CN202000918U - Coal drill pipe - Google Patents
Coal drill pipe Download PDFInfo
- Publication number
- CN202000918U CN202000918U CN2011201346386U CN201120134638U CN202000918U CN 202000918 U CN202000918 U CN 202000918U CN 2011201346386 U CN2011201346386 U CN 2011201346386U CN 201120134638 U CN201120134638 U CN 201120134638U CN 202000918 U CN202000918 U CN 202000918U
- Authority
- CN
- China
- Prior art keywords
- joint
- drilling rod
- drill pipe
- coal
- pole segments
- 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
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Abstract
The utility model discloses a coal drill pipe, which comprises a joint I used for being connected with a drill, a joint II used for being connected with a power device, and an intermediate rod section, wherein the joint I and the joint II are respectively arranged at the two ends of the intermediate rod section, and the joint I, the joint II and the intermediate rod section are integrated to form an integrated structure. In the coal drill pipe, the joint I, the joint II and the intermediate rod section are of the integrated structure, the strength is high, and the mechanical property is good; meanwhile, the integrated structure easily ensures the accuracy of mutual position between parts in processing, so the dimensional accuracy is high; and especially, the coaxiality of the joints I and II is good, so the mechanical property of the drill pipe can be further improved, and the service life of the drill pipe is long.
Description
Technical field
The utility model relates to a kind of drilling rod.
Background technology
The coal drilling rod is one of the bigger instrument that consumes in the coal digging.Traditional drilling rod generally is made up of three parts: the joint I that is used for connecting with drill bit, be used for the joint II and the intermediate pole segments that connect with power set.Prior art center tap I and joint II are fixedly installed on the two ends of intermediate pole segments respectively by the mode of welding.
Drilling rod of the prior art has more shortcoming:, welding quality difficult control complicated as a, welding procedure; The ability that b, welding drilling rod bear moment of flexure and moment of torsion is strong inadequately; The difficult control of the axiality of c, welding drilling rod two joints, the drilling rod precision is lower; D; The drilling rod life-span is shorter.
Therefore need improve drilling rod of the prior art, promote the drilling rod total quality, prolong the drilling rod life-span.
The utility model content
In view of this, the purpose of this utility model provides a kind of coal drilling rod, its dimensional accuracy height, and whole stress-bearing capability is strong, long service life.
The utility model coal drilling rod, comprise the joint I that is used for connecting, be used for the joint II and the intermediate pole segments that connect with power set with drill bit, described joint I and joint II are separately positioned on the intermediate pole segments two ends, and described joint I, intermediate pole segments and joint II are monolithic construction, make one.
Further, described joint I is an outer cone screw-type joint;
Further, described joint II is a female cone screw-type joint;
Further, described joint I, intermediate pole segments and joint II are the solid forging moulding.
The beneficial effects of the utility model: the utility model coal drilling rod, joint I, intermediate pole segments and joint II are monolithic construction, the intensity height, stress performance is good; The monolithic construction work in-process guarantees the mutual alignment precision between each position easily simultaneously, thereby the axiality of dimensional accuracy height, particularly joint I and joint II is good, can further improve the drilling rod stress performance, and the drilling rod life-span is long.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is the utility model coal jackrod structure schematic diagram.
The specific embodiment
Fig. 1 is the utility model coal jackrod structure schematic diagram.
As shown in the figure, present embodiment coal drilling rod, comprise the joint I 1 that is used for connecting, be used for the joint II 2 and the intermediate pole segments 3 that connect with power set with drill bit, described joint I 1 and joint II 2 are separately positioned on intermediate pole segments 3 two ends, described joint I 1, intermediate pole segments 3 and joint II 2 are monolithic construction, make one.The utility model coal drilling rod, joint I, intermediate pole segments and joint II are monolithic construction, the intensity height, stress performance is good; The monolithic construction work in-process guarantees the mutual alignment precision between each position easily simultaneously, thereby the axiality of dimensional accuracy height, particularly joint I and joint II is good, can further improve the drilling rod stress performance, and the drilling rod life-span is long.
In the present embodiment, described joint I 1 is an outer cone screw-type joint, and with the drill bit threaded engagement, assembling speed is fast, the efficient height; Described joint II 2 is female cone screw-type joint, and is fast with the power set assembling speed, the efficient height.
In the present embodiment, described joint I 1, intermediate pole segments 3 and joint II 2 are the solid forging moulding, and the drilling rod total quality is consistent, and holistic resistant behavior is good.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (4)
1. coal drilling rod, comprise the joint I that is used for connecting, be used for the joint II and the intermediate pole segments that connect with power set with drill bit, described joint I and joint II are separately positioned on the intermediate pole segments two ends, it is characterized in that: described joint I, intermediate pole segments and joint II are monolithic construction, make one.
2. coal drilling rod according to claim 1 is characterized in that: described joint I is an outer cone screw-type joint.
3. coal drilling rod according to claim 1 is characterized in that: described joint II is a female cone screw-type joint.
4. according to the described coal drilling rod of arbitrary claim in the claim 1 to 3, it is characterized in that: described joint I, intermediate pole segments and joint II are the solid forging moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201346386U CN202000918U (en) | 2011-04-29 | 2011-04-29 | Coal drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201346386U CN202000918U (en) | 2011-04-29 | 2011-04-29 | Coal drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202000918U true CN202000918U (en) | 2011-10-05 |
Family
ID=44703663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201346386U Expired - Fee Related CN202000918U (en) | 2011-04-29 | 2011-04-29 | Coal drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202000918U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926673A (en) * | 2012-12-02 | 2013-02-13 | 中国石油化工股份有限公司 | Destabilization-prevention oil pipe joint |
| CN106563918A (en) * | 2015-10-12 | 2017-04-19 | 重庆美通钻杆制造有限公司 | Machining technology of integrated triangular drill pipe |
-
2011
- 2011-04-29 CN CN2011201346386U patent/CN202000918U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926673A (en) * | 2012-12-02 | 2013-02-13 | 中国石油化工股份有限公司 | Destabilization-prevention oil pipe joint |
| CN106563918A (en) * | 2015-10-12 | 2017-04-19 | 重庆美通钻杆制造有限公司 | Machining technology of integrated triangular drill pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20120429 |