CN202689971U - Concave screw type circular drill rod - Google Patents
Concave screw type circular drill rod Download PDFInfo
- Publication number
- CN202689971U CN202689971U CN 201220378499 CN201220378499U CN202689971U CN 202689971 U CN202689971 U CN 202689971U CN 201220378499 CN201220378499 CN 201220378499 CN 201220378499 U CN201220378499 U CN 201220378499U CN 202689971 U CN202689971 U CN 202689971U
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- China
- Prior art keywords
- drill rod
- rod
- drilling rod
- screw type
- type circular
- 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 - Lifetime
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Abstract
The utility model relates to a concave screw type circular drill rod which comprises a drill rod main body, wherein a spiral groove is turned on a peripheral wall of an outer circle of the drill rod main body, and a bolt joint and a nut joint on the drill rod main body and a central hole of a rod body are same in diameter. An integrated structure of the rod body and a thread on an outer wall of the rod body is adopted by the concave screw type circular drill rod; according to the structure, the spiral groove is directly turned on the peripheral wall of the rod body, so that a processing process of an integrated drill rod is free from a technology for welding a spiral sheet; the phenomena of the breaking and falling of the welded spiral sheet during a use process and the deformation of the rod body are avoided; the straightness of the drill rod is excellent; the appearance is uniform and beautiful; the deslagging effect is greatly increased; the inner diameter of the drill rod is consistent; and after a gas hole is drilled, an embedded gas drainage pipe can be inserted from the central hole of the drill rod.
Description
Technical field
The utility model relates to a kind of recessed spiral round drill rod.
Background technology
In the recovery process of high fiery colliery, according to the principle of " take out afterwards first and adopt ", must carry out first gas drainage under suction, and institute's use drilling rod in the gas drainage under suction process, spiral drilling rod is subjected to user's favor very much.But present spiral drilling rod, that the flight that welds on the drilling rod outer circumference surface reaches raising deslagging effect purpose, but when welding, exist deformation defect larger, the one, the welding flight in use easily snaps and comes off on the outer circumference surface, the 2nd, can produce welding deformation in the welding process, affect the straightness accuracy of drilling rod, the 3rd, its solder joint affects the attractive in appearance of drilling rod.In addition, the drilling rod that uses at present, the center bore of bolt connector, nut connector and the aperture of the body of rod are inconsistent, can't carry out the operation of pre-buried drawing-off gas pipe: after gas extraction hole breaks into, as it is more to run into the chance of soft seam, after drilling rod is extracted out, the hole phenomenon of collapsing often appears, stop up firedamp taking-out discharging drilling, cause device in Gas can not in time discharge, drain, affect the extraction effect.Bring serious potential safety hazard for follow-up coal mining.Again drill, not only increase cost, waste time, nor can solve the hole problem of collapsing.
The utility model content
The purpose of this utility model provides that a kind of drilling rod intensity is high, and deslagging is suitable, can reserve the recessed spiral round drill rod of the integral type of drawing-off gas pipe in gas extraction hole.
For achieving the above object, the technical solution adopted in the utility model is: a kind of recessed spiral round drill rod, comprise the drilling rod body, the outer circle wall of the described drilling rod body helical groove of having got on the bus, the centre bore of the bolt connector on the described drilling rod body, nut connector and the body of rod is isometrical.
Because adopt technique scheme, the beneficial effects of the utility model are:
Adopt the screw thread on the body of rod and the body of rod outer wall to be the integral type structure, this structure is directly at the periphery of the body of rod helical groove of getting on the bus out, the technique of flight does not appear welding in the process of integral type drilling rod like this, avoiding appearance welding flight in use to snap comes off, the phenomenon of body of rod distortion, the straightness accuracy of drilling rod is good, and outward appearance is even, attractive in appearance, greatly improves the deslagging effect.Simultaneously, the internal diameter of drilling rod is consistent, can after the gas hole breaks into, insert pre-buried drawing-off gas pipe in the centre bore of drilling rod.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description.And to a certain extent, based on to investigating hereinafter, will be apparent to those skilled in the art, perhaps can from practice of the present utility model, be instructed.Target of the present utility model and other advantages can be passed through following manual, claims, and the specifically noted structure realizes and obtains in the accompanying drawing.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Description of drawings
Accompanying drawing is the utility model master cross-sectional schematic
Mark among the figure: 1-bolt connector 2-drilling rod body 3-body of rod 4-helical groove 5-nut connector
The specific embodiment
As shown in drawings, a kind of recessed spiral round drill rod comprises drilling rod body 2, the outer circle wall of described drilling rod body 2 helical groove 4 of having got on the bus, and the centre bore of the bolt connector 1 on the described drilling rod body 2, nut connector 5 and the body of rod 3 is isometrical.
Add man-hour, can adopt the round steel pipe of heavy wall, first process respectively bolt connector 1, nut connector 5 at the two ends of steel pipe, again at the outer circle wall of the body of rod helical groove 4 of getting on the bus out, also can be with after bolt connector 1, nut connector 5 be welded as a whole with the body of rod 3 after the processing, at the drilling rod outer circle wall helical groove 4 of getting on the bus out, this structure has improved the bulk strength of drilling rod greatly again, avoids or has reduced the drawback of bringing because of welding flight technique.
Drilling rod internal diameter after the connection is identical, can after the gas hole breaks into, insert pre-buried drawing-off gas pipe in the centre bore of drilling rod.Pre-buried drawing-off gas pipe is stayed in the gas extraction hole, and the hole phenomenon no matter whether collapse in the coal seam does not affect the discharging of gas.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, other modifications that those of ordinary skills make the technical solution of the utility model or be equal to replacement, only otherwise break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of the claim scope of the present utility model.
Claims (1)
1. recessed spiral round drill rod, comprise drilling rod body (2), it is characterized in that: the outer circle wall of described drilling rod body (2) helical groove (4) of having got on the bus, the centre bore of the bolt connector (1) on the described drilling rod body (2), nut connector (5) and the body of rod (3) is isometrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220378499 CN202689971U (en) | 2012-07-26 | 2012-07-26 | Concave screw type circular drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220378499 CN202689971U (en) | 2012-07-26 | 2012-07-26 | Concave screw type circular drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202689971U true CN202689971U (en) | 2013-01-23 |
Family
ID=47545601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220378499 Expired - Lifetime CN202689971U (en) | 2012-07-26 | 2012-07-26 | Concave screw type circular drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202689971U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014272A (en) * | 2016-07-13 | 2016-10-12 | 江阴德玛斯特钻具有限公司 | High-hardness drill stem with wear-resistant belts |
-
2012
- 2012-07-26 CN CN 201220378499 patent/CN202689971U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014272A (en) * | 2016-07-13 | 2016-10-12 | 江阴德玛斯特钻具有限公司 | High-hardness drill stem with wear-resistant belts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HENAN LONGTENG NEW DRILL MANUFACTURING CO.,LTD. Assignor: Tian Jianwei Contract record no.: 2013410000031 Denomination of utility model: Concave screw type circular drill rod Granted publication date: 20130123 License type: Exclusive License Record date: 20130407 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |