CN215672047U - Drilling internal lowering casing device based on aerodynamic force - Google Patents
Drilling internal lowering casing device based on aerodynamic force Download PDFInfo
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- CN215672047U CN215672047U CN202121964041.4U CN202121964041U CN215672047U CN 215672047 U CN215672047 U CN 215672047U CN 202121964041 U CN202121964041 U CN 202121964041U CN 215672047 U CN215672047 U CN 215672047U
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- drill bit
- casing
- pneumatic rotary
- rotary propelling
- connecting screw
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Abstract
The utility model discloses an aerodynamic-based casing pipe lowering device in a drill hole, which comprises a pneumatic rotary propelling drill bit, wherein the pneumatic rotary propelling drill bit is of a hollow structure, exhaust holes are formed in the outer wall of the pneumatic rotary propelling drill bit and are distributed at equal intervals, a connecting screw rod is inserted into the inner wall of the bottom of the pneumatic rotary propelling drill bit, a fixing nut is screwed at one end, located inside the pneumatic rotary propelling drill bit, of the connecting screw rod, the top of the fixing nut is welded with fixing support rods distributed at equal intervals, and the tops of the fixing support rods are hinged with anchoring blades. According to the utility model, the pneumatic rotary propelling drill bit is used, and the pneumatic power in the mine high-pressure air pipe is utilized to realize that the pneumatic rotary propelling drill bit drives the casing to automatically move forwards in the hollow drill rod, and the front section of the pneumatic rotary propelling drill bit triggers the connecting rod to impact with the inner wall of the front end of the drill hole, so that the anchoring blade is rotated and popped out, the automatic anchoring of the casing after the casing reaches the bottom end of the drill hole is realized, and the automatic casing lowering in the drill rod is realized.
Description
Technical Field
The utility model relates to the technical field of coal mining, in particular to an aerodynamic-based device for lowering a casing in a drill hole.
Background
High gas, coal and gas outburst coal mines usually need to be drilled for coal seam gas drainage in order to solve the gas problem, and because the coal seam is soft and broken, the hole is easy to collapse and block after the drilling construction is completed to influence the gas extraction effect, so a casing pipe is usually required to be placed in the drilled hole to play the roles of supporting the coal rock mass around the drilled hole and ensuring the extraction effect.
The other method is that a special drill bit is adopted, after the drilling construction is finished, the sleeve is pushed and placed through the hollow drill rod, when the sleeve is pushed and placed to the position of the drill bit, an internal mechanism of the drill bit is triggered, the top end of the drill bit is opened, an anchoring device at the front section of the sleeve is automatically opened, the sleeve is anchored to the surrounding coal body, and then the drill rod is withdrawn. When the length of the drill hole is large, the drill hole can be bent, and the manual pushing and releasing resistance is increased by adopting the method, so that the anchoring device cannot be released in place, and the sleeve fails to be released.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides an aerodynamic-based casing lowering device in a borehole.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a transfer sleeve pipe device in drilling based on aerodynamic, includes the pneumatic rotatory drill bit that impels, the pneumatic rotatory drill bit that impels is hollow structure, it has the exhaust hole that the equidistance distributes to open on the outer wall of pneumatic rotatory drill bit that impels, it has connecting screw to peg graft on the bottom inner wall of pneumatic rotatory drill bit, and connecting screw is located the inside one end spiro union of pneumatic rotatory drill bit and has fixation nut, fixation nut's top welding has the fixed support pole that the equidistance distributes, and fixation support pole's top all articulates there is the anchoring blade, the welding of connecting screw top has the spring of Y shape structure, and the top both ends of spring are connected with the top of two anchoring blades respectively, pneumatic rotatory drill bit top that impels has the trigger connecting rod along vertical direction sliding connection, and triggers the connecting rod overlap joint in the spring top of Y shape structure.
Preferably, the outer wall of the connecting screw rod is sleeved with a sealing bearing, and the sealing bearing is installed on the inner wall of the bottom of the pneumatic rotary propelling drill bit.
Preferably, one end of the connecting screw rod, which is positioned outside the pneumatic rotary propelling drill bit, is sleeved with the connecting rod supporting plate, the bottom of the connecting screw rod is screwed with the casing connecting nut, and the bottom of the casing connecting nut is connected with the casing.
