A mine rock drilling rig

Abstract

The application discloses a mine rock drilling equipment, and relates to the technical field of mine mechanical equipment, which comprises a diamond drill bit and a connecting sleeve, and further comprises a buffer mechanism, wherein the buffer mechanism comprises an adjusting plate which is slidably connected to the inner wall of the connecting sleeve, a circular plate which is slidably connected to the inner wall of the connecting sleeve, a plurality of first springs which are fixedly connected between the adjusting plate and the circular plate, a hollow rotating shaft which is rotatably connected to the upper end of the circular plate, and a friction plate which is fixedly connected to the upper end of the hollow rotating shaft. In the application, the working state of the diamond drill bit can be adjusted according to the hardness of the rock, the drilling pressure and the drilling effect of the diamond drill bit can be ensured when the rock with low hardness is drilled, the axial pressure makes the friction force exceed the threshold value when the rock with high hardness is encountered, the subsequent mechanical action is triggered, the spring stroke is released, the flexible buffer is provided, the qualitative change from the passive fixed buffer to the active adaptive buffer is realized, and the core contradiction that the soft rock needs rigidity and the hard rock needs buffer is solved.

Description

Technical Field

[0001] This invention relates to the field of mining machinery and equipment technology, and in particular to a rock drilling device for mining. Background Technology

[0002] In mining operations, rock drilling is a core and high-intensity operation. Diamond drill bits, due to their extremely high hardness and wear resistance, have become a key tool for breaking medium-hard to extremely hard rock formations. They are usually connected to the output shaft of power units such as hydraulic rock drills, down-the-hole drills, or rotary drilling rigs through a connecting mechanism to withstand and transmit huge torques, axial pressures, and complex impact loads.

[0003] Current mining rock drilling equipment and drill bit connection technologies still face the following problems when dealing with complex and variable geological conditions: First, to address the impact issue, some equipment uses buffer elements such as preloaded springs, rubber dampers, or hydraulic buffers. However, these are passive buffers, and their parameters are fixed once set. In soft rock or fractured rock formations, high-rigidity connections are needed to ensure sufficient thrust, prevent slippage, and improve drilling efficiency. However, passive buffering will result in some thrust loss and reduced efficiency. In hard rock or homogeneous intact rock formations, sufficient buffer stroke is required to absorb impact. However, buffers with fixed parameters may have insufficient stroke and limited protection. This contradiction between pressure loss in soft rock and insufficient buffering in hard rock restricts the overall performance of the equipment across the entire rock formation range. Second, in mining underground and other work sites with limited space and harsh environments, frequent drill bit changes are common. Traditional threaded connections require special tools and a large operating space, making disassembly and assembly time-consuming and labor-intensive, which seriously affects pure drilling time and overall work efficiency.

[0004] Based on this, we propose a rock drilling device for mining. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution: A rock drilling device for mining includes a diamond drill bit and a connecting sleeve, and also includes a buffer mechanism; The buffer mechanism includes an adjusting plate slidably connected to the inner wall of the connecting sleeve, an annular plate slidably connected to the inner wall of the connecting sleeve, a plurality of first springs fixedly connected between the adjusting plate and the annular plate, a hollow rotating shaft rotatably connected to the upper end of the annular plate, a friction plate fixedly connected to the upper end of the hollow rotating shaft, a drive plate fixedly connected to the lower end of the diamond drill bit, a lead screw rotatably connected to the bottom of the connecting sleeve, the side wall of the lead screw being threadedly connected to the adjusting plate, a cavity being formed inside the connecting sleeve, a rotating rod rotatably connected to the inner wall of the cavity, a driving wheel fixedly connected to the lower end of the rotating rod, a driven wheel being fixedly connected to the lower end of the lead screw extending to the inner wall of the cavity, the driving wheel being connected to the driven wheel via a synchronous belt, and a torsion spring fixedly sleeved on the side wall of the lead screw, the two ends of the torsion spring being fixedly connected to the top of the cavity and the upper end of the driven wheel, respectively. A drive mechanism is installed inside the connecting sleeve.

[0006] Preferably, two limiting rods are symmetrically fixedly connected to the bottom of the connecting sleeve, and the side walls of the two limiting rods are slidably connected to the adjusting plate and the annular plate.

[0007] Preferably, the drive mechanism includes a mounting cavity formed in the inner wall of the connecting sleeve, the upper end of the rotating rod extends into the mounting cavity and is fixedly connected to a cylindrical gear, and a toothed ring is fixedly connected to the side wall of the friction plate, the toothed ring meshing with the cylindrical gear.

[0008] Preferably, a cooling mechanism is installed on the connecting sleeve, the cooling mechanism includes a cooling cavity opened in the connecting sleeve, a heat-conducting sleeve is fixedly connected to the side wall of the diamond drill bit, a pumping chamber is opened in the connecting sleeve, a sliding plug is slidably connected to the inner wall of the pumping chamber, an annular liquid storage tank is fixedly connected to the side wall of the connecting sleeve, the pumping chamber is connected to the annular liquid storage tank through a one-way liquid inlet pipe, and the pumping chamber is connected to the cooling cavity through a one-way liquid outlet pipe.

[0009] Preferably, the cooling mechanism further includes a pin eccentrically fixedly connected to the lower end of the driven wheel, a connecting rod rotatably connected to the side wall of the pin, a driving rod fixedly connected to the side wall of the slide plug, and one end of the driving rod extending into the cavity and rotatably connected to the connecting rod.

[0010] Preferably, the inner wall of the cooling chamber is provided with a plurality of drain holes, and a pressure relief valve is installed on the inner wall of each of the plurality of drain holes.

[0011] Preferably, the connecting sleeve is equipped with a connecting mechanism, which includes a plurality of mounting grooves formed on the side wall of the connecting sleeve, and a positioning plate is slidably connected to the inner wall of each mounting groove.

[0012] Preferably, the connecting mechanism further includes multiple sliding grooves formed on the side wall of the connecting sleeve, multiple sliders are slidably connected to the inner walls of the multiple sliding grooves, and a sliding sleeve is fixedly connected to the side walls of the multiple sliders. Multiple push rods are rotatably connected to the lower end of the sliding sleeve, and the other end of the push rod is rotatably connected to the side wall of the positioning plate. A sliding rod is fixedly connected to the inner wall of the sliding groove, and the side wall of the sliding rod is slidably connected to the slider. A second spring is sleeved on the side wall of the sliding rod, and the two ends of the second spring are fixedly connected to the upper end of the slider and the top of the inner wall of the sliding groove, respectively.

[0013] Preferably, the side wall of the sliding sleeve is threaded with multiple threaded rods, and the side wall of the connecting sleeve is provided with multiple threaded grooves that mate with the threaded rods.

[0014] Preferably, both the connecting sleeve and the heat-conducting sleeve are made of materials with high strength and good thermal conductivity.

[0015] The present invention has the following beneficial effects: 1. This invention converts the differences in rotational speed and axial pressure caused by different rock types during drilling into mechanical control signals. Through the friction pair formed by the drive plate and the friction plate, the system can automatically determine the working conditions. In soft rock layers, the friction force is insufficient to overcome the static friction threshold, and the system maintains rigid locking to ensure axial pressure transmission and guarantee drilling efficiency. In hard rock layers, the increased axial pressure causes the friction force to exceed the threshold, triggering subsequent mechanical actions, releasing the spring stroke, and providing flexible buffering. This achieves a qualitative change from passive fixed buffering to active adaptive buffering, solving the core contradiction that soft rock requires rigidity and hard rock requires buffering. 2. When encountering hard rock impact, the diamond drill bit can make a slight axial retreat, transforming the violent instantaneous impact into a spring compression and release process, forming a flexible collision. This significantly reduces the peak load acting on the diamond drill bit and the entire power transmission chain, effectively preventing diamond drill bit tooth breakage and matrix cracking, and reducing the risk of drill rod thread loosening and bearing damage. This, in turn, extends the life of key vulnerable parts by several times and improves the overall reliability of the equipment. 3. In soft rock conditions, the system is rigidly locked with no pressure loss, maximizing drilling efficiency. In hard rock conditions, it effectively buffers and avoids downtime caused by abnormal damage to diamond drill bits and frequent replacements, ensuring continuous pure drilling time and optimizing overall drilling efficiency. 4. The cooling mechanism and the buffer mechanism are mechanically linked. Cooling only begins when hard rock is encountered and the buffer function is activated. When drilling in soft rock and strong cooling is not required, cooling is completely stopped. This on-demand supply mode can significantly save energy consumption for driving the cooling pump compared to the traditional continuous circulation cooling system, and significantly reduce coolant consumption and thermal pollution, reflecting the green and energy-saving design concept. 5. Through the design of the sliding sleeve, push rod and positioning plate, tool-free one-click quick installation and removal of diamond drill bits is realized. Operators only need to push and pull the sliding sleeve and tighten the anti-loosening screw to complete the locking or releasing, which simplifies the process and shortens the auxiliary operation time. It is especially suitable for occasions with high requirements for operation efficiency, such as underground mines. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a rock drilling equipment for mining proposed in this invention; Figure 2 for Figure 1 A non-three-dimensional schematic diagram of the structure; Figure 3 for Figure 1 Cross-sectional view of the middle structure; Figure 4 for Figure 1 Schematic diagram of the structure of a medium diamond drill bit; Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point A in the diagram; Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point B in the diagram; Figure 7 for Figure 3 Enlarged schematic diagram of the structure at point C; Figure 8 for Figure 3 A magnified schematic diagram of the structure at point D.

[0017] In the diagram: 1. Diamond drill bit; 2. Connecting sleeve; 3. Adjusting plate; 4. Circular ring plate; 5. First spring; 6. Hollow rotating shaft; 7. Friction plate; 8. Drive plate; 9. Lead screw; 10. Cavity; 11. Rotating rod; 12. Driving wheel; 13. Driven wheel; 14. Torsion spring; 15. Limiting rod; 16. Mounting cavity; 17. Cylindrical gear; 18. Gear ring; 19. Heat-conducting sleeve; 20. Cooling cavity; 21. Pumping cavity; 22. Sliding plug; 23. Circular liquid storage tank; 24. One-way liquid inlet pipe; 25. One-way liquid outlet pipe; 26. Pin; 27. Connecting rod; 28. Drive rod; 29. ​​Mounting groove; 30. Positioning plate; 31. Sliding groove; 32. Sliding block; 33. Sliding sleeve; 34. Push rod; 35. Second spring; 36. Threaded rod; 37. Sliding rod; 38. Drain hole. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Reference Figures 1-8 A rock drilling device for mining includes a diamond drill bit 1 and a connecting sleeve 2. The diamond drill bit 1 is equipped with composite cutting teeth and diamond composite plates (such as...). Figure 4 As shown), the connecting sleeve 2 can be fixed to the output shaft of the drilling rig by welding or other means. The output shaft of the drilling rig can be driven by components such as a motor, which is the existing technology. It also includes a buffer mechanism. The buffer mechanism includes an adjusting plate 3 slidably connected to the inner wall of the connecting sleeve 2, a circular ring plate 4 slidably connected to the inner wall of the connecting sleeve 2, multiple first springs 5 ​​fixedly connected between the adjusting plate 3 and the circular ring plate 4, a hollow rotating shaft 6 rotatably connected to the upper end of the circular ring plate 4, a friction plate 7 fixedly connected to the upper end of the hollow rotating shaft 6, a drive plate 8 fixedly connected to the lower end of the diamond drill bit 1, a lead screw 9 rotatably connected to the bottom of the connecting sleeve 2, the side wall of the lead screw 9 being threadedly connected to the adjusting plate 3, a cavity 10 being opened inside the connecting sleeve 2, a rotating rod 11 rotatably connected to the inner wall of the cavity 10, a driving wheel 12 fixedly connected to the lower end of the rotating rod 11, the lower end of the lead screw 9 extending to the inner wall of the cavity 10 and fixedly connected to a driven wheel 13, the driving wheel 12 being connected to the driven wheel 13 via a synchronous belt, and a torsion spring 14 fixedly sleeved on the side wall of the lead screw 9, the two ends of the torsion spring 14 being fixedly connected to the top of the cavity 10 and the upper end of the driven wheel 13, respectively. A drive mechanism is installed inside the connecting sleeve 2.

[0020] Two limiting rods 15 are symmetrically fixedly connected to the bottom of the connecting sleeve 2. The side walls of the two limiting rods 15 are slidably connected to the adjusting plate 3 and the annular plate 4. The limiting rods 15 can limit the position of the adjusting plate 3, so that it cannot rotate and can only move up and down with the lead screw 9.

[0021] The drive mechanism includes a mounting cavity 16 formed in the inner wall of the connecting sleeve 2, the upper end of the rotating rod 11 extends into the mounting cavity 16 and is fixedly connected to a cylindrical gear 17, and a gear ring 18 is fixedly connected to the side wall of the friction plate 7, the gear ring 18 meshing with the cylindrical gear 17.

[0022] Furthermore, during mining drilling, the output shaft of the drill rig drives the connecting sleeve 2 to rotate, which in turn drives the diamond drill bit 1 to rotate, thus performing drilling. During drilling, the diamond drill bit 1 comes into contact with the external rock, generating frictional resistance between them, which reduces the rotational speed of the diamond drill bit 1. This creates a rotational speed difference between the diamond drill bit 1 and the connecting sleeve 2, resulting in relative rotation between the diamond drill bit 1 and the connecting sleeve 2. Consequently, the drive plate 8 and the friction plate 7 rotate relative to each other, generating sliding friction between them. When the diamond drill bit 1 drills into relatively soft rock, the axial reaction force exerted by the rock on the diamond drill bit 1 is smaller. At this time, the drive plate 8 and the connecting sleeve 2 rotate at the same speed, but there is only static friction between the drive plate 8 and the friction plate 7, which is insufficient to drive the friction plate 7 to overcome the resistance torque and rotate. Therefore, the diamond drill bit 1 cannot slide within the connecting sleeve 2, ensuring that the diamond drill bit 1 applies sufficient pressure to the rock, thus guaranteeing the drilling effect.

[0023] When the diamond drill bit 1 encounters a rock with high hardness, as the diamond drill bit 1 continues to advance, the rock will exert an increasingly larger axial reaction force on the diamond drill bit 1. This will cause the pressure exerted by the drive plate 8 on the friction plate 7 to increase, thus increasing the friction. Until the static friction between the drive plate 8 and the friction plate 7 is sufficient to overcome the system resistance torque, the drive plate 8 can then drive the friction plate 7 to rotate, thereby driving the gear ring 18 to rotate, driving the cylindrical gear 17 to rotate, which in turn drives the rotating rod 11 to rotate, driving the driving wheel 12 to rotate, which in turn drives the driven wheel 13 to rotate, driving the lead screw 9 to rotate. This causes the adjusting plate 3 to slide downwards. At this time, the first spring 5, which has been compressed to its limit, will slowly release. The pressure exerted by the drive plate 8 on the friction plate 7 will be partially transferred to the first spring 5, causing the drive plate 8 to push the friction plate 7 to slide, squeezing the first spring 5 and compressing it again. During this process, the diamond drill bit 1 can slide into the connecting sleeve 2, allowing the diamond drill bit 1 to contact the harder rock. The flexible collision effectively protects the diamond drill bit 1 from damage. After drilling through hard rock, the pressure on the diamond drill bit 1 decreases, and the first spring 5 pushes the friction plate 7 upward, which in turn pushes the drive plate 8 upward, causing the diamond drill bit 1 to move upward and reset. During this process, as the first spring 5 gradually releases, it slowly returns to its natural state, and the pressure between the friction plate 7 and the drive plate 8 gradually decreases. At this time, the torsion spring 14 can drive the lead screw 9 to rotate in the opposite direction, which in turn causes the adjusting plate 3 to move upward and reset. The adjusting plate 3 continues to compress the first spring 5. This process continues until the adjusting plate 3, friction plate 7, and drive plate 8 are completely reset. At this time, the first spring 5 returns to its ultimate compression state. Therefore, during drilling, when drilling rocks with low hardness, the drilling pressure and drilling effect of the diamond drill bit 1 can be guaranteed. When encountering rocks with high hardness, the diamond drill bit 1 can move within a small range and make flexible collisions with hard objects, reducing the damage to the diamond drill bit 1.

