Abstract
The loads on the cutterhead will vary with the mechanical properties and the compositions of geologic structures on the excavation face. It is necessary that the reconfiguration design of the redundant thrust system for various geologic formations is conducted to improve the load compliance ability effectively, which is beneficial to decrease the excessive wear and the other accidents. In this paper, a 4-bar parallel manipulator is established in terms of the control characteristic of the redundant thrust system of the shield machines. The location parameters of legs on the platform and the base are used as the variables to obtain the force transmission matrix between the limbs and the platform. The force transmission behavior is studied when the shields excavate in the alignment direction. Based on the cutting principle, the total bending moment model exerted on the cutterhead is proposed. The behavior of bending moments during excavating in the various geologic formations is studied. The correlation between the bending moments and the configuration is discussed. The results show that the configurations of the thrust manipulator may be selected in terms of the geologic structures. It is useful for the compliance design of the thrust system of shields.
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Yu, H., Liu, Z., Zhang, K., Lai, X. (2009). The Reconfiguration Design of Redundant Thrust of Shields Excavating in Various Geologic Conditions. In: Xie, M., Xiong, Y., Xiong, C., Liu, H., Hu, Z. (eds) Intelligent Robotics and Applications. ICIRA 2009. Lecture Notes in Computer Science(), vol 5928. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10817-4_32
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DOI: https://doi.org/10.1007/978-3-642-10817-4_32
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-10816-7
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