CN220929295U - Easy-to-open concentric drilling tool - Google Patents
Easy-to-open concentric drilling tool Download PDFInfo
- Publication number
- CN220929295U CN220929295U CN202322445124.8U CN202322445124U CN220929295U CN 220929295 U CN220929295 U CN 220929295U CN 202322445124 U CN202322445124 U CN 202322445124U CN 220929295 U CN220929295 U CN 220929295U
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- China
- Prior art keywords
- bit
- rotor
- stabilizer
- hole
- drilling
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- 238000005553 drilling Methods 0.000 title claims abstract description 53
- 239000003381 stabilizer Substances 0.000 claims abstract description 48
- 239000011435 rock Substances 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims description 15
- 239000002893 slag Substances 0.000 claims description 13
- 230000036346 tooth eruption Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000013049 sediment Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses an easy-to-open concentric drilling tool, which belongs to the technical field of drilling tools and comprises a rod stabilizer, wherein a concave hole is formed in the end part of the rod stabilizer, a first rotor bit and a second rotor bit are detachably arranged in the concave hole, the first rotor bit and the second rotor bit are oppositely arranged, and opposite side surfaces are mutually parallel; the stabilizer is internally provided with a main air hole, and an air passage which can blow out rock powder in the concave hole is communicated between the main air hole and the concave hole; set up the air flue between through main gas pocket and the shrinkage pool, can outwards blow out the rock powder, avoid the rock powder to enter into in the shrinkage pool and block first rotor bit or second rotor bit to first rotor bit or second rotor bit rotate and expand, the exhaust hole of setting can be to the trailing side with the waste residue discharge that produces of drilling in-process, it is convenient to arrange sediment.
Description
Technical Field
The utility model belongs to the technical field of drilling tools, and particularly relates to an easy-to-open concentric drilling tool.
Background
The down-the-hole drilling tool is mainly used in drilling and blasting work under soft rock stratum and overburden rock stratum, and because regular aperture can not be formed in the rock stratum, the aperture is required to be fixed by adopting a heel tube in the rock stratum, namely, the drill bit and the heel tube are drilled forwards together in the drilling process, and the drill bit is rotated and contracted after drilling is completed and is taken out from the heel tube hole.
Because the main working environment of the pipe-following drilling tool is soft rock stratum and sometimes has an interlayer, the rock stratum is easy to break during drilling, but partial problems are also associated with drilling work, such as: 1. the rotor bit is inconvenient to discharge in the reaming and drilling process; 2. in the rotating process of the rotor bit, rock powder is easy to clamp between the stabilizer and the rotor bit, so that the rotor bit is inconvenient to normally expand, and therefore, the type of bit is required to be optimized.
Disclosure of utility model
The utility model aims to solve the problems, and provides an easy-open concentric drilling tool which is convenient for discharging materials in the drilling process, and is convenient for unfolding a rotor bit during drilling so as to avoid the rotor bit from being clamped.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the easy-to-open concentric drilling tool comprises a stabilizer, wherein a concave hole is formed in the end part of the stabilizer, a first rotor bit and a second rotor bit are detachably arranged in the concave hole, the first rotor bit and the second rotor bit are oppositely arranged, and opposite side surfaces are mutually parallel;
The stabilizer is internally provided with a main air hole, and an air passage which can blow out rock powder in the concave hole is communicated between the main air hole and the concave hole;
The stabilizer is characterized in that an exhaust hole which is convenient for discharging is further formed in the stabilizer, one end of the exhaust hole is communicated with the main air hole, and the other end of the exhaust hole is communicated with the outer side face of the stabilizer.
The improved technical effects are as follows: set up the air flue between through main gas pocket and the shrinkage pool, can outwards blow out the rock powder, avoid the rock powder to enter into in the shrinkage pool and block first rotor bit or second rotor bit to rotation that first rotor bit or second rotor bit can be smooth is expanded, and the exhaust hole of setting can be to the trailing side with the waste residue discharge that bores the in-process and produce, and it is convenient to arrange the sediment.
In order to ensure that rock powder is not stuck among the first rotor bit, the second rotor bit and the stabilizer after being blown out from the concave hole.
As a further improvement of the above technical solution, the first rotor bit and the second rotor bit have a spacing groove with a variable spacing between the end faces of the stabilizer.
The improved technical effects are as follows: through the interval groove that sets up, can make the passageway that forms the rock powder and pass through between first rotor bit, second rotor bit and the stabilizer, can make things convenient for the rock powder in the shrinkage pool to blow out, also avoid blocking each other between first rotor bit, second rotor bit and the stabilizer.
To facilitate the deployment of the first and second rotor bits in synchrony and to protect the first and second rotor bits.
As a further improvement of the above technical solution, the first rotor bit and the second rotor bit are provided with a first guiding portion and a second guiding portion on opposite sides thereof, respectively, and the first guiding portion and the second guiding portion are engaged with each other.
The improved technical effects are as follows: through the first guide part and the second guide part that set up, can let be in sliding contact's state always between first rotor bit and the second rotor bit, first guide part and second guide part can keep leading when first rotor bit and the rotation of second rotor bit, the smooth expansion of being convenient for, and keep first rotor bit and second rotor bit at the same height, make and bore when the cutting balanced, improve the life of first rotor bit, second rotor bit.
For better cutting of the formation, and protection of the drilling tool.
As a further improvement of the above technical solution, the first rotor bit and the second rotor bit have a first drilling surface and a second drilling surface thereon;
The first drilling surface is provided with a plurality of first tooth-loading parts, and the second drilling surface is provided with a plurality of second tooth-loading parts.
As a further improvement of the technical scheme, the cutting teeth are arranged in the first tooth-loading part, and the protecting teeth are arranged in the second tooth-loading part.
The improved technical effects are as follows: through installing different teeth, guarantee normal cutting promptly, also can protect the rotary wing drill bit, improve life.
To facilitate proper connection of the stabilizer bar to the down-the-hole hammer.
As a further improvement of the technical scheme, the other end of the stabilizer is provided with a spline, and the stabilizer is also provided with a limiting groove.
The improved technical effects are as follows: the spline can provide rotary power for the stabilizer, and the limiting groove can prevent the stabilizer and the down-the-hole hammer from being separated from each other.
In order to facilitate the evacuation of the chip slag during drilling.
As a further improvement of the technical scheme, a slag discharging hole communicated with the main air hole is formed in the stabilizer, and the other end of the slag discharging hole faces to the first rotor wing drill bit or the second rotor wing drill bit.
The improved technical effects are as follows: when discharging, waste residues can be discharged outwards through the through holes and the exhaust holes.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of the first and second rotor bits of FIG. 1 after rotational deployment;
FIG. 3 is a schematic view of the structure of the direction A in FIG. 1;
FIG. 4 is a schematic view of the structure in the direction B in FIG. 2;
FIG. 5 is a schematic cross-sectional view taken along the direction C-C in FIG. 3;
FIG. 6 is a schematic cross-sectional view taken in the direction D-D of FIG. 4;
FIG. 7 is a schematic structural view of a center drilling tool;
FIG. 8 is a schematic view of the front face of the center drill;
FIG. 9 is a schematic cross-sectional view taken along the direction E-E in FIG. 8;
FIG. 10 is a schematic view of a first rotary wing bit;
FIG. 11 is a schematic view of a second rotary-wing bit;
Fig. 12 is a schematic view showing a state of the spacer groove at the time of drilling.
The text labels in the figures are expressed as: 10. a stabilizer; 11. a first rotor bit; 111. a first guide part; 12. a second rotor bit; 121. a second guide part; 13. concave holes; 14. a spacing groove; 15. a main air hole; 16. an airway; 17. an exhaust hole; 18. a first drilling surface; 19. a second drilling surface; 20. a first toothed portion; 21. a second tooth-loading portion; 23. a slag discharging hole; 24. a spline; 25. a limiting groove.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present utility model, the following detailed description of the present utility model with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present utility model.
