Sample extraction equipment for geotechnical engineering

Abstract

The invention relates to the technical field of soil sampling equipment, in particular to geotechnical engineering sample extraction equipment which comprises a power device, the power device is in transmission connection with a trepanning device, the trepanning device comprises a drill rod, the drill rod is in transmission connection with the power device, and a drill bit is installed at the end, away from the power device, of the drill rod; a mounting cavity penetrating through the side wall of the drill rod is formed in the drill rod, a soil cutting assembly corresponding to the mounting cavity is mounted on the drill rod, and a soil taking assembly corresponding to the soil cutting assembly is cooperatively mounted in the mounting cavity. According to the soil sampling device, samples can be completely stored during soil sampling, damage and loss of the samples in the extraction process are reduced, the integrity of the samples is guaranteed, a reliable data basis is provided for subsequent geotechnical engineering analysis, and the detection result is more scientific and representative.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sampling equipment, and particularly to a sample extraction device for geotechnical engineering. Background Art

[0002] In the professional field of geotechnical engineering, which is deeply integrated with the geological environment, accurate and high-quality sample extraction is the cornerstone of engineering construction, and its importance runs through key links such as the entire process of engineering design, construction, and subsequent geological analysis. The physical and mechanical properties contained in soil samples directly determine the safety, stability, and durability of engineering structures, and any slight deviation will affect the engineering quality. Currently, most of the sampling devices commonly used in the geotechnical engineering industry rely on the reciprocating motion of a driving member to drive a sampling cylinder to complete the sampling work. The operation process of such devices is usually to first forcefully insert the sampling cylinder into the soil layer and then pull it out to obtain samples. However, in the actual operation process, this method lacks a scientific and reasonable separation mechanism. In order to enable the soil sample to separate from the surrounding soil, when inserting the sampling cylinder, the side wall of the sampling cylinder will generate a large extrusion force and friction force on the soil sample; when pulling out the sampling cylinder, it is also very difficult to ensure the effective separation of the soil to be sampled from the surrounding soil, resulting in uneven cross-sections of the soil sample in the sampling cylinder during separation. Finally, the structure of the soil sample retained in the sampling cylinder is severely damaged, unable to truly reflect the soil characteristics of the original stratum, and thus affecting the accurate determination of subsequent engineering parameters and the scientific design of engineering plans.

[0003] Therefore, how to protect the integrity of soil samples during the sampling process is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In order to protect the integrity of soil samples during the sampling process, the present application provides a sample extraction device for geotechnical engineering.

[0005] The sample extraction device for geotechnical engineering provided by the present application adopts the following technical solutions: A sample extraction device for geotechnical engineering includes a power device, on which an opening device is drivingly connected. The opening device includes a drill rod, the drill rod is drivingly connected to the power device, and a drill bit is installed at one end of the drill rod away from the power device; an installation cavity penetrating through its side wall is formed inside the drill rod, a soil cutting assembly is installed on the drill rod corresponding to the installation cavity, and a soil sampling assembly is installed in the installation cavity corresponding to the soil cutting assembly in a matching manner.

[0006] By adopting the above technical solution, the soil cutting component first removes the polluted and damaged soil layer on the soil surface to prevent this part of the disturbed soil from mixing into the sample, ensuring that the sample taken is a real sample of the target soil layer. Then the soil to be sampled is completely cut so that the soil taking component can completely collect the sample, reducing the damage and loss of the sample during the extraction process, ensuring the integrity of the sample, providing a reliable data basis for subsequent geotechnical engineering analysis, and making the test results more scientific and representative.

[0007] Furthermore, the soil cutting assembly includes a sleeve, which is slidably mounted on the drill rod, and the sleeve is fixedly connected to a mounting seat extending into the mounting cavity. Two first telescopic parts arranged in parallel are fixedly mounted on the mounting seat near the two sides of the mounting cavity, and a cutting part is fixedly mounted between the telescopic ends of the two first telescopic parts. The sleeve is provided with a storage groove corresponding to the cutting part, and a second telescopic part parallel to the drill rod is fixedly connected to the top of the mounting cavity, and the telescopic end of the second telescopic part is fixedly connected to the mounting seat.

