Connecting method for lifting lug and automobile composite material plate spring and connecting element for connecting method

A composite material plate and connection method technology, applied in the direction of springs, springs/shock absorbers, leaf springs, etc., to achieve the effects of improving connection strength, reducing friction and impact effects, and increasing reliability

Active Publication Date: 2015-07-01
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] None of the above patent documents involves how to effectively eliminate the influence of the internal friction and impact effect of the composite material leaf spring and the metal lifting lug at the connection part during the running of the vehicle, so as to improve the service life of the composite material leaf spring

Method used

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  • Connecting method for lifting lug and automobile composite material plate spring and connecting element for connecting method
  • Connecting method for lifting lug and automobile composite material plate spring and connecting element for connecting method
  • Connecting method for lifting lug and automobile composite material plate spring and connecting element for connecting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1: Such as Figure 1 to Figure 5 The method for connecting the lugs of a leaf spring made of composite material for automobiles is shown in the following steps: 1) During the forming process of the leaf spring 1 made of composite material, its end is made into a wedge-shaped structure 2 with two opposite slopes, And process the end bolt holes 3; 2), process the inside of the metal lifting lug 4 into a wedge-shaped structure 5 matching the end of the composite material leaf spring, and process the bolt hole 6 on the metal lifting lug 4, the bolt hole 6 and The bolt holes 3 at the ends of the composite leaf springs correspond to each other; 3) roughen the upper and lower surfaces within the assembly length range of the end of the composite leaf spring 1, and apply A layer of adhesive layer 7; 4), assemble the composite material leaf spring 1 with the metal lifting lug 4, use bolts 8 to pass through the bolt holes of the composite material leaf spring and the met...

Embodiment 2

[0054] Example 2: Such as Figure 6 and Figure 7 The connection method and connecting parts of a composite material leaf spring lug shown are only different from Embodiment 1 in that the end of the composite material leaf spring 1 is an inverted wedge-shaped structure with two opposite slopes, and the matching The inside of the metal lug 4 is also processed into an inverted wedge structure, the cone angle 9 of which is 5°, the assembly length of the end of the composite leaf spring 1 is 80mm, and the coating thickness of the adhesive layer 7 is 1mm. In this embodiment, the assembled composite material leaf spring should be stored as a whole at a constant temperature of 65 degrees for curing for 8 hours, and after natural cooling, the finished composite material leaf spring as a whole should be obtained.

Embodiment 3

[0055] Example 3: Such as Figure 8 and Figure 9 The connection method and connecting parts of a composite material leaf spring lug shown are only different from Embodiment 1 in that the end of the composite material leaf spring 1 is a rectangular structure with two symmetrical horizontal planes, and the matching metal The inside of the lifting lug 4 is also processed into a rectangular structure, the assembly length of the end of the composite leaf spring 1 is 70 mm, and the coating thickness of the adhesive layer 7 is 0.7 mm. In this embodiment, the assembled composite material leaf spring should be stored as a whole at a constant temperature of 75 degrees for curing for 6 hours, and after natural cooling, the finished composite material leaf spring as a whole should be obtained.

[0056] To sum up, the present invention provides a method for connecting the lifting lugs of composite leaf springs of automobiles and its connectors, since the bolt connection method generall...

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Abstract

The invention discloses a connecting method for a lifting lug and an automobile composite material plate spring. The connecting method comprises the following steps of: (1) producing the end part of the composite material plate spring to be of a wedge-shaped structure, a rectangular structure or an inverted-wedge-shaped structure, and machining a bolt hole; (2) machining the interior of the metal lifting lug to be of a shape and a structure matched with those of the end part of the composite material plate spring, and machining a bolt hole; 3) roughly polishing and gluing the upper surface and the lower surface in an assembly length range of the end part of the composite material plate spring; (4) assembling the end part of the composite material plate spring with the metal lifting lug; and (5) curing the whole assembled composite material plate spring under certain conditions by an adhesive. The invention further provides a connecting element for the method. According to the invention, connecting strength between the composite material plate spring and the metal lifting lug can be improved, and friction and an impact effect between the composite material plate spring and the metal lifting lug are reduced and alleviated, the service life of the whole composite material plate spring is prolonged, and the difficulty of a forming process of the composite material plate spring is reduced.

Description

technical field [0001] The invention relates to a method for connecting lugs of composite leaf springs of automobiles and its connectors, in particular to a method of connecting lugs of leaf springs of composite materials for automobiles with high connection strength and long service life and its connectors, which belong to automobile Production and manufacturing of parts and components. Background technique [0002] Composite leaf springs have broad application prospects in the automotive industry, which have good fatigue resistance and weight reduction. However, the friction resistance of the composite material leaf spring is poor, and the composite material leaf spring connected to the chassis of the vehicle body will rub and collide with the surrounding metal parts during the running of the vehicle, thereby shortening its service life. Especially at the two ends of the composite leaf spring, the current common method is to use bolts to mechanically fasten the metal lugs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60G11/10
Inventor 王甲世李再轲魏思德吴辉姜其斌
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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