[0024] It should be noted that the surface of the friction plate 7 is coated with a wear-resistant coating with a high coefficient of friction, such as tungsten carbide, which reduces the impact of wear and oil on the coefficient of friction of the friction plate 7 and ensures the stability of the trigger threshold.

[0025] It should be noted that the thread lift angle of the lead screw 9 is designed to be above the self-locking angle, ensuring that the adjusting plate 3 can push the lead screw 9 to reverse under the action of the first spring 5 when there is no external drive.

[0026] A cooling mechanism is installed on the connecting sleeve 2. The cooling mechanism includes a cooling chamber 20 opened in the connecting sleeve 2. A heat-conducting sleeve 19 is fixedly connected to the side wall of the diamond drill bit 1. A pumping chamber 21 is opened in the connecting sleeve 2. A sliding plug 22 is slidably connected to the inner wall of the pumping chamber 21. An annular reservoir 23 is fixedly connected to the side wall of the connecting sleeve 2. A one-way injection pipe is fixedly connected to the side wall of the annular reservoir 23. Coolant can be injected into the annular reservoir 23 through the one-way injection pipe. The one-way injection pipe only allows coolant to enter the annular reservoir 23. The pumping chamber 21 is connected to the annular reservoir 23 through a one-way inlet pipe 24. The one-way inlet pipe 24 only allows coolant in the annular reservoir 23 to enter the pumping chamber 21. The pumping chamber 21 is connected to the cooling chamber 20 through a one-way outlet pipe 25. The one-way outlet pipe 25 only allows coolant in the pumping chamber 21 to enter the cooling chamber 20.

[0027] Both the connecting sleeve 2 and the heat-conducting sleeve 19 are made of materials with high strength and good thermal conductivity.

[0028] The cooling mechanism also includes a pin 26 that is eccentrically fixed to the lower end of the driven wheel 13. A connecting rod 27 is rotatably connected to the side wall of the pin 26. A drive rod 28 is fixedly connected to the side wall of the slide plug 22. One end of the drive rod 28 extends into the cavity 10 and is rotatably connected to the connecting rod 27.

[0029] Furthermore, for rocks with low hardness, the frictional resistance between the diamond drill bit 1 and the drill bit is small, resulting in less heat generation. Therefore, there is no need for additional heat dissipation for the diamond drill bit 1. For rocks with high hardness, the flexible drilling between the diamond drill bit 1 and the drill bit increases drilling time, and the frictional resistance during drilling is large, generating more heat. Therefore, during drilling, the rotation of the driven wheel 13 will drive the pin 26 to rotate eccentrically. The pin 26 will then drive the drive rod 28 to slide back and forth through the connecting rod 27, thereby driving the sliding plug 22 to slide back and forth in a sealing manner. At this time, the coolant in the annular reservoir 23 will be drawn into the pump chamber 21 through the one-way inlet pipe 24. Then, the coolant in the pump chamber 21 will enter the cooling chamber 20 through the one-way outlet pipe 25. The heat on the diamond drill bit 1 will be transferred to the heat-conducting sleeve 19, and the coolant in the cooling chamber 20 will exchange heat with the heat-conducting sleeve 19, thereby cooling the diamond drill bit 1.

[0030] The inner wall of the cooling chamber 20 has multiple drain holes 38, and each drain hole 38 is equipped with a pressure relief valve.

[0031] Furthermore, as more coolant is injected, the pressure inside the cooling chamber 20 will increase until it exceeds the threshold of the pressure relief valve. The pressure relief valve will then open, and some coolant will be discharged through the drain hole 38, thereby dissipating heat. Alternatively, as the coolant absorbs more heat, the coolant temperature will rise, and the internal pressure of the coolant will increase. When it exceeds the threshold of the pressure relief valve, the pressure relief valve will open, and some coolant will also be discharged through the drain hole 38, thereby dissipating heat.

[0032] It is worth mentioning that the device only starts cooling when it encounters hard rock and the buffer function is activated. When drilling in soft rock and strong cooling is not required, cooling stops completely. This on-demand supply mode can significantly save energy consumption for driving the cooling pump compared to the traditional continuous circulation cooling system, and significantly reduce coolant consumption and thermal pollution, making it greener and more energy-efficient.

[0033] A connecting mechanism is installed on the connecting sleeve 2. The connecting mechanism includes multiple mounting slots 29 formed on the side wall of the connecting sleeve 2. A positioning plate 30 is slidably connected to the inner wall of each mounting slot 29.

[0034] The connecting mechanism also includes multiple sliding grooves 31 formed on the side wall of the connecting sleeve 2. Multiple sliders 32 are slidably connected to the inner wall of the multiple sliding grooves 31. The side walls of the multiple sliders 32 are fixedly connected to a sliding sleeve 33. Multiple push rods 34 are rotatably connected to the lower end of the sliding sleeve 33. The other end of the push rod 34 is rotatably connected to the side wall of the positioning plate 30. A sliding rod 37 is fixedly connected to the inner wall of the sliding groove 31. The side wall of the sliding rod 37 is slidably connected to the slider 32. A second spring 35 is sleeved on the side wall of the sliding rod 37. The two ends of the second spring 35 are fixedly connected to the upper end of the slider 32 and the top of the inner wall of the sliding groove 31, respectively.

[0035] The sliding sleeve 33 has multiple threaded rods 36 connected to its side wall, and the connecting sleeve 2 has multiple threaded grooves that mate with the threaded rods 36 on its side wall.

[0036] Furthermore, when connecting the diamond drill bit 1, firstly, push the sliding sleeve 33 upward by hand, causing the sliding sleeve 33 to slide upward. The sliding sleeve 33 will drive the positioning plate 30 to slide outward through the push rod 34, so that the positioning plate 30 moves out of the connecting sleeve 2 and completely enters the mounting groove 29. Then, insert the diamond drill bit 1 into the connecting sleeve 2, so that the drive plate 8 abuts against the friction plate 7. In the initial state, the multiple first springs 5 ​​are in a fully compressed state (e.g., Figure 3As shown in the diagram, when the drive plate 8 abuts against the friction plate 7, the drive plate 8 cannot push the friction plate 7 to move. Consequently, when the diamond drill bit 1 is inserted into the connecting sleeve 2 and cannot move further, the sliding sleeve 33 can be released. The sliding sleeve 33 will move downwards to reset under the action of the second spring 35. The sliding sleeve 33 will push the positioning plate 30 to move into the connecting sleeve 2 through the push rod 34. The positioning plate 30 can then abut against the upper end of the drive plate 8. At this time, the drive plate 8 cannot slide. Then, the threaded rod 36 is turned into the corresponding threaded groove to fix the position of the sliding sleeve 33. The diamond drill bit 1 can then be engaged in the connecting sleeve 2, completing the installation of the diamond drill bit 1. Compared with the existing installation method, the installation is simpler and more convenient, saving time and effort.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rock drilling device for mining, comprising a diamond drill bit (1) and a connecting sleeve (2), characterized in that, It also includes a buffer mechanism; The buffer mechanism includes an adjusting plate (3) slidably connected to the inner wall of the connecting sleeve (2), a circular ring plate (4) slidably connected to the inner wall of the connecting sleeve (2), a plurality of first springs (5) fixedly connected between the adjusting plate (3) and the circular ring plate (4), a hollow rotating shaft (6) rotatably connected to the upper end of the circular ring plate (4), a friction plate (7) fixedly connected to the upper end of the hollow rotating shaft (6), a drive plate (8) fixedly connected to the lower end of the diamond drill bit (1), a lead screw (9) rotatably connected to the bottom of the connecting sleeve (2), and the side wall of the lead screw (9) is connected to the adjusting plate (3). The plate (3) is threaded. A cavity (10) is provided inside the connecting sleeve (2). A rotating rod (11) is rotatably connected to the inner wall of the cavity (10). A driving wheel (12) is fixedly connected to the lower end of the rotating rod (11). The lower end of the screw (9) extends to the inner wall of the cavity (10) and is fixedly connected to the driven wheel (13). The driving wheel (12) is connected to the driven wheel (13) through a synchronous belt. A torsion spring (14) is fixedly sleeved on the side wall of the screw (9). The two ends of the torsion spring (14) are fixedly connected to the top of the cavity (10) and the upper end of the driven wheel (13) respectively. A drive mechanism is installed inside the connecting sleeve (2).

