CN202370440U - Circular arc-shaped prismatic drill rod for pumping gas from coal bed - Google Patents
Circular arc-shaped prismatic drill rod for pumping gas from coal bed Download PDFInfo
- Publication number
- CN202370440U CN202370440U CN2011204871022U CN201120487102U CN202370440U CN 202370440 U CN202370440 U CN 202370440U CN 2011204871022 U CN2011204871022 U CN 2011204871022U CN 201120487102 U CN201120487102 U CN 201120487102U CN 202370440 U CN202370440 U CN 202370440U
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- drill rod
- circular arc
- main body
- drilling rod
- drill
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Abstract
The utility model relates to a circular arc-shaped prismatic drill rod for pumping gas from a coal bed. The circular arc-shaped prismatic drill rod comprises a male buckle (1), a drill rod main body (2) and a female buckle (3), wherein the drill rod main body (2) is arranged between the male buckle (1) and the female buckle (3), the three parts are independently processed, and the male buckle (1) and the female buckle (3) are conventional cylindrical drill rods. The circular arc-shaped prismatic drill rod is characterized in that the two ends of the drill rod main body (2) are in friction welding with the male buckle (1) and the female buckle (3). The circular arc-shaped prismatic drill rod solves the difficult problem that the ordinary triangular drill rod needs to be connected through electric welding, the outer diameter of drill rod screw threads is increased, the intensity of the screw threads is greatly improved, the processing and manufacture work load is reduced, the production cost is reduced, and the production period is shortened. When the drill rod is used for drilling the holes, the slag discharge quantity is small, the hole forming rate is high, the hole forming linearity is good, the drill clamping and the drill holding cannot easily occur, the mechanical drill rod mounting and dismounting can be completely realized, and the work intensity of workers is reduced.
Description
Technical field
The utility model belongs to gas boring construction installation in the coal seam, especially about the triangular drilling rod of a kind of coal-bed gas extraction with circular arc type.
Background technology
At present; Mostly conventional drill is conventional column type drilling rod and conventional screw type drilling rod, and the gap of conventional column type drilling rod in the process of drilling and between the drill hole wall is very little, and air exhaust passage is not smooth; Row's powder ability; The drawing-off gas resistance is big, and the high pressure gas stream that forms between drilling rod and hole wall carrying coal dust fast causes the gap to stop up, and finally causes the drilling rod folder dead.Conventional screw type drilling rod relies on the spiral propelling of rig thrust in drilling process, bed drain purge is more than 5 times of conventional coal hole; But wall stability is poor, and after the trip-out, the coal hole is prone to cave in; Become porosity not high, pore-forming is linear poor, in addition; Auger stem must utilize conventional column type drilling rod as kelly in the process of drilling, and relies on artificial loading and unloading, complex procedures and inefficiency.
In recent years, the common triangular form drilling rod that some mines uses as: patent No. ZL200820139772.3) solved some drawbacks of conventional drill to a certain extent, but still there is bigger defective in this patent itself.Common triangular form drilling rod screw thread part still adopts electric welding processing, and manufacturing process is complicated, inefficiency; And the restricted diameter of pin thread part causes screw thread intensity relatively poor, and the phenomenon of pin thread fracture very easily takes place in the process of drilling; Form and fall to bore, the salvaging difficulty is very big after falling to bore, even causes useless hole; Have a strong impact on programming, also brought great economic loss.
The utility model content
To this type of situation; The purpose of the utility model is to provide a kind of coal seam gas pumping with the triangular drilling rod of circular arc type; Be that the cross section that between pin thread and box, is connected with drilling rod main body, drilling rod main body is the triangular shape of circular arc type; With pin thread and box joint form after treatment cylindric, be convenient to independent processing after conventional column type drilling rod formula joint carry out friction welding.
The technical scheme of the utility model realizes in the following manner: the coal seam gas pumping is with the triangular drilling rod of circular arc type; Comprise pin thread, drilling rod main body and box; The drilling rod main body is located between pin thread and the box; Three independent processing of part, pin thread and box are conventional column type drilling rods, it is characterized in that: two ends of described drilling rod main body and pin thread and box friction welding.
Described drilling rod main body shape change at length direction, two is cylindric, mid portion transition gradually is the triangular shape of circular arc type.
The beneficial effect of the utility model: solved the difficult problem that common triangular form drilling rod must rely on electric welding to connect; Increase the external diameter of drilling rod screw thread, the intensity of screw thread has been had great lifting, reduced the workload of processing and manufacturing; Reduce cost of production, shortened the production cycle.Bed drain purge is little during this drilling rod boring, becomes porosity high, and the good linearity of pore-forming is difficult for bit freezing, embraces and bore, and can realize the mechanized handling drilling rod fully, has reduced working strength of workers.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 box sectional view.
Fig. 3 pin thread sectional view.
Fig. 4 is the A-A sectional view of Fig. 1 drilling rod main body.
Fig. 5 is the left view of drilling rod main body.
The specific embodiment
Know by Fig. 1; The coal seam gas pumping of present embodiment is with the triangular drilling rod of circular arc type; Comprise pin thread 1, drilling rod main body 2 and box 3, drilling rod main body 2 is located between pin thread 1 and the box 3, three independent processing of part; Pin thread 1 is conventional column type drilling rods with box 3, and two ends of drilling rod main body 2 and pin thread and box junction are friction welding.
Being known by Fig. 2, is the sectional view of pin thread 1.Pin thread 1 is established the cylindrical pyramidal structure, and outer cone is provided with screw thread, the end-face friction welding of its end face 1-1 and drilling rod main body 2, and pin thread 1 is provided with endoporus.
Being known by Fig. 3, is the sectional view of box 3.Box 3 is a cylinder, and endoporus is provided with taper thread, the end-face friction welding of its end face 3-1 and drilling rod main body 2.
Being known by Fig. 4, is the A-A sectional view of Fig. 1 drilling rod main body.Drilling rod main body 2 is variable cross-section cylinders, and two cross section is cylindrical, and the cross section of mid portion is triangular shape.Its cross section pin thread and box joint through special process handle the back form cylindric, be convenient to independent processing after conventional column type drilling rod formula joint carry out friction welding.
Being known by Fig. 5, is the structural representation of drilling rod main body 2.Two ends of drilling rod main body 2 are connected with box 3 end face 3-1 with the end face 1-1 of pin thread 1 respectively, and two is cylindrical, distortion gradually alongst, and making mid portion is triangular shape.
Claims (2)
1. the coal seam gas pumping is with the triangular drilling rod of circular arc type; Comprise pin thread (1), drilling rod main body (2) and box (3); Drilling rod main body (2) is located between pin thread (1) and the box (3); Three independent processing of part, pin thread (1) and box (3) are conventional column type drilling rods, it is characterized in that: two ends of described drilling rod main body (2) and pin thread (1) and box (3) friction welding.
2. coal seam according to claim 1 gas pumping is characterized in that with the triangular drilling rod of circular arc type: the shape of described drilling rod main body (3) changes at length direction, and two is cylindric, and mid portion transition gradually is the triangular shape of circular arc type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204871022U CN202370440U (en) | 2011-11-25 | 2011-11-25 | Circular arc-shaped prismatic drill rod for pumping gas from coal bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204871022U CN202370440U (en) | 2011-11-25 | 2011-11-25 | Circular arc-shaped prismatic drill rod for pumping gas from coal bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370440U true CN202370440U (en) | 2012-08-08 |
Family
ID=46594147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204871022U Ceased CN202370440U (en) | 2011-11-25 | 2011-11-25 | Circular arc-shaped prismatic drill rod for pumping gas from coal bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370440U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143901A (en) * | 2013-04-03 | 2013-06-12 | 江苏拓海煤矿钻探机械有限公司 | Welding method of high-strength prism drill rod for gas drainage from coal bed |
| CN103953291A (en) * | 2014-05-12 | 2014-07-30 | 淮北恒远工程建材设备有限责任公司 | Triangular arc-shaped ribbed friction-welded drill rod and welding method thereof |
-
2011
- 2011-11-25 CN CN2011204871022U patent/CN202370440U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143901A (en) * | 2013-04-03 | 2013-06-12 | 江苏拓海煤矿钻探机械有限公司 | Welding method of high-strength prism drill rod for gas drainage from coal bed |
| CN103953291A (en) * | 2014-05-12 | 2014-07-30 | 淮北恒远工程建材设备有限责任公司 | Triangular arc-shaped ribbed friction-welded drill rod and welding method thereof |
| CN103953291B (en) * | 2014-05-12 | 2016-09-14 | 淮北恒远工程建材设备有限责任公司 | A kind of Rhizoma Sparganii circular arc fin friction welding type drilling rod and welding method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20130515 Decision number of declaring invalidation: 20635 Granted publication date: 20120808 |