Journal of Jilin University(Engineering and Technology Edition) ›› 2025, Vol. 55 ›› Issue (1): 382-391.doi: 10.13229/j.cnki.jdxbgxb.20230200

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Bionic design and adsorption performance analysis of vacuum sucker

Peng XI1(),Qian CONG2(),Shao-bo YE1,Hong-bo LI1,Yan-qing ZHANG1   

  1. 1.College of Agricultural Engineering，Shanxi Agricultural University，Jinzhong 032699，China
    2.College of Biological and Agricultural Engineering，Jilin University，Changchun 130022，China
  • Received:2023-03-07 Online:2025-01-01 Published:2025-03-28
  • Contact: Qian CONG E-mail:13029127775@163.com;yydljxp2000@126.com

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Abstract:

The adsorption performance of bionic sucker based on the excellent adsorption of abalone abdominal foot was studied from the perspective of bionics. The surface morphology of the abdominal foot was extracted to design the bionic sucker， and the adsorption of the sucker was simulated and analyzed. The bionic sucker with good adsorption was selected for tensile test， and the adsorption mechanism was explored according to the experimental results. The width of the sealing ring has a great effect on the Mises stress of the bionic sucker， while the distance between the groove and the center of the sucker and the number of grooves distribution have little effect. The stress on the sucker bottom with a sealing ring width of 1.5 mm is greater than that of the bionic sucker with a width of 3 mm. The bionic sucker with the width of sealing ring of 1.5 mm， the distance between groove and center of sucker of 20 mm， and the number of grooves distributed is 12 has the largest adsorption force under 40% vacuum degree， and its maximum adsorption force is 5.32% higher than that of standard sucker. The bionic sucker can improve the adsorption performance of the sucker. The bionic sucker sealing ring structure can effectively prevent the edge of the sucker from shrinking inward and the groove structure can delay the connection between the inner cavity of the sucker and the outside， which is the key to improving the adsorption performance of the sucker.

Key words: engineering bionics, sucker, abalone, sealing ring, stripe groove, adsorption

CLC Number: 

  • TB17

Fig.1

Structural parameters of standard sucker"

Fig.2

3D model of the standard sucker （part sectioned view）"

Fig.3

Annular mounds and striped grooves of abalone abdominal foot"

Table 1

Dimension parameter design based on bionic sucker characteristics"

仿生吸盘

编号

第一特征

密封环宽度/mm

第二特征
沟槽距吸盘 中心距离/mm沟槽 分布数量
11.51224
21.51220
31.51215
41.51212
51.52024
61.52020
71.52015
81.52012
931224
1031220
1131215
1231212
1332024
1432020
1532015
1632012
标准吸盘000

Fig.4

Comparison of three-dimensional models of different types of bionic suckers"

Fig.5

Five areas for measuring the Mises stress of sucker"

Table 2

Mises stress of suckers in different regions"

吸盘类别区域
12345
仿生1号87 40341 14145 474258 36028 847
仿生2号85 27653 01770 338259 77031 627
仿生3号86 41233 74849 430263 64033 502
仿生4号91 85940 64649 804259 45027 217
仿生5号89 24640 17430 462293 41026 033
仿生6号97 16044 44163 827281 63023 956
仿生7号94 94643 52434 078286 28027 885
仿生8号93 38839 55253 890289 34026 849
仿生9号82 32735 38754 487231 04028 748
仿生10号84 82235 21062 196213 63032 504
仿生11号92 75831 61277 550205 75040 407
仿生12号91 47034 73259 046221 75029 323
仿生13号86 83134 46859 992222 95010 439
仿生14号97 37537 32952 451208 70038 393
仿生15号97 53247 71447 961215 89047 215
仿生16号94 07542 59456 051214 23037 651
标准吸盘35 20038 80045 70053 00057 200

Fig.6

Mises stress curves of bionic suckers with different number of grooves"

Fig.7

Mises stress of bionic suckers at area 1 and area 4"

Fig.8

Mises stress curves of bionic suckers with different distances from groove to sucker center"

Fig.9

Mises stress curves of bionic suckers with different sealing ring widths"

Fig.10

Comparison of standard sucker and No.5~8 bionic sucker samples"

Fig.11

Vacuum sucker adsorption test bench"

Table 3

Adsorption force of standard and bionic"

吸盘类别

实验次数

标准

吸盘

仿生

5号

仿生

6号

仿生

7号

仿生

8号

141.8541.5638.5243.7543.84
242.6142.9938.6242.5145.46
342.4242.5137.141.1845.17
441.6643.0841.2841.5643
541.8542.4240.9943.8444.13
平均值42.07842.51239.342.56844.32
百分比/%10010193.4101105

Fig.12

Whole deformation process of sucker bottom surface in adsorption test"

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