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US 2015/0308268 A1Published application
Segment roundness measuring device and segment roundness measuring method
AssigneeHitachi Zosen Corporation
InventorToshiyuki Okada
Life of this patent
Estimating the term…
Abstract
A segment roundness measuring device including a correction means that corrects the positional deviation of the turning center of an erector turning portion resulting from eccentricity on the basis of an angle detected by an angle detector and distances measured by three or more distance meters arranged at angular positions different from each other in the erector turning portion.
Claims8
A segment roundness measuring device comprising:
- an angle detector that detects a turning angle of an erector turning portion, a turning center of which is eccentric;
- three or more distance meters that are arranged at angular positions different from each other in the erector turning portion and measure distances to an inner surface of a segment ring obtained by assembling segments in a ring shape;
- and
- correction means that corrects a positional deviation of the turning center of the erector turning portion resulting from eccentricity on the basis of the angle detected by the angle detector and the distances measured by the three or more distance meters.
1 more element
A segment roundness measuring method comprising steps of:
- detecting a turning angle of an erector turning portion, a turning center of which is eccentric and measuring distances to an inner surface of a segment ring at the same turning angle as the turning angle that has been detected by three or more distance meters arranged at angular positions different from each other in the erector turning portion;
- and
- correcting a positional deviation of the turning center of the erector turning portion resulting from eccentricity by carrying out averaging on the basis of distance measurement values measured by the three or more distance meters at the same turning angle of the erector turning portion.
Dependencies are inferred from the claim text.