CN207499819U - A kind of screw type drilling rod - Google Patents
A kind of screw type drilling rod Download PDFInfo
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- CN207499819U CN207499819U CN201720985491.9U CN201720985491U CN207499819U CN 207499819 U CN207499819 U CN 207499819U CN 201720985491 U CN201720985491 U CN 201720985491U CN 207499819 U CN207499819 U CN 207499819U
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- drill rod
- rod body
- screw
- thread
- helicoid
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Abstract
The utility model discloses a kind of screw type drilling rod, including drill rod body, the drill rod body is trigone screw rod, and the helicoid on the trigone screw rod is formed by the Surface Subsidence of trigone screw rod.The spiral shape forms multiple semicircular spiral spaces in drilling process between the helicoid and the wall of a borehole in drill rod body, in the case of the intensity for ensureing drill rod body, expand the channel for excluding dust and gas；Also, spiral helicoid and hole wall constitute an auger conveyor, cinder can be made more to be smoothly discharged, and bottom hole cinder is gradually conveyed backward until being easily discharged out of the hole by the helical duct in drill rod body；In addition, the fin of drill rod body is twist, in drilling process, hole wall can be preferably protected.
Description
Technical field
The utility model is related to a kind of screw type drilling rods.
Background technology
Drilling rod is underground drilling leting speeper hole, the common boring tool of gas extraction hole, therefore drilling rod is a kind of important
Mine tool.In existing drilling rod, more commonly used is conventional drill rod (i.e. polished rod) and welding structure soft rock drilling rod (i.e. spiral
Drilling rod).Wherein, the cooperation of conventional drill rod and compact bit can be used to the drilling in rock stratum leting speeper hole, it can also be used to coal seam or
Coal rock layer gas extraction hole is crept into；Soft rock drilling rod coordinates with alloy bit, is also used widely in colliery industry.
However, current conventional drill rod due to outer surface be it is round and smooth, it is small to coal dust disturbance in drilling, and cannot be by coal dust
The problems such as being effectively easily discharged out of the hole, being limited in soft projecting coal bed mash gas pumping drilling construction there are drilling depth；Auger stem
It is the screw thread fin by increasing outwardly convex on the surface of drilling rod, in drilling process, improves drilling ability and deslagging energy
Power, but drilling rod disturbs hole wall excessive, and spray orifice, collapse hole, the abnormal phenomenon such as bit freezing easily occur, cause Completion of Drilling Hole rate it is low,
Depth of pore forming is shallow, even occurs the drilling accidents such as drilling rod when serious.
Utility model content
The purpose of this utility model is to provide a kind of screw type drilling rod, can enhance coal dust disturbance effect and improve
Completion of Drilling Hole rate.
In order to solve the above technical problems, the utility model provides a kind of screw type drilling rod, the drill rod body is more rib spiral shells
Swing arm, the helicoid on more rib screw rods are formed by the Surface Subsidence of more rib screw rods；It is equipped in the drill rod body logical
Hole；The aperture of through-hole in the drill rod body is more than or equal to 55mm；The lead of screw of the helicoid is 650mm-800mm；
The both ends of the drill rod body are respectively equipped with a jointing for two drill rod bodies to be connected；The drilling rod bar
One end of body is equipped with pin end, and the other end is equipped with female connector；The pin end outer rim is equipped with external screw thread, and the female connector inner edge is set
There is internal thread, and the external screw thread and internal thread are trapezoidal thread；The external screw thread fits type cooperation with internal thread；The trapezoidal spiral shell
The thread form angle of line is 29 °~30 °, thread taper 1：8~1:30.
Further, the thread form angle of the trapezoidal thread is 29 °~30 °, thread taper 1：8~1:30.
The beneficial effects of the utility model are：
1st, the drilling rod forms multiple semicircular spiral shells in drilling process between the helicoid and the wall of a borehole in drill rod body
Space is revolved, in the case of the intensity for ensureing drill rod body, expands the channel for excluding dust and gas；It is also, spiral
Helicoid and hole wall constitute an auger conveyor, cinder can be made more to be smoothly discharged, and bottom hole cinder is by drill rod body
On helical duct gradually backward conveying until be easily discharged out of the hole；In addition, the fin of drill rod body is twist, in drilling process
In, it can preferably protect hole wall.
2nd, the drill rod body in the application is integrally formed, and drilling rod is preferably only by an integrally formed drill rod body structure
Into that is, by the way that traditional connector linking drilling rod is changed to integral drill rod, spiral is ensure that while drilling rod intensity is increased
The spiral continuity in face, makes slagging channel more smooth, further improves its deslagging effect.
3rd, by increasing the aperture of the through-hole in drill rod body, the construction of decentralization screen casing can be completed by large aperture through-hole
Technique solves the problems, such as the extraction hole plug caused by borehole collapse, improves gas drainage results.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, the part of the application is formed, at this
The same or similar part, the illustrative embodiments and their description of the application are represented using identical reference label in a little attached drawings
For explaining the application, the improper restriction to the application is not formed.In the accompanying drawings：
Fig. 1 is the structure diagram of the utility model one embodiment；
Fig. 2 is the A-A sectional views of Fig. 1；
Fig. 3 is the B-B sectional views of Fig. 1.
Wherein：1st, drill rod body；2nd, helicoid；3rd, pin end；4th, female connector.
Specific embodiment
The screw type drilling rod of weak seam as shown in Figure 1 to Figure 3, including drill rod body 1, the drill rod body 1 is more
Rib screw rod, the helicoid 2 on more rib screw rods are formed by the Surface Subsidence of more rib screw rods.
According to one embodiment of the application, the drill rod body 1 is trigone screw rod, the spiral shell on the trigone screw rod
Radial facing 2 is formed by the Surface Subsidence of trigone screw rod.I.e. as shown in figure 3, the cross-sectional circumference side shape of drill rod body 1 is by three sections
Isometric straightway and arc section are alternately formed by connecting, and the taper formed between the two neighboring helicoid 2 is 60 °.
This application by the helicoid of original trigone bar by being set as helical form so that the adjoining spiral face 2 of drill rod body 1
Between form circular arc shaped rib.In drilling process, several semicircles are formed between the helicoid 2 and the wall of a borehole in drill rod body 1
The spiral space of shape in the case of the intensity for ensureing drill rod body 1, expands the channel for excluding dust and gas；Also, spiral shell
The helicoid 2 and hole wall for revolving shape constitute an auger conveyor, cinder can be made more to be smoothly discharged, bottom hole cinder is drilled
Helical duct on club shaft 1 gradually conveys backward, until being easily discharged out of the hole；Further, since the fin in drill rod body 1 is helically
Shape, in drilling process, the stress suffered by drilling in same vertical direction is discontinuous to be interrupted, while drill rod body 1
Circular arc fin there is squeezing action to cinclides in drilling process, therefore can preferably protect hole wall, with prevent collapse hole,
The abnormal conditions such as bit freezing.
Particularly, the width b of the helicoid 2 of drill rod body 1 is determined according to the diameter and wall thickness of drill rod body 1, is being protected
It demonstrate,proves under the wall thickness kept needed for drilling rod working strength, the width b that should make helicoid 2 is as large as possible.
According to one embodiment of the application, drill rod body 1 is integrally formed, and drilling rod is only by an integrally formed brill
Club shaft 1 is formed.So as to which the application by traditional connector linking drilling rod by being changed to integral drill rod, and increasing, drilling rod is strong
It ensure that the spiral continuity of trigone helicoid while spending, make slagging channel more smooth, further improve its deslagging effect.
According to one embodiment of the application, the aperture of the through-hole in drill rod body 1 is more than or equal to 55mm.The application will pass
Through-hole aperture in the drill rod body 1 of system increases to more than 55mm so that it can complete the construction technology of decentralization screen casing, solves
The extraction hole plug problem caused by borehole collapse improves gas drainage results.
According to one embodiment of the application, the lead of screw of helicoid 2 is 650mm-800mm.Also, helicoid 2
Best lead of screw is 750mm, under such configuration can be in the transfer efficiency for ensureing cinder simultaneously, protection hole to the maximum extent
Wall prevents collapse hole phenomenon.
According to one embodiment of the application, which includes multiple drill rod bodies 1, and the one of each drill rod body 1
End is equipped with pin end 3, and the other end is equipped with female connector 4；The two neighboring drill rod body 1 passes through the pin end 3 and female connector 4
Head and the tail are formed by connecting.
According to one embodiment of the application, the drill rod body 1 and pin end 3 and female connector 4 by friction welding (FW) in succession
It connects, to ensure the intensity of drilling rod.
According to one embodiment of the application, the outer rim of the pin end 3 is equipped with external screw thread, the inner edge of the female connector 4
Equipped with internal thread；The external screw thread and internal thread are trapezoidal thread, and the thread form angle of the trapezoidal thread is 29 °~30 °, screw thread
Taper is 1：8~1：30；The external screw thread fits type cooperation with internal thread.Preferably, the thread form angle of the trapezoidal thread for 30 °,
Thread taper is 1：8 or trapezoidal thread thread form angle be 29 °, thread taper 1：30.
Selection trapezoidal thread connection structure is because its not only good seal performance, can also effectively reduce deslagging pressure medium
Linear loss improves the anti-fatigue ability of deslagging effect and drilling rod.It in addition, can also be to above-mentioned on pin end 3 and female connector 4
Two kinds of thread surfaces carry out antirust, Wear-resistant Treatments, to enhance anti-thread gluing and the performances such as wear-resisting.
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the right of the utility model.
Claims (2)
1. a kind of screw type drilling rod, including drill rod body, which is characterized in that the drill rod body is more rib screw rods, described more
Helicoid on rib screw rod is formed by the Surface Subsidence of more rib screw rods；Through-hole is equipped in the drill rod body；The drilling rod
The aperture of through-hole in the body of rod is more than or equal to 55mm；The lead of screw of the helicoid is 650mm-800mm；The drill rod body
Both ends be respectively equipped with one for the jointing that connects two drill rod bodies；One end of the drill rod body is equipped with
Pin end, the other end are equipped with female connector；The pin end outer rim is equipped with external screw thread, and the female connector inner edge is equipped with internal thread, and
The external screw thread and internal thread are trapezoidal thread；The external screw thread fits type cooperation with internal thread；The thread form angle of the trapezoidal thread
It is 29 °~30 °, thread taper 1：8~1:30.
2. screw type drilling rod according to claim 1, which is characterized in that the drill rod body is trigone screw rod, described
Helicoid on trigone screw rod is formed by the Surface Subsidence of trigone screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720985491.9U CN207499819U (en) | 2017-08-08 | 2017-08-08 | A kind of screw type drilling rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720985491.9U CN207499819U (en) | 2017-08-08 | 2017-08-08 | A kind of screw type drilling rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207499819U true CN207499819U (en) | 2018-06-15 |
Family
ID=62497680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720985491.9U Active CN207499819U (en) | 2017-08-08 | 2017-08-08 | A kind of screw type drilling rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207499819U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284844A (en) * | 2019-07-11 | 2019-09-27 | 中煤科工集团重庆研究院有限公司 | A kind of plough auger stem |
| CN112647866A (en) * | 2020-12-25 | 2021-04-13 | 江苏拓海煤矿钻探机械有限公司 | Quadrangular drill rod and machining method thereof |
-
2017
- 2017-08-08 CN CN201720985491.9U patent/CN207499819U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284844A (en) * | 2019-07-11 | 2019-09-27 | 中煤科工集团重庆研究院有限公司 | A kind of plough auger stem |
| CN112647866A (en) * | 2020-12-25 | 2021-04-13 | 江苏拓海煤矿钻探机械有限公司 | Quadrangular drill rod and machining method thereof |
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