the end thickness h of the oblique line section at the root 2Mp =10.20mm, half of the installation distance l 3 =55mm, the length Δl of the oblique section at the root 2 = 30mm, length Δl of oblique section at the end 1 =30mm, the distance l from the root of the oblique line section at the root to the end point of the spring 2M = L M -l 3 =520mm, the distance from the root of the parabola segment to the end point of the spring l 2Mp = L M -l 3 -Δl 2 =490mm, elastic modulus E=200GPa, the thickness ratio of the oblique line section at the root of each leaf spring γM = h 2Mp / h 2M =0.93; The end thickness h of the parabolic segment of the first piece of spring 1Mp1 =6mm, that is, the thickness ratio of the parabola segment β 1 = h 1Mp1 / h 2M =0.55, the dist...

Embodiment 2

[0044] Embodiment 2: Half the length L of each leaf spring of a certain few-piece two-end reinforced variable-section leaf spring M =600mm, width b=60mm, thickness h of the straight section at the root 2M =12mm, the end thickness h of the oblique line section at the root 2Mp =11mm, half of the installation distance l 3 =60mm, the length Δl of the oblique section at the root 2 = 30mm, length Δl of oblique section at the end 1 =30mm, the distance l from the root of the oblique line section at the root to the end point of the spring 2M = L M -l 3 =540mm, the distance from the root of the parabola segment to the end point of the spring l 2Mp = L M -l 3 -Δl 2 =510mm, elastic modulus E=200GPa, the thickness ratio of the oblique line section at the root of each leaf spring γ M = h 2Mp / h 2M =0.92; The end thickness h of the parabolic segment of the first leaf spring 1Mp1 =7mm, that is, the thickness ratio of the parabola segment β 1 = h 1Mp1 / h 2M =0.58, the distance ...

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 method for designing limiting deflection of few-leaf two-end-reinforced plate springs with ends of non-equal structures, and belongs to the technical field of suspension steel plate springs. The limiting deflection of the few-leaf two-end-reinforced plate springs with the ends of the non-equal structures can be designed by the aid of the method according to structural parameters, elastic modulus and the maximum allowable safety stress of various leaf springs and the free lengths of limiting stoppers. The method has the advantages that as known from sample machine loading deformation experiments and tests, the method for designing the limiting deflection of the few-leaf two-end-reinforced plate springs with the ends of the non-equal structures is correct, accurate and reliable limiting deflection design values can be obtained by the aid of the method, and a reliable technical foundation can be laid for designing the few-leaf two-end-reinforced plate springs with the ends of the non-equal structures and developing CAD (computer-aided design) software; the design level of products can be upgraded by the aid of the method, the quality and the performance of the products and the riding comfort of vehicles can be improved, the design, experiment and test costs of the products can be reduced, and the product development speeds can be increased.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a design method for limiting the deflection of a leaf spring with non-equal structures at both ends and reinforced at both ends. 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. In a...

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
Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/18G06F19/00
CPCF16F1/185G16Z99/00
Inventor 周长城汪晓邵明磊赵雷雷于曰伟王凤娟杨腾飞
Owner SHANDONG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap