CN204941353U - Exempt from rotary drilling-head of slagging tap - Google Patents
Exempt from rotary drilling-head of slagging tap Download PDFInfo
- Publication number
- CN204941353U CN204941353U CN201520263383.1U CN201520263383U CN204941353U CN 204941353 U CN204941353 U CN 204941353U CN 201520263383 U CN201520263383 U CN 201520263383U CN 204941353 U CN204941353 U CN 204941353U
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- China
- Prior art keywords
- helical blade
- boring
- drill body
- rotary drilling
- head
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- 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.)
- Expired - Fee Related
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses one and exempt from rotary drilling-head of slagging tap, comprise drill body and helical blade, wherein drill body is circular cone structure, and its upper diameter is greater than lower diameter; The external diameter of helical blade is all equal, thus drill bit bottom can hold more boring mud and top can hold less boring mud, is rotated down in traveling process at drill bit, and the drill body of taper and helical blade combination form gradually narrow space, force boring mud outwards to extrude.Can not to slag tap boring, to guarantee boring work continuity, increase work efficiency, reduce workload.And building site environment that need not be complicated again carries out boring mud transport, also reduce the amount of labour and reduce engineering cost.Boring mud can make drill hole inner wall become more closely knit when being forced outwardly extruding, reaches reinforcing drilling action, the collapse hole problem that may occur when anti-anti-avulsion is bored, and also can improve boring and concrete bond strength.The utility model structure is simple, and result of use is good, is applicable to promotion and implementation.
Description
Technical field
The utility model relates to rotary drilling rig accessory technical field, is specifically related to one and exempts from rotary drilling-head of slagging tap.
Background technology
At present, the rotary drilling rig used in various engineering, its course of work be need " under bore → creep into → carry brills → fall native → Xia Zuan ‥ ‥ ‥ again " several step circulates successively.Make a call to during bit operation at every turn and must propose drill bit and outwell boring mud once boring and creep into, cause Auger drilling work not carry out continuously, efficiency is very low, adds workload and number of workers.Secondly, need outwards transport when boring mud accumulation is too many, otherwise affect further work, too increase workload.The easy contaminated site environment of muddy water is carried, for construction is made troubles further when outwelling boring mud.Again, after boring mud is drawn out, drill hole inner wall intensity reduce, not only easily there is collapse hole problem, and when concreting and soil horizon bond strength also reduce.
Utility model content
The purpose of this utility model there is inadequate reasonability for the drill bit of existing rotary drilling rig, causes rotary drilling rig constantly to shut down and deslagging problem, provide one to exempt from rotary drilling-head of slagging tap by improvement.
Adopt following technical scheme for achieving the above object: one exempts from rotary drilling-head of slagging tap, comprise drill body, drill body link and helical blade, described drill body is circular cone structure, and its upper diameter is greater than lower diameter; Between the outward flange of helical blade and inward flange, width d is broadening gradually from the top down, but helical blade lower outer diameter is not more than top external diameter.
The external diameter of described helical blade is all equal, and namely the outer side edges of helical blade is on the same face of cylinder.The pitch of described helical blade is equal.The helical blade be positioned at outside drill body is single-screw blade, or is double helix blade, or is many helical blades.
Beneficial effect: the matching relationship between helical blade of the present utility model and drill body, boring of can not slagging tap, guarantees boring work continuity, increases work efficiency, and reduces extra work amount.And building site environment that need not be complicated again carries out boring mud transport, reduce labour intensity, save labour and reduce engineering cost.Because drill body is circular cone shape, and helical blade external diameter is identical, thus enable that drill bit bottom holds more boring mud and top can hold less boring mud, boring mud is forced outwards to extrude downwards when drill bit runs, drill hole inner wall can be made to become more closely knit, reach reinforcing drilling action, thus when preventing from carrying brill, collapse hole problem may occur, drill hole inner wall also can improve boring and concrete bond strength after strengthening, and improves integral construction quality.The utility model structure is simple, and result of use is good, is applicable to promotion and implementation.
Accompanying drawing explanation
Fig. 1 is that the utility model exempts from rotary drilling-head structural representation of slagging tap.
Number in the figure 1 is drill body link, and 2 is drill body, and 3 is helical blade.
