Coal mine directional drilling machine

Abstract

The present application belongs to the technical field of drilling machine, especially to a coal mine directional drilling machine, which comprises a base and a supporting seat, the bottom of the supporting seat is fixedly connected with a mounting seat, the upper side of the base is fixedly connected with an inclined bracing plate, one side of the inclined bracing plate is fixedly connected with a first toothed plate, the inner side of the mounting seat is installed with a rebound mechanism, the outer part of the connecting plate is connected with a second toothed plate, the outer part of the mounting seat is installed with a separation mechanism; the upper side of the sliding block is connected with a top plate, the inner side of the clamping groove is installed with a resistance monitoring mechanism, the upper side of the clamping block is fixedly connected with a vertical plate, one side of the top plate is fixedly connected with a fixed rod, the end of the fixed rod is fixedly connected with a fixed disc, the outer part of the fixed disc is fixedly connected with a water spraying pipe, a water delivery mechanism is installed between the water tank and the fixed disc; the drilling machine drives the toothed plate inclined plane to extrude and engage with the spring automatic rebound, realizes rapid climbing and rigid locking, enhances the supporting stability, can sense the resistance and automatically spray water during drilling, effectively reduces dust and cools, protects the drill bit and improves the working environment.

Description

Technical Field

[0001] This invention relates to the field of drilling rig technology, and in particular to a coal mine directional drilling rig. Background Technology

[0002] In the coal mining industry, directional drilling rigs are core equipment for operations such as gas drainage, water exploration, and geological exploration. Their performance directly affects mine safety and production efficiency. Traditional coal mine drilling rigs mostly use hydraulic cylinders or screws to directly lift and adjust the drill bit height. This structure is insufficient in withstanding the huge reaction forces and continuous vibrations during drilling, resulting in poor support stability and making the adjustment mechanism prone to deformation or damage, affecting drilling accuracy. In addition, underground rock strata conditions are complex and variable. When the drill bit encounters hard rock, it not only becomes difficult to drill but also generates a large amount of dust and high temperatures due to intense friction, seriously polluting the working environment and shortening the drill bit's lifespan. Although existing equipment is generally equipped with dust removal devices, most of them lack automatic linkage with drilling resistance, relying on manual judgment for start and stop, resulting in delayed response, poor protection effect, and a need to improve the level of intelligence.

[0003] Based on the above background, the existing technology has two main problems. First, the support rigidity after the drilling rig height is adjusted is insufficient. The traditional jacking mechanism still needs to bear the main load after locking, and is prone to damage due to vibration fatigue. There is a lack of a stable support scheme that can quickly adjust the height and achieve rigid locking and effective unloading. Second, the drilling process lacks self-adaptive capability and cannot actively implement dust reduction and cooling in real time according to changes in rock resistance. Manual operation is subjective and delayed, which makes it difficult to ensure the visibility of the working environment and cannot protect the drill bit from high temperature damage in time, thus restricting the working efficiency and reliability of the drilling rig. Therefore, a coal mine directional drilling rig is proposed here. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a coal mine directional drilling rig, which more precisely solves the problems mentioned in the background section.

[0005] This invention is achieved through the following technical solution: This invention proposes a directional drilling rig for coal mines, comprising a base and a support base. A lower mounting pipe is fixedly connected to the upper side of the base, and an upper mounting pipe is fixedly connected to the bottom of the support base. A cylinder is fixedly connected between the lower and upper mounting pipes, and the cylinder is installed at an angle. A mounting seat is fixedly connected to the bottom of the support base. A diagonal brace is fixedly connected to the upper side of the base, and a first toothed plate is fixedly connected to one side of the diagonal brace. A spring-loaded mechanism is installed inside the mounting seat, and a connecting plate is connected to the outside of the spring-loaded mechanism. A second toothed plate is fixedly connected to the outside of the connecting plate, and the second toothed plate meshes with the first toothed plate. A separation mechanism is installed outside the mounting seat. A sliding groove is formed on the upper side of the support base, and a drive motor is fixedly connected to one side of the support base. A lead screw is fixedly connected to one side of the output shaft of the drive motor. The lead screw is rotatably connected to the inner side of the slide groove. A slider is threaded onto the outer side of the lead screw, and the slider is slidably connected to the inner side of the slide groove. A top plate is fixedly connected to the upper side of the slider. A slot is formed on the upper side of the top plate. A locking block is slidably connected to the inner side of the slot. A resistance monitoring mechanism is installed on the inner side of the slot. A vertical plate is fixedly connected to the upper side of the locking block. A stepper motor is fixedly connected to one side of the vertical plate. A drill rod is fixedly connected to one side of the stepper motor. A drill bit is fixedly connected to the end of the drill rod. A fixing rod is fixedly connected to one side of the top plate. A fixing disc is fixedly connected to the end of the fixing rod, and the fixing disc is sleeved on the outer side of the drill rod. A water spray pipe is fixedly connected to the outside of the fixing disc. A water tank is fixedly connected to the upper side of the base. A water delivery mechanism is installed between the water tank and the fixing disc.

[0006] Preferably, one side of the cylinder is electrically connected to an independent power source.

[0007] Preferably, the number of mounting bases and diagonal braces is two sets arranged laterally, and the mounting bases and diagonal braces are parallel to the cylinder.

[0008] Preferably, the rebound mechanism includes a compression spring and a telescopic rod, one end of which is fixedly connected to the inner side of the mounting base, and the connecting plate is fixedly connected to the other end of which.

[0009] Preferably, the serrations of the first toothed plate and the second toothed plate are both right-angled triangular shapes, and the separation direction of the inclined support plate from the mounting base is the direction in which the right-angled sides of the serrations of the first toothed plate and the second toothed plate abut.

[0010] Preferably, the separation mechanism includes a steel cable, a stop plate, and a connecting rod. The steel cable is fixedly connected to one side of the connecting plate, and the end of the steel cable passes through the outside of the mounting base and is fixedly connected to the stop plate. The stop plate abuts against the outside of the mounting base, and the connecting rod is fixedly connected between the two sets of stop plates.

[0011] Preferably, the resistance monitoring mechanism includes an elastic block, a cavity, and a pressure sensor. The elastic block is fixedly connected to the inner side of the slot and abuts against one side of the card block. The cavity is opened inside the elastic block, and the pressure sensor is fixedly connected inside the cavity.

[0012] Preferably, the inner side of the fixed plate has an annular cavity, the water spray pipe is connected to the annular cavity, and the number of water spray pipes is several groups arranged in a ring.

[0013] Preferably, the water delivery mechanism includes a water pump, a delivery pipe, and a long flexible hose. The water pump is fixedly connected to the inside of the water tank, the delivery pipe is fixedly connected to the outside of the water pump and protrudes from the upper side of the water tank, and the long flexible hose is fixedly connected between the delivery pipe and the fixed plate.

[0014] Preferably, a PLC processor is fixedly connected to the upper side of the base, and the PLC processor is connected to the cylinder, drive motor, pressure sensor, stepper motor and water pump for communication.

[0015] Compared with the prior art, the present invention provides a coal mine directional drilling rig, which has the following beneficial effects: 1. This coal mine directional drilling rig greatly improves the stability and safety during operation. Through toothed meshing and elastic rebound design, it achieves rapid height adjustment and rigid locking. After jacking is completed, the right-angled edges of the toothed plates abut against each other perpendicularly, which can directly transmit the huge impact force and vibration generated by drilling to the base, forming a stable support frame. This provides effective unloading protection for the main jacking components. This not only significantly reduces the risk of damage to key components due to continuous pressure and vibration and extends their service life, but also ensures the accuracy and stability of the drilling posture, providing a solid foundation for high-quality and high-efficiency drilling construction.

[0016] 2. This coal mine directional drilling rig possesses intelligent sensing and active protection capabilities, significantly improving the working environment and protecting key components. It can sense changes in resistance encountered by the drill bit underground in real time. Once excessive resistance is detected, it can automatically trigger a dust suppression and cooling program, promptly spraying water mist at the contact point between the drill bit and the rock wall. This instantaneous response based on actual working conditions can effectively suppress dust dispersion, maintain underground air visibility, and protect the health of operators without manual intervention. At the same time, it can quickly cool down the high-speed friction of the drill bit, preventing it from softening or wearing due to overheating. Thus, in the complex and harsh underground environment of coal mines, it simultaneously ensures construction efficiency, personnel safety, and equipment protection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial front sectional view of the present invention; Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 for Figure 1 Enlarged view of the structure at point B; Figure 5 for Figure 2 Enlarged view of the structure at point C; Figure 6 for Figure 1 Enlarged view of the structure at point D; Figure 7 for Figure 2 Enlarged view of the structure at point E in the middle; Figure 8 This is a partial side sectional view of the present invention; Figure 9 for Figure 8 Enlarged view of the structure at point F.

