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Verification Algorithm for Active Load of Secondary Spring of End-contact Double Reinforced Primary and Secondary Springs

A reinforced, main and auxiliary spring technology, used in computing, special data processing applications, instruments, etc., can solve the problem that can not meet the design requirements of the main and auxiliary springs with few-piece variable cross-section, and can not meet the end-contact double-reinforced type. The requirements for the verification of the acting load of the auxiliary springs of the main and auxiliary springs of the cross section, the complex deformation calculation and other problems

Active Publication Date: 2018-07-20
重庆华得利机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex calculation of the deformation of the double-reinforced small-leaf variable-section leaf spring at any position at the end and the root, it has not been possible to give the effective load of the auxiliary spring with the end contacting the double-reinforced small-leaf variable-section primary and secondary springs. Calculation method
[0003] Although some people have previously given the design and calculation method of a few inclined-line variable-section leaf springs, for example, Peng Mo and Gao Jun once proposed variable-section springs in "Automotive Engineering", 1992 (Vol. The design and calculation method of the leaf spring, this method is mainly for the design and calculation of the few-piece parabolic variable-section leaf spring with the end isomorphic, and its shortcoming is that it cannot meet the requirements of the few-piece variable-section primary and secondary springs with the end non-equal structure Design requirements, not to mention that it cannot meet the requirements for checking the load of the auxiliary spring of the end-contact double-reinforced small-piece variable-section main and auxiliary springs

Method used

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  • Verification Algorithm for Active Load of Secondary Spring of End-contact Double Reinforced Primary and Secondary Springs
  • Verification Algorithm for Active Load of Secondary Spring of End-contact Double Reinforced Primary and Secondary Springs
  • Verification Algorithm for Active Load of Secondary Spring of End-contact Double Reinforced Primary and Secondary Springs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: the sheet number N=2 of double-reinforced few-sheet variable-section main spring of certain end and root, wherein, the half length L=575mm of each sheet main spring, width b=60mm, modulus of elasticity E=200GPa, The thickness h of the straight section at the root 2 =11.43mm, half of the installation distance l 3 =55mm, the length of oblique line at the root Δl 2 =30mm, the length of oblique line at the end Δl 1 =30mm; the horizontal distance l from the root of the oblique line section at the root to the end point of the main spring 2 =L-l 3 =520mm, the horizontal distance l from the root of the parabola segment to the end point of the main spring 2p =L-l 3 -Δl 2 =490mm; root thickness h of parabola segment 2p =10.28mm, the thickness ratio of the oblique section at the root γ=h 2p / h 2 =0.90; end thickness h of the parabolic segment of the first main spring 11p =5.65mm, the thickness ratio β of the parabolic segment of the first main spring 1 =h ...

Embodiment 2

[0046] Embodiment two: the sheet number N=2 of double-reinforced few-sheet variable-section main spring of certain end and root, wherein, the half length L=600mm of each sheet main spring, width b=60mm, modulus of elasticity E=200GPa, The thickness h of the straight section at the root 2 =14.79mm, 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 horizontal distance l from the root of the oblique line section at the root to the end point of the main spring 2 =L-l 3 =540mm, the horizontal distance l from the root of the parabola segment to the end point of the main spring 2p =L-l 3 -Δl 2 =510mm; root thickness h of parabola segment 2p =13.31mm, the thickness ratio of the oblique section at the root γ=0.90, and the end thickness h of the parabolic section of the first main spring 11p=7.32mm, the thickness ratio β of the parabolic segment of the first main spring 1 ...

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Abstract

The invention relates to a method for carrying out check calculation on secondary spring acting load of end contact type double-strengthened less-leaf primary / secondary springs, and belongs to the technical field of suspension plate springs. The method comprises the following steps: firstly determining an endpoint deformation coefficient GxFi and half rigidity KMi of each primary spring as well as a deformation coefficient GxEF, at a contact point of an end straight section and a secondary spring, of the Nth primary spring according to the structure size and elasticity modulus of each end and root double-strengthened taper leaf primary spring; carrying out check calculation on a secondary spring acting load according to a primary / secondary spring gap delta design value, the half rigidity KMi of each primary spring, the thickness h2 of the root straight section of the Nth spring and the GxEF of each primary spring. Simulation verification proves that the method can be used for obtaining correct and reliable check calculation value of the secondary spring acting load of the end contact type end and root double-strengthened less-taper leaf primary / secondary springs, so that the product design level and performance as well as the vehicle smoothness are improved, the design and test expenses are reduced and the product development speed is improved.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to an end-contact type double-reinforced primary and secondary spring with few pieces of main and secondary springs and an auxiliary spring active load verification method. Background technique [0002] The first piece of the main spring with variable cross-section is subjected to complex forces, not only bears the vertical load, but also bears the torsional load and the longitudinal load. Therefore, the end thickness of the first main spring is actually designed to be larger than that of other pieces. The thickness of the end of the piece, that is, most of the main springs with a small number of variable cross-sections with non-isostructural ends are used; at the same time, in order to strengthen the strength of the main spring at the end and root of the variable cross-section, usually between the straight section of the main spring end and the parabola Between the sections, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 周长城王炳超于曰伟赵雷雷许祥利邵明磊王凤娟
Owner 重庆华得利机械有限公司