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Macpherson suspension steering trapezium cut-off point position design method and device

A McPherson suspension and steering trapezoidal technology, applied in the direction of design optimization/simulation, calculation, special data processing applications, etc., can solve the problems of low precision and large error, reduce swing, small error, and improve handling stability sexual effect

Inactive Publication Date: 2017-03-15
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a design method and device for the position of the trapezoidal disconnection point of the McPherson suspension to solve the problem of low accuracy and large error when the drawing method is used to solve the disconnection point position of the steering tie rod

Method used

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  • Macpherson suspension steering trapezium cut-off point position design method and device
  • Macpherson suspension steering trapezium cut-off point position design method and device
  • Macpherson suspension steering trapezium cut-off point position design method and device

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Embodiment 1

[0049] This embodiment provides a design method for the McPherson suspension steering trapezoidal break point position, such as figure 1 As shown, steps S101, S102, S103 and S104 are included. Each step is described in detail below.

[0050]Step S101: According to the position of the outer spherical hinge point of the steering tie rod when the wheel does not swing around the kingpin of the MacPherson suspension with the steering tie rod and the wheel does not swing around the MacPherson suspension without the steering tie rod The movement trajectory of the outer spherical hinge point of the steering knuckle when the kingpin of the suspension swings and the wheel jumps up and down, and the spatial distance between the outer spherical hinge point of the steering knuckle and the outer spherical hinge point of the steering tie rod is obtained. function of coordinates.

[0051] image 3 is the structure schematic diagram of MacPherson suspension, where O point is the upper spher...

Embodiment 2

[0066] Corresponding to the first embodiment, this embodiment provides a design device for the position of the MacPherson suspension steering trapezoidal breaking point, including an acquisition module 201 , a setting module 202 , a determination module 203 and a calculation module 204 . Each module is introduced in detail below.

[0067] The acquisition module 201 is used to obtain the position of the outer spherical hinge point of the steering tie rod when the wheel does not swing around the kingpin of the McPherson suspension with the steering tie rod and the position of the wheel not turning around the steering tie rod. The movement trajectory of the outer spherical hinge point of the steering knuckle when the kingpin of the MacPherson suspension swings and the wheel jumps up and down, and the spatial distance between the outer spherical hinge point of the steering knuckle and the outer spherical hinge point of the steering tie rod is obtained. A function of the coordinate...

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Abstract

The invention provides a Macpherson suspension steering trapezium cut-off point position design method and device; the method comprises the following steps: according to the position of an outer spherical hinge point of a track rod lever when the wheels do not swing around the king pin of the Macpherson suspension having the track rod lever, and according to the motion locus of an outer spherical hinge point of a knckle pivot when the wheels do not swing around the king pin of the Macpherson suspension having no track rod lever and the wheels jump up and down, the functions of the space distance (with respect to cut-off point coordinates) between the outer spherical hinge point of the knckle pivot and the outer spherical hinge point of the track rod lever can be obtained; the method also comprises the following steps: setting a cut-off point coordinate value range according to the structure and arrangement conditions of the Macpherson suspension having the track rod lever; determining coordinate values of the outer spherical hinge points of two or more knckle pivots according to the motion locus of the knckle pivot outer spherical hinge point; resolving the cut-off point coordinate values when the space distance is minimum according to the functions of the space distance with respect to the cut-off point coordinates. By using the method, the obtained cut-off point coordinate value is small in errors and high in precision.

Description

technical field [0001] The invention relates to the technical field of vehicle design, in particular to a design method and device for a McPherson suspension steering trapezoidal breaking point position. Background technique [0002] The McPherson suspension and the steering trapezoid form a spatial linkage mechanism. According to the requirements of vehicle handling stability, when the steering wheel jumps up and down relative to the body with the uneven road surface, the ideal design of the disconnection point of the steering tie rod should make the wheel only jump up and down without swinging around the kingpin. But in fact, because the movement of the suspension linkage and the steering linkage are interrelated, the swing around the kingpin is unavoidable during the wheel jumping process. Unreasonable selection of the disconnection point of the steering tie rod will not only intensify the swing of the steering wheel around the kingpin, but also make it difficult to meet...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20
Inventor 孙亚龙孙礼李海艳
Owner CHERY AUTOMOBILE CO LTD
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