| Study on Performance of Main Bearing Sealing System for Tunnel Boring Machine |
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| DOI： |
| Key Words: oil seal；contact stress；finite element analysis |
| Author Name | Affiliation | | WANG Jia-ke | Jiangsu University | | WANG Shu-lin | Jiangsu University |
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| Abstract: |
| Based on finite element simulation of the main bearing oil seal for tunnel boring machine under working state，the sealing performance of the oil seal was investigated under different initial interference and working pressure.It was found that，for the sealing system，the maximum contact stress between the oil seal and shaft was always greater than the working oil pressure，which could ensure the sealing performance of oil seal. The contact stress distribution was linear (cone-shape) and the maximum contact stress was almost in the middle part，which affected the oil absorption ability of the oil seal and would reduce the sealing performance.The simulation results indicated that properly reducing the initial interference could decrease shaft wear on the sealing position and improve the service life of the oil seal. |
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