CN202810689U - Mining drill pipe - Google Patents
Mining drill pipe Download PDFInfo
- Publication number
- CN202810689U CN202810689U CN 201220181973 CN201220181973U CN202810689U CN 202810689 U CN202810689 U CN 202810689U CN 201220181973 CN201220181973 CN 201220181973 CN 201220181973 U CN201220181973 U CN 201220181973U CN 202810689 U CN202810689 U CN 202810689U
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- drilling rod
- drill
- drill pipe
- thread
- cone thread
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Abstract
The utility model discloses a mining drill pipe. The mining drill pipe comprises a hollow main body, wherein an outer-cone thread and an inner-cone thread, which are matched with each other and quenched at high frequency, are arranged at the two ends of the hollow main body; and the jointing surface of the outer-cone thread and the inner-cone thread is a conical surface. The drill pipe is simply structured and conveniently manufactured on a large scale; as the welding is not needed during connecting the drill pipes, the connection of the drill pipes is environment friendly, the connecting parts are uneasy to snap and the service lives of the drill pipes are greatly prolonged; as the drill pipe is high in integral hardness, wear resistant, watertight and airtight, bending and cracking of the drill pipe caused by outside force in the drilling process are avoided and the service life of the drill pipe is further prolonged; as the drill pipes are connected with each other through threads, the drill pipes are convenient to integrally and partially assemble and disassemble and the threaded connection is beneficial for maintaining and replacing the drill pipes; it is proved by practices that the welding part of the welded drill pipes are snapped when being used for hundreds of meters and require to be replaced; and the weldless drill pipe disclosed by the utility model cannot be bent and cracked when the drilling footage reaches 8000 m.
Description
Technical field
The utility model belongs to the drilling tool technical field, specifically a kind of mining drilling rod.
Background technology
Drilling rod is to the drill bit transferring power, enters the shaft-like or tubular member of boring in company with drill bit.Usually coal mining enterprise's boring is dark; required rig power is large; and drilling rod adopts thin-wall seamless pipe more; two ends add first steel welding fabrication; usually can bend, rupture, leak, the phenomenon such as gas leakage; cause drilling rod to come off, salvage drilling tool, maintenance or change drilling rod etc., had a strong impact on production efficiency, thus coal production enterprise need more durable, be convenient to the drilling rod that keeps in repair or change.
Along with the development of science and technology, the drilling rod that present most coal mining enterprises adopt comprises pin thread drilling rod, middle brace rod, box drilling rod, and wherein the pin thread drilling rod connects middle brace rod by electric welding, and middle brace rod connects the box drilling rod by electric welding again.Obviously there are many deficiencies in this drilling rod,, is not easy to maintenance or changes drilling rod by being welded such as drilling rod; Weld simultaneously not environmental protection, and the easy fracture of weld, affected the application life of drilling rod, increased the maintenance times of drilling rod, reduced the production efficiency of coal mining enterprise.
The utility model content
The purpose of this utility model is to provide a kind of mining drilling rod that need not weld, this drilling rod maintenance and replacing are convenient, and simple in structure, be convenient to the batch production, simultaneously mining drilling rod integral hardness is high, wear-resisting, long service life, reduce the shut-down maintenance times, greatly improved the production efficiency of coal mining enterprise.
The technical solution of the utility model is as follows: a kind of mining drilling rod, and it comprises hollow body, and the two ends of hollow body are provided with outer cone thread and the inside tapered thread of mutual coupling and process high-frequency quenching, and the mating face of outer cone thread and inside tapered thread is the conical surface.
Because the hollow body two ends are provided with outer cone thread and the inside tapered thread of mutual coupling, therefore can connect with inside tapered thread by the outer cone thread of mutual coupling between the drilling rod, although can be connected to indefinite length in theory, but owing to be subject to the impact of rig watt level, adopt several drilling rods to be connected to Len req and get final product.
