CN202745721U - Gas drainage drill rod - Google Patents
Gas drainage drill rod Download PDFInfo
- Publication number
- CN202745721U CN202745721U CN 201220489691 CN201220489691U CN202745721U CN 202745721 U CN202745721 U CN 202745721U CN 201220489691 CN201220489691 CN 201220489691 CN 201220489691 U CN201220489691 U CN 201220489691U CN 202745721 U CN202745721 U CN 202745721U
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- CN
- China
- Prior art keywords
- rod body
- drill rod
- planes
- joint
- gas drainage
- 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 relates to a gas drainage drill rod. A drill rod body is formed by welding a rod body with a bolt joint and a nut joint; three planes are circumferentially and uniformly distributed on the drill rod body; the inner diameters of the vent holes of the bolt joint and the nut joint are less than the inner diameter of the rod body; and multiple spiral grooves are axially arranged on the arc surface between any two planes on the drill rod body. According to the utility model, three planes are circumferentially and uniformly distributed on the drill rod body which is formed by welding the bolt joint and nut joint with the rod body, wherein the inner diameters of the vent holes of the bolt joint and the nut joint are less than the inner diameter of the rod body, thus the strength of the bolt joint part can be improved, the overall strength of the gas drainage drill rod is greatly enhanced, the material cost is saved, and the carrying difficulty is reduced. Multiple spiral grooves are axially arranged on the arc surface between any two planes on the drill rod body, thus the drilling efficiency is effectively increased, and the slag discharge effect is improved.
Description
Technical field
The utility model relates to a kind of gas drainage drill stem.
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 all will use drilling rod in the gas drainage under suction process.Generally speaking, the prismatic drilling rod than round drill rod beat fast, beat directly, deslagging is good, as use light-wall pipe to be processed into the prismatic body of rod, and reprocess nut connector and screwed joint and the body of rod with regard to needs and weld, drilling rod in use ruptures in the welding position easily like this.As use special thick-walled pipe to be processed into one, and though can avoid welding procedure, increase the intensity of the body of rod, greatly increased material cost and carrying difficulty.As using slightly thick steel pipe to process, the intensity of its bolt connecting portion is just poor, how both to have saved cost, reduces the carrying difficulty, increases again lever strength, is a great problem of present gas drainage drill stem.
For increasing the intensity of bolt connecting portion, the prismatic drilling rod that the connecting portion of drilling rod is processed into cylinder-shaped joint is also arranged in the industry, like this, although the intensity of bolt connecting portion has improved, owing to stopping of cylindrical connecting portion, cause deslagging not smooth,
Summary of the invention
The purpose of this utility model provides and a kind ofly both can increase body of rod bulk strength, effectively reduces the bolt connecting portion and snaps the exercise probability, can increase again the gas drainage drill stem of deslagging effect.
For achieving the above object, the technical solution adopted in the utility model is: a kind of gas drainage drill stem, comprise the drilling rod body, described drilling rod body is welded by the body of rod and screwed joint, nut connector, be processed with circumferentially equally distributed 3 planes on the drilling rod body, the internal diameter of the gravity vent of described screwed joint and nut connector is less than the internal diameter of the body of rod.
Above-mentioned gas drainage drill stem, axial car has a plurality of helical grooves on the arc surface on the described drilling rod body between any 2 planes.
Because adopt technique scheme, the beneficial effects of the utility model are:
By being processed with circumferentially equally distributed 3 planes on the drilling rod body of gravity vent internal diameter after less than body of rod internal diameter screwed joint, nut connector and body of rod welding.Not only can increase the intensity of bolt connecting portion, greatly increase the bulk strength of gas drainage drill stem, and save material cost, reduce the carrying difficulty.Axial car has a plurality of helical grooves on the arc surface on the drilling rod body between any 2 planes.Effectively increase drilling efficiency, improved the deslagging effect.
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, obtain instruction.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
Fig. 1 is that the utility model master looks schematic diagram
Fig. 2 is that A among Fig. 1 is to cross-sectional schematic
Mark among the figure: 1-screwed joint 2-drilling rod body 3-body of rod 4-helical groove 5-gravity vent 6-nut connector
The specific embodiment
As shown in Figure 1 and Figure 2, a kind of gas drainage drill stem, comprise drilling rod body 2, described drilling rod body 2 is welded by the body of rod 3 and screwed joint 1, nut connector 6, be processed with circumferentially equally distributed 3 planes on the drilling rod body 2, the internal diameter of the gravity vent 5 of described screwed joint 1 and nut connector 6 is less than the internal diameter of the body of rod 3.
Axial car has a plurality of helical grooves 4 on the arc surface on the drilling rod body 2 between any 2 planes.
Add man-hour, first cylindrical bolt joint 1 and nut connector 6 and the thick walled steel tube shape body of rod 3 are welded, the drilling rod body 2 after welding mills out 3 circumferential equally distributed planes, again the helical groove 4 of getting on the bus out of the arc surface between any 2 planes.
Because the internal diameter of the gravity vent 5 of screwed joint 1 and nut connector 6 is less, the wall thickness of screwed joint 1 and nut connector 6, the intensity of drilling rod connecting portion is just strengthened greatly, avoids the connecting portion fracture.Drilling rod bulk strength after the connection strengthens.
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 (2)
1. gas drainage drill stem, comprise drilling rod body (2), it is characterized in that: described drilling rod body (2) is welded by the body of rod (3) and screwed joint (1), nut connector (6), be processed with circumferentially equally distributed 3 planes on the drilling rod body (2), the internal diameter of the gravity vent (5) of described screwed joint (1) and nut connector (6) is less than the internal diameter of the body of rod (3).
2. according to gas drainage drill stem claimed in claim 1, it is characterized in that: axial car has a plurality of helical grooves (4) on the arc surface between upper any 2 planes of described drilling rod body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220489691 CN202745721U (en) | 2012-09-13 | 2012-09-13 | Gas drainage drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220489691 CN202745721U (en) | 2012-09-13 | 2012-09-13 | Gas drainage drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202745721U true CN202745721U (en) | 2013-02-20 |
Family
ID=47705138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220489691 Expired - Fee Related CN202745721U (en) | 2012-09-13 | 2012-09-13 | Gas drainage drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202745721U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374641A (en) * | 2018-03-29 | 2018-08-07 | 钱煜坤 | For the anti-sticking short circuit drilling rod of guiding of medium-length hole drilling machine and for the drilling rod group of medium-length hole drilling machine |
-
2012
- 2012-09-13 CN CN 201220489691 patent/CN202745721U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374641A (en) * | 2018-03-29 | 2018-08-07 | 钱煜坤 | For the anti-sticking short circuit drilling rod of guiding of medium-length hole drilling machine and for the drilling rod group of medium-length hole drilling machine |
| CN108374641B (en) * | 2018-03-29 | 2020-07-07 | 钱煜坤 | Guiding anti-blocking short-circuit drill rod for medium-length hole drilling machine and drill rod group for medium-length hole drilling machine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20180913 |