CN203835278U - Splicing structure for PDC drill bit - Google Patents
Splicing structure for PDC drill bit Download PDFInfo
- Publication number
- CN203835278U CN203835278U CN201420251311.0U CN201420251311U CN203835278U CN 203835278 U CN203835278 U CN 203835278U CN 201420251311 U CN201420251311 U CN 201420251311U CN 203835278 U CN203835278 U CN 203835278U
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- CN
- China
- Prior art keywords
- pdc
- drill bit
- shaped connecting
- drill
- connecting rod
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- 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
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Abstract
The utility model relates to a splicing structure for a PDC drill bit. A T-shaped connecting rod is arranged between each PDC piece body and a drill bit body. Each T-shaped connecting rod is provided with a base rod extending along the axis of the drill bit body, wherein a connecting supporting rod extending upwards in an inclined mode is arranged on the base rod. Pressing blocks correspond to the PDC piece bodies one to one and are arranged on the upper portions of the connecting supporting rods. A tin solder pouring passageway is arranged in the center of the drill bit body. A whole embedded structure can be formed by using the T-shaped connecting rods and the pressing blocks, tin solder liquid can be poured by ingeniously using reserved gaps, and therefore all the parts are tightly combined together; meanwhile, the PDC piece bodies and the drill bit body are made of hard alloy, the melting point of the hard allay is far higher than that of tin solder, and therefore the tin solder portion can be molten by directly conducting heating through a spray gun in the maintenance process, the corresponding PDC piece bodies can be replaced, the splicing structure has extremely high practical value, and maintenance cost is reduced.
Description
Technical field
The utility model relates to a kind of splicing construction of PDC drill bit.
Background technology
In known technical field, PDC drill bit is the abbreviation of polycrystalline diamond compact bit, is the conventional a kind of drilling tool of geological drilling industry.Existing drill bit is many by PDC sheet kind, is secondly size and variable thickness sample, but is all cylindrical PDC sheet, and it is not firm when work, to be connected with drill bit, and the impact during easily because of work comes off, and its dismounting simultaneously and maintaining are also difficult problems.
Utility model content
The technical problems to be solved in the utility model is: overcome the problems referred to above, a kind of secure and reliable connection is provided, is convenient to the splicing construction of the PDC drill bit that reduces maintaining cost.
The utility model solves the technical scheme that its technical problem adopts: a kind of splicing construction of PDC drill bit, comprise drill body, centered by the central axis of described drill body, rotary setting has several PDC lamellar bodies, between each PDC lamellar body and drill body, be equipped with T-shaped connecting rod, described T-shaped connecting rod has the base bar extending along the axis of drill body, on described base bar, be provided with the connection pole of stretching out obliquely, described base bar is 35 °～45 ° with the angle being connected between pole, and described base bar is embedded in PDC lamellar body, connecting pole is inserted in drill body, one by one corresponding to each PDC lamellar body, top described connection pole is provided with pressing block, the upper end of described pressing block is hook formation and is embedded in the top surface of PDC lamellar body, be provided with soldering perfusion channel at the center of described drill body, between described T-shaped connecting rod and drill body and PDC lamellar body, be equipped with gap, and described gap is connected with soldering perfusion channel.
Further, as a kind of concrete embodiment, the quantity of the lamellar body of PDC described in the utility model is 6.
Further, in order to make the effect of welding more solid and reliable, pressing block described in the utility model surrounds together and forms cylindrical chamber, and at the indoor multiple tracks annular groove that is provided with of described cylindrical cavity.
The beneficial effects of the utility model are: the utility model adopts T-shaped connecting rod and coordinates pressing block in the type of attachment of existing PDC lamellar body and drill body, can form the structure of overall nested type, simultaneously cleverly by reserved gap, perfusion soldering liquid, all parts is combined closely, simultaneously due to PDC lamellar body and drill body employing carbide alloy, its fusing point is far away higher than the fusing point of soldering, therefore directly heat with spray gun in the time of maintaining, it is fusible soldering part, change with respect to PDC lamellar body, has practical value, reduce the cost of maintaining.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model;
In figure: 1. drill body, 2.PDC lamellar body, 3.T type connecting rod, 31. base bars, 32. connect pole, 4. pressing block, 41. annular grooves, 5. soldering perfusion channel.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present utility model is only described in a schematic way, and therefore it only shows the formation relevant with the utility model.