2. The mining rock drilling equipment according to claim 1, characterized in that, in: The bottom of the connecting sleeve (2) is symmetrically fixed with two limiting rods (15), and the side walls of the two limiting rods (15) are slidably connected to the adjusting plate (3) and the annular plate (4).

3. The mining rock drilling equipment according to claim 1, characterized in that, in: The drive mechanism includes an installation cavity (16) opened in the inner wall of the connecting sleeve (2), the upper end of the rotating rod (11) extends into the installation cavity (16) and is fixedly connected to a cylindrical gear (17), and a toothed ring (18) is fixedly connected to the side wall of the friction plate (7), and the toothed ring (18) meshes with the cylindrical gear (17).

4. The mining rock drilling equipment according to claim 1, characterized in that, in: A cooling mechanism is installed on the connecting sleeve (2). The cooling mechanism includes a cooling chamber (20) opened in the connecting sleeve (2). A heat-conducting sleeve (19) is fixedly connected to the side wall of the diamond drill bit (1). A pumping chamber (21) is opened in the connecting sleeve (2). A sliding plug (22) is slidably connected to the inner wall of the pumping chamber (21). An annular storage tank (23) is fixedly connected to the side wall of the connecting sleeve (2). The pumping chamber (21) is connected to the annular storage tank (23) through a one-way inlet pipe (24). The pumping chamber (21) is connected to the cooling chamber (20) through a one-way outlet pipe (25).

5. A rock drilling device for mining according to claim 4, characterized in that, in: The cooling mechanism also includes a pin (26) eccentrically fixedly connected to the lower end of the driven wheel (13), a connecting rod (27) rotatably connected to the side wall of the pin (26), and a drive rod (28) fixedly connected to the side wall of the slide (22). One end of the drive rod (28) extends into the cavity (10) and is rotatably connected to the connecting rod (27).

6. A rock drilling device for mining according to claim 4, characterized in that, in: The cooling chamber (20) has multiple drain holes (38) on its inner wall, and each drain hole (38) is equipped with a pressure relief valve.

7. A rock drilling device for mining according to claim 1, characterized in that, in: The connecting sleeve (2) is equipped with a connecting mechanism, which includes a plurality of mounting slots (29) opened on the side wall of the connecting sleeve (2), and a positioning plate (30) is slidably connected to the inner wall of each mounting slot (29).

8. A rock drilling device for mining according to claim 7, characterized in that, in: The connecting mechanism also includes multiple sliding grooves (31) formed on the side wall of the connecting sleeve (2). Multiple sliders (32) are slidably connected to the inner walls of the multiple sliding grooves (31). A sliding sleeve (33) is fixedly connected to the side walls of the multiple sliders (32). Multiple push rods (34) are rotatably connected to the lower end of the sliding sleeve (33). The other end of the push rod (34) is rotatably connected to the side wall of the positioning plate (30). A sliding rod (37) is fixedly connected to the inner wall of the sliding groove (31). The side wall of the sliding rod (37) is slidably connected to the slider (32). A second spring (35) is sleeved on the side wall of the sliding rod (37). The two ends of the second spring (35) are fixedly connected to the upper end of the slider (32) and the top of the inner wall of the sliding groove (31), respectively.

9. A rock drilling device for mining according to claim 8, characterized in that, in: The sliding sleeve (33) has multiple threaded rods (36) threadedly connected to its side wall, and the connecting sleeve (2) has multiple threaded grooves that mate with the threaded rods (36) on its side wall.

10. A rock drilling device for mining according to claim 4, characterized in that, in: Both the connecting sleeve (2) and the heat-conducting sleeve (19) are made of materials with high strength and good thermal conductivity.

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