Three-dimensional laser scanning imaging detection device for mine gas drilling

Abstract

The invention relates to the technical field of mine drilling, in particular to a three-dimensional laser scanning imaging detection device for mine gas drilling, which comprises a rotating shaft, a connecting shaft and a drill bit, the rotating shaft is positioned between the connecting shaft and the drill bit, and the connecting shaft and the drill bit are fixedly mounted at two ends of the rotating shaft respectively. And a water inlet channel and a water return channel are formed in each of the rotating shaft and the connecting shaft. The detection plate can detect and scan the condition in the mining hole in time through movement of a second sliding ring and cleaning of the detection plate, through shielding of a second blocking piece, the water pressure of a spray head is increased, the spray head is prevented from being blocked, meanwhile, chippings in the mining hole are wetted, the discharging efficiency is improved, the inner wall of the mining hole is punched through improvement of the water amount and the water pressure of the spray head, and the working efficiency is improved. Through rotation of the spray head, the punching range is widened, through the vertical spray head and improvement of the water pressure, the inner wall of the mining hole is slotted, the water pressure of the spray head is improved through shielding of the first blocking piece, and therefore the slotting range is widened.

Description

Technical Field

[0001] The present invention relates to the technical field of mine drilling, and particularly to a three-dimensional laser scanning imaging detection device for mine gas drilling. Background Art

[0002] Affected by factors such as ground stress, gas pressure, and coal body tectonic stress, soft coal drill holes have large deformation, are prone to local instability and collapse, the drill holes are deformed, the frictional resistance for drill cuttings to be discharged increases, the fluid pressure loss increases, and the drill cuttings are prone to accumulate and block in the drill holes. If not discovered and dredged in time, in-hole accidents such as drill sticking, drill breaking, and in-hole gas combustion will occur, thus forming the problem of enhancing the permeability of low-permeability coal bodies. In response to the problem of enhancing the permeability of low-permeability coal bodies, at present, the combination of hydraulic punching and hydraulic slotting has been experimentally applied in mines at home and abroad. However, due to the unchanged positions of the punching valve body and the slotting valve body during operation, problems such as easy blockage of the slag discharge channel, poor punching and slotting effects, etc. not only seriously affect the construction progress, but also limit the permeability enhancement effect and bring difficulties to the permeability enhancement evaluation. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the background art, and to propose a three-dimensional laser scanning imaging detection device for mine gas drilling.

[0004] To achieve the above purpose, the present invention adopts the following technical scheme: A three-dimensional laser scanning imaging detection device for mine gas drilling, including a rotating shaft, a connecting shaft, and a drill bit. The rotating shaft is located between the connecting shaft and the drill bit. The connecting shaft and the drill bit are respectively fixedly installed at both ends of the rotating shaft. Water inlet channels and water return channels are provided inside both the rotating shaft and the connecting shaft. The water inlet channels and the water return channels are interconnected. A spiral groove and three discharge grooves are provided on the side walls of both the rotating shaft and the connecting shaft. Three nozzles are movably installed on the side wall of the rotating shaft, and each nozzle is located inside one of the discharge grooves. An adjustment assembly is movably installed inside the rotating shaft. The adjustment assembly includes a rotating rod, a pull ring, and a first sliding ring. The rotating rod penetrates through the side wall of the rotating shaft and is rotatably installed inside the rotating shaft. A spiral impeller is integrally formed on the side wall of the rotating rod. The spiral impeller is rotatably installed inside the first sliding ring. The pull ring is slidably installed inside the water inlet channel. The pull ring is rotatably installed outside the rotating rod. The pull ring is located below the nozzle; A detection plate is fixedly installed on the side wall of the drill bit. A scraping assembly is movably installed inside the drill bit. The scraping assembly is used to clean and maintain the detection plate during the drilling process.

[0005] In the above-mentioned three-dimensional laser scanning imaging detection device for mine gas drilling, a first chute, a spiral chute, and a second chute are provided on the side wall of the water inlet channel. The spiral chute is located between the first chute and the second chute and is interconnected. A first sliding bead is integrally formed on the side wall of the first sliding ring, and the first sliding bead is slidably installed inside the first chute, the spiral chute, and the second chute.

[0006] In the above-mentioned three-dimensional laser scanning imaging detection device for mine gas drilling, the spiral direction of the spiral groove is the same as the rotation direction of the rotating shaft, and the spiral direction of the spiral chute is opposite to the rotation direction of the rotating shaft.

[0007] In the above-mentioned three-dimensional laser scanning imaging detection device for mine gas drilling, three spherical grooves are provided on the side wall of the rotating shaft. A spherical pipe wall is integrally formed on the side wall of the nozzle. Each spherical pipe wall is movably installed inside one of the spherical grooves. Three second retaining pieces are integrally formed on the side wall of the pull ring, and each second retaining piece is located below one of the spherical grooves.

[0008] In the above-mentioned three-dimensional laser scanning imaging detection device for mine gas drilling, a support rod is integrally formed on the side wall of the second retaining piece. A third chute is provided inside the support rod. A shifting rod is integrally formed on the inner wall of the nozzle. The shifting rod is movably installed inside the third chute. An arc retaining ring is slidably installed at the end of the support rod. A first spring is provided between the arc retaining ring and the support rod.

[0009] In the above-mentioned three-dimensional laser scanning imaging detection device for mine gas drilling, a first retaining piece is integrally formed on the side wall of the rotating rod. The pull ring is located between the first retaining piece and the spiral impeller. A first straight groove is provided on the side wall of the water inlet channel. A first sliding strip is integrally formed on the side wall of the pull ring. The first sliding strip is slidably installed inside the first straight groove. A second spring is provided between the side wall of the first sliding ring and the inner wall of the rotating shaft.

[0010] In the above-mentioned three-dimensional laser scanning imaging detection device for mine gas drilling, the scraping assembly includes a second sliding ring and a rotating cylinder. The rotating cylinder is rotatably installed inside the drill bit. The rotating rod passes through the side wall of the drill bit and is slidably installed inside the rotating cylinder. The second sliding ring is slidably installed on the side wall of the drill bit. A rotating hole is integrally formed on the side wall of the second sliding ring, and the rotating cylinder is rotatably installed inside the rotating hole.

[0011] In the above-mentioned three-dimensional laser scanning imaging detection device for mine gas drilling, the inner wall of the rotating cylinder is integrally formed with a sliding bar 2, the side wall of the rotating rod is provided with a straight groove 2, the sliding bar 2 is slidably installed inside the straight groove 2, the outer side of the rotating cylinder is provided with a bidirectional thread, the interior of the rotating hole is integrally formed with a sliding ball 2, the sliding ball 2 is slidably installed inside the bidirectional thread, the side wall of the slip ring 2 is integrally formed with a side plate 1 and a side plate 2, and the side plate 1 and the side plate 2 are both located above the detection plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The spiral impeller installed inside the rotating shaft rotates. After the water source inside the water inlet channel flows, the spiral impeller drives the drum to rotate, so that the slip ring 2 moves back and forth horizontally to clean the detection plate, so that the detection plate can detect and scan the situation inside the mining hole in time to avoid the problem inside the mining hole cannot be found in time. At the same time, the spiral impeller and the water source inside the water inlet channel drive the slip ring 1 to slide. When the pressure inside the water inlet channel is low, the baffle plate 2 blocks half of the spherical groove, so that the water pressure of the nozzle increases to avoid nozzle clogging. At this time, the water source sprayed by the nozzle moistens the debris inside the mining hole to improve the efficiency of discharge. When the pressure inside the water inlet channel is medium, the slip ring The second slip ring slowly moves toward the direction of the return water channel, so that the baffle plate 2 is away from the spherical groove, increasing the drainage volume of the nozzle. At the same time, the arc baffle ring contacts and moves the lever, causing the nozzle to rotate. By increasing the water volume and water pressure of the nozzle, the inner wall of the mining hole is punched, and the range of the punching is increased by the rotation of the nozzle. When the inside of the water inlet channel is under high pressure, the slip ring 2 continues to move toward the direction of the return water channel, the arc baffle ring shrinks, and the nozzle is vertically formed by the impact of the water flow. At the same time, the spiral impeller drives the baffle plate 1 to cover the spherical groove in turn, and the inner wall of the mining hole is cut by the vertical nozzle and the water pressure is increased. The water pressure of the nozzle is increased by the blocking of the baffle plate 1, thereby increasing the cutting range. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 The enlarged schematic diagram of point A in the middle; Figure 4 For the present invention Figure 3 The enlarged schematic diagram of point B in the middle; Figure 5 It is a partial structural cross-sectional view of the rotating shaft in the present invention; Figure 6 It is a top view of the working structure of the slip ring 2 in the present invention; Figure 7 It is a disassembly schematic diagram of the scraping component in the present invention; Figure 8 Structural sectional view of the rotating shaft in the present invention; Figure 9 Schematic diagram of the internal structure of the rotating shaft in the present invention; Figure 10 Schematic diagram of the structure of the adjusting component in the present invention; Figure 11 For the present invention Figure 10 Enlarged schematic diagram at position C in; Figure 12 Schematic diagram of the structures of the nozzle and the pull ring in the present invention.

