A sandstone drilling sampling device for hydrogeological exploration

Abstract

The present invention belongs to the technical field of hydrological exploration, and specifically relates to a sandstone drilling sampling device for hydrogeological exploration, including an annular shell, a connecting plate installed at the bottom of the annular shell, a fixed shell arranged at the bottom of the connecting plate, a positioning mechanism arranged on the fixed shell, and a sampling mechanism arranged between the annular shell and the fixed shell. The present invention uses the teeth on the sliding frame to cooperate with the spur rack to complete the positioning of the fixed rod, uses the sampling tube to move downward and rotate to drill and sample the rock, uses the impeller to rotate to offset the vertical force generated during the drilling sampling, uses the fixed rod to offset the lateral force generated during the drilling, and uses the cutting knife to rotate to cut and limit the connection between the sampling body and the rock, so as to facilitate the removal of the rock sampled by drilling, and uses the fixed rod to position, so as to avoid the water flow impacting the sampling tube to cause deflection, which will cause a large error to the subsequent research results and make the inferred data inaccurate.

Description

Technical Field

[0001] The invention relates to the technical field of hydrological exploration, and in particular to a gravel rock drilling sampling device for hydrogeological exploration. Background Art

[0002] With the exploitation of oil, natural gas and solid mineral resources on land, their reserves are gradually decreasing. In order to increase the reserves and use of resources, useful mineral deposits will be sought in the ocean. In this process, it is necessary to study the geological structure and evolution of the seabed, find out the distribution of sediments from various geological ages, and search for oil, natural gas and solid mineral resources.

[0003] The following problems exist when drilling and sampling rocks on the bottom of the ocean. The first is that the flow of seawater will impact the drill rod, causing the drilling direction of the drill rod to deviate, which will cause inaccurate rock detection results and large errors in research results. The second is that when drilling rocks on the bottom of the water, lateral and vertical forces will be generated, which will cause deviations in the drilling direction of the drill rod. In this case, the drilling direction needs to be readjusted, which will increase the efficiency and time of drilling. The third is that after the underwater rock is drilled, the drilled sample is connected to the underwater rock. Since there is no cutoff and no sample limit, it is easy to cause the sample to slip when it is taken out, making it impossible to take out the drilled sample. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a gravel rock drilling sampling device for hydrogeological exploration.

[0005] The objective of the present invention is achieved through the following technical measures: a gravel rock drilling sampling device for hydrogeological exploration, comprising an annular shell, a hanging ring is arranged on the top of the annular shell, a connecting plate is installed on the bottom of the annular shell, a fixed shell is arranged on the bottom of the connecting plate, a positioning mechanism is arranged on the fixed shell, the positioning mechanism is used to fix the sampling position, a sampling mechanism is arranged between the annular shell and the fixed shell, the sampling mechanism is used to drill underwater rocks, the positioning mechanism and the sampling mechanism cooperate to fix the sampling position, and perform drilling sampling to prevent the sampling position from being deviated due to water flow impact.

[0006] Further explanation: a plurality of fan-shaped through grooves are provided on the annular shell and the connecting plate, and the plurality of fan-shaped through grooves are evenly and equidistantly distributed in the circumferential direction to reduce water resistance.

[0007] Further explanation, the positioning mechanism includes a notched cylinder, and there are several notched cylinders, and the several notched cylinders are installed inside the fixed shell, and the several notched cylinders are evenly and equidistantly distributed in the circumference, and each notched cylinder is provided with a fixing rod, and the lower end of each fixing rod passes through the fixed shell and is slidingly and sealingly connected to the fixed shell, and the lower end of each fixing rod is set as a conical block, and the upper part of each fixing rod is embedded with a straight rack, and the several straight racks are respectively slidably set at the notches of the several notched cylinders, and an inner shell body is installed at the bottom of the fixed shell, and an internal thread is opened inside the inner shell body, and the top of the inner shell body is fixedly connected to the lower side of the connecting disk, and a limiting sleeve is slidably provided on the outer side of the inner shell body, and a plurality of tension springs are fixedly connected between the limiting sleeve and the connecting disk, and a plurality of groups of clamping components are provided at the bottom of the fixed shell, and the clamping components are used to fix and limit the fixing rod.

[0008] Further explanation, the positioning assembly includes a limit plate, two limit plates are provided, and the two limit plates are installed at the bottom of the fixed shell. A sliding frame is slidably provided between the two limit plates, and teeth are provided on the left part of the sliding frame. The teeth on the sliding frame are respectively limited and matched with adjacent straight racks. A plurality of wedge-shaped grooves are provided at the bottom of the limit sleeve, and the plurality of wedge-shaped grooves are evenly and equidistantly distributed circumferentially. The sliding frame is slidably arranged in adjacent wedge-shaped grooves on the limit sleeve. A return spring is fixedly connected between the sliding frame and the inner shell, and a connecting frame is installed at the bottom of the fixed shell, and the connecting frame is located in front of the limit plate. On the other hand, a swing rod is rotatably installed on the upper part of the connecting frame through a rotating rod, a plurality of limiting grooves are circumferentially opened on the outer side surface of the limiting sleeve, and the inner parts of the plurality of swing rods are respectively slidably arranged in the adjacent limiting grooves on the limiting sleeve, and the rotating rods on both sides of the swing rod are sleeved with torsion springs, and the two ends of the torsion springs are respectively fixed to the swing rod and the connecting frame, and a mounting frame is installed at the bottom of the fixed shell, and the mounting frame is located on the left side of the connecting frame, and a spur gear is rotatably installed on the upper part of the mounting frame, and the spur gear is meshed with the adjacent spur rack, and a contact block is installed on the spur gear, and the contact block contacts and cooperates with the swing rod.

[0009] It is further explained that the contact block is in the form of a half-notched cone, and the shape of the contact block is set to gradually change in the counterclockwise direction, so as to push the swing rod to swing.

[0010] Further explanation, the sampling mechanism includes an impeller, and a plurality of impellers are provided. The plurality of impellers are rotatably arranged on the upper part of the annular housing through a shaft rod, and the shaft rods of the plurality of impellers are connected through a pulley and a belt drive. An electric hydraulic push rod is installed on the top of the annular housing, and a driving member is installed on the upper part of the annular housing. The driving member is located on the left side of the electric hydraulic push rod, and the output shaft of the driving member is connected to the shaft rod of the adjacent impeller through a pulley and a belt drive. A driving gear is installed on the output shaft of the driving member, and a spline is rotatably installed on the telescopic end of the electric hydraulic push rod through a connecting member. Rod, a fixing frame is installed on the upper side of the connecting plate, a circular through hole is opened in the middle of the fixing frame, the circular through hole of the fixing frame is sleeved on the outside of the spline rod with a gap, a driven gear is rotatably installed on the fixing frame, the driven gear is meshed with the driving gear, the driven gear and the spline rod are matched through splines, a sampling assembly is provided in the inner shell body, the sampling assembly passes through the fixing shell and is sealed and slidably connected with the fixing shell, the sampling assembly is limitedly matched with the inner shell body, the sampling assembly is used for underwater rock drilling sampling, a drilling assembly is provided at the lower part of the spline rod, and the drilling assembly is used for underwater rock drilling and cutting.

[0011] Further explanation, the sampling assembly includes a hollow shell, a plurality of hollow shells are provided, and the plurality of hollow shells are arranged in the inner shell body and threadedly matched with the inner shell body, a hollow shaft is fixedly connected to the inner side surface of the plurality of hollow shells, a plurality of water guide holes are provided at the lower part of the hollow shaft, and the plurality of water guide holes are evenly and equidistantly distributed circumferentially, a filter screen is installed at the upper part of the water guide holes on the hollow shaft, a sampling tube is installed at the lower part of the hollow shaft, a plurality of cavities are provided on the sampling tube, and the plurality of cavities are evenly and equidistantly distributed circumferentially, a limit rod is rotatably installed in each hollow shell, and a rectangular shaped ... A slot is provided in the middle of the limit rod, a straight hole is provided horizontally, the rectangular slot on the limit rod is connected with the straight hole, a sliding rod is slidably provided at the lower part of each hollow shell, the upper end of the sliding rod passes through the rectangular slot of the limit rod, a pin rod is fixedly connected to the upper part of the sliding rod, the pin rod on the sliding rod is slidably set in the straight hole of the adjacent limit rod, a spring is fixedly connected between the upper end of the sliding rod and the adjacent hollow shell, the inner ends of several limit rods pass through the hollow shaft and are slidably connected thereto, the circumferential wall of the spline rod is provided with several limit grooves, and the inner ends of several limit rods are respectively slidably set in the adjacent limit grooves.

[0012] Further explanation: the water guide hole on the hollow shaft is F-shaped, and the water guide hole on the hollow shaft is connected with the adjacent cavity on the sampling tube, so as to reduce the friction of the sampling tube by water flow.

[0013] To further explain, the drilling assembly includes a drill rod, which is connected to the lower end of the spline rod, and the circumferential wall of the drill rod is provided with a threaded groove for discharging materials. A drill bit is installed at the lower end of the drill rod, and two symmetrical receiving grooves are provided at the lower part of the drill bit. A cutting knife is rotatably installed in the two receiving grooves of the drill bit through an equal axis rod, and a torsion spring is sleeved on the axis rod of the cutting knife, and the two ends of the torsion spring are respectively fixed to the cutting knife and the drill bit, and a sliding groove is provided on the upper part of each cutting knife, and a spring block is slidably provided in the sliding groove of each cutting knife, and a group of limit slots are provided on the upper wall of the two receiving grooves of the drill bit, and a group of limit slots is provided with a plurality of limit slots, and the plurality of limit slots in a group are distributed in a clockwise direction with the adjacent cutting knife axis rod as the axis.

[0014] It is further explained that the thickness of the two cutting knives gradually increases from the opposite sides to the adjacent ends, and the cutting knives are used to cut rocks.

[0015] The beneficial effects of the present invention are as follows: the present invention cooperates with the positioning mechanism and the sampling mechanism, utilizes the teeth on the sliding frame to cooperate with the spur rack to complete the positioning of the fixed rod, utilizes the sampling tube to move downward and rotate to drill and sample the rock, utilizes the rotation of the impeller to offset the vertical force generated during the drilling and sampling, utilizes the fixed rod to offset the lateral force generated during the drilling, utilizes the rotation of the cutting knife to cut and limit the connection between the sampling body and the rock, thereby facilitating the removal of the drilled and sampled rock, utilizes the fixed rod to position, and avoids the water flow impacting the sampling tube to cause deflection, which will cause large errors in subsequent research results and make the inferred data inaccurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the positioning mechanism of the present invention.

[0019] Figure 4 It is a partial three-dimensional structural schematic diagram of the positioning mechanism of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the sampling mechanism of the present invention.

[0021] Figure 6 It is a partial cross-sectional three-dimensional structural schematic diagram of the sampling mechanism of the present invention.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the hollow shell of the sampling mechanism of the present invention.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the drill bit of the present invention.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the cutting knife of the present invention.

[0025] In the above figures: 1-annular housing, 2-connecting plate, 3-fixed housing, 4-positioning mechanism, 401-notched cylinder, 402-fixed rod, 403-spur rack, 4031-inner housing, 404-limiting sleeve, 405-tension spring, 406-limiting plate, 407-sliding frame, 408-reset spring, 409-connecting frame, 410-swinging rod, 411-mounting frame, 412-spur gear, 413-contact block, 5-sampling Mechanism, 501-impeller, 502-electric hydraulic push rod, 503-driving member, 504-driving gear, 505-spline rod, 506-fixed frame, 507-driven gear, 509-hollow shell, 510-hollow shaft, 511-sampling tube, 512-limiting rod, 513-sliding rod, 514-limiting groove, 515-drill rod, 516-drill bit, 517-cutting knife, 518-spring block, 519-limiting slot. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0027] like Figure 1-Figure 9 As shown, an embodiment of the present invention provides a gravel rock drilling sampling device for hydrogeological exploration, including an annular shell 1, a hanging ring is welded on the top of the annular shell 1, a connecting plate 2 is installed on the bottom of the annular shell 1 by bolts, a plurality of fan-shaped through grooves are opened on the annular shell 1 and the connecting plate 2, and the plurality of fan-shaped through grooves are evenly and equidistantly distributed circumferentially to reduce water resistance, a fixing shell 3 is installed on the connecting plate 2 by bolts, a positioning mechanism 4 is provided on the fixing shell 3, the positioning mechanism 4 is used to fix the sampling position, a sampling mechanism 5 is provided between the annular shell 1 and the fixing shell 3, the sampling mechanism 5 is used to drill underwater rocks, the positioning mechanism 4 cooperates with the sampling mechanism 5 to fix the sampling position, and performs drilling sampling to prevent the sampling position from being deviated due to water flow impact.

