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Analytical design method of camber and surface shape of automobile plate spring

A technology of leaf springs and design methods, applied in springs/shock absorbers, leaf springs, mechanical equipment, etc., can solve problems such as failure to meet design requirements, avoid repeated tests and revisions, design accurate and reliable, and meet precise design requirements. Effect

Inactive Publication Date: 2012-10-17
SHANDONG UNIV OF TECH
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AI Technical Summary

Problems solved by technology

However, at present, there is no accurate and reliable design method for the arc height and surface shape of the leaf spring at home and abroad. Most of them first design the arc height according to the estimation formula in the "Automobile Design" manual, and then after testing and modification, finally The required arc height and surface shape can not be satisfied with the increasingly lean design requirements of modern automobiles.

Method used

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  • Analytical design method of camber and surface shape of automobile plate spring
  • Analytical design method of camber and surface shape of automobile plate spring

Examples

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Embodiment Construction

[0022] In order to better understand the present invention, the following examples of the design of the arc height and curved shape of the two leaf springs without auxiliary spring and with auxiliary spring will further describe the present invention in detail. The specific steps are as follows.

[0023] (1) Design of arc height and curved shape of leaf spring without auxiliary spring

[0024] Design value of equivalent thickness of required stiffness for a certain automobile leaf spring h =19mm, width b =40mm, the length of the leaf spring l =1400mm, the maximum load that the single-wheel leaf spring can bear = N, the elastic modulus of the leaf spring material . According to the above parameters, the design value of the arc height of the leaf spring is determined

[0025] =122.5mm;

[0026] According to the formula Determine the curved surface shape of the leaf spring, such as figure 1 Shown.

[0027] (2) Design of arc height and curved shape of leaf spring with auxiliary spring...

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Abstract

The invention relates to an analytical design method of a camber and a surface shape of an automobile plate spring, belonging to the field of automobile springs. According to the invention, the performances of a suspension are influenced by the camber and the surface shape of the plate spring, but an accurate design method for the camber and the surface shape is not provided. According to the performance requirements of the automobile suspension on the plate spring, the analytical design method of the camber and the surface shape of the automobile plate spring can be established by using elastic mechanical theory. The analytical design method of the camber and the surface shape of the automobile plate spring, provided by the invention, is simple and reliable, and requirements of precise design of the thickness of the automobile plate spring can be satisfied by utilizing the analytical design method. The analytical design method can be used for design of the vehicle suspension plate spring.

Description

Technical field [0001] The invention relates to an automobile suspension steel plate spring, in particular to a design method for the arc height and curved surface shape of the automobile steel plate spring. Background technique [0002] Leaf spring is the most widely used elastic element in automobile suspension. It is a combination of several alloy springs of equal width but unequal length (the thickness can be equal or unequal). Of elastic beams. The arc height and curved shape of the leaf spring affect the stiffness and deformation of the leaf spring, thereby affecting the steering stability and smoothness of the car. There are mainly two types of automobile leaf springs without auxiliary springs (only the main spring) and auxiliary springs (main and auxiliary springs). For vehicles with large changes in full load and half load, main and auxiliary leaf springs are mostly used. The rapid development of the vehicle has put forward higher requirements for the design of vehicle...

Claims

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Application Information

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IPC IPC(8): F16F1/18
Inventor 周长城赵雷雷毛少坊
Owner SHANDONG UNIV OF TECH
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