Title:
MEASUREMENT SYSTEM
Document Type and Number:
Japanese Patent JP2020090798
Kind Code:
A
Abstract:
To provide a measurement system capable of measuring a three-dimensional surface profile of an un-excavated portion in real time.SOLUTION: A measurement system 40 for measuring the surface profile of an un-excavated portion in the periphery of a work chamber in the bottom of a caisson buried in the pneumatic caisson method in real time comprises: a swivel angle measuring instrument 62 for measuring the swivel angle of a swivel body of an excavator in real time; a distance and elevation/depression angle measuring instrument 63 that is installed on the swivel body of the excavator and measures distance to the incidence point of a laser beam and the angles of elevation and depression in an irradiation direction of the laser beam in real time by radiating the laser beam toward the periphery of the work chamber; and a computer 41 for calculating the position of a point on the surface of the un-excavated portion, or on an inner peripheral surface or ceiling plane of the work chamber in real time on the basis of the measured values of the swivel angle measuring instrument 62 and the distance and elevation/depression angle measuring instrument 63.SELECTED DRAWING: Figure 3
Inventors:
INAGAWA YUSEN
NAKAMURA KIYOSHI
YANAGI SHINONOME
FUJISAWA HIDEYUKI
OGATA TSUNEO
TACHIBANA SHINICHI
NAKAMURA KIYOSHI
YANAGI SHINONOME
FUJISAWA HIDEYUKI
OGATA TSUNEO
TACHIBANA SHINICHI
Application Number:
JP2018226786A
Publication Date:
June 11, 2020
Filing Date:
December 03, 2018
Export Citation:
Assignee:
OHBAYASHI CORP
OHMOTO GUMI CO LTD
OHMOTO GUMI CO LTD
International Classes:
E02D23/08; E02D23/04
Attorney, Agent or Firm:
Isshiki International Patent Service Corporation