[0008] By adopting the above technical solution, the first telescopic member and the second telescopic member drive the sliding sleeve and the cutting member to first remove the contaminated surface of the soil sample to be sampled, and then cut the sample, which can maximize the integrity of the soil sample to be sampled. At the same time, the design of the storage slot provides a safe storage space for the cutting member. In the non-working state, the cutting member can be stored in the storage slot to avoid contact with external objects, reduce the wear and damage of the cutting edge, and extend the service life of the cutting member.

[0009] Furthermore, the soil sampling assembly includes a soil sampling box, which is slidably connected to the inside of the installation cavity, and a partition is fixedly connected to the inside of the soil sampling box, and the partition divides the soil sampling box into a driving cavity and a soil storage cavity. A sampling box is slidably connected to a position in the soil sampling box corresponding to the soil storage cavity, and a telescopic mechanism is transmission-connected to the bottom of the sampling box in the soil sampling box.

[0010] By adopting the above technical solution, the sampling box is extended from the soil sampling box by means of a telescopic mechanism and cuts into the soil position to be sampled. After sampling, the sampling box is retracted into the soil sampling box by means of the telescopic mechanism. This ensures that during the sampling operation, the soil sample to be sampled can be completely stored in the sampling box, thereby improving the accuracy of the soil sampling operation. The partition ensures that the soil will not fall into the driving cavity, thereby avoiding the occurrence of malfunction of the driving components. At the same time, the soil storage cavity also ensures that the soil sample is kept in a relatively stable storage environment during storage, thereby ensuring the original state of the soil sample.

[0011] Furthermore, the telescopic mechanism includes two first sliders slidably connected to the outer bottom of the sampling box. Corresponding to the first sliders, two second sliders are slidably connected to the inner bottom surface of the soil sampling box. Two lifting rods arranged in a cross shape are hinged between the first slider and the second slider, and the middle parts of the two lifting rods are hinged to each other. A first motor is fixedly installed in the drive cavity, and a support plate is fixedly installed inside the drive cavity. The drive shaft of the first motor penetrates through the outer end of the support plate and is installed with a first gear. A driving shaft is rotatably connected to the partition plate. One end of the driving shaft located inside the drive cavity is installed with a second gear corresponding to the first gear, and the first gear meshes with the second gear. One end of the driving shaft located inside the soil storage cavity penetrates through the two second sliders, and helical grooves with opposite helix directions are respectively formed on the driving shaft corresponding to the two second sliders. The driving shaft is in transmission connection with the second sliders through the helical grooves.

[0012] By adopting the above technical solution, the first motor is used to drive the driving shaft to rotate, so that the second slider reciprocally moves on the driving shaft through the helical groove, thereby pushing the lifting rod to enable the sampling box to accurately cut into the position where the soil sample to be sampled is located, improving the accuracy during the soil sampling operation. And through the structure composed of the lifting rods arranged in a cross shape and hinged in the middle, stable support can be provided during the movement of the sampling box, ensuring the smooth progress of the soil sampling operation.

[0013] Furthermore, a storage cavity is formed in the drill rod corresponding to the soil sampling box. The storage cavity is communicated with the installation cavity, and a third telescopic member is fixedly connected inside the storage cavity. The telescopic end of the third telescopic member is fixedly connected to the soil sampling box.

[0014] By adopting the above technical solution, when the third telescopic member contracts, the soil sampling box is pulled into the storage cavity, so that the outer wall of the soil sampling box coincides with the inner wall of the storage cavity, completely protecting the soil sample in the sampling box inside the box body, ensuring that during the operation of the drill rod, the influence of offset vibration on the soil sample is avoided, and further guaranteeing the quality of the soil sample.

[0015] Furthermore, the power device includes a first drive box. A rotating rod is rotatably connected inside the first drive box. A drive cylinder is fixedly sleeved outside the rotating rod. A plurality of helical fins evenly distributed in the circumferential direction are fixedly connected to the outer side surface of the drive cylinder. The rotating rod is in coaxial transmission connection with the drill rod. Input ports and output ports penetrating through the side walls are respectively formed at both ends of the drive cylinder corresponding to the first drive box. The input port and the output port are hermetically connected to a hydraulic circulation system.

[0016] By adopting the above technical solution, the hydraulic circulation system is used to continuously inject high-pressure hydraulic oil into the first drive box. The continuously flowing high-pressure hydraulic oil generates a continuous driving force on the spiral fins, so that the spiral fins continuously push the drive cylinder and the rotating rod to rotate smoothly, thereby providing a stable power output for the drill pipe and ensuring the efficient progress of the hole-opening operation.

[0017] Furthermore, a mounting plate is installed on the first drive box. The rotating rod is rotatably and sealingly connected to the mounting plate. A top cover is installed on the mounting plate. The top cover, the mounting plate and the first drive box are fixedly connected in a sealed manner. An inlet connected to an external water supply device is opened on the top cover. A water storage cavity is formed between the mounting plate and the top cover. A first water flow channel communicating with the water storage cavity is opened inside the rotating rod. A second water flow channel is penetrated through the drill pipe corresponding to the first water flow channel. The second water flow channel avoids the position of the installation cavity. A plurality of water spraying ports communicating with the second water flow channel are opened on the drill bit.

[0018] By adopting the above technical solution, the external water supply device can spray the pressurized water from the water spraying ports on the drill bit through the inlet, the first water flow channel and the second water flow channel. The sprayed water flow can not only quickly and effectively discharge the soil generated by the drill bit during the working process, but also effectively reduce the heat of the drill bit during drilling, reduce the wear of the drill bit, and improve the effective service life of the drill bit; at the same time, the water spraying operation can also moisten the dust generated during drilling at the source, make it settle, reduce the flying of dust in the air, and improve the working environment.

[0019] Furthermore, a moving device is further included. The power device is slidably installed on the moving device. The moving device includes a rotating box. A first guide rail is fixedly installed on the rotating box. A third slider is slidably connected to the first guide rail. The power device is fixedly connected to the third slider; a first screw rod is rotatably connected to the first guide rail. A first threaded hole corresponding to the first screw rod is opened on the third slider. The third slider is in threaded transmission connection with the first screw rod. A second motor is fixedly installed in the rotating box. A first bevel gear is fixedly installed on the driving shaft of the second motor. A second bevel gear is fixedly installed at one end of the first screw rod extending into the rotating box. The first bevel gear and the second bevel gear are meshed with each other.

[0020] By adopting the above technical solution, the second motor is used to drive the first screw rod to start rotating, so as to drive the third slider to reciprocate along the first guide rail, thereby driving the power device and the hole-opening device to accurately control the movement to perform sampling work at the required working depth according to the actual working requirements, improving the applicability and flexibility of the extraction equipment.

[0021] Further, it further includes an orientation device. The moving device is rotatably connected to the orientation device. The orientation device includes a fixed seat. The rotating box is rotatably connected to one end of the fixed seat. A second guide rail is fixedly installed on the fixed seat. A fourth slider is slidably connected to the second guide rail. A second threaded hole is formed in the fourth slider. A second screw rod is rotatably connected to the fixed seat. The second screw rod passes through the second threaded hole and is in threaded transmission connection with the fourth slider. A third motor is installed at one end of the fixed seat away from the rotating box. The drive shaft of the third motor is in transmission connection with the second screw rod. A third telescopic member is rotatably connected to the fourth slider. The telescopic end of the third telescopic member is rotatably connected to the first guide rail.

[0022] By adopting the above technical solution, the third motor is used to drive the second screw rod to rotate, so as to drive the fourth slider to make reciprocating movement along the second guide rail. And through the cooperation with the rotation of the rotating box on the fixed seat, different orientation angles of the hole-opening device are realized, meeting the precise requirements for the drilling direction in different working scenarios.

[0023] Further, a number of drilling blocks are arranged on the drill bit in a centrosymmetric distribution. A first chip removal groove is arranged in a spiral shape on the drill rod corresponding to the drilling blocks. A sliding part for disconnecting the first chip removal groove is arranged on the drill rod corresponding to the working position of the sliding sleeve. A second chip removal groove for connecting the first chip removal groove is arranged on the sliding sleeve.

[0024] By adopting the above technical solution, the spiral first chip removal groove forms multiple spiral paths on the drill rod. During the drilling operation, the power of the rotating drill rod can quickly discharge the crushed soil along the spiral paths on the outer side of the drill rod from the drilling area, reducing the accumulation of crushed soil in the drill hole, reducing the cutting resistance of the drill bit, and improving the drilling efficiency.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: In the present application, the soil cutting component adopts a cooperative control structure of double telescopic members. The second telescopic member drives the sliding sleeve to move axially along the drill rod, and the first telescopic member precisely controls the extending length of the cutting member to achieve flexible soil cutting operation. When reaching the position of the soil sample to be sampled, first cut off the surface soil that has been damaged and contaminated by the cutting member, and then penetrate into the soil to cut out the soil sample to be sampled completely. Then, through the cooperation of the soil sampling component and the telescopic mechanism, the soil sample to be sampled is accurately received into the sampling box, ensuring the original state and sample quality of the soil sample, and providing more accurate and reliable data for subsequent soil analysis. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 It is a partial structural decomposition diagram of an embodiment of the present application.

