CN110886581A - Drill rod structure for down-the-hole drill - Google Patents
Drill rod structure for down-the-hole drill Download PDFInfo
- Publication number
- CN110886581A CN110886581A CN201911288510.2A CN201911288510A CN110886581A CN 110886581 A CN110886581 A CN 110886581A CN 201911288510 A CN201911288510 A CN 201911288510A CN 110886581 A CN110886581 A CN 110886581A
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- Prior art keywords
- drill rod
- rod body
- hole
- drill
- fixed
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- 239000000428 dust Substances 0.000 claims abstract description 40
- 238000007599 discharging Methods 0.000 claims abstract description 23
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims description 26
- 230000000903 blocking effect Effects 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 229910001018 Cast iron Inorganic materials 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000011435 rock Substances 0.000 abstract description 18
- 239000002245 particle Substances 0.000 abstract description 16
- 239000004575 stone Substances 0.000 abstract description 15
- 238000009434 installation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 6
- 230000003111 delayed effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 meanwhile Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a drill rod structure for a down-the-hole drill, which comprises an outer drill rod body, a telescopic cavity, an inner drill rod body, an outer thread strip and a dust discharging structure, wherein the telescopic cavity is arranged inside the outer drill rod body, a through hole is formed in the bottom end of the outer drill rod body below the telescopic cavity, the inner drill rod body is arranged inside the through hole, the bottom end of the inner drill rod body penetrates through the through hole and is fixedly provided with a connecting block, a drill bit is fixed at the bottom end of the connecting block, the dust discharging structure is arranged on the inner wall of the bottom of the outer drill rod body, an installation block is fixed at the top end of the outer drill rod body, a sealing ring is fixed at the edge position of the top end of the installation block, a reinforcing cavity is arranged inside the inner drill rod body. The invention not only realizes the function of quickly adjusting the length of the drill rod when in use, reduces the residue of rock dust and fine broken stone particles in the drill rod, but also enhances the torsion resistance and the pressure resistance of the drill rod when in use.
Description
Technical Field
The invention relates to the technical field of down-the-hole drills, in particular to a drill rod structure for a down-the-hole drill.
Background
The down-the-hole drill is a hole forming device applied to mine, municipal engineering and other projects, the down-the-hole drill can drill holes in medium or hard rocks, the rock drilling and the hole forming are realized through impact, rotation, propulsion, slag discharge and other parts, and a drill rod is an indispensable part in the down-the-hole drill and plays a vital role.
The drill rod on the market is various in structure, can basically meet the use requirements of people, but still has certain defects, and the specific problems are as follows.
(1) When the existing drill rod structure is used, different drilling requirements are usually met by replacing drill rods with different lengths, the step of replacing the drill rods is complicated, time and labor are wasted, and the convenience degree is low;
(2) rock dust and fine broken stone particles generated in the process of drilling by the conventional drill rod structure easily enter the interior of the drill rod and are easily accumulated in the interior of the drill rod to cause abrasion of the drill rod, so that an improved space exists;
(3) the existing drill rod structure usually needs to bear larger torsional force and pressure when in use, so that the fatigue damage of the drill rod is easily caused.
Disclosure of Invention
The invention aims to provide a drill rod structure for a down-the-hole drill, which aims to solve the problems that the length of a drill rod is difficult to quickly adjust when the drill rod structure is used, rock dust and fine broken stone particles easily enter the drill rod and the drill rod is easily damaged by fatigue in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: drilling rod structure for down-the-hole drill, including the outer drilling rod body, flexible chamber, interior drilling rod body, external screw thread strip and row's grey structure, the inside of the outer drilling rod body is provided with flexible chamber, and the outer drilling rod body bottom of flexible chamber below is provided with the through-hole, the inside of through-hole is provided with the interior drilling rod body, and the bottom of the interior drilling rod body runs through the through-hole and is fixed with the connecting block to the bottom mounting of connecting block has the drill bit, all be provided with row's grey structure on the inner wall of outer drilling rod body bottom, and the top of the outer drilling rod body is fixed with the installation piece, and the border position department on installation piece top is fixed with the sealing washer, the inside of the interior drilling rod body is provided with the reinforcement chamber, and consolidates the inside in chamber and is fixed with alloy cast iron core to be fixed with wear-resisting steel layer on alloy cast.
Preferably, the bottom of the outer drill pipe body all is provided with spacing recess, and the connecting block top of spacing recess position department is fixed with spacing lug, and the top of spacing lug extends to the inside of spacing recess, spacing lug and the mutual block of spacing recess.
