CN215292334U - Drilling tool for coal mine gas extraction hole - Google Patents
Drilling tool for coal mine gas extraction hole Download PDFInfo
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- CN215292334U CN215292334U CN202120274534.9U CN202120274534U CN215292334U CN 215292334 U CN215292334 U CN 215292334U CN 202120274534 U CN202120274534 U CN 202120274534U CN 215292334 U CN215292334 U CN 215292334U
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- 238000005553 drilling Methods 0.000 title claims abstract description 57
- 238000000605 extraction Methods 0.000 title claims abstract description 23
- 239000003245 coal Substances 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
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Abstract
The utility model discloses a drilling tool for coal mine gas extraction drilling, which comprises a hollow drill rod and a drill bit, wherein a support mechanism while drilling is arranged in the hollow drill rod, and a directional drilling mechanism is arranged at the drill bit; the support mechanism while drilling comprises a first air cavity, a first piston body, a second piston body and a resistance ring which are sequentially arranged in a hollow drill rod along the drilling direction, wherein a spring is arranged between the first piston body and the second piston body, and a plurality of support members are arranged between the second piston body and the resistance ring; the directional drilling mechanism comprises a collimation detecting pipe, a groove is formed in the outer wall of one end of the collimation detecting pipe, a collimation detecting component is arranged at the other end of the collimation detecting pipe, a second air cavity and a third air cavity are arranged in the collimation detecting pipe, and a third piston body moving along with a drill bit is arranged between the second air cavity and the third air cavity. The utility model discloses simple structure, reasonable in design can realize colliery gas drainage drilling and creep into and prevent collapsing and strut in the collimation of in-process, excellent in use effect, convenient to popularize and use.
Description
Technical Field
The utility model belongs to the technical field of colliery gas drainage, concretely relates to colliery gas drainage hole is with creeping into drilling tool.
Background
Coal mine gas disasters are the first killers of coal mine safety production, and gas outburst accidents, gas explosion accidents, gas combustion accidents and gas suffocation accidents seriously threaten the life safety of coal mine workers and the property of coal mine enterprises. Meanwhile, coal mine gas is clean energy, and the harm can be changed into treasure through gas extraction.
At present, a drilling system for a coal mine gas extraction channel at home and abroad mainly has the following problems: (1) the directional drilling cannot be carried out, in China, coal seam gas extraction drill holes are designed to be arranged in straight holes, but the drill holes are deviated to a certain extent in actual construction, so that the coal seam drill holes cannot be uniformly arranged, even the intervals of some drill holes are too large, a blank zone for gas extraction is formed, the gas content in the blank zone cannot be reduced during the extraction, and the danger of gas outburst is eliminated; (2) the gas extraction channel cannot be supported in time in the whole drilling process, and the gas extraction channel is easy to collapse in the process of drilling the hole and retreating the rod, so that the gas extraction channel is blocked.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed against, provide a colliery gas drainage drilling tool for hole, its simple structure, reasonable in design realizes conveniently, can effectively use in colliery gas drainage hole creeps into, realizes the collimation drilling in gas drainage hole to and the gas drainage hole prevent collapsing strut, excellent in use effect, convenient to popularize and use.
In order to solve the technical problem, the utility model discloses a technical scheme is: a drilling tool for a coal mine gas extraction hole comprises a hollow drill rod and a drill bit, wherein a support mechanism while drilling is arranged in the hollow drill rod, and a directional drilling mechanism is arranged at the drill bit; the support mechanism while drilling comprises a first air cavity, a first piston body, a second piston body and a resistance ring which are sequentially arranged in a hollow drill rod along the drilling direction, the first air cavity is fixed at one end of the hollow drill rod, the resistance ring is fixed at the other end of the hollow drill rod, a spring is arranged between the first piston body and the second piston body, and a plurality of support members are arranged between the second piston body and the resistance ring; the directional drilling mechanism comprises a collimation detecting pipe, a groove is formed in the outer wall of one end of the collimation detecting pipe, the collimation detecting pipe can be connected with a resistance ring of the hollow drill rod in a clamping mode through the groove, a collimation detecting component is arranged at the other end of the collimation detecting pipe, a second air cavity and a third air cavity are arranged in the collimation detecting pipe, and a third piston body moving along with a drill bit is arranged between the second air cavity and the third air cavity.
