A rock and soil detection sampling device

Abstract

The present invention relates to the technical field of detection devices, and in particular to a rock and soil detection sampling device, which comprises a frame, a drilling barrel, a vertical driving mechanism, a circumferential driving mechanism, a sensing component, a cutting mechanism and a wrapping mechanism; the present invention drives the drilling barrel to move downward through the vertical driving mechanism, and drives the drilling barrel to rotate around its own axis through the circumferential driving mechanism, and with the axial movement and circumferential rotation of the drilling barrel, the length of the sample core in the accommodating cavity gradually increases, and in the sampling process, the wrapping mechanism wraps around the outer surface of the sample core, and when the length of the sample core in the accommodating cavity reaches a preset value, the cutting mechanism cuts off the position where the sample core is connected to the rock and soil geology, thereby solving the problem that the sample core and the rock stratum are not easy to be disconnected in the prior art; after the sample core is cut off, the wrapping mechanism wraps up the lower surface of the sample core; thereafter, in the process of the drilling barrel moving upward, the sample core is lifted up by the wrapping mechanism until the sample core is separated from the rock and soil surface, thereby improving the integrity of the sample core when it is taken out from the rock and soil geology.

Description

Technical Field

[0001] The invention relates to the technical field of detection devices, and in particular to a rock and soil detection sampling device. Background Art

[0002] Geotechnical testing plays an irreplaceable role in the field of geotechnical engineering. It not only provides a reliable basis and parameter support for engineering design and construction, but also ensures the safety and stability of the project by assessing engineering risks and guiding construction. Therefore, in geotechnical engineering, geotechnical testing must be highly valued and operated in strict accordance with relevant specifications and standards. In the process of testing, the quality and accuracy of sampling directly affect the reliability of subsequent test results, and thus affect engineering design, construction and safety. Therefore, in the sampling process, the operating procedures must be strictly followed to ensure the representativeness and integrity of the sampling.

[0003] There are many different methods for rock and soil sampling. Different sampling methods and tools can be selected according to the type of rock and soil and the sampling depth. Common sampling methods include manual sampling, spiral sampling and drilling sampling. In the process of drilling sampling, it is necessary to first drill a hole with a drill rod, and then manually extract the rock and soil sample at the end of the drill rod.

[0004] When sampling rocks, columnar samples are not easy to be disconnected from the rock formation. In order to facilitate the separation of the sample core from the rock formation, a cutting groove is usually cut on the bottom peripheral wall of the sample core, such as a core sampling device for geotechnical engineering disclosed in a Chinese patent with publication number CN115184073A. However, the cutting groove depth of the sampling device in the above patent and the prior art is relatively small, and the sample core is not completely cut off from the rock formation. There are still obstacles when separating the sample core from the rock formation. After separation, when the sample core is taken out of the rock formation, the sample core will scatter and fall, and the integrity of the taken out sample core is low, which affects the subsequent detection process. Summary of the invention

[0005] According to the shortcomings of the prior art, the present invention proposes a rock and soil detection sampling device, which solves the problems in the prior art that the sample core is difficult to be disconnected from the rock layer and the integrity of the taken sample core is poor.

[0006] A rock and soil detection sampling device of the present invention adopts the following technical solution, including:

[0007] Rack, horizontal setting;

[0008] The inner wall of the drilling tube defines a receiving cavity for receiving the sample core; the drilling tube can be moved up and down and rotatably installed on the frame, a drill bit is fixedly connected to the lower end of the drilling tube, and a receiving groove is opened at the lower part of the drilling tube, and the bottom of the receiving groove is connected to the receiving cavity;

[0009] A vertical driving mechanism is installed on the frame and connected to the drilling tube. The vertical driving mechanism is used to drive the drilling tube to move vertically. As the drilling tube moves downward, the length of the sample core in the accommodating chamber gradually increases.

[0010] The circumferential drive mechanism is installed on the frame and connected to the drilling tube. The circumferential drive mechanism is used to drive the drilling tube to rotate around its own axis;

[0011] The sensing component is installed inside the drilling tube and is used to sense the length of the sample core in the accommodating cavity;

[0012] A cutting mechanism is installed in the receiving groove, and is used to cut off the connection between the sample core and the ground surface when the length of the sample core in the receiving cavity reaches a preset value;

[0013] The wrapping mechanism is installed on the drilling tube. As the length of the sample core in the accommodating cavity increases, the wrapping mechanism wraps around the outer surface and the lower surface of the sample core.

[0014] Optionally, the sensing component includes a bracket and a sensing block, the bracket is arranged in the drilling barrel, the bracket moves up and down synchronously with the drilling barrel, a receiving groove is opened at the lower end of the bracket, the bottom of the receiving groove is connected with the receiving cavity; the bracket is fixedly connected with a guide shaft, and the sensing block is installed on the guide shaft so as to be movable up and down; in an initial state, the lower surface of the sensing block is flush with the lower surface of the drilling barrel; a reset structure is directly provided on the upper surface of the sensing block and the guide shaft, and the reset structure has a tendency to move the sensing block away from the guide shaft.

[0015] Optionally, the cutting mechanism includes a plurality of cutting units, and the plurality of cutting units are evenly distributed along the circumference of the drilling tube; the cutting unit includes a cutting knife, a reaction block, a plurality of connecting blocks and a plurality of connecting components; the plurality of connecting blocks are arranged at intervals in the receiving groove; the reaction block is located above the uppermost connecting block; between two adjacent connecting blocks, the cutting knife and the lowermost connecting block are connected through a connecting component; the uppermost connecting block and the reaction block are hinged;

[0016] The upper end of the induction block is fixedly connected with a guide cylinder, which is sleeved on the outside of the guide shaft, and a sensing cavity is defined between the guide cylinder and the guide shaft, and the receiving groove is connected with the sensing cavity through a first connecting pipe, and the first connecting pipe is a hose; the receiving groove includes a first groove and a second groove which are connected; the first groove is vertically arranged; the second groove extends along the radial direction of the drilling tube, the outer end of the second groove is connected with the lower end of the first groove, and the inner end is connected with the receiving cavity; the cutting knife is located in the second groove in the initial state;

[0017] The connecting component has a locked state and an unlocked state. When the connecting component is in the locked state, the two connecting blocks connected by the connecting component or the connecting block and the cutting knife are fixed. When the connecting component is in the unlocked state, the two connecting blocks connected by the connecting component or the connecting block and the cutting knife can rotate relative to each other. A switching piece is installed at the inner end of the second groove, and the switching piece is used to switch the state of the connecting component.