Preferably, an external thread strip is fixed on the outer wall of the top of the inner drill rod body, an internal thread groove is fixed on the inner wall of the telescopic cavity below the external thread strip, and the internal thread groove is meshed with the external thread strip.
Preferably, a fixed block is fixed at the top of the telescopic cavity above the inner drill rod body, a rectangular groove is formed in the bottom end of the fixed block, a rectangular block is arranged in the rectangular groove, and the bottom end of the rectangular block is fixedly connected with the top end of the inner drill rod body.
Preferably, the ash discharge structure is internally provided with an ash resistance ring, an upper ash discharge port and a lower ash discharge port in sequence, the inner wall of the bottom of the outer drill rod body is fixedly provided with the ash resistance ring, and the inner side wall of the ash resistance ring is in close contact with the outer side wall of the inner drill rod body.
Preferably, the inner wall of the outer drill rod body below the ash blocking ring is provided with an upper ash discharging hole, the inner wall of the outer drill rod body below the upper ash discharging hole is provided with a lower ash discharging hole, the lower ash discharging hole is communicated with the upper ash discharging hole, and the lower ash discharging hole is matched with the upper ash discharging hole.
Compared with the prior art, the invention has the beneficial effects that: the drill rod structure for the down-the-hole drill not only realizes the function of quickly adjusting the length of the drill rod when the drill rod is used, reduces the residue of rock dust and fine broken stone particles in the drill rod, but also enhances the anti-torsion force and the anti-pressure performance when the drill rod is used;
(1) through the arrangement of the fixing block, the rectangular groove, the rectangular block, the external thread strip, the internal thread groove, the limiting groove and the limiting lug, a worker pulls the drill bit downwards to enable the drill bit to drive the internal drill rod body to slide downwards in the telescopic cavity through the connecting block, in the process, the rectangular block at the top end of the internal drill rod body is separated from the rectangular groove at the bottom end of the fixing block, meanwhile, the limiting lug at the top end of the connecting block is separated from the limiting groove at the bottom end of the external drill rod body, when the internal drill rod body drives the external thread strip to move to the position of the internal thread groove in the inner wall of the telescopic cavity, the drill bit is rotated to enable the internal drill rod body to be driven to rotate through the connecting block, so that the external thread strip is screwed into the internal thread groove, the position of the internal drill rod body is fixed, and the internal drill rod body extends to the outside;
(2) by arranging the dust blocking ring, the upper dust exhaust port and the lower dust exhaust port, when rock dust and fine broken stone particles generated by drilling enter the telescopic cavity through the through hole, the dust blocking ring on the inner wall of the telescopic cavity blocks the rock dust and the fine broken stone particles, and the rock dust and the fine broken stone particles are exhausted to the outside of the outer drill rod body through the upper dust exhaust port and the lower dust exhaust port, so that the residue of the rock dust and the fine broken stone particles in the drill rod is reduced;
(3) through being provided with and consolidating chamber, alloy cast iron core and wear-resisting steel layer, consolidate the alloy cast iron core of intracavity portion and have the performance of high rigidity, the setting of alloy cast iron core has improved the bulk hardness of the interior drilling rod body, and the auxiliary action of cooperation wear-resisting steel layer has simultaneously strengthened antitorque commentaries on classics power and compressive strength performance when the drilling rod uses to the fatigue damage of drilling rod has been delayed.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic structural diagram of the front view of the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;
FIG. 4 is an enlarged schematic view of the ash discharge structure of the present invention.
