Title:
掘削翼表面に鋳物製の掘削翼被覆耐摩耗部材が着脱自在に装着される地盤改良装置
Document Type and Number:
Japanese Patent JP6653092
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a covering member formed of an easily attachable/detachable wear-resistant member, as a countermeasure for wear of a drilling blade in a ground improvement device for forming a crushed stone pile.SOLUTION: A cast drilling blade covering wear-resistant member 30 is an integrated body formed by melting wear-resistant raw material and casting in a casting mold. Upon attachment to a drilling blade, a groove 31A of the cast drilling blade covering wear-resistant member 30 is fitted and attached to a cylindrical protrusion part of the drilling blade. Then, a bolt is inserted into a penetrated bolt insertion hole in the drilling blade, is fastened to a screw hole 32A provided in the drilling blade covering wear-resistant member 30, and thereby the drilling blade covering wear-resistant member 30 is surely and easily attached to the drilling blade. The drilling blade covering wear-resistant member 30 is attached to a pair of drilling blades before use.
Inventors:
Tetsuya Onabe
Application Number:
JP2014136276A
Publication Date:
February 26, 2020
Filing Date:
June 13, 2014
Export Citation:
Assignee:
Onabe Co., Ltd.
International Classes:
E02D3/08; E21B10/54
Domestic Patent References:
| JP2011006880A | ||||
| JP63009670Y2 | ||||
| JP3016957Y2 | ||||
| JP59121090U | ||||
| JP2010144347A | ||||
| JP8326460A | ||||
| JP52024002U | ||||
| JP7010093U | ||||
| JP58115592U |
Foreign References:
| US20040000432 |