Anti-jamming coal mining drilling machine with drilling and multi-directional impact functions and use method of anti-jamming coal mining drilling machine

Abstract

The invention discloses an anti-jamming coal mining drilling machine with drilling and multidirectional impacting functions and a using method thereof.The anti-jamming coal mining drilling machine comprises a drilling machine body, a high-pressure driving mechanism is arranged on the drilling machine body through a multidirectional guide rail mechanism, and a drilling assembly is connected with the high-pressure driving mechanism; when the drilling machine works, the high-pressure driving mechanism drives the drill rod and the drill bit to conduct rotary drilling, the high-frequency transverse vibration mechanism synchronously generates transverse high-frequency vibration, the high-pressure driving mechanism drives the drill rod and the drill bit to conduct rotary drilling, and the high-frequency transverse vibration mechanism drives the drill rod and the drill bit to conduct rotary drilling. The friction force between the drill bit and rock is reduced, debris accumulation is prevented, efficient deslagging is achieved, when hard rock or drill jamming occurs, the longitudinal vibration impact mechanism triggers longitudinal vibration, impact and drill jamming prevention functions are achieved through cooperative work of transverse vibration and longitudinal vibration, the drill jamming problem under the complex geological condition is effectively solved, the drilling efficiency and equipment reliability are improved, and the drilling cost is reduced. The device is suitable for drilling operation of mining roofs and baseplates, sides and the like.

Description

Technical Field

[0001] This invention belongs to the field of coal mining equipment technology, specifically relating to a coal mining drilling rig with both drilling and multi-directional impact capabilities that prevents stuck drills and its usage method. Background Technology

[0002] With the continuous development of the mining industry, the mining depth is gradually increasing and the geological conditions are becoming more and more complex. Against this background, the geological conditions of the roof, floor and sidewalls have an increasingly significant impact on the safety of mining operations. Obtaining geological information in these areas through drilling can provide key basis for the formulation of mining plans and support design, thereby effectively avoiding safety accidents such as collapses and water inrushes.

[0003] When traditional drilling rigs encounter fractured zones, the instability of the rock can easily cause the drill rod to get stuck on the surrounding gravel during drilling, leading to a stuck drill. In strata where hard and soft rock alternate, the drilling resistance of the drilling rig changes frequently, and the impact force on the drill rod is uneven, which can also easily cause a stuck drill. Once a stuck drill occurs, it not only requires a lot of time and manpower to deal with, affecting the progress of the project, but may also cause further damage to the drill rod, drill bit and other equipment during the handling process, increasing construction costs.

[0004] While existing methods for improving drill bit structure can enhance wear resistance and breaking capacity to some extent, they cannot fundamentally solve the problem of stuck drill bits under complex geological conditions by simply improving the drill bit. Adjusting drilling parameters (such as changing drilling speed and pressure) may reduce the occurrence of stuck drill bits to a certain extent, but the adjustment of parameters needs to be carried out according to specific geological conditions, which is difficult to operate and the effect is not stable.

[0005] Specifically, the existing technology has the following technical problems: 1. In fault fracture zones, which consist of fractured rock blocks, fault gouge, and fissure water, the rock mass integrity is low. Traditional single rotary drilling methods have significant drawbacks: the fractured rock blocks generated by rotary cutting cannot be discharged in time due to the limited borehole space, forming a rock debris cushion at the bottom of the borehole. When the drill rod continues to advance, the rock debris is compressed, generating radial extrusion force, which causes the drill rod to jam radially. This increases the jamming rate under such conditions. Moreover, after jamming, a combined treatment method of "reverse rotation + high-pressure water flushing" is required, which takes a long time on average. More seriously, frequent jamming can cause a sudden increase in drill rod torque, leading to fatigue fracture of the drill rod joint threads. In addition, the fissure water in the fracture zone can muddy the rock debris, forming a "pasty blockage," which further increases the cuttings removal resistance and reduces the cuttings removal efficiency of traditional spiral cuttings removal structures, exacerbating the risk of jamming. 2. In hard sandstone formations, due to the high density and low porosity of these formations, the rock has a high brittleness index, posing a dual challenge to conventional drilling methods. Existing vibratory drills generally have low longitudinal impact force and insufficient impact energy density, which cannot overcome the shear strength of hard rock. As a result, a single impact can only break small-diameter rock blocks, resulting in low drilling efficiency. To maintain drilling, the equipment needs to continuously output high power, and the axial pressure on the drill rod is large, exceeding the allowable pressure, which causes the drill rod to bend and deform, and the scrap rate is much higher than in soft rock formations. At the same time, hard rock causes greater abrasive wear on the drill bit, requiring frequent shutdowns to replace the drill bit, further reducing the operating efficiency and delaying the progress of the mining face. Therefore, we propose a coal mining drilling rig that combines drilling and multi-directional impact to prevent stuck drills and its usage method. Summary of the Invention

[0006] The purpose of this invention is to provide a coal mining drilling rig that combines drilling and multi-directional impact protection, as well as its method of use, to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a coal mining drilling rig with both drilling and multi-directional impact capabilities, comprising: Drilling rig body; A high-pressure drive mechanism is mounted on the drilling rig body via a multi-guide rail mechanism. A drilling mechanism, wherein the drilling assembly is connected to the high-pressure drive mechanism; A high-frequency lateral vibration mechanism, which is connected to the high-pressure drive mechanism and the drilling assembly; A longitudinal vibration and impact mechanism is mounted on the drilling mechanism.

[0008] Preferably, the high-pressure drive mechanism includes a housing, a high-pressure air compressor, a high-pressure gas delivery pipe, a drive spindle, a driving bevel gear, and a driven drilling gear; The outer shell is connected to the multi-guide rail on the drilling rig body, the high-pressure air compressor is installed on the drilling rig body, and the output end of the high-pressure air compressor is connected to the pneumatic motor inside the outer shell through the high-pressure gas delivery pipe. The output end of the pneumatic motor is connected to the driving bevel gear through the drive spindle, the driven drilling gear is meshed with the driving bevel gear, and the drilling mechanism is mounted on the driven drilling gear.

[0009] Preferably, a reset damping spring is provided on the drive spindle, one end of the reset damping spring abuts against the boss on the inner wall of the gearbox, and the other end of the reset damping spring is connected to the drive spindle through a retaining ring.

[0010] Preferably, the multi-guide rail mechanism includes guide rails and connecting brackets; The guide rails are provided in two parallel positions on the drilling rig body. The connecting bracket is guided and slidably disposed on the two guide rails, and the outer shell is disposed on the connecting bracket. An angle scale is provided on the guide rail, and the main body of the drilling rig is connected to the guide rail by four multi-directional rollers with locking components.

[0011] Preferably, the drilling mechanism includes a drill rod and a drill bit; The drill rod is mounted on the driven drilling gear, and the drill bit is mounted at the bottom of the drill rod via a connecting end.

[0012] Preferably, the high-frequency transverse vibration mechanism includes a drive subshaft, a driven bevel gear, an eccentric wheel, a transmission linkage assembly, a horizontal transmission linkage, a fixed rod, a fixed sleeve, and a transverse vibration rod; The driven bevel gear is meshed with the driving bevel gear through the drive shaft, the eccentric wheel is keyed and mounted on the drive shaft, and the two ends of the drive shaft are set in the housing through rolling bearings; One end of the transmission linkage assembly is connected to the edge of the eccentric wheel via a universal joint, and the other end of the transmission linkage assembly is hinged to the middle of the horizontal transmission linkage via a pin. The fixed sleeve is fixedly installed inside the outer casing. The fixed rod is connected to the transmission linkage assembly. The transverse vibration rod is sleeved inside the fixed sleeve, and one end of the transverse vibration rod is connected to the fixed rod, while the other end of the transverse vibration rod is connected to the drill rod.

[0013] Preferably, the longitudinal vibration impact mechanism includes an active ratchet, a driven ratchet, and a spring; The active ratchet is splined on the drill rod, the driven ratchet is mounted on the sliding bracket, the sliding bracket is slidably connected to the guide rail via a slider, the spring is sleeved on the drill rod, one end of the spring is connected to the end face of the active ratchet, and the other end of the spring is connected to the sliding bracket.

[0014] Preferably, the spring is a cylindrical helical compression spring; In the natural drilling state, the spring is in the naturally extended state, the driving ratchet and the driven ratchet are in the separated state, and the distance between the driving ratchet and the driven ratchet is 100-200mm; Under longitudinal vibration and impact conditions, the spring is in a compressed and tightened state, and the driving ratchet and the driven ratchet are in a meshing state.

[0015] Preferably, the drilling rig body is provided with a drilling rig control console, and the high-pressure drive mechanism, the high-frequency transverse vibration mechanism and the longitudinal vibration impact mechanism are all connected to the drilling rig control console.

[0016] A method for using a coal mining drilling rig that combines drilling and multi-directional impact functions to prevent stuck drill bits includes the following steps: A: Preparations before drilling: According to the specific requirements of drilling operations on the top and bottom plates of mining, determine the location, direction and depth of the borehole, select a suitable drill bit according to the geological conditions, and install it on the drill rod through the connecting end, and preset the vibration frequency and amplitude parameters of the high-frequency transverse vibration mechanism on the drilling rig control console; B. Drilling treatment: To start the high-pressure drive mechanism, first adjust the gas pressure of the high-pressure air compressor. Once the gas pressure is stable, start the pneumatic motor. The pneumatic motor rotates, driving the drive spindle, which in turn drives the active bevel gear, which in turn drives the driven drilling gear, causing the drill rod and drill bit to start rotating and drilling. At the same time, the high-frequency transverse vibration mechanism starts. The eccentric wheel rotates through the drive sub-shaft and the driven bevel gear. Under the action of high-pressure air, it drives the pneumatic motor to rotate at high speed. The speed changes with the air pressure. The centrifugal force generated by the eccentric wheel is transmitted through the transmission linkage assembly, driving the transverse vibration rod to reciprocate in the fixed sleeve through the linkage of the fixed rod and the transmission linkage assembly, thereby causing the drill rod and drill bit to generate transverse high-frequency vibration. C. Special working condition handling: When encountering hard rock or stuck drill bit, the drill bit experiences significant resistance, which compresses the spring of the longitudinal vibration impact mechanism, causing the active and driven ratchet to mesh and connect, generating longitudinal vibration impact force. The longitudinal vibration, together with the lateral high-frequency vibration and rotary drilling, rapidly breaks up the hard rock, allowing drilling operations to continue. During the vibration process, the reset damping spring plays a role in compensating for the axial displacement of the active bevel gear and the driven drilling gear, ensuring the normal operation of the high-pressure drive mechanism. D. Multi-directional drilling adjustment: If it is necessary to change the drilling direction, the drilling rig control console is operated. The control console moves four multi-directional rollers with locking components, and the overall position and angle of the drilling rig are adjusted by the guide rail to achieve multi-directional drilling operations and meet different drilling needs. E. Drilling operation completed: After drilling reaches the preset depth, the high-frequency lateral vibration mechanism, high-pressure drive mechanism, and high-pressure air compressor are shut down in sequence. The shutdown order is "stop vibration first, then stop rotation, and finally stop high-pressure air compressor" to avoid instantaneous pressure changes from impacting the coal mining drill. The drill rod and drill bit are then removed from the borehole to complete the drilling operation.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. Effectively prevents drill bit jamming: The vibration generated by the high-frequency transverse vibration mechanism can promptly remove rock debris from the borehole, reducing the pressure of debris on the drill rod and drill bit, while also reducing the friction between the drill bit and the rock; the impact force of the longitudinal vibration impact mechanism can break hard rocks, preventing the drill bit from getting stuck due to excessive resistance from hard rock, greatly improving the adaptability of the drilling rig under complex geological conditions. 2. Improve drilling efficiency: It combines rotary drilling, high-frequency vibration and impact functions, which can quickly break rocks, reduce downtime and troubleshooting time during drilling, and improve drilling efficiency by more than 30% compared with traditional drilling rigs. 3. Compact structure and easy operation: The overall structure is reasonably designed and occupies little space, with the whole machine occupying an area of ​​<5m²; the operating parameters of the high-frequency vibration device can be easily adjusted through the control system to meet the needs of different working conditions; 4. Reduce equipment wear: Effectively prevents drill jamming, reduces equipment damage such as drill rod breakage and drill bit wear caused by drill jamming, extends equipment service life, and reduces equipment maintenance costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural schematic diagram of the drilling mechanism and longitudinal vibration impact mechanism of the present invention; Figure 3 This is a partial structural schematic diagram of the high-voltage drive mechanism of the present invention; Figure 4 This is a partial structural schematic diagram of the high-frequency transverse vibration mechanism of the present invention; Figure 5 This is a partial structural schematic diagram of the high-frequency transverse vibration mechanism of the present invention.

[0019] In the diagram: 1. Drilling rig body; 2. High-pressure drive mechanism; 201. Outer shell; 202. High-pressure air compressor; 203. High-pressure gas delivery pipe; 204. Drive spindle; 205. Driving bevel gear; 206. Driven drilling gear; 207. Reset damping spring; 3. Multi-directional guide rail mechanism; 301. Guide rail; 302. Connecting bracket; 4. Drilling mechanism; 401. Drill rod; 402. Drill bit; 403. Connecting end; 5. High-frequency transverse vibration mechanism; 501. Drive sub-spindle; 502. Driven bevel gear; 503. Eccentric wheel; 504. Transmission linkage assembly; 505. Horizontal transmission linkage; 506. Fixed rod; 507. Fixed sleeve; 508. Transverse vibration rod; 6. Longitudinal vibration impact mechanism; 601. Driving ratchet; 602. Driven ratchet; 603. Spring; 7. Drilling rig control console. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-5 The present invention provides a coal mining drilling rig with both drilling and multi-directional impact protection against stuck drill bits, comprising: Drilling rig body 1; A high-pressure drive mechanism 2 is mounted on the drilling rig body 1 via a multi-guide rail mechanism 3. The high-pressure drive mechanism 2 includes a housing 201, a high-pressure air compressor 202, a high-pressure gas delivery pipe 203, a drive spindle 204, a driving bevel gear 205, and a driven drilling gear 206. The housing 201 is connected to the multi-guide rail 3 on the drilling rig body 1. The high-pressure air compressor 202 is mounted on the drilling rig body 1. The output end of the high-pressure air compressor 202 is connected to a pneumatic motor inside the housing 201 via the high-pressure gas delivery pipe 203. The output end of the pneumatic motor is connected to the driving bevel gear 205 via the drive spindle 204. The driven drilling gear 206 meshes with the driving bevel gear 205. A drilling mechanism 4 is mounted on the driven drilling gear 206. The high-pressure air compressor 202 is a screw air compressor, which is connected to a pneumatic motor through a high-pressure gas delivery pipe 203 with a diameter of 50mm. The speed of the pneumatic motor is adjusted by a proportional valve to achieve stepless speed regulation. The multi-directional guide rail mechanism 3 includes guide rails 301 and connecting brackets 302; there are two guide rails 301, which are arranged in parallel on the drilling rig body 1; the connecting brackets 302 are guided and slidably arranged on the two guide rails 301; the outer shell 201 is arranged on the connecting brackets 302; an angle scale is provided on the guide rails 301; the drilling rig body 1 is connected to the guide rails 301 through four multi-directional rollers with locking components. The guide rail 301 consists of two parallel H-shaped steel guide rails with a length of 2-4m. The guide rails are equipped with an angle scale (0-360°). The main body of the drilling rig is connected to the guide rails through four rollers with locking devices, thereby enabling lateral adjustment and longitudinal movement. The bottom of the guide rails is fixed by expansion bolts with a fixing point spacing of 1m. The drilling mechanism 4 and the drilling assembly 4 are connected to the high-pressure drive mechanism 2. The drilling mechanism 4 includes a drill rod 401 and a drill bit 402. The drill rod 401 is mounted on the driven drilling gear 206, and the drill bit 402 is mounted at the bottom of the drill rod 401 via a connecting end 403. Drill pipe 401 is made of high-strength alloy material, specifically 35CrNiMo alloy structural steel. After quenching and tempering, its hardness reaches HRC35-40. It has a diameter of 80-150mm and a length of 1.5-3m / section. Sections are connected by trapezoidal threads with a thread length of 100-150mm. Drill bit 402 can be replaced according to different geological conditions. For soft rock formations, a one-piece alloy cutting drill bit can be selected, while for hard rock formations, a ball-tooth tungsten carbide drill bit can be selected. A high-frequency lateral vibration mechanism 5 is connected to the high-pressure drive mechanism 2 and the drilling assembly 4. The high-frequency lateral vibration mechanism 5 includes a drive sub-shaft 501, a driven bevel gear 502, an eccentric wheel 503, a transmission connecting rod assembly 504, a horizontal transmission connecting rod 505, a fixed rod 506, a fixed sleeve 507, and a lateral vibration rod 508. The driven bevel gear 502 is meshed with the driving bevel gear 205 through the drive sub-shaft 501. The eccentric wheel 503 is keyed and fitted onto the drive sub-shaft 501. The drive sub-shaft 501 has two... The end is set inside the outer shell 201 by a rolling bearing; one end of the transmission link assembly 504 is connected to the edge of the eccentric wheel 503 by a universal joint, and the other end of the transmission link assembly 504 is hinged to the middle of the horizontal transmission link 505 by a pin. The fixed sleeve 507 is fixedly set inside the outer shell 201. The fixed rod 506 is connected to the transmission link assembly 504. The transverse vibration rod 508 is sleeved in the fixed sleeve 507, and one end of the transverse vibration rod 508 is connected to the fixed rod 506. The other end of the transverse vibration rod 508 is connected to the drill rod 401. Amplitude adjustment is achieved by replacing the eccentric wheel 503 with different eccentricities (5-15mm); The longitudinal vibration and impact mechanism 6 is mounted on the drilling mechanism 4. The longitudinal vibration and impact mechanism 6 includes a driving ratchet 601, a driven ratchet 602, and a spring 603. The driving ratchet 601 is mounted on the drill rod 401 via a spline, and the driven ratchet 602 is mounted on a sliding bracket. The sliding bracket is slidably connected to the guide rail 301 via a slider. The spring 603 is sleeved on the drill rod 401. One end of the spring 603 is connected to the end face of the driving ratchet 601, and the other end of the spring 603 is connected to the sliding bracket. The spring 603 is a cylindrical helical compression spring. In the natural drilling state, the spring 603 is in the naturally extended state, the driving ratchet 601 and the driven ratchet 602 are in the separated state, and the distance between the driving ratchet 601 and the driven ratchet 602 is 100-200mm. Under longitudinal vibration and impact conditions, the spring 603 is in a compressed and tightened state, and the driving ratchet 601 and the driven ratchet 602 are in a meshing state. The driving ratchet 601 and driven ratchet 602 have asymmetrical trapezoidal teeth with a tooth surface hardness of HRC55-60. During engagement, the single impact stroke is 10-20 mm, and the maximum impact force can reach 80 kN. The impact frequency is automatically adjusted according to the compression of spring 603. Spring 603 has a stiffness coefficient of 50-100 N / mm and a free length of 100-200 mm, ensuring a fatigue life >10 years under impact. 6 Second-rate; The drilling rig body 1 is equipped with a drilling rig control console 7. The high-pressure drive mechanism 2, the high-frequency transverse vibration mechanism 5 and the longitudinal vibration impact mechanism 6 are all connected to the drilling rig control console 7.

[0022] In this embodiment, a reset damping spring 207 is provided on the drive spindle 204. One end of the reset damping spring 207 abuts against the boss on the inner wall of the gearbox, and the other end of the reset damping spring 207 is connected to the drive spindle 204 through a retaining ring. The reset damping spring 207 is made of silicon manganese spring steel with a wire diameter of 8-12mm, an effective number of 5-8 turns, a working deformation of 3-10mm, and a preload of 5-10kN during assembly to ensure that the gear meshing clearance is maintained at 0.1-0.2mm, which can compensate for the axial displacement of the gear caused by vibration.

[0023] The method of using the anti-jamming coal mining drilling rig that combines drilling and multi-directional impact provided by the present invention includes the following steps: A: Preparations before drilling: According to the specific requirements of drilling operations on the top and bottom plates of mining, the drilling location, direction and depth are determined, a suitable drill bit 402 is selected according to the geological conditions, and it is installed on the drill rod 401 through the connecting end 403. The vibration frequency and amplitude parameters of the high-frequency transverse vibration mechanism 5 are preset on the drilling rig control console 7. B. Drilling treatment: Start the high-pressure drive mechanism 2. First, adjust the gas pressure of the high-pressure air compressor 202. After the gas pressure stabilizes, start the pneumatic motor. The pneumatic motor rotates and drives the drive spindle 204, which in turn drives the active bevel gear 205 to rotate, which in turn drives the driven drilling gear 206 to rotate, so that the drill rod 401 and the drill bit 402 start to rotate and drill. At the same time, the high-frequency transverse vibration mechanism 5 is started. The eccentric wheel 503 drives the drive sub-shaft 501 and the driven bevel gear 502 to rotate. Under the action of high-pressure air, it drives the pneumatic motor to rotate at high speed. The speed changes with the air pressure. The centrifugal force generated by the eccentric wheel 503 is transmitted through the transmission linkage assembly 504, which drives the transverse vibration rod 508 to reciprocate in the fixed sleeve 507 through the linkage transmission of the fixed rod 506 and the transmission linkage assembly 504. This causes the drill rod 401 and the drill bit 402 to generate transverse high-frequency vibration. This vibration reduces the friction between the drill bit 502 and the rock, which helps to break the rock and prevent the accumulation of debris. C. Special working condition handling: When encountering hard rock or when the drill bit gets stuck, the drill bit 402 experiences significant resistance, which compresses the spring 603 of the longitudinal vibration impact mechanism 6, causing the active ratchet 601 and the driven ratchet 602 to mesh and connect, generating a longitudinal vibration impact force. The longitudinal vibration, combined with the transverse high-frequency vibration and rotary drilling, rapidly breaks up the hard rock, allowing the drilling operation to continue. During the vibration process, the reset damping spring 207 plays a role in compensating for the axial displacement of the active bevel gear 205 and the driven drilling gear 206, ensuring the normal operation of the high-pressure drive mechanism 2 and preventing the vibration process from being interrupted due to the gears not engaging properly because of the vibration. D. Multi-directional drilling adjustment: If it is necessary to change the drilling direction, the drilling rig control console 7 is operated. The drilling rig control console 7 controls the movement of four multi-directional rollers with locking components, and uses the guide rail 301 to adjust the overall position and angle of the drilling rig to achieve multi-directional drilling operations and meet different drilling needs. E. Drilling operation completed: After drilling reaches the preset depth, the high-frequency transverse vibration mechanism 5, the high-pressure drive mechanism 2, and the high-pressure air compressor 202 are shut down in sequence. The shutdown order is "stop vibration first, then stop rotation, and finally stop high-pressure air compressor" to avoid instantaneous pressure changes from impacting the coal mining drill. The drill rod 401 and drill bit 402 are then removed from the borehole to complete the drilling operation.

[0024] When the drilling rig of this invention is working, the high-pressure drive mechanism 2 drives the drill rod 401 and drill bit 402 to rotate and drill. The high-frequency transverse vibration mechanism 5 synchronously generates transverse high-frequency vibration, which reduces the friction between the drill bit and the rock and prevents the accumulation of debris, thus achieving efficient slag removal. When encountering hard rock or getting stuck, the longitudinal vibration impact mechanism 6 triggers longitudinal vibration. Through the coordinated work of transverse and longitudinal vibration, the impact and anti-getting-stuck functions are achieved. At the same time, multi-directional drilling operations can be realized, effectively solving the problem of getting stuck under complex geological conditions, improving drilling efficiency and equipment reliability. It is suitable for drilling operations in mining roof and floor, sidewalls, etc. It has the following technical effects: 1. Effectively prevents drill bit jamming: The vibration generated by the high-frequency transverse vibration mechanism 5 can promptly discharge rock debris from the borehole, reducing the pressure of debris on the drill rod and drill bit, while also reducing the friction between the drill bit and the rock; the impact force of the longitudinal vibration impact mechanism 6 can break hard rocks, preventing the drill bit from getting stuck due to excessive resistance from hard rock, and greatly improving the adaptability of the drilling rig under complex geological conditions. 2. Improve drilling efficiency: It combines rotary drilling, high-frequency vibration and impact functions, which can quickly break rocks, reduce downtime and troubleshooting time during drilling, and improve drilling efficiency by more than 30% compared with traditional drilling rigs. 3. Compact structure and easy operation: The overall structure is reasonably designed and occupies little space, with the whole machine occupying an area of ​​<5m²; the operating parameters of the high-frequency vibration device can be easily adjusted through the control system to meet the needs of different working conditions; 4. Reduce equipment wear: Effectively prevents drill jamming, reduces equipment damage such as drill rod breakage and drill bit wear caused by drill jamming, extends equipment service life, and reduces equipment maintenance costs.

[0025] 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 coal mining drilling rig with both drilling and multi-directional impact capabilities, characterized in that: include: Drilling rig body (1); High-pressure drive mechanism (2), which is mounted on the drilling rig body (1) via a multi-guide rail mechanism (3); Drilling mechanism (4), the drilling assembly (4) is connected to the high-pressure drive mechanism (2); A high-frequency lateral vibration mechanism (5) is connected to the high-pressure drive mechanism (2) and the drilling assembly (4); Longitudinal vibration impact mechanism (6) is provided on the drilling mechanism (4).

2. The anti-jamming coal mining drill rig that combines drilling and multi-directional impact as described in claim 1, characterized in that: The high-pressure drive mechanism (2) includes a housing (201), a high-pressure air compressor (202), a high-pressure gas delivery pipe (203), a drive spindle (204), a driving bevel gear (205), and a driven drilling gear (206). The outer shell (201) is connected to the multi-guide rail (3) on the drilling rig body (1), the high-pressure air compressor (202) is installed on the drilling rig body (1), and the output end of the high-pressure air compressor (202) is connected to the pneumatic motor inside the outer shell (201) through the high-pressure gas delivery pipe (203). The output end of the pneumatic motor is connected to the driving bevel gear (205) through the drive spindle (204), the driven drilling gear (206) is meshed with the driving bevel gear (205), and the drilling mechanism (4) is mounted on the driven drilling gear (206).

3. The anti-jamming coal mining drill rig that combines drilling and multi-directional impact as described in claim 2, characterized in that: A reset damping spring (207) is provided on the drive spindle (204). One end of the reset damping spring (207) abuts against the boss on the inner wall of the gearbox, and the other end of the reset damping spring (207) is connected to the drive spindle (204) through a retaining ring.

4. A coal mining drilling rig with both drilling and multi-directional impact capabilities as described in claim 2, characterized in that: The multi-guide rail mechanism (3) includes a guide rail (301) and a connecting bracket (302). Two guide rails (301) are provided, and the two guide rails (301) are arranged in parallel on the drilling rig body (1). The connecting bracket (302) is guided and slidably arranged on the two guide rails (301). The outer shell (201) is arranged on the connecting bracket (302). An angle scale is provided on the guide rail (301), and the drilling rig body (1) is connected to the guide rail (301) through four multi-directional rollers with locking components.

5. A coal mining drilling rig with both drilling and multi-directional impact capabilities as described in claim 2, characterized in that: The drilling mechanism (4) includes a drill rod (401) and a drill bit (402). The drill rod (401) is mounted on the driven drilling gear (206), and the drill bit (402) is mounted on the bottom of the drill rod (401) via a connecting end (403).

6. A coal mining drilling rig with both drilling and multi-directional impact capabilities as described in claim 5, characterized in that: The high-frequency transverse vibration mechanism (5) includes a drive subshaft (501), a driven bevel gear (502), an eccentric wheel (503), a transmission link assembly (504), a horizontal transmission link (505), a fixed rod (506), a fixed sleeve (507), and a transverse vibration rod (508). The driven bevel gear (502) is meshed with the driving bevel gear (205) through the drive sub-shaft (501), the eccentric wheel (503) is keyed and mounted on the drive sub-shaft (501), and the two ends of the drive sub-shaft (501) are set in the housing (201) through rolling bearings; One end of the transmission link assembly (504) is connected to the edge of the eccentric wheel (503) via a universal joint, and the other end of the transmission link assembly (504) is hinged to the middle of the horizontal transmission link (505) via a pin. The fixed sleeve (507) is fixedly installed inside the outer shell (201). The fixed rod (506) is connected to the transmission link assembly (504). The transverse vibration rod (508) is sleeved inside the fixed sleeve (507), and one end of the transverse vibration rod (508) is connected to the fixed rod (506), and the other end of the transverse vibration rod (508) is connected to the drill rod (401).

7. A coal mining drilling rig with both drilling and multi-directional impact capabilities as described in claim 5, characterized in that: The longitudinal vibration impact mechanism (6) includes an active ratchet (601), a driven ratchet (602), and a spring (603). The active ratchet (601) is splined on the drill rod (401), the driven ratchet (602) is mounted on the sliding bracket, the sliding bracket is slidably connected to the guide rail (301) via a slider, the spring (603) is sleeved on the drill rod (401), one end of the spring (603) is connected to the end face of the active ratchet (601), and the other end of the spring (603) is connected to the sliding bracket.

8. A coal mining drilling rig with both drilling and multi-directional impact capabilities as described in claim 7, characterized in that: The spring (603) is a cylindrical helical compression spring; In the natural drilling state, the spring (603) is in the naturally extended state, the driving ratchet (601) and the driven ratchet (602) are in the separated state, and the distance between the driving ratchet (601) and the driven ratchet (602) is 100-200mm; Under longitudinal vibration and impact conditions, the spring (603) is in a compressed and tightened state, and the driving ratchet (601) and the driven ratchet (602) are in a meshing state.

9. A coal mining drilling rig with both drilling and multi-directional impact capabilities as described in claim 1, characterized in that: The drilling rig body (1) is equipped with a drilling rig control console (7), and the high-pressure drive mechanism (2), the high-frequency transverse vibration mechanism (5) and the longitudinal vibration impact mechanism (6) are all connected to the drilling rig control console (7).

10. A method of using a coal mining drill rig with both drilling and multi-directional impact capabilities as described in any one of claims 1-9, characterized in that, Includes the following steps: A: Preparations before drilling: According to the specific requirements of drilling operations on the top and bottom plates of mining, determine the drilling location, direction and depth, select a suitable drill bit (402) based on geological conditions, and install it on the drill rod (401) through the connecting end (403), and preset the vibration frequency and amplitude parameters of the high-frequency transverse vibration mechanism (5) on the drilling rig control console (7); B. Drilling treatment: Start the high-pressure drive mechanism (2), first adjust the gas pressure of the high-pressure air compressor (202), and start the pneumatic motor after the gas pressure stabilizes. The pneumatic motor rotates and drives the drive spindle (204) to rotate, which in turn drives the active bevel gear (205) to rotate, which in turn drives the driven drilling gear (206) to rotate, so that the drill rod (401) and drill bit (402) start to rotate and drill. At the same time, the high-frequency transverse vibration mechanism (5) starts. The eccentric wheel (503) rotates through the drive sub-shaft (501) and the driven bevel gear (502). Under the action of high-pressure air, it drives the pneumatic motor to rotate at high speed. The speed changes with the air pressure. The centrifugal force generated by the eccentric wheel (503) is transmitted through the transmission linkage assembly (504), which drives the transverse vibration rod (508) to reciprocate in the fixed sleeve (507) under the linkage transmission of the fixed rod (506) and the transmission linkage assembly (504), which in turn causes the drill rod (401) and drill bit (402) to generate transverse high-frequency vibration. C. Special working condition handling: When encountering hard rock or when the drill bit gets stuck, the drill bit (402) experiences significant resistance, which compresses the spring (603) of the longitudinal vibration impact mechanism (6), causing the active ratchet (601) and the driven ratchet (602) to mesh and connect, generating longitudinal vibration impact force. The longitudinal vibration, combined with the transverse high-frequency vibration and rotary drilling, rapidly breaks the hard rock, and the drilling operation continues. During the vibration process, the reset damping spring (207) plays a role in compensating for the axial displacement of the active bevel gear (205) and the driven drilling gear (206), ensuring the normal operation of the high-pressure drive mechanism (2). D. Multi-directional drilling adjustment: If it is necessary to change the drilling direction, the drilling rig control console (7) is operated. The drilling rig control console (7) controls the movement of four multi-directional rollers with locking components, and uses the guide rail (301) to adjust the overall position and angle of the drilling rig to achieve multi-directional drilling operations and meet different drilling needs. E. Drilling operation completed: After drilling reaches the preset depth, the high-frequency transverse vibration mechanism (5), high-pressure drive mechanism (2) and high-pressure air compressor (202) are shut down in sequence. The shutdown sequence is "stop vibration first → stop rotation then → stop high-pressure air compressor last" to avoid instantaneous pressure changes from impacting the coal mining drill. The drill rod (401) and drill bit (402) are removed from the borehole to complete the drilling operation.

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