Double cross arm independent front suspension of equation type racing car and method for controlling linear rigidity thereof

A formula car, independent suspension technology, applied in the direction of suspension, racing car, elastic suspension, etc., can solve poor stability, the impact of formula car comfort and safety, difficult suspension line stiffness and roll stiffness relatively independent adjustment To improve line stiffness, reduce self-weight, and improve handling stability

Inactive Publication Date: 2019-03-15
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of vehicle manufacturing technology, the driving speed of formula racing cars continues to increase. People pay more and more attention to the driving stability and safety of formula racing cars. At the same time, people's requirements for driving comfort are also increasing. Independent suspension commercial vehicles can no longer meet the requirements of ride comfort and handling stability
[0003] Double-wishbone independent suspension has been widely used in formula racing cars due to its better handling stability and comfort, and there are still a small number of interconnected double-wishbone independent suspensions on the market, but the two interconnected double-wishbone independent suspensions Two independent suspensions are rigidly connected, so it is difficult to achieve relatively independent adjustment of the suspension line stiffness and roll stiffness, and the steering stability is poor when the wheel jumps, which has a certain impact on the comfort and safety of driving a formula car. influences

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Double cross arm independent front suspension of equation type racing car and method for controlling linear rigidity thereof
  • Double cross arm independent front suspension of equation type racing car and method for controlling linear rigidity thereof
  • Double cross arm independent front suspension of equation type racing car and method for controlling linear rigidity thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: The double-wishbone independent front suspension of formula racing car, constitutes as Figure 1-4As shown, it includes an independent suspension assembly symmetrically arranged on both sides of the front of the vehicle frame 25. The independent suspension assembly includes a connecting block 4 connected to the front suspension push rod 20, and an independent spring is connected to the connecting block 4. 12. The other end of the independent spring 12 is connected to the front arm bar 30 of the vehicle frame 25. The connecting blocks 4 on both sides are respectively hinged with a short shaft 11, and three spring connecting rods 5 are hinged between the two short shafts 11. The three spring connecting rods 5 are provided with a weight-reducing through hole 13, which can reduce the weight of the three spring connecting rods 5. Its own weight plays a certain auxiliary role in the requirements of the body weight. The middle part of the three spring connecting...

Embodiment 2

[0054] Embodiment 2: Simulation Analysis of Wheel Jump

[0055] The simulation parameters of the double-wishbone independent suspension are set as wheelbase 1550mm, sprung mass 1212kg, center of mass height 300mm, tire static diameter 228.6mm, tire stiffness 140N / mm, tire mass 3.5kg, and effective travel of the wheel jump 50mm. The length of the spring shock absorber is 200mm, and the length of the third spring is 270mm. The simulation results of wheel jump in the same direction are as follows: Figure 5 shown.

[0056] exist Figure 5 The middle is the comparison of the displacement changes of the independent spring and the third spring of the double-wishbone independent front suspension. The change amount of the independent spring and the third spring is almost equal when the wheel jumps in the same direction, that is, the transmission ratio of the third spring can be almost equal to that of the independent spring by rationally designing the mechanical structure. It shows...

Embodiment 3

[0058] Embodiment 3: Simulation analysis of step steering

[0059] Perform step steering simulations for different stiffnesses of the third spring (125lbs / in and 250lbs / in), and the simulation result curves are as follows Figure 8 shown.

[0060] Figure 8 It shows that the change curves of the body roll angle after the step steering under different stiffnesses of the third spring are basically coincident, which means that the third spring has almost no influence on the vehicle roll.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a double cross arm independent front suspension of an equation type racing car and a method for controlling the linear rigidity thereof, the suspension comprises an anti-roll rod (1) arranged on a frame (25), both ends of the anti-roll rod (1) are connected with connecting blocks (4) through long rods (3), the connecting blocks (4) are connected with a front suspension pushrod (20), the front suspension push rod (20) is connected with a front upright post (19), and the front upright post (19) is matched and connected with a front suspension wheel edge (21) so as to achieve the connection of two independent front suspensions. Three spring connecting rods (5) are arranged between the two connecting blocks (4), a third spring (6) with a damping spring (7) is arrangedat the middle part of the three spring connecting rods (5), and the third spring (6) is fixed on the frame (25). According to the invention, an interconnection mechanism with the third spring is designed to achieve the relatively independent adjustment of the linear rigidity and roll rigidity of the suspension, so that the car body is more stable when wheels jump, and the operation stability of the whole car can be improved.

Description

technical field [0001] The invention relates to a double-wishbone independent suspension, in particular to a double-wishbone independent front suspension of a formula racing car and a control method for its linear stiffness. Background technique [0002] With the development of vehicle manufacturing technology, the driving speed of formula racing cars continues to increase. People pay more and more attention to the driving stability and safety of formula racing cars. At the same time, people's requirements for driving comfort are also increasing. Independent suspension commercial vehicles can no longer meet the requirements of ride comfort and handling stability. [0003] Double-wishbone independent suspension has been widely used in formula racing cars due to its better handling stability and comfort, and there are still a small number of interconnected double-wishbone independent suspensions on the market, but the two interconnected double-wishbone independent suspensions ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B60G3/20B60G11/48
CPCB60G3/20B60G11/48B60G2300/27B60G2800/20B60G2800/22
Inventor 赵璐李强
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap