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TUNNEL BORING MACHINE

  • US 20180258765A1
  • Filed: 12/01/2015
  • Published: 09/13/2018
  • Est. Priority Date: 01/13/2015
  • Status: Active Grant
First Claim
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1. A tunnel boring machine comprising:

  • a cutter head;

    a cutter support supporting the cutter head and configured to rotate with the cutter head;

    a cutter driving unit configured to rotationally drive the cutter head and the cutter support;

    a rotational position sensing unit configured to sense a position of the cutter head in a rotational direction;

    at least one strain sensor provided in a cutter spoke itself of the cutter head or the cutter support; and

    a data processing unit configured to calculate a force acting on the cutter head in association with the position of the cutter head in the rotational direction, based on sensing results of the at least one strain sensor and the rotational position sensing unit.

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