Multifunctional drill rod connecting device of coal mine drilling machine

Abstract

The utility model belongs to the technical field of drill rods, and particularly relates to a multifunctional drill rod connecting device of a coal mine drilling machine, which comprises a fixing plate, a pair of connecting rods are fixedly connected to the middle of the side wall of the fixing plate and are symmetrically arranged on two sides of the fixing plate, and a water outlet component is arranged on the side wall of the bottom of the fixing plate. By arranging the fixing base, the rotating buckle plate, the fixed buckle plate, the spring and the groove hole, connection between the first drill rod and the second drill rod can be tighter and more stable, the rotating buckle plate and the fixed buckle plate are connected together in a mutual buckling mode, the situation that the first drill rod and the second drill rod fall off or loosen in the drilling operation process is reduced, and the drilling efficiency is improved. The coal mine drilling machine can be kept in a stable working state under various environmental conditions, due to the buckling effect between the rotating buckling plate and the fixed buckling plate, the anti-seismic performance of the coal mine drilling machine is enhanced, even under the action of external force, the drill bit can stably conduct drilling operation, and the drilling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill rods, in particular to a multifunctional drill rod connecting device for a coal mine drill. Background Art

[0002] Coal mine drilling rigs are mechanical equipment used for drilling operations during coal mining. They can drill holes of different depths and diameters, providing accurate geological data for coal mining and providing necessary operational support.

[0003] In the existing technology, drilling rigs and drill rods are closely related in coal mining operations and together constitute the basis of drilling operations. The drilling rig is the core equipment for wellhead drilling, and the drill rod is responsible for transmitting power, controlling the drill bit and sampling, and is an important component of the drilling rig.

[0004] During long-term use and observation, it was found that it is usually necessary to assemble and connect multiple sets of drill rods together for coal mine drilling operations, and the unstable connection between the drill rods can easily cause the drill bit to get stuck.

[0005] To this end, the utility model provides a multifunctional drill rod connecting device for a coal mine drill. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve at least one problem raised in the background art, a multifunctional drill rod connecting device for a coal mine drill is proposed.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: the utility model is a multifunctional drill rod connecting device for a coal mine drilling rig, comprising a fixing plate, a connecting rod is fixedly connected to the middle of the side wall of the fixing plate, the connecting rod is a pair and is symmetrically arranged on both sides of the fixing plate, the bottom side wall of the fixing plate is provided with a water outlet assembly, the top side wall of the fixing plate is equipped with a motor, the output end of the motor is fixedly connected to the first drill rod, the middle of the inner side wall of the first drill rod is provided with an internal thread, the inner side wall of the first drill rod is threadedly connected to the second drill rod, the middle of the side wall of the second drill rod is provided with an external thread, the external thread and the internal thread are correspondingly arranged, the middle of the side walls of the first drill rod and the second drill rod are both provided with a snap-fit ​​assembly, the middle of the side walls of the first drill rod and the second drill rod are both provided with a positioning assembly, the bottom side wall of the second drill rod is fixed with a drill bit, the bottom side wall of the second drill rod is fixed with a crushing assembly, the crushing assembly cover is arranged outside the drill bit, the snap-fit ​​assembly includes a plurality of fixing seats, the fixing seat is fixed to the end of the second drill rod, the The cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame.

[0008] Preferably, the positioning assembly includes a positioning protrusion, and the positioning protrusions are multiple and regularly arranged in a circular array on the inner wall of the first drill rod. A positioning ring is fixed to the middle of the side wall of the second drill rod, and the positioning rings are multiple and regularly arranged in a linear array on the side wall of the second drill rod. The positioning rings and the positioning protrusions are correspondingly arranged. This step can improve the accuracy of the first drill rod and the second drill rod during the insertion and fixation process by setting the positioning protrusions and the positioning rings, so that the second drill rod will not easily loosen or fall off from the first drill rod when subjected to external forces such as vibration and bumps, thereby enhancing the stability of the connection, and when disassembling, it only needs to be pulled out gently without the need for additional tools or complicated operating steps.

[0009] Preferably, the water outlet assembly includes a water tank, a liquid inlet pipe is fixedly connected to the top side wall of the water tank, and a liquid outlet is opened on the bottom side wall of the water tank, and the liquid outlet is multiple and regularly arranged in a circular array at the bottom of the water tank, and the water tank, the liquid inlet pipe and the liquid outlet are all hollow and connected. In this step, by setting the water tank, the liquid inlet pipe and the liquid outlet, when the first drill rod, the second drill rod and the drill bit are drilling a hole in the coal mine, the water injected into the water tank can flow along the side walls of the first drill rod, the second drill rod and the drill bit to the ground, thereby wetting the ground to be drilled, and the moist ground helps to reduce the temperature generated by the first drill rod, the second drill rod and the drill bit during the drilling process, thereby preventing the first drill rod, the second drill rod and the drill bit from overheating and damage. At the same time, for relatively hard ground, wetting can soften it and make it easier for the drill bit to penetrate, which can reduce the wear of the first drill rod, the second drill rod and the drill bit, and further improve the drilling efficiency.

[0010] Preferably, the crushing assembly includes a claw-shaped blade, and the claw-shaped blades are multiple and regularly arranged in a circular array at the bottom of the second drill rod. The multiple claw-shaped blade covers are arranged on the outside of the drill bit, and the bottom side walls of the claw-shaped blades are fixedly connected to multiple blades. By setting the claw-shaped blades and blades, this step can break the ground around the drill bit before the drill bit drills a hole in the coal mine ground, reducing the situation where the drill rig fails or is shut down for maintenance due to the hard ground that is difficult to break, thereby improving work efficiency and enabling the drilling work to be completed efficiently and quickly.

[0011] Preferably, the middle part of the side wall of the second drill rod and the first drill rod are equipped with a drill plate, and the drill plate is an auger structure. The drill plate set in this step can accelerate the deformation and loosening of the soil through the rotation and cutting action of the auger, thereby speeding up the drilling progress.

[0012] Preferably, a dustproof cloth is fixed to the middle of the inner wall of the slot hole, and the dustproof cloth is made of elastic material. By installing the dustproof cloth inside the slot hole, this step can effectively prevent external dust, dirt and other impurities from entering the fixed seat, reducing the situation where the rotating buckle plate and the fixed buckle plate become loose or cannot be fastened together due to dust accumulation.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model relates to a coal mine drilling machine multifunctional drill rod connecting device, through setting up fixed base, rotating buckle plate, fixed buckle plate, spring and slot hole, can make the connection between first drill rod and second drill rod more closely and firmly, rotating buckle plate and fixed buckle plate are connected together through the mode of mutual buckling, has reduced the situation that first drill rod and second drill rod fall off or loosen in the drilling operation process, can keep the stable working condition of coal mine drilling machine under various environmental conditions, and because of the buckling effect between rotating buckle plate and fixed buckle plate, this setting also enhanced the shock resistance of coal mine drilling machine, even under external force, drill bit can stably carry out drilling operation, improved the drilling efficiency.

[0015] 2. The utility model relates to a coal mine drilling machine multifunctional drill rod connecting device, through setting up fixed base, rotating buckle plate, fixed buckle plate, spring and slot hole, can make the connection between first drill rod and second drill rod more closely and firmly, rotating buckle plate and fixed buckle plate are connected together through the mode of mutual buckling, has reduced the situation that first drill rod and second drill rod fall off or loosen in the drilling operation process, can keep the stable working condition of coal mine drilling machine under various environmental conditions, and because of the buckling effect between rotating buckle plate and fixed buckle plate, this setting also enhanced the shock resistance of coal mine drilling machine, even under external force, drill bit can stably carry out drilling operation, improved the drilling efficiency. DRAWINGS

[0016] The utility model will be further explained in connection with the drawings.

