Field geological shallow overburden area rock sampling device and sampling method

Abstract

The application belongs to the technical field of rock sampling, and specifically relates to a field geology shallow layer covered area rock sampling device and a sampling method; the device comprises a driving assembly, the side wall of the driving assembly is provided with an auxiliary assembly, the lower output end of the driving assembly is provided with a sampling assembly, and the lower portion of the sampling assembly is provided with a drilling assembly; the driving assembly comprises a driving shaft; the sampling assembly comprises a drill rod, a sampling cavity is formed in the inside of the drill rod, a plurality of side grooves are uniformly formed in the inner wall of the sampling cavity, an elastic rotating plate is rotationally connected to the lower portion of the inner wall of the side groove, and the side wall of the elastic rotating plate is provided with a wedge surface; the drilling assembly comprises a drill bit, and a communication hole is formed in the inside of the drill bit; the field geology shallow layer covered area rock sampling device has high sampling efficiency and good sampling effect, meets the sampling requirements of different field environments, is simple to operate, convenient to carry, suitable for different sampling environments, safe and stable, and convenient and efficient.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rock sampling, and particularly relates to a field geology shallow overburden area rock sampling device and a sampling method. BACKGROUND

[0002] Rock sampling in a field geology shallow overburden area is an important geological exploration work, which can help us understand the underground geological structure and mineral resource distribution, and a commonly used rock sampling device is used for sampling and detecting rock, that is, a core drilling machine is used for drilling underground, and a rock sample is taken out through a core barrel and the like, and the core sample is usually a cylindrical body, which can provide a continuous rock profile.

[0003] Chinese patent CN114216725B discloses a petroleum geological exploration rock sampling device and a sampling method thereof, and relates to the technical field of geological exploration, comprising a base, vertical U-shaped side frames are fixedly installed on both sides of one end of the top outer wall of the base, and the top ends of the two U-shaped side frames are connected with a top plate, a drilling assembly is installed on the two U-shaped side frames, and a spraying mechanism is installed on the base; the rock sampling device has low sampling efficiency and poor sampling effect.

[0004] Chinese patent CN107290175B relates to a portable field rock sampling device and method for use of a handheld drilling machine in field geological sampling. It solves the problems of poor quality and low efficiency of field core sampling. The technical scheme is that the central tube is placed into the inner cavity of the quick connection barrel, the upper adjusting shaft bearing is installed on the step surface in the middle part of the inner cavity of the quick connection barrel, the female transmission screw of the adjusting sleeve is engaged with the male transmission screw of the quick connection barrel; the rock sampling device has high operation difficulty and low operation precision.

[0005] The above rock sampling devices need to continuously drill into rock and perform a rock sampling process, so that the cutting teeth below the drill bit are continuously extruded against rock after drilling, which easily causes the temperature inside the drill bit to rise. However, the existing technology lacks real-time monitoring and adjusting functions for the temperature of the drill bit position, thereby causing the temperature of the drill bit and the cutting teeth to be too high and the structure of the drill bit to be damaged.

[0006] Meanwhile, if the hardness of the rock is too high and the downward force applied to the drill bit and the cutting teeth is not enough, the drill bit and the cutting teeth continuously rotate and slide against the rock, which not only reduces the rock sampling efficiency, but also continuously increases the temperature of the drill bit position and easily causes damage to the structure of the drill bit.

[0007] After the rock sampling is completed, the drill rod needs to be taken out upward and the rock sample needs to be detected, and the rock sample inside the drill rod is easily caused to slide downward and separate under the action of gravity, thereby reducing the accuracy and integrity of the rock sampling.

[0008] And after the rock sample is taken out along the inside of the drill rod, part of the rock impurities are easily adhered to the inner wall of the sampling cavity and the communication hole, and only the downward flow of the cooling liquid cannot thoroughly and effectively flush and clean them, thereby easily affecting the quality of the subsequent rock sampling. SUMMARY

[0009] In view of the above problems, the present application provides a rock sampling device and method for field geology shallow covering area.

[0010] To achieve the above object, the present application provides the following technical scheme: a rock sampling device for field geology shallow covering area, comprising a driving assembly, the side wall of the driving assembly is provided with an auxiliary assembly, the lower output end of the driving assembly is provided with a sampling assembly, and the lower part of the sampling assembly is provided with a drilling assembly.

[0011] The driving assembly comprises a driving shaft.

[0012] The sampling assembly comprises a drill rod, the inside of the drill rod is provided with a sampling cavity, the inner wall of the sampling cavity is uniformly provided with a plurality of side grooves, the inner wall of the side groove is rotationally connected with an elastic turning plate, and the side wall of the elastic turning plate is provided with a wedge surface.

[0013] The drilling assembly comprises a drill bit, the inside of the drill bit is provided with a communication hole, the inner wall of the communication hole is uniformly provided with a plurality of butt joints, the inner wall of the butt joint is provided with a temperature sensor, and the side wall of the butt joint is provided with a wedge block.

[0014] In the present application, the cooling liquid flows downward along the side groove to the butt joint and flushes and cools the drill bit and the cutting tooth, when the temperature value detected by the temperature sensor is greater than the first temperature preset value and less than the second temperature preset value, the elastic turning plate rotates downward and correspondingly increases the downward flow amount of the cooling liquid, when the temperature value detected by the temperature sensor is greater than the second temperature preset value and less than the maximum temperature preset value, the elastic turning plate continues to rotate downward and drives the wedge surface to be in extrusion contact with the wedge block, the wedge block drives the drill bit to rotate downward and increases the drilling force, and when the temperature value detected by the temperature sensor is greater than the maximum temperature preset value, the elastic turning plate reversely rotates upward and restores to the horizontal state, and the end part of the elastic turning plate extrudes and fixes the rock sample inside the sampling cavity; after the sampling is completed, the elastic turning plate reciprocates in the side groove, and the cooling liquid is splashed to the inner wall of the sampling cavity and the communication hole under the impact and collision of the elastic turning plate, thereby further improving the flushing and cleaning effect, avoiding the adhesion of impurities to the inner wall of the sampling cavity and the communication hole, and causing pollution to the subsequent rock sampling.

[0015] Preferably, the inner top of the side groove is provided with an electric push rod, the bottom output end of the electric push rod is provided with a moving block, the moving block is in sealing sliding connection with the inner wall of the side groove, the bottom of the moving block is provided with a scraper, the side wall of the scraper is matched with the inner wall of the side groove, and the side wall of the scraper is uniformly provided with a plurality of tooth blocks.

[0016] Preferably, the lower inner wall of the side groove is rotationally connected with a rotating shaft, one side outer surface of the rotating shaft is provided with a half-tooth ring, the half-tooth ring is in meshing connection with the tooth block, the other end of the rotating shaft is fixedly connected with the side wall of the elastic rotating plate, and the bottom of the wedge surface is in wedge-shaped matching with the top of the wedge block.

[0017] Preferably, the shaft center of the driving shaft is threadedly connected with a splice joint, the bottom inner wall of the splice joint is threadedly fixedly connected with the top outer surface of the drill rod, the bottom of the splice joint is provided with a bottom groove, and the bottom of the bottom groove is in communication with the top of the sampling cavity.

[0018] Preferably, the outer surface of the splice joint is provided with a rotary joint, one side input end of the rotary joint is communicated with a water supply pipe, the output end of the rotary joint is in communication with the inside of the bottom groove, the input end of the water supply pipe is communicated with a hose, the output end of the hose is in communication with a water supply assembly, and the upper portion of the water supply pipe is provided with a water valve.

[0019] Preferably, the top of the butt joint groove is in communication with the bottom of the side groove, the top of the communication hole is in communication with the bottom of the sampling cavity, the bottom of the drill bit is uniformly provided with a plurality of cutting teeth, the butt joint groove is matched with the cutting teeth, a sewage groove is arranged between adjacent two cutting teeth, the inside of the sewage groove is in communication with the communication hole, the bottom of the wedge block is provided with a fixing block, and the bottom of the fixing block is fixedly connected with the top of the cutting tooth.

[0020] Preferably, the top of the drill bit is uniformly provided with a plurality of limiting blocks, the bottom of the drill rod is uniformly provided with a plurality of clamping grooves, the limiting blocks and the clamping grooves are distributed in a staggered manner with the butt joint groove, the limiting blocks and the clamping grooves are in interference clamping connection, and the temperature sensor is used to detect the temperature value in the butt joint groove.

[0021] Preferably, the driving assembly further comprises a gasoline engine, the bottom output end of the gasoline engine is provided with a gearbox, the bottom output end of the gearbox is fixedly connected with the top of the driving shaft, one side of the gasoline engine is communicated with an oil tank, the upper opening of the oil tank is provided with an oil cover, one side of the gasoline engine is provided with an ignition switch, and the air inlet end of the other side of the gasoline engine is provided with an air filter element.

[0022] Preferably, one side of the gasoline engine is provided with a first handrail, the other side of the gasoline engine is provided with a second handrail, the outer surface of the end of the first handrail and the second handrail is provided with a handle, the upper side of the first handrail is provided with a controller, the lower side of the controller is provided with an adjusting gate, and the output end of the adjusting gate is provided with an electric control line.

[0023] The sampling method of the rock sampling device for field geology shallow covering area as described comprises the following steps:

[0024] S1, the driving shaft drives the drill rod and the drill bit to rotate and drill the rock, and the cooling liquid in the side groove enters the butt joint groove after being blocked by the elastic rotating plate and cools and lowers the temperature of the drill bit;

[0025] S2, when the temperature value detected by the temperature sensor is greater than the first temperature preset value and less than the second temperature preset value, the elastic rotating plate rotates downward, the blocking area of the elastic rotating plate to the side groove decreases, and the amount of cooling liquid entering the butt joint groove from the side groove increases;

[0026] S3, when the temperature value detected by the temperature sensor is greater than the second temperature preset value and less than the maximum temperature preset value, the elastic rotating plate continues to rotate downward, the wedge-shaped surface and the wedge-shaped block are wedge-shaped matched, the downward force acting on the drill bit increases, and the extrusion force of the drill bit to drill the rock increases;

[0027] S4, when the temperature value detected by the temperature sensor is greater than the maximum temperature preset value, the elastic rotating plate reversely rotates and reaches a horizontal state, the end of the elastic rotating plate is in extrusion contact with the side wall of the rock sample in the sampling cavity, and the drill rod and the drill bit are taken out upward;

[0028] S5, after the sample in the sampling cavity is taken out, the sampling cavity and the communication hole are filled with cooling liquid, the elastic rotating plate reciprocates in the side groove, the cooling liquid collides with the top of the elastic rotating plate and splashes and washes the inner wall of the sampling cavity and the communication hole.

[0029] Compared with the prior art, the present application has the following advantages:

[0030] 1、The rock sampling device for field geology shallow covering area has high sampling efficiency and good sampling effect, meets the sampling requirements of different field environments, is simple to operate, convenient to carry, suitable for different sampling environments, safe and stable, and convenient and efficient.

[0031] 2、In the sampling process, the rotation angle of the elastic rotating plate corresponds to the adjustment of the flow amount of the cooling liquid, the cooling and lowering temperature efficiency of the drill bit and the cutting teeth are adaptively adjusted, and the continuity and stability of the rock drilling of the cutting teeth are ensured.

[0032] 3、The present application, when the rock hardness is greater, the elastic rotating plate continues to rotate and correspondingly increases the downward force on the drill bit and the cutting teeth, and the amount of cooling liquid discharged by the drain groove is increased, effectively improving the drilling efficiency of the cutting teeth on the rock, and ensuring that the rock can be completely and effectively sampled and detected.

[0033] 4、The present application, when the sampling is completed, the elastic rotating plate reversely rotates and the end portion is in extrusion contact with the side wall of the rock sample in the sampling cavity, effectively avoiding the rock sample from sliding and falling downward when the drill rod and the drill bit are pulled out, and ensuring the completeness and integrity of the rock sampling.