In the figure: 1. drilling a rod body outside; 2. connecting blocks; 3. a drill bit; 4. a through hole; 5. a telescoping chamber; 6. an inner drill rod body; 7. a fixed block; 8. mounting blocks; 9. a seal ring; 10. a rectangular groove; 11. a rectangular block; 12. an externally threaded strip; 13. an internal thread groove; 14. an ash discharge structure; 1401. a dust blocking ring; 1402. an upper ash discharge port; 1403. an ash discharge port; 15. a limiting groove; 16. a limiting bump; 17. reinforcing the cavity; 18. casting an iron core by using alloy; 19. a wear-resistant steel layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention is shown: the drill rod structure for the down-the-hole drill comprises an outer drill rod body 1, a telescopic cavity 5, an inner drill rod body 6, an outer thread strip 12 and a dust discharging structure 14, wherein the telescopic cavity 5 is arranged inside the outer drill rod body 1, and a through hole 4 is formed in the bottom end of the outer drill rod body 1 below the telescopic cavity 5;
the bottom end of the outer drill rod body 1 is provided with a limiting groove 15, a limiting lug 16 is fixed at the top end of the connecting block 2 at the position of the limiting groove 15, the top end of the limiting lug 16 extends into the limiting groove 15, and the limiting lug 16 and the limiting groove 15 are clamped with each other and are used for connecting the bottom ends of the outer drill rod body 1 and the inner drill rod body 6;
an inner drill rod body 6 is arranged inside the through hole 4, the bottom end of the inner drill rod body 6 penetrates through the through hole 4 and is fixed with a connecting block 2, and a drill bit 3 is fixed at the bottom end of the connecting block 2;
an external thread strip 12 is fixed on the outer wall of the top of the inner drill rod body 6, an internal thread groove 13 is fixed on the inner wall of the telescopic cavity 5 below the external thread strip 12, and the internal thread groove 13 is meshed with the external thread strip 12 for fixing the position of the inner drill rod body 6 during the length adjustment of the drill rod;
a fixed block 7 is fixed at the top of the telescopic cavity 5 above the inner drill rod body 6, a rectangular groove 10 is formed in the bottom end of the fixed block 7, a rectangular block 11 is arranged inside the rectangular groove 10, and the bottom end of the rectangular block 11 is fixedly connected with the top end of the inner drill rod body 6 and used for connecting the outer drill rod body 1 with the top end of the inner drill rod body 6;
the inner wall of the bottom of the outer drill rod body 1 is provided with an ash discharging structure 14, the top end of the outer drill rod body 1 is fixed with an installation block 8, and the edge position of the top end of the installation block 8 is fixed with a sealing ring 9;
the ash discharge structure 14 is internally provided with an ash blocking ring 1401, an upper ash discharge hole 1402 and a lower ash discharge hole 1403 in sequence, the ash blocking ring 1401 is fixed on the inner wall of the bottom of the outer drill rod body 1, the inner side wall of the ash blocking ring 1401 is tightly contacted with the outer side wall of the inner drill rod body 6, the upper ash discharge hole 1402 is arranged on the inner wall of the outer drill rod body 1 below the ash blocking ring 1401, the lower ash discharge hole 1403 is arranged on the inner wall of the outer drill rod body 1 below the upper ash discharge hole 1402, the lower ash discharge hole 1403 is communicated with the upper ash discharge hole 1402, and the lower ash discharge hole 1403 is matched with the upper ash discharge hole 1402;
in the drilling process, when rock dust and fine broken stone particles generated by drilling enter the telescopic cavity 5 through the through hole 4, the dust blocking ring 1401 on the inner wall of the telescopic cavity 5 blocks the rock dust and the fine broken stone particles, and the rock dust and the fine broken stone particles are discharged to the outside of the outer drill rod body 1 through the upper dust discharging hole 1402 and the lower dust discharging hole 1403, so that the residue of the rock dust and the fine broken stone particles in the drill rod is reduced;
the inside of interior drilling rod body 6 is provided with consolidates chamber 17, and consolidates the inside of chamber 17 and be fixed with alloy cast iron core 18 to be fixed with wear-resisting steel layer 19 on the outer wall of alloy cast iron core 18, wear-resisting steel layer 19's outer wall and the inner wall fixed connection who consolidates chamber 17.
The working principle is as follows: when the device is used, a worker firstly connects the external down-the-hole drill with the external drill rod body 1, secondly, when the length of the drill rod needs to be adjusted, the worker pulls the drill bit 3 downwards to drive the internal drill rod body 6 to slide downwards in the telescopic cavity 5 through the connecting block 2, in the process, the rectangular block 11 at the top end of the internal drill rod body 6 is separated from the rectangular groove 10 at the bottom end of the fixing block 7, meanwhile, the limiting lug 16 at the top end of the connecting block 2 is separated from the limiting groove 15 at the bottom end of the external drill rod body 1, when the internal drill rod body 6 drives the external thread strip 12 to move to the position of the internal thread groove 13 on the inner wall of the telescopic cavity 5, the drill bit 3 is rotated to drive the internal drill rod body 6 to rotate through the connecting block 2, so that the external thread strip 12 is screwed into the internal thread groove 13 to fix the position of the internal drill rod body 6, at the moment, the internal drill rod body 6 extends to the outside of the external drill, then, in the process of drilling, when rock dust and fine