An integrated equipment for assessing and preventing rockbursts in coal mines

Abstract

This invention relates to the field of coal mining technology, specifically to an integrated equipment for assessing and preventing coal mine rockburst. It includes a base, with a driving component movably mounted on the top of the base. The driving component includes a propulsion vertical plate, and an airtight transition cover is fixedly installed on the left side of the propulsion vertical plate. A drilling component is rotatably mounted inside the airtight transition cover. During drilling, the drilling component drives the side-mounted drilling unit to operate simultaneously, boring the inner wall of the drilled hole. This significantly improves drilling efficiency. Furthermore, the boring cutter in the side-mounted drilling unit applies an impact effect to the hole wall during boring, facilitating drilling into hard rock strata and greatly enhancing the device's drilling performance. Simultaneously, because the device simultaneously borings the hole wall during drilling, the diameter of the drilled rock hole increases, allowing for the extraction of more coal dust at the same drilling depth.

Description

Technical Field

[0001] This invention relates to the field of coal mining technology, specifically to an integrated equipment for assessing and preventing coal mine rockburst. Background Technology

[0002] Rockburst, as a special form of mine pressure manifestation, has become a major hazard in coal mining, especially in deep mines. Drilling stress relief refers to drilling in the rockburst hazard zone of a coal seam to reduce stress concentration in the coal body—a localized rockburst prevention method. After conventional drilling stress relief operations, it is necessary to evaluate the effectiveness of the coal seam drilling stress relief. The primary evaluation method is based on the amount of coal dust extracted from the drill cuttings, supplemented by other evaluation methods such as stress change, electromagnetic radiation index, and microseismic index. The drill cuttings method, which involves drilling small-diameter holes in the coal seam and judging the rockburst hazard based on the amount of coal dust extracted at different depths and its variation, as well as related dynamic phenomena, is a reliable method.

[0003] According to the integrated equipment for assessing and preventing coal mine rockbursts disclosed in Chinese Patent Application Publication No. CN118008134A, the device uses an external and internal suction port to simultaneously draw coal during drilling with an auger. This effectively reduces the overflow and loss rate of coal dust and the residual rate of coal dust on the surface of the auger. By achieving the above technical effects, the collection and weighing accuracy of coal dust is effectively improved, thereby enhancing the assessment effect of preventing and preventing coal mine rockbursts. However, the device still has shortcomings. The drilling efficiency is not high when encountering hard rock strata, and the hole diameter is relatively small. Therefore, when the auger drills shallowly, the amount of coal dust obtained is relatively small. Summary of the Invention

[0004] Therefore, the present invention provides an integrated equipment for assessing and preventing rockbursts in coal mines to solve the above-mentioned problems.

[0005] The present invention provides the following technical solution: an integrated equipment for assessing and preventing rockburst in coal mines, including a base, with four square vertical tubes fixedly installed at the four corners of the top of the base, and two square horizontal bars distributed on the left and right sides of the top of the base. The square horizontal bars are fixedly installed between the two square vertical tubes located at the front and rear, and a driving component is movably provided on the top of the base.

[0006] The driving component includes a vertical propulsion plate. An airtight adapter is fixedly installed on the left side of the vertical propulsion plate. A drilling component is rotatably installed inside the airtight adapter. The drilling component includes a drilling cylinder rotatably installed on the inner wall of the airtight adapter. Multiple clearance holes and multiple suction holes are formed on the outer wall of the drilling cylinder. An inner sleeve is fixedly installed in the middle of the left wall of the drilling cylinder, penetrating the right side of the drilling cylinder. Multiple side drilling units are equidistantly distributed inside the drilling cylinder. Each side drilling unit includes multiple external splined shafts distributed at equal angles. The external splined shafts are rotatably installed on the outer wall of the inner sleeve, and the external splined shafts movably penetrate both the inner and outer walls of the inner sleeve. A boring tool holder is movably installed inside the clearance hole. The position of the boring tool holder corresponds to the position of the external splined shaft. A boring head is fixedly installed on the side away from the external spline shaft. A limiting torsion shaft is fixedly installed in the middle of the side of the boring tool holder near the external spline shaft. An internal spline insertion hole is opened at the end of the limiting torsion shaft near the external spline shaft. The inner wall of the internal spline insertion hole is slidably connected to the outer wall of the external spline shaft. A driven bevel gear is fixedly installed at the end of the external spline shaft away from the limiting torsion shaft. A cylindrical cam is fixedly installed at the end of the outer wall of the limiting torsion shaft away from the boring head. Multiple fixed discs are fixedly installed on the outer wall of the inner sleeve at equal distances. Multiple cam pins are fixedly installed on the right side of each fixed disc at equal angles. The position of the cam pins corresponds to the position of the cylindrical cam, and the outer wall of the cam pin is slidably connected to the cam groove wall of the cylindrical cam. Multiple adsorption components are provided inside the drilling cylinder at equal angles.

[0007] As a preferred embodiment of the present invention, the driving component further includes a power motor, which is fixedly installed on the right side of the propulsion vertical plate. The output shaft of the power motor movably passes through the propulsion vertical plate, and a power shaft is fixedly connected to the end of the output shaft of the power motor. The power shaft extends into the interior of the inner sleeve, and the left end of the power shaft is rotatably connected to the left wall of the drilling barrel. A plurality of active bevel gears are fixedly installed on the outer wall of the power shaft, which are distributed at equal intervals on the left and right sides. The positions of the active bevel gears correspond to the positions of the driven bevel gears, and the active bevel gears mesh with the driven bevel gears.

[0008] As a preferred embodiment of the present invention, a sun gear is fixedly installed on the outer wall of the power shaft, and multiple planetary supports distributed at equal angles are fixedly installed on the left side of the propulsion vertical plate. Planetary gears are rotatably installed on the outer wall of the planetary supports, and all planetary gears mesh with the sun gear. A fixing flange is fixedly installed on the right end of the outer wall of the inner tube sleeve, and a large gear ring is fixedly installed on the right side of the fixing flange. The large gear ring is located around the planetary gears and meshes with the planetary gears.

[0009] As a preferred embodiment of the present invention, guide holes are provided at the four corners of the left side of the pusher plate, and a guide rod is slidably installed on the inner wall of each guide hole. The guide rod is fixedly installed between the two square vertical tubes located in the left and right directions. An internal thread seat is fixedly installed on the top of the pusher plate, and a feed screw is connected to the internal thread of the internal thread seat. The feed screw is rotatably installed between the two square horizontal bars on the left and right sides.

[0010] As a preferred embodiment of the present invention, an adsorption shell is fixedly installed on the top of the base, the adsorption shell is located at the bottom of the drilling cylinder, a collection drawer is slidably installed inside the adsorption shell, a negative pressure suction pipe is fixedly installed on the top of the adsorption shell and is connected to the inside of the adsorption shell, a negative pressure fan is fixedly installed on the top of the adsorption shell and the suction end of the negative pressure fan is connected to the inside of the adsorption shell, a vent hole is opened through the bottom of the airtight transfer cover, an air nozzle is fixedly installed on the bottom of the airtight transfer cover and is located outside the opening of the vent hole, and the end of the negative pressure suction pipe away from the adsorption shell is fixedly connected to the bottom of the air nozzle.

[0011] As a preferred embodiment of the present invention, the adsorption component includes an adsorption tile groove fixedly installed on the inner wall of the drilling tube. The adsorption component also includes two left-right distributed push rods. The push rods movably penetrate the inner tube sleeve and the adsorption tile groove, and the outer wall of the push rod is slidably connected to the through hole of the inner tube sleeve. The push rods penetrate the inner wall and the outer wall of the inner tube sleeve. The ends of the two push rods away from the inner tube sleeve are connected to a connecting plate. The connecting plate is located inside the adsorption tile groove. A plurality of sealing blocks are fixedly installed on the side of the connecting plate away from the push rods, and the positions of the plurality of sealing blocks correspond one-to-one with the positions of the plurality of adsorption holes. Two left-right distributed push cams are fixedly installed on the outer wall of the power shaft, and the positions of the push cams correspond to the positions of the push rods.

[0012] As a preferred embodiment of the present invention, a guide rod is fixedly installed on the middle of the side of the sealing block away from the top rod, and the diameter of the guide rod is smaller than the diameter of the adsorption hole.

[0013] As a preferred embodiment of the present invention, a return spring is sleeved around the periphery of each top rod, and the return spring is fixedly installed between the adsorption tile groove and the connecting plate.

[0014] As a preferred embodiment of the present invention, a plurality of air guide holes are provided through the right side of the drilling cylinder, and the positions of the plurality of air guide holes correspond one-to-one with the positions of the plurality of adsorption tile grooves. A plurality of air guide pipes are fixedly installed on the right side of the drilling cylinder, and the air guide pipes are located outside the openings of the air guide holes and inside the airtight transition cover.

[0015] As a preferred embodiment of the present invention, a drill bit is fixedly installed at the left end of the drilling cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In this invention, the drilling component drives the side drilling unit to operate together during the drilling process, and performs boring operations on the inner wall of the drilled hole, which greatly improves the drilling efficiency. In addition, the boring cutter in the side drilling unit also applies an impact effect to the hole wall during the boring process, which is convenient for drilling some hard rock layers and greatly improves the drilling performance of the device. At the same time, since the device simultaneously borings the hole wall during the drilling process, the diameter of the drilled rock hole becomes larger, so that the device can obtain more coal powder under the premise of drilling to the same depth.

[0018] 2. In this invention, the power shaft rotates, driving the push cam to rotate as well. During the rotation of the push cam, its protruding part pushes the push rod and connecting plate towards the inner wall of the drilling cylinder, causing the return spring to be stretched and stored. The movement of the connecting plate drives multiple sealing blocks and multiple guiding rods to move together, sealing the adsorption holes. Under the continuous rotation of the push cam and the elastic return action of the return spring, the push rod drives the connecting plate, guiding rods, and sealing blocks to swing back and forth, thereby intermittently sealing the adsorption holes. This allows the coal powder sucked into the adsorption trough to be sucked into the collection drawer as much as possible, thus preventing the coal powder from accumulating inside the adsorption trough. Furthermore, when the sealing block drives the guiding rod towards the adsorption hole, the sealing block inserts into the adsorption hole, pushing out some lumpy coal slag adsorbed inside the adsorption hole, preventing the adsorption hole from being blocked by coal slag, and enabling the device to operate stably. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the driving component and the drilling component in this invention;

[0021] Figure 3 This is a partial cross-sectional view of the drilling cylinder in this invention.

[0022] Figure 4 In this invention Figure 3 A magnified structural diagram of part A;

[0023] Figure 5 This is a schematic diagram of the front half-section structure of the drilling cylinder in this invention;

[0024] Figure 6 This is a cross-sectional structural schematic diagram of the drilling cylinder and the airtight transition cover in this invention;

[0025] Figure 7 In this invention Figure 6 A schematic diagram of the enlarged structure of part B;

[0026] Figure 8 This is a schematic diagram of the side drilling unit in this invention;

[0027] Figure 9 In this invention Figure 8 A magnified structural diagram of section C;

[0028] Figure 10 This is a schematic diagram of the unfolded structure of the external spline insert shaft and the internal spline insert hole in this invention;

[0029] Figure 11 This is a schematic diagram of the adsorption component in this invention;

[0030] Figure 12 This is a schematic diagram of the structure of the drilling cylinder and inner sleeve in this invention.

[0031] In the diagram: 1. Base; 2. Square vertical tube; 3. Square horizontal bar; 4. Drive component; 401. Propulsion vertical plate; 402. Airtight adapter cover; 4020. Vent hole; 4021. Air nozzle; 403. Power motor; 404. Power shaft; 405. Drive bevel gear; 406. Push cam; 407. Sun gear; 408. Planetary support; 409. Planetary gear; 4010. Fixed flange; 4011. Large gear ring; 4013. Internal thread seat; 4014. Feed screw; 4015. Guide hole; 4016. Polished rod; 501. Drill barrel; 5011. Clearance hole; 5012. Suction... 5013, Air guide hole; 5014, Air guide tube; 502, Inner sleeve; 503, External spline insert shaft; 5031, Boring tool holder; 5032, Boring tool head; 5033, Torsion limiting shaft; 5034, Internal spline insert hole; 5035, Driven bevel gear; 5036, Cylindrical cam; 5037, Fixed disc; 5038, Cam pin; 601, Adsorption tile groove; 602, Top rod; 603, Connecting plate; 604, Return spring; 605, Sealing block; 606, Guide rod; 7, Drill bit; 801, Adsorption housing; 802, Collection drawer; 803, Negative pressure suction tube; 804, Negative pressure fan. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see the appendix Figures 1-12 The technical solution provided by the present invention specifically includes the following embodiments:

[0034] Example 1:

[0035] An integrated equipment for assessing and preventing rockburst in coal mines includes a base 1. Four square vertical tubes 2 are fixedly installed at the four corners of the top of the base 1. Two square horizontal bars 3 are distributed on the left and right sides of the top of the base 1. The square horizontal bars 3 are fixedly installed between the two square vertical tubes 2 located at the front and rear. A driving component 4 is movably installed on the top of the base 1.

[0036] The driving component 4 includes a vertical propulsion plate 401. An airtight adapter 402 is fixedly installed on the left side of the vertical propulsion plate 401. A drilling component is rotatably installed inside the airtight adapter 402. The drilling component includes a drilling cylinder 501 rotatably mounted on the inner wall of the airtight adapter 402. Multiple clearance holes 5011 and multiple suction holes 5012 are provided on the outer wall of the drilling cylinder 501. An inner sleeve 502 is fixedly installed in the middle of the left wall of the drilling cylinder 501, penetrating the right side of the drilling cylinder 501. The interior is equipped with multiple side drilling units evenly distributed on the left and right sides. Each side drilling unit includes multiple external splined insert shafts 503 distributed at equal angles. The external splined insert shafts 503 are rotatably mounted on the outer wall of the inner sleeve 502, and the external splined insert shafts 503 movably penetrate the inner and outer walls of the inner sleeve 502. A boring tool holder 5031 is movably mounted inside the clearance hole 5011. The position of the boring tool holder 5031 corresponds to the position of the external splined insert shafts 503. A boring tool is fixedly mounted on the side of the boring tool holder 5031 away from the external splined insert shafts 503. A limiting torsion bar 5033 is fixedly installed on the middle of the side of the boring tool holder 5031 near the external spline shaft 503. An internal spline hole 5034 is formed at the end of the limiting torsion bar 503 near the external spline shaft 503. The inner wall of the internal spline hole 5034 is slidably connected to the outer wall of the external spline shaft 503. A driven bevel gear 5035 is fixedly installed at the end of the external spline shaft 503 away from the limiting torsion bar 5033. A [missing information - likely a gear or component] is fixedly installed at the end of the external spline shaft 503 away from the boring tool head 5032. A cylindrical cam 5036 has multiple fixed discs 5037s that are equidistantly distributed on the outer wall of the inner sleeve 502. Multiple cam pins 5038s that are equidistantly distributed on the right side of each fixed disc 5037 are fixedly installed. The positions of the cam pins 5038s correspond to the positions of the cylindrical cam 5036, and the outer wall of the cam pins 5038 is slidably connected to the cam groove wall of the cylindrical cam 5036. A drill bit 7 is fixedly installed at the left end of the drilling cylinder 501. Multiple adsorption components that are equidistantly distributed inside the drilling cylinder 501 are provided.

[0037] The drive component 4 also includes a power motor 403, which is fixedly installed on the right side of the push vertical plate 401. The output shaft of the power motor 403 movably passes through the push vertical plate 401, and the end of the output shaft of the power motor 403 is fixedly connected to a power shaft 404. The power shaft 404 extends into the interior of the inner sleeve 502, and the left end of the power shaft 404 is rotatably connected to the left wall of the drilling barrel 501. Multiple active bevel gears 405 are fixedly installed on the outer wall of the power shaft 404, which are distributed at equal distances on the left and right. The positions of the active bevel gears 405 correspond to the positions of the driven bevel gears 5035, and the active bevel gears 405 and the driven bevel gears 5035 mesh with each other.

[0038] A sun gear 407 is fixedly installed on the outer wall of the power shaft 404. Multiple planetary supports 408 distributed at equal angles are fixedly installed on the left side of the propulsion vertical plate 401. Planetary gears 409 are rotatably installed on the outer wall of the planetary supports 408. All planetary gears 409 mesh with the sun gear 407. A fixed flange 4010 is fixedly installed on the right end of the outer wall of the inner sleeve 502. A large gear ring 4011 is fixedly installed on the right side of the fixed flange 4010. The large gear ring 4011 is located around the planetary gears 409 and meshes with the planetary gears 409.

[0039] Guide holes 4015 are provided at the four corners of the left side of the pusher plate 401. A smooth rod 4016 is slidably installed on the inner wall of the guide hole 4015. The smooth rod 4016 is fixedly installed between the two square vertical tubes 2 located in the left and right directions. An internal thread seat 4013 is fixedly installed on the top of the pusher plate 401. The internal thread of the internal thread seat 4013 is connected to the feed screw 4014. The feed screw 4014 is rotatably installed between the two square horizontal bars 3 on the left and right sides.

[0040] In this embodiment, the output shaft of the power motor 403 drives the power shaft 404 and the sun gear 407 to rotate. The rotation of the sun gear 407 drives the large gear ring 4011 and the fixed flange 4010 to rotate through multiple planetary gears 409. The rotation of the fixed flange 4010 drives the inner sleeve 502 connected to it to rotate. The rotation of the inner sleeve 502 drives the drilling barrel 501 to rotate together. During this process, the rotation of the feed screw 4014 generates a helical thrust, which pushes the internal thread seat 4013 to connect to the feed screw 4014. As the vertical propulsion plate 401 moves to the left, the sliding connection between multiple guide holes 4015 and multiple guide rods 4016 during this movement makes the movement of the vertical propulsion plate 401 more stable. The leftward movement of the vertical propulsion plate 401 drives the drilling cylinder 501 and the moving drill bit 7 to move to the left together to perform drilling operations. At the same time, the rotation of the power shaft 404 drives multiple driving bevel gears 405 to rotate. The rotation of the driving bevel gears 405 drives the external spline insert shaft through the driven bevel gear 5035. The rotation of shaft 503, via the torsion limiting shaft 5033, drives the boring tool holder 5031 and the boring head 5032 to rotate, performing boring operations on the inner wall of the hole to be drilled. This greatly improves drilling efficiency. Furthermore, during the rotation of the torsion limiting shaft 5033, it also drives the connected cylindrical cam 5036 to rotate. Simultaneously, it is affected by the cam groove and cam pin 5038 of the cylindrical cam 5036, causing the torsion limiting shaft 5033 to rotate along with the external spline shaft 503. It will also reciprocate along the axial direction of the external spline insert shaft 503, further driving the boring tool holder 5031 and the boring tool head 5032 to swing together. This allows the boring tool head 5032 to exert an impact effect on the hole wall during boring, making it easier to drill through some hard rock layers and greatly improving the drilling performance of the device. At the same time, because the device simultaneously borings the hole wall during the drilling process, the diameter of the drilled rock hole becomes larger, so that the device can obtain more coal powder under the premise of drilling to the same depth.

[0041] Example 2:

[0042] An adsorption housing 801 is fixedly installed on the top of the base 1. The adsorption housing 801 is located at the bottom of the drilling cylinder 501. A collection drawer 802 is slidably installed inside the adsorption housing 801. A negative pressure suction pipe 803 is fixedly installed on the top of the adsorption housing 801. The negative pressure suction pipe 803 is connected to the inside of the adsorption housing 801. A negative pressure fan 804 is fixedly installed on the top of the adsorption housing 801. The suction end of the negative pressure fan 804 is connected to the inside of the adsorption housing 801. A vent hole 4020 is opened through the bottom of the airtight adapter cover 402. An air nozzle 4021 is fixedly installed on the bottom of the airtight adapter cover 402. The air nozzle 4021 is located outside the opening of the vent hole 4020. The end of the negative pressure suction pipe 803 away from the adsorption housing 801 is fixedly connected to the bottom of the air nozzle 4021.

[0043] The adsorption component includes an adsorption tile groove 601 fixedly installed on the inner wall of the drilling barrel 501. Multiple air guide holes 5013 are opened through the right side of the drilling barrel 501. The positions of the multiple air guide holes 5013 correspond one-to-one with the positions of the multiple adsorption tile grooves 601. Multiple air guide pipes 5014 are fixedly installed on the right side of the drilling barrel 501. The air guide pipes 5014 are located outside the opening of the air guide holes 5013 and inside the airtight adapter cover 402.

[0044] In this embodiment, the negative pressure fan 804 is activated to generate negative pressure suction, which causes a negative pressure effect inside the adsorption housing 801. This negative pressure is then transmitted to the inside of the airtight transfer cover 402 through the negative pressure suction pipe 803, and then to the inside of the adsorption tile 601 through multiple air guide pipes 5014 and air guide holes 5013. This causes a negative pressure inside the adsorption tile 601, thereby drawing the coal dust generated during drilling into the inside of the adsorption tile 601 through the adsorption holes 5012. Subsequently, the coal dust is drawn into the collection drawer 802 through the air guide holes 5013, air guide pipes 5014, airtight transfer cover 402, and negative pressure suction pipe 803 for collection. After collection, the inspector can open the collection drawer 802 to remove the collected coal dust for testing and evaluation.

[0045] Example 3:

[0046] The adsorption component also includes two left-right distributed push rods 602, which movably pass through the inner tube sleeve 502 and the adsorption tile groove 601. The outer wall of the push rod 602 is slidably connected to the through hole of the inner tube sleeve 502. The push rod 602 passes through the inner wall and the outer wall of the inner tube sleeve 502. The ends of the two push rods 602 away from the inner tube sleeve 502 are connected to a connecting plate 603. The connecting plate 603 is located inside the adsorption tile groove 601. Multiple sealing blocks 605 are fixedly installed on the side of the connecting plate 603 away from the push rods 602. The positions of the multiple sealing blocks 605 correspond one-to-one with the positions of the multiple adsorption holes 5012. Two left-right distributed push cams 406 are fixedly installed on the outer wall of the power shaft 404. The positions of the push cams 406 correspond to the positions of the push rods 602.