[0018] Optionally, the connecting assembly includes a first shaft sleeve, a second shaft sleeve, a locking shaft and a sliding block; two of each of the second shaft sleeve, the locking shaft and the sliding block are provided;

[0019] The first sleeve is arranged at one end of the cutting knife and the connecting block close to the reaction block; the two second sleeves are arranged at one end of the connecting block and the reaction block close to the cutting knife, the two second sleeves are coaxial and arranged at intervals along the axial direction, and the distance between the two second sleeves is not less than the length of the first sleeve; the first sleeve is respectively installed with a locking shaft towards both ends of the two second sleeves; the locking shaft is coaxially arranged with the first sleeve and the second sleeve, and can only move axially relative to the first sleeve and the second sleeve; the ends of the two locking shafts away from each other are fixedly connected to a rotating shaft, and the second sleeves can rotate relative to the rotating shaft; each locking shaft is fixedly connected to a sliding block, and the sliding block can be movably installed on the cutting knife or the connecting block along the axial direction of the locking shaft;

[0020] When the connecting assembly is in an unlocked state, the locking shaft is located in the first sleeve, the rotating shaft is located in the second sleeve, and the sliding block is located in the cutting knife or the connecting block; when the connecting assembly is in a locked state, the locking shaft is partially located in the first sleeve and partially located in the second sleeve, and the sliding block extends out of the cutting knife or the connecting block by a preset distance; a distance adjustment structure is provided between the two sliding blocks, and the distance adjustment structure is used to make the two sliding blocks move away from each other and extend out of the cutting knife or the connecting block.

[0021] Optionally, the wrapping mechanism includes multiple wrapping units, which are evenly distributed along the circumference of the drilling tube, and the wrapping units are arranged in a one-to-one correspondence with the cutting units; as the cutting knife moves relative to the sample core, the cutting knife cuts a wrapping groove on the sample core, and the wrapping units are filled into the wrapping groove.

[0022] Optionally, the wrapping unit includes a plurality of airbag balls and a plurality of second connecting tubes; the plurality of airbag balls and the plurality of second connecting tubes are alternately arranged and interconnected; the second connecting tube is a hose and can be deformed;

[0023] A plurality of winding assemblies are arranged on the bracket, and the winding assemblies are arranged one-to-one corresponding to the wrapping units, and the winding assemblies are used to wind up the wrapping units; in an initial state, a part of the wrapping unit is rolled up with the winding assembly, and the other part is tensioned in the accommodating cavity; the airbag ball at the lower end is connected to the part of the cutting knife extending out of the second groove; the wrapping unit is connected to a ventilation assembly, and the ventilation assembly is used to fill gas into the wrapping unit or reduce the gas in the wrapping unit.

[0024] Optionally, the winding assembly includes a winding wheel and a winding torsion spring, the axis of the winding wheel is horizontally arranged, and the winding wheel can be rotatably installed on the bracket around its own axis; the wrapping assembly is wound with the winding wheel, and the two ends of the winding torsion spring are respectively connected to the winding wheel and the second connecting tube at the top of the corresponding wrapping assembly, and the winding torsion spring makes the wrapping unit tend to be wound on the winding wheel; the ventilation assembly includes an air pump and a ventilation pipe, and the ventilation pipe connects the air pump and multiple second connecting tubes at the top.

[0025] Optionally, the guide shaft is coaxially arranged with the drilling barrel, a spiral guide groove is provided on the guide shaft, a corresponding guide strip is provided on the inner wall of the guide barrel, and the guide strip is installed in the guide groove; the bracket can rotate around the axis of the drilling barrel relative to the drilling barrel.

[0026] Optionally, the pitch of the guide groove increases gradually from top to bottom.

[0027] Optionally, the vertical driving mechanism includes a moving frame, a vertical pole, a first motor, a driving rod and a synchronous frame; the vertical pole is vertically arranged and fixedly connected to the frame, and the moving frame is movably mounted on the vertical pole; the drilling tube is rotatably mounted on the moving frame; the driving rod is rotatably mounted on the frame, and the driving rod is connected to the output end of the first motor; the moving frame is threadedly matched with the driving rod; and the two ends of the synchronous frame are respectively fixedly connected to the moving frame and the bracket;

[0028] The circumferential driving mechanism includes a second motor, a driving wheel and a driven wheel; the second motor is installed on the mobile frame, the driving wheel is connected to the output end of the second motor, the driven wheel is synchronously rotatably connected to the drilling tube, and the driven wheel is meshed with the driving wheel.

[0029] The beneficial effects of the present invention are as follows: when sampling, a rock and soil detection sampling device of the present invention drives the drilling barrel to move downward through the vertical driving mechanism, and drives the drilling barrel to rotate around its own axis through the circumferential driving mechanism. With the axial movement and circumferential rotation of the drilling barrel, the length of the sample core in the accommodating chamber gradually increases. During the sampling process, the sensing component senses the length of the sample core in the accommodating chamber, and the wrapping mechanism wraps the outer surface of the sample core. When the length of the sample core in the accommodating chamber reaches a preset value, the cutting mechanism cuts off the geological connection between the sample core and the rock and soil. After the sample core is cut off, the wrapping mechanism wraps the lower surface of the sample core. Thereafter, the drilling barrel is driven upward by the vertical driving mechanism. During the upward movement of the drilling barrel, the wrapping mechanism lifts the sample core until the sample core is separated from the rock and soil surface, and the sample core is taken out of the drilling barrel to complete the sampling work. The present invention solves the problem in the prior art that the sample core is difficult to disconnect from the rock formation by providing a cutting mechanism, and improves the integrity of the sample core when it is taken out from the rock and soil geology by providing a wrapping mechanism, and the wrapping work is carried out synchronously during the drilling process, thereby solving the problem of the sample core breaking in the middle due to the vibration of the drilling barrel during drilling sampling, and further optimizing the integrity of the sample core.