[0034] 5、The present application, when the sampling is completed, the elastic rotating plate continuously reciprocates in the side groove, and cooperates with the downward flowing cooling liquid in the sampling cavity and the communication hole, further realizing the irregular splashing and washing effect of the cooling liquid on the inner wall of the sampling cavity and the communication hole, effectively avoiding the pollution of the impurities adhered to the inner wall of the sampling cavity and the communication hole to the quality of the subsequent rock sampling. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0036] Figure 2 is another perspective view of the three-dimensional structure of the present application;

[0037] Figure 3 is an exploded three-dimensional structure schematic diagram of the driving assembly and auxiliary assembly of the present application;

[0038] Figure 4 is Figure 2 is a schematic diagram of the internal three-dimensional structure of the sampling assembly from the front view;

[0039] Figure 5 is Figure 4 is an enlarged schematic diagram of A in the present application;

[0040] Figure 6 is Figure 4 is an enlarged schematic diagram of B in the present application;

[0041] Figure 7 is an exploded three-dimensional structure schematic diagram of the lower view part of the sampling assembly of the present application;

[0042] Figure 8 is an exploded three-dimensional structure schematic diagram of the internal part of the sampling assembly of the present application;

[0043] Figure 9 is an exploded three-dimensional structure schematic diagram of the drilling assembly of the present application.

[0044] In the figure: 1, driving assembly; 101, driving shaft; 102, gasoline engine; 103, gearbox; 104, ignition switch; 105, air filter; 106, oil tank; 107, oil cover; 2, auxiliary assembly; 201, first handrail; 202, second handrail; 203, handle; 204, electric control wire; 205, adjusting gate; 206, controller; 3, sampling assembly; 301, drill rod; 302, sampling cavity; 303, splice; 304, rotary joint; 305, water supply pipe; 306, water valve; 307, side groove; 308, electric push rod; 309, moving block; 310, scraper; 311, tooth block; 312, rotating shaft; 313, half-tooth ring; 314, elastic rotating plate; 315, wedge surface; 316, clamping groove; 317, bottom groove; 4, drilling assembly; 401, drill bit; 402, cutting tooth; 403, sewage groove; 404, limiting block; 405, butt joint groove; 406, fixed block; 407, wedge block; 408, temperature sensor; 409, communication hole. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] First embodiment

[0047] As shown in Figure 1 - Figure 9 A field geology shallow overburden rock sampling device, comprising a driving assembly 1, the side wall of the driving assembly 1 is provided with an auxiliary assembly 2, the auxiliary assembly 2 is further provided to improve the auxiliary support effect of the driving assembly 1, to ensure the stability of subsequent rock sampling, the lower output end of the driving assembly 1 is provided with a sampling assembly 3, the lower part of the sampling assembly 3 is provided with a drilling assembly 4, the driving assembly 1 is started and drives the sampling assembly 3 and the drilling assembly 4 to rotate, the drilling assembly 4 drills the rock in the field geology shallow overburden area and makes the rock sample enter the sampling assembly 3 to wait for subsequent sampling detection.

[0048] The driving assembly 1 comprises a driving shaft 101, which rotates and drives the sampling assembly 3 and the drilling assembly 4 below to rotate and drill and sample, the driving assembly 1 further comprises a gasoline engine 102, the bottom output end of the gasoline engine 102 is provided with a gearbox 103, the bottom output end of the gearbox 103 is fixedly connected with the top of the driving shaft 101, the gasoline engine 102 is started and drives the driving shaft 101 to rotate through the gearbox 103, one side of the gasoline engine 102 is communicated with an oil tank 106, an oil cover 107 is arranged at the upper opening of the oil tank 106, the oil cover 107 is opened, and mixed gasoline is poured into the oil tank 106 for subsequent power supply of the gasoline engine 102, a ignition switch 104 is arranged on one side of the gasoline engine 102, the ignition switch 104 is arranged to facilitate subsequent switching of the gasoline engine 102, and the other side of the gasoline engine 102 is an air inlet end, and an air filter 105 is arranged at the air inlet end, the air filter 105 is arranged to ensure that the gas entering the gasoline engine 102 is dust-free, so as to avoid hindering the subsequent use of the gasoline engine 102.

[0049] A first handrail 201 is arranged on one side of the gasoline engine 102, and a second handrail 202 is arranged on the other side of the gasoline engine 102, the first handrail 201 and the second handrail 202 are arranged to provide convenience and stability for the operator to sample the rock in the field geological shallow layer covering area, a handle 203 is arranged on the outer surface of the end portion of the first handrail 201 and the second handrail 202, the handle 203 is arranged to improve the drilling stability, a controller 206 is arranged above the first handrail 201, the controller 206 electrically controls various electrical elements, an adjusting gate 205 is arranged below the controller 206, the adjusting gate 205 is used to control the transmission speed of the gearbox 103, so as to adjust the rotating speed of the driving shaft 101, the sampling assembly 3 and the drilling assembly 4 below, and further ensure the stability of rock drilling, and an electric control line 204 is arranged at the output end of the adjusting gate 205, the electric control line 204 is arranged to improve the electric control effect.

[0050] The sampling assembly 3 comprises a drill rod 301, a sampling cavity 302 is formed in the inside of the drill rod 301, a rock sample enters the inside of the sampling cavity 302 for subsequent detection, a splice joint 303 is threadedly connected at the shaft center of the driving shaft 101, the bottom inner wall of the splice joint 303 is fixedly connected with the top outer surface of the drill rod 301 in a threaded mode, the splice joint 303 is arranged to further improve the transmission stability and efficiency of the driving shaft 101 and the drill rod 301, a bottom groove 317 is arranged at the bottom of the splice joint 303, the bottom of the bottom groove 317 is communicated with the top of the sampling cavity 302, so that the cooling liquid in the bottom groove 317 can enter the inside of the sampling cavity 302 downward, and the flushing and cooling effect of the rock sample in the inside of the sampling cavity 302 is further improved.

[0051] The outer surface of the splice joint 303 is provided with a rotary joint 304, one side of the rotary joint 304 is communicated with a water supply pipe 305, the output end of the rotary joint 304 is communicated with the inside of the bottom groove 317, then the cooling liquid in the inside of the water supply pipe 305 enters the inside of the bottom groove 317 along the rotary joint 304, and further enters the inside of the sampling cavity 302 downward along the bottom groove 317 to flow and wash to reduce the temperature, the input end of the water supply pipe 305 is communicated with a hose, the output end of the hose is communicated with a water supply assembly, the upper side of the water supply pipe 305 is provided with a water valve 306, after the water valve 306 is opened, the water supply assembly drives and inputs the cooling liquid into the inside of the water supply pipe 305 along the hose.

[0052] A plurality of side grooves 307 are uniformly arranged on the inner wall of the sampling cavity 302, the elastic rotating plate 314 is rotatably connected to the lower side of the inner wall of the side groove 307, the length of the elastic rotating plate 314 is greater than the depth of the side groove 307, that is, the length of the elastic rotating plate 314 close to the axis of the sampling cavity 302 is greater than the depth of the side groove 307 close to the axis of the sampling cavity 302, so that the elastic rotating plate 314 can frictionally and extrusively fix the side wall of the rock sample in the sampling cavity 302 when it is in a horizontal state, avoiding the rock sample in the sampling cavity 302 from flowing downward and discharging when the drill rod 301 is taken out, and reducing the sampling effect, the elastic rotating plate 314 rotates in the side groove 307 and further improves the downward flow amount of the cooling liquid in the side groove 307, the electric push rod 308 is arranged on the inner top of the side groove 307, the bottom output end of the electric push rod 308 is provided with a moving block 309, the moving block 309 is sealingly and slidably connected to the inner wall of the side groove 307, the electric push rod 308 is started and drives the moving block 309 to move up and down in the side groove 307, the bottom of the moving block 309 is provided with a scraper 310, the side wall of the scraper 310 matches the inner wall of the side groove 307, the moving block 309 moves up and down to correspondingly drive the scraper 310 to move up and down in the side groove 307, thereby not only adjusting the rotation angle of the elastic rotating plate 314, but also scraping and cleaning the rock impurities clamped in the side groove 307 by means of the scraper 310, avoiding affecting the subsequent rock sampling, and the length of the moving block 309 is less than the depth of the side groove 307, that is, the length of the moving block 309 close to the axis of the sampling cavity 302 is less than the length of the side groove 307 close to the axis of the sampling cavity 302, so that the moving block 309 does not completely block the side groove 307, when the rock sample in the sampling cavity 302 reaches the moving block 309, the moving block 309 does not block the side groove 307 when it moves up and down, and the cooling liquid in the sampling cavity 302 can still flow downward in the side groove 307 to cool and reduce the temperature, and the height of the rock sample is not easy to reach the height of the moving block 309 when the rock is actually sampled, which further improves the stability and efficiency of the cooling liquid flowing in the side groove 307.

[0053] The side wall of the scraper 310 is uniformly provided with a plurality of tooth blocks 311, and the scraper 310 moves up and down to drive the tooth blocks 311 to move up and down. The lower inner wall of the side groove 307 is rotationally connected with a rotating shaft 312, one side outer surface of the rotating shaft 312 is provided with a half-tooth ring 313, the half-tooth ring 313 is meshed with the tooth blocks 311, and the tooth blocks 311 move up and down to drive the rotating shaft 312 to rotate through the meshing of the half-tooth ring 313. The other end of the rotating shaft 312 is fixedly connected with the side wall of the elastic rotating plate 314, the rotating shaft 312 drives the elastic rotating plate 314 to rotate inside the side groove 307, and cooperates with the rock sample in the sampling cavity 302 to block the end of the side groove 307, further adjusts the flow amount of the cooling liquid in the side groove 307, not only realizes the cooling of the top of the drilling assembly 4, but also ensures the flushing and cleaning effect of the inner wall of the sampling cavity 302, and avoids affecting the subsequent rock sampling.

[0054] The drilling assembly 4 comprises a drill bit 401, the drill bit 401 is located below the drill rod 301, the inside of the drill bit 401 is provided with a communication hole 409, the top of the communication hole 409 is communicated with the bottom of the sampling cavity 302, so that the rock sample in the communication hole 409 enters the sampling cavity 302 for temporary storage, the bottom of the drill bit 401 is uniformly provided with a plurality of cutting teeth 402, the drill rod 301 rotates to drive the drill bit 401 to rotate, the drill bit 401 rotates to drive the plurality of cutting teeth 402 to rotate, the plurality of cutting teeth 402 are extruded and cut with the rock in the field geological shallow layer covering area and drill and sample the rock, so that the rock sample enters the communication hole 409 and is further upwardly collected in the sampling cavity 302.

[0055] The inner wall of the communication hole 409 is uniformly provided with a plurality of butt joints 405, the inner wall of the butt joint 405 is provided with a temperature sensor 408, the temperature sensor 408 is used to detect the temperature value in the butt joint 405. The setting of the butt joint 405 not only realizes the cooling of the top of the cutting tooth 402, but also correspondingly increases the downward pressure applied to the cutting tooth 402 when the rock hardness is too high and the temperature of the cutting tooth 402 is too high, so as to ensure the drilling effect of the cutting tooth 402 on the rock.

[0056] The top of the docking groove 405 is in communication with the bottom of the side groove 307, so that the cooling liquid in the side groove 307 flows into the docking groove 405, the docking groove 405 matches the cutting tooth 402, and the cooling liquid can efficiently cool the cutting tooth 402 below, so that the temperature of the cutting tooth 402 is always in the best state. The pollution discharge groove 403 is arranged between the two adjacent cutting teeth 402, and the inside of the pollution discharge groove 403 is in communication with the communication hole 409, so that the cooling liquid in the docking groove 405 moves to both sides and is finally discharged along the pollution discharge groove 403, thereby not only improving the cooling and cooling effect of the cooling liquid on the cutting tooth 402, but also timely flushing out the rock impurities in the sampling cavity 302 and the communication hole 409, avoiding the reduction of the quality of the subsequent rock sampling.

[0057] The side wall of the docking groove 405 is provided with a wedge block 407, the bottom of the wedge block 407 is provided with a fixed block 406, the bottom of the fixed block 406 is fixedly connected with the top of the cutting tooth 402, and the wedge block 407 is synchronously adjusted by the fixed block 406 when the drilling force of the drill bit 401 on the rock below is adjusted. The side wall of the elastic rotating plate 314 is provided with a wedge surface 315, the bottom of the wedge surface 315 is wedge-shaped matched with the top of the wedge block 407, so that when the elastic rotating plate 314 is rotated downward by too large an angle, the bottom of the wedge surface 315 and the top of the wedge block 407 are wedge-shaped extruded and contacted with each other, and the wedge block 407 increases the downward force of the drill bit 401 through the fixed block 406, thereby further improving the drilling force of the drill bit 401 on the rock and ensuring the rock sampling efficiency.