The drilling tool for the coal mine gas extraction hole comprises a supporting component and a supporting component, wherein the supporting component comprises a plurality of fan-shaped supporting plates, the fan-shaped supporting plates form a circular ring, a plurality of through holes in the radian direction are formed in the fan-shaped supporting plates, and elastic steel sheets are arranged in the through holes.
According to the drilling tool for the coal mine gas extraction hole, the length range of the supporting member is 300-700 mm.
According to the drilling tool for the coal mine gas extraction hole, the end part of the resistance ring is arc-shaped.
The collimation detection component comprises a support ring connected to the inner wall of the collimation exploring tube, a plurality of support rods extending inwards are connected to the support ring, a fan-shaped ring is arranged at one end, far away from the support ring, of each support rod, and a pressure strain gauge is arranged on each fan-shaped ring.
The drilling tool for the coal mine gas extraction hole is characterized in that the supporting rod is an elastic supporting rod.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses simple structure, reasonable in design, it is convenient to realize.
2. The utility model relates to a strut mechanism while drilling creeps into the in-process at colliery gas drainage hole, and the component is strutted in the interval, struts the component and puts in the back and take place the footpath at the spring action of elastic steel sheet and become, carries out the interval to gas drainage hole and strut.
3. The utility model relates to a directional drilling mechanism takes out the hole drilling in-process at colliery gas, carries out the collimation through the collimation detection component on the collimation exploring tube to the drill bit direction of advancing and detects.
4. The utility model discloses can effectively use in colliery gas drainage hole creeps into, realize the collimation drilling in gas drainage hole to and the gas drainage hole prevent collapsing strut, excellent in use effect, convenient to popularize and use.
To sum up, the utility model discloses simple structure, reasonable in design realizes conveniently, can effectively use in colliery gas drainage hole creeps into, realizes that the collimation in gas drainage hole creeps into to and the gas drainage hole prevent collapsing strut, excellent in use effect, convenient to popularize and use.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the support member of the present invention;
fig. 3 is a schematic structural view of the collimation detecting member of the present invention.
Description of reference numerals:
1-hollow drill rod; 2, a drill bit; 3-a first air cavity;
4-a first piston body; 5-a second piston body; 6-a support member;
6-1-sector support plate; 6-3-elastic steel sheet; 7-resistance ring;
8, a spring; 11-a collimator probe; 12-a groove;
13-alignment detection means; 13-1-support ring; 13-2-support bar;
13-3-sector ring; 14-a second air cavity; 15-a third air cavity;
16 — a third piston body.
Detailed Description
As shown in fig. 1, the drilling tool for coal mine gas extraction holes of the utility model comprises a hollow drill rod 1 and a drill bit 2, wherein a support mechanism while drilling is arranged in the hollow drill rod 1, and a directional drilling mechanism is arranged at the drill bit 2; the support mechanism while drilling comprises a first air cavity 3, a first piston body 4, a second piston body 5 and a resistance ring 7 which are sequentially arranged in a hollow drill rod 1 along the drilling direction, wherein the first air cavity 3 is fixed at one end of the hollow drill rod 1, the resistance ring 7 is fixed at the other end of the hollow drill rod 1, a spring 8 is arranged between the first piston body 4 and the second piston body 5, and a plurality of support members 6 are arranged between the second piston body 5 and the resistance ring 7; the directional drilling mechanism comprises a collimation detecting pipe 11, a groove 12 is arranged on the outer wall of one end of the collimation detecting pipe 11, the collimation detecting pipe can be clamped with the resistance ring 7 of the hollow drill rod 1 through the groove 12, a collimation detecting component 13 is arranged at the other end of the collimation detecting pipe 11, a second air cavity 14 and a third air cavity 15 are arranged in the collimation detecting pipe 11, and a third piston body 16 moving along with the drill bit 2 is arranged between the second air cavity 14 and the third air cavity 15.