[0018] In the diagram: 1. Base; 2. Support seat; 3. Lower mounting pipe; 4. Upper mounting pipe; 5. Cylinder; 6. Mounting seat; 7. Diagonal brace; 8. First toothed plate; 9. Compression spring; 10. Telescopic rod; 11. Connecting plate; 12. Second toothed plate; 13. Steel cable; 14. Support plate; 15. Connecting rod; 16. Slide groove; 17. Slider; 18. Drive motor; 19. Lead screw; 20. Top plate; 21. Slot; 22. Elastic block; 23. Cavity; 24. Pressure sensor; 25. Locking block; 26. Vertical plate; 27. Stepper motor; 28. Drill rod; 29. ​​Drill bit; 30. Fixing rod; 31. Fixing plate; 32. Annular cavity; 33. Water spray pipe; 34. Water tank; 35. Water pump; 36. Delivery pipe; 37. Long hose; 38. PLC processor. Detailed Implementation

[0019] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0020] Example 1 like Figures 1-4 As shown in the figure, an embodiment of the present invention proposes a coal mine directional drilling rig, including a base 1 and a support base 2. The base 1 serves as the basic bearing platform of the entire drilling rig. A lower mounting pipe 3 is fixedly connected to the upper side of the base 1. The support base 2 serves as the core support component of the upper structure of the drilling rig. An upper mounting pipe 4 is fixedly connected to the bottom of the support base 2. The lower mounting pipe 3 and the upper mounting pipe 4 serve as the mounting base for the cylinder. A cylinder 5 is fixedly connected between the lower mounting pipe 3 and the upper mounting pipe 4. The cylinder 5 is installed at an angle to provide a stable lifting force for the drilling rig. An independent power supply is electrically connected to one side of the cylinder 5 to ensure the reliability of the power supply for the drilling rig under complex working conditions.

[0021] like Figure 2 As shown, the bottom of the support base 2 is fixedly connected to the mounting base 6, and the upper side of the base 1 is fixedly connected to the diagonal brace 7. The mounting base 6 and the diagonal brace 7 are key components of the height locking mechanism. There are two sets of mounting bases 6 and diagonal braces 7 arranged laterally to form a symmetrical support structure. The mounting base 6 and the diagonal brace 7 are parallel to the cylinder 5 to ensure the rationality of force transmission.

[0022] like Figure 2 as well as Figure 3 As shown, a first toothed plate 8 is fixedly connected to one side of the diagonal brace 7, a spring-loaded mechanism is installed on the inner side of the mounting base 6, and a connecting plate 11 is connected to the outside of the spring-loaded mechanism. The spring-loaded mechanism includes a compression spring 9 and a telescopic rod 10. The compression spring 9 and the telescopic rod 10 are key components for providing elastic reset. One end of the compression spring 9 and the telescopic rod 10 is fixedly connected to the inner side of the mounting base 6, and the connecting plate 11 is fixedly connected to the other end of the compression spring 9 and the telescopic rod 10 to realize the transmission of force.

[0023] like Figure 2 as well as Figure 3 As shown, the connecting plate 11 is externally fixedly connected to the second toothed plate 12, and the second toothed plate 12 and the first toothed plate 8 mesh to form a reliable mechanical interlock. The serrations of the first toothed plate 8 and the second toothed plate 12 are both right-angled triangular shapes to ensure one-way locking function, and the separation direction of the inclined brace plate 7 and the mounting base 6 is the direction of the right-angled sides of the serrations of the first toothed plate 8 and the second toothed plate 12 to achieve self-locking protection.

[0024] like Figure 3 as well as Figure 4 As shown, a separation mechanism is installed on the outside of the mounting base 6. The separation mechanism includes a steel cable 13, a stop plate 14, and a connecting rod 15. The steel cable 13 serves as a force transmission medium and is fixedly connected to one side of the connecting plate 11. The end of the steel cable 13 passes through the outside of the mounting base 6 and is fixedly connected to the stop plate 14 to achieve remote operation. The stop plate 14 abuts against the outside of the mounting base 6 to provide an operating fulcrum. The connecting rod 15 is fixedly connected between the two sets of stop plates 14 to achieve synchronous control.