As shown in fig. 1-11 of the specification, as a specific embodiment of the present utility model, the specific structure of the present utility model is: the utility model provides an easy-open concentric drilling tool, includes stabilizer 10, stabilizer 10 tip is provided with shrinkage pool 13, shrinkage pool 13 is specifically set up at stabilizer 10's preceding terminal surface, the quantity is two, be cylindrical hole, can refer to the fig. 7 and show, first rotor bit 11 and second rotor bit 12 are set up to the removable in shrinkage pool 13, the structure of first rotor bit 11, second rotor bit 12 has both included the axis of rotation of cutting part and the lower extreme of upper end, the axis of rotation is installed in shrinkage pool 13, can rotate in shrinkage pool 13, be provided with the recess on the axis of rotation, be provided with the perforation in stabilizer 10, be provided with the bolt in the perforation, the bolt passes the recess on the axis of rotation, prevent that first rotor bit 11 or second rotor bit 12 from dropping from stabilizer 10, can refer to fig. 6, 10, 11 show, above-mentioned structure and scheme all belong to prior art;
Wherein, the first rotor bit 11 and the second rotor bit 12 are oppositely arranged, and the opposite side surfaces are mutually parallel, and the parallel opposite side surfaces can enable the first rotor bit 11 and the second rotor bit 12 to be easier to be unfolded when rotating;
The stabilizer 10 is internally provided with a main air hole 15, the main air hole 15 is communicated with the rear end of the stabilizer 10, an air passage 16 which can blow out rock powder in the concave hole 13 is communicated between the main air hole 15 and the concave hole 13, and as shown in the figure 9, when the rock powder is clamped in the concave hole 13, the first rotary wing bit 11 or the second rotary wing bit 12 is blocked, so that the first rotary wing bit 11 or the second rotary wing bit 12 cannot be effectively unfolded in the drilling working process, and in order to prevent the rock powder from entering the concave hole 13 and blow out the entered rock powder, air can be blown into the concave hole 13 through the main air hole 15 and the air passage 16, and the rock powder in the concave hole 13 can be blown out, so that the rock powder is prevented from entering the concave hole 13, and the first rotary wing bit 11, the second rotary wing bit 12 and the rotary motion cannot be influenced;
The stabilizer 10 is further provided with an exhaust hole 17 facilitating discharging, one end of the exhaust hole 17 is communicated with the main air hole 15, the other end of the exhaust hole is communicated with the outer side surface of the stabilizer 10, and referring to fig. 9, in this embodiment, the exhaust hole 17 is obliquely arranged, one end of the outlet faces the rear end of the stabilizer 10, in addition, a slag discharging hole 23 communicated with the main air hole 15 is arranged in the stabilizer 10, the slag discharging hole 23 is obliquely arranged, the other end of the slag discharging hole 23 faces the first rotor bit 11 or the second rotor bit 12, namely, when drilling is performed, air is blown into the drilled hole through the slag discharging hole 23 and the exhaust hole 17, so that broken rock slag is blown outwards, and the broken rock slag is discharged rapidly, so that rapid slag discharging in the drilling process is realized.
Further optimization is based on the above embodiments, as shown in fig. 5 and 12 of the specification: the first rotor bit 11 and the second rotor bit 12 and the end face of the stabilizer 10 have a spacing groove 14 with a variable spacing, in this embodiment, the spacing groove 14 is specifically a gap between the first rotor bit 11, the second rotor bit 12 and the front end face of the stabilizer 10, the gap is mainly set so that rock powder entering into the concave hole 13 can be blown out, the gap is prevented from being blocked between the first rotor bit 11, the second rotor bit 12 and the stabilizer 10, the gap is changed between 0 and the maximum value thereof, in this embodiment, referring to fig. 5, the spacing groove 14 is set to be present during the non-use of the drilling tool, the spacing of the spacing groove 14 is the maximum, and gas can be introduced into the concave hole 13 during the blowing, so that the rock powder in the concave hole 13 is blown out from the spacing groove 14;
Referring to fig. 12, a schematic view of the state of the interval slot 14 of the whole drilling tool during drilling is shown, at this time, the gap between the first rotary wing bit 11 and the second rotary wing bit 12 and the stabilizer 10 is 0, at this time, the interval slot 14 does not exist, and the interval slot 14 does not exist only in an ideal state during drilling, and as air is blown into the concave hole 13, the air can blow rock powder and blow out through the interval slot 14, so that the condition that the rock powder enters into the concave hole 13 under the condition of drilling is avoided.
