A drilling device with waste gas collecting function for coal mine exploration

Abstract

The application discloses a drilling device with waste gas collecting function for coal mine exploration and relates to the technical field of coal mine drilling. The drilling device comprises a sliding frame, the sliding frame is rotationally connected with a rotating sleeve, the lower portion of the rotating sleeve is slidably connected with a first spline rod, the lower end of the first spline rod is fixedly connected with a drill cylinder, the lower portion of the first spline rod is fixedly connected with a first fixed plate, the first spline rod is provided with an elastic member, the two ends of the elastic member are fixedly connected with the rotating sleeve and the first fixed plate respectively, the sliding frame is fixedly connected with a support frame, the support frame is fixedly connected with a first driving motor, and the output shaft of the first driving motor is fixedly connected with a gear. The first elastic member is used for monitoring the extrusion force between the drill cylinder and the bottom layer, so that the transmission ratio between the third extrusion plate and the fourth extrusion plate and the second extrusion plate and the first extrusion plate is changed, the moving speed of the sliding frame is reduced, the drill cylinder is prevented from moving downwards at a speed that is too fast, the extrusion force between the drill cylinder and the bottom layer is prevented from increasing continuously, and the drill cylinder is prevented from being stuck in the bottom layer.

Description

Technical Field

[0001] This invention relates to the field of coal mine drilling technology, and in particular to a drilling device for coal mine exploration with waste gas collection function. Background Technology

[0002] Geological exploration is an indispensable and important part of the coal mining process. During the mining process, coal samples need to be taken and analyzed to determine the mining direction. This can improve the efficiency of mining while ensuring safe production and save costs caused by blind mining.

[0003] Existing devices drill down at a constant speed to sample coal mines. Due to the different rock distributions in the strata, when the drill pipe is drilling down at a constant speed through hard rock layers, the pressure between the drill pipe and the strata increases, making it easy for the drill pipe to get stuck in the borehole, resulting in drilling and sampling failure. However, existing devices cannot change the downward movement speed of the drill pipe according to the pressure between the drill pipe and the strata. Therefore, it is necessary to design a drilling device for coal mine exploration with waste gas collection function that can change the downward movement speed of the drill pipe according to the pressure between the drill pipe and the strata, in order to address the shortcomings of the existing technology. Summary of the Invention

[0004] To overcome the shortcomings of the existing devices, the present invention provides a drilling device for coal mine exploration with waste gas collection function.

[0005] The technical implementation scheme of the present invention is as follows: a drilling device for coal mine exploration with waste gas collection function, comprising a base plate, symmetrical first fixed rods fixed to the base plate by means of a mounting plate, a sliding frame slidably connected between the symmetrical first fixed rods, a rotating sleeve rotatably connected to the sliding frame, a spline groove provided at the lower part of the rotating sleeve, a first spline rod slidably connected in the spline groove at the lower part of the rotating sleeve, a drill barrel fixedly connected to the lower end of the first spline rod, a first fixed plate fixedly connected to the lower part of the first spline rod, and an elastic element sleeved on the first spline rod, with the two ends of the elastic element respectively fixed... Connected to the rotating sleeve and the first fixed plate, the pressure between the drill barrel and the formation increases, the elastic element is compressed, and the elastic element buffers the pressure between the drill barrel and the formation. The sliding frame is fixedly connected to the support frame, the support frame is fixedly connected to the first drive motor, the output shaft of the first drive motor is fixedly connected to the gear, the upper part of the rotating sleeve is fixedly connected to the gear meshing with the gear on the output shaft of the first drive motor, the drill barrel is equipped with a cooling and anti-friction mechanism, which is used to reduce the friction between the drill barrel and the stone column, and the bottom plate is equipped with a lifting mechanism, which is used to drive the sliding frame to move downward.

[0006] Furthermore, the cooling and anti-friction mechanism includes a rotating shell, which is rotatably connected to the drill barrel. An annular cavity is provided between the drill barrel and the rotating shell. A connecting ring is rotatably connected to the upper part of the drill barrel. An annular groove is provided on the inner annular surface of the connecting ring. The upper part of the drill barrel is provided with circumferentially spaced through holes. The circumferentially spaced through holes of the drill barrel connect the annular groove of the connecting ring to the annular cavity between the drill barrel and the rotating shell. The lower part of the rotating shell is provided with circumferentially spaced through holes. The connecting ring is fixedly connected to and connected to a water inlet pipe. The water inlet pipe is fixedly connected to the sliding frame.

[0007] Furthermore, the lifting mechanism includes a lead screw fixed to the base plate, a threaded sleeve rotatably connected to the rear of the sliding frame, the threaded sleeve being threadedly connected to the lead screw, a first extrusion plate fixed to the lower part of the threaded sleeve, a second extrusion plate slidably connected to the lower part of the threaded sleeve, a first rotating ring rotatably connected to the upper side of the second extrusion plate, both the first and second extrusion plates being frustoconical in shape, a rotating rod rotatably connected to the sliding frame, a speed-changing component at the lower end of the rotating rod for changing the rotation speed of the threaded sleeve, and an anti-jamming component at the upper end of the rotating rod for preventing the drill barrel from jamming.