Detailed description of the invention
One exempts from rotary drilling-head of slagging tap, and see Fig. 1, comprises drill body 2, drill body link 1 and helical blade 3.
Wherein, drill body 2 is circular cone structure, and its upper diameter is greater than lower diameter; Between the outward flange of helical blade 3 and inward flange, width d is broadening gradually from the top down.But helical blade 3 lower outer diameter is not more than top external diameter.As in Fig. 1, the external diameter of helical blade 3 is all equal, namely the outer side edges of helical blade 3 is on the same face of cylinder.And the pitch of helical blade 3 is equal.In addition, the helical blade 3 be positioned at outside drill body can be single-screw blade, also can be double helix blade, or be many helical blades.
The outward flange of helical blade 3 and the width of asking of inward flange, top width is less than width on the lower successively, i.e. d1<d2<d3<d4.Thus drill bit bottom can hold more boring mud and top can hold less boring mud, be rotated down in traveling process at drill bit, the drill body of taper and helical blade combination form gradually narrow sky and ask, force boring mud must outwards extruding.Automatically can reinforce boring, when anti-anti-avulsion is bored, sky problem may be stepped on, improve boring and concrete bond strength.Need not slag tap in the whole rotary drilling course of work, guarantee boring work continuity, increase work efficiency, reduce workload.Also building site environment that need not be complicated again carries out boring mud transport, also reduces the amount of labour and reduces engineering cost.
Utilize the body that rotarily drives of rotary drilling rig to rotate, the soil body is produced to epipolar restriction, the squeezed compression borehole circumference soil body, produce hole, thus reach boring object.As Fig. 1 structure is found out, drill bit bottom can hold more boring mud and top can hold less boring mud, along with drill bit moves downward, boring mud is forced outwards to extrude, automatically can reinforce boring, when anti-anti-avulsion is bored, collapse hole problem may occur, improve boring and concrete bond strength.
Claims (4)
1. exempt from a rotary drilling-head of slagging tap, comprise drill body, drill body link and helical blade, is characterized in that: described drill body is circular cone structure, and its upper diameter is greater than lower diameter; Between the outward flange of helical blade and inward flange, width d is broadening gradually from the top down, but helical blade lower outer diameter is not more than top external diameter.
2. according to claim 1ly exempt from rotary drilling-head of slagging tap, it is characterized in that: the external diameter of described helical blade is all equal, namely the outer side edges of helical blade is on the same face of cylinder.
3. according to claim 1ly exempt from rotary drilling-head of slagging tap, it is characterized in that: the pitch of described helical blade is equal.
4. according to claim 1ly exempt from rotary drilling-head of slagging tap, it is characterized in that: the helical blade be positioned at outside drill body is single-screw blade, or be double helix blade, or be many helical blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520263383.1U CN204941353U (en) | 2015-04-28 | 2015-04-28 | Exempt from rotary drilling-head of slagging tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520263383.1U CN204941353U (en) | 2015-04-28 | 2015-04-28 | Exempt from rotary drilling-head of slagging tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204941353U true CN204941353U (en) | 2016-01-06 |
Family
ID=55008794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520263383.1U Expired - Fee Related CN204941353U (en) | 2015-04-28 | 2015-04-28 | Exempt from rotary drilling-head of slagging tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204941353U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050150A (en) * | 2016-05-25 | 2016-10-26 | 煤炭科学技术研究院有限公司 | Reverse-spiral conical PDC drill bit capable of preventing hole collapse and used for soft rock drilling |
| CN115749590A (en) * | 2022-12-07 | 2023-03-07 | 中国电建集团华东勘测设计研究院有限公司 | Coral sand hole-spinning device and method with foundation solidification function |
-
2015
- 2015-04-28 CN CN201520263383.1U patent/CN204941353U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050150A (en) * | 2016-05-25 | 2016-10-26 | 煤炭科学技术研究院有限公司 | Reverse-spiral conical PDC drill bit capable of preventing hole collapse and used for soft rock drilling |
| CN115749590A (en) * | 2022-12-07 | 2023-03-07 | 中国电建集团华东勘测设计研究院有限公司 | Coral sand hole-spinning device and method with foundation solidification function |
| CN115749590B (en) * | 2022-12-07 | 2023-08-29 | 中国电建集团华东勘测设计研究院有限公司 | Coral sand rotary hole device and method with foundation solidification function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20190428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |