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Force analysis of an open TBM gripping–thrusting–regripping mechanism

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Huang, Tian, Wang, Xiaolong, Liu, Haitao and Yang, Yuhu (2016) Force analysis of an open TBM gripping–thrusting–regripping mechanism. Mechanism and Machine Theory, 98 . pp. 101-113. doi:10.1016/j.mechmachtheory.2015.12.003 ISSN 0094-114X.

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Official URL: http://dx.doi.org/10.1016/j.mechmachtheory.2015.12...

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Abstract

This paper presents an approach for the force analysis of an open TBM gripping–thrusting–regripping mechanism, which is a special parallel mechanism driven by hydraulic actuators and constrained by rocky surroundings. The static equilibrium equations of the cutterhead–mainbeam–saddle subassembly are formulated first by exploring the reaction forces in the cross pin situated between the saddle and the gripper cylinder. This is followed by formulating the static equilibrium equations of the inner closed loops formed by the above subassembly, the torque, and gripper cylinders. Consequently, the linear map between the externally applied wrench imposed on the shield and the equivalent thrust forces of the cylinders is developed. The functionality of the force model developed is twofold, i.e., it can be used either to estimate the thrust forces of the cylinders required to resist against the tunneling loads, or to predict the tunneling loads using the measured thrust forces of these cylinders, thus providing important theoretical basis for the design and control of the mechanism.

Item Type: Journal Article
Subjects: T Technology > TD Environmental technology. Sanitary engineering
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Boring machinery
Journal or Publication Title: Mechanism and Machine Theory
Publisher: Pergamon-Elsevier Science Ltd.
ISSN: 0094-114X
Official Date: April 2016
Dates:
DateEvent
April 2016Published
4 January 2016Available
9 December 2015Accepted
23 July 2015Submitted
Volume: 98
Number of Pages: 13
Page Range: pp. 101-113
DOI: 10.1016/j.mechmachtheory.2015.12.003
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 23 March 2016
Date of first compliant Open Access: 4 January 2017
Funder: China. Jiao yu bu [Ministry of Education]
Grant number: 2013CB035403, 2012AA041803

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