CN111270985A - Down-the-hole drill bit with variable diameter - Google Patents
Down-the-hole drill bit with variable diameter Download PDFInfo
- Publication number
- CN111270985A CN111270985A CN201811477271.0A CN201811477271A CN111270985A CN 111270985 A CN111270985 A CN 111270985A CN 201811477271 A CN201811477271 A CN 201811477271A CN 111270985 A CN111270985 A CN 111270985A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- ring
- side tooth
- tooth mounting
- small cylinder
- 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.)
- Pending
Links
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E21B4/00—Drives for drilling, used in the borehole
-
- 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
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
-
- 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
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
- E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a down-the-hole drill bit with a variable diameter, which comprises a drill bit and a drill tail, wherein the drill bit is of a step hole-shaped structure consisting of a small cylinder and a large cylinder, a side tooth mounting ring and a fixing ring are sequentially sleeved on the small cylinder, side teeth are arranged on the side tooth mounting ring, the fixing ring is used for screwing down the small cylinder to tightly press and fix the side tooth mounting ring, when the diameter is required to be changed, the fixing ring is screwed down, and the side tooth mounting ring with the larger or smaller width of the ring body is replaced, so that the specific size from the side teeth to the center of the drill bit is correspondingly increased or reduced, the diameter changing effect is achieved, compared with the existing down-the-hole drill bit, the whole down-the-.
Description
Technical Field
The invention relates to a drill bit, in particular to a down-the-hole drill bit with a variable diameter.
Background
The down-the-hole drill bit is a drill bit used for drilling holes, generally, the down-the-hole drill bit is provided with side teeth and middle teeth, the middle teeth are used for diving, the side teeth are used for guaranteeing the aperture, the existing down-the-hole drill bit does not have the reducing function, holes with different apertures are required to be drilled, and different drill bits can be replaced, so that a drilling project is often required to be provided with a plurality of drill bits with different specifications, and the cost is high.
Disclosure of Invention
The invention aims to provide a down-the-hole drill bit with variable diameter, which solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a variable diameter down-the-hole drill bit comprising:
the drill bit is of a step hole-shaped structure formed by an upper small cylinder and a lower large cylinder, a plurality of middle teeth are arranged at the top of the small cylinder, and external threads are arranged at the upper part of the side wall of the small cylinder;
the drill tail is of a columnar structure and is connected to the center of the bottom surface of the large cylinder;
the side tooth mounting ring is of an annular structure, an anti-skid washer is fixed on the inner ring of the side tooth mounting ring, the diameter of the inner ring is the same as that of the small cylinder, so that the inner ring is sleeved on the small cylinder, a plurality of side teeth are arranged on the side wall of the outer ring of the side tooth mounting ring along the circumferential direction, and a circle of a plurality of semicircular flow guide holes which penetrate upwards are arranged on the lower end face of the side tooth mounting ring along the outer wall of the large cylinder;
the inner ring is provided with an internal thread matched with the external thread, so that the inner ring is screwed on the small cylinder and tightly presses the side tooth mounting ring.
Preferably, for the variable diameter down-the-hole drill bit, the intermediate teeth and the side teeth are both alloy teeth.
Preferably, for the variable diameter down-the-hole drill, the diameter of the outer ring of the retainer ring is the same as the diameter of the large cylinder.
Preferably, the down-the-hole drill with the variable diameter is provided with a plurality of side tooth mounting rings, and the ring body width of each side tooth mounting ring is different.
Preferably, for the down-the-hole drill with the variable diameter, an inward concave slotted hole is formed in the outer side wall of the fixing ring.
Compared with the prior art, the invention has the beneficial effects that:
the down-the-hole drill bit comprises a step-shaped drill bit, a drill tail, side tooth mounting rings and fixing rings, wherein middle teeth at the top of the drill bit are used for submerging, side teeth on the side tooth mounting rings are used for reaming, each drill bit is provided with a plurality of side tooth mounting rings with different ring body widths, when the hole diameter of a drilled hole needs to be changed, the fixing rings are unscrewed from a small cylinder, then the side tooth mounting rings can be taken down, then the side tooth mounting rings with larger or smaller ring body widths are replaced, and the fixing rings are screwed up again for fastening, so that the distance between the side teeth and the center of the drill bit is correspondingly increased or decreased after the replacement, and the drilled hole has a larger or smaller hole diameter. When the down-the-hole drill bit provided by the invention needs to drill holes with different apertures, the whole down-the-hole drill bit does not need to be replaced, and only one side tooth mounting ring with different specifications needs to be replaced.
Drawings
FIG. 1 is a cross-sectional view of the present invention as a whole;
fig. 2 is a top view of the present invention.