In specific implementation, a connecting rod at the drill bit 2 is a rigid rod, after the drill bit 2 drives the connecting rod to move forwards for a certain distance, the support mechanism works along with drilling and the directional drilling mechanism, and the support mechanism along with drilling puts in a support member 6; meanwhile, the collimation detecting tube 11 carries out primary collimation detection on the drilling direction of the drill bit 2, specifically, the collimation detecting tube 11 and the drill bit 2 are in relative displacement, and the deviation direction of the drill bit 2 is judged by detecting radial stress during relative displacement.
In this embodiment, as shown in fig. 2, the supporting member 6 includes a plurality of sector-shaped supporting plates 6-1, the sector-shaped supporting plates 6-1 form a circular ring, a plurality of through holes in the direction of radian are disposed in the sector-shaped supporting plates 6-1, and elastic steel sheets 6-3 are disposed in the through holes.
When the method is concretely implemented, the elastic steel sheet 6-3 penetrates through the through holes in the fan-shaped support plates 6-1 to enable the fan-shaped support plates 6-1 to form a circular ring; meanwhile, the diameter of the ring can be changed by the self elasticity of the elastic steel sheet 6-3.
In this embodiment, the length of the supporting member 6 is 300mm to 700 mm.
In this embodiment, the end of the resistance ring 7 is arc-shaped.
In this embodiment, as shown in fig. 3, the collimation detection member 13 includes a support ring 13-1 connected to the inner wall of the collimation probe 11, a plurality of support rods 13-2 extending inward are connected to the support ring 13-1, a fan-shaped ring 13-3 is disposed at one end of each support rod 13-2 far from the support ring 13-1, and a pressure strain gauge is disposed on the fan-shaped ring 13-3.
During specific implementation, in the relative movement process of the collimation detecting tube 11 and the drill bit 2, the stress in each direction is detected through the pressure strain gauge on the collimation detecting component 13, and then the deviation direction of the drill bit 2 is analyzed.
In this embodiment, the supporting rod 13-2 is an elastic supporting rod.
When the device is specifically implemented, the elastic supporting rod plays a role in buffering.
The utility model discloses during the use, in the drilling of colliery gas drainage hole to it is preceding to creep into the direction, and 2 connecting rods of drill bit adopt the rigidity pole, through resistance ring 7 and recess 12 joints, make hollow drilling rod 1 and collimation visit the pipe 11 and link together.
The drill bit 2 drives the connecting rod to move forwards for a certain distance, the drill bit supports the mechanism to work while drilling, the first air cavity 3 is inflated to push the first piston body 4 to move forwards, the second piston body 5 is pushed to move forwards after being buffered by the spring 8, the supporting member 6 is further pushed to move forwards, the outer wall of the supporting member 6 at the foremost end is contacted with the resistance ring 7, the supporting member 6 is pressed to compress the elastic steel sheet 6-3, the outer diameter of the supporting member 6 is reduced, and the supporting member 6 is put in through the resistance ring 7; after the supporting member 6 is put in, the elastic steel sheet 6-3 releases elastic potential energy, the outer diameter of a circular ring formed by the fan-shaped supporting plates 6-1 is enlarged, and supporting of the gas extraction hole is achieved.
Meanwhile, the directional drilling mechanism works, the third air cavity 15 is filled with air, the groove 12 is pushed to be separated from the resistance ring 7, the alignment probe tube 11 moves forwards, the alignment probe tube 11 and the drill bit 2 are in relative displacement, the radial stress generated when the relative displacement is detected through the alignment detection component 13 is used for judging the offset direction of the drill bit 2, and then the direction adjustment of the drill bit 2 is guided, and the directional drilling is realized.