[0008] Furthermore, the transmission assembly includes a third extrusion plate, which is fixed to the lower end of the rotating rod. A first connecting plate is rotatably connected to a first fixed plate. A second fixed rod is slidably connected to the first connecting plate. The second fixed rod is fixed to the third extrusion plate. A fourth extrusion plate is slidably connected to the second fixed rod. Both the third and fourth extrusion plates are frustoconical in shape. A second rotating ring is rotatably connected to the lower side of the fourth extrusion plate. A rigid belt is wound between the third and fourth extrusion plates and between the first and second extrusion plates. A symmetrical second connecting plate is fixed between the first and second rotating rings. The first connecting plate is provided with a power conversion component, which is used to change the distance between the third and fourth extrusion plates.

[0009] Furthermore, the rigid belt is made of metal, and its cross-section is trapezoidal. The two sides of the rigid belt are respectively attached to the third and second extrusion plates, the first extrusion plate, and the fourth extrusion plate.

[0010] Furthermore, the power conversion component includes a fixed frame, which is fixed to the lower side of the sliding frame. A second fixed rod passes through the fixed frame and is slidably connected to it. A first telescopic rod is fixed to the lower side of the fixed frame. The telescopic end of the first telescopic rod is fixed to a first connecting plate. The sliding frame is fixed with symmetrical second telescopic rods. The telescopic ends of the second telescopic rods are respectively fixed to adjacent second connecting plates. An oil guide pipe connects the first telescopic rod and the symmetrical second telescopic rods. Both the first telescopic rod and the symmetrical oil guide pipes are filled with hydraulic oil.

[0011] Furthermore, the anti-jamming component includes a first limiting member, which is fixedly connected to the upper end of the rotating rod. A second drive motor is fixedly connected to the support frame. A second spline rod is fixedly connected to the output shaft of the second drive motor. The second spline rod is slidably connected to the second limiting member. The first limiting member and the second limiting member are in a limiting engagement. A sliding rod is slidably connected to the upper part of the rotating sleeve. The lower end of the sliding rod is rotatably connected to the first spline rod. A third connecting plate is rotatably connected to the upper end of the sliding rod. The third connecting plate is rotatably connected to the second limiting member.

[0012] Furthermore, it also includes a centering mechanism for stabilizing the drill barrel. The centering mechanism is located on the base plate and includes symmetrically distributed L-shaped plates. The symmetrically distributed L-shaped plates are fixed to the base plate and a positioning ring is fixed to the symmetrically distributed L-shaped plates. The drill barrel passes through the positioning ring and slides with it. A protective sleeve is fixed to the lower part of the positioning ring, and a support ring is fixed to the lower side of the protective sleeve. The positioning ring is equipped with a gas collection component for collecting harmful gases generated during drilling.

[0013] Furthermore, the protective sleeve is designed as a telescopic sleeve, which is used to collect harmful gases generated during drilling.

[0014] Furthermore, the gas collection assembly includes an exhaust pipe, which is fixedly connected to and communicates with a positioning ring. A mounting plate for fixing the first fixing rod is fixedly connected to a second fixing plate. A sliding frame is fixedly connected to symmetrical limiting plates. A through hole is provided in the middle of the limiting plate. A connecting rope is fixedly connected to the second fixing plate. The connecting rope passes through the through hole of the limiting plate. The lower end of the connecting rope is fixedly connected to a support ring. A positioning plate is fixedly connected to the connecting rope. The positioning plate is located on the upper side of the adjacent limiting plate.

[0015] By adopting the above solution, the present invention has the following advantages:

[0016] 1. By monitoring the extrusion pressure between the drill barrel and the bottom layer through the first elastic element, the transmission ratio between the third and fourth extrusion plates and the second and first extrusion plates is changed. This reduces the rotation speed of the threaded sleeve while keeping the output shaft of the second drive motor constant. This reduces the downward movement speed of the sliding frame, preventing the drill barrel from moving too fast and the extrusion pressure between the drill barrel and the bottom layer from increasing continuously, which could cause the drill barrel to get stuck at the bottom layer and result in failure of coal mine sampling.

[0017] 2. The drill barrel rotates around the rotating shell, which reduces the friction between the drill barrel and the stone pillar. This prevents the drill barrel from rubbing against the stone pillar inside for a long time, which would cause the temperature of the inner wall of the drill barrel to rise. At the same time, the water in the cavity of the drill barrel and the rotating shell cools the teeth at the lower end of the drill barrel, preventing the stone pillar from filling the drill barrel and obstructing the downward flow of water, which would cause the teeth at the lower end of the drill barrel to be damaged by long-term high temperature.

[0018] 3. When the second limiting component loses its fit with the first limiting component, the threaded sleeve stops rotating after the drill barrel is subjected to excessive pressure from the bottom layer. This prevents excessive squeezing pressure between the drill barrel and the bottom layer from causing the drill barrel to get stuck in the borehole.

[0019] 4. The protective sleeve collects harmful gases generated during the drilling process, preventing workers from inhaling them. At the same time, the protective sleeve blocks the debris ejected from the drill pipe, preventing it from injuring nearby workers when it contacts the ground. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a side view of the three-dimensional structure of the present invention.

[0022] Figure 3 This is a cross-sectional three-dimensional structural diagram of the rotating sleeve and drill barrel of the present invention.

[0023] Figure 4 This is a cross-sectional perspective view of the connecting ring and rotating shell components of the present invention.

[0024] Figure 5 This is a side-view three-dimensional structural diagram of the lifting mechanism of the present invention.

[0025] Figure 6 This is a cross-sectional perspective view of the sliding frame and threaded sleeve components of the present invention.

[0026] Figure 7 This is a cross-sectional perspective view of the third extrusion plate and the fourth extrusion plate of the present invention.

[0027] Figure 8 This is a three-dimensional structural diagram of the anti-jamming component of the present invention in its working state.

[0028] Figure 9 This is a three-dimensional structural diagram of the centering mechanism of the present invention.

[0029] Figure 10 This is a cross-sectional three-dimensional structural diagram of the positioning ring and protective sleeve of the present invention.

[0030] Figure 11 This is an enlarged three-dimensional structural diagram of point A in the present invention.

[0031] In the attached diagrams: 101: Base plate; 102: First fixed rod; 103: Sliding frame; 104: Rotating sleeve; 105: First splined rod; 106: Drill barrel; 107: First fixed plate; 108: Elastic element; 109: Support frame; 110: First drive motor; 201: Rotating housing; 202: Connecting ring; 203: Water inlet pipe; 301: Lead screw; 302: Threaded sleeve; 303: First extrusion plate; 304: Second extrusion plate; 305: First rotating ring; 306: Rotating rod; 307: Third extrusion plate; 308: First connecting plate; 309: Second fixed rod. 310: Fourth extrusion plate; 311: Second rotating ring; 312: Rigid belt; 313: Second connecting plate; 314: Fixing frame; 315: First telescopic rod; 316: Second telescopic rod; 401: First limiting member; 402: Second drive motor; 403: Second spline rod; 404: Second limiting member; 405: Sliding rod; 406: Third connecting plate; 501: L-shaped plate; 502: Positioning ring; 503: Protective sleeve; 504: Support ring; 505: Exhaust pipe; 506: Second fixing plate; 507: Limiting plate; 508: Connecting rope; 509: Positioning plate. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0033] Example 1: A drilling device for coal mine exploration with waste gas collection function, such as... Figures 1-4As shown, the system includes a base plate 101, to which two symmetrical first fixed rods 102 are fixedly connected via a mounting plate. A sliding frame 103 is slidably connected between the two symmetrical first fixed rods 102. The sliding frame 103 moves vertically up and down along the two first fixed rods 102. A rotating sleeve 104 is rotatably connected to the sliding frame 103. A first spline rod 105 is slidably connected to the lower part of the rotating sleeve 104 via a spline groove. A drill barrel 106 is fixedly connected to the lower end of the first spline rod 105. The rotating sleeve 104 drives the first spline rod 105 to rotate circumferentially via the spline groove. The first spline rod 105 drives the drill barrel 106 to rotate circumferentially for drilling and sampling in the coal mine. A first fixed plate 107 is fixedly connected to the lower part of the first spline rod 105. An elastic element 108 is sleeved on the first spline rod 105. The rotating sleeve 104 and the first fixed plate 107 are fixedly connected to the elastic element 108, which is a spring. Located on the first spline rod 105, the elastic force of the elastic element 108 is greater than the squeezing force required for the drill barrel 106 to drill downward normally. The pressure between the drill barrel 106 and the formation increases, and the elastic element 108 is compressed. The elastic element 108 buffers the pressure between the drill barrel 106 and the formation. The sliding frame 103 is fixedly connected to the support frame 109, and the support frame 109 is fixedly connected to the first drive motor 110. The output shaft of the first drive motor 110 is fixedly connected to a gear. The upper part of the rotating sleeve 104 is fixedly connected to a gear that meshes with the gear on the output shaft of the first drive motor 110. The output shaft of the first drive motor 110 drives the rotating sleeve 104 to rotate circumferentially through the meshing of the gears, so that the drill barrel 106 drills downward to collect samples. The drill barrel 106 is provided with a cooling and anti-friction mechanism to reduce the friction between the drill barrel 106 and the stone column. The base plate 101 is provided with a lifting mechanism to drive the sliding frame 103 to move downward.

[0034] like Figure 3 and Figure 4As shown, the cooling and anti-friction mechanism includes a rotating shell 201, which is rotatably connected to the drill barrel 106. The rotating shell 201 is used to reduce the friction between the drill barrel 106 and the stone pillar, preventing the drill barrel 106 from being exposed to high temperatures for extended periods due to prolonged friction. An annular cavity is provided between the drill barrel 106 and the rotating shell 201, and the drill barrel 106 and the rotating shell 201 are sealed together. A connecting ring 202 is rotatably connected to the upper part of the drill barrel 106. An annular groove is provided on the inner annular surface of the connecting ring 202. The drill barrel 106 is provided with circumferentially spaced through holes. The circumferentially spaced through holes connect the annular groove of the connecting ring 202 with the annular cavity between the drill barrel 106 and the rotating shell 201. The lower part of the rotating shell 201 is provided with circumferentially spaced through holes. The connecting ring 202 is fixedly connected to and connected to a water inlet pipe 203. The water inlet pipe 203 is connected to a water injection device. The water injection device injects clean water into the water inlet pipe 203. The clean water flows out from the through holes of the rotating shell 201 to cool the lower teeth of the drill barrel 106. The water inlet pipe 203 is fixedly connected to the sliding frame 103.

[0035] like Figures 5-8 As shown, the lifting mechanism includes a lead screw 301, which is fixedly connected to the base plate 101. A threaded sleeve 302 is rotatably connected to the rear of the sliding frame 103. The threaded sleeve 302 is threadedly connected to the lead screw 301. The threaded sleeve 302 rotates along the lead screw 301, causing the sliding frame 103 to move along the lead screw 301. The sliding frame 103 causes the circumferentially rotating drill barrel 106 to move downwards for drilling and sampling in the coal mine. A first extrusion plate 303 is fixedly connected to the lower part of the threaded sleeve 302, and a second extrusion plate 303 is slidably connected to the lower part of the threaded sleeve 302. Plate 304, first extrusion plate 303 and second extrusion plate 304 are both set as frustoconical. The upper side of the second extrusion plate 304 is rotatably connected to a first rotating ring 305. The first extrusion plate 303 and the second extrusion plate 304 are close to each other to change the downward movement speed of the sliding frame 103. The sliding frame 103 is rotatably connected to a rotating rod 306. The lower end of the rotating rod 306 is provided with a speed change component, which is used to change the rotation speed of the threaded sleeve 302. The upper end of the rotating rod 306 is provided with an anti-jamming component to prevent the drill barrel 106 from jamming.

[0036] like Figures 5-8As shown, the transmission assembly includes a third extrusion plate 307, which is fixedly connected to the lower end of the rotating rod 306. A first connecting plate 308 is rotatably connected to a first fixed plate 107. As the distance between the drill barrel 106 and the sliding frame 103 decreases, the first fixed plate 107 drives the first connecting plate 308 to move closer to the sliding frame 103. A second fixed rod 309 is fixedly connected to the lower side of the third extrusion plate 307. The second fixed rod 309 passes through the first connecting plate 308 and is slidably connected to it. A fourth extrusion plate 310 is slidably connected to the second fixed rod 309. Both the third extrusion plate 307 and the fourth extrusion plate 310 are frustoconical in shape. The third extrusion plate 307 and the fourth extrusion plate 310 cooperate to change the downward movement speed of the sliding frame 103. A second rotating ring 311 is rotatably connected to the lower side of the fourth extrusion plate 310. A rigid belt 312 is wound between the third extrusion plate 307 and the fourth extrusion plate 310 and between the first extrusion plate 303 and the second extrusion plate 304. 2 is made of metal, and the cross-section of the rigid belt 312 is trapezoidal. The rigid belt 312 does not deform after being squeezed, and the third extrusion plate 307 and the fourth extrusion plate 310 cooperate with the first extrusion plate 303 and the second extrusion plate 304 to make the speed change stepless between the third extrusion plate 307 and the fourth extrusion plate 310 and the first extrusion plate 303 and the second extrusion plate 304. The two sides of the rigid belt 312 are respectively in contact with the third extrusion plate 307 and the second extrusion plate 304 and the first extrusion plate 303 and the fourth extrusion plate 310 to increase the contact area between the rigid belt 312 and the third extrusion plate 307 and the fourth extrusion plate 310 and the first extrusion plate 303 and the second extrusion plate 304. Two symmetrical second connecting plates 313 are fixed between the first rotating ring 305 and the second rotating ring 311. The first connecting plate 308 is provided with a power conversion component, which is used to change the distance between the third extrusion plate 307 and the fourth extrusion plate 310.

[0037] like Figures 5-7As shown, the power conversion component includes a fixed frame 314, which is fixedly connected to the lower side of the sliding frame 103. A second fixed rod 309 passes through the fixed frame 314 and is slidably connected to it. A first telescopic rod 315 is fixedly connected to the lower side of the fixed frame 314. The telescopic end of the first telescopic rod 315 is fixedly connected to a first connecting plate 308. When the distance between the drill barrel 106 and the sliding frame 103 decreases, the first fixed plate 107 drives the first connecting plate 308 to move closer to the sliding frame 103, causing the telescopic end of the first telescopic rod 315 to move upward, thus sliding... The frame 103 is fixedly connected with symmetrical second telescopic rods 316. The telescopic ends of the second telescopic rods 316 are respectively fixed to adjacent second connecting plates 313. There is an oil guide pipe connecting the first telescopic rod 315 and the two symmetrical second telescopic rods 316. The first telescopic rod 315 and the symmetrical oil guide pipes are filled with hydraulic oil. When the telescopic end of the first telescopic rod 315 moves upward, the hydraulic oil in the first telescopic rod 315 flows along the oil guide pipe to the two second telescopic rods 316. The two second telescopic rods 316 then push the second connecting plates 313 downward.

