CN203867471U - Gauge protection down-the-hole drill bit - Google Patents
Gauge protection down-the-hole drill bit Download PDFInfo
- Publication number
- CN203867471U CN203867471U CN201420295137.XU CN201420295137U CN203867471U CN 203867471 U CN203867471 U CN 203867471U CN 201420295137 U CN201420295137 U CN 201420295137U CN 203867471 U CN203867471 U CN 203867471U
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- CN
- China
- Prior art keywords
- drill
- drill bit
- base
- gauge
- connecting rod
- 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.)
- Expired - Fee Related
Links
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 21
- 239000010432 diamond Substances 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000011159 matrix material Substances 0.000 claims description 36
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 11
- 230000004323 axial length Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
保径潜孔钻头，包括具有外花键结构的连接杆，连接杆一端设有钻头基体，连接杆另一端沿轴向设有一条直向通道，钻头基体内设有内端均与直向通道连通的三条斜向通道，所述钻头基体的端面和圆周面分别设有凹槽，钻头基体端面的凹槽内设有凸出于钻头基体的耐磨钻齿，耐磨钻齿凸出于钻头基体外的部分呈半球状结构，钻头基体圆周面的凹槽内设有与钻头基体保持平整的保径齿，耐磨钻齿和保径齿均由聚晶金刚石复合片和/或聚晶金刚石制成。本实用新型确保了钻头基体的外径能在长时间的使用过程中保持恒定的尺寸，确保孔径的大小，从而提高了作业效率，延长了潜孔钻头的使用寿命，减少了潜孔钻头的更换次数，进而降低了施工成本，提高工作效率。
The diameter-gauge down-the-hole drill bit includes a connecting rod with an external spline structure. One end of the connecting rod is provided with a drill base, and the other end of the connecting rod is provided with a straight passage along the axial direction. The inner end of the drill base is provided with a straight passage There are three connected oblique passages. The end face and the circumferential surface of the drill base are respectively provided with grooves. The grooves on the end face of the drill base are provided with wear-resistant drill teeth protruding from the drill base. The wear-resistant drill teeth protrude from the drill bit. The part outside the base has a hemispherical structure, and the groove on the peripheral surface of the drill base is equipped with gauge teeth that are kept flat with the base of the drill bit. Both the wear-resistant drill teeth and the gauge teeth are made of polycrystalline diamond composite sheets and/or polycrystalline diamond production. The utility model ensures that the outer diameter of the base body of the drill bit can maintain a constant size during long-term use and ensures the size of the hole diameter, thereby improving the operating efficiency, prolonging the service life of the down-the-hole drill bit, and reducing the replacement of the down-the-hole drill bit The number of times, thereby reducing construction costs and improving work efficiency.
Description
Technical field
The utility model relates to a kind of down-the-hole air hammer, relates in particular to a kind of gauge down-the-hold drill bit.
Background technology
At present, down-the-hold drill bit creeps into underground mine, quarry, hydroelectric project, well in the open, the construction plant such as mineral prospecting, rock mass cable wire anchor hole Drilling, underground heat cutting, subway engineering excavation, skirt piles supporting uses in a large number.In traditional technology, down-the-hold drill bit is by hard-metal insert head and steel matrix composition.In medium hardness and partially soft rock stratum, traditional down-the-hold drill bit instrument can meet requirement of engineering, but while running into the strong rock stratum of the hard granite in rock stratum or abrasiveness, the steel matrix serious wear of down-the-hold drill bit, cause hard-metal insert head to come off too early, the external diameter that shows drill bit reduces, the life-span is short, the weak tendency of inefficiency, not only affect quality and the progress of engineering, also cause human and material resources and raw-material a large amount of waste.Therefore, be necessary to study a kind of high performance gauge down-the-hold drill bit, make the steel matrix of down-the-hold drill bit there is high abrasion resistance, ensure that the external diameter of drill bit does not diminish, extend down-the-hold drill bit application life, improve tool performance, save material.