[0017] Figure 1 It is the perspective view of the utility model;

[0018] Figure 2 It is the cooperation structure schematic view of internal thread and external thread in the utility model;

[0019] Figure 3 It is the cooperation structure schematic view of drill rod and claw-shaped cutter plate in the utility model;

[0020] Figure 4 It is the cooperation structure schematic view of positioning protrusion and positioning ring in the utility model;

[0021] Figure 5 It is Figure 3 the local enlarged view of A in the utility model.

[0022] Legend:

[0023] 1, fixed plate;11, connecting rod;12, motor;13, first drill rod;14, internal thread;15, second drill rod;16, external thread;17, drill bit;2, fixed base;21, rotating buckle plate;22, fixed buckle plate;23, spring;24, slot hole;3, positioning protrusion;31, positioning ring;4, water storage tank;41, liquid inlet pipe;42, liquid outlet;5, claw-shaped cutter plate;51, blade;6, drill plate. CONCRETE IMPLEMENTATION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Specific examples are given below.

[0026] like Figures 1 to 5 As shown, a multifunctional drill rod connection device for a coal mine drill rig according to an embodiment of the present invention includes a fixed plate 1, a connecting rod 11 is fixedly connected to the middle of the side wall of the fixed plate 1, the connecting rod 11 is a pair and symmetrically arranged on both sides of the fixed plate 1, a water outlet assembly is provided on the bottom side wall of the fixed plate 1, a motor 12 is assembled on the top side wall of the fixed plate 1, a first drill rod 13 is fixedly connected to the output end of the motor 12, an internal thread 14 is provided in the middle of the inner side wall of the first drill rod 13, a second drill rod 15 is threadedly connected to the inner side wall of the first drill rod 13, an external thread 16 is provided in the middle of the side wall of the second drill rod 15, and the external thread 16 and the internal thread 14 are correspondingly arranged, the first drill rod 13 and the second drill rod 15 are both provided with a buckle assembly in the middle of the side wall, the first drill rod 13 and the second drill rod 15 are both provided with a positioning assembly in the middle of the side wall, the second drill rod 15 is fixed with a drill bit 17 on the bottom side wall of the second drill rod 15, and a crushing assembly is fixed on the bottom side wall of the second drill rod 15. The crushing assembly cover is arranged outside the drill bit 17. When working, because the external thread 16 and the internal thread 14 are correspondingly arranged, the staff inserts the second drill rod 15 into the first drill rod 13 by screwing the external thread 16 into the internal thread 14. At this time, the second drill rod 15 The first drill rod 13 and the second drill rod 15 will form a whole. When the second drill rod 15 is inserted into the first drill rod 13, the positioning components on the side walls of the first drill rod 13 and the second drill rod 15 will restrict each other under the action of the applied force, so that the positioning components will restrict the second drill rod 15 inside the first drill rod 13. When the second drill rod 15 continues to be inserted into the first drill rod 13, the buckling components on the side walls of the first drill rod 13 and the second drill rod 15 will buckle together. At this time, the first drill rod 13 and the second drill rod 15 will be firmly fixed together. Then the staff will put a pair of connecting rods 11 and the coal mine together. The drilling rigs are connected together, and the coal mine drilling rig will lift the fixed plate 1, so that the first drill rod 13, the second drill rod 15 and the drill bit 17 are lifted synchronously. When the drill bit 17 is aligned with the area to be drilled, the staff starts the motor 12, and the motor 12 drives the first drill rod 13 to rotate. When the first drill rod 13 rotates, the second drill rod 15 and the drill bit 17 will rotate synchronously. At this time, the crushing component outside the drill bit 17 will break the outer ground first, so that the drill bit 17 can easily break the coal mine. At the same time, the water outlet component will spray water into the drilling area to moisten the ground, making it easier for the drill bit 17 to perform drilling operations.