[0047] A guide rod 606 is fixedly installed on the middle of the side of the sealing block 605 away from the top rod 602. The diameter of the guide rod 606 is smaller than the diameter of the adsorption hole 5012.

[0048] In this embodiment, the power shaft 404 rotates, driving the push cam 406 to rotate as well. During rotation, the protruding part of the push cam 406 pushes the push rod 602 and the connecting plate 603 towards the inner wall of the drilling cylinder 501, causing the return spring 604 to be stretched and stored. The movement of the connecting plate 603 drives multiple sealing blocks 605 and multiple guide rods 606 to move together, sealing the adsorption hole 5012. Under the continuous rotation of the push cam 406 and the elastic return action of the return spring 604, the push rod 602 drives the connecting plate... The guide rod 606 and the blocking block 605 reciprocate to block the adsorption hole 5012 intermittently, so that the coal powder sucked into the adsorption trough 601 is sucked into the collection tray 802 as much as possible, thereby avoiding the accumulation of coal powder inside the adsorption trough 601. When the blocking block 605 drives the guide rod 606 to move closer to the adsorption hole 5012, the blocking block 605 inserts into the adsorption hole 5012, which can push out some lumpy coal slag adsorbed inside the adsorption hole 5012, preventing the adsorption hole 5012 from being blocked by coal slag, so that the device can operate stably.

[0049] This integrated equipment for assessing and preventing rockburst in coal mines operates by starting a power motor 403. The output shaft of the power motor 403 drives the power shaft 404 and the sun gear 407 to rotate. The rotation of the sun gear 407, through multiple planetary gears 409, drives the large gear ring 4011 and the fixed flange 4010 to rotate. The rotation of the fixed flange 4010 drives the inner sleeve 502 connected to it to rotate. The rotation of the inner sleeve 502 drives the drilling barrel 501 to rotate together. During this process, the feed screw 40 is rotated. 14 generates a helical thrust, pushing the internal thread seat 4013 and the propulsion vertical plate 401 to move to the left. During the leftward movement of the propulsion vertical plate 401, the sliding connection between multiple guide holes 4015 and multiple polished rods 4016 makes the movement of the propulsion vertical plate 401 more stable. The leftward movement of the propulsion vertical plate 401 drives the drilling barrel 501 and the moving drill bit 7 to move to the left together to perform drilling operations. At the same time, the rotation of the power shaft 404 drives multiple active bevel gears 405 to rotate. The rotation of the active bevel gears 405 drives the driven bevel gears to rotate. The bevel gear 5035 drives the external spline insert shaft 503 to rotate. The rotation of the external spline insert shaft 503, via the torsion-limiting shaft 5033, drives the boring tool holder 5031 and the boring head 5032 to rotate, performing boring operations on the inner wall of the drilled hole. This greatly improves drilling efficiency. Furthermore, during the rotation of the torsion-limiting shaft 5033, it also drives the connected cylindrical cam 5036 to rotate together. Simultaneously, it is affected by the cam groove and cam pin 5038 of the cylindrical cam 5036, causing the torsion-limiting shaft 5033 to rotate with the external spline insert shaft 5035... During rotation, the boring tool holder 5031 and the boring tool head 5032 will swing back and forth along the axial direction of the external spline insert shaft 503, which will further drive the boring tool holder 5031 and the boring tool head 5032 to swing together. This will cause the boring tool head 5032 to exert an impact effect on the hole wall during boring, which will facilitate drilling of some hard rock layers and greatly improve the drilling performance of the device. At the same time, because the device borings the hole wall simultaneously during the drilling process, the diameter of the drilled rock hole will be larger. Thus, under the premise of drilling to the same depth, the device can obtain more coal powder.

[0050] At the same time, the negative pressure fan 804 starts to generate negative pressure suction, which causes negative pressure to be generated inside the adsorption housing 801. This negative pressure is then transmitted to the inside of the airtight transfer cover 402 through the negative pressure suction pipe 803, and then to the inside of the adsorption tile 601 through multiple air guide pipes 5014 and air guide holes 5013. This causes negative pressure to be generated inside the adsorption tile 601, thereby drawing the coal powder generated during drilling into the inside of the adsorption tile 601 through the adsorption hole 5012. Subsequently, the coal powder is drawn into the collection drawer 802 through the air guide hole 5013, air guide pipe 5014, airtight transfer cover 402, and negative pressure suction pipe 803 for collection. After collection, the inspector can open the collection drawer 802 to take out the collected coal powder for testing and evaluation.