Owing to be to adopt some drilling rods to be threaded connection to be used in combination in the actual condition, each drilling rod simple in structure, therefore flexible, convenient, fast, the environmental protection of drilling rod loading and unloading, the outer cone thread of two ends of drill and inside tapered thread are through high-frequency quenching simultaneously, the intensity of ridge and abrasion resistance improve, and have avoided the drilling rod junction stripped thread to occur and have caused the drilling rod junction to occur coming off, and have prolonged the application life of drilling rod, reduce the shut-down maintenance times, greatly improved the production efficiency of coal mining enterprise.The mating face of drilling rod outer cone thread and inside tapered thread is the conical surface, adopts this kind taper fit can increase contact area, improves the seal of connecting portion, prevents that leaking, leaking gas from appearring in the drilling rod hollow part.
It is the heavy seamless steel pipe of 20CrMnTi or the geological tube of R780 that hollow body adopts material, purpose is to strengthen the integral hardness of drilling rod, prevent that drilling rod is subject to external force and bends, ruptures in drilling process, prolong the application life of drilling rod, reduce the shut-down maintenance times.
Outer cone thread adopts the moulding of the thick tube wall time processing of forging and pressing upsetting.Namely when the processing outer cone thread, at first adopt the thick tube wall of forging and pressing upsetting, and then once finish the processing of outer cone thread.The purpose of the thick tube wall of upsetting is the thickness that increases drilling rod external screw thread root, avoids connecting portion fracture in drilling process, prevents drill bit and part drill rod breaking in boring and needs to stop work and salvage, and has improved the production efficiency of coal mining enterprise.
The ore deposit bar that the technical program provides is compared the welding drilling rod, and it more is conducive to bulk handling and the part loading and unloading of drilling rod, and also more difficult fracture of the connecting portion of drilling rod, the application life of greatly having improved drilling rod.
In sum, remarkable result of the present utility model is: jackrod structure is simple, be convenient to batch production; Drilling rod connects and does not need welding, not only environmental protection, and also connecting portion is compared the more difficult fracture of welding, the application life of greatly having improved drilling rod; The drilling rod integral hardness is high, wear-resisting, water-tight, air tight, has avoided drilling rod to be subject to external force in drilling process and has bent, ruptures, and has further improved the application life of drilling rod; Be threaded connection between drilling rod in addition, be convenient to integral body and part loading and unloading, be conducive to maintenance and the replacing of drilling rod, be proven, the welding drilling rod uses just to be needed about hundreds of rice to change, and welding drilling rod drilling depth of the present utility model reaches 8000 meters bending, phenomenon of rupture can not occur.
Description of drawings
Fig. 1 is the structural representation of the mining drilling rod of the utility model;
Fig. 2 is the partial structurtes enlarged drawing at I place among Fig. 1;
Fig. 3 is the interconnective structural representations of the utility model two mining drilling rods.
The specific embodiment
Below in conjunction with concrete drawings and embodiments the utility model is further described.
Referring to Fig. 1, a kind of mining drilling rod comprises hollow body 10, and the two ends of hollow body 10 are provided with outer cone thread 20 and the inside tapered thread 30 of mutual coupling and process high-frequency quenching, and outer cone thread 20 is the conical surface with the mating face 40 of inside tapered thread 30.
Because outer cone thread 20 and the inside tapered thread 30 at hollow body 10 two ends mate mutually, therefore can utilize the cooperation of outer cone thread 20 and inside tapered thread 30 to connect to form the probing drilling rod between the drilling rod, simple in structure, the loading and unloading of each drilling rod flexibly, do not need welding, the user can be connected to the probing Len req as required, also can carry out as required the part dismounting, also be convenient to simultaneously when part bending or fracture occur drilling rod, safeguard or change.
For intensity and the abrasion resistance that improves ridge, to avoid occurring the drilling rod junction that stripped thread causes and occur coming off, outer cone thread 20 and inside tapered thread 30 are through high-frequency quenchings.
Referring to Fig. 2, be connected with internal thread 30 by external screw thread 20 between the drilling rod, mating face 40 when interconnecting is the conical surface, in other words, drilling rod outer cone thread 20 is the conical surface with the mating face 40 of inside tapered thread 30, adopt this kind taper fit can increase contact area, improve the seal of connecting portion, prevent that leaking, leaking gas from appearring in the drilling rod hollow part.
Preferably, mating face 40 is 20 °～30 ° with the angle of hollow body 10 vertical cross-sections.In the present embodiment, mating face 40 is 20 ° with the angle β of hollow body 10 vertical cross-sections.
Referring to Fig. 1, it is the heavy seamless steel pipe of 20CrMnTi or the geological tube of R780 that hollow body 10 adopts material.In the present embodiment, hollow body 10 adopts the heavy seamless steel pipe of 20CrMnTi, and purpose is to strengthen the integral hardness of drilling rod, prevents that drilling rod is subject to external force and bends, ruptures in drilling process, prolongs the application life of drilling rod, reduces the shut-down maintenance times.
Preferably, outer cone thread 20 adopts the moulding of the thick tube wall time processing of forging and pressing upsetting, namely when threading 20, at first passes through the thick tube wall of forging and pressing upsetting, and then once finishes the processing of outer cone thread 20.The purpose of the thick tube wall of upsetting is the thickness that increases drilling rod outer cone thread and external screw thread root, avoids connecting portion fracture in drilling process, prevents drill bit and part drill rod breaking in the down-hole and the salvaging that needs to stop work, and has improved the production efficiency of coal mining enterprise.
Drilling rod under the mining operating mode is interconnected by some described drilling rods and to form, and referring to Fig. 3, is connected by outer cone thread 20 and inside tapered thread 30 between the drilling rod.
During use, at first adopt some drilling rods to connect into Len req, drilling rod one end that connects to form is outer cone thread, the other end then is inside tapered thread, and the inside tapered thread end is assemblied on the rig, and the outer cone thread end connects drill bit, then start rig, rig drives drilling rod and drill bit rotates.
Usually, welding drilling rod drilling depth is to about the hundreds of rice, and the welding position will fracture, and drill bit and part drilling rod come off in boring, and need the salvaging of stopping work this moment, affected the production efficiency of enterprise; Be proven, welding drilling rod drilling depth of the present utility model reaches 8000 meters bending, phenomenon of rupture can not occur, has greatly improved the application life of drilling rod, has also reduced the number of times that coal mining enterprise stops work and safeguards, has improved the production efficiency of coal mining enterprise.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. mining drilling rod, it is characterized in that: comprise hollow body (10), the two ends of hollow body (10) are provided with outer cone thread (20) and the inside tapered thread (30) of mutual coupling and process high-frequency quenching, and outer cone thread (20) is the conical surface with the mating face (40) of inside tapered thread (30).
2. mining drilling rod according to claim 1 is characterized in that: it is the heavy seamless steel pipe of 20CrMnTi or the geological tube of R780 that described hollow body (10) adopts material.
3. mining drilling rod according to claim 1 is characterized in that: the moulding of the thick tube wall time processing of described outer cone thread (20) employing forging and pressing upsetting.
4. mining drilling rod according to claim 1 is characterized in that: described mating face (40) are 20 °～30 ° with the angle of hollow body (10) vertical cross-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220181973 CN202810689U (en) | 2012-04-25 | 2012-04-25 | Mining drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220181973 CN202810689U (en) | 2012-04-25 | 2012-04-25 | Mining drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202810689U true CN202810689U (en) | 2013-03-20 |
Family
ID=47869587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220181973 Expired - Fee Related CN202810689U (en) | 2012-04-25 | 2012-04-25 | Mining drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202810689U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628339A (en) * | 2012-04-25 | 2012-08-08 | 雷敏 | Mine drill stem |
| CN103670292A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Mining drill rod device |
-
2012
- 2012-04-25 CN CN 201220181973 patent/CN202810689U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628339A (en) * | 2012-04-25 | 2012-08-08 | 雷敏 | Mine drill stem |
| CN103670292A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Mining drill rod device |
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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: 20130320 Termination date: 20140425 |