[0038] like Figure 8 As shown, the anti-jamming assembly includes a first limiting member 401, which is fixedly connected to the upper end of the rotating rod 306. A second drive motor 402 is fixedly connected to the support frame 109. A second spline rod 403 is fixedly connected to the output shaft of the second drive motor 402. The second spline rod 403 is slidably connected to a second limiting member 404. The second spline rod 403 drives the second limiting member 404 to rotate via a spline. The first limiting member 401 and the second limiting member 404 are in a limiting engagement. The second spline rod 403 drives the second limiting member 404 to rotate. The second limiting member 404 and the first limiting member 401 are in a limiting engagement. The first limiting member 401 drives the rotating rod 306 to rotate circumferentially. The upper part of the rotating sleeve 104 is slidably connected to the sliding rod 405. The lower end of the sliding rod 405 is rotatably connected to the first spline rod 105. The upper end of the sliding rod 405 is rotatably connected to the third connecting plate 406. The third connecting plate 406 is rotatably connected to the second limiting member 404. The third connecting plate 406 drives the second limiting member 404 to move upward, causing the second limiting member 404 to lose its engagement with the first limiting member 401. This causes the second drive motor 402 to stop driving the rotating rod 306, and the threaded sleeve 302 to stop rotating.

[0039] When using this drilling device, the operator installs it in the designated position and connects the water injection device to the water inlet pipe 203. Then, the operator simultaneously starts the first drive motor 110 and the second drive motor 402. The output shaft of the first drive motor 110 drives the gears on it to rotate, which in turn drives the gears on the rotating sleeve 104. This causes the rotating sleeve 104 to rotate circumferentially along the sliding frame 103. The rotating sleeve 104, through the spline groove and the first spline rod 105, drives the drill barrel 106 to rotate circumferentially. Simultaneously, the output shaft of the second drive motor 402 drives the second spline rod 403, which is fixed to it, to rotate circumferentially. The second spline rod 403 then drives the second limiting member 40... The drill barrel 106 rotates circumferentially. The second limiting member 404 drives the first limiting member 401 to rotate circumferentially. The first limiting member 401 drives the rotating rod 306 to rotate circumferentially. The rotating rod 306 drives the third extrusion plate 307 and the fourth extrusion plate 310 to rotate circumferentially. The third extrusion plate 307 and the fourth extrusion plate 310 drive the first extrusion plate 303 and the second extrusion plate 304 to rotate circumferentially through the rigid belt 312. The first extrusion plate 303 and the second extrusion plate 304 drive the threaded sleeve 302 to rotate. The threaded sleeve 302 rotates along the lead screw 301. The threaded sleeve 302 drives the sliding frame 103 to move downward along the two first fixed rods 102. As the drill barrel 106 rotates circumferentially, the drill barrel 106 gradually drills into the strata to sample the coal mine.

[0040] During the downward drilling process of the drill barrel 106, the workers activated the water injection device. Clean water flowed along the water inlet pipe 203 into the annular groove of the connecting ring 202. The clean water in the connecting ring 202 entered the annular cavity between the drill barrel 106 and the rotating shell 201 through the through hole of the drill barrel 106. Subsequently, the clean water cooled the drill barrel 106 through the through hole of the rotating shell 201. When the drilled stone column entered the drill barrel 106, after the stone column came into contact with the rotating shell 201, a pressure was generated between the rotating shell 201 and the stone column. Friction reduces friction between the drill barrel 106 and the stone pillar, preventing long-term friction between the drill barrel 106 and the stone pillar, which would otherwise cause the temperature of the inner wall of the drill barrel 106 to rise. At the same time, the water in the cavity of the drill barrel 106 and the rotating shell 201 cools the teeth at the lower end of the drill barrel 106, preventing the water from being blocked due to the stone pillar filling the drill barrel 106 and causing the teeth at the lower end of the drill barrel 106 to be damaged due to long-term high temperature.

[0041] During the downward drilling process of the drill barrel 106, the drill barrel 106 samples different layers of rock. When the drill barrel 106 contacts a hard rock layer, the pressure from the formation increases. The sliding frame 103 drives the drill barrel 106 downward through the rotating sleeve 104. After the drill barrel 106 is subjected to formation pressure, the sliding frame 103 continues to move downward along the two first fixed rods 102. The first spline rod 105 slides upward along the spline groove of the rotating sleeve 104, the elastic element 108 is compressed, and the distance between the drill barrel 106 and the sliding frame 103 decreases. The first connecting plate 308 slides towards the sliding frame 103 along the second fixed rod 309. The first connecting plate 308 drives the telescopic end of the first telescopic rod 315 to move towards the sliding frame 103. The hydraulic oil in the first telescopic rod 315 enters the two second telescopic rods 316 along the oil guide pipe. The telescopic ends of the two second telescopic rods 316 drive the adjacent second connecting plate 313 downward. The second connecting plate 313 passes through the first fixed rod 309 and slides towards the sliding frame 103. The rotating ring 305 drives the second extrusion plate 304 to move closer to the first extrusion plate 303. The second extrusion plate 304 and the first extrusion plate 303 move closer to each other, causing the rigid belt 312 between the second extrusion plate 304 and the first extrusion plate 303 to expand outward. The second connecting plate 313 drives the fourth extrusion plate 310 away from the third extrusion plate 307 through the second rotating ring 311. The rigid belt 312 between the fourth extrusion plate 310 and the third extrusion plate 307 contracts inward, changing the transmission ratio between the third extrusion plate 307 and the fourth extrusion plate 310 and the second extrusion plate 304 and the first extrusion plate 303. The output shaft of the second drive motor 402 reduces the rotation speed of the threaded sleeve 302 while keeping the rotation speed constant. This reduces the downward movement speed of the sliding frame 103, preventing the drill barrel 106 from moving too fast. The increasing pressure between the drill barrel 106 and the bottom layer causes the drill barrel 106 to get stuck at the bottom layer, resulting in the failure of coal mine sampling.

[0042] During the continuous drilling process of the drill barrel 106, when the drill barrel 106 penetrates hard rock strata, the distance between the sliding frame 103 and the drill barrel 106 decreases. The first spline rod 105 drives the sliding rod 405 to move upward along the rotating sleeve 104. The sliding rod 405 drives the third connecting plate 406 to move upward. The third connecting plate 406 drives the second limiting member 404 to move upward. The second limiting member 404 moves upward along the second spline rod 403. The second limiting member 404 and the first limiting member 401 gradually move away from each other. After the drill barrel 106 passes through the hard rock strata, the elastic member 108... Under the elastic force, the first spline rod 105 moves downward along the rotating sleeve 104 to reset, thus restoring the sliding frame 103 and the drill barrel 106 to their initial positions. During the reset process of the drill barrel 106, the first spline rod 105 drives the sliding rod 405 to move downward to reset. The sliding rod 405 drives the second limiting member 404 to move downward through the third connecting plate 406. Moreover, during the reset process of the drill barrel 106 to its initial position, the first fixing plate 107 drives the first connecting plate 308 to move downward, and the first connecting plate 308 drives the telescopic end of the first telescopic rod 315 to reset. Hydraulic oil flows back into the first telescopic rod 315. The telescopic ends of the two second telescopic rods 316 drive the two second connecting plates 313 to move upward and reset. The second pressing plate 304 and the fourth pressing plate 310 are both reset, restoring the rigid belt 312 to its initial state. The transmission ratio between the first pressing plate 303 and the second pressing plate 304 and the third pressing plate 307 and the fourth pressing plate 310 is restored to its initial state, restoring the rotational speed of the threaded sleeve 302 to its initial state. The sliding frame 103 moves downward along the two first fixed rods 102 at its initial speed. Drilling continues downward at the initial speed. After the drill barrel 106 moves to the lowest side, drilling is completed. The operator then controls the output shaft of the second drive motor 402 to rotate in the opposite direction. The threaded sleeve 302 rotates in the opposite direction and moves upward along the lead screw 301. The drill barrel 106 drives the stone column inside to move upward and reset. The operator then removes the stone column from the drill barrel 106. The operator then shuts off the two first drive motors 110 and the second drive motor 402. At the same time, the operator shuts off the water injection device and stops injecting water into the water inlet pipe 203. This completes the drilling and sampling of the coal mine.

[0043] Example 2: Based on Example 1, during the drilling process of the drill barrel 106 downwards in hard rock, when the sliding frame 103 moves downwards, the drilling speed of the drill barrel 106 is less than the downward movement speed of the sliding frame 103, the rotation speed of the threaded sleeve 302 decreases, and at the same time, the first spline rod 105 moves upwards along the rotating sleeve 104, the elastic element 108 is continuously compressed, the first spline rod 105 drives the sliding rod 405 to move upwards, and the third connecting plate 406 drives the second limiting member 404 to move upwards. When the second limiting member 404 loses its engagement with the first limiting member 401, the first limiting member 401 and the rotating rod 306 stop rotating. At this time, the threaded sleeve 302 stops rotating, and the sliding frame 103 stops. The drill barrel 106 stops moving downwards and continues to rotate. Under the elastic force of the elastic element 108, the drill barrel 106 drills downwards. The first spline rod 105 moves downwards along the rotating sleeve 104, and the second limiting element 404 moves downwards and re-engages with the first limiting element 401. When the drill barrel 106 passes through a hard rock layer, under the elastic force of the elastic element 108, the first spline rod 105 drives the sliding rod 405 to reset, and the second limiting element 404 resets. By the second limiting element 404 losing its engagement with the first limiting element 401, the threaded sleeve 302 stops rotating after the drill barrel 106 is subjected to excessive pressure from the bottom layer, thus preventing excessive squeezing pressure between the drill barrel 106 and the bottom layer, which could cause the drill barrel 106 to get stuck in the borehole.

[0044] Example 3: Based on Example 2, such as Figure 9 and Figure 10 As shown, it also includes a centering mechanism for stabilizing the drill barrel 106. The centering mechanism is set on the base plate 101 and includes two symmetrically distributed L-shaped plates 501. The two symmetrically distributed L-shaped plates are fixed to the base plate 101. The two symmetrically distributed L-shaped plates 501 are fixed to a positioning ring 502. The drill barrel 106 passes through the positioning ring 502 and slides with it. The positioning ring 502 is used to stabilize the drill barrel 106 and prevent the drill barrel 106 from shaking after contacting the ground. A protective sleeve 503 is fixed to the lower part of the positioning ring 502. The protective sleeve 503 is set as a telescopic sleeve. The protective sleeve 503 is used to collect harmful gases generated during drilling. The protective sleeve 503 covers the harmful gases generated in the formation and prevents the harmful gases from drifting into the air and causing harm to the workers. A support ring 504 is fixed to the lower side of the protective sleeve 503. The positioning ring 502 is equipped with a gas collection component. The gas collection component is used to collect harmful gases generated during drilling.

[0045] like Figure 10 and Figure 11As shown, the gas collection assembly includes an exhaust pipe 505, which is fixedly connected to and communicates with a positioning ring 502. The exhaust pipe 505 is connected to a waste gas collection device to collect harmful gases generated in the formation. A second fixing plate 506 is fixedly connected to the mounting plate used to fix the first fixing rod 102. A symmetrical limiting plate 507 is fixedly connected to the sliding frame 103. A through hole is provided in the middle of the limiting plate 507. A connecting rope 508 is fixedly connected to the second fixing plate 506. The connecting rope 508 passes through the through hole of the limiting plate 507. The lower end of the connecting rope 508 is fixedly connected to a support ring 504. A positioning plate 509 is fixedly connected to the connecting rope 508. The positioning plate 509 is located on the upper side of the adjacent limiting plate 507. The diameter of the positioning plate 509 is larger than the through hole of the limiting plate 507. The limiting plate 507 pushes the positioning plate 509 to move upward, so that the limiting plate 507 drives the connecting rope 508 to move upward, so that the protective sleeve 503 is re-stacked and reset.

[0046] As the sliding frame 103 moves downward along the two first fixed rods 102, the worker connects the exhaust pipe 505 to the waste collection device. The sliding frame 103 drives the drill barrel 106 downward, which moves downward along the positioning ring 502. The positioning ring 502 stabilizes the drill barrel 106, improving the stability of the device and preventing it from shaking after contacting the ground. The sliding frame 103 drives the two limiting plates 507 downward. Under the gravity of the protective sleeve 503, the protective sleeve 503 drives the lower ends of the two connecting ropes 508 downward. Then, the upper bent part of the connecting rope 508 is stretched, and the protective sleeve 503 gradually extends. The lower end of the protective sleeve 503 moves downward and fits against the ground. The sliding frame 103 drives the two limiting plates 507 to continue moving downward. The limiting plates 507 move downward along the adjacent connecting ropes 508. The protective sleeve 503 stabilizes the lower end of the connecting ropes 508. Harmful gases generated during drilling by the drill barrel 106 are collected to prevent workers from inhaling them. Simultaneously, the protective sleeve 503 blocks debris ejected from the drill barrel 106, preventing injury to surrounding workers from debris generated when the drill barrel 106 contacts the ground. After drilling is completed, the sliding frame 103 moves the two limiting plates 507 upwards to reset. When the limiting plates 507 contact the adjacent positioning plates 509, they move upwards, causing the adjacent positioning plates 509 to move upwards. The positioning plates 509 then move the connecting rope 508 upwards, which in turn moves the support ring 504 upwards. The support ring 504 pushes the lower end of the protective sleeve 503 upwards, causing the protective sleeve 503 to re-stacking and reset. Simultaneously, the upper part of the connecting rope 508 bends. Workers then shut off the exhaust gas collection device and disconnect the exhaust pipe 505 from the exhaust gas collection device.

[0047] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A drilling device for coal mine exploration with waste gas collection function, characterized in that: The system includes a base plate (101), to which symmetrical first fixed rods (102) are fixedly connected via a mounting plate. A sliding frame (103) is slidably connected between the symmetrical first fixed rods (102). A rotating sleeve (104) is rotatably connected to the sliding frame (103). A spline groove is provided at the lower part of the rotating sleeve (104). A first spline rod (105) is slidably connected in the spline groove at the lower part of the rotating sleeve (104). A drill barrel (106) is fixedly connected to the lower end of the first spline rod (105). A first fixed plate (107) is fixedly connected to the lower part of the first spline rod (105). An elastic element (108) is sleeved on the first spline rod (105). The two ends of the elastic element (108) are respectively fixed to the rotating sleeve (104) and the first fixed plate. (107) The pressure between the drill barrel (106) and the formation increases, the elastic element (108) is compressed, the elastic element (108) buffers the pressure between the drill barrel (106) and the formation, the sliding frame (103) is fixedly connected to the support frame (109), the support frame (109) is fixedly connected to the first drive motor (110), the output shaft of the first drive motor (110) is fixedly connected to the gear, the upper part of the rotating sleeve (104) is fixedly connected to the gear meshing with the gear on the output shaft of the first drive motor (110), the drill barrel (106) is provided with a cooling and anti-friction mechanism, the cooling and anti-friction mechanism is used to reduce the friction between the drill barrel (106) and the stone column, the bottom plate (101) is provided with a lifting mechanism, the lifting mechanism is used to drive the sliding frame (103) to move downward; The lifting mechanism includes a lead screw (301), which is fixed to the base plate (101). A threaded sleeve (302) is rotatably connected to the rear of the sliding frame (103). The threaded sleeve (302) is threadedly connected to the lead screw (301). A first extrusion plate (303) is fixedly connected to the lower part of the threaded sleeve (302). A second extrusion plate (304) is slidably connected to the lower part of the threaded sleeve (302). A first rotating ring (305) is rotatably connected to the upper side of the second extrusion plate (304). Both the first extrusion plate (303) and the second extrusion plate (304) are frustoconical. A rotating rod (306) is rotatably connected to the sliding frame (103). A speed-changing component is provided at the lower end of the rotating rod (306). The speed-changing component is used to change the rotation speed of the threaded sleeve (302). An anti-jamming component is provided at the upper end of the rotating rod (306) to prevent the drill barrel (106) from jamming. The transmission assembly includes a third extrusion plate (307), which is fixedly connected to the lower end of a rotating rod (306). A first connecting plate (308) is rotatably connected to a first fixed plate (107). A second fixed rod (309) is slidably connected to the first connecting plate (308). The second fixed rod (309) is fixedly connected to the third extrusion plate (307). A fourth extrusion plate (310) is slidably connected to the second fixed rod (309). Both the third extrusion plate (307) and the fourth extrusion plate (310) are frustoconical in shape. A second rotating ring (311) is rotatably connected to the lower side of the third extrusion plate (307) and the fourth extrusion plate (310). A rigid belt (312) is wound between the third extrusion plate (307) and the fourth extrusion plate (310) and between the first extrusion plate (303) and the second extrusion plate (304). A symmetrical second connecting plate (313) is fixed between the first rotating ring (305) and the second rotating ring (311). A power conversion component is provided on the first connecting plate (308). The power conversion component is used to change the distance between the third extrusion plate (307) and the fourth extrusion plate (310). The rigid belt (312) is made of metal and has a trapezoidal cross-section. The two sides of the rigid belt (312) are respectively attached to the third extrusion plate (307) and the second extrusion plate (304), the first extrusion plate (303), and the fourth extrusion plate (310).

2. A drilling device for coal mine exploration with waste gas collection function according to claim 1, characterized in that: The cooling and anti-friction mechanism includes a rotating shell (201), which is rotatably connected to the drill barrel (106). An annular cavity is provided between the drill barrel (106) and the rotating shell (201). A connecting ring (202) is rotatably connected to the upper part of the drill barrel (106). An annular groove is provided on the inner annular surface of the connecting ring (202). A circumferentially spaced through hole is provided on the upper part of the drill barrel (106). The circumferentially spaced through hole connects the annular groove of the connecting ring (202) with the annular cavity between the drill barrel (106) and the rotating shell (201). A circumferentially spaced through hole is provided on the lower part of the rotating shell (201). A water inlet pipe (203) is fixedly connected to and connected to the connecting ring (202). The water inlet pipe (203) is fixedly connected to the sliding frame (103).

3. A drilling device for coal mine exploration with waste gas collection function according to claim 2, characterized in that: The power conversion component includes a fixed frame (314), which is fixed to the lower side of the sliding frame (103). A second fixed rod (309) passes through the fixed frame (314) and is slidably connected to it. A first telescopic rod (315) is fixed to the lower side of the fixed frame (314). The telescopic end of the first telescopic rod (315) is fixed to the first connecting plate (308). A symmetrical second telescopic rod (316) is fixed to the sliding frame (103). The telescopic ends of the second telescopic rod (316) are respectively fixed to the adjacent second connecting plates (313). An oil guide pipe is connected between the first telescopic rod (315) and the symmetrical second telescopic rod (316). Both the first telescopic rod (315) and the symmetrical oil guide pipe are filled with hydraulic oil.

4. A drilling device for coal mine exploration with waste gas collection function according to claim 3, characterized in that: The anti-jamming component includes a first limiting member (401), which is fixed to the upper end of the rotating rod (306). A second drive motor (402) is fixed to the support frame (109). A second spline rod (403) is fixed to the output shaft of the second drive motor (402). The second spline rod (403) is slidably connected to the second limiting member (404). The first limiting member (401) and the second limiting member (404) are in a limiting engagement. A sliding rod (405) is slidably connected to the upper part of the rotating sleeve (104). The lower end of the sliding rod (405) is rotatably connected to the first spline rod (105). A third connecting plate (406) is rotatably connected to the upper end of the sliding rod (405). The third connecting plate (406) is rotatably connected to the second limiting member (404).

5. A drilling device for coal mine exploration with waste gas collection function according to claim 4, characterized in that: It also includes a centering mechanism for stabilizing the drill barrel (106), which is located on the base plate (101). The centering mechanism includes symmetrically distributed L-shaped plates (501), which are fixed to the base plate (101). A positioning ring (502) is fixed to the symmetrically distributed L-shaped plates (501). The drill barrel (106) passes through the positioning ring (502) and slides with it. A protective sleeve (503) is fixed to the lower part of the positioning ring (502). A support ring (504) is fixed to the lower side of the protective sleeve (503). A gas collection component is provided on the positioning ring (502). The gas collection component is used to collect harmful gases generated during drilling.

6. A drilling device for coal mine exploration with waste gas collection function according to claim 5, characterized in that: The protective sleeve (503) is configured as a telescopic sleeve, and the protective sleeve (503) is used to collect harmful gases generated during drilling.

7. A drilling device for coal mine exploration with waste gas collection function according to claim 6, characterized in that: The gas collection assembly includes an exhaust pipe (505), which is fixedly connected to and connected to a positioning ring (502). A mounting plate for fixing the first fixing rod (102) is fixedly connected to a second fixing plate (506). A sliding frame (103) is fixedly connected to symmetrical limiting plates (507). A through hole is provided in the middle of the limiting plate (507). A connecting rope (508) is fixedly connected to the second fixing plate (506). The connecting rope (508) passes through the through hole of the limiting plate (507). The lower end of the connecting rope (508) is fixedly connected to a support ring (504). A positioning plate (509) is fixedly connected to the connecting rope (508). The positioning plate (509) is located on the upper side of the adjacent limiting plate (507).

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