[0051] During rotation, the power shaft 404 also drives the push cam 406 to rotate. As the push cam 406 rotates, its protruding portion pushes the push rod 602 and connecting plate 603 towards the inner wall of the drilling cylinder 501. This causes the return spring 604 to be stretched and stored. The movement of the connecting plate 603 drives multiple sealing blocks 605 and multiple guide rods 606 to move together, sealing the adsorption hole 5012. Under the continuous rotation of the push cam 406 and the elastic return action of the return spring 604, the push rod 602 drives the connecting plate 603 and guide rod 606 towards the inner wall of the drilling cylinder 501. The guide rod 606 and the sealing block 605 reciprocate to block the adsorption hole 5012 intermittently, so that the coal powder sucked into the adsorption trough 601 is sucked into the collection tray 802 as much as possible, thereby avoiding the accumulation of coal powder inside the adsorption trough 601. When the sealing block 605 drives the guide rod 606 to move closer to the adsorption hole 5012, the sealing block 605 inserts into the adsorption hole 5012, which can push out some lumpy coal slag adsorbed inside the adsorption hole 5012, preventing the adsorption hole 5012 from being blocked by coal slag, so that the device can operate stably.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated equipment for assessing and preventing rockbursts in coal mines, characterized in that: Includes a base (1), with square vertical tubes (2) fixedly installed at the four corners of the top of the base (1), and two square horizontal bars (3) distributed on the left and right sides at the top of the base (1). The square horizontal bars (3) are fixedly installed between the two square vertical tubes (2) located at the front and back. A driving component (4) is movably provided at the top of the base (1). The driving component (4) includes a thrust vertical plate (401). An airtight adapter (402) is fixedly installed on the left side of the thrust vertical plate (401). A drilling component is rotatably installed inside the airtight adapter (402). The drilling component includes a drilling cylinder (501) rotatably installed on the inner wall of the airtight adapter (402). A plurality of clearance holes (5011) and a plurality of suction holes (5012) are provided on the outer wall of the drilling cylinder (501). An inner sleeve (502) is fixedly installed in the middle of the left wall of the drilling cylinder (501). The inner sleeve (502) penetrates the right side of the drilling cylinder (501). The drilling barrel (501) has multiple side drilling units distributed equidistantly on the left and right sides. Each side drilling unit includes multiple external splined shafts (503) distributed at equal angles. The external splined shafts (503) are rotatably mounted on the outer wall of the inner sleeve (502) and movably penetrate the inner and outer walls of the inner sleeve (502). A boring tool holder (5031) is movably installed inside the clearance hole (5011). The position of the boring tool holder (5031) corresponds to the position of the external splined shafts (503), and the boring tool holder (5031) is away from the external splined shafts. A boring head (5032) is fixedly installed on one side of the boring tool holder (5031). A limiting torsion shaft (5033) is fixedly installed in the middle of the side of the boring tool holder (5031) near the external spline shaft (503). An internal spline hole (5034) is opened at the end of the limiting torsion shaft (503) near the external spline shaft (503). The inner wall of the internal spline hole (5034) is slidably connected to the outer wall of the external spline shaft (503). A driven bevel gear (5035) is fixedly installed at the end of the external spline shaft (503) away from the limiting torsion shaft (5033). The outer wall of the limiting torsion shaft (5033) is... A cylindrical cam (5036) is fixedly installed at one end of the wall away from the boring head (5032). A plurality of fixed discs (5037) are fixedly installed on the outer wall of the inner sleeve (502) at equal distances. A plurality of cam pins (5038) are fixedly installed on the right side of each fixed disc (5037) at equal angles. The position of the cam pins (5038) corresponds to the position of the cylindrical cam (5036), and the outer wall of the cam pins (5038) is slidably connected to the cam groove wall of the cylindrical cam (5036). A plurality of adsorption components are provided inside the drilling cylinder (501) at equal angles.

2. The integrated equipment for assessing and preventing rockbursts in coal mines according to claim 1, characterized in that: The drive component (4) also includes a power motor (403), which is fixedly installed on the right side of the propulsion vertical plate (401). The output shaft of the power motor (403) movably passes through the propulsion vertical plate (401), and the end of the output shaft of the power motor (403) is fixedly connected to a power shaft (404). The power shaft (404) extends into the interior of the inner sleeve (502), and the left end of the power shaft (404) is rotatably connected to the left wall of the drilling barrel (501). Multiple active bevel gears (405) are fixedly installed on the outer wall of the power shaft (404) at equal distances. The positions of the active bevel gears (405) correspond to the positions of the driven bevel gears (5035), and the active bevel gears (405) mesh with the driven bevel gears (5035).

