A high-safety mine drilling device

Abstract

The present application relates to the technical field of drilling device, disclose a kind of high safety's mining drilling device, including drilling machine, the upper and lower ends of the drilling machine are respectively fixed with several centralizers, the drilling machine uses the pneumatic drill of central through shaft, telescopic limiting assembly is installed on the centralizer, the telescopic limiting assembly includes straight line actuator fixed on the centralizer, the drive end of the straight line actuator is fixed with limit block, the gas inlet of the drilling machine is fixed with joint, and the top of joint is connected with gas pipe.The present application is realized deep hole drilling operation by using telescopic transmission shaft that can vertically slide, cooperates with electric hoist to control rope winding and unwinding, without manual installation or disassembly drill rod, to avoid repeated start and stop, break through the length limit of drill rod, simultaneously by straight line actuator drive limit block fixed drilling machine, guarantee drilling stability and continuity, improve overall operation efficiency.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, specifically a high-safety drilling equipment for mining operations. Background Technology

[0002] In mining operations, blasting is a crucial process for breaking up rock masses and creating conditions for subsequent mining operations. The quality and efficiency of drilling operations before blasting directly affect the blasting effect, mining progress, and operational safety. Mining blasting operations require the selection of appropriate blasting methods based on factors such as the scale of mining and rock mass characteristics. These mainly include shallow-hole blasting, medium-hole blasting, and deep-hole blasting. Different blasting methods have significantly different requirements for drilling depth. Among them, deep-hole blasting is particularly widely used in large-scale mining operations because it can achieve large-scale rock mass breaking and improve mining efficiency.

[0003] To meet the operational needs of different drilling depths, especially deeper drilling, existing mines typically use drilling equipment with drill rods to adapt to varying depths. However, in actual mining scenarios, the drilling depth required for some blasting operations often far exceeds the height of the drilling equipment itself. This necessitates splicing multiple sets of short drill rods or selecting a single, longer drill rod to achieve the preset drilling depth. Currently, the installation of drill rods mainly relies on manual labor. Operators must manually connect and fix the drill rods, which is not only cumbersome and labor-intensive but also presents challenges in ensuring connection accuracy, significantly reducing the efficiency of pre-drilling preparation and overall drilling operations.

[0004] More importantly, in actual drilling operations in mines, the drilling depth often needs to be dynamically adjusted according to the actual rock mass. The existing drilling equipment has a fixed drill rod length, which cannot be flexibly adjusted. If insufficient depth is found during drilling, drilling operations must be suspended, and the drill rod must be manually added again before restarting the operation. If the drill rod is added too long, it may cause the drilling depth to exceed the requirements, leading to problems in matching the amount of blasting explosives and wasting resources. This repeated start-stop and addition operation caused by the limitation of drill rod length further exacerbates the complexity of the operation process, significantly reduces the continuity and overall efficiency of drilling operations, and is difficult to adapt to the demand for efficient operation in mining. At the same time, the frequent manual connection of drill rods also poses problems such as equipment failure and safety hazards caused by improper operation, affecting the safety and stability of the operation.

[0005] A search revealed Chinese patent CN118774573B, which discloses a blasting drilling device for mining, comprising a frame, a drilling machine top, a positioning frame, and a sliding block. A retraction compartment is mounted on the frame, with a pull cable extending downwards from the bottom side of the compartment. A retraction shaft is installed inside the compartment, and its rotation controls the length of the pull cable extending outside the compartment. A drive compartment is mounted at the bottom of the drilling machine top, containing a liftable lifting seat. A positioning plate is hinged to the end of the positioning frame. The lifting seat descends and pushes the positioning frame to rotate outwards, causing the positioning plate to move outwards and fit against the inner wall of the drilled hole. The lifting drive assembly can push the sliding block and drill rod downwards, coordinating with the rotation of the drill rod to complete the downward drilling. In this invention, the traction cable is gradually extended and retracted, allowing the drilling structure to penetrate deep into the duct. Through multiple descents and drilling operations, the entire duct is drilled. The drilling depth is not limited by the length of the drill rod, and the drilling depth can be directly controlled by the traction cable, thus improving the efficiency of the entire drilling process.

[0006] The aforementioned application lacks an effective chip removal design. During the drilling process, the rock fragments generated by the rotation of the drill rod lack a dedicated discharge channel and collection and transportation mechanism. The fragments tend to accumulate at the bottom of the borehole or around the drill rod, which not only hinders the continuous downward movement and rotation of the drill rod, increasing drilling resistance and reducing drilling efficiency, but may also lead to accelerated wear of the drill rod, deviation in drilling accuracy, and even affect the loading of explosives in subsequent blasting operations due to the blockage of the borehole by the fragments. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a high-safety drilling device for mining operations.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a high-safety drilling device for mining operations, comprising a drilling machine, wherein a plurality of stabilizers are fixedly mounted at the upper and lower ends of the drilling machine, the drilling machine is a pneumatic drilling machine with a central through shaft, a telescopic limiting assembly is installed on the stabilizer, the telescopic limiting assembly includes a linear actuator fixedly mounted on the stabilizer, a limiting block is fixedly mounted at the drive end of the linear actuator, a connector is fixedly mounted at the air inlet of the drilling machine, and an air supply pipe is connected to the top end of the connector, and the drive shaft of the drilling machine is a telescopic drive shaft that can slide vertically, an air outlet is opened on the lower side wall of the telescopic drive shaft, and a drill bit is fixedly mounted at the bottom end of the telescopic drive shaft.

[0009] Preferably, a chip removal assembly is provided on the outer side of the connector. The chip removal assembly includes a collection ring and a snap-fit ​​module. A chip removal port is opened on the surface of the collection ring, and an extension tube is fixed above the chip removal port. The snap-fit ​​module includes a sliding groove on the outer side of the connector and an annular snap-fit ​​groove on the inner side of the collection ring. A trapezoidal snap-fit ​​block is slidably disposed in the sliding groove, and an elastic element is fixed between the snap-fit ​​block and the sliding groove.

[0010] Preferably, a connecting ring is fixed at the bottom of the collecting ring, and a groove with an L-shaped cross-section is opened at the top of the connecting ring. A sliding ring is vertically slidably arranged inside the groove. A hanging rope passing through the collecting ring is fixed above the sliding ring. A magnetic ring is fixed on the inner side of the sliding ring, and a magnetic block is embedded and fixed on the outer side of the locking block, which is magnetically repelled by the magnetic ring.

[0011] Preferably, the outer side of the sliding ring is provided with an annular limiting groove; the top of the limiting block is fixedly provided with an L-shaped limiting frame; the inside of the joint is provided with an L-shaped mounting cavity that communicates with the sliding groove; a U-shaped limiting member is slidably connected inside the mounting cavity; an elastic member is fixedly provided between the top of the limiting member and the top wall of the mounting cavity; and a compression ring sleeved on the outside of the joint is fixedly provided at the bottom of the limiting member.

[0012] Preferably, a protective assembly is installed below the drilling machine. The protective assembly includes an annular baffle fixed at the bottom of the drilling machine. A feed inlet is opened on the surface of the baffle. A conveying cylinder is fixed above the feed inlet. A conveying cover is fixed at the top of the conveying cylinder. The top of the conveying cover is inserted into a collecting ring. A crushing module is installed below the baffle.

[0013] Preferably, the crushing module includes a fixed cone and a moving cone. The fixed cone is fixed to the bottom of the baffle, and the moving cone is fixed to the outer wall of the drive shaft of the drilling machine. The fixed cone has a conveying channel inside.

[0014] Preferably, the conveying channel is coaxially provided with an annular intercepting net inside, and an intercepting ring is provided on the outer side of the intercepting net. The surface of the intercepting ring is provided with annularly distributed air vents, and the surface of the intercepting ring is provided with a number of notches. A number of partitions are fixedly provided inside the intercepting net, and the other end of the partitions is fixedly connected to the drive shaft of the drilling machine.

[0015] Preferably, the telescopic transmission shaft includes an upper cylinder and a lower cylinder. The inner side wall of the lower cylinder is provided with a connecting groove, and the bottom end of the upper cylinder is provided with a sliding groove. A locking block is slidably disposed inside the sliding groove. An elastic element is fixedly connected between the locking block and the sliding groove. A trapezoidal pushing block is fixedly disposed at the top end of the sliding groove.

[0016] Preferably, the lower cylinder includes a transmission cylinder, an air outlet cylinder, and a fixed end that are rotatably connected from top to bottom. A plurality of connecting columns are fixed between the transmission cylinder and the fixed end, and a plurality of blades arranged in a ring are fixed on the inner sidewall of the air outlet cylinder.

[0017] Preferably, a frame is provided above the drilling machine, and an electric hoist is fixed inside the frame and wound and fixedly connected with a hoisting rope. Several slots are provided on the inner side wall of the frame.

[0018] Working principle: The linear actuator extends and moves to fix the drilling machine against the inner wall of the hole by pressing the limit block. Then, compressed air is input. When the compressed air flows inside the telescopic drive shaft, it pushes the telescopic drive shaft to gradually extend, so that the drill bit can automatically descend to drill. The compressed air finally flows out through the air outlet, and drives the debris in the hole to flow upward and be discharged from the hole, so as to avoid the debris from accumulating in the hole and running the drill bit.

[0019] This invention provides a highly safe drilling device for mining operations. It offers the following advantages:

[0020] 1. This invention utilizes a vertically sliding telescopic transmission shaft, combined with an electric hoist to control the raising and lowering of the hoisting rope, enabling deep hole drilling operations without the need for manual installation or removal of drill rods. This avoids repeated start-stop cycles, overcomes the limitations of drill rod length, and simultaneously uses a linear actuator to drive a limit block to fix the drilling machine, ensuring drilling stability and continuity, and improving overall work efficiency.

[0021] 2. This invention utilizes the synergistic effect of compressed air guidance and chip removal components. Compressed air is ejected from the outlet of the telescopic drive shaft, causing the fragments to flow upwards. Structures such as the collection ring and extension pipe achieve temporary collection of fragments. Then, an electric hoist pulls the collection ring upwards to complete the ground chip removal. The baffle and conveying cylinder of the protective component guide the airflow and fragments to flow in a directional manner. The crushing module grinds large fragments. The interception net and interception ring achieve interval and quantitative discharge of fragments, comprehensively preventing fragments from accumulating and clogging the channels or damaging the equipment.

[0022] 3. During the drilling process of this invention, the baffle and conveyor cover can prevent debris from flying and injuring people. The stabilizer and telescopic limit component ensure that the drilling machine operates stably in the hole and avoids deviation or shaking. The collection ring is stably connected by the snap-fit ​​module. The limit component enhances the snap-fit ​​stability. When the drilling machine is recovered, the limit frame fixes the sliding ring to prevent the collection ring from accidentally falling off, reducing the risk of manual operation and the probability of equipment failure.

[0023] 4. The air outlet of the telescopic drive shaft of this invention rotates at high speed under the action of airflow, forming a strong and concentrated annular airflow jet. This provides continuous thrust for the discharge of fragments, reduces the adhesion of fragments to the hole wall, and disperses easily clogged fragment clusters, preventing blockage of the chip discharge channel. At the same time, the airflow can carry the fragments smoothly into the crushing module. With the rotational grinding of the fixed cone and the moving cone, large fragments are crushed into fine particles. Then, the fragments are quantitatively guided by the interval of the interception net and the interception ring to ensure smooth discharge. This completely solves the problem of large fragments being difficult to transport and easily clogging the chip discharge channel, ensuring the stable operation of the chip discharge system. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a schematic diagram of the drilling machine of the present invention;

[0026] Figure 3 This is a schematic diagram of the chip removal assembly structure of the present invention;

[0027] Figure 4 This is another structural schematic diagram of the chip removal assembly of the present invention;

[0028] Figure 5 This is a schematic diagram of the protective component structure of the present invention;

[0029] Figure 6 This is another structural schematic diagram of the protective component of the present invention;

[0030] Figure 7 This is a schematic diagram of the interception net and interception ring structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the telescopic transmission shaft structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the lower cylinder structure of the present invention.

[0033] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0034] Among them, 1. Drilling machine; 2. Centralizer;

[0035] 3. Telescopic limit assembly; 31. Linear actuator; 32. Limit block;

[0036] 4. Connector; 5. Gas pipe;

[0037] 6. Telescopic drive shaft; 61. Upper cylinder; 62. Lower cylinder; 63. Connecting groove; 64. Second sliding groove; 65. Second locking block; 66. Second elastic element; 67. Pushing block;

[0038] 621. Transmission cylinder; 622. Air outlet cylinder; 623. Fixed end; 624. Connecting column; 625. Blade;

[0039] 7. Drill bit;

[0040] 8. Chip removal assembly; 801. Collection ring; 802. Extension tube; 803. Snap-fit ​​module; 804. Connecting ring; 805. Sliding ring; 806. Lifting rope; 807. Magnetic ring one; 808. Magnetic block one; 809. Limiting groove; 810. Limiting frame; 811. Mounting cavity; 812. Limiting component; 813. Elastic component three; 814. Compression ring;

[0041] 8031. Slide groove 1; 8032. Slot; 8033. Block 1; 8034. Elastic element 1;

[0042] 9. Protective components; 901. Baffle; 902. Conveyor cylinder; 903. Conveyor cover; 904. Fixed cone; 905. Moving cone; 906. Interception net; 907. Interception ring; 908. Partition; 10. Frame; 11. Electric hoist; 12. Slot. Detailed Implementation

[0043] The technical solution of the present invention will now be clearly and completely described 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.

[0044] Example 1, please refer to the appendix. Figure 1 - Appendix Figure 3 This invention provides a high-safety drilling device for mining operations, including a drilling machine 1. Several stabilizers 2 are fixedly mounted on the upper and lower ends of the drilling machine 1. The drilling machine 1 is a pneumatic drilling machine with a central through-shaft. A telescopic limiting assembly 3 is installed on each stabilizer 2. The telescopic limiting assembly 3 includes a linear actuator 31 fixedly mounted on the stabilizer 2. An H-shaped limiting block 32 is fixedly mounted on the drive end of the linear actuator 31. A connector 4 is fixedly mounted at the air inlet of the drilling machine 1, and an air supply pipe 5 is connected to the top of the connector 4. The drive shaft adopts a telescopic drive shaft 6 that can slide vertically. The lower side wall of the telescopic drive shaft 6 is provided with an air outlet, and the bottom end of the telescopic drive shaft 6 is fixed with a drill bit 7. The upper end of the air supply pipe 5 is connected to an air compressor. The stabilizer 2 includes a fixed bracket that is fixedly connected to the drilling machine 1 frame. A rotating wheel is rotatably provided at the end of the fixed bracket away from the drilling machine 1. The rotating wheel abuts against the inner wall of the hole to stabilize the drilling machine 1. One end of the limiting block 32 passes through and is slidably connected to the fixed bracket. The linear actuator 31 adopts an electric push cylinder or a pneumatic cylinder.

[0045] Specifically, during drilling, the air compressor operates by supplying compressed air into the drilling machine 1 through the air pipe 5, which drives the drilling machine 1 to rotate, causing the drill bit 7 to rotate and drill. Before drilling in the hole, the drilling machine 1 first extends through the linear actuator 31, causing the limit block 32 to abut against the inner wall of the hole to fix the drilling machine 1. Then, compressed air is supplied. When the compressed air flows inside the telescopic drive shaft 6, it pushes the telescopic drive shaft 6 to gradually extend, so that the drill bit 7 can automatically descend to drill. Finally, the compressed air flows out through the air outlet, and drives the debris in the hole to flow upward and be discharged from the hole, thus avoiding the accumulation of debris in the hole and the operation of the drill bit 7.

[0046] Please see the appendix Figure 1A frame 10 is provided above the drilling machine 1. The bottom of the frame 10 can be equipped with casters for movement. Several slots 12 are provided on the inner side wall of the frame 10.

[0047] Specifically, when drilling holes in the ground, the linear actuator 31 extends to align the limiting block 32 and insert it into the slot 12 to fix the drilling machine 1.

[0048] Example 2, please refer to the appendix. Figure 3 - Appendix Figure 4 Since the compressed air alone is insufficient to drive the debris out of the hole to the ground when the drilling machine 1 drills a deep hole, this embodiment proposes the following solution to solve the above problem: A chip removal component 8 is provided on the outside of the connector 4. The chip removal component 8 includes a counterweight collecting ring 801 and a snap-fit ​​module 803. A chip removal port is opened on the surface of the collecting ring 801, and an extension tube 802 is fixed above the chip removal port. The snap-fit ​​module 803 includes a sliding groove 8031 ​​opened on the outside of the connector 4 and an annular snap-fit ​​groove 8032 opened on the inside of the collecting ring 801. A trapezoidal snap-fit ​​block 8033 is slidably arranged in the sliding groove 8031. An elastic element 8034 is fixed between the snap-fit ​​block 8033 and the sliding groove 8031. The top of the connector 4 is shaped like a frustum to connect with the collecting ring 801. The diameter of the collecting ring 801 is consistent with or slightly smaller than the diameter of the hole.

[0049] Specifically, the card block 8033 extends and inserts into the card slot 8032 through the elastic force of the elastic element 8034, so that the collecting ring 801 is engaged on the outside of the connector 4. When the compressed air drives the fragments to be discharged through the chip discharge port, it is then transported along the extension pipe 802 for a certain distance before falling onto the collecting ring 801. This can prevent the fragments from accumulating on the collecting ring 801 and blocking the chip discharge port when they cannot be discharged from the hole.

[0050] Please see the appendix Figure 3 - Appendix Figure 4 A connecting ring 804 is fixedly provided at the bottom of the collecting ring 801. A groove with an L-shaped cross-section is provided at the top of the connecting ring 804. A sliding ring 805 is vertically slidably arranged inside the groove. A hanging rope 806 passing through the collecting ring 801 is fixedly provided above the sliding ring 805. A magnetic ring 807 is fixedly provided on the inner side of the sliding ring 805. A magnetic block 808 that is magnetically repelled by the opposite side of the magnetic ring 807 is embedded and fixedly provided on the outer side of the locking block 8033. An electric hoist 11 that is wound and fixedly connected to the hanging rope 806 is fixedly provided inside the frame 10.

[0051] Specifically, when it is necessary to adjust the descent height of the drilling machine 1, the linear actuator 31 retracts and the air compressor stops running. Then, the electric hoist 11 controls the hoisting rope 806 to release the line, causing the drilling machine 1 to descend and the telescopic drive shaft 6 to retract. Subsequently, the linear actuator 31 extends so that the limit block 32 abuts against the hole for fixation and the air compressor runs. By repeating the above steps, deep hole drilling can be achieved without being limited by the length of the drill rod.

[0052] When debris accumulates above the collecting ring 801 and needs to be removed, the linear actuator 31 is first extended so that the limiting block 32 abuts against the channel for fixation. Then, the electric hoist 11 is wound up to drive the hoisting rope 806 to rise. The hoisting rope 806 pulls the sliding ring 805 upward, causing the magnetic ring 807 to rise and face the magnetic block 808. Through the magnetic repulsion between the two, the locking block 8033 is retracted into the slide groove 8031 ​​and the elastic element 8034 is compressed. At this time, the collecting ring 801 is disengaged from the connector 4 and moves upward under the pull of the hoisting rope 806, thereby removing the debris accumulated above it. The blocks are transported to the ground for workers to clean, thus completely preventing the accumulation of fragments in the channel. After cleaning, the electric guardrail releases the line again, causing the collecting ring 801 to descend. The collecting ring 801 moves down along the air supply pipe 5 to pass through the connector 4. When passing the locking block 8033, it is pushed laterally into the slide groove 8031 ​​along its slope (at this time, the magnetic repulsion between the magnetic ring 807 and the magnetic block 808 disappears). When it descends to the bottom, the locking block 8033 is aligned with the slot 8032 again, so that the collecting ring 801 and the connector 4 are locked together again to achieve reset.

[0053] Please see the appendix Figure 4 The outer side of the sliding ring 805 is provided with an annular limiting groove 809, and the top of the limiting block 32 is fixed with an L-shaped limiting frame 810.

[0054] Specifically, initially, the linear actuator 31 extends a certain distance, so that the limiting block 32 neither abuts against the hole nor the limiting frame 810 moves to the limiting groove 809. When the drilling machine 1 needs to be retrieved after drilling is completed, the linear actuator 31 retracts to its minimum amplitude, so that the limiting frame 810 moves to the limiting groove 809 and inserts into the limiting groove 809, thereby fixing the sliding ring 805 and preventing the sliding ring 805 from moving upward. At this time, the electric hoist 11 can be used to wind up the hoisting rope 806 to drive the drilling machine 1 to move upward, and the collecting ring 801 will not be disengaged from the connector 4, thus realizing the retrieval operation of the drilling machine 1.

[0055] Please see the appendix Figure 4The connector 4 has an L-shaped mounting cavity 811 that communicates with the slide groove 8031. A U-shaped limiting member 812 is slidably connected inside the mounting cavity 811. An elastic member 813 is fixed between the top of the limiting member 812 and the top wall of the mounting cavity 811. A compression ring 814 is fixed at the bottom of the limiting member 812 and sleeved on the outside of the connector 4.

[0056] Specifically, a groove is provided on the rear side of the first locking block 8033. The tension of the elastic element 813 causes the top of the limiting element 812 to slide upward to the groove, allowing the first locking block 8033 to slide normally. When the collecting ring 801 descends to the bottom, the gravity of the collecting ring 801 applies pressure to the extrusion ring 814, causing it to drive the limiting element 812 to slide downward. This causes the top of the limiting element 812 to slide down and abut against the rear end of the first locking block 8033, thereby limiting the first locking block 8033 and preventing it from sliding and accidentally exiting the slot 8032, thus enhancing the stability of the engagement between the connector 4 and the winding ring.

[0057] Example 3, please refer to the appendix. Figure 5 - Appendix Figure 6 When compressed air carries the fragments upward through the drilling machine 1, the fragments will collide with the drilling machine 1, causing some damage. This example proposes the following solution to solve the above problem: A protective component 9 is installed below the drilling machine 1. The protective component 9 includes an annular baffle 901, which is fixed at the bottom of the drilling machine 1. The surface of the baffle 901 has a feed inlet, and a conveying cylinder 902 is fixed above the feed inlet. A conveying cover 903 is fixed at the top of the conveying cylinder 902. The top of the conveying cover 903 is inserted into the collecting ring 801. The diameter of the baffle 901 is the same as or slightly smaller than the diameter of the hole. There are two to eight sets of feed inlets and conveying cylinders 902, preferably four sets.

[0058] Specifically, when compressed air flows upward, the baffle 901 intercepts the air and debris, preventing the debris from flowing through the drilling machine 1. The debris and air flow through the feed inlet, conveyor cylinder 902, and conveyor cover 903 before being discharged upward through the chip outlet, thus ensuring the safety of the drilling machine 1 during use. Furthermore, when the airflow carries the broken small fragments out of the hole, it can effectively prevent accidental splashing and injury to nearby personnel, improving the safety of the device during use.

[0059] Please see the appendix Figure 5 - Appendix Figure 6 A crushing module is installed below the baffle 901. The crushing module includes a fixed cone 904 and a moving cone 905. The fixed cone 904 is fixed to the bottom of the baffle 901, and the moving cone 905 is fixed to the outer wall of the drive shaft of the drilling machine 1. A conveying channel is opened inside the fixed cone 904. The crushing principle of the fixed cone 904 and the moving cone 905 is existing technology and will not be described in detail here.

[0060] Specifically, when the airflow flows upward, it carries the fragments into the crushing channel formed between the fixed cone 904 and the moving cone 905, which is narrow at the top and wide at the bottom. Smaller fragments flow upward through the crushing channel and the conveying channel via the feed inlet. When the telescopic drive shaft 6 rotates, it drives the moving cone 905 to rotate. The rotation of the fixed cone 904 and the moving cone 905 grinds and crushes the fragments stuck in the crushing channel, thereby preventing larger fragments from clogging the feed inlet, conveying cylinder 902, conveying cover 903, chip discharge port, or extension pipe 802 during conveying, which would affect the normal chip discharge function of the device.

[0061] Please see the appendix Figure 7 An annular intercepting net 906 is coaxially arranged inside the conveying channel. An intercepting ring 907 is arranged on the outer side of the intercepting net 906. Several notches are opened on the surface of the intercepting ring 907. Several partitions 908 are fixed inside the intercepting net 906, and the other end of the partition 908 is fixedly connected to the drive shaft of the drilling machine 1. Annularly distributed air vents are opened on the surface of the intercepting ring 907. The mesh size of the intercepting net 906 is larger than the qualified crushed debris, so that the debris can pass through the intercepting net 906. The size of the air vents is smaller than the qualified crushed debris, so that the debris is intercepted by the intercepting ring 907.

[0062] Specifically, when the airflow carries the fragments into the conveying channel, the fragments are intercepted by the intercepting net 906 and the intercepting ring 907, and the fragments are temporarily stored in sections by the partition 908. When the intercepting net 906 in a certain area rotates to the gap, the fragments flow out through the intercepting net 906, thus discharging the fragments intermittently. This helps to avoid the blockage problem caused by too many fragments being discharged at once, which would cause them to flow inside the feed inlet, conveying cylinder 902, conveying cover 903, chip discharge port, or extension pipe 802. When the airflow carries the crushed fragments into the conveying channel, the airflow is not intercepted by the air outlet and flows normally, so that the airflow can be relatively dispersed in a ring shape, thus keeping the amount of fragments stored in the section roughly the same, so that the fragments can be discharged in a roughly quantitative manner.

[0063] Example 4, please refer to the appendix. Figure 8 The telescopic transmission shaft 6 includes an upper cylinder 61 and a lower cylinder 62. The inner side wall of the lower cylinder 62 is provided with a connecting groove 63, and the bottom end of the upper cylinder 61 is provided with a sliding groove 64. A locking block 65 is slidably arranged inside the sliding groove 64.

[0064] Specifically, when the telescopic drive shaft 6 retracts and rotates, the upper cylinder 61 is driven by the drilling machine 1 to rotate, while the lower cylinder 62 remains relatively stationary. At this time, the second locking block 65 slides outward under the action of centrifugal force and can be aligned and inserted into the connecting groove 63 during rotation, thereby transmitting the driving force to the lower cylinder 62, which drives the drill bit 7 to perform drilling operations.

[0065] Please see the appendix Figure 8 An elastic element 66 is fixedly connected between the second locking block 65 and the second sliding groove 64, and a trapezoidal pushing block 67 is fixedly provided at the top of the second sliding groove 64.

[0066] Specifically, the elastic element 66 applies an outward pushing force to the locking block 65, making the insertion of the locking block 65 into the connecting groove 63 more stable. When the lower cylinder 62 moves downward under the push of the airflow, the locking block moves upward along the connecting groove 63 until the locking block moves laterally along the inclined surface of the push block 67 and exits the connecting groove 63 (or the upper cylinder 61 can be raised by the electric hoist 11 to make the push block 67 rise and exit the connecting groove 63 along the push block 67), completing a single drilling operation. This also prevents the drilling machine 1 from driving the drill bit 7 to rotate. The drill bit 7 no longer rotating reduces the friction with the bottom of the hole, and its weight is transferred to the bottom of the hole, thereby reducing the resistance of the airflow. This allows the airflow to be ejected more powerfully, improving the airflow's conveying effect on the fragments. It also helps to carry large fragments through the crushing module for crushing and discharge, thus helping to avoid the problem that large fragments cannot be well conveyed by the airflow due to their weight.

[0067] Please see the appendix Figure 9 The lower cylinder 62 includes a transmission cylinder 621, an air outlet cylinder 622, and a fixed end 623 that are rotatably connected from top to bottom. Several connecting columns 624 are fixed between the transmission cylinder 621 and the fixed end 623. Several blades 625 arranged in a ring are fixed on the inner side wall of the air outlet cylinder 622. The air outlet is located on the surface of the air outlet cylinder 622.

[0068] Specifically, when the upper cylinder 61 drives the lower cylinder 62 to rotate, the transmission cylinder 621 drives the connecting column 624 and the fixed end 623 to rotate, causing the drill bit 7 installed at the bottom of the fixed end 623 to rotate. The air outlet 622 is not driven by the drilling. When the airflow is delivered through the lower cylinder 62 and discharged from the air outlet, it can generate a high-speed rotation compared to the drill bit 7 through cooperation with the blade 625. This causes the airflow to be ejected rapidly in a ring shape and drive the fragments to flow upward, forming a strong and concentrated airflow jet. This generates a uniform and continuous upward thrust on the fragments at the bottom and around the hole, greatly improving the fragment discharge rate, reducing the chip removal time to ensure continuous drilling operations. It can also build a stable airflow channel in the hole, reducing the probability of fragments adhering and accumulating on the hole wall, while breaking up easily clogged fragment clusters, effectively avoiding blockage of the chip removal channel and ensuring the stable operation of the chip removal system.

[0069] Workflow:

[0070] 1. Preliminary preparation: Move the frame 10 to the drilling position. If drilling is on the ground, extend the linear actuator 31 on the stabilizer 2 to align the limit block 32 and insert it into the slot 12 on the inner wall of the frame 10 to fix the drilling machine 1. If working in a duct, the linear actuator 31 will drive the limit block 32 to abut against the inner wall of the duct to achieve fixation. At the same time, connect the upper end of the air pipe 5 to the air compressor to ensure that the connection of each component is stable.

[0071] 2. Drilling Start-up: Start the air compressor and input compressed air into the drilling machine 1 through the air supply pipe 5, which drives the drilling machine 1 to rotate and run, thereby driving the drill bit 7 at the bottom of the telescopic drive shaft 6 to rotate. When the compressed air flows inside the telescopic drive shaft 6, it pushes the telescopic drive shaft 6 to gradually extend, so that the drill bit 7 automatically descends to carry out drilling operations. During the drilling process, the stabilizer 2 abuts against the inner wall of the hole through the rotating wheel to ensure the stability of the drilling machine 1 during operation and avoid deviation.

[0072] 3. Fragmentation Processing: The fragments generated during drilling flow upward under the impetus of compressed air. The airflow carries the fragments into the crushing channel formed by the fixed cone 904 and the moving cone 905. The rotation of the telescopic transmission shaft 6 drives the moving cone 905 to rotate, which works with the fixed cone 904 to grind and crush the large fragments. The crushed fragments are carried by the airflow through the conveying channel. After being intercepted and temporarily stored in sections by the intercepting net 906 and the intercepting ring 907, they are periodically and quantitatively fed into the conveying cylinder 902 through the feed port on the baffle 901. Then, they are conveyed to the collecting ring 801 through the conveying cover 903. Finally, some fragments are discharged along the extension pipe 802, and the fragments that are not discharged accumulate on the collecting ring 801.

[0073] IV. Deep Hole Adaptation: If it is necessary to increase the drilling depth, first stop the air compressor, control the linear actuator 31 to retract so that the limit block 32 is disengaged from the inner wall of the hole, control the hoist 11 to release the hoisting rope 806, lower the drilling machine 1 and retract the telescopic transmission shaft 6, then extend the linear actuator 31 again so that the limit block 32 abuts against the inner wall of the hole to fix the drilling machine 1, restart the air compressor, and repeat the drilling and debris handling steps until the preset drilling depth is reached.

[0074] V. Chip Removal Operation: When there are many chips accumulated on the collecting ring 801, keep the linear actuator 31 in the extended state to fix the drilling machine 1 with the limit block 32, start the electric hoist 11 to wind up the hoisting rope 806, and pull the sliding ring 805 to move upward. Through the magnetic repulsion between the magnetic ring 807 and the magnetic block 808, the locking block 8033 is stored in the slide groove 8031, releasing the locking between the collecting ring 801 and the connector 4. The hoisting rope 806 continues to pull the collecting ring 801 up to the ground. After the workers clean up the chips, control the electric hoist 11 to release the line so that the collecting ring 801 descends and resets. The locking block 8033 is reinserted into the slot 8032 under the action of the elastic element 8034, completing the locking.

[0075] VI. Equipment Recovery: After drilling is completed, stop the air compressor, control the linear actuator 31 to retract to the minimum amplitude, so that the limit frame 810 is inserted into the limit groove 809 of the sliding ring 805 to fix the sliding ring 805 and prevent the collection ring 801 from detaching from the connector 4. Start the electric hoist 11 to wind up the hoisting rope 806, and drive the drilling machine 1 to move upward as a whole to complete the equipment recovery.

[0076] Those skilled in the art can connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the above-described specific embodiments. The electrical connection is completed by the sequential operation of each electrical component. The detailed connection methods are well-known technologies in the art. The above mainly introduces the working principle and process, and will not describe the electrical control further.

[0077] 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 alterations 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. A high-safety drilling device for mining operations, comprising a drilling machine (1), wherein a plurality of stabilizers (2) are fixedly mounted at the upper and lower ends of the drilling machine (1), characterized in that: The drilling machine (1) is a pneumatic drilling machine with a central through shaft. The stabilizer (2) is equipped with a telescopic limiting component (3). The telescopic limiting component (3) includes a linear actuator (31) fixed on the stabilizer (2). The driving end of the linear actuator (31) is fixed with a limiting block (32). The air inlet of the drilling machine (1) is fixed with a connector (4), and the top end of the connector (4) is connected to an air supply pipe (5). The drive shaft of the drilling machine (1) is a telescopic drive shaft (6) that can slide vertically. The lower side wall of the telescopic drive shaft (6) is provided with an air outlet, and the bottom end of the telescopic drive shaft (6) is fixed with a drill bit (7). A chip removal assembly (8) is provided on the outside of the connector (4). The chip removal assembly (8) includes a collection ring (801) and a snap-fit ​​module (803). A chip removal port is provided on the surface of the collection ring (801), and an extension tube (802) is fixed above the chip removal port. The snap-fit ​​module (803) includes a sliding groove (8031) on the outside of the connector (4) and an annular snap-fit ​​groove (8032) on the inside of the collection ring (801). A trapezoidal snap-fit ​​block (8033) is slidably provided in the sliding groove (8031), and an elastic element (8034) is fixed between the snap-fit ​​block (8033) and the sliding groove (8031). The bottom of the collecting ring (801) is fixed with a connecting ring (804), and the top of the connecting ring (804) is provided with a groove with an L-shaped cross section. A sliding ring (805) is vertically slidably arranged inside the groove. A hanging rope (806) that passes through the collecting ring (801) is fixed above the sliding ring (805). A magnetic ring (807) is fixed inside the sliding ring (805). A magnetic block (808) that is magnetically repelled by the magnetic ring (807) is embedded in the outer side of the locking block (8033).

2. The high-safety drilling device for mining according to claim 1, characterized in that: The outer side of the sliding ring (805) is provided with an annular limiting groove (809), the top of the limiting block (32) is fixed with an L-shaped limiting frame (810), the inside of the connector (4) is provided with an L-shaped mounting cavity (811) that communicates with the sliding groove (8031), the inside of the mounting cavity (811) is slidably connected with a U-shaped limiting member (812), the top of the limiting member (812) is fixed with an elastic member three (813) between the top of the limiting member (812) and the top wall of the mounting cavity (811), and the bottom end of the limiting member (812) is fixed with a compression ring (814) sleeved on the outside of the connector (4).

3. The high-safety drilling device for mining according to claim 1, characterized in that: A protective component (9) is installed below the drilling machine (1). The protective component (9) includes an annular baffle (901). The baffle (901) is fixed at the bottom of the drilling machine (1). A feed inlet is opened on the surface of the baffle (901). A conveying cylinder (902) is fixed above the feed inlet. A conveying cover (903) is fixed at the top of the conveying cylinder (902). The top of the conveying cover (903) is inserted into the collecting ring (801). A crushing module is installed below the baffle (901).

4. The high-safety drilling device for mining according to claim 3, characterized in that: The crushing module includes a fixed cone (904) and a moving cone (905). The fixed cone (904) is fixed at the bottom of the baffle (901), and the moving cone (905) is fixed on the outer wall of the drive shaft of the drilling machine (1). The fixed cone (904) has a conveying channel inside.

5. A high-safety drilling device for mining according to claim 4, characterized in that: An annular intercepting net (906) is coaxially arranged inside the conveying channel. An intercepting ring (907) is arranged on the outside of the intercepting net (906). Annularly distributed air vents are opened on the surface of the intercepting ring (907). Several notches are opened on the surface of the intercepting ring (907). Several partitions (908) are fixed inside the intercepting net (906), and the other end of the partition (908) is fixedly connected to the drive shaft of the drilling machine (1).

6. The high-safety drilling device for mining according to claim 1, characterized in that: The telescopic transmission shaft (6) includes an upper cylinder (61) and a lower cylinder (62). The inner side wall of the lower cylinder (62) is provided with a connecting groove (63). The bottom end of the upper cylinder (61) is provided with a sliding groove (64). A locking block (65) is slidably arranged inside the sliding groove (64). An elastic element (66) is fixedly connected between the locking block (65) and the sliding groove (64). A trapezoidal pushing block (67) is fixedly provided at the top of the sliding groove (64).

7. A high-safety drilling device for mining according to claim 6, characterized in that: The lower cylinder (62) includes a transmission cylinder (621), an air outlet cylinder (622) and a fixed end (623) that are rotatably connected from top to bottom. A number of connecting columns (624) are fixed between the transmission cylinder (621) and the fixed end (623). A number of blades (625) are fixed on the inner wall of the air outlet cylinder (622) in a ring distribution.

8. A high-safety drilling device for mining according to claim 1, characterized in that: The drilling machine (1) is provided with a frame (10) above it. An electric hoist (11) is fixed inside the frame (10) and is wound and fixedly connected to the hoisting rope (806). Several slots (12) are provided on the inner side wall of the frame (10).

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