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. 1-2, the present invention provides a technical solution: a variable diameter down-the-hole drill bit comprising:
the drill bit 1 is a stepped hole-shaped structure formed by an upper small cylinder 101 and a lower large cylinder 102, a plurality of middle teeth 2 are arranged at the top of the small cylinder 101, and external threads are arranged at the upper part of the side wall of the small cylinder 101;
the drill tail 3 is of a columnar structure and is connected to the center of the bottom surface of the large cylinder 102, and the drill tail 3 is used for installing a drill bit on a drilling tool;
the side tooth mounting ring 4 is of an annular structure, an anti-skid washer 5 is fixed on the inner ring of the side tooth mounting ring, the diameter of the inner ring is the same as that of the small cylinder 101, so that the inner ring is sleeved on the small cylinder 101, a plurality of side teeth 6 are arranged on the side wall of the outer ring of the side tooth mounting ring along the annular direction, and a circle of a plurality of semicircular flow guide holes 7 which penetrate upwards are arranged on the lower end face of the side tooth mounting ring 4 along the outer wall of the large cylinder 102; the anti-skid washer 5 is made of rubber materials or polyester materials, the binding force between the side tooth mounting ring 4 and the small cylinder 101 can be enhanced, the flow guide holes 7 have the function that in the drilling process, sand and stones accumulated on the side tooth mounting ring 4 can fall down from the flow guide holes 7, and the phenomenon that the sand and stones are accumulated on the side tooth mounting ring 4 to increase the consumption of a drilling tool is avoided;
the fixed ring 8 is also of an annular structure, the diameter of the inner ring of the fixed ring is the same as that of the small cylinder 101, and the inner ring is provided with an internal thread matched with the external thread, so that the fixed ring is screwed on the small cylinder 101 and presses the side tooth mounting ring 4 tightly.
When the hole diameter of the drilled hole needs to be changed, the fixing ring 8 is firstly screwed off from the small cylinder 101, then the side tooth mounting ring 4 can be taken off, the side tooth mounting ring 4 with the larger or smaller ring body width is replaced, and the fixing ring 8 is screwed on again for fastening, so that after replacement, the distance between the side teeth 6 and the center of the drill bit is correspondingly increased or decreased, and the drilled hole has a larger or smaller hole diameter. When the down-the-hole drill bit provided by the invention needs to drill holes with different apertures, the whole down-the-hole drill bit does not need to be replaced, and only one side tooth mounting ring with different specifications needs to be replaced.
In another embodiment, the middle teeth 2 and the side teeth 6 are both alloy teeth.
In another embodiment, the diameter of the outer ring of the retainer ring 8 is the same as the diameter of the large cylinder 102.
In another embodiment, the side-teeth mounting ring 4 is provided in plurality, and the ring body width of each side-teeth mounting ring 4 is different.
In another embodiment, the outer side wall of the fixing ring 8 is provided with a groove hole 9 which is recessed inwards, and the groove hole 9 is used for inserting a seesaw rod and other auxiliary tools into the groove hole 9 when the fixing ring 8 is unscrewed, and the seesaw rod is pushed to unscrew the fixing ring 8 conveniently.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A variable diameter down-the-hole drill bit, comprising:
the drill bit is of a step hole-shaped structure formed by an upper small cylinder and a lower large cylinder, a plurality of middle teeth are arranged at the top of the small cylinder, and external threads are arranged at the upper part of the side wall of the small cylinder;
the drill tail is of a columnar structure and is connected to the center of the bottom surface of the large cylinder;
the side tooth mounting ring is of an annular structure, an anti-skid washer is fixed on the inner ring of the side tooth mounting ring, the diameter of the inner ring is the same as that of the small cylinder, so that the inner ring is sleeved on the small cylinder, a plurality of side teeth are arranged on the side wall of the outer ring of the side tooth mounting ring along the circumferential direction, and a circle of a plurality of semicircular flow guide holes which penetrate upwards are arranged on the lower end face of the side tooth mounting ring along the outer wall of the large cylinder;
the inner ring is provided with an internal thread matched with the external thread, so that the inner ring is screwed on the small cylinder and tightly presses the side tooth mounting ring.
2. The variable diameter down-the-hole drill bit of claim 1, wherein the middle and side teeth are alloy teeth.
3. The variable diameter down-the-hole drill bit of claim 1, wherein the outer ring of the retainer ring has a diameter that is the same as the diameter of the large cylinder.
4. The variable diameter down-the-hole drill bit of claim 1, wherein the side tooth collar is provided in plurality and the collar body width of each side tooth collar is different.
