WO2018208008A1 - Air hammer bit for crushing reinforced concrete structure - Google Patents
Air hammer bit for crushing reinforced concrete structure Download PDFInfo
- Publication number
- WO2018208008A1 WO2018208008A1 PCT/KR2018/003525 KR2018003525W WO2018208008A1 WO 2018208008 A1 WO2018208008 A1 WO 2018208008A1 KR 2018003525 W KR2018003525 W KR 2018003525W WO 2018208008 A1 WO2018208008 A1 WO 2018208008A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cutting block
- enlarged diameter
- diameter portion
- reinforced concrete
- bit
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
- B28D1/146—Tools therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
Definitions
- the present invention relates to an air hammer bit used to crush reinforced concrete structures, characterized in that the cutting function is provided to easily cut the steel bars included in the concrete structure during the crushing process.
- the ground excavator used for the ground excavation is to excavate the ground by using the screw shaft rotated by the motor. If the hard rock layer is encountered during the excavation of the ground, the excavation work is not possible with the screw shaft alone. Installing an air hammer drill having a rock drilling bit (Bit) and using this to crush the rock layer to proceed the excavation work.
- Such a conventional rock drilling bit 100 is composed of a bit shaft 110 and the enlarged diameter portion 120 formed at the lower end thereof, as shown in Figure 1, the outer peripheral surface of the enlarged diameter portion 120
- a guide groove 220 is provided to be a passage for carrying, and the lower surface and the outer circumferential surface of the enlarged diameter portion are inserted and fixed to the enlarged diameter portion so that a plurality of carbide tips 210 protrude.
- the cemented carbide tip 210 is a cemented carbide that is generally used to maintain sufficient durability and strength as a site that directly contacts the rock layer when the rock layer is crushed.
- the present invention created to solve the above problems is to provide an air hammer bit of a new structure that can perform a fast and safe crushing work by cutting the steel bars included in the structure in the process of crushing the reinforced concrete structure It is done.
- the present invention relates to an air cylinder operated by pneumatic, a piston for vertical movement in the inside of the air cylinder, and a bit of the air hammer for drilling the reinforced concrete structure through vibration and rotation up and down in combination with the piston, the body of the bit A bit axis 100 which serves; An enlarged diameter part 200 having a diameter extended from a lower end of the bit axis 100; A plurality of cemented carbide tips 300 inserted into the surface of the enlarged diameter portion 200 to protrude; And a cutting block 400 detachably coupled to the enlarged diameter part 200 and protruding to the surface of the enlarged diameter part 200 to cut the reinforcing bar in the crushing process of the concrete structure. do.
- Figure 2 shows a side structure of the specific embodiment of the present invention, along with the AA 'partial section of Figure 3;
- Figure 3 shows a partial cross-sectional view of the lower surface and part of the cutting block 400 of a specific embodiment of the present invention.
- FIG 4 shows that the left and right widths of the cutting block 400 are tapered.
- FIGS. 2 to 4 are drawings related to the present invention except for FIG.
- the present invention relates to an air cylinder operated by pneumatic, a piston that moves up and down inside the air cylinder, and a bit of an air hammer coupled to the piston to crush the reinforced concrete structure through vertical vibration and rotation.
- the present invention includes a bit axis 100, enlarged diameter portion 200, cemented carbide tip 300, and cutting block 400. As shown in FIG.
- the bit shaft 100 serves as a body of the bit, and the lower end portion of the bit shaft 100 is provided with an enlarged diameter part 200 having an expanded diameter.
- the lower surface and the outer circumferential surface of the enlarged diameter portion 200 is provided with a guide groove 22 for carrying the crushed crushed material, the guide groove 22 penetrates the bit shaft 100 and the inside of the enlarged diameter portion 200
- the structure is connected to the air passage 11 can be more conveniently discharged to the outside by the force of the air (Air) that is ejected through the air passage (11).
- Carbide tip 300 is inserted so that a plurality of protruding on the surface of the enlarged diameter portion 200, such a carbide tip 300 is a site that is in direct contact with the rock contact in the general excavation work is required for strong durability and strength cemented carbide Is produced by.
- the cemented carbide tip 300 collides directly with the reinforced concrete structure, thereby crushing concrete.
