CN204252866U - multi-head large-lead groove spiral drill rod - Google Patents
multi-head large-lead groove spiral drill rod Download PDFInfo
- Publication number
- CN204252866U CN204252866U CN201420731240.4U CN201420731240U CN204252866U CN 204252866 U CN204252866 U CN 204252866U CN 201420731240 U CN201420731240 U CN 201420731240U CN 204252866 U CN204252866 U CN 204252866U
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- China
- Prior art keywords
- groove
- drilling rod
- drill rod
- helical pitch
- bull
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- 238000005553 drilling Methods 0.000 claims abstract description 38
- 244000309464 bull Species 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 abstract 1
- 239000002893 slag Substances 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a bull big helical pitch recess auger stem, be equipped with 2 ~ 4 spiral grooves on the drilling rod, the cross-sectional shape of helicla flute is arc-shaped groove or U type groove or W type groove, the groove width of helicla flute is 18 ~ 50mm, and the groove depth is 1.5 ~ 6mm, and groove root fillet R is greater than or equal to 2mm, and the helical pitch is 180 ~ 1200 mm; the multi-head large-lead groove spiral drill rod is simple in structure and wide in application range, not only improves the slag discharging efficiency of the drill rod, but also enhances the structural strength of the drill rod, improves the reliability of the drill rod and prolongs the service life of the drill rod.
Description
Technical field
The utility model belongs to drilling rod field, is specifically related to a kind of bull large pitch groove coil drilling rod.
Background technology
Wide blade screw drilling rod is applicable to drilling construction that is soft, broken formation, and when pressing wind deslagging in use, and when boring mud is more, the deslagging effect of common wide blade screw drilling rod decreases.During boring under same rotational speed, the higher drilling rod spiral fluted helical pitch matched of wind speed should be larger.In order to improve deslagging efficiency further, the demand improved the auger stem of routine is urgent increasingly.
Summary of the invention
In view of this, the purpose of this utility model is to provide that a kind of structure is simple, good reliability, can significantly improves the bull large pitch groove coil drilling rod of deslagging efficiency.
For achieving the above object, the utility model provides following technical scheme: a kind of bull large pitch groove coil drilling rod, described drilling rod is provided with 2 ~ 4 helicla flutes, described spiral fluted cross sectional shape is arc-shaped slot or U-type groove or W type groove, described spiral fluted groove width is 18 ~ 50mm, groove depth is 1.5 ~ 6mm, groove root fillet R >=2mm, and helical pitch is 180 ~ 1200mm.
Further, described drilling rod external diameter size is 50mm or 63mm or 73mm or 89mm.
Further, described drilling rod is provided with central through hole in the axial direction.
The beneficial effects of the utility model are: the structure of this bull large pitch groove coil drilling rod is simple, applied widely, solve the defect that in prior art, the auger stem scope of application is little, on auger stem, each parameter is through overmatching, not only increase the deslagging efficiency of drilling rod, also significantly enhance the structural strength of drilling rod, improve the reliability of drilling rod, extend the application life of drilling rod.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional view of arc-shaped slot;
Fig. 3 is the sectional view of U-type groove;
Fig. 4 is the sectional view of W type groove.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As shown in the figure, bull large pitch groove coil drilling rod described in the present embodiment, drilling rod 1 is provided with 2 ~ 4 helicla flutes 11, the cross sectional shape of described helicla flute 11 is arc-shaped slot or U-type groove or W type groove, wherein, described spiral fluted groove width is 18 ~ 50mm, and groove depth is 1.5 ~ 6mm, and helical pitch is 180 ~ 1200mm.Each parameter in the present embodiment is the difference according to wind speed and bed drain purge, and has specially carried out rational coupling to spiral fluted size, head number and helical pitch, achieves the quick deslagging of double end, three and four first-class serial large pitch groove coil drilling rods.Groove root fillet R >=2mm in the present embodiment, adopts larger root fillet, effectively can improve the intensity of drilling rod, improve its reliability.
As the further improvement of such scheme, the drilling rod 1 external diameter size described in the present embodiment is divided into 50mm, 63mm, 73mm and 89mm tetra-kinds of specifications.
Concrete, when the drilling rod 1 external diameter size in the present embodiment is 50mm, drilling rod 1 is provided with 2 helicla flutes 11, and the groove width of helicla flute 11 is 18 ~ 22mm, and groove depth is 1.5 ~ 2mm, and helical pitch is 180 ~ 350mm.
When drilling rod 1 external diameter size is 63mm, drilling rod 1 is provided with 2 helicla flutes 11, and the groove width of helicla flute 11 is 20 ~ 30mm, and groove depth is 2 ~ 3.5mm, and helical pitch is 350 ~ 600mm.
When drilling rod 1 external diameter size is 73mm, drilling rod 1 is provided with 3 helicla flutes 11, and the groove width of helicla flute 11 is 30 ~ 40mm, and groove depth is 3.5 ~ 5mm, and helical pitch is 600 ~ 900mm.
When drilling rod 1 external diameter size is 89mm, drilling rod 1 is provided with 4 helicla flutes 11, and the groove width of helicla flute 11 is 40 ~ 50mm, and groove depth is 5 ~ 6mm, and helical pitch is 800 ~ 1200mm.
As the further improvement of such scheme, described drilling rod is provided with central through hole 12 in the axial direction.
What finally illustrate is, above preferred embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model by above preferred embodiment, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from the utility model claims limited range.
Claims (3)
1. a bull large pitch groove coil drilling rod, it is characterized in that: described drilling rod is provided with 2 ~ 4 helicla flutes, described spiral fluted cross sectional shape is arc-shaped slot or U-type groove or W type groove, described spiral fluted groove width is 18 ~ 50mm, groove depth is 1.5 ~ 6mm, groove root fillet R >=2mm, helical pitch is 180 ~ 1200mm.
2. bull large pitch groove coil drilling rod according to claim 1, is characterized in that: described drilling rod external diameter size is 50mm or 63mm or 73mm or 89mm.
3. bull large pitch groove coil drilling rod according to claim 1, is characterized in that: described drilling rod is provided with central through hole in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420731240.4U CN204252866U (en) | 2014-11-27 | 2014-11-27 | multi-head large-lead groove spiral drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420731240.4U CN204252866U (en) | 2014-11-27 | 2014-11-27 | multi-head large-lead groove spiral drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204252866U true CN204252866U (en) | 2015-04-08 |
Family
ID=52957186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420731240.4U Active CN204252866U (en) | 2014-11-27 | 2014-11-27 | multi-head large-lead groove spiral drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204252866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374641A (en) * | 2018-03-29 | 2018-08-07 | 钱煜坤 | For the anti-sticking short circuit drilling rod of guiding of medium-length hole drilling machine and for the drilling rod group of medium-length hole drilling machine |
-
2014
- 2014-11-27 CN CN201420731240.4U patent/CN204252866U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374641A (en) * | 2018-03-29 | 2018-08-07 | 钱煜坤 | For the anti-sticking short circuit drilling rod of guiding of medium-length hole drilling machine and for the drilling rod group of medium-length hole drilling machine |
| CN108374641B (en) * | 2018-03-29 | 2020-07-07 | 钱煜坤 | Guiding anti-blocking short-circuit drill rod for medium-length hole drilling machine and drill rod group for medium-length hole drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |