Reamer bit for improving gas extraction concentration

Abstract

The utility model discloses a reamer bit capable of improving gas extraction concentration, and particularly relates to the technical field of gas extraction, the reamer bit comprises a connecting frame, the top of the connecting frame is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a mounting block, and the outer wall of the mounting block is provided with a clamping rod. In the gas extraction process, when drilling operation is conducted through a drill bit, in order to improve the convenience of dismounting and replacing of an expansion drill bit and prevent the situation that when the expansion drill bit conducts drilling for a long time, surface abrasion is serious, the diameter of a drill hole is reduced, and the gas extraction effect of a small drill hole is reduced, a rotary knob can be rotated through rotation of a threaded rod; the threaded sliding rod is driven to slide along the inner wall of the fixing groove, the threaded sliding rod slides through rotation of the rotating rod and connection with the connecting rod, the clamping rod is driven to slide along the outer wall of the mounting block, the clamping rod is driven to slide along the inner wall of the clamping groove, and the drill bit body is conveniently disassembled, assembled and replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas extraction, and in particular relates to a hole-enlarging drill bit for improving gas extraction concentration. Background Art

[0002] Gas itself is non-toxic, but it is not breathable and can cause people to suffocate and die due to lack of oxygen. Gas can burn or explode. Gas explosion is one of the main disasters in coal mines. There have been many cases of casualties and serious damage to production caused by gas explosions at home and abroad. In the process of gas extraction, in order to avoid gas explosion accidents and ensure safe production, corresponding preventive and control measures are needed to assist in the use of dangerous situations in the process of gas extraction.

[0003] In the Chinese patent with publication number CN218150760U, a hole-reaming drill bit for improving gas extraction concentration is disclosed, and a hole-reaming drill bit for improving gas extraction concentration that can adjust the size of the drilling area is provided. A hole-reaming drill bit for improving gas extraction concentration includes a drill bit, a connecting frame, a mounting piece and a hole-reaming mechanism. The upper part of the drill bit is connected to the connecting frame, and the upper part of the connecting frame is connected to the mounting piece. The mounting piece is used for an external drive. The rotation of the mounting piece drives the drill bit and the connecting frame to rotate together. The mounting frame is provided with a hole-reaming mechanism for expanding the drilling area. The utility model achieves the effect of improving the drilling efficiency by adjusting the hole-reaming frame so that people can better adjust the drilling size. When holes of different sizes are required, there is no need to frequently replace the drill bit.

[0004] In addition, during the gas extraction process, the reaming drill bit is often used for a long time when drilling through the drill bit. The engagement and disassembly of the reaming drill bit is not very convenient, so the surface of the reaming drill bit will be severely worn during long-term drilling. During the gas extraction process, the larger the borehole formed by the drill bit, the larger the pressure relief area, the more gas desorption and outflow, and the better the gas extraction effect. When the reaming drill bit is severely worn after long-term use, the drilling accuracy of the expansion drill bit on the borehole diameter is reduced, affecting the gas extraction effect of the drilling. Utility Model Content

[0005] The utility model aims to provide a hole enlarging drill bit for improving gas extraction concentration, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A reaming drill bit for improving gas extraction concentration comprises a connecting frame, the top of the connecting frame is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a mounting block, the inner wall of the mounting block is detachably connected to a connecting seat, the bottom of the connecting seat is welded with a drill bit body, the outer wall of the connecting frame is rotatably connected to a threaded rod, one end of the threaded rod is fixedly connected to a knob that fits the outer wall of the connecting frame, the outer wall of the threaded rod is threadedly connected to a threaded sliding rod, a fixing groove is provided at the connecting portion between the outer wall of the connecting frame and the threaded sliding rod, the outer wall of the threaded sliding rod is rotatably connected to a rotating rod, one end of the rotating rod is rotatably connected to a connecting rod, the outer wall of the connecting rod is fixedly connected to a clamping rod telescopically connected to the outer wall of the mounting block, and a clamping groove is provided at the connecting portion between the outer wall of the connecting seat and the clamping rod.

[0008] Preferably, an electric push rod is fixedly connected to the inner wall of the connecting frame, one end of the electric push rod is fixedly connected to a protective plate located on one side of the drill body, and the top of the protective plate is fixedly connected to a telescopic rod telescopically connected to the inner wall of the connecting frame.

[0009] Preferably, the inner wall contour of the mounting block is matched with the outer wall contour of the connecting seat.

[0010] Preferably, the threaded sliding rod forms a lifting structure between the threaded rod and the fixing groove.

[0011] Preferably, the rotating rod forms a rotating structure through the threaded sliding rod and the connecting rod, and two groups of rotating rods are provided, and the positions of the two groups of rotating rods are distributed symmetrically about the central axis of the threaded sliding rod.

[0012] Preferably, the clamping rod forms a telescopic structure with the mounting block through the rotating rod and the connecting rod, and two groups of the connecting rod and the clamping rod are provided, and the position distribution of the two groups of the connecting rod and the clamping rod is symmetrical about the central axis of the connecting frame.

[0013] Preferably, the connecting seat forms a clamping structure with the mounting block through the clamping rod and the clamping groove.

[0014] Preferably, the protective plate forms a protective structure with the drill body through the electric push rod and the telescopic rod, and two groups of protective plates are provided. The positions of the two groups of protective plates are symmetrical about the central axis of the drill body, and the outer wall profile of the drill body is in a "U" shape.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The utility model provides a clamping rod on the outer wall of the mounting block. During the gas extraction process, when drilling is performed by a drill bit, in order to improve the convenience of disassembly, assembly and replacement of the expansion drill bit and prevent the expansion drill bit from being seriously worn out when drilling for a long time, thereby reducing the diameter of the borehole and reducing the effect of gas extraction of a smaller borehole, the knob can be turned to rotate the threaded rod to drive the threaded slide rod to slide along the inner wall of the fixed groove. The sliding of the threaded slide rod is connected to the connecting rod through the rotation of the rotating rod, thereby driving the clamping rod to slide along the outer wall of the mounting block and the inner wall of the clamping groove, thereby facilitating the disassembly, assembly and replacement of the drill bit body.

[0017] (2) The utility model is provided with a protective plate on the outer wall of the drill bit body. When the drill bit is used for gas extraction, in order to improve the protection of the drill bit during drilling, the part of the drill bit protruding from the rock is lowered and in contact with the rock, so that the rock is broken under the action of the high-speed movement of the drill bit, causing the crushed stone to splash and causing accidental injury to the mining personnel. The electric push rod can be opened to drive the connection of the telescopic rod, driving the protective plate to move up and down along the side of the drill bit protruding from the rock, thereby effectively preventing the splash of the drill bit mining debris. (They are different, the effects are different, and the effects achieved are also different. This case is to prevent the splash of crushed stone from causing accidental injury to the construction personnel, while the protective plate in the previous case, on the one hand, plays a role in assisting the crushed stone in buffering the material discharge, and on the other hand, plays an effective support role in the surrounding area of ​​mining to prevent collapse.) BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is one of the three-dimensional diagrams of the utility model;

[0019] Figure 2 This is the second stereogram of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the clamping rod and the clamping slot of the utility model;

[0021] Figure 4 It is a schematic diagram of the protective plate and telescopic rod structure of the utility model.

[0022] In the figure: 1. connecting frame; 2. driving motor; 3. mounting block; 4. connecting seat; 5. drill body; 6. threaded rod; 7. knob; 8. threaded slide rod; 9. fixing groove; 10. rotating rod; 11. connecting rod; 12. clamping rod; 13. clamping groove; 14. electric push rod; 15. protective plate; 16. telescopic rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] See also Figure 1-Figure 3 As shown, a reaming drill bit for improving gas extraction concentration comprises a connecting frame 1, a driving motor 2 is fixedly connected to the top of the connecting frame 1, a mounting block 3 is fixedly connected to the output end of the driving motor 2, a connecting seat 4 is detachably connected to the inner wall of the mounting block 3, a drill body 5 is welded to the bottom of the connecting seat 4, a threaded rod 6 is rotatably connected to the outer wall of the connecting frame 1, a knob 7 that fits the outer wall of the connecting frame 1 is fixedly connected to one end of the threaded rod 6, a threaded sliding rod 8 is threadedly connected to the outer wall of the threaded rod 6, a fixing groove 9 is provided at the connecting portion between the outer wall of the connecting frame 1 and the threaded sliding rod 8, a rotating rod 10 is rotatably connected to the outer wall of the threaded sliding rod 8, a connecting rod 11 is rotatably connected to one end of the rotating rod 10, and the outer wall of the connecting rod 11 is fixedly connected to the outer wall of the mounting block 3. A clamping rod 12 is telescopically connected to the wall, and a clamping groove 13 is provided at the connection position between the outer wall of the connecting seat 4 and the clamping rod 12. During the gas extraction process, when the drill bit is used to perform drilling operations, in order to improve the convenience of disassembly, assembly and replacement of the expansion drill bit and prevent the expansion drill bit from being seriously worn on the surface during drilling for a long time, resulting in a reduction in the diameter of the borehole and reducing the effect of gas extraction in a smaller borehole, the knob 7 can be rotated to drive the threaded slide rod 8 to slide along the inner wall of the fixed groove 9 through the rotation of the threaded rod 6. The sliding of the threaded slide rod 8 is connected to the connecting rod 11 through the rotation of the rotating rod 10, driving the clamping rod 12 to slide along the outer wall of the mounting block 3, and driving the clamping rod 12 to slide along the inner wall of the clamping groove 13, thereby facilitating the disassembly, assembly and replacement of the drill bit body 5.

[0026] Specifically, the inner wall contour of the mounting block 3 and the outer wall contour of the connecting seat 4 are matched with each other, and the drill bit can be pre-positioned and installed by matching the inner wall contour of the mounting block 3 and the outer wall contour of the connecting seat 4.

[0027] Specifically, the threaded slide rod 8 forms a lifting structure between the threaded rod 6 and the fixed groove 9. The rotation of the threaded rod 6 drives the threaded slide rod 8 to slide along the inner wall of the fixed groove 9, thereby realizing the control operation of the rotation of the rotating rod 10.

[0028] Specifically, the rotating rod 10 forms a rotating structure through the threaded sliding rod 8 and the connecting rod 11. Two groups of rotating rods 10 are provided. The position distribution of the two groups of rotating rods 10 is symmetrical about the central axis of the threaded sliding rod 8. The threaded sliding rod 8 slides through the connection of the connecting rod 11, driving the rotating rod 10 to rotate, thereby realizing the control operation of the telescopic movement of the card rod 12.

[0029] Specifically, the clamping rod 12 forms a telescopic structure with the mounting block 3 through the rotating rod 10 and the connecting rod 11. Two groups of connecting rods 11 and clamping rods 12 are provided. The position distribution of the two groups of connecting rods 11 and clamping rods 12 is symmetrical about the central axis of the connecting frame 1. The rotation of the rotating rod 10 drives the clamping rod 12 to slide along the outer wall of the mounting block 3 through the connection of the connecting rod 11, thereby realizing the control operation of convenient disassembly and assembly of the drill bit.

[0030] Specifically, the connecting seat 4 forms a locking structure with the mounting block 3 through the locking rod 12 and the locking groove 13. The locking rod 12 slides along the inner wall of the locking groove 13, driving the locking and fixing movement between the mounting block 3 and the connecting seat 4, thereby facilitating the disassembly, assembly and replacement of the drill body 5.

[0031] Embodiment 2:

[0032] refer to Figure 1 , Figure 2 and Figure 4 As shown, an electric push rod 14 is fixedly connected to the inner wall of the connecting frame 1, and one end of the electric push rod 14 is fixedly connected to a protective plate 15 located on one side of the drill bit body 5, and the top of the protective plate 15 is fixedly connected to a telescopic rod 16 telescopically connected to the inner wall of the connecting frame 1. When the drill bit is used for gas extraction, in order to improve the protection of the drill bit during drilling, the part of the drill bit protruding from the rock is lowered and contacted with the rock, so that the rock is broken under the action of the high-speed moving drill bit, causing the crushed stone to splash, which may cause accidental injury to the mining personnel. The electric push rod 14 can be opened to drive the connection of the telescopic rod 16, and drive the protective plate 15 to move up and down along the side of the drill bit protruding from the rock, thereby effectively preventing the drill bit from splashing mining debris.

[0033] Specifically, the protective plate 15 forms a protective structure with the drill body 5 through the electric push rod 14 and the telescopic rod 16. Two groups of protective plates 15 are provided. The position distribution of the two groups of protective plates 15 is symmetrical about the central axis of the drill body 5. The outer wall profile of the drill body 5 is in a "U" shape. The electric push rod 14 is driven through the connection of the telescopic rod 16 to drive the protective plate 15 to telescopic movement along one side of the drill body 5, thereby effectively preventing the drill bit from mining debris from splashing.

[0034] Working principle: First, during the gas extraction process, when drilling is performed through the drill bit, in order to improve the convenience of disassembly, assembly and replacement of the expansion drill bit and prevent the expansion drill bit from being seriously worn on the surface during drilling for a long time, resulting in a reduction in the diameter of the borehole and reducing the effect of smaller boreholes on gas extraction, the knob 7 can be turned to rotate the threaded rod 6 to drive the threaded slide rod 8 to slide along the inner wall of the fixed groove 9. The sliding of the threaded slide rod 8 is connected to the connecting rod 11 through the rotation of the rotating rod 10, driving the clamping rod 12 to slide along the outer wall of the mounting block 3, and driving the clamping rod 12 to slide along the inner wall of the clamping groove 13, thereby facilitating the disassembly, assembly and replacement of the drill bit body 5.

[0035] Finally, when the drill bit is used for gas extraction, in order to improve the protection of the drill bit during drilling, the part of the drill bit that protrudes from the rock is lowered and comes into contact with the rock, so that the rock is broken under the action of the high-speed moving drill bit, causing the crushed stone to splash and causing accidental injury to the mining personnel. The electric push rod 14 can be opened to drive the connection of the telescopic rod 16, and drive the protective plate 15 to move up and down along the side of the drill bit that protrudes from the rock, thereby effectively preventing the splashing of the drill bit mining debris.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hole enlarging drill bit for improving gas extraction concentration, characterized in that: include: A connecting frame (1), the top of the connecting frame (1) is fixedly connected to a driving motor (2), the output end of the driving motor (2) is fixedly connected to a mounting block (3), the inner wall of the mounting block (3) is detachably connected to a connecting seat (4), the bottom of the connecting seat (4) is welded to a drill head body (5), the outer wall of the connecting frame (1) is rotatably connected to a threaded rod (6), one end of the threaded rod (6) is fixedly connected to a knob (7) that fits the outer wall of the connecting frame (1), and the threaded rod (6) is The outer wall is threadedly connected to a threaded slide rod (8); a fixing groove (9) is provided at a connection position between the outer wall of the connecting frame (1) and the threaded slide rod (8); the outer wall of the threaded slide rod (8) is rotatably connected to a rotating rod (10); one end of the rotating rod (10) is rotatably connected to a connecting rod (11); the outer wall of the connecting rod (11) is fixedly connected to a clamping rod (12) telescopically connected to the outer wall of the mounting block (3); and a clamping groove (13) is provided at a connection position between the outer wall of the connecting seat (4) and the clamping rod (12).

2. A reamer drill bit for improving gas extraction concentration according to claim 1, characterized in that: An electric push rod (14) is fixedly connected to the inner wall of the connecting frame (1), one end of the electric push rod (14) is fixedly connected to a protective plate (15) located on one side of the drill body (5), and the top of the protective plate (15) is fixedly connected to a telescopic rod (16) telescopically connected to the inner wall of the connecting frame (1).

3. The reaming drill bit for improving gas extraction concentration according to claim 1, characterized in that: The inner wall contour of the mounting block (3) and the outer wall contour of the connecting seat (4) are arranged to be matched.

4. The reaming drill bit for improving gas extraction concentration according to claim 1, characterized in that: The threaded sliding rod (8) forms a lifting structure through the threaded rod (6) and the fixing groove (9).

5. The reaming drill bit for improving gas extraction concentration according to claim 1, characterized in that: The rotating rod (10) forms a rotating structure through the threaded sliding rod (8) and the connecting rod (11). Two groups of the rotating rod (10) are provided, and the positions of the two groups of the rotating rod (10) are distributed symmetrically with respect to the central axis of the threaded sliding rod (8).

6. The reaming drill bit for improving gas extraction concentration according to claim 1, characterized in that: The clamping rod (12) forms a telescopic structure with the mounting block (3) through the rotating rod (10) and the connecting rod (11); two groups of the connecting rod (11) and the clamping rod (12) are provided; and the positions of the two groups of the connecting rod (11) and the clamping rod (12) are symmetrical with respect to the central axis of the connecting frame (1).

7. The reaming drill bit for improving gas extraction concentration according to claim 1, characterized in that: The connecting seat (4) forms a snap-fit ​​structure with the mounting block (3) through the snap rod (12) and the snap groove (13).

8. The reaming drill bit for improving gas extraction concentration according to claim 2, characterized in that: The protective plate (15) forms a protective structure with the drill body (5) through the electric push rod (14) and the telescopic rod (16). Two groups of protective plates (15) are provided. The positions of the two groups of protective plates (15) are symmetrical about the central axis of the drill body (5). The outer wall profile of the drill body (5) is in a "U" shape.

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