| Design and Research of Double Compound Bushing |
| Received:June 04, 2021 Revised:June 04, 2021 |
| DOI：10.12136/j.issn.1000-890X.2022.07.0483 |
| Key Words: double compound bushing；self lubricating；high damping；double-material injection machine；stiffness；fatigue resistance；noise reduction performance |
| Author Name | Affiliation | E-mail | | LU Weiqiang* | Ningbo Tuopu Group Co.，Ltd | lwq@tuopu.com | | YU Chao | Ningbo Tuopu Group Co.，Ltd | |
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| Abstract: |
| The design of double compound bushing was introduced. Double compound bushings were divided into two types according to their functions：self lubricating type and high damping type.The main spring compound of the former adopted the compound of single compound bushing，which had the characteristics of high strength and good durability.The collision block compound which had the characteristics of small surface friction factor was made of natural rubber and butadiene rubber blend with an internal lubricant.The second spring compound of the latter was different from the main sping compound，which was the blend of natural rubber/solution styrene-butadiene rubber to realize the adjustment of two way damping characteristics.The test results showed that the double compound bushing was formed by double-material injection machine，which could be optimized and adjusted in terms of mold，compound and injection process.The fatigue resistance and noise reduction performance of the self lubricating double
compound bushing were better than those of the single compound bushing，and it’s easier to make adjustment on the dynamic and static stiffness. |
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