broken stone particles generated by drilling enter the interior of the telescopic cavity 5 through the through hole 4, the dust blocking ring 1401 on the inner wall of the telescopic cavity 5 blocks rock dust and fine gravel particles, meanwhile, rock dust and fine broken stone particles are discharged to the outside of the outer drill rod body 1 through the upper dust discharge port 1402 and the lower dust discharge port 1403, so that the residue of the rock dust and the fine broken stone particles in the drill rod is reduced, and finally, in the using process of the drill rod, the alloy cast iron core 18 in the reinforcing cavity 17 has high hardness, the arrangement of the alloy cast iron core 18 improves the integral hardness of the inner drill rod body 6, meanwhile, the auxiliary action of the wear-resistant steel layer 19 is matched, so that the torsion resistance and the pressure resistance of the drill rod during use are enhanced, the fatigue damage of the drill rod is delayed, and the work of the drill rod structure for the down-the-hole drill is completed.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. Drilling rod structure for down-the-hole drill includes outer drilling rod body (1), flexible chamber (5), interior drilling rod body (6), external screw thread strip (12) and row's ash structure (14), its characterized in that: a telescopic cavity (5) is arranged inside the outer drill rod body (1), a through hole (4) is formed in the bottom end of the outer drill rod body (1) below the telescopic cavity (5), an inner drill rod body (6) is arranged inside the through hole (4), the bottom end of the inner drill rod body (6) penetrates through the through hole (4) and is fixed with a connecting block (2), a drill bit (3) is fixed at the bottom end of the connecting block (2), ash discharge structures (14) are arranged on the inner wall of the bottom of the outer drill rod body (1), a mounting block (8) is fixed at the top end of the outer drill rod body (1), a sealing ring (9) is fixed at the edge position of the top end of the mounting block (8), a reinforcing cavity (17) is arranged inside the inner drill rod body (6), an alloy cast iron core (18) is fixed inside the reinforcing cavity (17), and a wear-resistant steel layer (19) is fixed on the outer wall of the alloy cast iron, the outer wall of the wear-resistant steel layer (19) is fixedly connected with the inner wall of the reinforcing cavity (17).
2. The drill rod structure for a down-the-hole drill according to claim 1, wherein: the bottom of the outer drill rod body (1) is provided with a limiting groove (15), a limiting lug (16) is fixed to the top end of the connecting block (2) at the position of the limiting groove (15), the top end of the limiting lug (16) extends to the inside of the limiting groove (15), and the limiting lug (16) and the limiting groove (15) are clamped with each other.
3. The drill rod structure for a down-the-hole drill according to claim 1, wherein: an external thread strip (12) is fixed on the outer wall of the top of the inner drill rod body (6), an internal thread groove (13) is fixed on the inner wall of the telescopic cavity (5) below the external thread strip (12), and the internal thread groove (13) is meshed with the external thread strip (12).
4. The drill rod structure for a down-the-hole drill according to claim 1, wherein: the telescopic cavity (5) above the inner drill rod body (6) is fixedly provided with a fixed block (7) at the top, the bottom end of the fixed block (7) is provided with a rectangular groove (10), a rectangular block (11) is arranged inside the rectangular groove (10), and the bottom end of the rectangular block (11) is fixedly connected with the top end of the inner drill rod body (6).
5. The drill rod structure for a down-the-hole drill according to claim 1, wherein: the inner part of the ash discharging structure (14) is sequentially provided with an ash blocking ring (1401), an upper ash discharging port (1402) and a lower ash discharging port (1403), the inner wall of the bottom of the outer drill rod body (1) is fixedly provided with the ash blocking ring (1401), and the inner side wall of the ash blocking ring (1401) is in close contact with the outer side wall of the inner drill rod body (6).
6. The drill rod structure for a down-the-hole drill according to claim 5, wherein: the inner wall of the outer drill rod body (1) below the dust blocking ring (1401) is provided with an upper dust discharging hole (1402), the inner wall of the outer drill rod body (1) below the upper dust discharging hole (1402) is provided with a lower dust discharging hole (1403), the lower dust discharging hole (1403) is communicated with the upper dust discharging hole (1402), and the lower dust discharging hole (1403) is matched with the upper dust discharging hole (1402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288510.2A CN110886581A (en) | 2019-12-11 | 2019-12-11 | Drill rod structure for down-the-hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288510.2A CN110886581A (en) | 2019-12-11 | 2019-12-11 | Drill rod structure for down-the-hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110886581A true CN110886581A (en) | 2020-03-17 |
Family
ID=69751953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911288510.2A Withdrawn CN110886581A (en) | 2019-12-11 | 2019-12-11 | Drill rod structure for down-the-hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110886581A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065285A (en) * | 2020-08-13 | 2020-12-11 | 祁东县锋速钻探工具有限公司 | Anti-bending diamond compact bit with concave-convex lip surface |
-
2019
- 2019-12-11 CN CN201911288510.2A patent/CN110886581A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065285A (en) * | 2020-08-13 | 2020-12-11 | 祁东县锋速钻探工具有限公司 | Anti-bending diamond compact bit with concave-convex lip surface |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20200317 |