Journal of Jilin University(Engineering and Technology Edition) ›› 2023, Vol. 53 ›› Issue (4): 964-972.doi: 10.13229/j.cnki.jdxbgxb.20220234

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Optimization of the tread plate-spring structure of flexible metal wheel with plate-spring

Jing-fu JIN1(),Xin-ju DONG1,Zhi-cheng JIA1,Kang WANG2,Lian-bin HE1,Meng ZOU1,Ying-chun QI1()   

  1. 1.College of Biological and Agricultural Engineering，Jilin University，Changchun 130022，China
    2.Beijing Institute of Spacecraft System Engineering，China Academy of Space Technology，Beijing 100094，China
  • Received:2022-03-15 Online:2023-04-01 Published:2023-04-20
  • Contact: Ying-chun QI E-mail:jinjingfu@jlu.edu.cn;qiyc@jlu.edu.cn

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Abstract:

To solve the problem that conventional flexible metal wheels with plate-spring simply have stress concentrations or plastic deformation， the cause of stress concentrations and large deformations in the tread is analyzed. The three-dimensional models of conventional arched tread and bilateral curved tread structure are established. And the deformation and load of the two treads are simulated under three working conditions of flat pressure， middle tread pressure and unilateral tread pressure by using finite element analysis method. The analysis shows that the restrained connection method of the ends of the tread will affect the stress situation of the tread and cause the excessive local rigidity or insufficient load capacity of the tread. According to the simulation results， the coupled flexible tread structure is proposed. The structure that restricts the ends of the tread has been changed. The radial displacement of the tread is transferred to the axial outward tension of the hub， and then the radial displacement is expanded by the axial displacement. Finite element simulation shows that the coupled flexible tread structure can obtain same greater radial deformation under all the three working conditions， and the tread has uniform rigidity， continuous deformation and no stress concentration area. The result shows that the coupled flexible tread structure can effectively expand the radial displacement capacity of the wheel， and the tread has sufficient rigidity， which verifies the advantages of designing the coupled flexible tread structure.

Key words: plate-spring metal wheels, tread characteristics, coupling flexible tread, structural design, numerical simulation

CLC Number: 

  • V19

Fig.1

Flexible spoke wheel"

Fig.2

Flexible tread wheel"

Fig.3

Deformation trend of the plate-spring with therestrained tread ends"

Fig.4

Model of conventional flexible tread wheel structure"

Fig.5

Load and support of arch tread structure underthree different working conditions"

Fig.6

Total deformation and equivalent stress distribution of 2 models under working condition 1"

Fig.7

Total deformation and equivalent stress distribution of 2 models under working condition 2"

Fig.8

Total deformation and equivalent stress distribution of 2 models under working condition 3"

Fig.9

Deformation trend of plate-spring with coupled flexible tread structure"

Fig.10

Coupled flexible tread wheel structure model"

Fig.11

Total deformation and equivalent stress distribution of coupled flexible tread model underworking condition 1"

Fig.12

Total deformation and equivalent stress distribution of coupled flexible tread model underworking condition 2"

Fig.13

Total deformation and equivalent stress distribution of coupled flexible tread model under working condition 3"

Fig.14

Design figure of wheel"

Fig.15

Load-deformation behavior for wheel"

Fig.16

Deformation of coupled flexible tread structureduring load"

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