Then, the second air cavity 14 is inflated to push the groove 12 to move towards the resistance ring 7, and the clamping connection between the resistance ring 7 and the groove 12 is restored, so that the hollow drill rod 1 and the alignment probe 11 are connected together again.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (6)
1. The utility model provides a colliery gas drainage drilling tool for hole, includes hollow drill rod (1) and drill bit (2), its characterized in that: a support mechanism while drilling is arranged in the hollow drill rod (1), and a directional drilling mechanism is arranged at the drill bit (2);
the support mechanism while drilling comprises a first air cavity (3), a first piston body (4), a second piston body (5) and a resistance ring (7) which are sequentially arranged in a hollow drill rod (1) along the drilling direction, wherein the first air cavity (3) is fixed at one end of the hollow drill rod (1), the resistance ring (7) is fixed at the other end of the hollow drill rod (1), a spring (8) is arranged between the first piston body (4) and the second piston body (5), and a plurality of support members (6) are arranged between the second piston body (5) and the resistance ring (7);
the directional drilling mechanism comprises a collimation detecting pipe (11), a groove (12) is formed in the outer wall of one end of the collimation detecting pipe (11), the collimation detecting pipe can be clamped with a resistance ring (7) of the hollow drill rod (1) through the groove (12), a collimation detecting component (13) is arranged at the other end of the collimation detecting pipe (11), a second air cavity (14) and a third air cavity (15) are arranged in the collimation detecting pipe (11), and a third piston body (16) moving along with the drill bit (2) is arranged between the second air cavity (14) and the third air cavity (15).
2. The drilling tool for the coal mine gas extraction hole according to claim 1, characterized in that: the supporting member (6) comprises a plurality of fan-shaped supporting plates (6-1), the fan-shaped supporting plates (6-1) form a circular ring, a plurality of through holes in the radian direction are formed in the fan-shaped supporting plates (6-1), and elastic steel sheets (6-3) are arranged in the through holes.
3. The drilling tool for the coal mine gas extraction hole according to claim 1, characterized in that: the length range of the supporting member (6) is 300-700 mm.
4. The drilling tool for the coal mine gas extraction hole according to claim 1, characterized in that: the end part of the resistance ring (7) is arc-shaped.
5. The drilling tool for the coal mine gas extraction hole according to claim 1, characterized in that: the collimation detection component (13) comprises a support ring (13-1) connected to the inner wall of the collimation probe (11), the support ring (13-1) is connected with a plurality of inwards extending support rods (13-2), one end, far away from the support ring (13-1), of each support rod (13-2) is provided with a fan-shaped ring (13-3), and the fan-shaped ring (13-3) is provided with a pressure strain gauge.
6. The drilling tool for the coal mine gas extraction hole according to claim 5, characterized in that: the supporting rod (13-2) is an elastic supporting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120274534.9U CN215292334U (en) | 2021-01-31 | 2021-01-31 | Drilling tool for coal mine gas extraction hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120274534.9U CN215292334U (en) | 2021-01-31 | 2021-01-31 | Drilling tool for coal mine gas extraction hole |
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| Publication Number | Publication Date |
|---|---|
| CN215292334U true CN215292334U (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120274534.9U Expired - Fee Related CN215292334U (en) | 2021-01-31 | 2021-01-31 | Drilling tool for coal mine gas extraction hole |
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| Country | Link |
|---|---|
| CN (1) | CN215292334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155983A (en) * | 2020-01-19 | 2020-05-15 | 湖南科技大学 | Hollow inclusion strain gauge mounting device and method |
-
2021
- 2021-01-31 CN CN202120274534.9U patent/CN215292334U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155983A (en) * | 2020-01-19 | 2020-05-15 | 湖南科技大学 | Hollow inclusion strain gauge mounting device and method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20211224 |