- Cutting block 400 is detachably coupled to the enlarged diameter portion 200, the upper end of the cutting block 400 protrudes to the surface of the enlarged diameter portion 200 serves to cut the reinforcing bar in the process of crushing the concrete structure.
- the lower portion of the enlarged diameter portion 200 is composed of a central plane 210 formed in the lower center as shown in Figures 2 and 3 and the inclined surface 220 surrounding the central plane 210, cutting block 400
- the four cutting blocks 400 are radially arranged along the inclined surface 220 at intervals of 90 degrees.
- the number of the cutting blocks 400 is not limited to four, but one is considered in consideration of the work site. , Two, three or four or more may be arranged.
- the cutting block 400 is a lower end inserted into the inclined surface 220 at the upper end exposed to the outside of the inclined surface 220 of the enlarged diameter portion 200 as shown in FIG. It has a cross section which increases in cross section.
- the inclined surface 220 of the enlarged diameter portion 200 is provided with a cutting block mounting groove 230 of a shape corresponding to the cutting block 400, the cutting block 400 is mounted in the cutting block mounting groove 230
- the upper end of the cutting block 400 has a front end in the direction in which the enlarged diameter portion 200 rotates higher than the rear end, so as to protrude outward from the inclined surface 220 of the enlarged diameter portion 200 to cut the reinforcing bars in the crushing process. It serves as a cutting blade.
- the cutting block mounting groove 230 is tapered in a form in which the left and right widths gradually decrease from the upper side of the inclined surface 220 of the enlarged diameter portion 200 to the lower portion that meets the central plane 210, as shown in FIG.
- the cutting block 400 is also tapered so that the left and right widths gradually decrease toward the center plane 210 of the enlarged diameter part 200 as shown in FIG. 4 to correspond to the cutting block mounting groove 230.
- the cutting block 400 when the cutting block 400 and the cutting block mounting groove 230 are tapered, the cutting block 400 can be easily pushed and mounted from the upper portion of the cutting block mounting groove 230 to the lower side. As the block 400 is in close contact with the inner surface of the cutting block mounting groove 230, the cutting block 400 may be stably mounted, thereby improving durability of the cutting block 400.
- the cutting block 400 penetrates through the cutting block 400 in a state in which the cutting block 400 is inserted into the cutting block mounting groove 230 as shown in FIG. 2 or 3 to the bottom surface of the cutting block mounting groove 230. It is fixed by the fastening bolt 410 is fastened to the cutting block 400, the diameter of the through-hole passing through the fixing bolt 410 is processed more easily than the diameter of the fixing bolt 410 to absorb the manufacturing and assembly tolerances To help.
- the cutting block 400 is provided to maximize the efficiency of the shredding operation by cutting the reinforcing bar when the reinforced concrete structure is shredded.
- the cutting block 400 of the cutting block mounting groove 230 with the improvement of convenience of the cutting block 400 mounting work
- the durability of the cutting block 400 and the enlarged diameter part 200 may be improved.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Earth Drilling (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
Description
Claims (5)
- 공압에 의하여 작동하는 에어실린더, 에어실린더의 내부에서 상하운동을 하는 피스톤, 및 피스톤과 결합하여 상하진동과 회전을 통하여 철근 콘크리트 구조물을 파쇄하는 에어 해머의 비트에 관한 것으로서,An air cylinder actuated by pneumatic pressure, a piston that moves up and down inside the air cylinder, and a bit of an air hammer combined with the piston to crush the reinforced concrete structure through vertical vibration and rotation,비트의 몸체 역할을 하는 비트축(100);A bit axis 100 serving as a body of the bit;상기 비트축(100)의 하단부에서 직경이 확장되어 이루어진 확경부(200);An enlarged diameter part 200 having a diameter extended from a lower end of the bit axis 100;상기 확경부(200)의 표면에 돌출되도록 삽입되는 다수 개의 굴삭용 초경팁(300); 및,A plurality of cemented carbide tips 300 inserted into the surface of the enlarged diameter portion 200 to protrude; And,상기 확경부(200)에 탈착 가능하게 결합되며, 상기 확경부(200)의 표면으로 돌출되어 콘크리트 구조물의 파쇄 과정에서 철근을 절단하는 커팅블럭(400);A cutting block 400 detachably coupled to the enlarged diameter part 200 and protruding to the surface of the enlarged diameter part 200 to cut reinforcing bars in the crushing process of the concrete structure;을 포함하여 구성되는 것을 특징으로 하는 철근 콘크리트 구조물 파쇄용 에어 해머 비트.Air hammer bits for reinforcing reinforced concrete structures, characterized in that comprising a.
