Deep coal mine in-situ fidelity coring sealing device

Abstract

The invention discloses a deep coal mine in-situ fidelity coring sealing device, and relates to the technical field of sampling, the deep coal mine in-situ fidelity coring sealing device comprises a reamer and a drill bit, the top of the reamer is provided with a sampling structure, and the sampling structure is provided with a detachable storage structure; the sampling structure comprises a sampling outer pipe, a sampling inner pipe, four sampling pipes, a displacement mechanical arm structure, a second mounting frame and two fourth supporting pieces, the sampling inner pipe is rotationally mounted in the sampling outer pipe, a pre-storage structure is connected between the sampling inner pipe and the bottom of an inner cavity of the sampling outer pipe, and the sampling work cannot be affected when coal slime slurry in a sampling space where the sampling groove is located is discharged; a certain distance is formed between the bottom of the sampling groove and the fourth supporting piece located at the bottom, so that the coal slime slurry cannot enter the coring sealing device in the sampling process, and the influence of the coal slime slurry on the sample is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sampling, in particular to an in-situ fidelity coring and sealing device for deep coal mines. Background Art

[0002] Coal resources are different from other resources. They are non-renewable resources. In places where there are no or very few coal resources, it is impossible to produce or change them at will. Therefore, in coal-bearing areas, only surveys and explorations can ensure the smooth development of coal resources.

[0003] At present, when sampling devices for coal mine exploration in deep soil are used in actual use, the sampling rod needs to go deeper and deeper, and groundwater, coal mines in different coal seams, and soil in different positions are easily mixed into coal slurry under the action of rotating stirring force. These coal slurries have a certain fluidity. The existing sampling devices usually ignore the existence of coal slurry, resulting in the presence of a large amount of water, mud and coal mines in different positions on the obtained samples, causing the coal mine samples to be contaminated. Summary of the invention

[0004] In order to solve the problems raised in the prior art, the present invention provides the following technical solutions: an in-situ fidelity coring and sealing device for deep coal mines, comprising a reamer and a drill bit, a sampling structure is installed on the top of the reamer, a detachable storage structure is installed on the sampling structure, the sampling structure comprises a sampling outer tube, a sampling inner tube, four sampling tubes, a displacement mechanical arm structure, a mounting frame 2 and two supporting members 4, sampling grooves are provided on the outer sides of the sampling inner tube and the sampling outer tube, a transmission disk is provided at one end of one of the sampling tubes away from the sampling groove, two thin rods are rotatably connected to the transmission disk, reaming plates are fixedly installed on the outer sides of the two thin rods, a transmission assembly is provided between the two thin rods, a clamping assembly is provided on the outer side of the sampling tube, the position of the transmission disk is controlled by the displacement mechanical arm structure, and the two thin rods are fixedly provided with a reaming plate. Each of the four support members is fixedly sleeved on the outside of the sampling outer tube, and two of the four support members are fixedly installed with elastic telescopic members inside, and a fidelity sampling assembly is installed on the outside of the four support members located at the upper part, and the sampling inner tube is rotatably installed inside the sampling outer tube and is connected with a pre-storage structure between the bottom of the inner cavity of the sampling outer tube, and the pre-storage structure plays a role in controlling the position of the sampling inner tube and installing the other three sampling tubes, and the four sampling tubes are fixedly connected with an internal threaded member 2 and an internal threaded member 1 inside, and the detachable storage structure includes a jacket, a battery storage tank, four external threaded members 3, a temperature sensor and a gas sensor, and a thermal insulation guide assembly is arranged between the four external threaded members 3 and the storage tank, and a guide cavity is opened on the four external threaded members 3, and a heat conduction frame is arranged inside the guide cavity.

[0005] Preferably, the outer sleeve is fixed with an external threaded part 2, and multiple threaded holes are opened on the outside of the outer sleeve and the outside of the sampling outer tube. An external threaded part 1 is fixedly installed on the bottom of the sampling outer tube, and a reamer is arranged at the bottom of the external threaded part 1, and a drill bit is fixedly connected to the bottom end of the reamer.

[0006] Preferably, the pre-stored structure includes a forward and reverse motor three fixedly mounted on a mounting frame two and a transmission tube rotatably mounted inside a sampling outer tube, the output end of the forward and reverse motor three passes through the mounting frame two and is rotatably connected to the mounting frame two, a transmission gear three is fixedly mounted on the output end of the forward and reverse motor three, a gear ring two is meshed on the outer side of the transmission gear three, the gear ring two is fixedly mounted inside the transmission tube, a plurality of bent rods are fixedly connected between the top of the gear ring two and the sampling inner tube, two clamping frames are fixedly connected inside the transmission tube, a plug-in plate is arranged between the two clamping frames, three fixing frames are fixedly connected to one side of the plug-in plate, and magnet rings are fixedly connected to the three fixing frames.

[0007] Preferably, the thermal insulation and diversion assembly includes a cryogenic pump, which is fixedly installed at the bottom of one side of the storage tank and the water inlet end of the cryogenic pump is connected to the inner cavity of the storage tank, the water outlet end of the cryogenic pump is fixedly installed with a diversion tube three, one end of the diversion tube three is fixedly connected to a diversion tube four, one side of the four externally threaded parts three are fixedly connected to a flow detector, one end of the four flow detectors are fixedly connected to the diversion tube four with an electromagnetic valve two, the heat conductive frame is fixedly connected to the externally threaded part three, the internal thread of the externally threaded part three is installed with the externally threaded part four, the temperature sensor and the gas sensor are both installed on the externally threaded part four, and the battery and the storage tank are both fixedly connected to the outer jacket.

[0008] Preferably, a guide tube 1 is fixedly connected between the two elastic telescopic parts, both ends of the guide tube 1 pass through adjacent support parts 4, one side of the guide tube 1 is fixedly connected to an electromagnetic valve 1, one end of the electromagnetic valve 1 is fixedly connected to a water pump, a liquid storage tank is installed at the water inlet end of the water pump, the electromagnetic valve 1 passes through the outer wall of the sampling outer tube and extends to the inside of the sampling outer tube, and the water pump and the liquid storage tank are both installed inside the sampling outer tube.

