Title:
鉄筋コンクリート構造物破砕用エアーハンマービット
Document Type and Number:
Japanese Patent JP6889823
Kind Code:
B2
Abstract:
The present invention relates to an air cylinder which operates by a pneumatic pressure, a piston which moves up and down in the interior of the air cylinder, and an air hammer bit which is coupled to the piston and crushes a reinforced concrete structure through up and down vibration and rotation, the air hammer bit comprising: a bit shaft (100) which serves as a body of a bit; an enlarged diameter part (200) having a diameter expanded at the lower end of the bit shaft (100); a plurality of excavating carbide tips (300) which are inserted to protrude on the surface of the enlarged diameter part (200); and a cutting block (400) which is detachably coupled to the enlarged diameter part (200) and protrudes to the surface of the enlarged diameter part (200) so as to cut a reinforcing bar in the process of crushing a concrete structure.
Inventors:
Park Young-tech
Application Number:
JP2019561223A
Publication Date:
June 18, 2021
Filing Date:
March 26, 2018
Export Citation:
Assignee:
Park Young-tech
International Classes:
E04G23/08; B24D7/18; B25D17/02; B28D1/26; E21B6/00
Domestic Patent References:
| JP2001040976A | ||||
| JP2007023690A | ||||
| JP6264677A | ||||
| JP3187491A | ||||
| JP2013032669A | ||||
| JP55076291U | ||||
| JP2002155692A |
Foreign References:
| KR101536674B1 | ||||
| WO2012039630A1 | ||||
| CN203835273U | ||||
| WO2004111381A1 |
Attorney, Agent or Firm:
Ashikita Tomoharu