Title:
拡径装置及び拡径方法
Document Type and Number:
Japanese Patent JP7162552
Kind Code:
B2
Abstract:
To provide a diameter expansion device capable of accurately and efficiently expanding a diameter of a drilling hole formed for an underground continuous wall with a simple constitution.SOLUTION: A diameter expansion device 1 for expanding a diameter of a drilling hole for forming an underground continuous wall includes: a reamer 2 which forms an expanded diameter hole larger than a width in a traverse direction of the drilling hole by rotation; a guide 10 which is mounted above the reamer and is formed so as to be slid while being brought into contact with the expanded diameter hole; and a bucket 20 which is mounted below the reamer, is formed so that the width in the longitudinal direction is larger than a diameter of the expanded diameter hole and is formed so that the traverse direction is slid while being brought into contact in the traverse direction of the drilling hole.SELECTED DRAWING: Figure 1
Inventors:
Hideyuki Mano
Application Number:
JP2019030683A
Publication Date:
October 28, 2022
Filing Date:
February 22, 2019
Export Citation:
Assignee:
Shimizu Construction Co., Ltd.
International Classes:
E02D5/18; E02D5/20; E02F5/20
Domestic Patent References:
| JP2004044083A | ||||
| JP2002146775A | ||||
| JP2221518A | ||||
| JP2006342614A |
Attorney, Agent or Firm:
Yasushi Matsunuma
Kenichi Kawabuchi
Kazuzumi Nishizawa
Kenichi Kawabuchi
Kazuzumi Nishizawa
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