[0028] Figure 3 It is a partial structural decomposition diagram of an embodiment of the present application.

[0029] Figure 4 It is an internal structural diagram of an embodiment of the present application.

[0030] Figure 5 It is an internal structural diagram of an embodiment of the hole-opening device in the present application.

[0031] Figure 6 It is a structural decomposition diagram of an embodiment of the soil-taking component in the present application.

[0032] Figure 7 It is a structural decomposition diagram of an embodiment of the soil-cutting component in the present application.

[0033] Figure 8 is Figure 4 the enlarged view of the structure of Part Ⅰ in

[0034] Figure 9 It is a structural decomposition diagram of an embodiment of the telescopic mechanism in the present application.

[0035] Description of reference numerals in the drawings: 100, power unit; 101, first drive box; 102, rotating rod; 103, drive cylinder; 104, spiral blade; 105, input port; 106, output port; 200, hole-opening device; 201, drill pipe; 202, drill bit; 203, installation cavity; 204, mounting plate; 205, top cover; 206, water inlet; 207, water storage cavity; 208, first water flow channel; 209, second water flow channel; 210, water spray port; 211, extension rod; 300, soil cutting assembly; 301, sliding sleeve; 302, mounting seat; 303, first telescopic member; 304, cutting member; 305, storage groove; 306, second telescopic member; 400, soil sampling assembly; 401, soil sampling box; 402, partition; 403, drive cavity; 404, soil storage cavity; 405, sampling box; 406, second telescopic member; 407, storage cavity; 500, telescopic mechanism; 501, first slider; 502, second slider; 503, lifting rod; 504, first motor; 505, frame plate; 506, first gear; 507, driving shaft; 508, second gear; 509, third threaded hole; 510, spiral groove; 600, moving device; 601, rotating box; 602, first guide rail; 603, third slider; 604, first screw rod; 605, first threaded hole; 606, second motor; 607, first bevel gear; 608, second bevel gear; 700, orientation device; 701, fixed seat; 702, second guide rail; 703, fourth slider; 704, second threaded hole; 705, second screw rod; 706, third motor; 707, third telescopic member; 2021, drilling block; 2011, first chip removal groove; 2012, sliding part; 3011, second chip removal groove. Detailed implementation manners

[0036] The following is further described in detail in conjunction with the attached Figure 1-9 drawings to this application.

[0037] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0039] The embodiment of the present application discloses a sample extraction device for geotechnical engineering.

[0040] Please refer to Figures 1 to 9 , in an embodiment of the present application, a sample extraction device for geotechnical engineering includes a power device 100. A hole-opening device 200 is drivingly connected to the power device 100. The hole-opening device 200 includes a drill pipe 201. The drill pipe 201 is drivingly connected to the power device 100. A drill bit 202 is installed at one end of the drill pipe 201 away from the power device 100. An installation cavity 203 penetrating through its side wall is formed inside the drill pipe 201. A soil-cutting component 300 is installed on the drill pipe 201 corresponding to the installation cavity 203. A soil-sampling component 400 is installed in the installation cavity 203 in cooperation with the soil-cutting component 300.

[0041] During the working process, the power device 100 is started to transmit power to the drill pipe 201 of the hole-opening device 200. The drill pipe 201 starts to rotate under the drive of the power device 100, and then drives the drill bit 202 installed at one end of it to rotate, so as to perform a hole-opening operation on the soil and gradually penetrate to a predetermined depth.

[0042] When reaching the predetermined depth, the power device 100 is turned off, and the soil-cutting component 300 is started. The soil-cutting component 300 first cuts off the surface contaminated and damaged soil layer of the soil sample to be sampled, and then penetrates deeper. After cutting the soil sample to be sampled completely, the soil-sampling component 400 is started to extend into the soil layer to be sampled to completely collect the soil sample.