3. The integrated equipment for assessing and preventing rockbursts in coal mines according to claim 2, characterized in that: A sun gear (407) is fixedly installed on the outer wall of the power shaft (404). Multiple planetary supports (408) distributed at equal angles are fixedly installed on the left side of the propulsion vertical plate (401). Planetary gears (409) are rotatably installed on the outer wall of the planetary supports (408). All planetary gears (409) mesh with the sun gear (407). A fixed flange (4010) is fixedly installed on the right end of the outer wall of the inner sleeve (502). A large gear ring (4011) is fixedly installed on the right side of the fixed flange (4010). The large gear ring (4011) is located around the planetary gears (409) and meshes with the planetary gears (409).

4. The integrated equipment for assessing and preventing rockbursts in coal mines according to claim 3, characterized in that: The left side of the vertical push plate (401) has four guide holes (4015) at each of the four corners. The inner wall of each guide hole (4015) is slidably fitted with a smooth rod (4016). The smooth rod (4016) is fixedly installed between the two square vertical tubes (2) located in the left and right directions. The top of the vertical push plate (401) is fixedly fitted with an internal thread seat (4013). The internal thread seat (4013) is internally threaded with a feed screw (4014). The feed screw (4014) is rotatably installed between the two square horizontal bars (3) on the left and right sides.

5. The integrated equipment for assessing and preventing rockbursts in coal mines according to claim 4, characterized in that: An adsorption housing (801) is fixedly installed on the top of the base (1). The adsorption housing (801) is located at the bottom of the drilling cylinder (501). A collection drawer (802) is slidably installed inside the adsorption housing (801). A negative pressure suction pipe (803) is fixedly installed on the top of the adsorption housing (801). The negative pressure suction pipe (803) is connected to the inside of the adsorption housing (801). A negative pressure fan (804) is fixedly installed on the top of the adsorption housing (801). The suction end of the negative pressure fan (804) is connected to the interior of the adsorption housing (801). The bottom of the airtight adapter (402) is provided with a vent hole (4020). An air nozzle (4021) is fixedly installed at the bottom of the airtight adapter (402). The air nozzle (4021) is located outside the opening of the vent hole (4020). The end of the negative pressure suction tube (803) away from the adsorption housing (801) is fixedly connected to the bottom of the air nozzle (4021).

6. The integrated equipment for assessing and preventing rockbursts in coal mines according to claim 5, characterized in that: The adsorption component includes an adsorption tile groove (601) fixedly installed on the inner wall of the drilling tube (501). The adsorption component also includes two left and right distributed push rods (602). The push rods (602) movably penetrate the inner tube sleeve (502) and the adsorption tile groove (601), and the outer wall of the push rods (602) is slidably connected to the through hole of the inner tube sleeve (502). The push rods (602) penetrate the inner wall and the outer wall of the inner tube sleeve (502). The ends of the two push rods (602) away from the inner tube sleeve (502) are connected together to a connecting wire. The connecting plate (603) is located inside the adsorption tile groove (601). Multiple sealing blocks (605) are fixedly installed on the side of the connecting plate (603) away from the top rod (602). The positions of the multiple sealing blocks (605) correspond one-to-one with the positions of the multiple adsorption holes (5012). Two push cams (406) are fixedly installed on the outer wall of the power shaft (404). The positions of the push cams (406) correspond to the positions of the top rod (602).

7. The integrated equipment for assessing and preventing rockbursts in coal mines according to claim 6, characterized in that: Each of the sealing blocks (605) has a guide rod (606) fixedly installed on the middle of the side away from the top rod (602). The diameter of the guide rod (606) is smaller than the diameter of the adsorption hole (5012).

8. The integrated equipment for assessing and preventing rockbursts in coal mines according to claim 7, characterized in that: Each of the top rods (602) is fitted with a return spring (604), which is fixedly installed between the adsorption tile groove (601) and the connecting plate (603).

9. The integrated equipment for assessing and preventing rockbursts in coal mines according to claim 8, characterized in that: The drilling barrel (501) has multiple air guide holes (5013) through it on the right side. The positions of the multiple air guide holes (5013) correspond one-to-one with the positions of the multiple adsorption tile grooves (601). The drilling barrel (5011) has multiple air guide pipes (5014) fixedly installed on the right side. The air guide pipes (5014) are located outside the openings of the air guide holes (5013) and are located inside the airtight adapter cover (402).

10. The integrated equipment for assessing and preventing rockbursts in coal mines according to claim 1, characterized in that: A drill bit (7) is fixedly installed at the left end of the drilling barrel (501).

Images