[0058] The top of the drill bit 401 is uniformly provided with a plurality of limiting blocks 404, the bottom of the drill rod 301 is uniformly provided with a plurality of clamping grooves 316, the limiting blocks 404 and the clamping grooves 316 are distributed in a staggered manner with the docking groove 405, the limiting blocks 404 and the clamping grooves 316 are in interference clamping fit, so that the connection stability and transmission efficiency of the drill bit 401 and the drill rod 301 are ensured by the mutual clamping of the limiting blocks 404 and the clamping grooves 316, that is, when the drill rod 301 rotates, the drill bit 401 is correspondingly driven to rotate, and when the wedge surface 315 of the elastic rotating plate 314 and the wedge block 407 are wedge-shaped extruded and contacted with each other, the wedge block 407 increases the extrusion force of the drill bit 401 on the rock below through the fixed block 406, thereby further improving the cutting and drilling effect of the cutting tooth 402 below the drill bit 401 on the rock.

[0059] When the drill rod 301 and the drill bit 401 continue to drill into the rock and take rock samples, the cutting teeth 402 below the drill bit 401 continue to press and drill into the rock, causing the temperature to rise. The prior art lacks real-time monitoring and adjustment functions for the temperature at the position of the drill bit 401, thereby causing the drill bit 401 and the cutting teeth 402 to be damaged due to excessive temperature. At the same time, if the rock hardness is too high and the downward force applied to the drill bit 401 and the cutting teeth 402 is not enough, the drill bit 401 and the cutting teeth 402 continue to rotate and slip against the rock, which not only reduces the efficiency of rock sampling, but also causes the temperature at the position of the drill bit 401 to continue to rise and easily damage the structure of the drill bit 401. During the sampling process and after the sampling is completed, the drill rod 301 needs to be pulled out upward and the rock sample needs to be detected. The rock sample inside the drill rod 301 is easily pulled out downward under the action of gravity, thereby reducing the accuracy and integrity of the rock sampling. After the rock sample is taken out along the inside of the drill rod 301, part of the rock impurities are easily adhered to the inner wall of the sampling cavity 302 and the communication hole 409. The downward flow of the cooling liquid cannot thoroughly and effectively flush and clean them, thereby easily affecting the quality of subsequent rock sampling.

[0060] To solve the above problems, the field geological shallow overburden rock sampling equipment in actual use first carries each component to the sampling position and splices each component according to the requirements. At this time, the water supply pipe 305 is connected in communication with the hose of the water supply assembly, and the drill rod 301 is threadedly fixed above the splice joint 303 and below the splice joint 303. The plurality of limiting blocks 404 above the drill bit 401 are inserted into the inside of the butt joint groove 405, and the plurality of butt joint grooves 405 and the side groove 307 are in communication. The lower side of the scraper 310 is inserted into the inside of the butt joint groove 405, and the bottom groove 317 and the sampling cavity 302 are in communication, thereby waiting for the subsequent sampling process.

[0061] The operator opens the oil cover 107 and pours mixed gasoline into the oil tank 106. Then, the operator holds the handle 203 at the end of the first handrail 201 and the second handrail 202, and presses the cutting teeth 402 below the drill bit 401 against the sampling position. The operator turns on the ignition switch 104, and the gasoline engine 102 starts to drive the drill rod 301 and the drill bit 401 to rotate through the gearbox 103. At the same time, the operator turns on the water valve 306, and the water supply assembly starts to pass the cooling liquid into the inside of the water supply pipe 305 through the hose. The cooling liquid is mostly outdoor water. The cooling liquid continues to flow into the bottom groove 317 through the water supply pipe 305 and the rotary joint 304, and flows downward into the inside of the sampling cavity 302 and the communication hole 409 through the bottom groove 317.

[0062] Meanwhile, the controller 206 controls the electric push rod 308 to start and the output end to shorten, the output end of the electric push rod 308 at the bottom drives the scraper 310 to move upwards by a certain distance through the moving block 309, the scraper 310 drives a plurality of tooth blocks 311 to move upwards, the tooth blocks 311 and the half-tooth ring 313 are mutually engaged and drive the rotating shaft 312 to rotate, the rotating shaft 312 drives the elastic rotating plate 314 to rotate downwards, the elastic rotating plate 314 no longer blocks the side groove 307, and the cooling liquid flows downwards along the side groove 307 and enters the inside of the docking groove 405, and finally is discharged along a plurality of blowdown grooves 403, so as to not only realize the effect of washing and cleaning the outer surface of the rock, but also can quickly cool the cutting teeth 402 at the fixed point, and ensure that the cutting temperature of the cutting teeth 402 is kept stable at all times.

[0063] Meanwhile, when the drill rod 301 drives the drill bit 401 to rotate, the drill bit 401 drives a plurality of cutting teeth 402 to rotate synchronously to drill the rock, and the rock sample continuously enters the inside of the sampling cavity 302 upwards along the communication hole 409, and the temperature value detected by the temperature sensor 408 reaches the first temperature preset value.

[0064] Afterwards, when the cutting teeth 402 and the rock continuously rotate and rub to generate heat, the temperature of the cutting teeth 402 and the drill bit 401 continuously rises, the temperature value detected by the temperature sensor 408 rises and is greater than the first temperature preset value and less than the second temperature preset value, the second temperature preset value is greater than the first temperature preset value, in order to improve the cooling effect of the drill bit 401 and the cutting teeth 402, the controller 206 controls the electric push rod 308 to start and the output end to shorten, the output end of the electric push rod 308 drives the scraper 310 to move upwards along the side groove 307 through the moving block 309, the scraper 310 drives a plurality of tooth blocks 311 to move upwards, the tooth blocks 311 and the half-tooth ring 313 are mutually engaged and drive the rotating shaft 312 to rotate, the rotating shaft 312 drives the elastic rotating plate 314 at the other end to rotate downwards, the blocking area of the elastic rotating plate 314 to the side groove 307 is reduced, the flow of the cooling liquid in the side groove 307 downwards to the inside of the docking groove 405 is increased, and finally the amount of the cooling liquid discharged along the blowdown groove 403 is increased, the cooling effect of the cooling liquid on the drill bit 401 and the cutting teeth 402 is improved, and the drilling temperature of the drill bit 401 and the cutting teeth 402 is kept stable and safe at all times.

[0065] When the hardness of the rock is too large, and the downward force applied to the drill bit 401 and the cutting teeth 402 by the operator through the drill rod 301 cannot meet the drilling requirements, the cutting teeth 402 continuously drill and rub against the hard rock and generate heat, the temperature value detected by the temperature sensor 408 reaches the second temperature preset value and is less than the maximum temperature preset value, and the maximum temperature preset value is greater than the second temperature preset value, indicating that not only the cooling and temperature reduction effect of the drill bit 401 and the cutting teeth 402 needs to be improved, but also the downward pressure on the drill bit 401 and the cutting teeth 402 needs to be increased correspondingly, so as to improve the drilling effect of the cutting teeth 402 on the hard rock.

[0066] The controller 206 controls the electric push rod 308 to start and the output end to continue to shorten, the output end of the electric push rod 308 drives the scraper 310 to move upward along the side groove 307 through the moving block 309, the scraper 310 drives the plurality of tooth blocks 311 to move upward synchronously, the tooth blocks 311 are in meshing with each other and the rotating shaft 312 and drive the rotating shaft 312 to rotate, the rotating shaft 312 drives the elastic rotating plate 314 to rotate downward and continuously reach the vertical state, the blocking area of the elastic rotating plate 314 to the side groove 307 reaches the minimum value, the flow of the cooling liquid in the side groove 307 downward to the docking groove 405 reaches the maximum value, the cooling efficiency of the cooling liquid in the docking groove 405 to the drill bit 401 and the cutting teeth 402 reaches the maximum value, and finally the amount of the cooling liquid discharged along the sewage groove 403 reaches the maximum value, and the scouring and softening effect of the cooling liquid to the rock reaches the maximum value, further improving the drilling efficiency and effect on the hard rock.

[0067] Meanwhile, the elastic rotating plate 314 rotates downward and drives the wedge surface 315 to rotate synchronously, the wedge surface 315 is in extrusion contact with the top of the wedge block 407 and applies a downward force to the wedge block 407, the wedge block 407 applies a downward force to the drill bit 401 synchronously through the fixed block 406, the drill bit 401 applies a downward force to the cutting teeth 402, the extrusion and cutting force of the cutting teeth 402 to the hard rock increases, and the amount of the cooling liquid discharged through the sewage groove 403 increases, further improving the cutting and crushing effect of the cutting teeth 402 to the hard rock, and ensuring the sampling effect of the rock sample.

[0068] Meanwhile, when the elastic rotating plate 314 rotates in the side groove 307, the flow rate of the cooling liquid in the side groove 307 and the docking groove 405 changes correspondingly, the impurity scouring and cleaning effect of the rock outer surface is further improved when the cooling liquid flows in pulses, thereby ensuring the cleanliness and stability of the rock sample, and the upward and downward movement of the scraper 310 in the side groove 307 correspondingly realizes the scraping and cleaning effect of the inner walls of the side groove 307 and the docking groove 405, avoiding the adhesion of rock impurities to the inner walls of the side groove 307 or the docking groove 405 and affecting the flow of the cooling liquid and the subsequent rock sampling effect.

[0069] If the amount of rock sample inside the sampling cavity 302 reaches the maximum value or the hardness of the rock is too large, the cutting teeth 402 continuously drill into the rock and the temperature value further increases, and when the temperature value detected by the temperature sensor 408 reaches the maximum temperature preset value, the drill rod 301 and the drill bit 401 need to be removed, and the controller 206 controls the electric push rod 308 to start and the output end to extend, the output end of the electric push rod 308 drives the scraper 310 to move downward to the maximum distance along the side groove 307 through the moving block 309, the scraper 310 drives the plurality of tooth blocks 311 to move downward to the maximum distance, the tooth blocks 311 and the half-tooth ring 313 are engaged and drive the rotating shaft 312 to rotate in the opposite direction to the maximum angle, the rotating shaft 312 drives the elastic rotating plate 314 to rotate upward to the horizontal state, the cooling liquid inside the side groove 307 is blocked by the elastic rotating plate 314 and no longer flows downward, and at the same time the water supply assembly is closed and the drill rod 301 and the drill bit 401 are removed upward.

[0070] Because the end of the elastic rotating plate 314 is in elastic extrusion contact with the side wall of the rock sample inside the sampling cavity 302, under the action of the friction force and the extrusion force at the end of the elastic rotating plate 314, the rock sample inside the sampling cavity 302 will not fall downward, and during the upward removal of the drill rod 301 and the drill bit 401, the rock inside the sampling cavity 302 can stably move upward with the drill rod 301 and be pulled out, further avoiding the risk of the rock sample sliding upward along the sampling cavity 302 and falling during the upward removal of the drill rod 301, and improving the accuracy and completeness of the sampling.

[0071] After the drill rod 301 and the drill bit 401 are removed, the controller 206 controls the electric push rod 308 to start and the output end to shorten, the output end of the electric push rod 308 drives the scraper 310 and the plurality of tooth blocks 311 to move downward through the moving block 309, the tooth blocks 311 engage with the half-tooth ring 313 to drive the rotating shaft 312 and the elastic rotating plate 314 to rotate downward, and the end of the elastic rotating plate 314 is disengaged from the extrusion fixing effect on the rock sample inside the sampling cavity 302. At this time, knock the outer surface of the drill rod 301, and the rock sample inside the sampling cavity 302 continuously passes through the communication hole 409 and is removed downward, thereby completing the rock sampling process, with high sampling efficiency, good sampling effect, high operation precision, and good operation stability.

[0072] After the rock sample is completely removed, the drill rod 301 and the drill bit 401 are moved to a suitable position, the controller 206 controls the water supply assembly to be opened, and the bottom groove 317 continues to introduce cooling liquid into the sampling cavity 302, and the cooling liquid continues to flow downward to the inside of the communication hole 409 and the docking groove 405 after passing through the sampling cavity 302 and the internal side groove 307, further realizing the flushing and cleaning effect of the inner wall of the sampling cavity 302 and the communication hole 409, and avoiding pollution to the subsequent rock sample sampling.

[0073] Meanwhile, the controller 206 controls the electric push rod 308 to start and the output end to continuously extend and shorten, the output end of the electric push rod 308 drives the scraper 310 and the plurality of tooth blocks 311 to continuously move up and down along the side groove 307 through the moving block 309, the tooth blocks 311 are in mesh with the half-tooth ring 313 and drive the rotating shaft 312 and the elastic rotating plate 314 to continuously reciprocate, and the cooling liquid flowing in the side groove 307 is continuously splashed to the inner wall of the sampling cavity 302 and the communication hole 409 under the changing blocking effect of the elastic rotating plate 314, so that the irregular flushing and cleaning effect of the sampling cavity 302 and the communication hole 409 is further realized, and the rock impurities attached to the inner wall of the sampling cavity 302 and the communication hole 409 are prevented from causing pollution to subsequent rock sampling.

[0074] After the cleaning is completed, the drill rod 301 and the drill bit 401 are moved to a subsequent sampling position, and the above process is repeated to sample the subsequent rock.

[0075] The field geological shallow covering area rock sampling equipment has high sampling efficiency and good sampling effect, meets the sampling needs of different field environments, is simple to operate, convenient to carry, suitable for different sampling environments, safe and stable, convenient and efficient; meanwhile, the flow amount of the cooling liquid is adjusted according to the rotation angle of the elastic rotating plate 314 in the sampling process, the cooling and temperature reduction efficiency of the drill bit 401 and the cutting tooth 402 is adaptively adjusted, the persistence and stability of the rock drilling of the cutting tooth 402 are ensured; and when the rock hardness is large, the elastic rotating plate 314 continues to rotate and correspondingly increases the downward force on the drill bit 401 and the cutting tooth 402, and the amount of the cooling liquid discharged by the sewage tank 403 is increased, so that the rock drilling efficiency of the cutting tooth 402 is effectively improved, and the rock can be completely and effectively sampled and detected; after the sampling is completed, the elastic rotating plate 314 reversely rotates and the end portion is in extrusion contact with the rock sample side wall in the sampling cavity 302, so that the rock sample is effectively prevented from sliding and falling downward when the drill rod 301 and the drill bit 401 are pulled out, and the completeness and integrity of the rock sampling are ensured; after the sampling is completed, the elastic rotating plate 314 continuously reciprocates in the side groove 307, and the downward flowing cooling liquid in the sampling cavity 302 and the communication hole 409 is further used to realize the irregular splashing and flushing cleaning effect of the cooling liquid on the inner wall of the sampling cavity 302 and the communication hole 409, so that the impurities adhered to the inner wall of the sampling cavity 302 and the communication hole 409 are effectively prevented from causing pollution to the quality of subsequent rock sampling.

[0076] Second embodiment

[0077] The sampling method of the field geological shallow covering area rock sampling equipment as described above comprises the following steps:

[0078] S1, the driving shaft 101 drives the drill pipe 301 and the drill bit 401 to rotate and drill the rock, and the cooling liquid in the side groove 307 enters the docking groove 405 after being blocked by the elastic rotating plate 314 and cools the drill bit 401.

[0079] S2, when the temperature value detected by the temperature sensor 408 is greater than the first temperature preset value and less than the second temperature preset value, the elastic rotating plate 314 rotates downward, the blocking area of the elastic rotating plate 314 to the side groove 307 decreases, and the amount of cooling liquid in the side groove 307 entering the docking groove 405 increases.

[0080] S3, when the temperature value detected by the temperature sensor 408 is greater than the second temperature preset value and less than the maximum temperature preset value, the elastic rotating plate 314 continues to rotate downward, the wedge surface 315 is wedge-shaped with the wedge block 407, the downward force on the drill bit 401 increases, and the extrusion force of the drill bit 401 on the rock increases.

[0081] S4, when the temperature value detected by the temperature sensor 408 is greater than the maximum temperature preset value, the elastic rotating plate 314 reverses and reaches the horizontal state, the end of the elastic rotating plate 314 is in extrusion contact with the side wall of the rock sample in the sampling cavity 302, and the drill pipe 301 and the drill bit 401 are taken out upward.

[0082] S5, after the sample in the sampling cavity 302 is taken out, the sampling cavity 302 and the communication hole 409 are filled with cooling liquid, the elastic rotating plate 314 reciprocates in the side groove 307, the cooling liquid collides with the top of the elastic rotating plate 314 and splashes and washes the inner wall of the sampling cavity 302 and the communication hole 409.

[0083] It should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0084] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A field geology shallow overburden zone rock sampling device, characterized by, Including driving assembly (1), the side wall of driving assembly (1) is equipped with auxiliary assembly (2), the lower output of driving assembly (1) is equipped with sampling assembly (3), the lower of sampling assembly (3) is equipped with drilling assembly (4); The driving assembly (1) includes a driving shaft (101); The sampling assembly (3) includes a drill pipe (301), a sampling cavity (302) is opened in the inside of the drill pipe (301), a plurality of side slots (307) are uniformly opened in the inner wall of the sampling cavity (302), a elastic rotating plate (314) is rotatably connected to the lower inner wall of the side slot (307), and a wedge surface (315) is arranged on the side wall of the elastic rotating plate (314); The drilling assembly (4) includes a drill bit (401), a communication hole (409) is opened in the inside of the drill bit (401), a plurality of butt grooves (405) are uniformly arranged on the inner wall of the communication hole (409), a temperature sensor (408) is arranged on the inner wall of the butt groove (405), and a wedge block (407) is arranged on the side wall of the butt groove (405); The inner top of the side slot (307) is provided with an electric push rod (308), the bottom output end of the electric push rod (308) is provided with a moving block (309), the moving block (309) is in sealing sliding connection with the inner wall of the side slot (307), the bottom of the moving block (309) is provided with a scraper (310), the side wall of the scraper (310) is matched with the inner wall of the side slot (307), and a plurality of tooth blocks (311) are uniformly arranged on the side wall of the scraper (310); The lower inner wall of the side slot (307) is rotatably connected with a rotating shaft (312), one side outer surface of the rotating shaft (312) is provided with a half-tooth ring (313), the half-tooth ring (313) is in meshing connection with the tooth blocks (311), the other end of the rotating shaft (312) is fixedly connected with the side wall of the elastic rotating plate (314), and the bottom of the wedge surface (315) is wedge-shaped matched with the top of the wedge block (407); The top of the butt groove (405) is communicated with the bottom of the side slot (307), the top of the communication hole (409) is communicated with the bottom of the sampling cavity (302), a plurality of cutting teeth (402) are uniformly arranged on the bottom of the drill bit (401), the butt groove (405) is matched with the cutting teeth (402), a sewage groove (403) is arranged between adjacent two cutting teeth (402), the inner side of the sewage groove (403) is communicated with the communication hole (409), the bottom of the wedge block (407) is provided with a fixed block (406), and the bottom of the fixed block (406) is fixedly connected with the top of the cutting teeth (402); When the temperature value detected by the temperature sensor (408) is increased and greater than the first temperature preset value and less than the second temperature preset value, the electric push rod (308) is started and the output end is shortened, the blocking area of the elastic rotating plate (314) to the side slot (307) is reduced, the flow of the cooling liquid in the side slot (307) to the inside of the butt groove (405) is increased, and the amount of the cooling liquid discharged along the sewage groove (403) is increased; When the temperature value detected by the temperature sensor (408) reaches the second temperature preset value and is less than the maximum temperature preset value, the output end of the electric push rod (308) drives the scraper (310) to move upward along the side groove (307) through the moving block (309), the drill bit (401) exerts a downward force on the cutting tooth (402), and the extrusion cutting force of the cutting tooth (402) on the harder rock increases; When the temperature value detected by the temperature sensor (408) reaches the maximum temperature preset value, the electric push rod (308) is started and the output end is elongated, the rotating shaft (312) drives the elastic rotating plate (314) to rotate upward to a horizontal state, the cooling liquid in the side groove (307) is blocked by the elastic rotating plate (314) and no longer flows downward, and under the action of the friction force and the extrusion force at the end of the elastic rotating plate (314), the rock sample in the sampling cavity (302) does not fall downward.

2. The field geology near-surface overburden rock sampling device of claim 1, wherein, A splice joint (303) is threadedly connected to the shaft center of the drive shaft (101), the inner wall of the bottom of the splice joint (303) is threadedly fixedly connected with the top outer surface of the drill rod (301), and the bottom of the splice joint (303) is provided with a bottom groove (317) which is in communication with the top of the sampling cavity (302).

3. The field geology shallow overburden rock sampling device of claim 2, wherein, The outer surface of the splice joint (303) is provided with a rotary joint (304), one side of the rotary joint (304) is in communication with a water supply pipe (305), the output end of the rotary joint (304) is in communication with the inside of the bottom groove (317), the input end of the water supply pipe (305) is in communication with a hose, the output end of the hose is in communication with a water supply assembly, and the upper portion of the water supply pipe (305) is provided with a water valve (306).

4. The field geology near-surface overburden rock sampling device of claim 1, wherein, The top of the drill bit (401) is uniformly provided with a plurality of limiting blocks (404), the bottom of the drill rod (301) is uniformly provided with a plurality of clamping grooves (316), the limiting blocks (404) and the clamping grooves (316) are distributed in a staggered manner with the butt joint groove (405), the limiting blocks (404) and the clamping grooves (316) are in interference clamping fit, and the temperature sensor (408) is used to detect the temperature value in the butt joint groove (405).

5. The field geology near-surface overburden rock sampling device of claim 1, wherein, The drive assembly (1) further comprises a gasoline engine (102), the bottom output end of the gasoline engine (102) is provided with a gearbox (103), the bottom output end of the gearbox (103) is fixedly connected with the top of the drive shaft (101), one side of the gasoline engine (102) is in communication with an oil tank (106), the upper portion of the oil tank (106) is provided with an oil cover (107), one side of the gasoline engine (102) is provided with an ignition switch (104), and the air inlet end of the other side of the gasoline engine (102) is provided with an air filter element (105).

6. The field geology shallow overburden rock sampling device of claim 5, wherein, One side of the gasoline engine (102) is provided with a first handrail (201), the other side of the gasoline engine (102) is provided with a second handrail (202), the outer surface of the end of the first handrail (201) and the second handrail (202) is provided with a handle (203), the upper of the first handrail (201) is provided with a controller (206), the lower of the controller (206) is provided with an adjusting gate (205), the output end of the adjusting gate (205) is provided with an electric control line (204).

7. The method of sampling of claim 1, wherein, It comprises the following steps: S1, the driving shaft (101) drives the drill rod (301) and the drill bit (401) to rotate and drill the rock, the cooling liquid in the side groove (307) enters the butt joint groove (405) after being blocked by the elastic rotating plate (314) and cools the drill bit (401); S2, when the temperature value detected by the temperature sensor (408) is greater than the first temperature preset value and less than the second temperature preset value, the elastic rotating plate (314) rotates downward, the blocking area of the elastic rotating plate (314) to the side groove (307) decreases, and the amount of cooling liquid entering the butt joint groove (405) from the side groove (307) increases; S3, when the temperature value detected by the temperature sensor (408) is greater than the second temperature preset value and less than the maximum temperature preset value, the elastic rotating plate (314) continues to rotate downward, the wedge surface (315) is wedge-shaped matched with the wedge block (407), the downward force acting on the drill bit (401) increases, and the extrusion force of the drill bit (401) drilling the rock downward increases; S4, when the temperature value detected by the temperature sensor (408) is greater than the maximum temperature preset value, the elastic rotating plate (314) rotates reversely and reaches the horizontal state, the end of the elastic rotating plate (314) is in extrusion contact with the side wall of the rock sample in the sampling cavity (302), and the drill rod (301) and the drill bit (401) are taken out upward; S5, after the sample in the sampling cavity (302) is taken out, the sampling cavity (302) and the communication hole (409) are filled with cooling liquid, the elastic rotating plate (314) reciprocates in the side groove (307), the cooling liquid collides with the top of the elastic rotating plate (314) and splashes and washes the inner wall of the sampling cavity (302) and the communication hole (409).

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