[0043] Please refer to Figures 1 to 9 , in an embodiment of the present application, the soil-cutting component 300 includes a sliding sleeve 301. The sliding sleeve 301 is slidably sleeved on the drill pipe 201. An installation seat 302 extending into the installation cavity 203 is fixedly connected inside the sliding sleeve 301. Two first telescopic members 303 arranged in parallel are fixedly installed on the installation seat 302 near both sides of the installation cavity 203. A cutting member 304 is fixedly installed between the telescopic ends of the two first telescopic members 303. The sliding sleeve 301 is provided with a receiving groove 305 corresponding to the cutting member 304. A second telescopic member 306 parallel to the drill pipe 201 is fixedly connected to the top end of the installation cavity 203. The telescopic end of the second telescopic member 306 is fixedly connected to the installation seat 302.

[0044] During the working process, first, the second telescopic member 306 contracts to expose the installation cavity 203. Then, the two first telescopic members 303 extend. After pushing the cutting member 304 out of the receiving groove 305 of the sliding sleeve 301, the second telescopic member 306 extends again, driving the sliding sleeve 301 to slide downward on the drill pipe 201, and then driving the cutting member 304 to move downward, so as to cut and remove the damaged and contaminated soil on the upper surface of the soil sample to be sampled. Subsequently, the installation cavity 203 is closed, and the damaged and contaminated soil also falls outside the installation cavity 203. Then, the two first telescopic members 303 extend again. After the cutting member 304 is completely cut into the soil sample to be sampled, the second telescopic member 306 contracts, driving the sliding sleeve 301 to slide upward on the drill pipe 201, and then driving the cutting member 304 to move upward. Then, the two first telescopic members 303 are completely retracted, and the cutting member 304 is withdrawn from the soil into the receiving groove 305 of the sliding sleeve 301, so as to cut the soil sample to be sampled intact.

[0045] Please refer to Figures 1 to 9 , in an embodiment of the present application, the soil sampling assembly 400 includes a soil sampling box 401. The soil sampling box 401 is slidably connected inside the installation cavity 203. A partition 402 is fixedly connected inside the soil sampling box 401. The partition 402 divides the soil sampling box 401 into a driving cavity 403 and a soil storage cavity 404. A sampling box 405 is slidably connected inside the soil sampling box 401 at a position corresponding to the soil storage cavity 404. Knife edges are provided around the opening of the sampling box 405 corresponding to the cutting member 304. A telescopic mechanism 500 is drivingly connected at the bottom of the sampling box 405 inside the soil sampling box 401.

[0046] During the working process, when the soil cutting assembly 300 cuts the soil sample to be sampled completely, the telescopic mechanism 500 is started, and the sampling box 405 is extended from the soil sampling box 401 to cut the knife edge into the soil sample to be sampled, so as to completely collect the soil sample to be sampled into the sampling box 405. Subsequently, the telescopic mechanism 500 contracts, and the sampling box 405 is retracted into the soil sampling box 401, thus completing the sampling operation.

[0047] Please refer to Figures 1 to 9, in an embodiment of the present application, the telescopic mechanism 500 includes two first sliders 501 slidably connected to the outer bottom of the sampling box 405. Corresponding to the first sliders 501, two second sliders 502 are slidably connected to the inner bottom surface of the soil sampling box 401. Two cross-set lifting rods 503 are hingedly connected between the first slider 501 and the second slider 502, and the middle parts of the two lifting rods 503 are hingedly connected to each other; a first motor 504 is fixedly installed in the driving cavity 403, a mounting plate 505 is fixedly installed inside the driving cavity 403, and a first gear 506 is installed at the outer end of the driving shaft of the first motor 504 passing through the mounting plate 505; a driving shaft 507 is rotatably connected to the partition plate 402, and a second gear 508 is installed at one end of the driving shaft 507 located inside the driving cavity 403 corresponding to the first gear 506, and the first gear 506 meshes with the second gear 508; one end of the driving shaft 507 located inside the soil storage cavity 404 passes through the two second sliders 502, a third threaded hole 509 is formed in the second slider 502, and helical grooves 510 with opposite helix directions are respectively formed on the driving shaft 507 corresponding to the third threaded holes 509 on the two second sliders 502, and the driving shaft 507 is in transmission connection with the second slider 502 through the helical grooves 510, During the working process, first start the first motor 504. The driving shaft of the first motor 504 drives the first gear 506 to rotate, and then drives the second gear 508 to rotate, so that the driving shaft 507 starts to rotate. When the driving shaft 507 starts to rotate clockwise or counterclockwise, the third threaded holes 509 of the two second sliders 502 move towards or away from each other along the helical grooves 510 with opposite helix directions on the driving shaft 507 respectively, so as to change the crossing angle between the lifting rods 503, thereby realizing the function of the elongation and contraction of the lifting rods 503, and further realizing the reciprocating movement of the sampling box 405 in the soil sampling box 401.