The preferred embodiment of the splicing construction of the utility model PDC drill bit as shown in Figure 1, comprise drill body 1, centered by the central axis of drill body 1, rotary setting has 6 PDC lamellar bodies 2, between each PDC lamellar body 2 and drill body 1, be equipped with T-shaped connecting rod 3, described T-shaped connecting rod 3 has the base bar 31 extending along the axis of drill body 1, on base bar 31, be provided with the connection pole 32 of stretching out obliquely, described base bar 31 is 35 °～45 ° with the angle being connected between pole 32, and base bar 31 is embedded in PDC lamellar body 2, connecting pole 32 is inserted in drill body 1, one by one corresponding to each PDC lamellar body 2, top described connection pole 32 is provided with pressing block 4, the upper end of described pressing block 4 is hook formation and is embedded in the top surface of PDC lamellar body 2, described pressing block 4 surrounds together and forms cylindrical chamber, and at the indoor multiple tracks annular groove 41 that is provided with of described cylindrical cavity, be provided with soldering perfusion channel 5 at the center of drill body 1, the segment section of soldering perfusion channel 5 is cylindrical chamber, between T-shaped connecting rod 3 and drill body 1 and PDC lamellar body 2, be equipped with gap, and gap is connected with soldering perfusion channel 5.
Taking above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this utility model technological thought, carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on manual, must determine its technical scope according to claim scope.
Claims (3)
1. the splicing construction of a PDC drill bit, comprise drill body (1), it is characterized in that: centered by the central axis of described drill body (1), rotary setting has several PDC lamellar bodies (2), between each PDC lamellar body (2) and drill body (1), be equipped with T-shaped connecting rod (3), described T-shaped connecting rod (3) has the base bar (31) extending along the axis of drill body (1), on described base bar (31), be provided with the connection pole (32) of stretching out obliquely, described base bar (31) is 35 °～45 ° with the angle being connected between pole (32), and described base bar (31) is embedded in PDC lamellar body (2), connecting pole (32) is inserted in drill body (1), one by one corresponding to each PDC lamellar body (2), top described connection pole (32) is provided with pressing block (4), the upper end of described pressing block (4) is hook formation and is embedded in the top surface of PDC lamellar body (2), be provided with soldering perfusion channel (5) at the center of described drill body (1), between described T-shaped connecting rod (3) and drill body (1) and PDC lamellar body (2), be equipped with gap, and described gap is connected with soldering perfusion channel (5).
2. the splicing construction of PDC drill bit as claimed in claim 1, is characterized in that: the quantity of described PDC lamellar body (2) is 6.
3. the splicing construction of PDC drill bit as claimed in claim 1, is characterized in that: described pressing block (4) surrounds together and forms cylindrical chamber, and at the indoor multiple tracks annular groove (41) that is provided with of described cylindrical cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251311.0U CN203835278U (en) | 2014-05-16 | 2014-05-16 | Splicing structure for PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251311.0U CN203835278U (en) | 2014-05-16 | 2014-05-16 | Splicing structure for PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835278U true CN203835278U (en) | 2014-09-17 |
Family
ID=51513135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420251311.0U Expired - Fee Related CN203835278U (en) | 2014-05-16 | 2014-05-16 | Splicing structure for PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443043A (en) * | 2014-09-27 | 2016-03-30 | 中国石油化工集团公司 | PDC drill bit capable of changing blade number |
-
2014
- 2014-05-16 CN CN201420251311.0U patent/CN203835278U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443043A (en) * | 2014-09-27 | 2016-03-30 | 中国石油化工集团公司 | PDC drill bit capable of changing blade number |
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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: 20140917 Termination date: 20150516 |
|
| EXPY | Termination of patent right or utility model |