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Following steering axle for air suspension of automobile

An air suspension and follow-steering technology, which is applied to steering mechanisms, steering rods, vehicle components, etc., can solve the problems of low tensile strength, failure to achieve overall assembly, and easy deformation of suspension follow-up steering axles. The effect of improving mechanical strength and overall strength

Inactive Publication Date: 2007-07-11
宋立华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lifting arm bracket or combiner bracket steel piece welded by steel plates has the following defects: the weld seam is easy to crack, which affects the service life of the air suspension follow-up steering axle; the positioning accuracy of the parts during welding is low and difficult to control , it is easy to make the assembled suspension follow-up steering axle easy to deform, and it cannot meet the requirements of the overall assembly; the tensile strength of the Q345 type steel plate used is too small, which will easily cause the overall deformation of the entire automobile chassis to be scrapped

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] The steel with both S and P less than 0.04% by weight is selected for smelting welding wire steel, and there is no special requirement for the smelting process. During the smelting process, the following elements by weight are added: C: 0.25, Mn: 0.08, Si: 0.50, Cr: 0.15, V: 0.10, Ni: 0.20, Mo: 0.20, and the balance is iron and its inevitable impurities. Casting the steel obtained above can obtain the lifting arm bracket and the combiner bracket which constitute the main components of the automobile air suspension follow-up steering axle.

Embodiment 2

[0010] The steel with both S and P less than 0.05% by weight is selected for smelting welding wire steel, and there is no special requirement for the smelting process. During the smelting process, the following elements by weight are added: C: 0.20, Mn: 0.05, Si: 0.30, Cr: 0.20, V: 0.12, Ni: 0.25, Mo: 0.15, and the balance is iron and its unavoidable impurities. Casting the steel obtained above can obtain the lifting arm bracket and the combiner bracket which constitute the main components of the automobile air suspension follow-up steering axle.

Embodiment 3

[0012] The steel with both S and P less than 0.02% by weight is selected for smelting welding wire steel, and there is no special requirement for the smelting process. During the smelting process, the following elements by weight are added: C: 0.21, Mn: 0.09, Si: 0.90, Cr: 0.10, V: 0.08, Ni: 0.15, Mo: 0.25, and the balance is iron and its inevitable impurities. Casting the steel obtained above can obtain the lifting arm bracket and the combiner bracket which constitute the main components of the automobile air suspension follow-up steering axle.

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Abstract

The invention discloses an air suspending rack follow-up steering bridge of automobile, wherein the steel piece of air suspending rack follow-up steering bridge of automobile consists of elevating arm rack and assembling rack, which is composed of 0.20-0.30% C, 0.03-0.10% Mn, 0.30-0.90% Si, 0.10 -0.25% Cr, 0.08-0.15% V, 0.15-0.30% Ni, 0.10-0.25% Mo, less than 0.06% S, less than 0.06% P, Fe and inevitable impurity.

Description

technical field [0001] The invention belongs to the technical field of automobile components, and in particular relates to an air suspension follow-up steering axle specially used for heavy vehicles. Background technique [0002] The air suspension follow-up steering axle is an important part of heavy-duty vehicles, mainly composed of lifting arm brackets and combiner bracket steel parts. At present, the above-mentioned two steel parts that constitute the air suspension follow-up steering axle are assembled and welded by the steel plates of the Q345 model respectively. The welded lifting arm bracket and combiner bracket steel parts are then assembled with other components to form an air suspension follow-up steering axle. The lifting arm bracket or combiner bracket steel piece welded by steel plates has the following defects: the weld seam is easy to crack, which affects the service life of the air suspension follow-up steering axle; the positioning accuracy of the parts du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/46B62D7/20
Inventor 宋立华
Owner 宋立华