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18 July 2023 Study on the load distribution of main bearing of full-face rock tunnel boring machine under composite rock layer
Peng Zhou, Lei Yu, Zinan Wang, Enguang He
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Proceedings Volume 12744, Second International Conference on Advanced Manufacturing Technology and Manufacturing Systems (ICAMTMS 2023); 1274426 (2023) https://doi.org/10.1117/12.2688793
Event: Second International Conference on Advanced Manufacturing Technology and Manufacturing Systems (ICAMTMS 2023), 2023, Nanjing, China
Abstract
In order to study the main bearing load distribution of full-face rock tunnel boring machine under composite rock layer conditions, this paper establishes a cutter load synthesis model and a main bearing load distribution model under composite rock layer conditions in combination with the rock breaking mechanism of the hob, and studies the influence of composite rock layer conditions on the external load and internal load distribution of the main bearing respectively, and proposes the concept of the ratio of the degree of differentiation of composite rock layer based on the influence of composite rock layer on the load distribution of the main bearing. The research results show that the composite rock layer working condition makes the tilting moment of the main bearing increase greatly. With the increase of the ratio of the degree of composite rock layer differentiation, the internal load of the main bearing is gradually transferred from the main thrust roller to the reverse thrust roller. When the ratio of the degree of differentiation of the composite rock layer is greater than 0.262, the reverse thrust roller starts to be stressed.
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Peng Zhou, Lei Yu, Zinan Wang, and Enguang He "Study on the load distribution of main bearing of full-face rock tunnel boring machine under composite rock layer", Proc. SPIE 12744, Second International Conference on Advanced Manufacturing Technology and Manufacturing Systems (ICAMTMS 2023), 1274426 (18 July 2023); https://doi.org/10.1117/12.2688793
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KEYWORDS
Deformation
Mathematical modeling
Engineering
Safety
Vibration
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