CN2053234U - Slotted drill bit for hidden-hole driller and its slotting device - Google Patents
Slotted drill bit for hidden-hole driller and its slotting device Download PDFInfo
- Publication number
- CN2053234U CN2053234U CN 89206268 CN89206268U CN2053234U CN 2053234 U CN2053234 U CN 2053234U CN 89206268 CN89206268 CN 89206268 CN 89206268 U CN89206268 U CN 89206268U CN 2053234 U CN2053234 U CN 2053234U
- Authority
- CN
- China
- Prior art keywords
- notcher
- hole
- axle
- drill bit
- caudal peduncle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000010276 construction Methods 0.000 claims abstract description 5
- 210000003323 beak Anatomy 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 abstract description 12
- 238000005422 blasting Methods 0.000 abstract description 6
- 239000011435 rock Substances 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to the improved groove cutting drill bit of a down-hole drill which can cut out two, three, or four symmetrical grooves on the hole wall during drilling or the groove cutting device of the down-hole drill which can cut out the groove on the walls of drill holes drilled. The utility model can be suitable for the controlled blasting and deep hole blasting of the rock slope in the engineering construction such as opencast mines, railways, etc. The groove cutting device of the down-hole drill mainly comprises a back crank shaft 4 and the groove cutting device 3 (the groove cutting drill bit comprises a drill bit body 2). The utility model can cut groove blast hole with different diameters from 80 millimeters to 250 millimeters.
Description
A kind of improved, can when boring simultaneously at the down-the-hole drill slotting drill bit of leaving two, three, four symmetrical cuttings on the hole wall or on the drill hole wall that has been drilled to, leave the down-the-hole drill notcher of above-mentioned cutting, be the boring and the grooving tool of down-the-hole drill.It mainly is applicable to the controlled blasting of rock slope in the engineering constructions such as railway, highway, water conservancy and hydropower, is particularly useful for opencut and down-hole deep hole blasting.
Present existing open flume type drill bit (China Patent No. 87211268) is only applicable to the shallow borehole with light-duty air rock drill Drilling, can not be applied to down-the-hole drill.
In view of the deficiency that exists in the prior art, the purpose of this utility model is a kind of one-step pore-creating slotting drill bit and secondary pore-forming notcher that can be used for down-the-hole drill of design.
As shown in drawings, down-the-hole drill one-step pore-creating slotting drill bit utilizes custom-designed caudal peduncle axle 4(a) notcher 3(a) and bit body 2 connect as a whole slotting drill bit, caudal peduncle axle 4(a) afterbody is splined shaft, make it to connect with down-the-hole air hammer; At notcher 3(a) the front end face outside, two, three or four carbide chips 5 of welding-on symmetrically, each blade 5 can be dug out a cutting on hole wall in creeping into.This slotting drill bit is provided with special air channel, thus must be used with the down-the-hole air hammer of center exhaust, to guarantee notcher 3(a) unlikely stuck and when boring, can at the bottom of the hole, discharge the rock slag effectively by the rock quarrel.
Twice pore-forming notcher is to aim at the down-the-hole air hammer that adopts the side exhaust to design, and it can only be slotted on the big gun hole wall that has been drilled to.By caudal peduncle axle 4(b), add Upper gasket 7 and nut 8 and notcher 3(b) constituting a notcher, its afterbody is a splined shaft, makes it to connect with down-the-hole air hammer.Notcher 3(b) structure and slotting drill bit notcher 3(a) identical.
The utility model is applicable in the controlled blasting, with the cutting big gun hole of down-the-hole drill Drilling different-diameter (80-250 millimeters).Thereby the rock slope that cutting big gun hole Controlled Blasting is applied in opencut, Rail Highway cutting and the construction of hydropower facilities is constructed.
Fig. 1 is the structure chart of down-the-hole drill one-step pore-creating slotting drill bit; Fig. 2 is the structure chart of down-the-hole drill secondary pore-forming notcher.
Slotting drill bit includes pilot bit 1, bit body 2, notcher 3(a), caudal peduncle axle 4(a) several parts.Pilot bit 1 is by at caudal peduncle axle 4(a) the large matter alloy blade of front end welding-on constitutes; Bit body is the round-meshed metallic object in a center, and the large matter alloy blade of welding-on is arranged on its front end face, and the also available solid cylindric carbide alloy of method edge of colding pressing is when creeping into, by friction effect and caudal peduncle axle 4(a) anterior cone is tightly linked, and rotation together; Notcher 3(a) be the round-meshed metal cylinder in center, the diameter of its circular hole is a bit larger tham caudal peduncle axle 4(a) middle part cylindrical shaft, be slidingly matched between the two, make between notcher and the caudal peduncle axle and can do relative motion; Caudal peduncle axle 4(a) rear portion is the protruding beak of diameter greater than the middle part cylindrical shaft, so that the impact force of down-the-hole air hammer is passed to notcher 3(a); The splined shaft form of afterbody can change with the spline form of down-the-hole air hammer lower contact.Be provided with air channel 6 in the caudal peduncle axle, can be directed at notcher inner hole surface and big gun hole to the air draft of down-the-hole air hammer at the bottom of.When beginning to hole, available wrench blocks notcher so that the direction of control cutting.