- 제1항에서,In claim 1,상기 확경부(200)의 하부는,The lower portion of the enlarged diameter portion 200,중앙평면(210)과 상기 중앙평면(210) 주위를 둘러싸는 경사면(220)으로 이루어지며,A center plane 210 and an inclined surface 220 surrounding the center plane 210,상기 커팅블럭(400)은 상기 경사면(220)을 따라 방사상으로 다수 배열되는 것을 특징으로 하는 철근 콘크리트 구조물 파쇄용 에어 해머 비트.The cutting block 400 is air hammer bits for crushing reinforced concrete structure, characterized in that a plurality of radially arranged along the inclined surface (220).
- 제2항에서,In claim 2,상기 커팅블럭(400)은,The cutting block 400,상기 확경부(200)의 경사면(220) 외측으로 노출되는 상단부에서 하단부로 갈수록 단면적이 증가하고, The cross-sectional area increases from the upper end portion exposed to the outer side of the inclined surface 220 of the enlarged diameter portion 200 toward the lower end portion,상기 확경부(200)의 경사면(220)에는 상기 커팅블럭(400)과 대응하는 형태의 커팅블럭장착홈(230)이 구비되고,The inclined surface 220 of the enlarged diameter portion 200 is provided with a cutting block mounting groove 230 of a shape corresponding to the cutting block 400,상기 커팅블럭(400)의 상단부는 상기 확경부(200)가 회전하는 방향의 전단이 후단보다 높아 확경부(200)의 경사면(220) 외측으로 돌출되는 구조인 것을 특징으로 하는 철근 콘크리트 구조물 파쇄용 에어 해머 비트.For cutting the reinforced concrete structure, the upper end of the cutting block 400 is a structure in which the front end in the direction in which the enlarged diameter portion 200 rotates is higher than the rear end and protrudes outward from the inclined surface 220 of the enlarged diameter portion 200. Air Hammer Bits.
- 제3항에서,In claim 3,상기 커팅블럭장착홈(230)은,The cutting block mounting groove 230,상기 확경부(200)의 경사면(220) 상부에서 중앙평면(210)과 만나는 하부로 갈수록 좌우 폭이 점차 감소하는 형태이며,The left and right widths gradually decrease from the inclined surface 220 of the enlarged diameter portion 200 toward the lower portion that meets the central plane 210.상기 커팅블럭(400)도 상기 커팅블럭장착홈(230)과 대응하도록 상기 확경부(200)의 중앙평면(210)으로 갈수록 좌우 폭이 점차 감소하는 형태인 것을 특징으로 하는 철근 콘크리트 구조물 파쇄용 에어 해머 비트.The cutting block 400 also has a form in which the left and right widths gradually decrease toward the center plane 210 of the enlarged diameter portion 200 so as to correspond to the cutting block mounting groove 230, the air for crushing reinforced concrete structures Hammer beat.
