CN202370431U - Linear drilling device of mine gas drainage drill rod - Google Patents
Linear drilling device of mine gas drainage drill rod Download PDFInfo
- Publication number
- CN202370431U CN202370431U CN2011205013777U CN201120501377U CN202370431U CN 202370431 U CN202370431 U CN 202370431U CN 2011205013777 U CN2011205013777 U CN 2011205013777U CN 201120501377 U CN201120501377 U CN 201120501377U CN 202370431 U CN202370431 U CN 202370431U
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- drilling device
- cylinder
- drilling
- alloy steel
- alloy
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Abstract
The utility model discloses a linear drilling device of a mine gas drainage drill rod. The linear drilling device is characterized in that 4 to 8 pairs of alloy steel bars are uniformly welded on a cylinder at intervals in the longitudinal direction, the cylinder is provided with a center hole, the drill rod rotation direction is used as the forward direction, a plurality of alloy blocks are welded in front of each alloy steel bar in the longitudinal direction at intervals, the alloy blocks are required to be tightly pasted with the self corresponding alloy steel bars, two ends of the cylinder are respectively provided with internal screw threads and external screw threads matched with the drill rod, and the integral outer diameter of the drilling device is smaller than the diameter of a drill bit during hole drilling. The linear drilling device can effectively ensure the linear drilling of an ordinary drill machine during the long-distance drilling construction. The linear drilling device has the advantages that the structure is simple, the investment is low, the drilling effect is good, and actual production and application prove that the effect is very good.
Description
Technical field
The utility model relates to a kind of auxiliary accessories of rig.
Background technology
In highly gassy mine or gas emphasis district, generally adopt the boring extraction at present, reach the purpose of administering gas or utilizing gas.When construction drill, if construction length surpasses 100 meters, add the variation of lithology, boring always bends, and can not keep straight line to creep into, and has had a strong impact on the extraction effect.
CN201714317U (CN201020154740.8) provides a kind of down-the-hole drilling tool centralizer; Relate to the construction equipment that a kind of auxiliary down-hole percussion drill tool is set upright guiding, improved borehole throw; Form by centralizer main body and adjustment ring; The centralizer main body is installed between drilling rod and the drill bit, and the adjustment ring is installed on the drilling rod; The centralizer main body is provided with a plurality of supporters with the circumference of adjustment ring, and the deep trouth between the supporter forms channel of chip removal.Because adjustment ring is little with the contact area of drill hole wall, thus can only be applied in harder rock stratum, beat hidden hole drilling, and softer owing to the coal seam when in the coal seam, boring firedamp taking-out discharging drilling, be not enough to support the lateral force of boring, so do not have the effect of setting upright.
Therefore, at present for common rig, also there is not a kind of long device that creeps into apart from straight line that keeps.
Summary of the invention
Drilling rod straight line when the utility model provides a kind of ability to keep common rig to hole creeps into device, can be used for the mine gas drainage drilling construction.
The term explanation
Boring extraction: as the passage that draws out methane, draw out methane construction drill in coal seam or rock stratum.
The technical scheme of the utility model is following:
A kind of drilling rod straight line creeps into device; It is on a cylinder that has a centre bore, longitudinally evenly to weld 4-8 to the alloy steel bar at interval; With drilling rod precession direction is direction of advance, and a plurality of alloy blocks in the longitudinal separation welding before every alloy steel bar require alloy block to be close to and own corresponding alloy steel bar; The cylinder two ends are respectively equipped with internal thread and the external screw thread suitable with drilling rod, and the entire outer diameter of creeping into device is less than the diameter of drill bit when holing.
Preferred according to the utility model, high 50-70 centimetre of said cylinder scapus; Center-hole diameter is 1-2 centimetre,
2-4 centimetre of described alloy block length, wide 1-2 centimetre, thick 1-1.5 centimetre.
The utility model is used for the connection between drilling rod, and is big with the contact area of coal bed drilling wall because it is a cylindricality, can guarantee effectively that the straight line of common rig when the long distance of construction is holed creeps into.This apparatus structure is simple, small investment, and it is effective to drill, and uses proving effect very good through actual production.
Description of drawings
Fig. 1 is that the master that the utility model creeps into device looks sketch map;
Among the figure: 1-internal thread, the cylinder of 2-band centre bore, 3-alloy steel bar, 4-alloy block, 5-external screw thread.
The specific embodiment
Below in conjunction with embodiment the utility model is further specified.But be not limited thereto.
Drilling rod straight line as shown in Figure 1 creeps into device; It is on a cylinder 2 that has a centre bore, longitudinally evenly to weld 4-8 to alloy steel bar 3 at interval; With drilling rod precession direction is direction of advance, and a plurality of alloy blocks 4 in longitudinal separation welding before the every alloy steel bar 3 require alloy block 4 to be close to and own corresponding alloy steel bar 3; Cylinder 2 two ends are respectively equipped with and suitable internal thread of drilling rod 1 and external screw thread 5, the diameter of the entire outer diameter outline of creeping into device drill bit during less than boring.
The course of work and principle are following:
After creeping into a drilling rod, will creep into device and be contained between the 1st joint and the 2nd joint drilling rod, after creeping into two drilling rods, will creep into device and be contained between the 2nd joint and the 3rd joint drilling rod, continue to creep into by normal procedure afterwards.Because the alloy block that creeps on the device is evenly distributed for vertically, the radial load that drilling rod is received in drilling process is cancelled out each other, and it is indeformable greatly to creep into device hardness, thereby the straight line that has kept holing creeps into.
The utility model used the boring centralizer 6 months in the high-order drill sites of the 1703 eastern coal-faces in Dezhou City official Zhao colliery, Shandong Province, 48 of the rock pores of constructing altogether, and 200 meters of the length of on average constructing, 258 meters of the longest construction length, qualification rate reaches 91.7%.
Claims (3)
1. a mine gas drainage drilling rod straight line creeps into device; It is characterized in that it is on a cylinder that has a centre bore, longitudinally evenly to weld 4-8 to the alloy steel bar at interval, is direction of advance with drilling rod precession direction; A plurality of alloy blocks in the longitudinal separation welding before every alloy steel bar; Require alloy block to be close to and own corresponding alloy steel bar, the cylinder two ends are respectively equipped with internal thread and the external screw thread suitable with drilling rod, and the entire outer diameter of creeping into device is less than the diameter of drill bit when holing.
2. straight line as claimed in claim 1 creeps into device, it is characterized in that, high 50-70 centimetre of described cylinder scapus; Center-hole diameter is 1-2 centimetre.
3. according to claim 1 or claim 2 straight line creeps into device, it is characterized in that 2-4 centimetre of described alloy block length, wide 1-2 centimetre, thick 1-1.5 centimetre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205013777U CN202370431U (en) | 2011-12-05 | 2011-12-05 | Linear drilling device of mine gas drainage drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205013777U CN202370431U (en) | 2011-12-05 | 2011-12-05 | Linear drilling device of mine gas drainage drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370431U true CN202370431U (en) | 2012-08-08 |
Family
ID=46594138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205013777U Expired - Fee Related CN202370431U (en) | 2011-12-05 | 2011-12-05 | Linear drilling device of mine gas drainage drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370431U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418477A (en) * | 2011-12-05 | 2012-04-18 | 山东新矿赵官能源有限责任公司 | Drill rod linear driller for mine gas drainage under suction and operation method of drill rod linear driller |
-
2011
- 2011-12-05 CN CN2011205013777U patent/CN202370431U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418477A (en) * | 2011-12-05 | 2012-04-18 | 山东新矿赵官能源有限责任公司 | Drill rod linear driller for mine gas drainage under suction and operation method of drill rod linear driller |
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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 |
Granted publication date: 20120808 Termination date: 20141205 |
|
| EXPY | Termination of patent right or utility model |