[0028] The positioning mechanism 4 includes a notched cylinder 401, and there are three notched cylinders 401. The three notched cylinders 401 are all installed inside the fixed shell 3. The three notched cylinders 401 are evenly and equidistantly distributed in the circumferential direction, and the angles between the three notched cylinders 401 are the same. A fixing rod 402 is provided in each notched cylinder 401, and a threaded groove is provided on the outer side of each fixing rod 402. Three circular through holes are provided in the circumferential direction of the bottom of the fixed shell 3. The lower end of each fixing rod 402 passes through the adjacent circular through holes on the fixed shell 3 and is slidably sealed therewith. The lower end of each fixing rod 402 is set as a conical block. Each fixing The upper part of the fixed rod 402 is embedded with a spur rack 403, and the three spur racks 403 are respectively slidably set at the notches of the three notched cylinders 401. An inner shell 4031 is installed between the bottom of the fixed shell 3 and the lower side of the connecting disk 2 by bolts. The inner shell 4031 is a cylindrical tube structure with openings at both ends. The inner shell 4031 is provided with an internal thread. A limit sleeve 404 is slidably provided on the outer side of the inner shell 4031. Three tension springs 405 are fixedly connected between the limit sleeve 404 and the connecting disk 2. Three groups of positioning components are provided at the bottom of the fixed shell 3, and the positioning components are used to fix and limit the fixed rod 402.

[0029] The positioning assembly includes a limiting plate 406, two limiting plates 406 are provided, and the two limiting plates 406 are installed at the bottom of the fixed shell 3 by bolts. A sliding frame 407 is slidably provided between the two limiting plates 406. The left part of the sliding frame 407 is provided with teeth. The teeth on the sliding frame 407 are respectively limited with adjacent straight racks 403. The teeth on the sliding frame 407 are meshed with adjacent straight racks 403 to fix and limit the fixed rod 402. The bottom of the limiting sleeve 404 is provided with three wedge-shaped The three wedge-shaped grooves are evenly and equidistantly distributed around the circumference. The sliding frame 407 is slidably set in the adjacent wedge-shaped grooves on the limiting sleeve 404. A reset spring 408 is fixed between the sliding frame 407 and the inner shell 4031. The reset spring 408 is used to push the sliding frame 407 so that the teeth on the sliding frame 407 are engaged with the adjacent straight rack 403 to fix the fixed rod 402. A connecting frame 409 is welded to the bottom of the fixed shell 3 on the front side of the limiting plate 406. The upper part of the connecting frame 409 is rotated by the rotating rod. A swing rod 410 is installed in a circumferential direction on the outer side of the limit sleeve 404. The inner parts of the three swing rods 410 are respectively slidably arranged in the adjacent limit grooves on the limit sleeve 404. The rotating rods on both sides of the swing rod 410 are sleeved with torsion springs. The two ends of the torsion springs are respectively fixedly connected to the swing rod 410 and the connecting frame 409. A mounting frame 411 is installed at the bottom of the fixed shell 3 on the left side of the connecting frame 409. The upper part of the mounting frame 411 is rotatably installed with a spur gear meshing with the adjacent spur rack 403. 412, a contact block 413 is installed on the spur gear 412, the contact block 413 is a half-notched cone, and the shape of the contact block 413 is set to gradually change in the counterclockwise direction, the contact block 413 is in contact with the swing rod 410, the contact block 413 rotates to push the swing rod 410 to swing out of the wedge-shaped groove of the limit sleeve 404, the limit on the limit sleeve 404 is released, and the teeth on the sliding frame 407 are meshed with the adjacent spur rack 403 through the reset spring 408, thereby completing the fixation of the fixed rod 402.

[0030] The sampling mechanism 5 includes an impeller 501, and there are three impellers 501. The three impellers 501 are all circumferentially rotatably arranged on the upper part of the annular shell 1 through the shaft rod. The rotation of the impeller 501 offsets the vertical force generated by drilling, and the lateral force generated by drilling is offset by the fixing rod 402. The shaft rods of the three impellers 501 are connected through pulleys and belt transmission. An electric hydraulic push rod 502 is installed on the top of the annular shell 1 through bolts. A driving member 503 is installed on the upper part of the annular shell 1 on the left side of the electric hydraulic push rod 502 through bolts. The output shaft of the driving member 503 is connected to the shaft rod of the adjacent impeller 501 through pulleys and belt transmission. A driving gear 504 is installed on the output shaft of the driving member 503. The electric hydraulic push rod 50 The telescopic end of the connecting plate 2 is rotatably mounted with a spline rod 505 through a connecting piece, a fixing frame 506 is mounted on the upper side of the connecting plate 2, a circular through hole is opened in the middle of the fixing frame 506, the circular through hole of the fixing frame 506 is sleeved on the outer side of the spline rod 505 with a gap, a driven gear 507 meshing with the driving gear 504 is rotatably mounted on the fixing frame 506, the driven gear 507 and the spline rod 505 are matched through splines, a sampling assembly is arranged in the inner shell 4031, the sampling assembly passes through the fixing shell 3 and is sealed and slidably connected thereto, the sampling assembly is limitedly matched with the inner shell 4031, the sampling assembly is used for underwater rock drilling sampling, a drilling assembly is arranged at the lower part of the spline rod 505, and the drilling assembly is used for underwater rock drilling and cutting.