[0027] like Figures 2 to 5As shown, the buckle assembly includes multiple fixing seats 2, which are fixed to the end of the second drill rod 15. The middle part of the inner wall of the fixing seat 2 is rotatably connected to a rotating buckle plate 21. The middle part of the inner wall of the first drill rod 13 is fixed with multiple fixing buckle plates 22. The fixing buckle plates 22 and the rotating buckle plates 21 are correspondingly arranged. The fixing buckle plates 22 and the rotating buckle plates 21 are buckled with each other. A spring 23 is fixed between the rotating buckle plates 21 and the fixing seat 2. Multiple slots 24 are opened on the side walls of the fixing seat 2 and the first drill rod 13. The slots 24 and the rotating buckle plates 21 are correspondingly arranged. When working, the staff will put the second drill rod 1 5 is screwed into the first drill rod 13. At this time, the multiple fixing seats 2 at the end of the second drill rod 15 will touch the inner wall of the first drill rod 13. When the second drill rod 15 continues to be screwed into the first drill rod 13, because the fixed buckle plate 22 and the rotating buckle plate 21 are correspondingly arranged, the rotating buckle plate 21 will contact the fixed buckle plate 22 and start to rotate inside the fixing seat 2 under the action of the rebound force of touching the fixed buckle plate 22. When the fixed buckle plate 22 no longer pushes up the rotating buckle plate 21, the rotating buckle plate 21 will be buckled together with the fixed buckle plate 22. At this time, the rotating buckle plate 21 and the fixed buckle plate 22 will not be easily The second drill rod 15 is disengaged, thereby fixing the second drill rod 15 inside the first drill rod 13 so that the second drill rod 15 will not fall off from the first drill rod 13 easily. When the first drill rod 13 and the second drill rod 15 need to be separated, the staff inserts the pin into the slot 24 and then rotates the pin. At this time, the pin will resist the rotating buckle plate 21 and push the rotating buckle plate 21 to disengage it from the fixed buckle plate 22. At the same time, the second drill rod 15 is pulled outward, so that the second drill rod 15 and the first drill rod 13 are separated. This step is achieved by setting the fixing seat 2, the rotating buckle plate 21, the fixed buckle plate 22, the spring 23 and the slot 24. The connection between the first drill rod 13 and the second drill rod 15 can be made tighter and more stable. The rotating buckle plate 21 and the fixed buckle plate 22 are connected together by mutual interlocking, which reduces the possibility of the first drill rod 13 and the second drill rod 15 falling off or loosening during the drilling operation, so that the coal mine drilling rig can maintain a stable working state under various environmental conditions. Due to the interlocking effect between the rotating buckle plate 21 and the fixed buckle plate 22, this setting also enhances the seismic performance of the coal mine drilling rig. Even under the action of external force, the drill bit 17 can stably perform drilling operations, thereby improving drilling efficiency.

[0028] like Figures 2 to 5As shown, the positioning assembly includes a positioning protrusion 3, which is multiple and arranged in a circular array on the inner wall of the first drill rod 13. A positioning ring 31 is fixed to the middle of the side wall of the second drill rod 15, which is multiple and arranged in a linear array on the side wall of the second drill rod 15. The positioning ring 31 and the positioning protrusion 3 are set correspondingly. During operation, the second drill rod 15 is screwed into the first drill rod 13. At this time, the multiple positioning rings 31 on the side wall of the second drill rod 15 will respectively contact the positioning protrusions 3 on the side wall of the first drill rod 13, and under the action of external force, the positioning protrusion 3 is positioned on the innermost positioning ring 31. This step can improve the accuracy of the first drill rod 13 and the second drill rod 15 during the insertion and fixation process by setting the positioning protrusion 3 and the positioning ring 31, so that the second drill rod 15 will not easily loosen or fall off from the first drill rod 13 when subjected to external forces such as vibration and bumps, thereby enhancing the stability of the connection, and when disassembling, it only needs to be pulled out gently, without the need for additional tools or complicated operating steps.

[0029] like Figure 1 As shown, the water outlet assembly includes a water tank 4, a liquid inlet pipe 41 is fixedly connected to the top side wall of the water tank 4, and a liquid outlet 42 is opened on the bottom side wall of the water tank 4. There are multiple liquid outlets 42 and they are regularly arranged in a circular array at the bottom of the water tank 4. The water tank 4, the liquid inlet pipe 41 and the liquid outlet 42 are all hollow and connected. During operation, the staff connects the liquid inlet pipe 41 to the water bucket. Because the water tank 4, the liquid inlet pipe 41 and the liquid outlet 42 are connected, the water flow will enter the water tank 4 through the liquid inlet pipe 41 and spray on the surface of the first drill rod 13, the second drill rod 15 and the drill bit 17 from the multiple liquid outlets 42. At this time, the water flow will slide along the surface of the first drill rod 13, the second drill rod 15 and the drill bit 17 until it falls on the ground and soaks them. This step By providing a water tank 4, a liquid inlet pipe 41 and a liquid outlet 42, when the first drill rod 13, the second drill rod 15 and the drill bit 17 are drilling a hole in a coal mine, the water injected into the water tank 4 can flow along the side walls of the first drill rod 13, the second drill rod 15 and the drill bit 17 to the ground, thereby wetting the ground to be drilled. The wet ground helps to reduce the temperature generated by the first drill rod 13, the second drill rod 15 and the drill bit 17 during the drilling process, thereby preventing the first drill rod 13, the second drill rod 15 and the drill bit 17 from overheating and being damaged. At the same time, for relatively hard ground, wetting can soften it and make it easier for the drill bit 17 to penetrate it, which can reduce the wear of the first drill rod 13, the second drill rod 15 and the drill bit 17, and further improve the drilling efficiency.

[0030] like Figure 1 and Figure 3As shown, the crushing assembly includes a claw-shaped cutter plate 5, which is multiple and regularly arranged in a circumferential array at the bottom of the second drill rod 15, the multiple claw-shaped cutter plates 5 are arranged outside the drill bit 17, and the bottom side wall of the claw-shaped cutter plate 5 is fixedly connected with multiple blades 51; in operation, when the second drill rod 15 rotates, the multiple claw-shaped cutter plates 5 fixedly connected at the bottom of the second drill rod 15 will rotate synchronously, so that the claw-shaped cutter plate 5 rotates with the blades 51; in the rotating process of the claw-shaped cutter plate 5 and the blades 51, the ground will be broken before the drill bit 17, which can break the ground around the drill bit 17 before the drill bit 17 drills a hole in the coal mine ground, reduces the situation that the drilling machine fails or stops for maintenance due to the hard ground, improves the work efficiency, and enables the drilling work to be completed efficiently and quickly.

[0031] As shown in Figure 1 As shown, the second drill rod 15 and the first drill rod 13 are both provided with a drill plate 6 at the middle of the side wall, and the drill plate 6 is provided in an auger structure; this step can accelerate the deformation and loosening of the soil through the rotation and cutting action of the auger, thereby speeding up the drilling progress.

[0032] As shown in Figures 1 to 5 As shown, the inside wall of the slot hole 24 is fixedly provided with a dustproof cloth in the middle, and the dustproof cloth is made of elastic material; this step can effectively block the impurities such as dust and dirt from entering the inside of the fixed seat 2, thereby reducing the situation that the rotating buckle plate 21 and the fixed buckle plate 22 are loose or not buckled due to dust accumulation.

[0033] Working principle: Because the external thread 16 and the internal thread 14 are arranged in correspondence, the staff inserts the second drill rod 15 into the first drill rod 13 by screwing the external thread 16 into the internal thread 14. At this time, the second drill rod 15 and the first drill rod 13 will form a whole. When the second drill rod 15 is inserted into the first drill rod 13, the positioning components on the side walls of the first drill rod 13 and the second drill rod 15 will restrict each other under the action of the applied force, so that the positioning components restrict the second drill rod 15 to the inside of the first drill rod 13. When the second drill rod 15 continues to be inserted into the first drill rod 13, the buckling components on the side walls of the first drill rod 13 and the second drill rod 15 will buckle together. At this time, the first drill rod 13 and the second drill rod 15 will be firmly fixed together, and then work The staff connects a pair of connecting rods 11 to the coal mine drilling rig. The coal mine drilling rig lifts the fixed plate 1, so that the first drill rod 13, the second drill rod 15 and the drill bit 17 are lifted synchronously. When the drill bit 17 is aligned with the area to be drilled, the staff starts the motor 12, and the motor 12 drives the first drill rod 13 to rotate. When the first drill rod 13 rotates, the second drill rod 15 and the drill bit 17 will rotate synchronously. At this time, the crushing component outside the drill bit 17 will break the outer ground first, so that the drill bit 17 can easily break the coal mine. At the same time, the water outlet component will spray water into the drilling area to wet the ground, which is convenient for the drill bit 17 to perform drilling operations. The staff screws the second drill rod 15 into the first drill rod 13. At this time, the multiple fixing seats 2 at the end of the second drill rod 15 will touch the first drill rod 1 3 inner wall, when the second drill rod 15 continues to be screwed into the first drill rod 13, because the fixed buckle plate 22 and the rotating buckle plate 21 are correspondingly arranged, the rotating buckle plate 21 will contact the fixed buckle plate 22 at this time, and under the action of the rebound force of touching the fixed buckle plate 22, it begins to rotate inside the fixing seat 2. When the fixed buckle plate 22 no longer pushes up the rotating buckle plate 21, the rotating buckle plate 21 will be buckled together with the fixed buckle plate 22. At this time, the rotating buckle plate 21 and the fixed buckle plate 22 will not be easily separated, thereby fixing the second drill rod 15 inside the first drill rod 13, so that the second drill rod 15 will not fall off from the first drill rod 13 easily. When it is necessary to separate the first drill rod 13 from the second drill rod 15, the staff will insert the pin into the slot 24 and then rotate the pin. When the second drill rod 15 is pulled out, the latch will resist the rotating buckle plate 21 and push the rotating buckle plate 21 to disengage it from the fixed buckle plate 22. At the same time, the second drill rod 15 is pulled out, so that the second drill rod 15 and the first drill rod 13 are separated, and the second drill rod 15 is screwed into the first drill rod 13. At this time, the multiple positioning rings 31 on the side wall of the second drill rod 15 will respectively contact the positioning protrusions 3 on the side wall of the first drill rod 13, and under the action of external force, the positioning protrusions 3 are positioned on the innermost positioning ring 31. The staff connects the liquid inlet pipe 41 to the water bucket. Because the water tank 4, the liquid inlet pipe 41 and the liquid outlet 42 are connected, the water will enter the water tank 4 through the liquid inlet pipe 41 and be sprayed from the multiple liquid outlets 42 on the surfaces of the first drill rod 13, the second drill rod 15 and the drill bit 17.At this time, the water flow will slide along the surface of the first drill rod 13, the second drill rod 15 and the drill bit 17 until falling on the ground, thereby wetting the ground, when the second drill rod 15 rotates, the plurality of claw-shaped cutter plates 5 fixed at the bottom of the second drill rod 15 will rotate synchronously, so that the claw-shaped cutter plates 5 rotate with the blades 51, in the rotating process of the claw-shaped cutter plates 5 and the blades 51, the ground will be broken first by the claw-shaped cutter plates 5 and the blades 51.

[0034] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A multifunctional drill rod connection device for a coal mine drill rig, comprising a fixing plate (1), characterized in that: A connecting rod (11) is fixedly connected to the middle of the side wall of the fixed plate (1), and the connecting rods (11) are a pair and symmetrically arranged on both sides of the fixed plate (1). A water outlet assembly is provided on the bottom side wall of the fixed plate (1), and a motor (12) is assembled on the top side wall of the fixed plate (1). The output end of the motor (12) is fixedly connected to a first drill rod (13), and an internal thread (14) is provided in the middle of the inner side wall of the first drill rod (13). The inner side wall of the first drill rod (13) is threadedly connected to a second drill rod (15). An external thread (16) is provided in the middle of the side wall of the second drill rod (15), and the external thread (16) and the internal thread (14) are arranged correspondingly. A buckle assembly is provided in the middle of the side wall of the first drill rod (13) and the second drill rod (15). A positioning assembly is provided in the middle of the side wall of the first drill rod (13) and the second drill rod (15). A drill bit (17) is fixed to the bottom side wall of the second drill rod (15). A crushing assembly is fixed to the bottom side wall of the second drill rod (15), and the crushing assembly cover is arranged outside the drill bit (17).

2. The multifunctional drill rod connection device for a coal mine drill according to claim 1, characterized in that: The buckle assembly comprises a plurality of fixing seats (2), the fixing seats (2) being fixed to the end of the second drill rod (15), a rotating buckle plate (21) being rotatably connected to the middle of the inner side wall of the fixing seat (2), a plurality of fixing buckle plates (22) being fixed to the middle of the inner side wall of the first drill rod (13), the fixing buckle plates (22) and the rotating buckle plates (21) being correspondingly arranged, the fixing buckle plates (22) and the rotating buckle plates (21) being buckled with each other, a spring (23) being fixed between the rotating buckle plates (21) and the fixing seat (2), a plurality of slots (24) being provided on the side walls of the fixing seat (2) and the first drill rod (13), the slots (24) and the rotating buckle plates (21) being correspondingly arranged.

3. The multifunctional drill rod connection device for a coal mine drill according to claim 1, characterized in that: The positioning assembly comprises a plurality of positioning protrusions (3), which are regularly arranged in a circular array on the inner side wall of the first drill rod (13); a positioning ring (31) is fixed to the middle of the side wall of the second drill rod (15); the positioning ring (31) is regularly arranged in a linear array on the side wall of the second drill rod (15); and the positioning ring (31) and the positioning protrusion (3) are arranged correspondingly.

4. The multifunctional drill rod connection device for a coal mine drill according to claim 1, characterized in that: The water outlet assembly comprises a water tank (4), a liquid inlet pipe (41) is fixedly connected to the top side wall of the water tank (4), and a liquid outlet (42) is opened on the bottom side wall of the water tank (4). The liquid outlets (42) are multiple and are regularly arranged in a circular array at the bottom of the water tank (4). The water tank (4), the liquid inlet pipe (41) and the liquid outlet (42) are all hollow and connected.

5. The multifunctional drill rod connection device for a coal mine drill according to claim 1, characterized in that: The crushing assembly comprises a claw-shaped blade (5), wherein the claw-shaped blade (5) is multiple and regularly arranged in a circular array at the bottom of the second drill rod (15), the multiple claw-shaped blades (5) are covered outside the drill bit (17), and the bottom side wall of the claw-shaped blade (5) is fixed with multiple blades (51).

6. The multifunctional drill rod connection device for a coal mine drill according to claim 5, characterized in that: The middle parts of the side walls of the second drill rod (15) and the first drill rod (13) are both equipped with a drill plate (6), and the drill plate (6) is arranged in an auger structure.

7. The multifunctional drill rod connection device for a coal mine drill according to claim 2, characterized in that: A dustproof cloth is fixed to the middle of the inner wall of the slot hole (24), and the dustproof cloth is made of elastic material.

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