Utility model content
The utility model is in order to solve weak point of the prior art, provides that a kind of Drilling efficiency is high, abrasion resistance strong, the gauge down-the-hold drill bit of long service life.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: gauge down-the-hold drill bit, comprise the connecting rod with external splines structure, connecting rod external surface is along the jump-ring slot that is circumferentially with annular, connecting rod one end is provided with bit matrix, the connecting rod other end is provided with one vertically directly to passage, in bit matrix, be provided with inner all with straight three slanted channels to channel connection, end face and the periphery of described bit matrix are respectively equipped with groove, in the groove of bit matrix end face, be provided with the wear-resisting brill tooth that protrudes from bit matrix, the part that wear-resisting brill tooth protrudes from outside bit matrix is hemispherical structure, in the groove of bit matrix periphery, be provided with bit matrix and keep smooth gauge teeth, wear-resisting brill tooth and gauge teeth are made by composite polycrystal-diamond and/or polycrystalline diamond.
Described bit matrix is evenly provided with a circle, and composite polycrystal-diamond is made up of cemented carbide substrate layer and polycrystalline diamond layer, and the thickness of polycrystalline diamond layer is 0.1～4.0mm.
Described gauge teeth is cylindrical structural, and the external diameter of gauge teeth is that 4mm～16mm, axial length are 6mm～10mm.
Adopt technique scheme, connecting rod plug in the middle of card drill sleeve and with card drill sleeve spline joint, pressure-air is sent to the work plane of bit matrix by straight three slanted channels in passage and bit matrix in connecting rod.The utlity model has following beneficial effect:
1, the utility model is that the high-wearing feature of composite polycrystal-diamond, polycrystalline diamond, stronger impact resistance are applied on down-the-hold drill bit, the external diameter of having guaranteed bit matrix keeps constant size in long use procedure, guarantee the size in aperture, thereby improve operating efficiency, extend the application life of down-the-hold drill bit, reduce the replacing number of times of down-the-hold drill bit, and then reduced construction cost, increased work efficiency.
2, the external diameter of wear-resisting brill tooth and gauge teeth, length equidimension are the optimization technique parameters for economy and overall balance in application life.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, gauge down-the-hold drill bit of the present utility model, comprise the connecting rod 1 with external splines structure, connecting rod 1 external surface is along the jump-ring slot 9 that is circumferentially with annular, connecting rod 1 one end is provided with bit matrix 2, connecting rod 1 other end is provided with one vertically directly to passage 3, in bit matrix 2, be provided with inner all with straight three slanted channels 4 that are communicated with to passage 3, end face and the periphery of bit matrix 2 are respectively equipped with groove, in the groove of bit matrix 2 end faces, be provided with the wear-resisting brill tooth 5 that protrudes from bit matrix 2, the part that wear-resisting brill tooth 5 protrudes from outside bit matrix 2 is hemispherical structure, in the groove of bit matrix 2 peripheries, be provided with bit matrix 2 and keep smooth gauge teeth 6, wear-resisting brill tooth 5 and gauge teeth 6 are made by composite polycrystal-diamond and/or polycrystalline diamond.
Bit matrix 2 is evenly provided with a circle, and composite polycrystal-diamond is made up of cemented carbide substrate layer 7 and polycrystalline diamond layer 8, and the thickness of polycrystalline diamond layer 8 is 0.1～4.0mm.Gauge teeth 6 is cylindrical structural, and the external diameter of gauge teeth 6 is that 4mm～16mm, axial length are 6mm～10mm.The external diameter of wear-resisting brill tooth 5 and gauge teeth 6, length equidimension are the optimization technique parameters for economy and overall balance in application life.
The utility model in the time that work is used, connecting rod 1 plug in the middle of card drill sleeve and with card drill sleeve spline joint, pressure-air is sent to the work plane of bit matrix 2 by straight three slanted channels 4 in passage 3 and bit matrix 2 in connecting rod 1.The utility model is that the high-wearing feature of composite polycrystal-diamond, polycrystalline diamond, stronger impact resistance are applied on down-the-hold drill bit, the external diameter of having guaranteed bit matrix 2 keeps constant size in long use procedure, guarantee the size in aperture, thereby improve operating efficiency, extend the application life of down-the-hold drill bit, reduce the replacing number of times of down-the-hold drill bit, and then reduced construction cost, increased work efficiency.
