Coal mine underground safety drilling rig

Abstract

The utility model provides an underground coal mine safety drilling rig. The underground coal mine safety drilling device comprises a base and a protection assembly, top hydraulic rods are fixedly connected to the edges of the front side and the rear side of the top of the base, fixing pieces are fixedly connected to the tops of the top hydraulic rods, and the protection assembly comprises an outer support. The two outer supports are fixedly connected with the fixing pieces on the two sides correspondingly, inner supports are slidably connected to the interiors of the outer supports, first lug plates and second lug plates are fixedly connected to the top edges of the inner supports and the top edges of the outer supports correspondingly, inner rods are fixedly connected to the surfaces of the first lug plates, and outer rods are fixedly connected to the surfaces of the second lug plates. The underground coal mine safety drilling rig has the advantages that coal cinder, coal dust and the like on the top of a roadway can be intercepted, and meanwhile protection can be provided when a top plate is broken and falls off.

Description

Technical Field

[0001] The utility model relates to the field of coal mine drilling, in particular to a safe drilling device for coal mine underground. Background Art

[0002] The main uses of coal mine underground drilling equipment include: geological exploration, gas drainage, coal seam water injection, and auxiliary fire fighting and rescue, etc. Through the drilling equipment, geological information and coal seam samples can be obtained, and the geological structure, coal seam thickness, lithology, etc. of the mining area can be explored and analyzed in detail, providing accurate geological data for mine design, development, and coal mining method selection, and ensuring the reasonable development and utilization of coal resources.

[0003] There are still certain deficiencies in the use of traditional coal mine underground drilling devices: when the current drilling equipment is used in coal mine underground, although a coal mine support protection net will be set at the top of the roadway, when the mine drill works, it will generate large vibrations, and the protection net cannot intercept small gangue, coal blocks, coal dust and other impurities falling from the top well, so that the workers installing drill pipes or operating consoles below cannot be effectively protected, and at the same time, the equipment cannot be protected. At the same time, when the pressure at the top of the roadway is large, the single support net structure may have insufficient strength, and thus cannot provide sufficient protection for the workers.

[0004] Therefore, it is necessary to provide a new safe drilling device for coal mine underground to solve the above technical problems. Summary of the Utility Model

[0005] The technical problem solved by the utility model is to provide a safe drilling device for coal mine underground that can intercept coal slag, coal dust, etc. at the top of the roadway and can provide protection when the roof cracks and falls.

[0006] To solve the above technical problems, a safe drilling device for coal mine underground provided by the utility model includes: a base and a protection component. At the front and rear edge positions of the top of the base, top hydraulic rods are fixedly connected. The top of the top hydraulic rods is fixedly connected with a fixing piece. The protection component includes an outer bracket. There are two outer brackets, which are respectively fixedly connected with the fixing pieces on both sides. An inner bracket is slidably connected inside the outer bracket. At the top edge position of the inner bracket and the top edge position of the outer bracket, an ear plate one and an ear plate two are respectively fixedly connected. An inner rod is fixedly connected to the surface of the ear plate one. An outer rod is fixedly connected to the top of the ear plate two. The outer rod and the inner rod are slidably connected between them. A protective sleeve is fixedly connected between the ear plate one and the ear plate two. The inner rod and the outer rod are located inside the protective sleeve. A protective cloth is fixedly connected between the two protective sleeves.

[0007] Both of the two inner rods and the two outer rods are fixedly connected with chains on the surfaces of the side walls facing away from each other, and a fixing rod is fixedly connected to the end of the chain.

[0008] As a further solution of the present utility model, a support rod is fixedly connected to the top of the fixing member, the support rod penetrates through the surface of the protective cloth and is fixedly connected with an upper pressing plate, and bottom hydraulic rods are fixedly connected to the four corners of the base, and a lower pressing plate is fixedly connected to the bottom end of the bottom hydraulic rod.

[0009] Through the above technical solution, before the drill rod works inside the roadway, the four bottom hydraulic rods and the two top hydraulic rods can be started, and the position of the whole drill rig can be fixed through the lower pressing plate and the upper pressing plate, so as to prevent it from shifting during the drilling process of the drill rod.

[0010] As a further solution of the present utility model, driving motors are fixedly connected to the surfaces of one side walls of the two outer brackets relative to the inner brackets, the output ends of the driving motors are fixedly connected with threaded rods, and the threaded rods are located inside the outer brackets and are threadedly connected with the inner brackets.

[0011] Through the above technical solution, when the current drilling equipment is used underground in coal mines, although a coal mine support protection net is provided on the top of the roadway, when the mining drill rig works, it will generate relatively large vibrations, and the protection net cannot intercept small gangue, coal blocks, coal dust and other impurities falling from the top well. In this device, the user can start the driving motor to drive the threaded rod to rotate before the drill rig runs, so that the inner bracket extends out of the outer bracket. At this time, the inner rod moves towards one end, and the retracted protective cloth unfolds to cover the structures such as the base and the drill rod at the bottom, so that some gangue, coal dust and broken coal blocks above will not fall on the workers when they install the drill rod or operate the equipment, and at the same time, it can avoid polluting or damaging the equipment body, so as to play a certain protective role, and the structural design is user-friendly.

[0012] As a further solution of the present utility model, an installation member is arranged on the upper side of the base, angle adjustment oil cylinders are hinged between the four corners of the installation member and the top surface of the base, and a sliding seat is slidably connected to the top of the installation member.

[0013] Through the above technical solution, the overall height or pitching angle of the installation member can be controlled through the angle adjustment oil cylinders, so as to facilitate the drill rig to drill at different positions. In the structure, the top of the angle adjustment oil cylinder is hinged to the installation member, and its bottom is hinged to the base. Therefore, when it is necessary to adjust the head of the installation member to tilt up, the two front angle adjustment oil cylinders are started to rise. At this time, since the two rear angle adjustment oil cylinders do not move, the front end of the installation member will be pushed up by the force, so that the angle changes.

[0014] As a further solution of the utility model, a screw rod is rotatably connected to the top of the mounting piece, a control motor is fixedly connected to a side wall surface of the mounting piece, and an output end of the control motor is fixedly connected to one end of the screw rod.

[0015] Through the above technical solution, the motor can be controlled to drive the screw rod to rotate, thereby allowing the sliding seat that is slidably connected to the mounting member to be advanced.

[0016] As a further solution of the utility model, clamps are provided at the front and rear sides of the mounting member, the clamps are fixedly connected to the mounting member via a connecting plate, and a power head is fixedly connected to the top of the sliding seat.

[0017] Through the above technical solution, the clamp and the power head are both main equipment on the coal mine drilling rig. The clamp is a structure for fixing and clamping the drill rod when necessary, and the power head provides power for the drill rod to rotate the drill bit. The clamp in this structure is a common coal mine clamp on the market, that is, one side is a fixed end, and the other side is a movable end driven by a cylinder. When fixing the drill rod, the movable end is pushed by the cylinder to clamp the surface of the drill rod on the fixed end.

[0018] As a further solution of the utility model, the power head is fixedly connected to a drill rod, a plurality of drill rods are provided and two adjacent drill rods are fixedly connected, and a drill bit is fixedly connected to the end of the drill rod away from the power head.

[0019] Through the above technical solution, the drill rods are fixedly connected, and the drill bit at the end of the drill rod will drill into the coal seam to obtain coal seam samples for detailed exploration and analysis of the geological structure, coal seam thickness, lithology, etc. of the mining area.

[0020] Compared with the related art, the utility model provides a safe underground coal mine drilling device with the following beneficial effects:

[0021] 1. In the utility model, when the current drilling equipment is used underground in a coal mine, although a coal mine support and protection net is set on the top of the tunnel, when the mining drill is working, it will generate a large vibration, and the protection net cannot well intercept the smaller impurities such as gangue, coal blocks and coal dust falling from the top. In this device, the user can start the drive motor to rotate the threaded rod before the drilling machine is running, so that the inner bracket extends out of the outer bracket. At this time, the inner rod moves to one end, and the retracted protective cloth is unfolded to cover the bottom base, drill rod and other structures. In this way, some gangue, coal dust and broken coal blocks above will not fall on the workers when they install the drill rod or operate the equipment, and at the same time avoid pollution or damage to the equipment body, so as to provide certain protection and humanized structural design;

[0022] 2. In the present utility model, after the drilling work is completed, the user can start the driving motor to drive the threaded rod to rotate, so that the inner support is retracted into the outer support, and the protection component can be folded up to avoid occupying too much space. The structural design is user-friendly and convenient for use inside the coal mine roadway. At the same time, when the protection net is in use, the staff can fix the fixing rod at the end of the chain on the left and right walls of the coal mine roadway, so that the protection structure can have stronger support and protection effects, and avoid the ineffective interception and support of the single support net after the roadway roof is broken. This structural design can play a certain role in protecting the personal safety of the drilling workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] For the convenience of those skilled in the art to understand, the present utility model will be further described below in conjunction with the drawings.

[0024] Figure 1 is the overall structural schematic diagram of a coal mine underground safety drilling device in the present utility model;

[0025] Figure 2 is the partial structural schematic of a coal mine underground safety drilling device in the present utility model Figure 1 ;

[0026] Figure 3 is the partial structural schematic of a coal mine underground safety drilling device in the present utility model Figure 2 ;

[0027] Figure 4 is the partial structural cross-sectional view of a coal mine underground safety drilling device in the present utility model.

[0028] MAIN SYMBOL DESCRIPTION:

[0029] 1. Base; 2. Protection component; 3. Driving motor; 4. Sheath; 5. Protection cloth; 6. Top hydraulic rod; 7. Bottom hydraulic rod; 8. Drill pipe; 9. Lead screw; 10. Mounting part; 11. Sliding seat; 12. Angle adjustment oil cylinder; 13. Power head; 14. Clamp; 15. Control motor; 16. Outer support; 17. Inner support; 18. Chain; 19. Fixing rod; 20. Support rod; 21. Threaded rod; 22. Outer rod; 23. Inner rod; 24. Fixing piece. SPECIFIC EMBODIMENTS

[0030] Please refer to Figures 1 to 4 , wherein, Figure 1 is the overall structural schematic diagram of a coal mine underground safety drilling device in the present utility model; Figure 2 is the partial structural schematic of a coal mine underground safety drilling device in the present utility model Figure 1 ; Figure 3 is the partial structural schematic of a coal mine underground safety drilling device in the present utility modelFigure 2 ; Figure 4 This is a partial structural sectional view of a safety drilling device in a coal mine underground. A safety drilling device in a coal mine underground includes:

[0031] A base 1 and a protection assembly 2. At the front and rear edge positions of the top of the base 1, top hydraulic rods 6 are fixedly connected. The top of the top hydraulic rod 6 is fixedly connected with a fixing member 24. The protection assembly 2 includes outer brackets 16. There are two outer brackets 16 which are respectively fixedly connected with the fixing members 24 on both sides. An inner bracket 17 is slidably connected inside the outer bracket 16. At the top edge position of the inner bracket 17 and the top edge position of the outer bracket 16, an ear plate one and an ear plate two are respectively fixedly connected. On the surface of the ear plate one, an inner rod 23 is fixedly connected. At the top of the ear plate two, an outer rod 22 is fixedly connected. The outer rod 22 and the inner rod 23 are slidably connected between them. A protective sheath 4 is fixedly connected between the ear plate one and the ear plate two. The inner rod 23 and the outer rod 22 are located inside the protective sheath 4. A protective cloth 5 is fixedly connected between the two protective sheaths 4;

[0032] On the surface of the side walls of the two inner rods 23 and the two outer rods 22 relative to the far - away side, chains 18 are fixedly connected. The end of the chain 18 is fixedly connected with a fixing rod 19.

[0033] As Figures 1-4 shown, a support rod 20 is fixedly connected to the top of the fixing member 24. The support rod 20 penetrates through the surface of the protective cloth 5 and is fixedly connected with an upper pressing plate. At the four - corner positions of the base 1, bottom hydraulic rods 7 are fixedly connected. The bottom end of the bottom hydraulic rod 7 is fixedly connected with a lower pressing plate.

[0034] Before the drill pipe 8 works inside the roadway, the four bottom hydraulic rods 7 and the two top hydraulic rods 6 can be started. The position of the whole drill rig is fixed through the lower pressing plate and the upper pressing plate to prevent it from shifting during the drilling process of the drill pipe 8.

[0035] As Figures 1-4 shown, on the surface of the side walls of the two outer brackets 16 relative to the inner bracket 17, drive motors 3 are fixedly connected. The output end of the drive motor 3 is fixedly connected with a threaded rod 21. The threaded rod 21 is located inside the outer bracket 16 and is thread - connected with the inner bracket 17.

[0036] When the current drilling equipment is used underground in coal mines, although a coal mine support protection net is set at the top of the roadway, when the mining drill works, it will generate relatively large vibrations, and the protection net cannot intercept small gangue, coal blocks, coal dust and other impurities falling from the top well. In this device, the user can start the driving motor 3 to drive the threaded rod 21 to rotate before the drill operates, so that the inner support 17 extends out of the outer support 16. At this time, the inner rod 23 moves towards one end, and the retracted protective cloth 5 unfolds to cover structures such as the base 1 and the drill pipe 8 at the bottom. In this way, some gangue, coal dust and broken coal blocks above will not fall on the workers when they install the drill pipe 8 or operate the equipment, and at the same time, it can prevent the equipment body from being polluted or damaged, playing a certain protective role, and the structural design is user-friendly.

[0037] As Figures 1-4 shown, an installation part 10 is arranged on the upper side of the base 1. Angle adjustment oil cylinders 12 are hinged between the four corners of the installation part 10 and the top surface of the base 1, and a sliding seat 11 is slidably connected to the top of the installation part 10.

[0038] The overall height or pitching angle of the installation part 10 can be controlled by the angle adjustment oil cylinders 12, so as to facilitate the drill to drill at different positions. In the structure, the top of the angle adjustment oil cylinder is hinged to the installation part 10, and its bottom is hinged to the base 1. Therefore, when it is necessary to adjust the head of the installation part 10 to tilt up, start the two angle adjustment oil cylinders 12 at the front side to rise. At this time, since the two angle adjustment oil cylinders 12 at the rear side do not move, the front end of the installation part 10 will be pushed up by the force, resulting in an angle change.

[0039] As Figures 1-4 shown, a lead screw 9 is rotatably connected to the top of the installation part 10, and a control motor 15 is fixedly connected to the surface of one side wall of the installation part 10. The output end of the control motor 15 is fixedly connected to one end of the lead screw 9.

[0040] The control motor 15 can drive the lead screw 9 to rotate, and then push the sliding seat 11 slidably connected to the installation part 10.

[0041] As Figures 1-4 shown, grippers 14 are arranged at the front and rear positions of the installation part 10. The grippers 14 are fixedly connected to the installation part 10 through connecting plates, and a power head 13 is fixedly connected to the top of the sliding seat 11.

[0042] Both the grippers 14 and the power head 13 are the main equipment on the coal mine drill. The gripper 14 is a structure for fixing and clamping the drill pipe 8 when necessary, and the power head 13 will provide power for the drill pipe 8 to rotate the drill bit. The gripper 14 in this structure is a common gripper 14 for coal mine mining machines on the market, that is, one side is a fixed end and the other side is a movable end driven by an oil cylinder. When fixing the drill pipe 8, the movable end is pushed by the oil cylinder to clamp the surface of the drill pipe 8 on the fixed end.

[0043] like Figures 1-4 As shown, the power head 13 is fixedly connected to the drill rod 8, a plurality of drill rods 8 are provided and two adjacent drill rods 8 are fixedly connected, and a drill bit is fixedly connected to the end of the drill rod 8 away from the power head 13.

[0044] The drill rods 8 are fixedly connected to each other, and the drill bit at the end of the drill rod 8 will drill the coal seam to obtain coal seam samples for detailed exploration and analysis of the geological structure, coal seam thickness, lithology, etc. of the mining area.

[0045] The working principle of a safe drilling device for underground coal mines provided by the utility model is as follows:

[0046] Step 1: When the current drilling equipment is used underground in a coal mine, although a coal mine support and protection net is set on the top of the tunnel, when the mining drill is working, it will generate a large vibration, and the protection net cannot well intercept the smaller impurities such as gangue, coal blocks and coal dust falling from the top. In this device, the user can start the drive motor 3 before the drilling machine is running to drive the threaded rod 21 to rotate, so that the inner bracket 17 extends out of the outer bracket 16. At this time, the inner rod 23 moves to one end, and the retracted protection cloth 5 is unfolded to cover the bottom base 1, drill rod 8 and other structures, so that some gangue, coal dust and broken coal blocks above will not fall on the workers when they install the drill rod 8 or operate the equipment, and at the same time avoid pollution or damage to the equipment body, so as to provide certain protection and humanized structural design;

[0047] The second step: in this device, when the drilling work is completed, the user can start the drive motor 3 to drive the threaded rod 21 to rotate, and then retract the inner bracket 17 into the outer bracket 16 to fold the protective component 2 to avoid it taking up too much space. The humanized structural design is convenient for its use inside the coal mine tunnel. At the same time, when the protective net is in use, the staff can fix the fixed rod 19 at the end of the chain 18 to the left and right walls of the coal mine tunnel, so that the protective structure can have a stronger support and protection effect to avoid the failure of the separate support net to effectively intercept and support after the tunnel roof is broken. This structural design can provide certain protection for the personal safety of drilling workers.

[0048] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0049] All the standard parts used can be purchased from the market, and can also be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the components known to those skilled in the art, whose structures and principles can all be learned by those skilled in the art through technical manuals or through conventional experimental methods.

[0050] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, or directly or indirectly applied. In other related technical fields, the scope of the present utility model is defined by the appended claims and their equivalents, and is similarly included within the scope of the patent protection of the present utility model.

Claims

1. A safe drilling device for underground coal mines, characterized in that: The invention comprises a base (1) and a protective assembly (2), wherein the top and rear edges of the top of the base (1) are fixedly connected to a top hydraulic rod (6), the top of the top hydraulic rod (6) is fixedly connected to a fixing member (24), the protective assembly (2) comprises an outer bracket (16), the outer bracket (16) is provided with two fixing members (24) on both sides, respectively, the inner bracket (17) is slidably connected to the inside of the outer bracket (16), and the top edge of the inner bracket (17) is fixedly connected to the top of the top hydraulic rod (6). The first ear plate and the second ear plate are respectively fixedly connected at the edge position and the top edge position of the outer bracket (16); the surface of the first ear plate is fixedly connected with an inner rod (23); the top of the second ear plate is fixedly connected with an outer rod (22); the outer rod (22) and the inner rod (23) are slidably connected; a protective sheath (4) is fixedly connected between the first ear plate and the second ear plate; the inner rod (23) and the outer rod (22) are located on the inner side of the protective sheath (4); and a protective cloth (5) is fixedly connected between the two protective sheaths (4); The two inner rods (23) and the two outer rods (22) are fixedly connected with chains (18) relative to a side wall surface away from each other, and the ends of the chains (18) are fixedly connected with fixed rods (19).

2. The safety drilling device for underground coal mines according to claim 1, characterized in that: The top of the fixing member (24) is fixedly connected to a support rod (20), the support rod (20) penetrates the surface of the protective cloth (5) and is fixedly connected to an upper pressure plate, the four corners of the base (1) are fixedly connected to bottom hydraulic rods (7), and the bottom end of the bottom hydraulic rod (7) is fixedly connected to a lower pressure plate.

3. The safety drilling device for underground coal mines according to claim 1, characterized in that: The two outer brackets (16) are fixedly connected to a drive motor (3) on a side wall surface relative to the inner bracket (17); an output end of the drive motor (3) is fixedly connected to a threaded rod (21); the threaded rod (21) is located inside the outer bracket (16) and is threadedly connected to the inner bracket (17).

4. The safety drilling device for underground coal mines according to claim 1, characterized in that: A mounting member (10) is provided on the upper side of the base (1), and angle adjustment cylinders (12) are hingedly connected between the four corners of the mounting member (10) and the top surface of the base (1), and a sliding seat (11) is slidably connected to the top of the mounting member (10).

5. The underground safety drilling device for coal mines according to claim 4, characterized in that: The top of the mounting member (10) is rotatably connected to a screw rod (9), a side wall surface of the mounting member (10) is fixedly connected to a control motor (15), and an output end of the control motor (15) is fixedly connected to one end of the screw rod (9).

6. The underground safety drilling device for coal mines according to claim 5, characterized in that: Clamps (14) are provided at the front and rear sides of the mounting member (10), and the clamps (14) are fixedly connected to the mounting member (10) via a connecting plate. A power head (13) is fixedly connected to the top of the sliding seat (11).

7. The underground safety drilling device of coal mine according to claim 6, characterized in that: The power head (13) is fixedly connected to a drill rod (8), a plurality of drill rods (8) are provided and two adjacent drill rods (8) are fixedly connected, and a drill bit is fixedly connected to the end of the drill rod (8) away from the power head (13).

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