[0025] In this embodiment, firstly, when the drilling rig needs height adjustment, the operator issues a command through the PLC processor 38, which then controls the cylinder 5 to start. The output shaft of the cylinder 5 begins to lift. This lifting force is transmitted to the support 2 and the base 1 through the upper mounting pipe 4 and lower mounting pipe 3 at both ends, respectively, driving the support 2 to move obliquely upward. When the support 2 rises, it will drive the mounting base 6 at its bottom to move together. At this time, the spring mechanism installed inside the mounting base 6 begins its key operation. The first toothed plate 8 fixed on the inclined support plate 7 and the second toothed plate 12 connected to the connecting plate 11 inside the mounting base 6 move relative to each other. Due to the sawtooth design of the two... Designed as a right-angled triangle, in the initial stage of the upward movement, the inclined surface of the first toothed plate 8 will generate a squeezing force on the inclined surface of the second toothed plate 12. This force forces the entire connecting plate 11 to overcome the elastic force of the compression spring 9, causing the second toothed plate 12 to briefly retract inward. When the support seat 2 continues to rise to the next tooth position under the drive of the cylinder 5, the squeezing force between the teeth disappears, and the compressed compression spring 9 instantly releases its elastic force, pushing the connecting plate 11 and the second toothed plate 12 outward, so that they can re-engage tightly with the first toothed plate 8 in the new tooth position. This process of "squeezing-retraction-springback-engagement" is repeated during the lifting process, realizing rapid and step-by-step positioning in dynamic climbing.

[0026] After cylinder 5 lifts support base 2 to the target height and stops outputting, the stability of the entire mechanism becomes crucial. At this point, the first toothed plate 8 and the second toothed plate 12 abut against each other perpendicularly due to the right-angled edge design of their serrated teeth. This structure effectively resists the enormous reverse force and vibration from the drill bit 29 during operation, transferring most of the force to the base 1 through the toothed plates and the inclined support plate 7, forming an extremely stable rigid support frame. This not only greatly reduces the static load and vibration impact on the output shaft of cylinder 5, but also effectively prevents cylinder 5 from being damaged due to long-term support. This significantly enhances the overall rigidity and stability of the drilling rig during the drilling process, laying a solid foundation for efficient and precise drilling operations. When it is necessary to lower the height, the operation is very simple. Just pull the connecting rod 15 connecting the two abutment plates 14 outwards. The abutment plate 14 will then pull the connecting plate 11 inside the mounting base 6 through the steel cable 13, so that the second toothed plate 12 overcomes the elastic force of the compression spring 9 and completely disengages from the first toothed plate 8. After that, under the control of the PLC processor 38, the cylinder 5 slowly retracts the output shaft, and the support base 2 can smoothly descend and reset, realizing rapid storage.

[0027] Example 2 like Figures 1-9As shown, based on Embodiment 1, a slide groove 16 is provided on the upper side of the support base 2. A drive motor 18 is fixedly connected to one side of the support base 2. A lead screw 19 is fixedly connected to one side of the output shaft of the drive motor 18. The lead screw 19 is rotatably connected to the inner side of the slide groove 16 to form a precision transmission system. A slider 17 is threadedly connected to the outer side of the lead screw 19. The slider 17 is slidably connected to the inner side of the slide groove 16 to achieve precise guidance. A top plate 20 is fixedly connected to the upper side of the slider 17. A slot 21 is provided on the upper side of the top plate 20. A locking block 25 is slidably connected to the inner side of the slot 21 to form an adjustable connection.

[0028] like Figure 2 as well as Figure 5 As shown, a resistance monitoring mechanism is installed on the inner side of the slot 21. The resistance monitoring mechanism includes an elastic block 22, a cavity 23, and a pressure sensor 24. The elastic block 22 serves as a sensitive element for force sensing. The elastic block 22 is fixedly connected to the inner side of the slot 21 and abuts against one side of the card block 25 to sense changes in force in real time. The cavity 23 is opened inside the elastic block 22 to provide deformation space. The pressure sensor 24 is fixedly connected inside the cavity 23 to realize accurate acquisition of pressure signals.