[0009] Preferably, the fidelity sampling assembly includes a sludge pump, a drain pipe is installed at the water outlet of the sludge pump, one end of the drain pipe extends to the outside of the sampling outer tube, a guide pipe 2 is installed at the water inlet of the sludge pump, a drain valve is fixedly connected between the guide pipe 2 and the sampling outer tube, the drain pipe is arranged at the top of the support member 4 located at the top, the drain valve is arranged at the bottom of the support member 4 located at the top, a suction pipe is fixedly installed on the drain valve, the sampling trough is arranged between two support members 4, and the bottom end of the suction pipe is arranged at the bottom of the sampling trough.

[0010] Preferably, the displacement mechanical arm structure includes two sliding sleeves sleeved on the outer sides of mounting frame 1 and mounting frame 2, the mounting frame 2 is fixedly installed inside the sampling outer tube, the mounting frame 1 is fixedly installed between the two sliding sleeves, the mounting frame 1 is fixedly connected to two fixing plates on the side away from the sampling tube, a multi-stage telescopic pneumatic cylinder is fixedly connected between the top of the fixing plate located at the top and the mounting frame 2, a transmission circular plate is rotatably connected inside the mounting frame 1, the mounting frame 1 is provided with mounting grooves at the top and the bottom, the two mounting grooves are both equipped with electromagnets, and the electromagnets are fixedly installed on the mounting frame 1.

[0011] Preferably, the displacement mechanical arm structure includes a forward and reverse motor 1 fixedly installed between two fixed plates, the output end of the forward and reverse motor 1 is fixedly connected to a transmission circular plate, and the side of the transmission circular plate close to the transmission disk is fixedly connected to a multi-stage telescopic hydraulic cylinder and three telescopic rods, and the piston end of the multi-stage telescopic hydraulic cylinder and the piston ends of the three telescopic rods are all fixedly connected to the transmission disk.

[0012] Preferably, the transmission assembly includes transmission gear 2, transmission gear 1 fixedly mounted on the outside of the thin rod, gear ring 1 and forward and reverse motor 2, wherein the transmission gear 2 is fixedly mounted on the output end of the forward and reverse motor 2, the gear ring 1 is rotatably mounted on the transmission disk and meshes with two transmission gears 1, the transmission gear 2 is meshed with one of the transmission gears 1, a circular groove is opened on the transmission disk, the forward and reverse motor 2 is arranged inside the circular groove and fixedly connected to the transmission disk.

[0013] Preferably, the clamping assembly includes a pneumatic cylinder fixedly mounted on a transmission disk, a transmission ring fixedly mounted on the piston end of the pneumatic cylinder, and two transmission plug plates fixedly mounted on the transmission ring, one end of each of the two transmission plug plates passes through the transmission disk and extends to the outside of an adjacent sampling tube, a friction plate is provided on one side of the transmission plug plate close to the sampling tube, a mounting frame three is provided on the other side of the transmission plug plate, and a plurality of dampers are fixedly connected between the mounting frame three and the friction plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present application, the discharge of the coal slurry inside the sampling space where the sampling trough is located will not affect the sampling work, and the bottom of the sampling trough is at a certain distance from the support member four located at the bottom, so the coal slurry will not enter the core sampling and sealing device during the sampling process, reducing the impact of the coal slurry on the sample and reducing the workload of cleaning the inside of the core sampling and sealing device in the later stage. The sampling tube entering the hole rotates forward and moves toward the outside of the column. At this time, there is already space outside the columnar coal mine that needs to be destroyed on the forward path of the rotating sampling tube, and the forward resistance of the sampling tube is small, which increases the possibility that the coal mine entering the sampling tube is a complete column, thereby improving the sampling quality.

[0015] 2. In the present application, the sharp and thin end of the transmission plug plate is arranged between the friction plate and the mounting frame three, so as to facilitate the resetting of the transmission plug plate to control the position between the friction plate and the sampling tube, so as to achieve the purpose of supporting the sampling tube and the coal sample inside the sampling tube by the top external threaded part three and sealing and preserving. When sampling the coal by cooperating with the displacement mechanical arm structure, the pre-storage structure and the detachable storage structure, the obtained sample will not come into contact with the coal mud slurry composed of different coal seams, soil and water during the movement and sealing process, thereby ensuring the authenticity of the material composition of the coal sample.

[0016] 3. The pre-stored structure supporting three sampling tubes and the four external threaded parts three set in the detachable storage structure in the present application can meet the sampling work of multiple positions in one drilling, reduce the cost investment in coal mine exploration sampling, and one side of the four external threaded parts three is provided with an independently working flow detector and solenoid valve two. The sealed storage temperature of each coal mine sample is controlled in real time according to the preset temperature to ensure the authenticity of the coal mine sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the partial structure of the sampling outer tube of the present invention; Figure 3 A top view of the sampling outer tube of the present invention; Figure 4 It is a structural schematic diagram of a fourth support member of the present invention; Figure 5 It is a structural schematic diagram of the second mounting frame of the present invention; Figure 6 It is a structural schematic diagram of the second gear ring of the present invention; Figure 7 It is a structural schematic diagram of a mounting frame 1 of the present invention; Figure 8 It is a structural schematic diagram of the transmission disc of the present invention; Fig. 9 It is a partial structural schematic diagram of the transmission ring of the present invention; Fig.10 It is a schematic diagram of the structure of the sampling tube of the present invention; Fig.11 For the present invention Fig.10 A magnified view of the structure of part A; Fig.12 The structure of the plug board of the present invention is schematically shown; Fig.13 For the present invention Fig.12 A magnified view of the structure of part B; Fig.14 It is a structural schematic diagram of the flow guide pipe 3 of the present invention; Fig.15 It is a schematic structural diagram of the external threaded component three of the present invention.

[0018] Numbers in the figure: 1, sampling structure; 11, sampling outer tube; 12, external threaded part 1; 13, external threaded part 2; 14, threaded hole; 15, sampling inner tube; 16, sampling slot; 17, sampling tube; 18, internal threaded part 1; 19, internal threaded part 2; 110, transmission plate; 114, telescopic rod; 116, multi-stage telescopic hydraulic cylinder; 117, mounting frame 1; 118, transmission circular plate; 119, forward and reverse motor 1; 120, fixing plate; 12 1. Mounting slot; 122. Electromagnet; 123. Sliding sleeve; 124. Mounting frame 2; 125. Multi-stage telescopic pneumatic cylinder; 126. Thin rod; 127. Hole expansion plate; 128. Transmission gear 1; 129. Gear ring 1; 130. Transmission gear 2; 131. Forward and reverse motor 2; 132. Round slot; 133. Pneumatic cylinder; 134. Transmission ring; 135. Transmission plug plate; 136. Mounting frame 3; 137. Damper; 138. Friction plate; 139, support member 4; 140, elastic expansion member; 141, guide tube 1; 142, water pump; 143, liquid storage tank; 144, solenoid valve 1; 145, sludge pump; 146, drainage pipe; 147, guide tube 2; 148, sewage valve; 149, suction pipe; 2, pre-stored structure; 21, forward and reverse motor 3; 22, transmission gear 3; 23, gear ring 2; 24, bending rod; 25, transmission pipe; 26, clamping frame; 27, plug Connecting plate; 28. Fixing frame; 29. ​​Magnet ring; 3. Removable storage structure; 30. Jacket; 31. Battery; 32. Storage tank; 33. Cryogenic pump; 34. Flow guide tube three; 35. Flow guide tube four; 36. Solenoid valve two; 37. Flow detector; 38. External thread part three; 39. Flow guide chamber; 310. Heat conduction frame; 311. External thread part four; 312. Temperature sensor; 313. Gas sensor; 4. Hole expander; 5. Drill bit. DETAILED DESCRIPTION

[0019] The following will be combined with the 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] Example: Figure 1-Figure 15As shown, the present invention provides a technical solution for an in-situ true-to-life coring and sealing device for deep coal mines, comprising a reamer 4 and a drill bit 5, a sampling structure 1 is installed on the top of the reamer 4, a detachable storage structure 3 is installed on the sampling structure 1, the sampling structure 1 comprises a sampling outer tube 11, a sampling inner tube 15, four sampling tubes 17, a displacement mechanical arm structure, a mounting frame 124 and two supporting members 139, the sampling inner tube 15 is rotatably installed inside the sampling outer tube 11 and is connected to the bottom of the inner cavity of the sampling outer tube 11 by a pre-storage structure 2, the pre-storage structure 2 plays a role in controlling the position of the sampling inner tube 15 and installing the other three sampling tubes 17.

[0021] Specifically, a microcomputer storing a pre-edited numerical control program is provided in the sampling structure 1, and the microcomputer controls each device in the sampling structure 1, the pre-stored structure 2, and the detachable storage structure 3 according to the preset program to work according to a preset workload to complete the above-mentioned sampling work, or a remote communication module is provided on each device in the sampling structure 1, the pre-stored structure 2, and the detachable storage structure 3, and a ground human-computer interaction device is used to remotely control each device to work according to a preset workload to complete the above-mentioned sampling work, which are all existing commonly used technical means and will not be elaborated again.

[0022] When the coring and sealing device composed of the sampling structure 1, the pre-storage structure 2 and the detachable storage structure 3 is used; First, pick up the reamer 4 with the drill bit 5 fixedly connected to the bottom end, align the external threaded part 12 fixedly installed on the bottom of the sampling outer tube 11 with the threaded structure on the reamer 4, then rotate the reamer 4 to the outside of the external threaded part 12, and fix the outer sleeve 30 with the external threaded part 2 13, the external threaded part 2 13 is used for threaded installation of the drill rod, and the rotation direction of the threaded structure when the external threaded part 2 13 is installed with the drill rod and the rotation direction of the threaded structure when the external threaded part 12 is installed with the reamer 4 are the same as the rotational drilling direction of the drill rod, so that the rotational drilling of the drill rod will not separate the sampling structure 1 from the reamer 4. A plurality of threaded holes 14 are provided on the outside of the outer jacket 30 and the outside of the sampling outer tube 11. After the battery 31, the storage tank 32, the guide tube 35 and other structures in the detachable storage structure 3 are inserted into the sampling outer tube 11, the outer jacket 30 is rotated to align the threaded holes 14 on the outer jacket 30 with the threaded holes 14 on the sampling outer tube 11, and then the sampling outer tube 11 and the outer jacket 30 are installed together using bolts matching the threaded holes 14; the drill rod is responsible for applying the rotational downward force, the coring and sealing device is responsible for sampling at the sampling position, the drill bit 5 is responsible for drilling, and the reamer 4 is responsible for reaming.

[0023] During coal mine drilling, when the sampling outer tube 11 moves down to the preset sampling position, the drill rod is controlled to stop moving, and the sampling structure 1 stays at the preset position of the borehole. During sampling: First, the water pump 142 and the electromagnetic valve 144 in the sampling structure 1 are controlled to work. The water pump 142 draws water from the liquid storage tank 143 fixedly installed at the water inlet end. Since the two support members 139 fixedly installed outside the sampling outer tube 11 are both fixedly installed with elastic expansion members 140, one side of the flow guide tube 141 fixedly connected between the two elastic expansion members 140 is fixedly connected with the electromagnetic valve 144. Figure 4 As shown, the electromagnetic valve 144 penetrates the outer wall of the sampling outer tube 11 and extends into the interior of the sampling outer tube 11 and is fixedly connected with the water outlet end of the water pump 142, so the water pump 142 transports water to the interior of the electromagnetic valve 144 which is open for operation. Under the action of the electromagnetic valve 144 and the guide tube 141, water enters the interior of the two elastic telescopic parts 140. The two elastic telescopic parts 140 are filled with water and expand to contact the inner wall of the borehole. The borehole is a relatively regular circular hole formed by the reamer 4 and the drill bit 5 of regular shape. The elastic elastic telescopic part 140 can be closely attached to the inner wall of the borehole in the initial deformation. As the hydraulic pressure inside the elastic telescopic part 140 increases, the force required for the deformation of the elastic telescopic part 140 increases, so that the elastic telescopic part 140 plays the role of separating the top and bottom coal slurry. A relatively sealed sampling space is formed between the two elastic telescopic parts 140, and the sampling groove 16 on the sampling outer tube 11 and the sampling groove 16 on the sampling inner tube 15 are both between the two elastic telescopic parts 140. Figure 1 As shown, at this time, the two sampling slots 16 are located inside the relatively sealed sampling space formed by the two elastic telescopic members 140. After a period of time, the control solenoid valve 144 stops working and closes, and the water pump 142 stops working; Then, the sludge pump 145 and the drain valve 148 in the fidelity sampling assembly are controlled to work. One end of the drain pipe 146 installed at the outlet end of the sludge pump 145 extends to the outside of the sampling outer tube 11. The drain pipe 146 is arranged at the top of the support member 139 located at the top. Therefore, the drain pipe 146 is arranged at the top of the sampling space. The water inlet end of the sludge pump 145 is installed with a guide pipe 147. The drain valve 148 fixedly connected between the guide pipe 147 and the sampling outer tube 11 is arranged on the outside of the sampling outer tube 11, and the drain valve 148 is arranged at the bottom of the support member 139 located at the top. The bottom end of the suction pipe 149 fixed by the valve 148 is arranged at the bottom of the sampling groove 16, so the suction pipe 149 is connected with the bottom of the inner cavity of the sampling space. At this time, the drain valve 148 is open, and the sludge pump 145 extracts the coal sludge slurry from the bottom of the inner cavity of the sampling space through the guide pipe 147, the drain valve 148 and the suction pipe 149. Then, the sludge pump 145 discharges the coal sludge slurry through the drain pipe 146, and discharges most of the coal sludge slurry inside the sampling space, so as to avoid a large amount of coal sludge slurry in the samples obtained subsequently, reduce the impact on the samples, and keep the obtained samples in a real state.

