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Method for checking strength of end contact type few-leaf parabola-shaped section-variable master and slave springs

A technology of strength calibration and parabola, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve complex problems

Active Publication Date: 2016-08-31
扬州市明峰弹簧有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the non-equal configuration of the straight sections at the ends of each sheet of the main spring, the length of the auxiliary spring is not equal to that of the main spring. The calculation of the end force of each sheet of the main spring and the auxiliary spring after the main and auxiliary contact is very complicated. It has not been done before. It can provide the check method of the stress strength of each piece of main spring and each piece of auxiliary spring of the end-contact type few-piece parabolic variable-section main and auxiliary springs

Method used

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  • Method for checking strength of end contact type few-leaf parabola-shaped section-variable master and slave springs
  • Method for checking strength of end contact type few-leaf parabola-shaped section-variable master and slave springs
  • Method for checking strength of end contact type few-leaf parabola-shaped section-variable master and slave springs

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Embodiment

[0064] Embodiment: The number of main reeds m=2 of a certain contact-type few-piece parabolic variable-section main and secondary springs, wherein, half the length L of each main spring M =575mm, width b=60mm, elastic modulus E=200GPa, allowable stress [σ]=700MPa, half of the installation distance l 3 =55mm, the distance l from the root of the parabolic segment of each main spring to the end point of the main spring 2M = L M -l 3 =520mm, the thickness h of the straight section at the root of each main spring 2M =11mm; the thickness h of the straight section at the end of the first main spring 11 =7mm, the thickness ratio of the parabolic segment of the first main spring to β 1 = h 11 / h 2M =0.64; the thickness h of the straight section at the end of the second main spring 12 = 6mm, the thickness ratio of the parabolic segment of the second main spring to β 2 = h 12 / h 2M = 0.55. The number of secondary reeds n=1, half the length L of the secondary reed A =525mm, th...

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Abstract

The invention relates to a method for checking the strength of end contact type few-leaf parabola-shaped section-variable master and slave springs, and belongs to the technical field of suspension steel plate springs. The method can check the stress strength of each of master springs and slave springs according to structure parameters, elasticity modulus, allowable stress, slave spring work load and the maximum load of each of the master springs and the slave springs of the end contact type few-leaf parabola-shaped section-variable master and slave springs. The embodiment and simulation verification show that the method for checking the strength of the end contact type few-leaf parabola-shaped section-variable master and slave springs is correct; and a check value of stress strength of each of the master springs and the slave springs is accurate and reliable. The method can improve and prolong the design level, the product quality, and the service life of the end contact type few-leaf parabola-shaped section-variable master and slave springs, improves the riding comfort of a vehicle, decreases design and testing expenses, and accelerates the product development speed.

Description

technical field [0001] The invention relates to a vehicle suspension leaf spring, in particular to a method for checking the strength of an end-contact few-piece parabolic variable-section primary and secondary spring. Background technique [0002] In order to meet the lightweight design requirements of the vehicle suspension, most of the current light truck suspension leaf springs use a few parabolic variable cross-section primary and secondary springs. Due to the complex force of the first main spring of the small variable cross-section main and auxiliary springs, it not only bears vertical loads, but also bears torsional loads and longitudinal loads. Therefore, the end of the first main spring is actually designed to be straight The thickness and length of the section are greater than the thickness and length of the straight sections at the ends of the other main springs, that is, most of them use a small number of variable-section leaf springs with non-equal structures a...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20
Inventor 陈海真王炳超周长城赵雷雷于曰伟汪晓邵明磊
Owner 扬州市明峰弹簧有限公司
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