Above-described embodiment is not done any pro forma restriction to shape of the present utility model, material, structure etc.; any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all belong to the protection domain of technical solutions of the utility model.
Claims (3)
1. gauge down-the-hold drill bit, comprise the connecting rod with external splines structure, connecting rod external surface is along the jump-ring slot that is circumferentially with annular, connecting rod one end is provided with bit matrix, the connecting rod other end is provided with one vertically directly to passage, in bit matrix, be provided with inner all with straight three slanted channels to channel connection, it is characterized in that: end face and the periphery of described bit matrix are respectively equipped with groove, in the groove of bit matrix end face, be provided with the wear-resisting brill tooth that protrudes from bit matrix, the part that wear-resisting brill tooth protrudes from outside bit matrix is hemispherical structure, in the groove of bit matrix periphery, be provided with bit matrix and keep smooth gauge teeth, wear-resisting brill tooth and gauge teeth are made by composite polycrystal-diamond and/or polycrystalline diamond.
2. gauge down-the-hold drill bit according to claim 1, is characterized in that: described bit matrix is evenly provided with a circle, composite polycrystal-diamond is made up of cemented carbide substrate layer and polycrystalline diamond layer, and the thickness of polycrystalline diamond layer is 0.1～4.0mm.
3. gauge down-the-hold drill bit according to claim 1 and 2, is characterized in that: described gauge teeth is cylindrical structural, and the external diameter of gauge teeth is that 4mm～16mm, axial length are 6mm～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420295137.XU CN203867471U (en) | 2014-06-05 | 2014-06-05 | Gauge protection down-the-hole drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420295137.XU CN203867471U (en) | 2014-06-05 | 2014-06-05 | Gauge protection down-the-hole drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867471U true CN203867471U (en) | 2014-10-08 |
Family
ID=51648441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420295137.XU Expired - Fee Related CN203867471U (en) | 2014-06-05 | 2014-06-05 | Gauge protection down-the-hole drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867471U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214372A (en) * | 2017-05-26 | 2017-09-29 | 无锡钻探工具厂有限公司 | A kind of edge ring glomerocryst and its processing method for long-life bit gauge protection |
| CN110080686A (en) * | 2019-05-14 | 2019-08-02 | 河南四方达超硬材料股份有限公司 | Polycrystalline diamond down-the-hole drill bit |
| CN111270998A (en) * | 2018-12-05 | 2020-06-12 | 武穴市金锐精密锻造有限公司 | Durable down-the-hole drill bit |
| CN112453411A (en) * | 2020-11-23 | 2021-03-09 | 湖南省煤炭地质勘查院 | Downhole drill bit coated with diamond layer by laser 3D printing method and preparation method thereof |
-
2014
- 2014-06-05 CN CN201420295137.XU patent/CN203867471U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214372A (en) * | 2017-05-26 | 2017-09-29 | 无锡钻探工具厂有限公司 | A kind of edge ring glomerocryst and its processing method for long-life bit gauge protection |
| CN107214372B (en) * | 2017-05-26 | 2019-11-19 | 无锡钻探工具厂有限公司 | A kind of processing method of the edge ring plycrystalline diamond for long-life bit gauge protection |
| CN111270998A (en) * | 2018-12-05 | 2020-06-12 | 武穴市金锐精密锻造有限公司 | Durable down-the-hole drill bit |
| CN110080686A (en) * | 2019-05-14 | 2019-08-02 | 河南四方达超硬材料股份有限公司 | Polycrystalline diamond down-the-hole drill bit |
| CN112453411A (en) * | 2020-11-23 | 2021-03-09 | 湖南省煤炭地质勘查院 | Downhole drill bit coated with diamond layer by laser 3D printing method and preparation method thereof |
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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: 20141008 Termination date: 20150605 |
|
| EXPY | Termination of patent right or utility model |