[0031] The sampling assembly includes a hollow shell 509, and there are three hollow shells 509. The three hollow shells 509 are all arranged in the inner shell 4031 and threadedly matched therewith. The inner side surfaces of the plurality of hollow shells 509 are fixedly connected with hollow shafts 510. The lower part of the hollow shaft 510 is provided with a plurality of water guide holes, and the plurality of water guide holes are evenly and equidistantly distributed in the circumferential direction. The upper part of the water guide holes on the hollow shaft 510 is installed with a filter screen, and the filter screen is used to filter impurities in the water. The hollow shaft 510 0 is installed at the lower part, and a sampling tube 511 is provided with a plurality of cavities, and the plurality of cavities are evenly and equidistantly distributed in the circumferential direction. The cavities on the sampling tube 511 cooperate with the water guide holes on the hollow shaft 510 for the circulation of water, and reduce the friction force of the sampling tube 511 during drilling and sampling. A limiting rod 512 is rotatably installed in each hollow shell 509, and a rectangular groove is vertically provided in the middle of the limiting rod 512, and a rectangular groove is horizontally provided in the middle of the limiting rod 512. The rectangular groove on the limit rod 512 is connected to the straight hole, and a sliding rod 513 is slidably provided at the lower part of each hollow shell 509. The upper end of the sliding rod 513 passes through the rectangular groove of the limit rod 512. A pin is fixedly connected to the upper part of the sliding rod 513. The pin on the sliding rod 513 is slidably set in the straight hole of the adjacent limit rod 512. A spring is fixedly connected between the upper end of the sliding rod 513 and the adjacent hollow shell 509. The inner ends all pass through the hollow shaft 510 and are slidably connected thereto. The circumferential wall of the spline rod 505 is provided with a plurality of limit grooves 514. The inner ends of the plurality of limit rods 512 are slidably arranged in adjacent limit grooves 514 respectively. The hollow shell 509 moves downward to allow the sliding rod 513 to collapse therein, and the limit rod 512 then swings upward to cooperate with the rotation of the spline rod 505, so that the limit rod 512 moves out of the limit groove 514, thereby releasing the fixation of the hollow shaft 510.

[0032] The drilling assembly includes a drill rod 515, which is connected to the lower end of the spline rod 505. The circumferential wall of the drill rod 515 is provided with a threaded groove for discharging materials. A drill bit 516 is installed at the lower end of the drill rod 515. The lower part of the drill bit 516 is V-shaped. The drill bit 516 is used to drill holes in rocks. The lower part of the drill bit 516 is provided with two symmetrical receiving grooves. Cutting knives 517 are rotatably installed in the two receiving grooves of the drill bit 516 through an equal shaft rod. The thickness of the two cutting knives 517 gradually becomes thicker from the opposite side to the end close to each other. A torsion spring is sleeved on the shaft of the cutting knife 517. The two ends of the torsion spring are respectively fixedly connected to the cutting knife 517 and the drill bit 516. A sliding groove is provided on the upper part of each cutting knife 517. A spring block 518 is slidably provided in the slide groove of each cutting knife 517, and a group of limiting slots 519 are opened on the upper walls of the two receiving slots of the drill bit 516. A group of limiting slots 519 is provided with a plurality of limiting slots 519, and the plurality of limiting slots 519 in a group are distributed in a clockwise direction with the adjacent cutting knife 517 shaft as the axis. The cutting knife 517 is swung outward and moved out of the receiving slot of the drill bit 516 under the action of the torsion spring thereon, and the spring block 518 cooperates with the limiting slot 519 to prevent the cutting knife 517 from resetting, and the cutting knife 517 is rotated to cut off the rock on the lower side of the sampling tube 511, so that it is convenient to take out the sampled rock, and it is avoided that the sampled rock cannot be taken out due to no cutting.