[0048] Please refer to Figures 1 to 9 , in an embodiment of the present application, the drill rod 201 is provided with a storage cavity 407 corresponding to the soil sampling box 401. The storage cavity 407 is communicated with the installation cavity 203, and a third telescopic member 406 is fixedly connected inside the storage cavity 407. The telescopic end of the third telescopic member 406 is fixedly connected to the soil sampling box 401.

[0049] During the working process, after the sampling is completed, the third telescopic member 406 contracts, so as to pull the soil sampling box 401 into the installation cavity 203, so that the inner wall of the storage cavity 407 coincides with the opening of the sampling box 405, and the sampling box 405 is stored in the storage cavity 407, thereby playing a role in protecting the soil sample in the sampling box 405. At the same time, it ensures that when the drill rod 201 is working, the influence of offset vibration on the soil sample is avoided, and the quality of the soil sample is further guaranteed.

[0050] Please refer to Figures 1 to 9, in an embodiment of the present application, the power device 100 includes a first drive box 101. A rotating rod 102 is rotatably connected inside the first drive box 101. An outer drive cylinder 103 is fixedly sleeved outside the rotating rod 102. A plurality of helical fins 104 evenly distributed in the circumferential direction are fixedly connected to the outer side surface of the drive cylinder 103. An internal thread is provided inside the rotating rod 102, and an external thread is provided on the drill rod 201 corresponding to the rotating rod 102. The rotating rod 102 and the drill rod 201 are in coaxial threaded transmission connection. Input ports 105 and output ports 106 penetrating through its side wall are respectively opened at both ends of the first drive box 101 corresponding to the drive cylinder 103. The input port 105 and the output port 106 are hermetically connected to a hydraulic circulation system.

[0051] During the working process, high-pressure hydraulic oil is injected into the first drive box 101 through the hydraulic circulation system, thereby generating a large amount of thrust on the helical fins 104, driving the drive cylinder 103 to rotate, further driving the rotating rod 102 to rotate together, and further driving the drill rod 201 to rotate coaxially.

[0052] Please refer to Figures 1 to 9 , in a specific embodiment of the present application, an extension rod 211 is provided between the rotating rod 102 and the drill rod 201. An external thread is provided at one end of the extension rod 211 corresponding to the rotating rod 102, and the extension rod is in coaxial threaded transmission connection with the rotating rod 102. An internal thread is provided at one end of the extension rod 211 corresponding to the drill rod 201, and the extension rod 211 is in coaxial threaded transmission connection with the drill rod 201. During the working process, when the drilling depth required by the project is greater than the length of the existing drill rod 201, a plurality of extension rods 211 can be fixedly installed on the drill rod 201 according to the actual drilling depth, enabling the equipment to work flexibly under different drilling depths.

[0053] Please refer to Figures 1 to 9 , in an embodiment of the present application, a mounting plate 204 is installed on the first drive box 101. The rotating rod 102 is hermetically and rotatably connected to the mounting plate 204. A top cover 205 is installed on the mounting plate 204. The top cover 205, the mounting plate 204 and the first drive box 101 are hermetically and fixedly connected by bolts. A water inlet 206 connected to an external water supply device is opened on the top cover 205. A water storage cavity 207 is formed between the mounting plate 204 and the top cover 205. A first water flow channel 208 communicating with the water storage cavity 207 is opened inside the rotating rod 102. A second water flow channel 209 is penetrated through the drill rod 201 corresponding to the first water flow channel 208. The second water flow channel 209 avoids the position of the installation cavity 203. A plurality of water spraying ports 210 communicating with the second water flow channel 209 are opened on the drill bit 202.