Further optimization is based on the above embodiments, as shown in fig. 1, 2, 4, 10, 11 of the specification: the first rotor bit 11 and the second rotor bit 12 are respectively provided with the first guide part 111 and the second guide part 121 on opposite sides, the first guide part 111 is a straight strip-shaped groove, the second guide part 121 is a straight strip-shaped boss, the first guide part 111 and the second guide part 121 are mutually meshed, the first guide part 111 and the second guide part 121 are always in a sliding state, the first rotor bit 11 and the second rotor bit 12 can be guided when being unfolded in a rotating way, the smooth unfolding is convenient, the relative heights of the first rotor bit 11 and the second rotor bit 12 are kept, the first rotor bit 11 and the second rotor bit 12 have the same cutting amount at cutting positions, the cutting drilling balance is kept, and the service lives of the first rotor bit 11 and the second rotor bit 12 are prolonged.
The first rotor bit 11 and the second rotor bit 12 are provided with a first drilling surface 18 and a second drilling surface 19, and the first drilling surface 18 and the second drilling surface 19 are tooth holes or tooth cavities; the first drilling surface 18 is provided with a plurality of first tooth-loading parts 20, cutting teeth are arranged in the first tooth-loading parts 20, the second drilling surface 19 is provided with a plurality of second tooth-loading parts 21, and protection teeth are arranged in the second tooth-loading parts 21, so that the drilling of cutting positions is maintained, the drilling tool is protected, and the service life is prolonged.
Further optimizing on the basis of the embodiment: the other end of the stabilizer 10 is provided with a spline 24, and the stabilizer 10 is also provided with a limiting groove 25, so that the stabilizer 10 can be smoothly installed on the down-the-hole hammer through the spline 24 and the limiting groove 25.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this utility model, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the utility model, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present utility model.
Claims (7)
1. An easy-open concentric drilling tool comprising a stabilizer (10), characterized in that: the end part of the stabilizer (10) is provided with a concave hole (13), a first rotor wing drill bit (11) and a second rotor wing drill bit (12) are detachably arranged in the concave hole (13), the first rotor wing drill bit (11) and the second rotor wing drill bit (12) are oppositely arranged, and opposite side surfaces are mutually parallel;
an air hole (15) is formed in the stabilizer (10), and an air passage (16) which can blow out rock powder in the concave hole (13) is communicated between the air hole (15) and the concave hole (13);
An exhaust hole (17) which is convenient for discharging is further formed in the stabilizer (10), one end of the exhaust hole (17) is communicated with the main air hole (15), and the other end of the exhaust hole is communicated with the outer side face of the stabilizer (10).
2. The easy open concentric drill of claim 1, wherein: a spacing groove (14) with a variable spacing is arranged between the first rotor bit (11) and the second rotor bit (12) and the end face of the stabilizer (10).
3. The easy open concentric drill of claim 1, wherein: the first rotor bit (11) and the second rotor bit (12) are respectively provided with a first guide part (111) and a second guide part (121) on opposite side surfaces, and the first guide part (111) and the second guide part (121) are meshed with each other.
4. The easy open concentric drill of claim 1, wherein: the first rotor bit (11) and the second rotor bit (12) are provided with a first drilling surface (18) and a second drilling surface (19);
The first drilling surface (18) is provided with a plurality of first tooth-loading parts (20), and the second drilling surface (19) is provided with a plurality of second tooth-loading parts (21).
5. The easy open concentric drill of claim 4, wherein: cutting teeth are arranged in the first tooth-loading part (20), and protection teeth are arranged in the second tooth-loading part (21).
6. The easy open concentric drill of claim 1, wherein: the other end of the stabilizer (10) is provided with a spline (24), and the stabilizer (10) is also provided with a limiting groove (25).
7. An easy open concentric drilling tool according to any one of claims 1-6, wherein: a slag discharging hole (23) communicated with the main air hole (15) is formed in the stabilizer (10), and the other end of the slag discharging hole (23) faces to the first rotary wing drill bit (11) or the second rotary wing drill bit (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322445124.8U CN220929295U (en) | 2023-09-08 | 2023-09-08 | Easy-to-open concentric drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322445124.8U CN220929295U (en) | 2023-09-08 | 2023-09-08 | Easy-to-open concentric drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220929295U true CN220929295U (en) | 2024-05-10 |
Family
ID=90963244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322445124.8U Active CN220929295U (en) | 2023-09-08 | 2023-09-08 | Easy-to-open concentric drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220929295U (en) |
-
2023
- 2023-09-08 CN CN202322445124.8U patent/CN220929295U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |