Coal mining equipment

Abstract

The present invention relates to the field of coal mine technology, and in particular to a coal mine mining equipment, including a drill bit, a telescopic mechanism, a dust reduction mechanism and a transmission mechanism. By arranging the telescopic mechanism, the transmission mechanism and the dust reduction mechanism to cooperate with each other, while ensuring that the transmission mechanism can normally drive the drill bit to rotate and automatically move downward to drill a hole, the dust reduction mechanism is triggered to work, thereby reducing the damage to workers caused by part of the dust continuing to move upward and diffuse into the air.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mines, and in particular to coal mining equipment. Background Art

[0002] Coal mine machinery and equipment refers to machinery that is professionally engaged in mining, ore dressing and prospecting. A large number of cranes, conveyors, ventilators and drainage machinery used in mining operations are collectively referred to as coal mine machinery and equipment. Geological surveys are required during coal mining. The drilling device is a mechanical equipment that uses power equipment to drive the drill tool underground to obtain physical geological data during geological surveys. Its main function is to drive the drill tool to break underground rocks. The drill tool that is lowered or pulled out of the hole can be used to drill cores, ore cores, rock cuttings, gas samples, liquid samples, etc., to explore underground geology and mineral resources.

[0003] However, in existing coal mining, when blasting and drilling are carried out, the rock strata are crushed when the drill moves downward to drill and break the surface rock strata, and under the huge impact force of the drill, a large amount of dust generated by the crushed rock strata spreads outward, causing great discomfort to the workers.

[0004] In view of this, in order to overcome the above technical problems, the present invention designs a coal mining equipment to improve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is as follows: In the existing coal mining, when blasting and drilling are carried out, as the drill moves downward to drill and break the underground rock layer, the rock layer is crushed, and under the huge impact force of the drill, a large amount of dust generated by the crushed rock layer spreads outward, and the spread dust causes great discomfort to the workers.

[0006] The present invention provides a coal mining device, comprising a drill bit and:

[0007] A base, the base being arranged outside the drill bit;

[0008] A bracket, wherein the bracket is arranged on both sides of the base and one end of the bracket is fixedly connected to the base;

[0009] A mounting plate, the mounting plate being fixedly connected to an end of the bracket away from the base;

[0010] Telescopic mechanism, two telescopic mechanisms are symmetrically fixedly connected to the lower surface of the mounting plate; the telescopic mechanism is an electric push rod;

[0011] A dust reduction mechanism, which is located below the telescopic mechanism and is arranged on both sides of the drill bit, and is used to reduce dust when the drill bit is drilling;

[0012] The transmission mechanism is arranged above the drill bit and is used to provide power for the drill bit to drill holes.

[0013] Preferably, the transmission mechanism comprises:

[0014] A motor, wherein the motor is arranged above the drill bit;

[0015] A pressing plate, wherein the upper surface of the pressing plate is fixedly connected to the output end of the telescopic mechanism, the upper surface of the pressing plate is fixedly connected to the motor, and the rotating shaft of the motor passes through the pressing plate downward;

[0016] A mounting rod is fixedly connected to the rotating shaft of the motor, and one end of the mounting rod away from the motor is fixedly connected to the center of the drill bit.

[0017] Preferably, the dust reduction mechanism comprises:

[0018] Bucket No. 1, the bucket No. 1 is symmetrically arranged below the pressing plate, and the lower surface of the bucket No. 1 is fixedly connected to the upper surface of the base;

[0019] A pressure rod, the pressure rod is symmetrically arranged below the pressure plate, one end of the pressure rod is fixedly connected to the lower surface of the pressure plate, and one end of the pressure rod away from the pressure plate passes through the first barrel downward and is slidably connected to the upper surface of the first barrel;

[0020] A push plate, the push plate is located in barrel No. 1, and the push plate is fixedly connected to one end of the pressure rod located in barrel No. 1;

[0021] A rubber coating, wherein the rubber coating is fixedly connected to the outer surface of the push plate;

[0022] A water spray hole, the water spray hole is opened at the bottom of the barrel body of barrel No. 1;

[0023] A water outlet pipe, the water outlet pipe is fixedly connected to the wall of the water spray hole;

[0024] A plug with a hole, wherein the plug with a hole is fixedly connected to the inner surface of the water outlet pipe;

[0025] Bucket No. 2 is arranged at one side of bucket No. 1, and bucket No. 2 is connected to bucket No. 1 through a water pipe.

[0026] Preferably, the water outlet pipe is inclined downward, and the diameter of the water outlet pipe gradually decreases from the end close to barrel No. 1 to the end far away from barrel No. 1.

[0027] Preferably, the two side surfaces of the pressing plate are slidably connected to the bracket in a vertical direction.

[0028] Preferably, a dustproof cloth is provided between the No. 1 barrel and the No. 2 barrel, one end of the dustproof cloth is fixedly connected to the lower surface of the pressure plate, and the dustproof cloth is annularly surrounding the No. 1 barrel.

[0029] Preferably, the lower surface of the pressure plate is fixedly connected to the bottom of the pressure cylinder, the inner surface of the pressure cylinder is fixedly connected to a spring, one end of the spring away from the pressure cylinder is fixedly connected to a limiting cylinder, and the outer surface of the pressure cylinder is slidably connected to the inner surface of the limiting cylinder.

[0030] Preferably, a plurality of conical protrusions are fixedly connected to the outer surface of the drill bit.

[0031] Preferably, the sliding distance between the pressing cylinder and the limiting cylinder is greater than the movement stroke of the drill bit.

[0032] Preferably, the base is provided with a through hole, the diameter of which is larger than the diameter of the drill bit; the drill bit is provided with a spiral groove; the part of the spiral groove located at the front end of the drill bit is located inside the drill bit, and the spiral groove passes through the conical protrusion.

[0033] The beneficial effects of the present invention are as follows:

[0034] The present invention provides a coal mining equipment. By arranging the cooperation among a telescopic mechanism, a transmission mechanism and a dust reduction mechanism, the present invention can trigger the dust reduction mechanism to work while ensuring that the transmission mechanism can normally drive the drill bit to rotate and automatically move downward to drill a hole, thereby reducing the harm to workers caused by part of the dust continuing to move upward and diffuse into the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of a partial cross-sectional structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the cross-sectional structure of the dust suppression mechanism of the present invention;

[0038] Figure 3 It is an enlarged view of point A of the present invention;

[0039] In the figure: drill bit 1, base 2, bracket 3, mounting plate 4, telescopic mechanism 5, dust suppression mechanism 6, No. 1 bucket 61, pressure rod 62, push plate 63, rubber coating 64, water spray hole 65, water outlet pipe 66, perforated plug 67, No. 2 bucket 68, transmission mechanism 7, motor 71, pressure plate 72, mounting rod 73, dustproof cloth 8, pressure cylinder 9, spring 10, limit cylinder 11, conical protrusion 12, through hole 13. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The present invention provides a coal mining device, which improves the existing technology. When blasting and drilling are performed in coal mining, the rock layer is crushed when the drill moves downward to drill and crush the underground rock layer. Under the huge impact force of the drill, a large amount of dust generated by the crushed rock layer spreads outward, and the spread dust causes great discomfort to the workers.

[0042] The technical solution of the present invention is to solve the above technical problems. The overall idea is as follows: by setting the motor 5, the transmission mechanism 7 and the dust reduction mechanism 6 to cooperate with each other, the dust reduction mechanism 6 is triggered to work while ensuring that the transmission mechanism 7 can normally drive the drill bit 1 to rotate and automatically move downward to drill holes, thereby reducing the damage caused to the staff by the dust continuing to move upward and diffuse into the air;

[0043] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods;

[0044] The present invention provides a coal mining device, comprising a drill bit 1, and further comprising:

[0045] A base 2, wherein the base 2 is arranged outside the drill bit 1;

[0046] A bracket 3, wherein the bracket 3 is arranged on both sides of the base 2 and one end of the bracket 3 is fixedly connected to the base 2;

[0047] A mounting plate 4, wherein the mounting plate 4 is fixedly connected to an end of the bracket 3 away from the base 2;

[0048] Telescopic mechanism 5, two telescopic mechanisms 5 are symmetrically fixedly connected to the lower surface of the mounting plate 4; the telescopic mechanism 5 is an electric push rod;

[0049] A dust reduction mechanism 6, which is located below the telescopic mechanism 5 and is arranged on both sides of the drill bit 1, and is used to achieve dust reduction when the drill bit 1 is drilling;

[0050] A transmission mechanism 7, wherein the transmission mechanism 7 is disposed above the drill bit 1 and is used to provide power for the drill bit 1 to drill holes;

[0051] By adopting the above technical solution, when the staff performs blasting and drilling, the two telescopic mechanisms 5 are started at the same time, and the output end of the telescopic mechanism 5 is extended downward to drive the transmission mechanism 7 to move downward, and the transmission mechanism 7 moves downward to drive the drill bit 1 to move downward, and at the same time, the transmission mechanism 7 drives the drill bit 1 to rotate through power transmission, and the drill bit 1 moves downward and rotates to break the underground rock formation, and the dust reduction mechanism 6 is triggered to work during the process of the drill bit 1 moving downward to break the rock formation, thereby reducing the diffusion of dust when the drill bit 1 is drilling, and reducing the damage to the human body caused by some dust continuing to move upward and diffuse into the air;

[0052] Compared with the prior art, when blasting and drilling are carried out in coal mining, the rock layer is crushed when the drill moves downward to drill and break the underground rock layer, and a large amount of dust generated by the crushed rock layer spreads outward under the huge impact force of the drill, and the spread dust causes great discomfort to the workers;

[0053] The present invention sets the telescopic mechanism 5, the transmission mechanism 7 and the dust reduction mechanism 6 to cooperate with each other, so as to ensure that the transmission mechanism 7 can normally drive the drill bit 1 to rotate and automatically move downward to drill holes, and at the same time trigger the dust reduction mechanism 6 to work, thereby reducing the harm caused by some dust continuing to move upward and diffuse into the air to the workers;

[0054] Furthermore, the present invention drives the dust suppression mechanism 6 to work while ensuring the normal operation of the drill bit 1, thereby preventing dust to a certain extent, without the need for an external dust prevention power source, and has a compact structure.

[0055] As an embodiment of the present invention, the transmission mechanism 7 includes:

[0056] A motor 71, wherein the motor 71 is arranged above the drill bit;

[0057] A pressing plate 72, the upper surface of which is fixedly connected to the output end of the telescopic mechanism 5, the upper surface of which is fixedly connected to the motor 71, and the rotating shaft of the motor 71 passes through the pressing plate 72 downward;

[0058] A mounting rod 73, wherein the mounting rod 73 is fixedly connected to the rotating shaft of the motor 71, and one end of the mounting rod 73 away from the motor 71 is fixedly connected to the center of the drill bit 1;

[0059] As an embodiment of the present invention, the dust reduction mechanism 6 includes:

[0060] The first barrel 61 is symmetrically arranged below the pressing plate 72, and the lower surface of the first barrel 61 is fixedly connected to the upper surface of the base 2;

[0061] A pressure rod 62, wherein the pressure rod 62 is symmetrically arranged below the pressure plate 72, one end of the pressure rod 62 is fixedly connected to the lower surface of the pressure plate 72, and one end of the pressure rod 62 away from the pressure plate 72 downwardly penetrates the first barrel 61 and is slidably connected to the upper surface of the first barrel 61;

[0062] A push plate 63, the push plate 63 is located in the first barrel 61, and the push plate 63 is fixedly connected to one end of the pressure rod 62 located in the first barrel 61;

[0063] A rubber coating 64, wherein the rubber coating 64 is fixedly connected to the outer surface of the push plate 63;

[0064] A water spray hole 65, wherein the water spray hole 65 is provided at the bottom of the barrel body of the first barrel 61;

[0065] A water outlet pipe 66, wherein the water outlet pipe 66 is fixedly connected to the wall of the water spray hole 65;

[0066] A hole plug 67 is fixedly connected to the inner surface of the water outlet pipe 66;

[0067] A second barrel 68, the second barrel 68 is disposed on one side of the first barrel 61, and the second barrel 68 is connected to the first barrel 61 through a water pipe;

[0068] By adopting the above technical solution, when the staff is performing blasting and drilling, the two telescopic mechanisms 5 and the motor 71 are started at the same time, and the output end of the telescopic mechanism 5 extends downward, and the output end of the telescopic mechanism 5 extends downward to drive the pressing plate 72 fixedly connected thereto to move downward. When the pressing plate 72 moves downward;

[0069] At the same time, the rotation shaft of the motor 71 rotates to drive the drill bit 1 to rotate, and the pressing plate 72 moves downward to drive the motor 71 fixed thereto to move downward, and the motor 71 moves downward to drive the drill bit 1 downward, so that the drill bit 1 moves downward and rotates at the same time to drill a hole in the ground surface;

[0070] At the same time, the pressure plate 72 drives the drill bit 1 to move downward and squeezes the pressure rod 62 fixedly connected to the lower surface. The downward movement of the pressure rod 62 drives the push plate 63 to move downward in the No. 1 bucket 61. Since the No. 1 bucket 61 is connected to the No. 2 bucket 68 through a water pipe, and the No. 2 bucket 68 is filled with water, the No. 1 bucket 61 is also filled with water. The push plate 63 squeezes the water in the No. 1 bucket 61 downward during the downward movement in the No. 1 bucket 61. Since the water spray hole 65 is opened at the bottom of the barrel body of the No. 1 bucket 61, the water in the No. 1 bucket 61 is squeezed out from the water spray port during the downward movement of the push plate 63. The water flows out through the water outlet pipe 66 at the water spray port, and then because the inner surface of the water outlet pipe 66 is fixedly connected with a perforated plug 67, the water flowing out of the water outlet pipe 66 is dispersed by the perforated plug 67 and then sprayed to one side of the drill bit 1, achieving an atomization effect, so that the dispersed water increases the spraying area, and the blown water falls due to gravity, and the blown water adheres to part of the dust in the air when falling, and the dust falls due to the increase in gravity, which greatly reduces the phenomenon of dust spreading outward when the drill bit 1 drills a hole, thereby reducing the damage caused by the dust spreading into the air to the staff;

[0071] When the pressing plate 72 moves downward to the end of the bracket 3 under the drive of the output end of the telescopic mechanism 5, the output end of the telescopic mechanism 5 is controlled to be extended upward again, and the output end of the telescopic mechanism 5 is extended upward to drive the pressing plate 72 to move upward and return to its original position. During the process of the pressing plate 72 returning upward, the motor 71 fixedly connected thereto is pulled upward, and the upward movement of the motor 71 drives the drill bit 1 to move upward and return to its original position;

[0072] In addition, when the pressure plate 72 moves upward, the pressure rod 62 is pulled upward, and the upward movement of the pressure rod 62 drives the push plate 63 to move upward in the No. 1 barrel 61. Since the outer surface of the push plate 63 is fixedly connected with the rubber coating 64, the push plate 63 and the rubber coating 64 cooperate with each other to form a piston and form a seal with the No. 1 barrel 61. Therefore, when the push plate 63 moves upward, the air pressure in the No. 1 barrel 61 is reduced, so that there is an air pressure difference between the No. 1 barrel 61 and the No. 2 barrel 68. Then, under the action of the air pressure difference, the water flow in the No. 2 barrel 68 enters the No. 1 barrel 61 to compensate for the water source in the No. 1 barrel 61, realize automatic water addition, and extend the service life of the dust reduction mechanism 6. When the drill bit 1 automatically returns to its position after one drilling is completed, the dust reduction mechanism 6 can automatically replenish the water source, which is convenient for the next drilling, thereby improving the practical usability of the dust reduction mechanism 6.

[0073] Therefore, when the telescopic mechanism 5 drives the pressing plate 72 to move downward and cooperates with the action of the motor 71 to drive the drill bit 1 to drill a hole, the pressing plate 72 squeezes out the water source in the first bucket 61 through the pressure rod 62 to produce an atomization effect, thereby reducing the diffusion of dust during drilling;

[0074] After the drilling is completed, the telescopic mechanism 5 drives the pressure plate 72 to move upward and drives the drill bit 1 to return upward, and the pressure rod 62 pulls the pull rod upward, so that an air pressure difference is generated in the first bucket 61, thereby compensating the water source in the first bucket 61 and realizing automatic water addition;

[0075] A one-way valve is set in the water pipe connecting bucket No. 1 61 and bucket No. 2 68. When the pressure plate 72 moves upward to generate an air pressure difference between bucket No. 1 61 and bucket No. 2 68, the one-way valve in the water pipe opens, and the water source in bucket No. 2 68 enters bucket No. 1 61 through the one-way valve in the water pipe. When the water source enters bucket No. 1 61 and the air pressure in bucket No. 1 61 and bucket No. 2 68 is equal, the one-way valve is closed. When the pressure plate 72 moves downward to squeeze out the water source in bucket No. 1 61, due to the presence of the one-way valve in the water pipe, the water flow in bucket No. 1 61 is prevented from flowing back into bucket No. 2 68, thereby ensuring the water output at the water outlet pipe 66, and then ensuring the dust reduction effect of the dust reduction mechanism 6.

[0076] As an embodiment of the present invention, the water outlet pipe 66 is inclined downward, and the diameter of the water outlet pipe 66 gradually decreases from the end close to the first barrel 61 to the end far away from the first barrel 61;

[0077] By adopting the above technical solution, since the dust moves upward and diffuses from the sharp end of the drill bit 1 when the drill bit 1 drills a hole, the water outlet pipe 66 is arranged to be inclined downward, so that after the water source in the first bucket 61 is squeezed and sprayed outward by the push plate 63, the sprayed water can be directed to the dust source to the greatest extent, further improving the dust reduction effect of the dust reduction mechanism 6;

[0078] Furthermore, by arranging the water outlet pipe 66 so that the diameter gradually decreases from the end close to bucket No. 1 61 to the end far away from bucket No. 1 61, the cross-sectional area of ​​the water flow gradually decreases during the process in which the water source in bucket No. 1 61 is squeezed by the push plate 63 and flows out of the water outlet pipe 66, thereby increasing the water pressure of the water flowing out of the water outlet pipe 66, further increasing the coverage area of ​​the water sprayed outward from the porous plug 67 in the water outlet pipe 66, and further improving the dust reduction effect.

[0079] As an embodiment of the present invention, the two side surfaces of the pressing plate 72 are slidably connected with the bracket 3 in a vertical direction;

[0080] By adopting the above technical solution, when the output end of the telescopic mechanism 5 drives the pressure plate 72 to move up and down, in order to ensure the structural stability of the coal mining equipment, the two side surfaces of the pressure plate 72 are arranged to be slidably connected with the bracket 3 in the vertical direction, so that the pressure plate 72 is supported by the bracket 3 to ensure the stability of the structure.

[0081] As an embodiment of the present invention, a dustproof cloth 8 is provided between the first barrel 61 and the second barrel 68, one end of the dustproof cloth 8 is fixedly connected to the lower surface of the pressing plate 72, and the dustproof cloth 8 is annularly surrounding the first barrel 61;

[0082] By adopting the above technical solution, a dustproof cloth 8 is arranged between the No. 1 bucket 61 and the No. 2 bucket 68, one end of the dustproof cloth 8 is fixedly connected to the lower surface of the pressure plate 72, and the dustproof cloth 8 is annularly surrounded by the No. 1 bucket, and it is ensured that the end of the dustproof cloth 8 away from the pressure plate 72 is always in contact with the upper surface of the base 2. When the motor 71 drives the drill bit 1 to rotate, more dust and gravel will be generated at the position where the drill bit 1 contacts the rock. These dust and gravel will be lifted and thrown out due to the high-speed rotation of the drill bit 1. However, the bottom plate 2 is in contact with the ground without a gap, so the raised dust The dust and gravel cannot escape through the gap between the base plate 2 and the ground, but can only escape from the gap between the base plate 2 and the drill bit 1 to the top of the base plate 2. In order to prevent the dust escaping from the top of the base plate 2 from continuing to spread, an annular dustproof cloth 8 is fixedly installed between the No. 1 barrel 61 and the No. 2 barrel 68. The dustproof cloth 8 is arranged around the drill bit 1 above the base plate 2, so that the dustproof cloth 8 and the base plate 2 and the pressure plate 72 fixedly connected to the upper end of the dustproof cloth 8 form an enclosing space around the drill bit 1, thereby reducing the further diffusion of the raised dust and gravel under the limitation of the above-mentioned enclosing space.

[0083] As an embodiment of the present invention, the lower surface of the pressing plate 72 is fixedly connected to the bottom of the pressing cylinder 9, the inner surface of the pressing cylinder 9 is fixedly connected to the spring 10, the end of the spring 10 away from the pressing cylinder 9 is fixedly connected to the limiting cylinder 11, and the outer surface of the pressing cylinder 9 is slidably connected to the inner surface of the limiting cylinder 11;

[0084] By adopting the above technical scheme, a large impact force is generated when the drill bit 1 drills downward, which can easily cause the entire device to vibrate and gradually shift. The shift of the device causes the drilling position to shift. Therefore, a pressure plate 72 is provided on the lower surface fixedly connected to the bottom of a pressure cylinder 9, and a spring 10 is fixedly connected to the inner surface of the pressure cylinder 9. The spring 10 is fixedly connected to a limiting cylinder 11 at one end away from the pressure cylinder 9. The outer surface of the pressure cylinder 9 is slidably connected to the inner surface of the limiting cylinder 11, so that the pressure plate 72 moves downward to drive the drill bit 1 to drill a hole while squeezing the pressure cylinder 9. The pressure cylinder 9 moves downward under the downward force to squeeze the spring 10. The elasticity of the spring 10 has a buffering effect on the drill bit 1 when drilling a hole, thereby reducing the vibration of the device due to the large impact force when the drill bit 1 is drilling a hole, thereby reducing the deviation of the device and improving the accuracy of the drilling position.

[0085] As an embodiment of the present invention, a plurality of conical protrusions 12 are fixedly connected to the outer surface of the drill bit 1;

[0086] By adopting the above technical solution, a plurality of conical protrusions 12 are fixedly connected to the outer surface of the drill bit 1. When the drill bit 1 rotates, the plurality of conical protrusions 12 are driven to rotate. The drill bit 1 is combined with the sharp ends of the plurality of conical protrusions 12 to reduce the contact area between the side of the drill bit 1 and the rock layer, thereby increasing the crushing strength of the drill bit 1, improving the crushing effect of the drill bit 1, shortening the crushing time, and improving work efficiency.

[0087] As an embodiment of the present invention, the sliding distance between the pressing cylinder 9 and the limiting cylinder 11 is greater than the movement stroke of the drill bit 1;

[0088] By adopting the above technical scheme, since the pressure cylinder 9 and the limit cylinder 11 are both made of hard materials, and the drill bit 1 needs to move downward under the squeezing of the pressure plate 72, and it is necessary to ensure that the entire downward movement stroke of the pressure plate 72 and the downward movement stroke of the drill bit 1 are not affected by the pressure cylinder 9 and the limit cylinder 11, the sliding distance of the pressure cylinder 9 and the limit cylinder 11 is set to be greater than the movement stroke of the drill bit 1, so that the pressure plate 72 can drive the drill bit 1 to move down to the end point normally, thereby ensuring that the existence of the pressure cylinder 9 and the limit cylinder 11 will not affect the normal operation of the pressure plate 72 and the drill bit 1.

[0089] As an embodiment of the present invention, the base 2 is provided with a through hole 13, the diameter of the through hole 13 is larger than the diameter of the drill bit 1; the drill bit 1 is provided with a spiral groove; the portion of the spiral groove located at the front end of the drill bit 1 is located inside the drill bit 1, and the spiral groove passes through the conical protrusion 12;

[0090] By adopting the above technical solution, a through hole 13 is opened on the base 2, and the diameter of the through hole 13 is larger than the diameter of the drill bit 1, so that the drill bit 1 will not be affected by the base 2 when it moves down and up, thereby ensuring the normal operation of the drill bit 1; at the same time, a spiral groove is opened on the drill bit 1, and a part of the water sprayed out of the water outlet pipe 66 enters the spiral groove, so that the water flows along the spiral groove to the conical protrusion 12 at the top of the drill bit 1, moistening the land or rock, thereby increasing the drilling effect of the drill bit.

[0091] Working principle: When the staff is blasting and drilling, the two telescopic mechanisms 5 and the motor 71 are started at the same time, and the output end of the telescopic mechanism 5 extends downward, and the output end of the telescopic mechanism 5 extends downward to drive the pressing plate 72 fixedly connected thereto to move downward. When the pressing plate 72 moves downward;

[0092] At the same time, the rotation shaft of the motor 71 rotates to drive the drill bit 1 to rotate, and the pressing plate 72 moves downward to drive the motor 71 fixed thereto to move downward, and the motor 71 moves downward to drive the drill bit 1 downward, so that the drill bit 1 moves downward and rotates at the same time to drill a hole in the ground surface;

[0093] At the same time, the pressure plate 72 drives the drill bit 1 to move downward and squeezes the pressure rod 62 fixedly connected to the lower surface. The downward movement of the pressure rod 62 drives the push plate 63 to move downward in the No. 1 bucket 61. Since the No. 1 bucket 61 is connected to the No. 2 bucket 68 through a water pipe, and the No. 2 bucket 68 is filled with water, the No. 1 bucket 61 is also filled with water. The push plate 63 squeezes the water in the No. 1 bucket 61 downward during the downward movement in the No. 1 bucket 61. Since the water spray hole 65 is opened at the bottom of the barrel body of the No. 1 bucket 61, the water in the No. 1 bucket 61 is squeezed out from the water spray port during the downward movement of the push plate 63. The water flows out through the water outlet pipe 66 at the water spray port, and then because the inner surface of the water outlet pipe 66 is fixedly connected with a perforated plug 67, the water flowing out of the water outlet pipe 66 is dispersed by the perforated plug 67 and then sprayed to one side of the drill bit 1, achieving an atomization effect, so that the dispersed water increases the spraying area, and the blown water falls due to gravity, and the blown water adheres to part of the dust in the air when falling, and the dust falls due to the increase in gravity, which greatly reduces the phenomenon of dust spreading outward when the drill bit 1 drills a hole, thereby reducing the damage caused by the dust spreading into the air to the staff;

[0094] When the pressing plate 72 moves downward to the end of the bracket 3 under the drive of the output end of the telescopic mechanism 5, the output end of the telescopic mechanism 5 is controlled to be extended upward again, and the output end of the telescopic mechanism 5 is extended upward to drive the pressing plate 72 to move upward and return to its original position. During the process of the pressing plate 72 returning upward, the motor 71 fixedly connected thereto is pulled upward, and the upward movement of the motor 71 drives the drill bit 1 to move upward and return to its original position;

[0095] In addition, when the pressure plate 72 moves upward, the pressure rod 62 is pulled upward, and the upward movement of the pressure rod 62 drives the push plate 63 to move upward in the No. 1 barrel 61. Since the outer surface of the push plate 63 is fixedly connected with the rubber coating 64, the push plate 63 and the rubber coating 64 cooperate with each other to form a piston and form a seal with the No. 1 barrel 61. Therefore, when the push plate 63 moves upward, the air pressure in the No. 1 barrel 61 is reduced, so that there is an air pressure difference between the No. 1 barrel 61 and the No. 2 barrel 68. Then, under the action of the air pressure difference, the water flow in the No. 2 barrel 68 enters the No. 1 barrel 61 to compensate for the water source in the No. 1 barrel 61, realize automatic water addition, and extend the service life of the dust reduction mechanism 6. When the drill bit 1 automatically returns to its position after one drilling is completed, the dust reduction mechanism 6 can automatically replenish the water source, which is convenient for the next drilling, thereby improving the practical usability of the dust reduction mechanism 6.

[0096] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A coal mining device, comprising a drill bit (1), characterized in that: Also includes: A base (2), wherein the base (2) is arranged outside the drill bit (1); A bracket (3), wherein the bracket (3) is arranged on both sides of the base (2) and one end of the bracket (3) is fixedly connected to the base (2); a mounting plate (4), wherein the mounting plate (4) is fixedly connected to one end of the bracket (3) away from the base (2); a telescopic mechanism (5), wherein two telescopic mechanisms (5) are symmetrically fixedly connected to the lower surface of the mounting plate (4); a dust reduction mechanism (6), wherein the dust reduction mechanism (6) is located below the telescopic mechanism (5) and is arranged on both sides of the drill bit (1) and is used to achieve dust reduction when the drill bit (1) is drilling a hole; and a transmission mechanism (7), wherein the transmission mechanism (7) is arranged above the drill bit (1) and is used to provide power for the drill bit (1) to drill a hole; The transmission mechanism (7) comprises: a motor (71), the motor (71) being arranged above the drill bit; a pressure plate (72), the upper surface of the pressure plate (72) being fixedly connected to the output end of the telescopic mechanism (5), the upper surface of the pressure plate (72) being fixedly connected to the motor (71), the rotating shaft of the motor (71) penetrating downward through the pressure plate (72); a mounting rod (73), the mounting rod (73) being fixedly connected to the rotating shaft of the motor (71), the end of the mounting rod (73) away from the motor (71) being fixedly connected to the center of the drill bit (1); The dust reduction mechanism (6) comprises: a No. 1 bucket (61), the No. 1 bucket (61) is symmetrically arranged below the pressure plate (72), and the lower surface of the No. 1 bucket (61) is fixedly connected to the upper surface of the base (2); a pressure rod (62), the pressure rod (62) is symmetrically arranged below the pressure plate (72), one end of the pressure rod (62) is fixedly connected to the lower surface of the pressure plate (72), and one end of the pressure rod (62) away from the pressure plate (72) passes through the No. 1 bucket (61) downward and is slidably connected to the upper surface of the No. 1 bucket (61); and a push plate (63), the push plate (63) is located in the No. 1 bucket (61), and the push plate (63) and the pressure rod ( 62) is fixedly connected to one end of the first barrel (61); a rubber coating (64), the rubber coating (64) is fixedly connected to the outer surface of the push plate (63); a water spray hole (65), the water spray hole (65) is opened at the bottom of the barrel body of the first barrel (61); a water outlet pipe (66), the water outlet pipe (66) is fixedly connected to the hole wall of the water spray hole (65); a perforated plug (67), the perforated plug (67) is fixedly connected to the inner surface of the water outlet pipe (66); a second barrel (68), the second barrel (68) is arranged on one side of the first barrel (61), and the second barrel (68) and the first barrel (61) are connected through a water pipe.

2. A coal mining equipment according to claim 1, characterized in that: The water outlet pipe (66) is inclined downward, and the diameter of the water outlet pipe (66) gradually decreases from the end close to the first barrel (61) to the end far away from the first barrel (61).

3. A coal mining equipment according to claim 1, characterized in that: The two side surfaces of the pressing plate (72) are slidably connected to the bracket (3) in a vertical direction.

4. A coal mining equipment according to claim 1, characterized in that: A dustproof cloth (8) is arranged between the first barrel (61) and the second barrel (68), one end of the dustproof cloth (8) is fixedly connected to the lower surface of the pressing plate (72), and the dustproof cloth (8) is annularly surrounding the first barrel (61).

5. A coal mining equipment according to claim 1, characterized in that: The lower surface of the pressure plate (72) is fixedly connected to the bottom of the pressure cylinder (9), the inner surface of the pressure cylinder (9) is fixedly connected to a spring (10), one end of the spring (10) away from the pressure cylinder (9) is fixedly connected to a limiting cylinder (11), and the outer surface of the pressure cylinder (9) is slidably connected to the inner surface of the limiting cylinder (11).

6. A coal mining equipment according to claim 1, characterized in that: A plurality of conical protrusions (12) are fixedly connected to the outer surface of the drill bit (1).

7. A coal mining equipment according to claim 5, characterized in that: The sliding distance between the pressing cylinder (9) and the limiting cylinder (11) is greater than the movement stroke of the drill bit (1).

8. A coal mining equipment according to claim 1, characterized in that: The base (2) is provided with a through hole (13), the diameter of the through hole (13) is larger than the diameter of the drill bit (1); and the drill bit (1) is provided with a spiral groove.

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