[0054] During the working process, the external water supply device continuously supplies water to the water storage cavity 207 through the water inlet 206, and the water will continuously pass through the first water flow channel 208 and the second water flow channel 209 and then be sprayed out through the water spray port 210, so that during the drilling operation, the drill bit 202 can be continuously sprayed with water.

[0055] Please refer to Figures 1 to 9 , in an embodiment of the present application, it further includes a moving device 600. The power device 100 is slidably mounted on the moving device 600. The moving device 600 includes a rotating box 601. A first guide rail 602 is fixedly mounted on the rotating box 601. A third slider 603 is slidably connected to the first guide rail 602. The first drive box 101 is fixedly connected to the third slider 603. A first screw 604 is rotatably connected to the first guide rail 602. A first threaded hole 605 corresponding to the first screw 604 is provided on the third slider 603. The third slider 603 is in threaded transmission connection with the first screw 604. A second motor 606 is fixedly mounted inside the rotating box 601. A first bevel gear 607 is fixedly mounted on the drive shaft of the second motor 606. A second bevel gear 608 is fixedly mounted at one end of the first screw 604 extending into the rotating box 601. The first bevel gear 607 and the second bevel gear 608 are meshed with each other.

[0056] During the working process, the second motor 606 is started to drive the first screw 604 to rotate through the first bevel gear 607 and the second bevel gear 608, thereby driving the third slider 603 to linearly move along the first guide rail 602, and thus driving components such as the power device 100 and the hole opening device 200 to move to a suitable working position.

[0057] Please refer to Figures 1 to 9 , in an embodiment of the present application, it further includes an orientation device 700. The moving device 600 is rotatably connected to the orientation device 700. The orientation device 700 includes a fixed seat 701. The rotating box 601 is rotatably connected to one end of the fixed seat 701. A second guide rail 702 is fixedly mounted on the fixed seat 701. A fourth slider 703 is slidably connected to the second guide rail 702. A second threaded hole 704 is provided inside the fourth slider 703. A second screw 705 is rotatably connected to the fixed seat 701. The second screw 705 passes through the second threaded hole 704 and is in threaded transmission connection with the fourth slider 703. A third motor 706 is mounted at one end of the fixed seat 701 away from the rotating box 601. The drive shaft of the third motor 706 is in transmission connection with the second screw 705. A third telescopic member 707 is rotatably connected to the fourth slider 703. The telescopic end of the third telescopic member 707 is rotatably connected to the first guide rail 602.

[0058] During the working process, when it is necessary to adjust the direction of the hole-opening device 200, the third motor 706 is started, which drives the second screw rod 705 to rotate on the fixed seat 701. Then, through the screw drive, the fourth slider 703 slides linearly on the second guide rail 702. When the fourth slider 703 slides, the third telescopic member 707 also moves along with it. At the same time, by controlling the telescopic length of the third telescopic member 707, the rotating box 601 also rotates on the fixed seat 701, thereby realizing the directional adjustment of the orientation angle of the hole-opening device 200.

[0059] Please refer to Figures 1 to 9 , in another embodiment of the present application, the fixed seat 701 can be placed at different positions for operation, such as the ground, a drill rig, etc., which expands the application range of the equipment and improves the practicability of the equipment in different engineering scenarios.

[0060] Please refer to Figures 1 to 9 , in an embodiment of the present application, a plurality of drilling blocks 2021 are arranged on the drill bit 202 in a centrally symmetric distribution. A first chip removal groove 2011 is arranged on the drill pipe 201 in a spiral shape corresponding to the drilling blocks 2021. A sliding portion 2012 that disconnects the first chip removal groove 2011 is arranged on the drill pipe 201 corresponding to the working position of the sliding sleeve 301. A second chip removal groove 3011 that connects the first chip removal groove 2011 is arranged on the sliding sleeve 301.

[0061] During the working process, when the power device 100 drives the drill pipe 201 and the drill bit 202 to rotate for drilling operations, the drilling blocks 2021 of the drill bit 202 come into contact with the soil and cut and break the soil. The broken soil generated during the cutting process is thrown into the first chip removal groove 2011 arranged in a spiral shape on the drill pipe 201 under the action of the centrifugal force generated by the rotation of the drill bit 202 and its own gravity; the second chip removal groove 3011 on the sliding sleeve 301 is connected to the first chip removal groove 2011 on the drill pipe 201. At this time, the broken soil originally in the first chip removal groove 2011 can smoothly enter the second chip removal groove 3011 without affecting the drilling operation.