[0029] like Figure 6 as well as Figure 7 As shown, a vertical plate 26 is fixedly connected to the upper side of the clamping block 25, a stepper motor 27 is fixedly connected to one side of the vertical plate 26, a drill rod 28 is fixedly connected to one side of the stepper motor 27, and a drill bit 29 is fixedly connected to the end of the drill rod 28, forming a complete drilling execution system. A fixing rod 30 is fixedly connected to one side of the top plate 20, and a fixing plate 31 is fixedly connected to the end of the fixing rod 30. The fixing plate 31 is sleeved on the outside of the drill rod 28 to provide stable support. A gap is left between the fixing plate 31 and the outer peripheral wall of the drill rod 28. A water spray pipe 33 is fixedly connected to the outside of the fixing plate 31. An annular cavity 32 is opened on the inner side of the fixing plate 31. The water spray pipe 33 and the annular cavity 32 are connected to form a fluid distribution channel. The number of water spray pipes 33 is several groups and arranged in a ring to ensure full coverage spraying. In practice, the fixing plate 31 can also be rotatably mounted on the drill rod 28 through bearings to form a more stable support for the fixing plate 31.

[0030] like Figure 8 as well as Figure 9 As shown, a water tank 34 is fixedly connected to the upper side of the base 1. A water delivery mechanism is installed between the water tank 34 and the fixed plate 31. The water delivery mechanism includes a water pump 35, a delivery pipe 36, and a long hose 37. The water pump 35 serves as the power source for fluid delivery. The water pump 35 is fixedly connected to the inner side of the water tank 34. The delivery pipe 36 is fixedly connected to the outside of the water pump 35 and protrudes from the upper side of the water tank 34 to achieve fluid discharge. The long hose 37 is fixedly connected between the delivery pipe 36 and the fixed plate 31 to provide a flexible connection.

[0031] like Figure 1 As shown, a PLC processor 38 is fixedly connected to the upper side of the base 1, and the PLC processor 38 is connected to the cylinder 5, drive motor 18, pressure sensor 24, stepper motor 27 and water pump 35 through communication to realize the intelligent control of the whole machine.

[0032] In this embodiment, the automation characteristics of the drilling rig are fully demonstrated during the drilling operation. The PLC processor 38 controls the drive motor 18 to rotate, which drives the lead screw 19 to rotate and drives the slider 17 to move smoothly along the slide groove 16, thereby adjusting the horizontal feed position of the drill bit on the top plate 20. When the drill bit 29 contacts the rock wall, the stepper motor 27 starts, driving the drill rod 28 and the drill bit 29 to rotate at high speed and start drilling. At this time, the resistance monitoring mechanism integrated in the slot 21 of the top plate 20 continues to work. If the rock layer encountered by the drill bit 29 is abnormally hard, the drilling resistance will increase sharply. This resistance will be transmitted to the chuck block 25 through the drill rod 28 and the vertical plate 26. The chuck block 25 then slides in the slot 21 and applies greater pressure to the elastic block 22. The cavity 23 inside the elastic block 22 is deformed by pressure. The pressure sensor 24 embedded inside it monitors this pressure change in real time and transmits the signal to the PLC processor 38. The processor judges that the drill bit 29 is in a high-load, high-resistance working state.

[0033] This condition not only reduces drilling efficiency but also generates a large amount of dust and high temperature due to the intense friction between the drill bit 29 and the rock. The dust will seriously affect the operator's vision and working environment, while the high temperature may cause the material of the drill bit 29 to anneal and decrease in hardness, resulting in premature damage. To avoid these situations, the PLC processor 38 will immediately activate the response strategy and automatically run the water pump 35. The water pump 35 pumps the coolant or water in the water tank 34 into the annular cavity 32 of the fixed plate 31 through the delivery pipe 36 and the long hose 37. After the coolant is evenly distributed in the annular cavity 32, it is finally sprayed precisely at a certain pressure to the contact point between the drill bit 29 and the rock wall through several ring-shaped water spray pipes 33. The high-pressure liquid flow can first effectively capture and settle the dust generated by drilling, significantly improve the visibility at the work site, and protect the health of the construction personnel. At the same time, the coolant can quickly remove the large amount of heat generated by the friction of the drill bit 29, forcibly cooling it and ensuring that the drill bit 29 always works within a safe temperature range, thereby greatly extending the service life of the drill bit 29. This automatic spraying system based on real-time resistance monitoring perfectly embodies the intelligent design concept of the equipment, which integrates efficient drilling, environmental friendliness, and equipment protection.

[0034] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification, and therefore remain within the spirit and scope of the exemplary embodiments of this specification. Furthermore, this specification uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined. Moreover, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods of this specification.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coal mine directional drilling rig, comprising a base (1) and a support base (2), characterized in that, A lower mounting tube (3) is fixedly connected to the upper side of the base (1), and an upper mounting tube (4) is fixedly connected to the bottom of the support base (2). A cylinder (5) is fixedly connected between the lower mounting tube (3) and the upper mounting tube (4), and the cylinder (5) is installed at an angle. A mounting seat (6) is fixedly connected to the bottom of the support base (2). A diagonal brace (7) is fixedly connected to the upper side of the base (1), and a first toothed plate (8) is fixedly connected to one side of the diagonal brace (7). A spring is installed on the inner side of the mounting seat (6). The mechanism includes a connecting plate (11) externally connected to the springback mechanism, a second toothed plate (12) fixedly connected to the outside of the connecting plate (11), and the second toothed plate (12) meshing with the first toothed plate (8). A separation mechanism is installed on the outside of the mounting base (6). A sliding groove (16) is provided on the upper side of the support base (2). A drive motor (18) is fixedly connected to one side of the support base (2). A lead screw (19) is fixedly connected to one side of the output shaft of the drive motor (18). The screw rod (19) is rotatably connected to the inner side of the slide groove (16). The external thread of the screw rod (19) is connected to the slider (17), and the slider (17) is slidably connected to the inner side of the slide groove (16). The upper side of the slider (17) is fixedly connected to the top plate (20). The upper side of the top plate (20) is provided with a slot (21). The inner side of the slot (21) is slidably connected to the block (25). The inner side of the slot (21) is equipped with a resistance monitoring mechanism. The upper side of the block (25) is fixedly connected to the vertical plate (2). 6) A stepper motor (27) is fixedly connected to one side of the upright plate (26), a drill rod (28) is fixedly connected to one side of the stepper motor (27), a drill bit (29) is fixedly connected to the end of the drill rod (28), a fixing rod (30) is fixedly connected to one side of the top plate (20), a fixing plate (31) is fixedly connected to the end of the fixing rod (30), and the fixing plate (31) is sleeved on the outside of the drill rod (28), and a water spray pipe (33) is fixedly connected to the outside of the fixing plate (31). The rebound mechanism includes a compression spring (9) and a telescopic rod (10). One end of the compression spring (9) and the telescopic rod (10) is fixedly connected to the inner side of the mounting base (6), and the connecting plate (11) is fixedly connected to the other end of the compression spring (9) and the telescopic rod (10). The resistance monitoring mechanism includes an elastic block (22), a cavity (23), and a pressure sensor (24). The elastic block (22) is fixedly connected to the inside of the slot (21) and abuts against one side of the block (25). The cavity (23) is opened inside the elastic block (22), and the pressure sensor (24) is fixedly connected inside the cavity (23).

2. The directional drilling rig for coal mines according to claim 1, characterized in that, One side of the cylinder (5) is electrically connected to an independent power source, and a water tank (34) is fixedly connected to the upper side of the base (1). A water delivery mechanism is installed between the water tank (34) and the fixed plate (31).

3. A coal mine directional drilling rig according to claim 1, characterized in that, The number of mounting bases (6) and bracing plates (7) is two sets arranged horizontally, and the mounting bases (6) and bracing plates (7) are parallel to the cylinder (5).

4. A coal mine directional drilling rig according to claim 1, characterized in that, The serrations of the first toothed plate (8) and the second toothed plate (12) are both right-angled triangular shapes, and the separation direction of the inclined support plate (7) and the mounting base (6) is the direction in which the right-angled sides of the serrations of the first toothed plate (8) and the second toothed plate (12) abut.

5. A coal mine directional drilling rig according to claim 1, characterized in that, The inner side of the fixed plate (31) is provided with an annular cavity (32), and the water spray pipe (33) is connected to the annular cavity (32). The number of water spray pipes (33) is several groups arranged in a ring.

6. A coal mine directional drilling rig according to claim 1, characterized in that, The water delivery mechanism includes a water pump (35), a delivery pipe (36), and a long hose (37). The water pump (35) is fixedly connected to the inside of the water tank (34). The delivery pipe (36) is fixedly connected to the outside of the water pump (35) and protrudes from the upper side of the water tank (34). The long hose (37) is fixedly connected between the delivery pipe (36) and the fixed plate (31).

7. A coal mine directional drilling rig according to claim 6, characterized in that, A PLC processor (38) is fixedly connected to the upper side of the base (1), and the PLC processor (38) is connected to the cylinder (5), drive motor (18), pressure sensor (24), stepper motor (27) and water pump (35) for communication.

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