[0030] Furthermore, a spiral guide groove is provided on the peripheral wall of the guide shaft, and the pitch of the guide groove gradually increases from top to bottom. During the drilling process, the rotation of the guide shaft drives the bracket to rotate synchronously. In coordination with the downward movement of the bracket, the cutting knife cuts a spiral wrapping groove on the outer surface of the sample core. The pitch of the wrapping groove gradually decreases from top to bottom, so that at the lower part of the sample core where the force is greater, the distance between the upper and lower wrapping units is smaller, thereby further optimizing the wrapping effect and ensuring the integrity of the sample core. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a schematic diagram of the overall structure of a rock and soil detection sampling device of the present invention;

[0033] Figure 2 It is a side view of a rock and soil detection sampling device of the present invention;

[0034] Figure 3 for Figure 2 Middle AA section cutaway view;

[0035] Figure 4 for Figure 3 Enlarged image at the center X;

[0036] Figure 5 for Figure 3 Enlarged view of Y in the middle;

[0037] Figure 6 It is a structural schematic diagram of the internal structure of a drilling tube in a rock and soil detection sampling device of the present invention;

[0038] Figure 7 It is a schematic diagram of the installation of a winding assembly in a rock and soil detection sampling device of the present invention;

[0039] Figure 8 It is a structural schematic diagram of a support, a sensing block and a guide cylinder in a rock and soil detection sampling device of the present invention;

[0040] Fig. 9 It is a structural schematic diagram of a support, a cutting mechanism and a first connecting pipe in a rock and soil detection sampling device of the present invention;

[0041] Fig.10 for Fig. 9Middle BB section cutaway view;

[0042] Fig.11 It is a schematic diagram of the installation of a connection component in a rock and soil detection sampling device of the present invention;

[0043] Fig.12 It is a cross-sectional schematic diagram of a connecting component in a rock and soil detection sampling device of the present invention in a locked state;

[0044] Fig.13 It is a cross-sectional schematic diagram of a connecting component in a rock and soil detection sampling device of the present invention in an unlocked state.

[0045] In the figure: 100, frame; 200, drilling tube; 210, accommodating chamber; 300, sample core; 220, accommodating groove; 221, first groove; 222, second groove; 223, wedge block; 400, vertical drive mechanism; 410, vertical pole; 420, mobile frame; 430, drive rod; 440, first motor; 450, synchronous frame; 500, circumferential drive mechanism; 510, second motor; 520, driving wheel; 530, driven wheel; 600, induction component; 610, bracket; 620, induction block; 621, guide To cylinder; 622, sensing chamber; 623, first connecting tube; 624, limiting protrusion; 630, guide shaft; 631, guide groove; 700, cutting unit; 710, cutting knife; 720, reaction block; 730, connecting block; 740, connecting assembly; 741, first sleeve; 742, second sleeve; 743, locking shaft; 744, rotating shaft; 745, sliding block; 746, locking groove; 800, wrapping unit; 810, airbag ball; 820, second connecting tube; 830, winding wheel; 840, ventilation pipe. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] like Figures 1 to 13 As shown, a rock and soil detection sampling device provided by an embodiment of the present invention includes a frame 100, a drilling tube 200, a vertical drive mechanism 400, a circumferential drive mechanism 500, a sensing component 600, a cutting mechanism and a wrapping mechanism;

[0048] The rack 100 is arranged horizontally;

[0049] The inner wall of the drilling tube 200 defines a receiving cavity 210 for receiving the sample core 300; the drilling tube 200 can be moved up and down and rotatably installed on the frame 100, and a drill bit is fixedly connected to the lower end of the drilling tube 200;

[0050] The vertical driving mechanism 400 is installed on the frame 100 and connected to the drilling tube 200. The vertical driving mechanism 400 is used to drive the drilling tube 200 to move vertically. As the drilling tube 200 moves downward, the length of the sample core 300 in the accommodating cavity 210 gradually increases.

[0051] The circumferential driving mechanism 500 is installed on the frame 100 and connected to the drilling tube 200. The circumferential driving mechanism 500 is used to drive the drilling tube 200 to rotate around its own axis.

[0052] The sensing component 600 is installed inside the drilling tube 200, and the sensing component 600 is used to sense the length of the sample core 300 in the accommodating cavity 210;

[0053] The cutting mechanism is installed at the lower part of the frame 100, and is used to cut off the connection position between the sample core 300 and the ground surface when the length of the sample core 300 in the accommodating cavity 210 reaches a preset value;

[0054] The wrapping mechanism is installed on the drilling tube 200 , and as the length of the sample core 300 in the accommodating cavity 210 increases, the wrapping mechanism wraps around the outer surface and the lower surface of the sample core 300 .

[0055] When sampling, the frame 100 is placed above the rock to be sampled; the vertical drive mechanism 400 and the circumferential drive mechanism 500 are started; the vertical drive mechanism 400 drives the drilling tube 200 to move downward, and the circumferential drive mechanism 500 drives the drilling tube 200 to rotate around its own axis. With the axial movement and circumferential rotation of the drilling tube 200, the length of the sample core 300 in the accommodating cavity 210 gradually increases. During the sampling process, the sensing component 600 senses the length of the sample core 300 in the accommodating cavity 210, and the wrapping mechanism wraps the sample core 300 in the accommodating cavity 210. The outer surface of the sample core 300, when the length of the sample core 300 in the accommodating cavity 210 reaches a preset value, the cutting mechanism cuts off the position where the sample core 300 is connected to the rock and soil geology, and after the sample core 300 is cut off, the wrapping mechanism wraps up the lower surface of the sample core 300; thereafter, the drilling tube 200 is driven upward by the vertical driving mechanism 400, and during the upward movement of the drilling tube 200, the wrapping mechanism lifts the sample core 300 until the sample core 300 is separated from the rock and soil surface, and the sample core 300 is taken out of the drilling tube 200, and the sampling work is completed. The present invention solves the problem that the sample core 300 is not easy to be disconnected from the rock layer in the prior art, and by setting a wrapping mechanism, the integrity of the sample core 300 when it is taken out from the rock and soil geology is improved, and the wrapping work is carried out synchronously during the drilling process, thereby solving the problem that the sample core 300 is broken from the middle due to the vibration of the drilling tube 200 during drilling sampling, and further optimizing the integrity of the sample core 300.

