CN216517857U - Connecting structure of deslagging drill bit for efficient construction of gas extraction drill hole of soft coal seam under coal mine - Google Patents
Connecting structure of deslagging drill bit for efficient construction of gas extraction drill hole of soft coal seam under coal mine Download PDFInfo
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- CN216517857U CN216517857U CN202123000702.4U CN202123000702U CN216517857U CN 216517857 U CN216517857 U CN 216517857U CN 202123000702 U CN202123000702 U CN 202123000702U CN 216517857 U CN216517857 U CN 216517857U
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Abstract
The utility model discloses a connecting structure of a slag discharge drill bit for efficient construction of gas extraction drilling of a soft coal seam in an underground coal mine, which comprises the following components: one end of the guide cylinder is fixedly connected with the side wall of the central hole; the connecting column is positioned inside the circular hole of the guide cylinder, the side surface of the guide cylinder and the inside of the sliding opening are fixedly connected with a limiting block, one end of the connecting column extends to the outside of the connecting body, the other end of the connecting column extends to the inside of the threaded cylinder, and the connecting column is in threaded fit with the threaded cylinder; the connector is arranged on the side face of the connector, a sliding hole is formed in the side face of the connector, the axial direction of the sliding hole is perpendicular to the axial direction of the threaded cylinder, and a transmission column is in interference fit with the inside of the sliding hole. The problem of prior art foreign matter get into in the connector through the gap easily and destroy the connection structure of connector and rig is solved.
Description
Technical Field
The utility model relates to the technical field of coal mining, in particular to a connecting structure of a deslagging drill bit for efficient construction of a gas extraction drill hole of a soft coal seam in a coal mine.
Background
Along with the increase of the coal mining depth, the coal seam is developed more and more completely, the soft coal seam is increased, the difficulty of gas control is more and more increased when the soft coal seam is mined, the existing gas control technology mainly adopts gas extraction, and the key of the gas extraction lies in whether a drill hole can be constructed in place. The slag discharge hole angle of the currently used underground gas extraction drill bit is small, and the phenomenon of blockage by coal slag easily occurs in the drilling construction process.
In order to solve the problem, the applicant develops a high-efficiency construction slag-removing drill bit for the gas extraction drill hole of the soft coal seam in the underground coal mine, the drill bit is detachably connected with a drilling machine through a connector, but the connector is detachably connected with the drilling machine and is easy to generate a gap, so that external substances enter the connector through the gap to damage a connecting structure of the connector and the drilling machine.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the utility model aims to provide a connecting structure of a deslagging drill bit for efficient construction of a gas extraction drill hole of a soft coal seam in an underground coal mine.
The technical scheme of the utility model is as follows: a colliery is soft coal seam gas drainage drilling high efficiency construction in pit and arranges sediment drill bit connection structure includes:
one end of each guide cylinder is fixedly connected with the side wall of the central hole, a round hole is formed in the end part of each guide cylinder and penetrates through the side walls of the guide cylinders and the connecting body, sliding openings are formed in the inner sides of the guide cylinders, two guide cylinders are arranged, the axes of the two guide cylinders are overlapped, a threaded cylinder is movably connected between the two guide cylinders, and an outer gear ring is arranged on the outer side of the threaded cylinder;
the connecting column is positioned inside the circular hole of the guide cylinder, the side surface of the guide cylinder and the inside of the sliding opening are fixedly connected with a limiting block, one end of the connecting column extends to the outside of the connecting body, the other end of the connecting column extends to the inside of the threaded cylinder, and the connecting column is in threaded fit with the threaded cylinder;
the connector, the connector sets up the side at the connector, and the slide opening has been seted up to the side of connector, the axial of slide opening is perpendicular with the axial of screw thread section of thick bamboo, the inside interference fit of slide opening has the transmission post, the one end of transmission post just is located the outside fixedly connected with apron of connector, the inside fixedly connected with drive rack that the other end of transmission post stretched into the centre bore, drive rack meshes with outer ring gear mutually, the inside wall of centre bore just is located the top fixedly connected with limiting plate of drive rack.
The utility model has the beneficial effects that: compared with the prior art, the connecting structure of the connecting seat and the connecting body is arranged, the connecting seat is fixedly connected with the drilling machine (can be manufactured integrally), the connecting port is inserted into the mounting port and is pushed outwards by the connecting column of the connecting structure to be connected with the circular groove on the inner side of the connecting seat, the connecting position is completely covered by the side edge of the mounting port, and the connecting structure is not easy to touch in the using process and is safer to use.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view of the point C in FIG. 3
FIG. 5 is a top view of the present invention;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;
FIG. 7 is a side view of the present invention;
FIG. 8 is a cross-sectional view of the connecting socket of the present invention;
FIG. 9 is a perspective view of the present invention;
wherein theta is an included angle between the first slag discharge hole and the vertical direction.
Illustration of the drawings:
1. a linker; 11. a connecting port; 2. a central bore; 3. a notch; 4. a first blade; 41. a rake face; 5. a first slag discharge hole; 6. a second blade; 61. crushing the slag surface; 7. a second slag discharge hole; 8. a guide cylinder; 81. a sliding port; 9. connecting columns; 91. a limiting block; 10. a threaded barrel; 101. an outer ring gear; 111. a drive rack; 112. a limiting plate; 113. a drive post; 114. a cover plate; 12. a connecting seat; 13. a U-shaped opening; 14. a step groove; 15. a vent hole; 16. a circular groove.
Detailed Description
The utility model will be further described with reference to the accompanying drawings and specific embodiments:
the reason that the connection structure of the connector and the drilling machine is easy to damage is that the connector and the drilling machine are detachably connected and gaps are easy to generate, and external substances easily enter the connector through the gaps to damage the connection structure of the connector and the drilling machine.
Example 1 was carried out: referring to fig. 1 to 5, a connection structure of a high-efficiency slag-removing drill bit for a gas extraction drill hole of a soft coal seam in an underground coal mine comprises: one end of the guide cylinder 8 is fixedly connected with the side wall of the central hole 2, a circular hole is formed in the end portion of the guide cylinder 8, the circular hole penetrates through the side walls of the guide cylinder 8 and the connecting body 1, a sliding opening 81 is formed in the inner side of the guide cylinder 8, two guide cylinders 8 are arranged, the axes of the two guide cylinders 8 are overlapped, a threaded cylinder 10 is movably connected between the two guide cylinders 8, and an outer gear ring 101 is arranged on the outer side of the threaded cylinder 10;
the connecting column 9 is positioned inside the circular hole of the guide cylinder 8, the side surface of the guide cylinder 8 and the inside of the sliding opening 81 are fixedly connected with a limiting block 91, one end of the connecting column 9 extends to the outside of the connector 1, the other end of the connecting column 9 extends to the inside of the threaded cylinder 10, and the connecting column 9 is in threaded fit with the threaded cylinder 10;
Example 2 was carried out: referring to fig. 1 to 5, a slag discharge drill bit for efficient construction of a gas extraction borehole of a soft coal seam in an underground coal mine comprises:
the connecting body 1 is detachably connected with a drilling machine;
the bottom of the connector 1 is provided with a central hole 2, the top of the connector 1 is provided with an expansion part, the side surface of the expansion part is provided with a notch 3, the side surface of the notch 3 is provided with a first slag discharge hole 5, the top of the connector 1 is provided with a second slag discharge hole 7, the first slag discharge hole 5 and the second slag discharge hole 7 are both communicated with the central hole 2, the included angle between the first slag discharge hole 5 and the vertical direction is 50-70 degrees, and the diameters of the first slag discharge hole 5 and the second slag discharge hole 7 are 12-18 mm;
the first blade 4 is fixedly connected to the top of the connecting body 1, and the first blade 4 is distributed along the side edge of the top of the connecting body 1;
and the second blade 6 is fixedly connected to the top of the connecting body 1, and the second blade 6 is positioned on the inner side of the first blade 4.
The number of the first blades 4 is multiple, the blades are arranged in an annular array, the number of the notches 3 is equal to that of the first blades 4, and the notches 3 are located between every two adjacent first blades 4;
connecting seat 12, connecting seat 12 fixed connection is in the bottom of drilling machine, the middle part of connecting seat 12 is provided with air vent 15, the installing port has been seted up at the top of connecting seat 12, step groove 14 has been seted up to the interior bottom of installing port, circular slot 16 has been seted up to the side of installing port, U type mouth 13 has still been seted up to the side of installing port, the side of connector 1 is provided with connector 11, the inside of connector 1 is provided with connection structure, when connector 11 injects the installing port inside, can lock with connection structure.
Specifically, the connection structure includes:
one end of the guide cylinder 8 is fixedly connected with the inner side wall of the central hole 2, a circular hole is formed in the end portion of the guide cylinder 8 and penetrates through the guide cylinder 8 and the side wall of the connecting body 1, a sliding opening 81 is formed in the inner side of the guide cylinder 8, two guide cylinders 8 are arranged, the axes of the two guide cylinders 8 are overlapped, a threaded cylinder 10 is movably connected between the two guide cylinders 8, and an outer gear ring 101 is arranged on the outer side of the threaded cylinder 10;
the connecting column 9 is positioned inside the circular hole of the guide cylinder 8, the side surface of the guide cylinder 8 and the inside of the sliding opening 81 are fixedly connected with a limiting block 91, one end of the connecting column 9 extends to the outside of the connector 1, the other end of the connecting column extends to the inside of the threaded cylinder 10, and the connecting column 9 is in threaded fit with the threaded cylinder 10;
the side of connector 11 has seted up the slide opening, the axial of slide opening is perpendicular with the axial of screw thread section of thick bamboo 10, the inside interference fit of slide opening has drive column 113, the outside fixedly connected with apron 114 of drive column 113's one end just is located connecting body 1, the inside fixedly connected with drive rack 111 that the other end of drive column 113 stretched into centre bore 2, drive rack 111 meshes with outer ring gear 101 mutually, the inside wall of centre bore 2 just is located the top fixedly connected with limiting plate 112 of drive rack 111.
The number of the notches 3 is equal to that of the first slag discharge holes 5.
The included angle between the first slag discharge hole 5 and the vertical direction is 60 degrees.
The diameters of the first slag discharge hole 5 and the second slag discharge hole 7 are 15 mm.
The first insert 4 has a rake face 41, and the rake face 41 is arranged along the radial direction of the connecting body 1.
The second blade 6 has a slag surface 61, and the slag surface 61 is arranged along the radial direction of the connecting body 1.
The working principle is as follows: when the device is used, the device is arranged on a drilling machine and drives the device to rotate, the first blade 4 and the second blade 6 at the bottom rotate to drill holes and crush slag, the first slag discharge hole 5 and the second slag discharge hole 7 are not easy to block, pressure relief can be well performed, and the situation that the water pressure at the position of a drill bit is increased to continuously wash the coal wall, so that hole collapse of the drill hole is caused, or the depth of the designed hole cannot be reached in drilling construction is avoided;
connecting seat 12 and drilling machine are as an organic whole manufacturing, when installing connector 1, at first inside inserting the interface 11 into the installing port, align apron 114 and U type mouth 113, the holding position is motionless, inwards strike apron 114, promote transmission post 113, transmission rack 111 moves inwards, through the meshing transmission between outer ring gear 101 and transmission rack 111, it rotates to drive threaded cylinder 10, make the spliced pole 9 at both ends outwards stretch out (threaded cylinder 10 rotates, spliced pole 9 can not rotate by the restriction of spacing piece 91 with spout 81, so spliced pole 9 can outwards move), stretch into the inside of circular slot 16, realize fixed connection, apron 114 card is in the inboard of U type mouth 113 this moment, connection structure hardly produces the gap, when sediment work, can not influence connection structure.
The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.
Claims (1)
1. The utility model provides a colliery is soft coal seam gas drainage drilling high efficiency construction in pit arranges sediment drill bit connection structure which characterized in that includes:
one end of the guide cylinder (8) is fixedly connected with the side wall of the central hole (2), a round hole is formed in the end portion of the guide cylinder (8), the round hole penetrates through the side walls of the guide cylinder (8) and the connecting body (1), a sliding opening (81) is formed in the inner side of the guide cylinder (8), two guide cylinders (8) are arranged, the axes of the two guide cylinders (8) are overlapped, a threaded cylinder (10) is movably connected between the two guide cylinders (8), and an outer gear ring (101) is arranged on the outer side of the threaded cylinder (10);
the connecting column (9) is positioned inside the circular hole of the guide cylinder (8), the side face of the guide cylinder (8) and the inside of the sliding opening (81) are fixedly connected with a limiting block (91), one end of the connecting column (9) extends to the outside of the connector (1), the other end of the connecting column extends to the inside of the threaded cylinder (10), and the connecting column (9) is in threaded fit with the threaded cylinder (10);
connector (11), connector (11) set up the side at connector (1), and the draw runner has been seted up to the side of connector (11), the axial of draw runner is perpendicular with the axial of a screw thread section of thick bamboo (10), the inside interference fit of draw runner has drive post (113), the one end of drive post (113) just is located the outside fixedly connected with apron (114) of connector (1), the inside fixedly connected with drive rack (111) of centre bore (2) are stretched into to the other end of drive post (113), drive rack (111) and outer ring gear (101) mesh mutually, the inside wall of centre bore (2) just is located top fixedly connected with limiting plate (112) of drive rack (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123000702.4U CN216517857U (en) | 2021-12-01 | 2021-12-01 | Connecting structure of deslagging drill bit for efficient construction of gas extraction drill hole of soft coal seam under coal mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123000702.4U CN216517857U (en) | 2021-12-01 | 2021-12-01 | Connecting structure of deslagging drill bit for efficient construction of gas extraction drill hole of soft coal seam under coal mine |
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| CN216517857U true CN216517857U (en) | 2022-05-13 |
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| CN202123000702.4U Active CN216517857U (en) | 2021-12-01 | 2021-12-01 | Connecting structure of deslagging drill bit for efficient construction of gas extraction drill hole of soft coal seam under coal mine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263437A (en) * | 2021-12-01 | 2022-04-01 | 贵州盘江精煤股份有限公司 | High-efficiency construction slag-discharging drill bit for gas extraction drilling of soft coal seam in underground coal mine |
-
2021
- 2021-12-01 CN CN202123000702.4U patent/CN216517857U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263437A (en) * | 2021-12-01 | 2022-04-01 | 贵州盘江精煤股份有限公司 | High-efficiency construction slag-discharging drill bit for gas extraction drilling of soft coal seam in underground coal mine |
| CN114263437B (en) * | 2021-12-01 | 2023-10-20 | 贵州盘江精煤股份有限公司 | Slag discharging drill bit for high-efficiency construction of underground soft coal seam gas extraction drilling of coal mine |
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