- 제3항 또는 제4항에서,The method of claim 3 or 4,상기 커팅블럭(400)은,The cutting block 400,상기 커팅블럭장착홈(230)에 슬라이딩 방식으로 삽입된 상태에서 상기 커팅블럭(400)을 관통하여 상기 커팅블럭장착홈(230)의 바닥면에 체결되는 고정볼트(410);A fixing bolt 410 fastened to the bottom surface of the cutting block mounting groove 230 by penetrating the cutting block 400 in a state of being inserted into the cutting block mounting groove 230 in a sliding manner;에 의하여 고정되는 것을 특징으로 하는 철근 콘크리트 구조물 파쇄용 에어 해머 비트.Air hammer bits for crushing reinforced concrete structures, characterized in that fixed by.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019561223A JP6889823B2 (en) | 2017-05-11 | 2018-03-26 | Air hammer bit for crushing reinforced concrete structures |
CN201880030448.4A CN110637138B (en) | 2017-05-11 | 2018-03-26 | Air hammer drill bit for breaking reinforced concrete structure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020170058732A KR102011791B1 (en) | 2017-05-11 | 2017-05-11 | Air Hammer Bit for Crushing Reinforced Concrete Construction |
KR10-2017-0058732 | 2017-05-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018208008A1 true WO2018208008A1 (en) | 2018-11-15 |
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ID=64105611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2018/003525 WO2018208008A1 (en) | 2017-05-11 | 2018-03-26 | Air hammer bit for crushing reinforced concrete structure |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP6889823B2 (en) |
KR (1) | KR102011791B1 (en) |
CN (1) | CN110637138B (en) |
WO (1) | WO2018208008A1 (en) |
Citations (5)
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JP2006326996A (en) * | 2005-05-25 | 2006-12-07 | Hitachi Koki Co Ltd | Drill bit |
JP4358164B2 (en) * | 2005-07-20 | 2009-11-04 | 株式会社奥村組 | Drilling bit |
JP4514359B2 (en) * | 2001-04-26 | 2010-07-28 | 株式会社タンガロイ | Drilling bit |
JP5461253B2 (en) * | 2010-03-16 | 2014-04-02 | 新日鐵住金株式会社 | Drilling machine for reinforced concrete body and method for drilling in reinforced concrete body |
KR101536674B1 (en) * | 2014-03-20 | 2015-07-14 | 박영택 | Bolt Joint Type Air Hammer Bit |
Family Cites Families (12)
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JPS586952Y2 (en) * | 1978-11-16 | 1983-02-07 | 三菱マテリアル株式会社 | bit |
JP2734479B2 (en) * | 1989-12-15 | 1998-03-30 | 三菱重工業株式会社 | Core cutlet |
JPH06264677A (en) * | 1993-03-10 | 1994-09-20 | Kowa Sangyo Kk | Excavating bit for down-hole hammer |
DE19916975A1 (en) * | 1999-04-15 | 2000-10-19 | Hilti Ag | Rock drill |
JP3777890B2 (en) * | 1999-07-28 | 2006-05-24 | 三菱マテリアル株式会社 | Drilling tools |
JP2002155692A (en) * | 2000-11-20 | 2002-05-31 | Koken Boring Mach Co Ltd | Bit for percussion excavation and retracting bit |
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CN201396073Y (en) * | 2009-03-16 | 2010-02-03 | 美国钻采系统(南京)有限公司 | Compensatory boring bit |
WO2012039630A1 (en) * | 2010-09-21 | 2012-03-29 | Flexidrill Limited | Hybrid drill bit |
JP5762877B2 (en) * | 2011-06-30 | 2015-08-12 | 株式会社 中部ロックドリルサービス | Drilling bit, excavator and concrete structure using the same, rock drilling method and crushing method |
CN203835273U (en) * | 2013-12-23 | 2014-09-17 | 中海油安全技术服务有限公司 | Air hammer drill bit with protective surfaces embedded with PDC cutting teeth |
-
2017
- 2017-05-11 KR KR1020170058732A patent/KR102011791B1/en active IP Right Grant
-
2018
- 2018-03-26 JP JP2019561223A patent/JP6889823B2/en active Active
- 2018-03-26 WO PCT/KR2018/003525 patent/WO2018208008A1/en active Application Filing
- 2018-03-26 CN CN201880030448.4A patent/CN110637138B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4514359B2 (en) * | 2001-04-26 | 2010-07-28 | 株式会社タンガロイ | Drilling bit |
JP2006326996A (en) * | 2005-05-25 | 2006-12-07 | Hitachi Koki Co Ltd | Drill bit |
JP4358164B2 (en) * | 2005-07-20 | 2009-11-04 | 株式会社奥村組 | Drilling bit |
JP5461253B2 (en) * | 2010-03-16 | 2014-04-02 | 新日鐵住金株式会社 | Drilling machine for reinforced concrete body and method for drilling in reinforced concrete body |
KR101536674B1 (en) * | 2014-03-20 | 2015-07-14 | 박영택 | Bolt Joint Type Air Hammer Bit |
Also Published As
Publication number | Publication date |
---|---|
JP2020521895A (en) | 2020-07-27 |
CN110637138B (en) | 2021-11-12 |
KR102011791B1 (en) | 2019-08-19 |
JP6889823B2 (en) | 2021-06-18 |
KR20180124364A (en) | 2018-11-21 |
CN110637138A (en) | 2019-12-31 |
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