[0056] In a further embodiment, Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the induction assembly 600 includes a bracket 610 and an induction block 620. The bracket 610 is arranged in the drilling tube 200. The bracket 610 moves up and down synchronously with the drilling tube 200. The lower end of the bracket 610 is provided with a receiving groove 220, and the bottom of the receiving groove 220 is connected with the receiving chamber 210. The bracket 610 is fixedly connected with a guide shaft 630, and the induction block 620 is installed on the guide shaft 630 so as to be movable up and down. A plurality of limiting protrusions 624 are fixedly installed on the lower surface of the induction block 620, and the limiting protrusions 624 extend downward. In the initial state, the lower surface of the limiting protrusion 624 is flush with the lower surface of the drilling tube 200. A reset structure is directly provided on the upper surface of the induction block 620 and the guide shaft 630, and the reset structure has a tendency to make the induction block 620 move away from the guide shaft 630. The reset structure can be a compression spring or a magnet. When the structural assembly is two magnets, the magnetic poles of the opposite sides of the two magnets are the same.

[0057] In the initial state, the upper surface of the sample core 300 contacts the lower surface of the limiting protrusion 624; the vertical driving mechanism 400 drives the drilling tube 200 to move downward, and the circumferential driving mechanism 500 drives the drilling tube 200 to rotate around its own axis. With the axial movement and circumferential rotation of the drilling tube 200, the length of the sample core 300 in the accommodating cavity 210 gradually increases, and the upward movement of the sample core 300 relative to the drilling tube 200 makes the sample core 300 abut against the limiting protrusion 624, and the sample core The upper surface of 300 is deformed, and the limiting protrusion 624 penetrates into the upper surface of the sample core 300, so that the sample core 300 will not rotate during the sampling process, thereby preventing the sample core 300 from being twisted off; at the same time, the sensing block 620 is pushed by the sample core 300 and moves upward along its own axis, and its lower surface is always in contact with the upper surface of the sample core 300; the length of the sample core 300 in the accommodating cavity 210 can be sensed according to the position of the sensing block 620 in the drilling tube 200.

[0058] During the upward movement of the sample core 300 relative to the drilling tube 200, the wrapping mechanism wraps around the outer surface of the sample core 300. When the length of the sample core 300 in the accommodating cavity 210 reaches a preset value, the cutting mechanism cuts off the connection between the sample core 300 and the ground surface. After the sample core 300 is cut off, the wrapping mechanism wraps up the lower surface of the sample core 300. Thereafter, the drilling tube 200 is driven upward by the vertical driving mechanism 400. During the upward movement of the drilling tube 200, the wrapping mechanism lifts up the sample core 300. Until the sample core 300 is separated from the rock and soil surface, the sample core 300 has a tendency to move downward, the reset assembly is activated, the induction block 620 is away from the guide shaft 630, and the wrapping mechanism is restored to the initial state at the same time, so that the sample core 300 is pushed outward from the drilling tube 200, and the sampling work is completed. The problem in the prior art that the sample core 300 is difficult to be disconnected from the rock formation is solved, and by providing a wrapping mechanism, the problem of the sample core 300 being broken in the middle due to the vibration of the drilling tube 200 during drilling sampling is avoided, and the removed sample core 300 has higher integrity.

[0059] In a further embodiment, Figure 5 , Figure 6 , Figure 8 , Fig. 9 and Fig.10 As shown; the cutting mechanism includes a plurality of cutting units 700, and the plurality of cutting units 700 are uniformly distributed along the circumference of the drilling tube 200; the cutting unit 700 includes a cutting knife 710, a reaction block 720, a plurality of connecting blocks 730 and a plurality of connecting components 740; the plurality of connecting blocks 730 are arranged at intervals in the receiving groove 220; the reaction block 720 is located above the uppermost connecting block 730; between two adjacent connecting blocks 730, the cutting knife 710 and the lowermost connecting block 730 are connected by a connecting component 740; the uppermost connecting block 730 and the reaction block 720 are hinged;

[0060] The upper end of the induction block 620 is fixedly connected with a guide cylinder 621, which is sleeved on the outside of the guide shaft 630, and a sensing chamber 622 is defined between the guide cylinder 621 and the guide shaft 630. A through hole is opened on the peripheral wall of the sensing chamber 622, and a rotating ring is sleeved on the guide cylinder 621. A plurality of first connecting tubes 623 are evenly connected to the rotating ring along the circumferential direction. The accommodating groove 220 is connected to the sensing chamber 622 in sequence through the first connecting tube 623, the rotating ring and the through hole; the first connecting tube 623 is a hose, so as to adapt to the up and down movement of the guide cylinder 621 relative to the bracket 610; the accommodating groove 220 includes a first groove 221 and a second groove 222 that are connected; the first groove 221 is vertically arranged; the second groove 222 extends along the radial direction of the drilling tube 200, the outer end of the second groove 222 is connected to the lower end of the first groove 221, and the inner end is connected to the accommodating chamber 210; in the initial state, the cutting knife 710 is located in the second groove 222; the second groove 222 can accommodate at least two connecting blocks 730;

[0061] The connecting component 740 has a locked state and an unlocked state. When the connecting component 740 is in the locked state, the two connecting blocks 730 connected by the connecting component 740 or the connecting block 730 and the cutting knife 710 are fixed. When the connecting component 740 is in the unlocked state, the two connecting blocks 730 connected by the connecting component 740 or the connecting block 730 and the cutting knife 710 can rotate relative to each other. A switching member is installed at the inner end of the second groove 222, and the switching member is used to switch the state of the connecting component 740.

