Title:
DISPLACEMENT MEASURING STRUCTURE OF FRICTION CUT MEMBER
Document Type and Number:
Japanese Patent JP2019173380
Kind Code:
A
Abstract:
To provide a displacement measuring structure capable of detecting a displacement of a friction cut member accurately and promptly with a simple configuration when a box structure is propelled in a box propulsion method.SOLUTION: A displacement measuring structure is constituted by including: a wire-like member 11 which has both ends supported by side retaining walls 31 disposed on both sides of a facing retaining wall 30 facing a propulsion direction X of a box structure 44 in a start shaft 40 and is stretched in the vicinity of the facing retaining wall 30 in an upper portion of the box structure 44; a plurality of target members 12 attached to the wire-like member 11 at intervals in the extending direction of the wire-like member 11; and a plurality of laser range finders 13 installed on an overhanging portion 45a overhanging toward the start shaft 40 of a friction cut member 45 and arranged to face each target member 12. The wire-like member 11 is stretched in a state of being covered with a windproof tube 14 in which an opening window 14a is formed at a position where the target member 12 is disposed.SELECTED DRAWING: Figure 1
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Inventors:
KAMEI HIROKATSU
YAMAZAKI YOSHIHIRO
MATSUURA HIDEKI
IKUTA MITSUTERU
KAWASHIMA EISUKE
MARUTA SHINICHI
NAKAMURA TOMOYA
YAMAZAKI YOSHIHIRO
MATSUURA HIDEKI
IKUTA MITSUTERU
KAWASHIMA EISUKE
MARUTA SHINICHI
NAKAMURA TOMOYA
Application Number:
JP2018062712A
Publication Date:
October 10, 2019
Filing Date:
March 28, 2018
Export Citation:
Assignee:
OKUMURA CORP
UEMURA GIKEN KOGYO KK
UEMURA GIKEN KOGYO KK
International Classes:
E21D9/04; E21D9/06
Attorney, Agent or Firm:
Showa International Patent Office