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Single-leaf spring for heavy truck

A leaf spring and monolithic technology, applied in the direction of springs, leaf springs, springs/shock absorbers, etc., can solve problems such as poor stability and non-compliance with lightweight requirements

Inactive Publication Date: 2020-10-23
东风汽车底盘系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a single-leaf leaf spring for heavy-duty trucks to solve the problems of poor structural stability of the above-mentioned two-leaf leaf springs and failure to meet lightweight requirements

Method used

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  • Single-leaf spring for heavy truck
  • Single-leaf spring for heavy truck
  • Single-leaf spring for heavy truck

Examples

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Embodiment 1

[0026] This embodiment provides a single leaf spring for a heavy truck, its structure is as follows Figure 2-3 As shown, it includes a single leaf spring roll lug 3, and the single leaf spring roll lug 3 is a spring leaf with unequal width and a trapezoidal or parabolic cross-section whose thickness varies along the length direction. A positioning pin 4 is arranged in the center hole of the sheet leaf spring roll lug 3, and the positioning pin 4 is in interference fit with the center hole, and the single leaf spring roll lug 3 is rigidly connected to the positioning pin 4 through the center hole on the chassis axle.

[0027] Specifically, the surface of the single leaf spring roll lug 3 is divided into a variable section area 5 and an intermediate clamping area 6, the variable section area 5 is located at both ends of the intermediate clamping area 6, and the intermediate clamping area The width of 6 is smaller than the width of the variable cross-section area 5 at its two e...

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Abstract

The invention discloses a single-leaf spring for a heavy truck. The single-leaf spring comprises a single-leaf spring eye sheet, the single-leaf spring eye sheet is a spring sheet with the unequal width and the thickness changing in the length direction, and the spring sheet with a trapezoidal section or a parabola section. A positioning pin is arranged in a center hole of the single-leaf spring eye sheet, the positioning pin and the center hole are in interference fit, and the single-leaf spring eye sheet is rigidly connected to a chassis axle through the center hole and the positioning pin.Compared with a two-leaf spring, the weight of the single-leaf spring eye sheet can be reduced by 20% or above, a middle clamped areas is small in width and thick in section, and the material utilization rate of the middle clamped area can be effectively increased. In addition, the middle of the single-leaf spring eye sheet is small in cracking risk, and the risk that due to the fact that the middle clamped area cracks, vehicle steering fails is reduced.

Description

technical field [0001] The invention relates to the technical field of automobile chassis parts, in particular to a single leaf spring used for heavy-duty trucks. Background technique [0002] Leaf spring is the most widely used elastic element in automobile suspension. It is composed of several alloy spring pieces of equal width but unequal length (thickness can be equal or not). An approximately equal strength elastic beam. With the continuous improvement of people's requirements for the comfort and reliability of automobiles and the requirements for lightweight vehicles, the application of small-piece variable-section leaf springs is becoming more and more extensive. [0003] At present, the leaf springs used for heavy trucks are mostly two-leaf leaf springs, and their structures are as follows: figure 1 As shown, it includes the ear rolling piece 1 and the ear wrapping piece 2. The ear rolling piece 1 and the ear wrapping piece 2 are rigidly connected. Although the two...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/18F16F1/26
CPCF16F1/185F16F1/26
Inventor 刘安全石朝阳王海庆刘祥军何云江开富春
Owner 东风汽车底盘系统有限公司
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