5. The variable diameter down-the-hole drill bit of claim 1, wherein the outer sidewall of the retainer ring is provided with an inwardly recessed slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811477271.0A CN111270985A (en) | 2018-12-05 | 2018-12-05 | Down-the-hole drill bit with variable diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811477271.0A CN111270985A (en) | 2018-12-05 | 2018-12-05 | Down-the-hole drill bit with variable diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111270985A true CN111270985A (en) | 2020-06-12 |
Family
ID=70994731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811477271.0A Pending CN111270985A (en) | 2018-12-05 | 2018-12-05 | Down-the-hole drill bit with variable diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111270985A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2053234U (en) * | 1989-04-27 | 1990-02-21 | 中国矿业大学 | Slotted drill bit for hidden-hole driller and its slotting device |
| CN1515779A (en) * | 2003-08-29 | 2004-07-28 | 西南石油学院 | Stepless reducing gauge protection device |
| CN2654617Y (en) * | 2003-09-25 | 2004-11-10 | 王健 | Steel outlet expanding drill |
| CN202645434U (en) * | 2012-04-26 | 2013-01-02 | 田仁礼 | Eccentric simultaneous casing drilling tool for expanding holes through rotation |
| CN205172439U (en) * | 2015-10-27 | 2016-04-20 | 袁啟法 | Modular ground drill bit |
| CN106661924A (en) * | 2014-08-20 | 2017-05-10 | 三菱综合材料株式会社 | Excavation tool |
| CN206903593U (en) * | 2017-07-20 | 2018-01-19 | 成都惠灵丰金刚石钻头有限公司 | A kind of novel wear resistant block gage protecting bit |
| CN207988949U (en) * | 2018-04-03 | 2018-10-19 | 西华大学 | A kind of adjustable drilling bit of rotary-digging drilling rig of diameter |
-
2018
- 2018-12-05 CN CN201811477271.0A patent/CN111270985A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2053234U (en) * | 1989-04-27 | 1990-02-21 | 中国矿业大学 | Slotted drill bit for hidden-hole driller and its slotting device |
| CN1515779A (en) * | 2003-08-29 | 2004-07-28 | 西南石油学院 | Stepless reducing gauge protection device |
| CN2654617Y (en) * | 2003-09-25 | 2004-11-10 | 王健 | Steel outlet expanding drill |
| CN202645434U (en) * | 2012-04-26 | 2013-01-02 | 田仁礼 | Eccentric simultaneous casing drilling tool for expanding holes through rotation |
| CN106661924A (en) * | 2014-08-20 | 2017-05-10 | 三菱综合材料株式会社 | Excavation tool |
| CN205172439U (en) * | 2015-10-27 | 2016-04-20 | 袁啟法 | Modular ground drill bit |
| CN206903593U (en) * | 2017-07-20 | 2018-01-19 | 成都惠灵丰金刚石钻头有限公司 | A kind of novel wear resistant block gage protecting bit |
| CN207988949U (en) * | 2018-04-03 | 2018-10-19 | 西华大学 | A kind of adjustable drilling bit of rotary-digging drilling rig of diameter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111270985A (en) | Down-the-hole drill bit with variable diameter | |
| CN204248144U (en) | A kind of tapping guider | |
| CN202606931U (en) | Drill jig for punching flanges | |
| CN110681892A (en) | Cup joint formula pagoda bores | |
| CN104889458A (en) | Drill bit | |
| CN111271000A (en) | Down-the-hole drill bit | |
| CN205629472U (en) | Hollow combined drill | |
| CN211059164U (en) | Five metals threaded connection spare | |
| KR20190110818A (en) | Wheel nut for vehicle and manufacturing method thereof | |
| CN204267493U (en) | Anti-loose bolt nut assembly | |
| CN211287560U (en) | Straight edge stabilizer with replaceable sleeve | |
| CN203822807U (en) | Screw | |
| US1858980A (en) | Roller bit | |
| JP3128497U (en) | Torsion bit with plastic encapsulation | |
| CN210660963U (en) | Oil drainage screw | |
| CN203696931U (en) | Fastening device of drill bushing | |
| CN207701577U (en) | A kind of locked anticreep screwed pipe component | |
| CN206943163U (en) | A kind of ladder locating pin structure | |
| RU175434U1 (en) | Replaceable screw bit | |
| CN204755531U (en) | Durable self -tapping screw | |
| CN217603113U (en) | Screw with chip guide function | |
| CN205551565U (en) | Tapper | |
| CN203343498U (en) | Drilling bit capable of being fast replaced | |
| CN203330467U (en) | Drill bit quick to replace | |
| CN203599592U (en) | Split type twist drill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200612 |