| Development and Engineering Application of Main Drive Super-large PU Sealing Ring of Shield Machine |
| Received:September 05, 2022 Revised:September 05, 2022 |
| DOI：10.12136/j.issn.1000-890X.2022.12.0932 |
| Key Words: polyurethane；main drive sealing ring；super-large sealing ring；shield machine；continuous vulcanization；finite element simulation；engineering application |
| Author Name | Affiliation | E-mail | | HE Qiping* | China Railway Construction Heavy Industry Co. ，Ltd | heqiping@crchi.com | | XU Jin | Beijing Jianke Huifeng Technology Co.，Ltd | |
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| Abstract: |
| Aiming at the problems existing in the production and application of the main drive superlarge
polyurethane（PU） sealing ring（PU sealing ring for short） of shield machine，the structure of the
main drive PU sealing ring of shield machine was simulated and optimized using the finite element analysis
software Ansys. The influence of main raw materials on the properties of PU elastomer was studied，the
production environment，supporting equipment，process and product evaluation platform of the main drive
PU sealing ring of shield machine were optimized，and a complete set of automatic continuous vulcanization
production technology was established，which ensured the quality stability of the main drive PU sealing ring
of shield machine and its good application effect in practical engineering. |
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