[0024] Subsequently, the pre-stored structure 2 is controlled to work, and the forward and reverse motor 3 21 installed on the mounting frame 2 124 in the pre-stored structure 2 works forwardly. Since the output end of the forward and reverse motor 3 21 passes through the mounting frame 2 124 and is rotationally connected to the mounting frame 2 124, and the outer side of the transmission gear 3 22 fixedly installed at the bottom of the output end of the forward and reverse motor 3 21 is meshed with the gear ring 2 23, as shown in FIG. Figure 6 As shown, the gear ring 23 is fixedly installed inside the transmission tube 25 rotatably installed inside the sampling outer tube 11. When the gear ring 23 can rotate, the forward and reverse motor 3 21 works to drive the gear ring 23 to rotate through the transmission gear 3 22. The multiple bent rods 24 fixedly connected between the top of the gear ring 23 and the sampling inner tube 15 rotate along with the gear ring 23, and the sampling inner tube 15 rotatably installed inside the sampling outer tube 11 rotates, so that the pre-stored structure 2 controls the position of the sampling inner tube 15. After a period of time, the forward and reverse motor 3 21 stops working, and the sampling inner tube 15 rotates 90° at this time to align the sampling slot 16 opened in the sampling outer tube 11 with the sampling slot 16 opened in the sampling outer tube 11. Figure 2 As shown, at this time, the coal slurry inside the sampling space where the sampling groove 16 is located is discharged without affecting the sampling work, and there is a certain distance between the bottom of the sampling groove 16 and the support member 139 located at the bottom, so the coal slurry will not enter the core sampling and sealing device during the sampling process, reducing the workload of cleaning the inside of the core sampling and sealing device in the later stage.

[0025] Then, the multi-stage telescopic hydraulic cylinder 116 and the forward and reverse motor 119 in the displacement mechanical arm structure are controlled to work, and the transmission circular plate 118 fixedly connected to the output end of the working forward and reverse motor 119 is driven to rotate, and the piston end of the multi-stage telescopic hydraulic cylinder 116 fixedly connected to the rotating transmission circular plate 118 and the piston ends of the three telescopic rods 114 are fixedly connected to the transmission disk 110, such as Figure 8As shown, under the action of the multi-stage telescopic hydraulic cylinder 116 and the three telescopic rods 114, the transmission disc 110 is driven to rotate by the transmission circular plate 118, and the thin rod 126 installed on the transmission disc 110 is driven to rotate, and the transmission disc 110 rotates synchronously with the transmission disc 110 through the sampling tube 17 clamped and fixed by the clamping assembly; at the same time, the multi-stage telescopic hydraulic cylinder 116 works to push the transmission disc 110 and the sampling tube 17 installed on one side of the transmission disc 110 to move toward the inner wall of the borehole, and the sharp end of the thin rod 126 rotating synchronously with the transmission disc 110 is at the front in the forward direction, and the two rotating thin rods 1 26 is grooved at the sampling position of the coal mine, and then the expansion plate 127 fixedly connected to the outside of the thin rod 126 has the structural characteristics of being small in front and large in the back, thin in front and thick in the back, and low in front and high in the back. The expansion plate 127 rotating synchronously with the thin rod 126 plays a role of expanding the hole, dividing a columnar coal mine on the coal mine, and then the sampling tube 17 entering the hole rotates forward and moves toward the outside of the column. At this time, there is already space on the outside of the columnar coal mine that needs to be destroyed on the forward path of the rotating sampling tube 17, and the forward resistance of the sampling tube 17 is small, which increases the possibility that the coal mine entering the sampling tube 17 is a complete column, thereby improving the sampling quality.