Preferably, the exhaust hole is formed from the front end to the tail end of the pneumatic rotary propelling drill bit, and the exhaust hole is of a streamline structure.
Preferably, the sleeve is connected with a high-pressure air pipe through a connecting nut, and the high-pressure air pipe is provided with a control valve.
Preferably, the number of the anchor blades is the same as that of the exhaust holes, and the positions of the anchor blades and the positions of the exhaust holes correspond to each other.
The utility model has the beneficial effects that:
according to the pneumatic rotary propelling drill bit, the pneumatic rotary propelling drill bit is used for driving the casing to automatically move forwards in the hollow drill rod by utilizing the compressed air power in the high-pressure air pipe of the mine, the front section of the pneumatic rotary propelling drill bit triggers the connecting rod to impact with the inner wall of the front end of the drill hole, the anchoring blade is rotated and ejected out, the casing is automatically anchored after reaching the bottom end of the drill hole, and the casing is automatically placed in the drill rod.
Drawings
FIG. 1 is a schematic cross-sectional view of a pneumatic rotary propelling drill bit of an aerodynamic-based casing lowering device in a borehole according to the present invention;
FIG. 2 is a schematic external view of an aerodynamic-based casing lowering device in a borehole according to the present invention;
fig. 3 is a structural schematic diagram of a using state of the device for lowering the casing in the borehole based on the aerodynamic force.
In the figure: 1. a hollow drill bit; 2. a hollow drill rod; 3. pneumatically rotating the pusher bit; 4. a sleeve; 5. a connecting nut; 6. a high pressure air duct; 7. a control valve; 8. an exhaust hole; 9. fixing a nut; 10. sealing the bearing; 11. a connecting rod supporting plate; 12. the sleeve is connected with the nut; 13. a trigger link; 14. anchoring the blade; 15. fixing the support rod; 16. a spring; 17. and connecting the screw rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, the device for lowering the casing in the drilled hole based on aerodynamic force comprises a pneumatic rotary propelling drill bit 3, wherein the pneumatic rotary propelling drill bit 3 is of a hollow structure, exhaust holes 8 are formed in the outer wall of the pneumatic rotary propelling drill bit 3 and distributed equidistantly, a connecting screw 17 is inserted into the inner wall of the bottom of the pneumatic rotary propelling drill bit 3, a fixing nut 9 is screwed into one end, located inside the pneumatic rotary propelling drill bit 3, of the connecting screw 17, a sealing bearing 10 is sleeved on the outer wall of the connecting screw 17, and the sealing bearing 10 is installed on the inner wall of the bottom of the pneumatic rotary propelling drill bit 3.
Connecting screw 17 is located the outside one end of pneumatic rotatory propulsion drill bit 3 and has cup jointed connecting rod layer board 11, and connecting screw 17 bottom spiro union has bushing nut 12, and bushing nut 12 bottom is connected with sleeve pipe 4, and exhaust hole 8 is offered to the end by the pneumatic rotatory propulsion drill bit 3 front end, and exhaust hole 8 is the streamlined structure, sleeve pipe 4 is connected with high-pressurepipe 6 through coupling nut 5, and installs control flap 7 on the high-pressurepipe 6.
The welding of fixation nut 9's top has the fixed support pole 15 that the equidistance distributes, and the top of fixed support pole 15 all articulates there is anchoring blade 14, the welding of connecting screw 17 top has the spring 16 of Y-shaped structure, and the top both ends of spring 16 are connected with two anchoring blade 14's top respectively, pneumatic rotatory propelling drill 3 top has trigger connecting rod 13 along vertical direction sliding connection, and trigger connecting rod 13 overlap joint in the spring 16 top of Y-shaped structure, anchoring blade 14's quantity is the same with the quantity in exhaust hole 8, and anchoring blade 14's position and exhaust hole 8's position correspond each other, and anchoring blade 14 can pop out the exhaust hole, and anchoring blade 14 is articulated with bracing piece connecting rod 15, dead lever 15 and drill bit base fixed connection. The anchor blade 14 is connected to a spring 16 and its range of motion is limited by the trigger link 13.
The working principle is as follows: drilling holes at specified positions by using a hollow drill bit 1 and a hollow drill rod 2 with a hollow structure, and after the hollow drill bit 1 is constructed in place, the hollow drill rod 2 is withdrawn by about 10 cm, the pneumatic rotary propelling drill bit 3 is tightly connected with the casing 4 through a fixing nut 12, then the propelling drill bit 3 is put into the hollow drill rod 2, the other side of the sleeve 4 is connected with the mine high-pressure air pipe 6, the control valve 7 is opened, the pneumatic rotary propelling drill bit 3 can exhaust backwards through the exhaust hole 8 to generate a forward reverse thrust acting force to drive the pneumatic rotary propelling drill bit 3 to move forwards and drive the sleeve 4 to move forwards along the hollow drill rod 2, when the pneumatic rotary propelling drill bit 3 reaches the bottom of the drilled hole, the surrounding rock of the drilled hole presses down the trigger connecting rod 13, and the anchoring blade 14 is ejected out through the exhaust hole 8 under the action of the spring 16 and anchored on the coal rock mass around the drilled hole.
The length is transferred to sleeve pipe 4 and is reached drilling depth, when no longer advancing, disconnection high-pressure air pipe 6 withdraws from cavity drill bit 1 and cavity drilling rod 2, and the work of transferring the sleeve pipe in the drilling can be accomplished. The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The drilling internal lowering casing device based on aerodynamic force comprises a pneumatic rotary propelling drill bit (3) and is characterized in that the pneumatic rotary propelling drill bit (3) is of a hollow structure, exhaust holes (8) distributed equidistantly are formed in the outer wall of the pneumatic rotary propelling drill bit (3), a connecting screw (17) is inserted into the inner wall of the bottom of the pneumatic rotary propelling drill bit (3), a fixing nut (9) is screwed at one end, located inside the pneumatic rotary propelling drill bit (3), of the connecting screw (17), fixing support rods (15) distributed equidistantly are welded at the top of the fixing nut (9), anchoring blades (14) are hinged to the tops of the fixing support rods (15), a spring (16) of a Y-shaped structure is welded at the top of the connecting screw (17), and two ends of the top of the spring (16) are respectively connected with the tops of the two anchoring blades (14), the top of the pneumatic rotary propelling drill bit (3) is connected with a trigger connecting rod (13) in a sliding mode in the vertical direction, and the trigger connecting rod (13) is lapped on the top of a spring (16) of a Y-shaped structure.
2. The device for lowering the casing in the drill hole based on the aerodynamic force is characterized in that a sealing bearing (10) is sleeved on the outer wall of the connecting screw rod (17), and the sealing bearing (10) is installed on the inner wall of the bottom of the pneumatic rotary propelling drill bit (3).
3. The device for lowering the casing in the drilled hole based on the aerodynamic force according to the claim 1, wherein one end, located outside the pneumatic rotary propelling drill bit (3), of the connecting screw (17) is sleeved with a connecting rod supporting plate (11), the bottom of the connecting screw (17) is in threaded connection with a casing connecting nut (12), and the bottom of the casing connecting nut (12) is connected with the casing (4).
4. The device for lowering the casing in the drill hole based on the aerodynamic force is characterized in that the exhaust hole (8) is formed from the front end to the tail end of the pneumatic rotary propelling drill bit (3), and the exhaust hole (8) is of a streamline structure.
5. The device for lowering the casing in the drill hole based on the aerodynamic force is characterized in that the casing (4) is connected with a high-pressure air pipe (6) through a connecting nut (5), and a control valve (7) is installed on the high-pressure air pipe (6).
6. An aerodynamic based borehole casing device according to claim 1, characterized in that the number of anchor blades (14) is the same as the number of exhaust holes (8) and the positions of anchor blades (14) and exhaust holes (8) correspond to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121964041.4U CN215672047U (en) | 2021-08-20 | 2021-08-20 | Drilling internal lowering casing device based on aerodynamic force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121964041.4U CN215672047U (en) | 2021-08-20 | 2021-08-20 | Drilling internal lowering casing device based on aerodynamic force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672047U true CN215672047U (en) | 2022-01-28 |
Family
ID=79954217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121964041.4U Active CN215672047U (en) | 2021-08-20 | 2021-08-20 | Drilling internal lowering casing device based on aerodynamic force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215672047U (en) |
-
2021
- 2021-08-20 CN CN202121964041.4U patent/CN215672047U/en active Active
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