[0014] In the figure: 1, rotating shaft; 11, connecting shaft; 12, drill bit; 13, detection plate; 141, spiral groove; 142, discharge groove; 143, water inlet channel; 144, return water channel; 145, first straight groove; 146, spherical groove; 151, first sliding groove; 152, spiral sliding groove; 153, second sliding groove; 21, rotating rod; 211, spiral impeller; 212, first retaining piece; 213, second straight groove; 22, pull ring; 221, second retaining piece; 222, support rod; 223, arc retaining ring; 224, third sliding groove; 225, first spring; 226, first sliding ring; 227, first sliding bead; 228, second spring; 229, first sliding strip; 31, second sliding ring; 311, rotating cylinder; 312, rotating hole; 313, second sliding strip; 314, double-thread; 315, second sliding bead; 316, first side plate; 317, second side plate; 32, nozzle; 321, spherical pipe wall; 322, dial rod. Detailed implementation manners

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0016] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0017] Refer to Figure 1 - Figure 12As shown in the figure, a three-dimensional laser scanning imaging detection device for mine gas drilling includes a rotating shaft 1, a connecting shaft 11 and a drill bit 12. The rotating shaft 1 is located between the connecting shaft 11 and the drill bit 12. The connecting shaft 11 and the drill bit 12 are respectively fixedly installed at both ends of the rotating shaft 1. Water inlet channels 143 and water return channels 144 are provided inside both the rotating shaft 1 and the connecting shaft 11. The water inlet channels 143 and the water return channels 144 are interconnected. A spiral groove 141 and three discharge grooves 142 are provided on the side walls of both the rotating shaft 1 and the connecting shaft 11. Three spray nozzles 32 are movably installed on the side wall of the rotating shaft 1. Each spray nozzle 32 is located inside one of the discharge grooves 142. An adjustment assembly is movably installed inside the rotating shaft 1. The adjustment assembly includes a rotating rod 21, a pull ring 22 and a first sliding ring 226. The rotating rod 21 penetrates through the side wall of the rotating shaft 1 and is rotatably installed inside the rotating shaft 1. A spiral impeller 211 is integrally formed on the side wall of the rotating rod 21. The spiral impeller 211 is rotatably installed inside the first sliding ring 226. The pull ring 22 is slidably installed inside the water inlet channel 143. The pull ring 22 is rotatably installed outside the rotating rod 21. The pull ring 22 is located below the spray nozzle 32; A detection plate 13 is fixedly installed on the side wall of the drill bit 12. A scraping assembly is movably installed inside the drill bit 12. The scraping assembly is used to clean and maintain the detection plate 13 during the drilling process.

[0018] Among them, the working principle of the water inlet channel 143 and the water return channel 144 is as follows: The side wall of the connecting shaft 11 is connected to a high-pressure water injection device, and the side peripheral wall of the connecting shaft 11 is connected to a drilling rig, so that the high-pressure water injection device injects water into the water inlet channel 143. The water source moves from the water inlet channel 143 to the water return channel 144, forming a water cycle, so that the water source inside the water inlet channel 143 is always in a flowing state.

[0019] As Figure 5 、 Figure 9 and Figure 10 shown, a first sliding groove 151, a spiral sliding groove 152 and a second sliding groove 153 are provided on the side wall of the water inlet channel 143. The spiral sliding groove 152 is located between the first sliding groove 151 and the second sliding groove 153 and is interconnected. A first sliding bead 227 is integrally formed on the side wall of the first sliding ring 226. The first sliding bead 227 is slidably installed inside the first sliding groove 151, the spiral sliding groove 152 and the second sliding groove 153. The rotation direction of the spiral groove 141 is the same as the rotation direction of the rotating shaft 1, and the rotation direction of the spiral sliding groove 152 is opposite to the rotation direction of the rotating shaft 1. A second spring 228 is provided between the side wall of the first sliding ring 226 and the inner wall of the rotating shaft 1.

[0020] Among them, the working principle of the first slip ring 226 is as follows: The water source flowing inside the water inlet channel 143 always drives the spiral impeller 211 to rotate. When the water source inside the water inlet channel 143 is at low pressure, the spiral impeller 211 rotates and drains water into the water return channel 144. The thrust of the water flow on the spiral impeller 211 is less than the thrust of the second spring 228 on the first slip ring 226, and the first sliding bead 227 is located inside the first chute 151. When the water source inside the water inlet channel 143 is at medium pressure, the thrust of the water flow on the spiral impeller 211 is greater than the thrust of the second spring 228 on the first slip ring 226. The water source pushes the spiral impeller 211, and the spiral impeller 211 drives the first slip ring 226 to move towards the water return channel 144. The first sliding bead 227 slides into the inside of the spiral chute 152, causing the first slip ring 226 to slide slowly. When the first sliding bead 227 is at the end of the spiral chute 152, the thrust of the water flow on the spiral impeller 211 and the thrust of the second spring 228 on the first slip ring 226 cancel each other out. When the water source inside the water inlet channel 143 is at high pressure, the thrust of the water flow on the spiral impeller 211 is greater than the thrust of the second spring 228 on the first slip ring 226 again. The spiral impeller 211 drives the first slip ring 226 to move towards the water return channel 144 again, and the first sliding bead 227 slides into the inside of the second chute 153. When the water source inside the water inlet channel 143 drops to low pressure again, the thrust of the water flow on the spiral impeller 211 is less than the thrust of the second spring 228 on the first slip ring 226, causing the second spring 228 to drive the spiral impeller 211 to return to its original position through the first slip ring 226.

[0021] For further reference Figure 9 The working principle of the spiral groove 141 and the spiral chute 152 is as follows: When the rotating shaft 1 and the connecting shaft 11 rotate, the spiral groove 141 rotates with the rotating shaft 1 and the connecting shaft 11, causing the debris inside the mining hole to move through the spiral groove 141 into the discharge chute 142 and be discharged from the mining hole. When the rotating shaft 1 rotates, the first slip ring 226 rotates with the rotating shaft 1. At this time, the rotational speeds of the first slip ring 226 and the rotating shaft 1 are equal. When the first sliding bead 227 on the side wall of the first slip ring 226 slides inside the spiral chute 152, the first sliding bead 227 abuts against the side wall of the spiral chute 152, and the rotational speed of the first slip ring 226 decreases. At this time, the rotational speed of the first slip ring 226 is less than that of the rotating shaft 1, causing the first slip ring 226 to move slowly towards the water return channel 144.

[0022] Such as Figure 3 、 Figure 4 、 Figure 8 、 Figure 11 and Figure 12As shown in the figure, three spherical grooves 146 are formed on the side wall of the rotating shaft 1. A spherical pipe wall 321 is integrally formed on the side wall of the nozzle 32. Each spherical pipe wall 321 is movably installed inside one of the spherical grooves 146. Three second retaining pieces 221 are integrally formed on the side wall of the pull ring 22. Each second retaining piece 221 is located below one of the spherical grooves 146. A support rod 222 is integrally formed on the side wall of the second retaining piece 221. A third sliding groove 224 is formed inside the support rod 222. A shifting rod 322 is integrally formed on the inner wall of the nozzle 32. The shifting rod 322 is movably installed inside the third sliding groove 224. An arc-shaped retaining ring 223 is slidably installed at the end of the support rod 222. A first spring 225 is provided between the arc-shaped retaining ring 223 and the support rod 222.

[0023] Among them, the working principle of the nozzle 32 is as follows: when the water source inside the water inlet channel 143 is at low pressure, the second retaining piece 221 blocks half of the spherical groove 146, increasing the water pressure of the nozzle 32 and preventing the nozzle 32 from being blocked. At this time, the water source sprayed by the nozzle 32 wets the debris inside the mining hole, improving the discharging efficiency. When the water source rises from low pressure to medium pressure, the spiral impeller 211 drives the first sliding ring 226 to move towards the water return channel 144. During the process of the spiral impeller 211 moving towards the water return channel 144, the rotating rod 21 drives the pull ring 22 to move. The second retaining piece 221 moves away from the spherical groove 146, increasing the water volume sprayed by the nozzle 32 and flushing the inner wall of the mining hole. The arc-shaped retaining ring 223 touches and shifts the shifting rod 322, causing the nozzle 32 to rotate slowly. By rotating the nozzle 32 to spray water, the flushing range is increased. When the water source rises from medium pressure to high pressure, the spiral impeller 211 drives the first sliding ring 226 to move towards the water return channel 144 again. The shifting rod 322 touches the arc-shaped retaining ring 223, and the arc-shaped retaining ring 223 contracts, causing the shifting rod 322 to move away from the inside of the third sliding groove 224. At this time, under the impact of the high-pressure water flow, the nozzle 32 is in a vertical state, enabling the nozzle 32 to cut a slot in the inner wall of the mining hole. When the water source returns to low pressure, the spiral impeller 211 returns to its original position, causing the arc-shaped retaining ring 223 to move towards the shifting rod 322 and touch it, causing the shifting rod 322 to drive the nozzle 32 to return to its original position. After the nozzle 32 returns to its original position, the arc-shaped retaining ring 223 contracts, causing the shifting rod 322 to slide into the inside of the third sliding groove 224 again.

[0024] As Figure 3 and Figure 10 shown in the figure, a first retaining piece 212 is integrally formed on the side wall of the rotating rod 21. The pull ring 22 is located between the first retaining piece 212 and the spiral impeller 211. A first straight groove 145 is formed on the side wall of the water inlet channel 143. A first sliding strip 229 is integrally formed on the side wall of the pull ring 22. The first sliding strip 229 is slidably installed inside the first straight groove 145.

[0025] Among them, the working principle of the first baffle 212 is as follows: when the water source is under high pressure, the first baffle 212 is located below the spherical groove 146. The spiral impeller 211 drives the first baffle 212 to rotate, so that the first baffle 212 sequentially blocks one of the spherical grooves 146. Through the blocking of the first baffle 212, the water pressure at the other two spherical grooves 146 is further increased, thereby increasing the cutting range of the nozzle 32 when cutting the inner wall of the mining hole.

[0026] As Figure 5 and Figure 7 shown, the scraping assembly includes a second slip ring 31 and a rotating cylinder 311. The rotating cylinder 311 is rotatably installed inside the drill bit 12. The rotating rod 21 penetrates through the side wall of the drill bit 12 and is slidably installed inside the rotating cylinder 311. The second slip ring 31 is slidably installed on the side wall of the drill bit 12. A rotating hole 312 is integrally formed on the side wall of the second slip ring 31. The rotating cylinder 311 is rotatably installed inside the rotating hole 312. A second slide bar 313 is integrally formed on the inner wall of the rotating cylinder 311. A second straight groove 213 is formed on the side wall of the rotating rod 21. The second slide bar 313 is slidably installed inside the second straight groove 213. A double-thread 314 is formed on the outside of the rotating cylinder 311. A second sliding bead 315 is integrally formed inside the rotating hole 312. The second sliding bead 315 is slidably installed inside the double-thread 314. Side plates 316 and 317 are integrally formed on the side wall of the second slip ring 31. Both the side plate 316 and the side plate 317 are located above the detection plate 13.

[0027] Among them, the working principle of the second slip ring 31 is as follows: when the rotating rod 21 rotates, the rotating rod 21 drives the rotating cylinder 311 to rotate. The rotating cylinder 311 drives the second slip ring 31 to move horizontally back and forth through the double-thread 314 and the second sliding bead 315, so that the second slip ring 31 scrapes off the debris covering above the detection plate 13. The side plate 316 is higher than the side plate 317. There is a gap between the side plate 316 and the side plate 317. When the side plate 316 and the side plate 317 are located above the detection plate 13, the detection plate 13 scans and images the mining hole through the gap between the side plate 316 and the side plate 317.

[0028] The specific working principle and use method of the present invention are explained in detail below: start the drilling rig and the high-pressure water injection device, the drilling rig drives the connecting shaft 11, the rotating shaft 1 and the drill bit 12 to rotate, the high-pressure water injection device injects water into the water inlet channel 143, the water source flowing in the water inlet channel 143 drives the spiral impeller 211 to rotate, the rotating rod 21 follows the spiral impeller 211 to rotate, the rotating rod 21 drives the rotating drum 311 to rotate, the rotating drum 311 drives the slip ring 2 31 to make a reciprocating lateral movement through the bidirectional thread 314 and the sliding ball 2 315, and during the movement of the slip ring 2 31, the sliding ball 2 315 drives the sliding ring 2 31 to move back and forth. The side wall of the second ring 31 scrapes off the debris covered on the top of the detection plate 13 and cleans the detection plate 13. When the side plate 1 316 and the second side plate 317 move to the top of the detection plate 13, the detection plate 13 detects the inner wall of the mining hole through the gap between the side plate 1 316 and the second side plate 317 and scans the image. When the water pressure inside the water inlet channel 143 is low pressure, the rotation speed of the slip ring 1 226 and the rotating shaft 1 is the same, the baffle 221 is located below the spherical groove 146, and the nozzle 32 sprays water to the outside of the rotating shaft 1, so that the debris inside the mining hole is moistened, thereby improving the efficiency of discharging. When the water pressure in the upper part is medium pressure, the slip ring 226 moves toward the return water channel 144. At this time, the rotation speed of the slip ring 226 is less than the rotation speed of the rotating shaft 1. The pull ring 22 moves with the slip ring 226, and the baffle 221 moves away from the spherical groove 146. The amount of water sprayed by the nozzle 32 increases and punches the inner wall of the mining hole. During the movement of the pull ring 22, the arc baffle ring 223 resists and moves the lever 322, so that the nozzle 32 rotates. The rotation of the nozzle 32 increases the punching range. When the water pressure inside the water inlet channel 143 is high pressure, the slip ring 226 moves toward the return water channel 144. The sliding ring 226 moves in the same direction as the rotating shaft 1. The pull ring 22 moves with the sliding ring 226. The arc retaining ring 223 shrinks. The nozzle 32 is vertically moved by the impact of the water flow, so that the nozzle 32 cuts the inner wall of the mining hole. At this time, the retaining plate 212 is located below the spherical groove 146. The retaining plate 212 is driven to rotate by the spiral impeller 211, and the spherical groove 146 is blocked in turn. The water pressure at the other two spherical grooves 146 is further increased by the blocking of the retaining plate 212, thereby increasing the cutting range of the nozzle 32 when cutting the inner wall of the mining hole.

[0029] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0030] As described above, it is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A three-dimensional laser scanning imaging detection device for mine gas drilling, comprising a rotating shaft (1), a connecting shaft (11) and a drill bit (12), characterized in that: The rotating shaft (1) is located between the connecting shaft (11) and the drill bit (12). The connecting shaft (11) and the drill bit (12) are respectively fixedly installed at both ends of the rotating shaft (1). Water inlet channels (143) and water return channels (144) are provided inside both the rotating shaft (1) and the connecting shaft (11). The water inlet channels (143) and the water return channels (144) are interconnected. A spiral groove (141) and three discharge grooves (142) are provided on the side walls of both the rotating shaft (1) and the connecting shaft (11). Three spray nozzles (32) are movably installed on the side wall of the rotating shaft (1). Each spray nozzle (32) is located inside one of the discharge grooves (142). An adjustment assembly is movably installed inside the rotating shaft (1). The adjustment assembly includes a rotating rod (21), a pull ring (22), and a first sliding ring (226). The rotating rod (21) penetrates the side wall of the rotating shaft (1) and is rotatably installed inside the rotating shaft (1). A spiral impeller (211) is integrally formed on the side wall of the rotating rod (21). The spiral impeller (211) is rotatably installed inside the first sliding ring (226). The pull ring (22) is slidably installed inside the water inlet channel (143). The pull ring (22) is rotatably installed outside the rotating rod (21). The pull ring (22) is located below the spray nozzle (32). A detection plate (13) is fixedly installed on the side wall of the drill bit (12). A scraping assembly is movably installed inside the drill bit (12). The scraping assembly is used to clean and maintain the detection plate (13) during drilling.

2. The three-dimensional laser scanning imaging detection device for mine gas drilling according to claim 1, characterized in that: A first chute (151), a spiral chute (152), and a second chute (153) are provided on the side wall of the water inlet channel (143). The spiral chute (152) is located between and interconnected with the first chute (151) and the second chute (153). A first sliding bead (227) is integrally formed on the side wall of the first sliding ring (226). The first sliding bead (227) is slidably installed inside the first chute (151), the spiral chute (152), and the second chute (153).

3. The three-dimensional laser scanning imaging detection device for mine gas drilling according to claim 2, characterized in that: The spiral direction of the spiral groove (141) is the same as the rotation direction of the rotating shaft (1). The spiral direction of the spiral chute (152) is opposite to the rotation direction of the rotating shaft (1).

4. The three-dimensional laser scanning imaging detection device for mine gas drilling according to claim 1, wherein: Three spherical grooves (146) are provided on the side wall of the rotating shaft (1). A spherical pipe wall (321) is integrally formed on the side wall of the spray nozzle (32). Each spherical pipe wall (321) is movably installed inside one of the spherical grooves (146). Three second retaining pieces (221) are integrally formed on the side wall of the pull ring (22). Each second retaining piece (221) is located below one of the spherical grooves (146).

5. The three-dimensional laser scanning imaging detection device for mine gas drilling according to claim 4, wherein: A support rod (222) is integrally formed on the side wall of the second baffle (221). A third chute (224) is formed inside the support rod (222). A shifting rod (322) is integrally formed on the inner wall of the nozzle (32). The shifting rod (322) is movably installed inside the third chute (224). An arc-shaped retaining ring (223) is slidably installed at the end of the support rod (222). A first spring (225) is arranged between the arc-shaped retaining ring (223) and the support rod (222).

6. The three-dimensional laser scanning imaging detection device for mine gas drilling according to claim 1, wherein: A first baffle (212) is integrally formed on the side wall of the rotating rod (21). The pull ring (22) is located between the first baffle (212) and the spiral impeller (211). A first straight groove (145) is formed on the side wall of the water inlet channel (143). A first sliding strip (229) is integrally formed on the side wall of the pull ring (22). The first sliding strip (229) is slidably installed inside the first straight groove (145). A second spring (228) is arranged between the side wall of the first sliding ring (226) and the inner wall of the rotating shaft (1).

7. The three-dimensional laser scanning imaging detection device for mine gas drilling according to claim 1, characterized in that: The scraping assembly includes a second sliding ring (31) and a rotating cylinder (311). The rotating cylinder (311) is rotatably installed inside the drill bit (12). The rotating rod (21) penetrates through the side wall of the drill bit (12) and is slidably installed inside the rotating cylinder (311). The second sliding ring (31) is slidably installed on the side wall of the drill bit (12). A rotating hole (312) is integrally formed on the side wall of the second sliding ring (31). The rotating cylinder (311) is rotatably installed inside the rotating hole (312).

8. The three-dimensional laser scanning imaging detection device for mine gas drilling according to claim 7, characterized in that: A second sliding strip (313) is integrally formed on the inner wall of the rotating cylinder (311). A second straight groove (213) is formed on the side wall of the rotating rod (21). The second sliding strip (313) is slidably installed inside the second straight groove (213). A double-thread (314) is formed on the outside of the rotating cylinder (311). A second sliding bead (315) is integrally formed inside the rotating hole (312). The second sliding bead (315) is slidably installed inside the double-thread (314). A first side plate (316) and a second side plate (317) are integrally formed on the side wall of the second sliding ring (31). Both the first side plate (316) and the second side plate (317) are located above the detection plate (13).

Images