[0033] When drilling and sampling underwater rocks, the user first fixes the rope of the lifting device on the ship to the hanging ring on the annular shell 1, then puts the present invention into the water, and makes the lifting device release the rope. The present invention sinks into the water under the action of gravity. When the fixed rod 402 contacts the bottom of the water, the present invention continues to move downward under the action of gravity. When the fixed rod 402 contacts the underwater rock, the rope on the lifting device is still released, and the fixed shell 3 continues to move downward relative to the fixed rod 402. Through the cooperation of the spur rack 403 and the spur gear 412, the contact block 413 rotates and squeezes the adjacent swing rod 410, so that one of the swing rods 4 10 moves out of the limiting groove of the inner shell 4031. As the present invention continues to move downward, the remaining swing rods 410 move out of the limiting grooves of the inner shell 4031, thereby releasing the limiting of the inner shell 4031. Initially, the tension spring 405 is in a stretched state, and the return spring 408 is in a compressed state. After the limiting is released, the inner shell 4031 moves upward under the action of the tension spring 405. At the same time, under the action of the return spring 408, the sliding frame 407 moves through the teeth thereon to cooperate with the spur rack 403, thereby completing the limiting fixation of the spur rack 403, and then completing the fixing and limiting of the three fixing rods 402, so that the fixed shell 3 is in a vertical state.

[0034] After fixing the fixing rod 402, the user starts the electric hydraulic push rod 502 and the driving member 503. The driving member 503 works to rotate the driving gear 504. At the same time, the driving member 503 works to rotate the impeller 501 through the pulley and belt transmission. The three impellers 501 rotate to generate an upward thrust, which offsets the vertical force generated by the rotation of the sampling tube 511, so that the sampling tube 511 always maintains the sampling direction. The driving gear 504 rotates through the driven gear 507 to rotate the spline rod 505. The spline rod 505 rotates through the hollow shaft 510 to rotate the hollow shell 509 and the sampling tube 511 thereon. At the same time, the electric hydraulic push rod 502 works to rotate the spline rod 505 to The spline rod 505 moves downward, and the spline rod 505 moves downward to drive the parts on it to move downward. The hollow shell 509 moves downward and rotates to drill and sample the rock through the sampling tube 511. The lateral force generated by the drilling is offset by the fixed rod 402, and the spline rod 505 moves downward and rotates to drill the rock through the drill rod 515 and the drill bit 516, and the debris generated by the drilling is transported upward and discharged. When the sliding rod 513 moves downward and contacts the bottom of the fixed shell 3, the hollow shell 509 continues to move downward, so that the sliding rod 513 collapses into the hollow shell 509. The sliding rod 513 collapses into the hollow shell 509, which drives the limit rod 512 to swing upward. The limit rod 512 swings upward and contacts the spline rod The screwdriver 516 is pressed against the bottom surface of the drill bit 516 and the screwdriver 516 is pressed against the bottom surface of the drill bit 516. The screwdriver 516 is pressed against the bottom surface of the drill bit 516 and the screwdriver 516 is pressed against the bottom surface of the drill bit 516. The rock is taken out to avoid the rock after sampling being unable to be taken out due to not being cut off. The user then turns off the electric hydraulic push rod 502 and the driving member 503. The user then reels in the rope through the lifting equipment, so that the present invention is moved upward out of the water. At the same time, the user takes the present invention out of the water and resets the cutting knife 517. The sampling tube 511 is then removed and the sampled rock inside is taken out and stored. The user then starts the electric hydraulic push rod 502 and the driving member 503 to work in reverse, so that the drill bit 516 and the hollow shaft 510 are reset and closed. The user then resets the cutting knife 517 and the sampling tube 511. The user then resets the fixing rod 402.

[0035] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. A gravel rock drilling sampling device for hydrogeological exploration, comprising an annular shell (1), a hanging ring is arranged on the top of the annular shell (1), a connecting plate (2) is installed on the bottom of the annular shell (1), and a fixing shell (3) is arranged on the bottom of the connecting plate (2), wherein: The device further comprises a positioning mechanism (4), the positioning mechanism (4) being arranged on the fixed shell (3), the positioning mechanism (4) being used to fix the sampling position, a sampling mechanism (5) being arranged between the annular shell (1) and the fixed shell (3), the sampling mechanism (5) being used to drill underwater rocks, the positioning mechanism (4) and the sampling mechanism (5) cooperating to fix the sampling position, and performing drilling sampling, so as to prevent the sampling position from being deflected due to water flow impact; The positioning mechanism (4) comprises a notched cylinder (401), wherein a plurality of notched cylinders (401) are provided, and the plurality of notched cylinders (401) are installed inside the fixed shell (3), and the plurality of notched cylinders (401) are evenly and equidistantly distributed in the circumferential direction, and a fixing rod (402) is provided inside each notched cylinder (401), and the lower end of each fixing rod (402) passes through the fixed shell (3) and is slidably and sealingly connected thereto, and the lower end of each fixing rod (402) is arranged as a conical block, and a straight rack (403) is embedded in the upper part of each fixing rod (402), and the plurality of straight racks ( 403) are respectively slidably arranged at the notches of a plurality of notched cylinders (401), an inner shell (4031) is installed at the bottom of the fixed shell (3), an inner thread is provided inside the inner shell (4031), the top of the inner shell (4031) is fixedly connected to the lower side of the connecting disk (2), a limiting sleeve (404) is slidably arranged on the outer side of the inner shell (4031), a plurality of tension springs (405) are fixedly connected between the limiting sleeve (404) and the connecting disk (2), and a plurality of groups of positioning components are provided at the bottom of the fixed shell (3), and the positioning components are used to fix and limit the fixed rod (402); The positioning assembly comprises a limiting plate (406), wherein two limiting plates (406) are provided, and the two limiting plates (406) are both installed at the bottom of the fixed shell (3), a sliding frame (407) is slidably provided between the two limiting plates (406), and teeth are provided on the left portion of the sliding frame (407), and the teeth on the sliding frame (407) are respectively limitedly matched with adjacent spur racks (403), and a plurality of wedge-shaped grooves are provided at the bottom of the limiting sleeve (404), and the plurality of wedge-shaped grooves are evenly and equidistantly distributed in the circumferential direction, and the sliding frame (407) is slidably arranged in adjacent wedge-shaped grooves on the limiting sleeve (404), and a return spring (408) is fixedly connected between the sliding frame (407) and the inner shell (4031), and a connecting frame (409) is installed at the bottom of the fixed shell (3), and the connecting frame (409) is located at the front side of the limiting plate (406), and the connecting frame ( The upper part of the fixed housing (409) is rotatably mounted with a swing rod (410) through a rotating rod, a plurality of limiting grooves are circumferentially formed on the outer side surface of the limiting sleeve (404), the interiors of the plurality of swing rods (410) are respectively slidably arranged in adjacent limiting grooves on the limiting sleeve (404), the rotating rods on both sides of the swing rod (410) are sleeved with torsion springs, the two ends of the torsion springs are respectively fixedly connected to the swing rod (410) and the connecting frame (409), a mounting frame (411) is mounted at the bottom inside the fixed housing (3), the mounting frame (411) is located on the left side of the connecting frame (409), a spur gear (412) is rotatably mounted on the upper part of the mounting frame (411), the spur gear (412) is meshed with an adjacent spur rack (403), a contact block (413) is mounted on the spur gear (412), and the contact block (413) is in contact with and cooperates with the swing rod (410); The contact block (413) is in the form of a half-notched cone, and the shape of the contact block (413) is configured to gradually change in a counterclockwise direction, so as to push the swing rod (410) to swing.

2. A gravel rock drilling sampling device for hydrogeological exploration according to claim 1, characterized in that: A plurality of fan-shaped through grooves are provided on the annular shell (1) and the connecting plate (2), and the plurality of fan-shaped through grooves are evenly and equidistantly distributed in the circumferential direction, so as to reduce water resistance.

3. A gravel rock drilling sampling device for hydrogeological exploration according to claim 1, characterized in that: The sampling mechanism (5) comprises an impeller (501), wherein a plurality of impellers (501) are provided, and the plurality of impellers (501) are rotatably provided on the upper part of the annular housing (1) via shafts, and the shafts of the plurality of impellers (501) are connected via pulleys and belt transmission, an electric hydraulic push rod (502) is installed at the top of the annular housing (1), and a driving member (503) is installed at the upper part of the annular housing (1), and the driving member (503) is located on the left side of the electric hydraulic push rod (502), and the output shaft of the driving member (503) is connected to the shaft of the adjacent impeller (501) via pulleys and belt transmission, and a driving gear (504) is installed on the output shaft of the driving member (503), and a spline rod (504) is rotatably provided on the telescopic end of the electric hydraulic push rod (502) via a connecting member. 05), a fixing frame (506) is installed on the upper side of the connecting plate (2), a circular through hole is opened in the middle of the fixing frame (506), the circular through hole of the fixing frame (506) is sleeved on the outer side of the spline rod (505) with a gap, a driven gear (507) is rotatably installed on the fixing frame (506), the driven gear (507) is meshed with the driving gear (504), the driven gear (507) and the spline rod (505) are matched through splines, a sampling assembly is provided in the inner shell (4031), the sampling assembly passes through the fixing shell (3) and is sealed and slidably connected thereto, the sampling assembly is limitedly matched with the inner shell (4031), the sampling assembly is used for underwater rock drilling sampling, and a drilling assembly is provided at the lower part of the spline rod (505), the drilling assembly is used for underwater rock drilling and cutting.

4. A gravel rock drilling sampling device for hydrogeological exploration according to claim 3, characterized in that: The sampling assembly comprises a hollow shell (509), wherein a plurality of hollow shells (509) are provided, wherein the plurality of hollow shells (509) are all arranged in an inner shell body (4031) and threadedly matched therewith, wherein a hollow shaft (510) is fixedly connected to the inner side surface of the plurality of hollow shells (509), wherein a plurality of water guide holes are provided at the lower part of the hollow shaft (510), wherein the plurality of water guide holes are evenly and equidistantly distributed in the circumferential direction, wherein a filter screen is installed at the upper part of the water guide holes on the hollow shaft (510), wherein a sampling tube (511) is installed at the lower part of the hollow shaft (510), wherein a plurality of cavities are provided on the sampling tube (511), wherein the plurality of cavities are evenly and equidistantly distributed in the circumferential direction, wherein a limiting rod (512) is rotatably installed in each hollow shell (509), wherein a rectangular groove is vertically provided in the middle part of the limiting rod (512), wherein the limiting rod (512) is provided with a plurality of cavities. A straight hole is horizontally opened in the middle of the hollow shell (509), and a rectangular groove on the limit rod (512) is connected to the straight hole. A sliding rod (513) is slidably provided at the lower part of each hollow shell (509). The upper end of the sliding rod (513) passes through the rectangular groove of the limit rod (512). A pin is fixedly connected to the upper part of the sliding rod (513). The pin on the sliding rod (513) is slidably set in the straight hole of the adjacent limit rod (512). A spring is fixedly connected between the upper end of the sliding rod (513) and the adjacent hollow shell (509). The inner ends of the plurality of limit rods (512) all pass through the hollow shaft (510) and are slidably connected thereto. The circumferential wall of the spline rod (505) is opened with a plurality of limit grooves (514), and the inner ends of the plurality of limit rods (512) are slidably set in the adjacent limit grooves (514) respectively.

5. A sandstone drilling and sampling device for hydrogeological exploration according to claim 4, characterized in that: The water guide hole on the hollow shaft (510) is in an F shape, and the water guide hole on the hollow shaft (510) is in communication with an adjacent cavity on the sampling tube (511), so as to allow water to flow and reduce the friction of the sampling tube (511).

6. A gravel rock drilling sampling device for hydrogeological exploration according to claim 3, characterized in that: The drilling assembly comprises a drill rod (515), the drill rod (515) is connected to the lower end of the spline rod (505), a threaded groove for discharging material is provided on the circumferential wall of the drill rod (515), a drill bit (516) is installed at the lower end of the drill rod (515), two symmetrical receiving grooves are provided at the lower part of the drill bit (516), a cutting knife (517) is rotatably installed in the two receiving grooves of the drill bit (516) through an equal shaft rod, a torsion spring is sleeved on the shaft rod of the cutting knife (517), and two ends of the torsion spring are connected to the cutting knife (517) to form a hole. The ends are respectively fixedly connected to the cutting blade (517) and the drill bit (516), each cutting blade (517) is provided with a slide groove on the upper part, and a spring block (518) is slidably arranged in the slide groove of each cutting blade (517), and a group of limiting grooves (519) are provided on the upper walls of the two containing grooves of the drill bit (516), and a group of limiting grooves (519) is provided with a plurality of limiting grooves, and the plurality of limiting grooves (519) in a group are distributed in a clockwise direction with the adjacent cutting blade (517) shaft rod as the axis.

7. A gravel rock drilling sampling device for hydrogeological exploration according to claim 6, characterized in that: The thickness of the two cutting knives (517) gradually increases from the opposite sides to the adjacent ends, and are used for cutting rocks.

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