[0026] Subsequently, after the sampling tube 17 advances to a preset movement amount, the multi-stage telescopic hydraulic cylinder 116 is controlled to stop working, and the forward and reverse motor 131 in the transmission assembly is controlled to work. After the forward and reverse motor 131 installed inside the circular groove 132 opened on the transmission plate 110 works, the transmission gear 130 fixedly installed at the output end of the forward and reverse motor 131 rotates, and the transmission gear 1 128 is fixedly sleeved on the outer sides of the two thin rods 126. Figure 8As shown, the transmission gear 2 130 is meshed with one of the transmission gears 1 128, so the rotating transmission gear 2 130 drives the meshed transmission gear 1 128 to rotate, the gear ring 129 is rotatably installed on the transmission plate 110 and meshes with the two transmission gears 128, and the rotating transmission gear 128 drives the other transmission gear 128 to rotate through the gear ring 129, so that the thin rods 126 installed on the two transmission gears 128 are all rotated, and the rotation of the thin rod 126 drives the expansion plate 127 to rotate at the same time. At this time, the forward and reverse motor 119 controls the transmission plate 110 to rotate and drive the thin rod 126 and the expansion plate 127 to rotate, and the thin rod 126 drives the expansion plate 127 to rotate. 127 opens a groove on the coal column at one end of the sampling tube 17 to reduce the strength of the connection structure where the coal sample and the coal body are separated. After a period of time, the forward and reverse motor 119 is controlled to stop working, and the two thin rods 126 stop rotating and are in the sampling position. When the two thin rods 126 are in the initial position, the plane between the two thin rods 126 is a vertical plane. At this time, the two thin rods 126 are in the sampling position, and the plane between the two thin rods 126 is a horizontal plane; at the same time, the forward and reverse motor 2 131 is controlled to stop working, and the rear parts of the two expansion plates 127 are in contact with the sampling tube 17, and part of them are in contact with the coal sample entering the sampling tube 17. At this time, the holes opened by the expansion plates 127 can allow the thin rods 126 and the sampling tube 17 to move up and down; Then, the multi-stage telescopic pneumatic cylinder 125 and two electromagnets 122 in the control displacement mechanical arm structure work. Since the mounting frame 1 117 is fixedly installed between the two sliding sleeves 123 sleeved outside the mounting frame 2 124, as shown in FIG. Figure 7As shown, the mounting frame 117 moves up and down inside the mounting frame 2 124. Among the two fixed plates 120 fixedly connected to the side of the mounting frame 117 away from the sampling tube 17, the fixed plate 120 located at the top is fixedly installed with the piston end of the multi-stage telescopic pneumatic cylinder 125. The multi-stage telescopic pneumatic cylinder 125 can control the up and down position of the mounting frame 117. Because the mounting frame 117 is provided with mounting grooves 121 at the top and bottom, the electromagnet 122 arranged inside the mounting groove 121 is fixedly installed on the mounting frame 117. At this time, the electromagnet 122 works to generate magnetic force and adsorbs and fixes the iron transmission circular plate 118 together, so that the position of the transmission circular plate 118 is restricted and fixed. The transmission circular plate 118 is connected to the telescopic rod 11 4 and the transmission disk 110 installed by the multi-stage telescopic hydraulic cylinder 116, and the sampling tube 17 fixed by the transmission disk 110 through the clamping assembly are limited and cannot rotate; therefore, the working multi-stage telescopic pneumatic cylinder 125 controls the upper and lower positions of the mounting frame 117, the transmission circular plate 118 rotatably installed inside the mounting frame 117, the transmission disk 110, and the sampling tube 17 fixed by the transmission disk 110 through the clamping assembly through the fixing plate 120. At this time, the multi-stage telescopic pneumatic cylinder 125 works to control the sampling tube 17 to move up and down in a small range, separating the coal sample inside the sampling tube 17 from the coal. After a period of time, the multi-stage telescopic pneumatic cylinder 125 stops working, the upper and lower positions of the mounting frame 117 and the sampling tube 17 are restored.

[0027] Subsequently, the multi-stage telescopic hydraulic cylinder 116 is controlled to work and contract to drive the transmission disk 110, the sampling tube 17 and the coal sample inside the sampling tube 17 back to the sampling outer tube 11. During this process, the rear parts of the two expansion plates 127 are in contact with the coal sample entering the sampling tube 17. The two expansion plates 127 limit the coal sample inside the sampling tube 17 to prevent the coal sample from escaping from the sampling tube 17. When the sampling tube 17 enters the sampling outer tube 11 with the coal sample, the forward and reverse motor 3 21 in the pre-stored structure 2 reverses and drives the sampling inner tube 15 to rotate 90° and reset, so that the two sampling inner tubes 15 are staggered. At this time, the three sampling tubes 17 supported by the pre-stored structure 2 move to the movement path of the transmission disk 110 and enter a standby state. The inside of the sampling outer tube 11 is restored to a sealed state, and the coal sample sampling work is completed.

[0028] Subsequently, the solenoid valve 144 is controlled to open. At this time, the water pump 142 does not work to apply force to the water. The contraction force of the elastically deformed elastic telescopic member 140 is sufficient to push the internal water through the opened solenoid valve 144 and the water pump 142 back to the liquid storage tank 143, so that the elastic telescopic member 140 returns to its original state, the sampling work is completed, and the drilling work continues.

[0029] Subsequently, the forward and reverse motor 2 131 in the transmission assembly is controlled to reverse 90°, so that the thin rod 126 rotates 90°, and the expansion plate 127 is controlled to be in a position where the thin rod 126 is away from the sampling tube 17, and one end of the sampling tube 17 is unblocked.

[0030] Subsequently, the multi-stage telescopic pneumatic cylinder 125 is controlled to work and control the mounting frame 117, the transmission plate 110, the sampling tube 17 fixed by the transmission plate 110 through the clamping assembly, and the coal sample inside the sampling tube 17 to move upward, so that the sampling tube 17 moves toward the uppermost external threaded part 38 among the four external threaded parts 38 arranged from top to bottom in the detachable storage structure 3, so that the sampling tube 17 with the coal sample inside is aligned with the uppermost external threaded part 38. At this time, the relative position between the sampling tube 17 and the original sampling tube 17 is rotated by 90°, and the sampling tube 17 is rotated by 90°. The internal threaded member 19 and the internal threaded member 18 are fixedly connected inside 17. The threaded structure arranged inside the internal threaded member 18 is meshed with the threaded structure arranged outside the external threaded member 38 near one end of the sampling tube 17. Coal is a material with low hardness. Even if the coal sample debris enters the threaded structure, it will not affect the meshing of the threaded structure. Then, the multi-stage telescopic hydraulic cylinder 116 is controlled to work to push the transmission disk 110 and the sampling tube 17 to move toward the uppermost external threaded member 38. After a period of time, the control electromagnet 122 stops working and the transmission circular plate 118 loses its fixed position. The forward and reverse motor 119 drives the transmission circular plate 118 to rotate. The transmission circular plate 118 drives the transmission disc 110 and the sampling tube 17 fixed on one side of the transmission disc 110 to rotate through the telescopic rod 114 and the multi-stage telescopic hydraulic cylinder 116, so that the internal threaded part 18 is rotated and threadedly installed on the outside of the external threaded part 38. At this time, the external threaded part 38 applies a thrust to the coal mine sample, and the coal mine sample moves inside the sampling tube 17 to meet the installation requirements of the sampling tube 17 and the external threaded part 38. When the sampling tube 17 is installed to the outside of the external threaded part 38, the external threaded part 38 is preset. After the heat conducting frame 310 is in position, the internal threaded part 19 is sleeved onto the outside of the heat conducting frame 310 installed inside the guide cavity 39 formed on the external threaded part 38. The internal threaded part 18 and the internal threaded part 19 are both provided with threaded structures, and the outsides of the external threaded part 38 and the heat conducting frame 310 are both provided with threaded structures, so that the heat conducting frame 310 is in contact with the internal threaded part 19; and in this process, the forward and reverse motor 119 works to drive the transmission circular plate 118 to rotate multiple complete circles. After the forward and reverse motor 119 stops working, a horizontal plane is still formed between the two thin rods 126.

[0031] Subsequently, the pneumatic cylinder 133 fixedly mounted on the transmission disk 110 in the clamping assembly is controlled to work, and the pneumatic cylinder 133 pushes the transmission ring 134 fixedly mounted on the piston end and the two transmission plugs 135 fixedly mounted on the transmission ring 134 to move, so that the transmission plugs 135 move toward the side of the transmission disk 110 away from the sampling tube 17. One end of the two transmission plugs 135 penetrates the transmission disk 110 and extends to the outside of the adjacent sampling tube 17. A friction plate 138 is provided on the side of the transmission plug 135 close to the sampling tube 17 to contact the outer wall of the sampling tube 17. Fig.11 As shown, two friction plates 138 are arranged on both sides of the sampling tube 17 to clamp the sampling tube 17. After the thicker part of the transmission plug plate 135 leaves between the friction plate 138 and the mounting frame 136, the friction plate 138 loses support. A plurality of dampers 137 are fixedly connected between the mounting frame 136 and the friction plate 138 and contract to drive the friction plate 138 away from the sampling tube 17, so that the sampling tube 17 loses fixation. At this time, the sharp and thinner end of the transmission plug plate 135 is arranged between the friction plate 138 and the mounting frame 136. 36, it is convenient for the transmission plug plate 135 to reset and control the position between the friction plate 138 and the sampling tube 17, so that the sampling tube 17 and the coal sample inside the sampling tube 17 are supported and sealed by the top external threaded member 38. When the coal is sampled by cooperating with the displacement mechanical arm structure, the pre-storage structure 2 and the detachable storage structure 3, the obtained sample will not contact the coal slurry composed of different coal seams, soil and water during the movement and sealing process, thereby ensuring the authenticity of the material composition of the coal sample; After the sampling tube 17 is installed to the outside of the topmost external threaded part 38, the temperature sensor 312 works to detect the temperature on one side and the temperature inside the internal threaded part 2 19 where the coal mine sample is located. At the same time, the cryogenic pump 33 in the detachable storage structure 3, the solenoid valve 2 36 connected to the topmost external threaded part 38 and the flow detector 37 are controlled to work. The cryogenic pump 33 is fixedly installed at the bottom of one side of the storage tank 32 and the water inlet end of the cryogenic pump 33 is connected to the inner cavity of the storage tank 32. The working cryogenic pump 33 extracts liquid nitrogen from the storage tank 32, and the cryogenic pump 33 transports the liquid nitrogen to the guide pipe 3 34 fixedly installed at the water outlet end. The guide pipe 4 35 fixedly connected to one end of the guide pipe 3 34 is fixedly connected to four solenoid valves 2 36. One side of the four external threaded parts 38 is fixedly connected to the adjacent solenoid valves 2 36 through the flow detector 37. At this time, the solenoid valve 2 36 connected to the topmost external threaded part 38 The magnetic valve 2 36 is in the working open state, and the flow detector 37 is in the working state. The liquid nitrogen entering the guide tube 4 35 enters the guide cavity 39 opened by the external threaded part 3 38 through the electromagnetic valve 2 36 and the flow detector 37, and the flow detector 37 detects the amount of liquid nitrogen passing through the inside. When the amount of liquid nitrogen passing through the flow detector 37 reaches the amount of liquid nitrogen calculated according to the temperature value detected by the temperature sensor 312, the electromagnetic valve 2 36 and the cryogenic pump 33 are controlled to stop working; the heat conductive frame 310 arranged inside the guide cavity 39 is in contact with the internal threaded part 2 19 on the outside of the coal mine sample, and the heat conductive frame 310 and the internal threaded part 2 19 are both made of materials with good thermal conductivity. Liquid nitrogen is used to cool the heat conductive frame 310 and the internal threaded part 2 19 to control the storage temperature of the coal mine sample, reduce the changes in the coal mine properties caused by temperature changes, and improve the authenticity of the coal mine sample.

[0032] A temperature sensor 312 and a gas sensor 313 are fixedly installed on the external threaded part 4 311 installed on the internal thread of the external threaded part 38. When the temperature detected by the temperature sensor 312 rises to a preset value, the cryogenic pump 33 and the electromagnetic valve 2 36 are controlled to add a certain amount of liquid nitrogen to the inside of the guide chamber 39 to control the storage temperature of the coal mine sample. The gas sensor 313 works to detect the gas content on one side to provide safety data for obtaining coal mine samples from the inside of the sampling tube 17 in the later stage, thereby reducing the damage caused by gas leakage.

[0033] Then, the multi-stage telescopic hydraulic cylinder 116 is controlled to contract, driving the transmission plate 110 and the thin rod 126 away from the external threaded part three 38, and the multi-stage telescopic pneumatic cylinder 125 is controlled to work to push the mounting frame 117 and the transmission plate 110 to move downward. Since the three sampling tubes 17 supported by the pre-stored structure 2 are in a standby state at this time, the downward-moving transmission plate 110 stays on the side of the topmost sampling tube 17 supported by the pre-stored structure 2.

[0034] Subsequently, the multi-stage telescopic hydraulic cylinder 116 is controlled to work to push the transmission disk 110 to move toward the outside of the top sampling tube 17 supported by the pre-stored structure 2. When the transmission disk 110 contacts the sampling tube 17, the multi-stage telescopic hydraulic cylinder 116 stops working, and the pneumatic cylinder 133 is controlled to work to pull the transmission ring 134 to move toward the transmission disk 110, so that the transmission plug plate 135 fixed by the transmission ring 134 pushes the friction plate 138 to move toward the outside of the sampling tube 17. Finally, the two friction plates 138 clamp and fix the top sampling tube 17 supported by the pre-stored structure 2. Since the iron internal threaded part 18 is fixed by the magnet ring 29 made of magnets in the pre-stored structure 2 through magnetic attraction, and the movement force applied by the multi-stage telescopic hydraulic cylinder 116 to the sampling tube 17 is greater than the force generated between the internal threaded part 18 and the magnet ring 29, the top sampling tube 17 supported by the pre-stored structure 2 The sampling tube 17 of the part is clamped and fixed by the transmission disk 110 and the clamping assembly controlled by the displacement mechanical arm structure and used. Then the displacement mechanical arm structure controls the sampling tube 17 to move to the original position of the previous sampling tube 17. After the coring and sealing device moves to the next sampling position, the coal mine sampling, sample sealing and preservation, sample storage temperature detection and control and other tasks are carried out according to the above steps. The three sampling tubes 17 supported by the pre-storage structure 2 and the four external threaded parts three 38 set in the detachable storage structure 3 can meet the sampling work of multiple positions of one drilling, reduce the cost investment of coal mine exploration sampling, and the four external threaded parts three 38 are provided with independently working flow detectors 37 and solenoid valves two 36 on one side. The sealed storage temperature of each coal mine sample is controlled in real time according to the preset to ensure the authenticity of the coal mine sample.

[0035] In addition, such as Figure 5 , Figure 6 and Fig.13 As shown, two clamping frames 26 are fixedly connected inside the transmission tube 25, and the plug-in plate 27 is inserted between the two clamping frames 26 and is in an interference fit state with the clamping frames 26, so after a certain force is applied to one side of the plug-in plate 27, the plug-in plate 27 can be disassembled, and three fixing frames 28 are fixedly connected to one side of the plug-in plate 27. The magnet ring 29 fixedly connected to the fixing frame 28 fixes the iron internal threaded part 18 fixed inside the sampling tube 17 through magnetic force; When the detachable storage structure 3 is separated from the sampling structure 1, and the pre-storage structure 2 controls the sampling inner tube 15 to be in a state where the sampling groove 16 on the sampling inner tube 15 is staggered with the sampling groove 16 on the sampling outer tube 11, there is sufficient movement space on the top of the plug-in board 27. The plug-in board 27 and the magnet ring 29 fixedly installed by the plug-in board 27 through the fixing frame 28 can be taken out of the sampling structure 1, so as to facilitate the control of the position of the sampling tube 17 installed on one side of the magnet ring 29, so that the sampling tube 17 meets the requirements of the above-mentioned sampling steps.

[0036] In addition, the number of the transmission plug plate 135, the friction plate 138 matched with the transmission plug plate 135, and the mounting frame 136 in the clamping assembly is set according to actual needs.

[0037] A storage battery 31 is provided to provide power for the core sampling and sealing device to perform coal mine sample sampling.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An in-situ fidelity coring and sealing device for deep coal mines, comprising a reamer (4) and a drill bit (5), characterized in that: A sampling structure (1) is installed on the top of the reamer (4), and a detachable storage structure (3) is installed on the sampling structure (1). The sampling structure (1) comprises a sampling outer tube (11), a sampling inner tube (15), four sampling tubes (17), a displacement mechanical arm structure, a second mounting frame (124) and two fourth supporting members (139). The sampling inner tube (15) is rotatably installed inside the sampling outer tube (11) and is connected to a pre-storage structure (2) at the bottom of the inner cavity of the sampling outer tube (11).

2. The deep coal mine in-situ fidelity coring and sealing device according to claim 1 is characterized by: The outer sides of the sampling inner tube (15) and the sampling outer tube (11) are provided with sampling grooves (16), one end of one of the sampling tubes (17) away from the sampling groove (16) is provided with a transmission disk (110), two thin rods (126) are rotatably connected to the transmission disk (110), and the outer sides of the two thin rods (126) are fixedly installed with expansion plates (127), a transmission assembly is provided between the two thin rods (126), a clamping assembly is provided on the outer side of the sampling tube (17), the position of the transmission disk (110) is controlled by a displacement mechanical arm structure, and the two support members (139) are fixedly sleeved on the sampling outer tube (11). On the outside, the pre-stored structure (2) serves to control the position of the sampling inner tube (15) and to install the other three sampling tubes (17). The four sampling tubes (17) are internally fixedly connected with an internal threaded member 2 (19) and an internal threaded member 1 (18). The two support members 4 (139) are internally fixedly installed with elastic telescopic members (140). The outer side of the support member 4 (139) located at the upper part is installed with a fidelity sampling assembly. The bottom of the sampling outer tube (11) is fixedly installed with an external threaded member 1 (12). The bottom of the external threaded member 1 (12) is provided with a reamer (4), and the bottom end of the reamer (4) is fixedly connected with a drill bit (5).

3. The deep coal mine in-situ fidelity coring and sealing device according to claim 1 is characterized by: The pre-stored structure (2) comprises a forward and reverse motor (21) fixedly mounted on a second mounting frame (124) and a transmission tube (25) rotatably mounted inside the sampling outer tube (11); the output end of the forward and reverse motor (21) passes through the second mounting frame (124) and is rotatably connected to the second mounting frame (124); a transmission gear (22) is fixedly mounted on the output end of the forward and reverse motor (21); a gear ring (23) is meshed on the outer side of the transmission gear (22); the gear ring (23) is fixedly mounted inside the transmission tube (25); a plurality of bent rods (24) are fixedly connected between the top of the gear ring (23) and the sampling inner tube (15); two clamping frames (26) are fixedly connected inside the transmission tube (25); a plug-in board (27) is arranged between the two clamping frames (26); three fixing frames (28) are fixedly connected to one side of the plug-in board (27); and magnet rings (29) are fixedly connected to the three fixing frames (28).

4. The deep coal mine in-situ fidelity coring and sealing device according to claim 1 is characterized by: The detachable storage structure (3) comprises a jacket (30), a storage tank (32) of a battery (31), four externally threaded parts (38), a temperature sensor (312) and a gas sensor (313); a heat-insulating flow-guiding component is arranged between the four externally threaded parts (38) and the storage tank (32); a flow-guiding cavity (39) is provided on each of the four externally threaded parts (38); a heat-conducting frame (310) is arranged inside the flow-guiding cavity (39); the heat-insulating flow-guiding component comprises a cryogenic pump (33); the cryogenic pump (33) is fixedly mounted on the bottom of one side of the storage tank (32); a water inlet end of the cryogenic pump (33) is connected to the inner cavity of the storage tank (32); a flow-guiding pipe (34) is fixedly mounted on the water outlet end of the cryogenic pump (33); one end of the flow-guiding pipe (34) is fixedly connected to A flow guide tube four (35), one side of the four externally threaded parts three (38) are all fixedly connected to a flow detector (37), one end of the four flow detectors (37) are all fixedly connected to the flow guide tube four (35) with a solenoid valve two (36), the heat conduction frame (310) is fixedly connected to the externally threaded part three (38), the externally threaded part four (311) is installed on the internal thread of the externally threaded part three (38), the temperature sensor (312) and the gas sensor (313) are both installed on the externally threaded part four (311), the battery (31) and the storage tank (32) are both fixedly connected to the outer jacket (30), the outer jacket (30) is fixedly connected to the externally threaded part two (13), and the outer side of the outer jacket (30) and the outer side of the sampling outer tube (11) are both provided with a plurality of threaded holes (14).

5. The deep coal mine in-situ fidelity coring and sealing device according to claim 2, characterized in that: A flow guide tube 1 (141) is fixedly connected between the two elastic telescopic members (140); both ends of the flow guide tube 1 (141) pass through adjacent support members 4 (139); one side of the flow guide tube 1 (141) is fixedly connected to an electromagnetic valve 1 (144); one end of the electromagnetic valve 1 (144) is fixedly connected to a water pump (142); a liquid storage tank (143) is installed at the water inlet end of the water pump (142); the electromagnetic valve 1 (144) passes through the outer wall of the sampling outer tube (11) and extends into the interior of the sampling outer tube (11); and the water pump (142) and the liquid storage tank (143) are both installed inside the sampling outer tube (11).

6. The deep coal mine in-situ fidelity coring and sealing device according to claim 2, characterized in that: The fidelity sampling assembly comprises a sludge pump (145), a drainage pipe (146) is installed at the water outlet of the sludge pump (145), one end of the drainage pipe (146) extends to the outside of the sampling outer tube (11), a guide pipe 2 (147) is installed at the water inlet of the sludge pump (145), a sewage valve (148) is fixedly connected between the guide pipe 2 (147) and the sampling outer tube (11), the drainage pipe (146) is arranged at the top of a support member 4 (139) located at the top, the sewage valve (148) is arranged at the bottom of the support member 4 (139) located at the top, a suction pipe (149) is fixedly installed on the sewage valve (148), the sampling trough (16) is arranged between two support members 4 (139), and the bottom end of the suction pipe (149) is arranged at the bottom of the sampling trough (16).

7. The deep coal mine in-situ fidelity coring and sealing device according to claim 1 is characterized by: The displacement mechanical arm structure comprises two sliding sleeves (123) sleeved on the outer sides of a mounting frame 1 (117) and a mounting frame 2 (124); the mounting frame 2 (124) is fixedly mounted inside a sampling outer tube (11); the mounting frame 1 (117) is fixedly mounted between the two sliding sleeves (123); two fixing plates (120) are fixedly connected to the side of the mounting frame 1 (117) away from the sampling tube (17); a multi-stage telescopic pneumatic cylinder (125) is fixedly connected between the top of the fixing plate (120) located at the top and the mounting frame 2 (124); a transmission circular plate (118) is rotatably connected inside the mounting frame 1 (117); mounting grooves (121) are provided at the top and the bottom of the mounting frame 1 (117); electromagnets (122) are installed in the two mounting grooves (121); and the electromagnets (122) are fixedly mounted on the mounting frame 1 (117).

8. The deep coal mine in-situ fidelity coring and sealing device according to claim 7, characterized in that: The displacement mechanical arm structure comprises a forward and reverse motor (119) fixedly mounted between two fixed plates (120); the output end of the forward and reverse motor (119) is fixedly connected to a transmission circular plate (118); a side of the transmission circular plate (118) close to a transmission disk (110) is fixedly connected to a multi-stage telescopic hydraulic cylinder (116) and three telescopic rods (114); the piston end of the multi-stage telescopic hydraulic cylinder (116) and the piston ends of the three telescopic rods (114) are both fixedly connected to the transmission disk (110).

9. The deep coal mine in-situ fidelity coring and sealing device according to claim 1, characterized in that: The transmission assembly comprises a second transmission gear (130), a first transmission gear (128) fixedly sleeved on the outer side of the thin rod (126), a first gear ring (129) and a second forward and reverse motor (131); the second transmission gear (130) is fixedly mounted on the output end of the second forward and reverse motor (131); the first gear ring (129) is rotatably mounted on the transmission disk (110) and meshes with the two first transmission gears (128); the second transmission gear (130) meshes with one of the first transmission gears (128); a circular groove (132) is provided on the transmission disk (110); the second forward and reverse motor (131) is arranged inside the circular groove (132) and is fixedly connected to the transmission disk (110).

10. The deep coal mine in-situ fidelity coring and sealing device according to claim 1, characterized in that: The clamping assembly comprises a pneumatic cylinder (133) fixedly mounted on a transmission disk (110), a transmission ring (134) fixedly mounted on a piston end of the pneumatic cylinder (133), and two transmission plug plates (135) fixedly mounted on the transmission ring (134); one end of each of the two transmission plug plates (135) penetrates the transmission disk (110) and extends to the outside of an adjacent sampling tube (17); a friction plate (138) is disposed on one side of the transmission plug plate (135) close to the sampling tube (17); a mounting frame three (136) is disposed on the other side of the transmission plug plate (135); and a plurality of dampers (137) are fixedly connected between the mounting frame three (136) and the friction plate (138).

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