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Matching design method for pre-clamping stress of double-reinforced iso-structured small-blade variable-section plate springs

A variable cross-section, pre-clamping technology, applied in the design characteristics of springs/shock absorbers, leaf springs, computer-aided design, etc., can solve the pre-clamping stress of a few pieces of variable-section leaf springs with double reinforcements and other configurations that have not been given and other issues to achieve the effect of reducing design and test costs, speeding up development, and improving design levels

Inactive Publication Date: 2018-06-29
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the searched data, due to the constraints of the calculation of the pre-clamping stress difference between the leaf springs, the matching design of the pre-clamping stress of the double-reinforced equal-construction few-piece variable-section leaf spring has not been given before. Law

Method used

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  • Matching design method for pre-clamping stress of double-reinforced iso-structured small-blade variable-section plate springs
  • Matching design method for pre-clamping stress of double-reinforced iso-structured small-blade variable-section plate springs
  • Matching design method for pre-clamping stress of double-reinforced iso-structured small-blade variable-section plate springs

Examples

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Effect test

Embodiment 1

[0021] Embodiment 1: The width b=60mm of a certain double-strengthened equal-structure parabolic variable-section leaf spring, and half the effective length L T =575mm, half the length L of the straight section of the root clamped by the saddle bolt 0 =50mm, the horizontal distance l from the root of the oblique line section at the root to the end point of the leaf spring 2 = L T -L 0 =525mm. The number of leaf springs n=3, the thickness h of the straight section at the root of each leaf spring 2 =18mm. Rated load P N = 16000N, the allowable stress of the first leaf spring under rated load [σ 1 ]=400MPa. According to the number of leaf springs, the structural parameters of each leaf spring, the rated load and the allowable stress of the first leaf spring under the rated load, the pre-measurement Clamping stress matching design.

[0022] The matching design method of the pre-clamping stress of the double-reinforced equal-structure few-piece variable-section leaf spring...

Embodiment 2

[0035] Embodiment 2: The width b=60mm of a certain double-strengthened equal-structure parabolic variable-section leaf spring, and half the effective length L T =575mm, the half length L of the straight section at the root of the saddle bolt clamping distance 0 =50mm, the horizontal distance l from the root of the oblique line section at the root to the end point of the leaf spring 2 =L T -L 0 =525mm. The number of leaf springs n=4, the thickness h of the straight section at the root of each leaf spring 2 = 16 mm. Rated load P N =16500N, the allowable stress of the first leaf spring under rated load [σ 1 ]=400MPa. According to the number of leaf springs, the structural parameters of each leaf spring, the rated load and the allowable stress of the first leaf spring under the rated load, the pre-measurement Clamping stress matching design.

[0036] Using the same matching design method and steps as in Embodiment 1, the pre-clamping stress of each leaf spring of the doub...

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Abstract

The invention relates to a matching design method for pre-clamping stress of double-reinforced iso-structured small-blade variable-section plate springs, and belongs to the technical field of suspension small-blade variable-section plate springs. The method can perform matching design on the pre-clamping stress of each plate spring of the double-reinforced iso-structured small-blade variable-section plate springs according to the number of the plate springs, structural parameters of each plate spring, rated load and allowable stress of the first plate spring under the rated load. Through prototype testing, the matching design method for the pre-clamping stress of the double-reinforced iso-structured small-blade variable-section plate springs is correct; accurate and reliable matching design values of the pre-clamping stress of each plate spring can be obtained; and reliable technological base is laid for free tangent line arc height design of each plate spring of the double-reinforcediso-structured small-blade variable-section plate springs. The method can improve the product design level, reliability and service life and the vehicle driving safety, meanwhile, reduces the productdesign and testing costs, and accelerates the product development speed.

Description

technical field [0001] The invention relates to a small-piece variable-section leaf spring for a vehicle suspension, in particular to a matching design method for the pre-clamping stress of a few-piece variable-section leaf spring of a double-reinforced structure. Background technique [0002] With the implementation of automobile energy-saving and lightweight policies, the leaf springs with variable cross-sections are increasingly popular in vehicle suspension due to their advantages of light weight, high material utilization, no friction or small friction between sheets, low vibration and noise, and long service life. Experts, manufacturers and vehicle manufacturers have paid great attention to it, and it has been widely used in vehicle suspension systems. In order to strengthen the strength of the leaf spring, an inclined root section is added between the straight section and the parabolic section at the root of the leaf spring. An oblique section at the end is added betw...

Claims

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Application Information

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IPC IPC(8): F16F3/02F16F1/18G06F17/50
CPCF16F1/187F16F3/023F16F2226/04F16F2228/06F16F2230/0082F16F2230/40F16F2238/022G06F30/15G06F30/17G06F30/20G06F2119/06
Inventor 周长城于曰伟李晓晗梁宇通毛少坊赵雷雷汪晓杨腾飞杨铖兆
Owner SHANDONG UNIV OF TECH