The caudal peduncle axle 4(b of twice pore-forming notcher) middle part is a cylinder axis, the rear portion also is the protruding beak of diameter greater than the middle part cylinder axis, so that to notcher 3(b) transmit impact force, notcher 3(b) the notcher 3(a of structure and one-step pore-creating slotting drill bit) similar, with the caudal peduncle axle for being slidingly matched.Notcher 3(b) from caudal peduncle axle 4(b) after preceding being inserted in, add Upper gasket 7, tighten fixing with nut 8 then.
Claims (3)
1, a kind of down-the-hole boring slotting drill bit that is applicable to engineering constructions such as opencut and railway, contain bit body 2, notcher 3 (a), it is characterized in that having caudal peduncle axle 4 (a), and there is protruding beak at caudal peduncle axle 4 (a) rear portion, and the middle part is to be slidingly matched between cylinder axis and the notcher 3 (a), and the front portion is a cone, and be tightly linked by creeping into frictional force between the bit body, afterbody is for being splined shaft and down-the-hole air hammer connection; Notcher 3 (a) front end face outside welding-on has two, three or four carbide chips 5 of symmetrical distribution.
2, slotting drill bit according to claim 1 is characterized in that caudal peduncle axle 4(a) the front end welding-on has carbide chip, constitutes pilot bit 1.
3, a kind of down-the-hole boring notcher that is applicable to engineering constructions such as opencut and railway, include notcher 3(b), pad 7 and nut 8, it is characterized in that caudal peduncle axle 4(b) rear portion is flange, the middle part is for cylinder axis and notcher 3(b) between for being slidingly matched, afterbody is splined shaft and down-the-hole air hammer connection; Notcher 3(b) be inserted in caudal peduncle axle 4(b) after, add Upper gasket 7, tighten fixing with nut 8 then; Notcher 3(b) the front end face outside, welding-on has two, three or four carbide chips 5 of symmetrical distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89206268 CN2053234U (en) | 1989-04-27 | 1989-04-27 | Slotted drill bit for hidden-hole driller and its slotting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89206268 CN2053234U (en) | 1989-04-27 | 1989-04-27 | Slotted drill bit for hidden-hole driller and its slotting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2053234U true CN2053234U (en) | 1990-02-21 |
Family
ID=4863350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89206268 Withdrawn CN2053234U (en) | 1989-04-27 | 1989-04-27 | Slotted drill bit for hidden-hole driller and its slotting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2053234U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075632A (en) * | 2013-01-25 | 2013-05-01 | 地质矿产部无锡钻探工具厂 | Hard alloy bar difficultly loosing weld |
| CN103697773A (en) * | 2013-11-28 | 2014-04-02 | 河南理工大学 | Directionally-controlled blasting crack prefabrication tool |
| CN104439524A (en) * | 2014-11-25 | 2015-03-25 | 绵阳市雅森五金工具有限公司 | Device for drill notching |
| CN111270985A (en) * | 2018-12-05 | 2020-06-12 | 武穴市金锐精密锻造有限公司 | Down-the-hole drill bit with variable diameter |
| CN112814560A (en) * | 2020-12-30 | 2021-05-18 | 重庆国翔新材料有限公司 | Deformation drill bit |
| CN115596349A (en) * | 2022-10-20 | 2023-01-13 | 重庆交通大学（Cn） | Drilling and cutting integrated device for rock drill |
-
1989
- 1989-04-27 CN CN 89206268 patent/CN2053234U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075632A (en) * | 2013-01-25 | 2013-05-01 | 地质矿产部无锡钻探工具厂 | Hard alloy bar difficultly loosing weld |
| CN103697773A (en) * | 2013-11-28 | 2014-04-02 | 河南理工大学 | Directionally-controlled blasting crack prefabrication tool |
| CN103697773B (en) * | 2013-11-28 | 2015-06-17 | 河南理工大学 | Directionally-controlled blasting crack prefabrication tool |
| CN104439524A (en) * | 2014-11-25 | 2015-03-25 | 绵阳市雅森五金工具有限公司 | Device for drill notching |
| CN111270985A (en) * | 2018-12-05 | 2020-06-12 | 武穴市金锐精密锻造有限公司 | Down-the-hole drill bit with variable diameter |
| CN112814560A (en) * | 2020-12-30 | 2021-05-18 | 重庆国翔新材料有限公司 | Deformation drill bit |
| CN115596349A (en) * | 2022-10-20 | 2023-01-13 | 重庆交通大学（Cn） | Drilling and cutting integrated device for rock drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |