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Design method for optimal velocity characteristics of lateral shock absorber in truck front wheel shimmy system

A technology for lateral shock absorbers and front wheels of trucks, which is applied in the fields of instruments, calculations, and special data processing applications, etc., and can solve problems such as difficult to achieve optimal damping matching of lateral shock absorbers, and no reliable design method given.

Inactive Publication Date: 2018-01-16
SHANDONG UNIV OF TECH
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Problems solved by technology

However, according to the available information, since the velocity characteristics of the lateral shock absorber are nonlinear and restricted by the optimal damping matching theory of the lateral shock absorber of the truck front wheel shimmy system, the domestic and foreign research on truck front wheel shimmy The design of the velocity characteristics of the lateral shock absorber of the system has not yet given a reliable design method. Most of them are based on the type of truck and select several similar types of lateral shock absorbers based on experience. The lateral shock absorber and speed characteristics matching the truck
Although this method can obtain more reliable velocity characteristics of the lateral shock absorber, this method can only approximate the velocity characteristics of the lateral shock absorber of the truck front wheel shimmy system, and it is difficult to achieve the optimum damping matching of the lateral shock absorber. good

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  • Design method for optimal velocity characteristics of lateral shock absorber in truck front wheel shimmy system
  • Design method for optimal velocity characteristics of lateral shock absorber in truck front wheel shimmy system
  • Design method for optimal velocity characteristics of lateral shock absorber in truck front wheel shimmy system

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Embodiment Construction

[0053] specific implementation plan

[0054] The present invention will be further described in detail through an embodiment below.

[0055] Equivalent angular stiffness K of the steering tie rod of a truck 1 =49.1kN.m / rad, the equivalent angular stiffness K of the steering column of the front wheel steering system 3 =30.41kN.m / rad; Steering tie rod equivalent angular damping coefficient C 1 =30N.m.s / rad, steering column equivalent angular damping coefficient C 3 =70N.m.s / rad; Suspension system vertical stiffness K 2 =6.06kN.s / m, shock absorber equivalent damping coefficient C 2 =1.72kN.s / m; tire vertical stiffness K t= 850kN / m, lateral stiffness ρ = 190kN / m, cornering stiffness k = 94kN.m / rad, mechanical drag moment β = 0.06m; moment of inertia of left and right front wheels around kingpin I = 20kg.m 2 , the moment of inertia I of the wheel around its own axis w =12.96kg.m 2 , the moment of inertia of the front axle around the roll axis J=31.88kg.m 2 ;The arm length ...

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Abstract

The invention relates to a design method for optimal velocity characteristics of a lateral shock absorber of a front wheel shimmy system of a truck, and belongs to the technical field of the shimmy system of the front wheel of a truck. The present invention calculates and obtains the optimal damping coefficient of the lateral shock absorber by establishing a three-degree-of-freedom driving vibration model of the front wheel shimmy system of the truck, and utilizes the safety ratio and the two-way ratio of the lateral shock absorber of the front wheel shimmy system to calculate the transverse shock absorber The optimal velocity characteristics of the shock absorber are designed, and the non-linear segmental characteristic curves of the recovery stroke and compression stroke of the transverse shock absorber required by the design are obtained. Through the design example and the verification of the shock absorber characteristic test, it can be known that the method can obtain the accurate and reliable optimal velocity characteristic curve of the transverse shock absorber of the front wheel shimmy system of the truck, which is the optimal velocity characteristic curve of the lateral shock absorber of the front wheel shimmy system of the truck. Design provides a reliable design methodology. Using this method can not only improve the design level of the transverse shock absorber of the truck and the driving safety of the vehicle, but also reduce the design and test costs and shorten the product development cycle.

Description

technical field [0001] The invention relates to a truck front wheel shimmy system, in particular to a method for designing the optimum speed characteristics of a transverse shock absorber of the truck front wheel shimmy system. Background technique [0002] The speed characteristics of the transverse shock absorber have an important influence on the ride comfort, safety and handling stability of the truck at high speed. However, according to the available information, since the velocity characteristics of the lateral shock absorber are nonlinear and restricted by the optimal damping matching theory of the lateral shock absorber of the front wheel shimmy system of trucks, at present domestic and foreign studies on the front wheel shimmy of trucks So far, no reliable design method has been given for the design of the velocity characteristics of the lateral shock absorber of the system. Most of them are based on the types of trucks, and several similar types of lateral shock ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 周长城提艳赵雷雷于曰伟
Owner SHANDONG UNIV OF TECH
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