[0062] During the upward movement of the sensing block 620 relative to the guide shaft 630, the gas in the sensing chamber 622 flows into the receiving groove 220 above the reaction block 720 through the first connecting pipe 623. Under the action of the gas pressure, the reaction block 720 moves downward, and the cutting knife 710 is pushed to move radially along the drilling tube 200 through the connecting assembly 740 and the connecting block 730. When the connecting assembly 740 is located in the first groove 221 and the second groove 222, it is in an unlocked state, and the two connecting blocks 730 connected thereto or the connecting block 730 and the cutting knife 710 can rotate relative to each other, thereby ensuring that the connecting block 730 can smoothly move from the first groove 221 to the second groove 222; when the connecting block 730 moves into the second groove 222, the connecting block 730 and the cutting knife 710 are in a state of being unlocked. 0 or the angle between two adjacent connecting blocks 730 is a straight angle, and when the connecting assembly 740 moves to the inner end of the second groove 222, the switching member switches the connecting assembly 740 to a locked state, so that the angle between the cutting knife 710 and the connecting block 730 connected to the connecting assembly 740 or between two adjacent connecting blocks 730 remains unchanged, so that the cutting knife 710 can still move along the radial direction of the drilling tube 200 after extending out of the second groove 222; when the length of the sample core 300 in the accommodating chamber 210 reaches a preset value, that is, after the sensing block 620 moves upward by a preset distance relative to the guide shaft 630 and the reaction block 720 moves downward by a preset distance, the cutting knife 710 extends out of the second groove 222 by a preset distance, thereby cutting off the position where the sample core 300 is connected to the surface.

[0063] Under the action of the reset assembly and the gravity of the sample core 300, the sensing block 620 moves downward relative to the guide shaft 630. Under the action of the gas flow, the reaction block 720 moves upward, pulling the connecting block 730. After the connecting assembly 740 contacts the switching member, the connecting assembly 740 switches to the unlocked state, and the connecting block 730 can enter the first groove 221 through the second groove 222 to restore the initial state. At the same time, the wrapping mechanism releases the wrapping of the sample core 300, and the sample core 300 is separated from the drilling tube 200 under the push of its own gravity and the sensing block 620, completing the sampling work.

[0064] In a further embodiment, Fig.11 , Fig.12 and Fig.13 As shown, the connecting assembly 740 includes a first sleeve 741, a second sleeve 742, a locking shaft 743 and a sliding block 745; two of each of the second sleeve 742, the locking shaft 743 and the sliding block 745 are provided;

[0065] The first sleeve 741 is arranged at one end of the cutting knife 710 and the connecting block 730 close to the reaction block 720; the two second sleeves 742 are arranged at one end of the connecting block 730 and the reaction block 720 close to the cutting knife 710, the two second sleeves 742 are coaxial and spaced apart in the axial direction, and the distance between the two second sleeves 742 is not less than the length of the first sleeve 741; the first sleeve 741 is respectively provided with a locking shaft 743 at both ends of the two second sleeves 742; the locking shaft 743 is coaxially arranged with the first sleeve 741 and the second sleeve 742, and can only move axially relative to the first sleeve 741 and the second sleeve 742; a spline is arranged on the peripheral wall of the locking shaft 743, and a corresponding spline is arranged on the inner wall of the first sleeve 741 The second sleeve 742 is provided with a spline groove at one end facing the first sleeve 741. When the angle between the cutting knife 710 and the connecting block 730 or two adjacent connecting blocks 730 is a flat angle, the spline grooves on the first sleeve 741 and the second sleeve 742 are aligned; the ends of the two locking shafts 743 away from each other are fixedly connected to the rotating shaft 744, and the second sleeve 742 can rotate relative to the rotating shaft 744; each locking shaft 743 is fixedly connected to a sliding block 745, and the sliding block 745 can be movably installed on the cutting knife 710 or the connecting block 730 along the axial direction of the locking shaft 743; the cutting knife 710 or the connecting block 730 is provided with a locking groove 746 for the sliding block 745 to move; when the connecting assembly 740 is in the unlocked state, refer to Fig.13 , the locking shaft 743 is located in the first sleeve 741, the rotating shaft 744 is located in the second sleeve 742, and the sliding block 745 is located in the cutting knife 710 or the connecting block 730; when the connecting assembly 740 is in the locked state, refer to Fig.12 , the locking shaft 743 is partially located in the first sleeve 741 and partially located in the second sleeve 742, the sliding block 745 extends out of the cutting knife 710 or the connecting block 730 by a preset distance; a distance adjustment structure is provided between the two sliding blocks 745, and the distance adjustment structure is used to make the two sliding blocks 745 move away from each other and extend the cutting knife 710 or the connecting block 730; the distance adjustment structure can be a spring or a magnet; when the distance adjustment structure is a magnet, the magnetism of the sides close to each other is the same;

[0066] The switching member is a wedge block 223, see Fig.10 There are two wedge blocks 223, which are symmetrically arranged about the axis of the second groove 222, fixedly installed on both sides of the inner end of the second groove 222, and the distance between the inner ends of the two wedge blocks 223 is smaller than the distance between the outer ends.

[0067] During the upward movement of the sensing block 620 relative to the guide shaft 630, the gas in the sensing chamber 622 flows into the receiving groove 220 above the reaction block 720 through the first connecting pipe 623. Under the action of the gas pressure, the reaction block 720 moves downward, and the cutting knife 710 is pushed to move radially along the drilling tube 200 through the connecting assembly 740 and the connecting block 730. When the connecting assembly 740 is located in the first groove 221 and the second groove 222, it is in an unlocked state, and the locking shaft 743 is located in the first sleeve 741. The rotating shaft 744 is located in the second sleeve 742, and the sliding block 745 is located in the cutting knife 710. At this time, the second sleeve 742 can rotate axially relative to the first sleeve 741; that is, the connecting block 730 and the cutting knife 710 can rotate relative to each other, thereby ensuring that the connecting block 730 can smoothly move from the first groove 221 to the second groove 222; when the connecting block 730 moves into the second groove 222, the angle between the connecting block 730 and the cutting knife 710 is a flat angle, and when the two sliding blocks 745 are respectively connected to the two wedges After the wedge block 223 contacts, the two sliding blocks 745 gradually move away from each other, extending the cutting knife 710. When the sliding block 745 moves, the two locking shafts 743 move away from each other. One end of the locking shaft 743 connected to the rotating shaft 744 extends into the second shaft sleeve 742. Since the locking shaft 743 can only move axially relative to the second shaft sleeve 742, the angle between the cutting knife 710 and the connecting block 730 is locked and remains unchanged. After the second connecting assembly 740 from bottom to top contacts the wedge block 223, the second connecting assembly 740 from bottom to top moves from bottom to top. The angle between the second connecting block 730 and the third connecting block 730 on the drilling tube 200 is locked, and so on; so that the cutting knife 710 can still move radially along the drilling tube 200 after extending out of the second groove 222; when the length of the sample core 300 in the accommodating chamber 210 reaches a preset value, that is, the sensing block 620 moves upward by a preset distance relative to the guide shaft 630, and the reaction block 720 moves downward by a preset distance, the cutting knife 710 extends out of the second groove 222 by a preset distance, thereby cutting off the position where the sample core 300 is connected to the surface.

[0068] After the sample core 300 is cut off, under the action of the reset assembly and the gravity of the sample core 300 itself, the sensing block 620 moves downward relative to the guide shaft 630. Under the action of the gas flow, the reaction block 720 moves upward, pulling the connecting block 730 upward. After the connecting block 730 enters the second groove 222 by a preset distance, the sliding block 745 abuts against the wedge block 223. Since the distance between the inner ends of the wedge blocks 223 is smaller than the distance between the outer ends, and the sliding block 745 moves from the inner end to the outer end of the wedge block 223, the two sliding blocks 745 gradually approach each other. As the two sliding blocks 745 approach each other, , driving the two locking shafts 743 to approach each other axially. When the sliding block 745 is out of contact with the wedge block 223, the locking shaft 743 is completely located in the first sleeve 741, and the rotating shaft 744 is located in the second sleeve 742. At this time, the second sleeve 742 can rotate relative to the first sleeve 741, that is, the angle between the two adjacent connecting blocks 730 or the connecting block 730 and the cutting knife 710 is no longer locked, and the two can rotate relative to each other, so that they can enter the first groove 221 from the second groove 222. When the sample core 300 is separated from the drilling tube 200, the cutting mechanism returns to its initial state.

[0069] In a further embodiment, Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the wrapping mechanism includes a plurality of wrapping units 800, which are evenly distributed along the circumference of the drilling tube 200, and the wrapping units 800 are arranged in a one-to-one correspondence with the cutting units 700; as the cutting knife 710 moves relative to the sample core 300, the cutting knife 710 cuts a wrapping groove on the sample core 300, and the wrapping units 800 are filled into the wrapping groove.

[0070] During the drilling and sampling process, after the multiple cutting knives 710 cut out wrapping grooves on the outer surface of the sample core 300, the multiple wrapping units 800 are promptly filled into the corresponding wrapping grooves to prevent the sample core 300 from being broken due to the vibration of the drilling tube 200 during the drilling and sampling process. By setting up multiple wrapping units 800, the wrapping effect is further optimized, thereby ensuring the integrity of the sample core 300 after the sampling is completed. Moreover, during the drilling and sampling process, the wrapping grooves gradually approach the axis of the sample core 300 from top to bottom. On the premise that the sample core 300 can be cut off after the sample core 300 extends into the drilling tube 200 by a preset length, the dispersed wrapping units 800 are subjected to the pressure of the sample core 300 when the cut sample core 300 is taken out of the rock and soil geology, thereby preventing the sample core 300 from loosening and breaking due to excessive force on the bottom, thereby further improving the integrity of the sample core 300.

[0071] In a further embodiment, Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the wrapping unit 800 includes a plurality of airbag balls 810 and a plurality of second connecting tubes 820; the plurality of airbag balls 810 and the plurality of second connecting tubes 820 are alternately arranged and interconnected; the second connecting tube 820 is a hose and can be deformed;

[0072] The bracket 610 is provided with a plurality of winding assemblies, and the winding assemblies are arranged one by one with the wrapping unit 800, and the winding assemblies are used to roll up the wrapping unit 800; in the initial state, a part of the wrapping unit 800 is rolled up with the winding assemblies, and the other part is tensioned in the accommodating chamber 210; the airbag ball 810 at the bottom is connected with the part of the cutting knife 710 extending out of the second slot 222; refer to Figure 4 , Figure 6 The winding assembly includes a winding wheel 830 and a winding torsion spring. The axis of the winding wheel 830 is horizontally arranged. The winding wheel 830 can be rotatably installed on the bracket 610 around its own axis. The wrapping assembly is wound with the winding wheel 830. The two ends of the winding torsion spring are respectively connected to the winding wheel 830 and the second connecting tube 820 at the upper end of the corresponding wrapping assembly. The winding torsion spring makes the wrapping unit 800 tend to be wound on the winding wheel 830.

[0073] Reference Figure 6 The wrapping unit 800 is connected with a ventilation assembly, which is used to fill gas into the wrapping unit 800 or reduce the gas in the wrapping unit 800. The ventilation assembly includes an air pump and a ventilation pipe 840, and the ventilation pipe 840 connects the air pump and a plurality of uppermost second connecting pipes 820.

[0074] During the drilling process, the cutting knife 710 continuously moves inward along the radial direction of the drilling tube 200. When the cutting knife 710 moves, it drives the lowermost airbag ball 810 to move synchronously. As the cutting knife 710 moves downward, the lowermost airbag ball 810 drives the airbag ball 810 above it to move through the second connecting tube 820, and the wrapping unit 800 on the winding assembly is continuously released; after the cutting knife 710 cuts a wrapping groove on the surface of the sample core 300, the lowermost airbag ball 810 is filled into the newly cut wrapping groove. It is enough to make it inflate. There is a gap between the airbag ball 810 and the wrapping groove, so the airbag ball 810 can move smoothly in the wrapping groove. When the cutting knife 710 cuts off the bottom of the sample core 300, the lower ends of the multiple wrapping units 800 are located at the lower end of the sample core 300; at this time, the ventilation component is started to fill gas into the second connecting tube 820 and the airbag ball 810. After filling with gas, the airbag ball 810 expands, and the gap between the airbag ball 810 and the wrapping groove is filled. While the vertical driving mechanism 400 drives the drilling tube 200 to move upward, the wrapping unit 800 lifts the sample core 300. After the sample core 300 is separated from the rock and soil surface, the gas in the airbag ball 810 and the second connecting tube 820 is extracted through the ventilation component, and a gap appears between the airbag ball 810 and the wrapping groove. Under the action of the reset component and the sample core 300's own gravity, the sensing block 620 moves downward relative to the guide shaft 630. Under the action of the gas flow, the reaction block 720 moves upward, pulling the connecting block 730 through the second groove 222 into the first groove 221 to restore the initial state. At the same time, the winding component winds up the wrapping component, thereby releasing the wrapping of the sample core 300. The sample core 300 is separated from the drilling tube 200 under the push of its own gravity and the sensing block 620, completing the sampling work.

[0075] In a further embodiment, referring to Figure 4 , Figure 6 The guide shaft 630 is coaxially arranged with the drilling tube 200, and a spiral guide groove 631 is provided on the guide shaft 630, and the pitch of the guide groove 631 gradually increases from top to bottom; a corresponding guide strip is provided on the inner wall of the guide tube 621, and the guide strip is installed in the guide groove 631; the bracket 610 can rotate around the axis of the drilling tube 200 relative to the drilling tube 200; the rotating ring can be rotatably installed on the guide tube 621.

[0076] During the drilling process, the induction block 620 moves upward relative to the guide shaft 630. Under the threaded cooperation of the guide bar and the guide groove 631, the guide shaft 630 rotates counterclockwise around its own axis, and the guide cylinder 621 is subjected to a clockwise reverse force, and the force is transmitted to the sample core 300 through the limiting protrusion 624, thereby preventing the sample core 300 from twisting off during the sampling process; and the rotation of the guide shaft 630 drives the bracket 610 to rotate synchronously, and the cutting knife 710 cuts the sample core 300 in cooperation with the downward movement of the bracket 610. A spiral wrapping groove is cut on the outer surface, and the pitch of the wrapping groove gradually decreases from top to bottom, so that at the lower part of the sample core 300 where the force is greater, the distance between the upper and lower wrapping units 800 is smaller, thereby further optimizing the wrapping effect and ensuring the integrity of the sample core 300, and the spiral wrapping groove gradually approaches the axis of the sample core 300 from top to bottom, further dispersing the pressure of the sample core 300 on the wrapping unit 800, avoiding the loosening and breakage of the sample core 300 due to excessive force on the bottom, and further improving the integrity of the sample core 300.

[0077] In a further embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the vertical drive mechanism 400 includes a moving frame 420, a vertical pole 410, a first motor 440, a driving rod 430 and a synchronous frame 450; the vertical pole 410 is vertically arranged and fixedly connected to the frame 100, and the moving frame 420 is mounted on the vertical pole 410 so as to be movable up and down; the drilling tube 200 is rotatably mounted on the moving frame 420; the driving rod 430 is rotatably mounted on the frame 100, and the driving rod 430 is connected to the output end of the first motor 440; the moving frame 420 and the driving rod 430 are connected to each other. 0 threaded fit; both ends of the synchronous frame 450 are fixedly connected to the mobile frame 420 and the bracket 610 respectively; after starting the first motor 440, the first motor 440 drives the driving rod 430 to rotate synchronously. Since the driving rod 430 and the mobile frame 420 are threadedly matched, when the driving rod 430 rotates, the mobile frame 420 moves downward along the vertical rod 410, driving the drilling tube 200 to move downward synchronously. At the same time, the bracket 610 is driven by the synchronous frame 450 to move downward synchronously with the drilling tube 200;

[0078] The circumferential drive mechanism 500 includes a second motor 510, a driving wheel 520 and a driven wheel 530; the second motor 510 is installed on the mobile frame 420, the driving wheel 520 is connected to the output end of the second motor 510, the driven wheel 530 is synchronously connected to the drilling tube 200, and the driven wheel 530 is meshed with the driving wheel 520. After the second motor 510 is started, the second motor 510 drives the driving wheel 520 to rotate, the driving wheel 520 drives the driven wheel 530 to rotate, and then drives the drilling tube 200 to rotate around its own axis.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rock and soil detection sampling device, characterized in that: include: Rack, horizontal setting; The inner wall of the drilling tube defines a receiving cavity for receiving the sample core; the drilling tube can be moved up and down and rotatably installed on the frame, and a drill bit is fixedly connected to the lower end of the drilling tube; A vertical driving mechanism is installed on the frame and connected to the drilling tube. The vertical driving mechanism is used to drive the drilling tube to move vertically. As the drilling tube moves downward, the length of the sample core in the accommodating chamber gradually increases. The circumferential drive mechanism is installed on the frame and connected to the drilling tube. The circumferential drive mechanism is used to drive the drilling tube to rotate around its own axis; The induction component comprises a bracket and an induction block. The bracket is arranged in the drilling tube, and the bracket moves up and down synchronously with the drilling tube. A receiving groove is provided at the lower end of the bracket, and the bottom of the receiving groove is communicated with the receiving cavity. The bracket is fixedly connected with a guide shaft, and the induction block is installed on the guide shaft so as to be movable up and down. In the initial state, the lower surface of the induction block is flush with the lower surface of the drilling tube. The induction component is installed inside the drilling tube and is used to sense the length of the sample core in the receiving cavity. A reset structure is directly provided on the upper surface of the induction block and the guide shaft, and the reset structure has a tendency to make the induction block move away from the guide shaft. A cutting mechanism is installed at the lower part of the drilling tube, and is used to cut off the connection between the sample core and the ground surface when the length of the sample core in the accommodating cavity reaches a preset value; the cutting mechanism includes a plurality of cutting units, and the plurality of cutting units are evenly distributed along the circumference of the drilling tube; The cutting unit comprises a cutting knife, a reaction block, a plurality of connection blocks and a plurality of connection components; the plurality of connection blocks are arranged at intervals in the receiving groove; the reaction block is located above the uppermost connection block; between two adjacent connection blocks, the cutting knife and the lowermost connection block are connected by a connection component; the uppermost connection block and the reaction block are hinged; The upper end of the induction block is fixedly connected with a guide cylinder, which is sleeved on the outside of the guide shaft, and a sensing cavity is defined between the guide cylinder and the guide shaft, and the receiving groove is connected with the sensing cavity through a first connecting pipe, and the first connecting pipe is a hose; the receiving groove includes a first groove and a second groove which are connected; the first groove is vertically arranged; the second groove extends along the radial direction of the drilling tube, the outer end of the second groove is connected with the lower end of the first groove, and the inner end is connected with the receiving cavity; the cutting knife is located in the second groove in the initial state; The connecting assembly has a locked state and an unlocked state. When the connecting assembly is in the locked state, the two connecting blocks connected by the connecting assembly or the connecting block and the cutting knife are fixed. When the connecting assembly is in the unlocked state, the two connecting blocks connected by the connecting assembly or the connecting block and the cutting knife can rotate relative to each other. A switching member is installed at the inner end of the second groove, and the switching member is used to switch the state of the connecting assembly. The connecting assembly includes a first shaft sleeve, a second shaft sleeve, a locking shaft and a sliding block; two of each of the second shaft sleeve, the locking shaft and the sliding block are provided; The first sleeve is arranged at one end of the cutting knife and the connecting block close to the reaction block; the two second sleeves are arranged at one end of the connecting block and the reaction block close to the cutting knife, the two second sleeves are coaxial and arranged at intervals along the axial direction, and the distance between the two second sleeves is not less than the length of the first sleeve; the first sleeve is respectively installed with a locking shaft towards both ends of the two second sleeves; the locking shaft is coaxially arranged with the first sleeve and the second sleeve, and can only move axially relative to the first sleeve and the second sleeve; the ends of the two locking shafts away from each other are fixedly connected to a rotating shaft, and the second sleeves can rotate relative to the rotating shaft; each locking shaft is fixedly connected to a sliding block, and the sliding block can be movably installed on the cutting knife or the connecting block along the axial direction of the locking shaft; When the connecting assembly is in an unlocked state, the locking shaft is located in the first shaft sleeve, the rotating shaft is located in the second shaft sleeve, and the sliding block is located in the cutting knife or the connecting block; When the connecting assembly is in a locked state, the locking shaft is partially located on the first sleeve and partially located on the second sleeve, and the sliding block extends out of the cutting knife or the connecting block by a preset distance; a distance adjustment structure is provided between the two sliding blocks, and the distance adjustment structure is used to make the two sliding blocks move away from each other and extend the cutting knife or the connecting block; The wrapping mechanism is installed on the drilling tube. As the length of the sample core in the accommodating cavity increases, the wrapping mechanism wraps around the outer surface and the lower surface of the sample core.

2. A rock and soil detection sampling device according to claim 1, characterized in that: The wrapping mechanism includes a plurality of wrapping units, which are evenly distributed along the circumference of the drilling tube, and the wrapping units are arranged in one-to-one correspondence with the cutting units; as the cutting knife moves relative to the sample core, the cutting knife cuts a wrapping groove on the sample core, and the wrapping units are filled into the wrapping groove.

3. A rock and soil detection sampling device according to claim 2, characterized in that: The wrapping unit includes a plurality of airbag balls and a plurality of second connecting tubes; the plurality of airbag balls and the plurality of second connecting tubes are alternately arranged and interconnected; the second connecting tube is a flexible tube and can be deformed; A plurality of winding assemblies are arranged on the bracket, and the winding assemblies are arranged one-to-one corresponding to the wrapping units, and the winding assemblies are used to wind up the wrapping units; in an initial state, a part of the wrapping unit is rolled up with the winding assembly, and the other part is tensioned in the accommodating cavity; the airbag ball at the lower end is connected to the part of the cutting knife extending out of the second groove; the wrapping unit is connected to a ventilation assembly, and the ventilation assembly is used to fill gas into the wrapping unit or reduce the gas in the wrapping unit.

4. A rock and soil detection sampling device according to claim 3, characterized in that: The winding assembly includes a winding wheel and a winding torsion spring, the axis of the winding wheel is horizontally arranged, and the winding wheel can be rotatably installed on the bracket around its own axis; the wrapping assembly is wound with the winding wheel, and the two ends of the winding torsion spring are respectively connected to the winding wheel and the second connecting tube at the top of the corresponding wrapping assembly, and the winding torsion spring makes the wrapping unit tend to be wound on the winding wheel; the ventilation assembly includes an air pump and a ventilation pipe, and the ventilation pipe connects the air pump and multiple second connecting tubes at the top.

5. A rock and soil detection sampling device according to claim 2, characterized in that: The guide shaft is coaxially arranged with the drilling tube, a spiral guide groove is provided on the guide shaft, a corresponding guide strip is provided on the inner wall of the guide tube, and the guide strip is installed in the guide groove; the bracket can rotate relative to the drilling tube around the axis of the drilling tube.

6. A rock and soil detection sampling device according to claim 5, characterized in that: The pitch of the guide groove increases gradually from top to bottom.

7. A rock and soil detection sampling device according to claim 1, characterized in that: The vertical driving mechanism comprises a moving frame, a vertical pole, a first motor, a driving rod and a synchronous frame; the vertical pole is vertically arranged and fixedly connected to the frame, and the moving frame is installed on the vertical pole so as to be movable up and down; the drilling tube is rotatably installed on the moving frame; the driving rod is rotatably installed on the frame, and the driving rod is connected to the output end of the first motor; the moving frame is threadedly matched with the driving rod; the two ends of the synchronous frame are respectively fixedly connected to the moving frame and the bracket; The circumferential driving mechanism includes a second motor, a driving wheel and a driven wheel; the second motor is installed on the mobile frame, the driving wheel is connected to the output end of the second motor, the driven wheel is synchronously rotatably connected to the drilling tube, and the driven wheel is meshed with the driving wheel.

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