[0062] Please refer to Figures 1 to 9 , in a specific embodiment of the present application, the drilling blocks 2021 and the drill bit 202 are integrally formed by casting. Drilling edges are arranged on the drilling blocks 2021, which can effectively cut into the rock and soil mass. When the drill bit 202 rotates, the drilling edges come into contact with the surface of the rock and soil and apply a cutting force to break the rock and soil into small pieces, so that it can be more easily guided into the first chip removal groove 2011 on the drill pipe 201, accelerating the hole-opening speed of the sample extraction equipment.

[0063] Please refer to Figures 1 to 9, in a specific embodiment of the present application, the first telescopic member 303 and the second telescopic member adopt electric push rods 406. The structure is simple, the installation and maintenance are convenient, and the telescopic length and speed of the push rod can be accurately controlled by controlling the forward and reverse rotation and speed of the motor. The response speed is fast, and rapid telescopic movements can be achieved. The third telescopic member 707 adopts a hydraulic telescopic cylinder, which can provide a large thrust and can support the operation of the entire power device 100, the hole-opening device 200, and the moving device 600. Moreover, its movement is stable, and the telescopic length and speed can be accurately controlled to ensure the stable operation of the equipment.

[0064] The implementation principle of a sample extraction device for geotechnical engineering in an embodiment of the present application is as follows: First, start the third motor 706 at one end of the fixed seat 701. Its drive shaft drives the second screw rod 705 to rotate, thereby driving the fourth slider 703 to slide on the second guide rail 702. At the same time, the third telescopic member 707 on the fourth slider 703 expands and contracts, pushing the components installed thereon to rotate through the connection point between the rotating box 601 and the fixed seat 701, realizing the directional adjustment of the equipment.

[0065] Then start the power device 100. High-pressure hydraulic oil is injected into the box through the input port 105 by the hydraulic circulation system, pushing the spiral fins 104 on the outer side of the drive cylinder 103, causing the drive cylinder 103 and the rotating rod 102 to rotate. The rotating rod 102 transmits the power coaxially to the drill rod 201, driving the hole-opening device 200 to work. Subsequently, the drill rod 201 rotates under the drive of power, and the drill bit 202 installed at one end thereof rotates accordingly to open a hole in the soil. At the same time, the cutting blocks 2021 on the drill bit 202 start to cut the soil, and the broken soil is discharged through the spiral first chip removal groove 2011 on the drill rod 201.

[0066] And during the hole-opening process, the external water supply device supplies water to the water storage cavity 207 through the water inlet 206 of the top cover 205. The water passes through the first water flow channel 208 of the rotating rod 102 and the second water flow channel 209 of the drill rod 201, and sprays out from the water spray port 210 of the drill bit 202, quickly and effectively discharging the soil generated during the operation of the drill bit 202, and can also play the roles of cooling, reducing dust flying, and lubrication.

[0067] Then start the second motor 606 in the rotating box 601. Its drive shaft drives the first bevel gear 607 to rotate. Through meshing with the second bevel gear 608, the first screw rod 604 rotates. The third slider 603 is in threaded transmission with the first screw rod 604 through the first threaded hole 605 and makes a linear slide on the first guide rail 602, driving the power device 100 fixed thereon to move, so as to move the drill bit to the desired depth.

[0068] When the drilling reaches the predetermined depth, the power device 100 is turned off, the second telescopic member 306 is contracted to expose the installation cavity 203, then the two first telescopic members 303 extend, and after the cutting member 304 is pushed out from the receiving groove 305 of the sliding sleeve 301, the second telescopic member 306 extends again, driving the sliding sleeve 301 to slide downward on the drill pipe 201, and then driving the cutting member 304 to move downward, so as to cut and remove the damaged and contaminated soil on the upper surface of the soil sample to be sampled. Subsequently, the installation cavity 203 is closed, and the damaged and contaminated soil also falls outside the installation cavity 203; then the two first telescopic members 303 extend again, and after the cutting member 304 is completely cut into the soil sample to be sampled, the second telescopic member 306 contracts, driving the sliding sleeve 301 to slide upward on the drill pipe 201, and then driving the cutting member 304 to move upward, and then the two first telescopic members 303 are completely retracted, and the cutting member 304 is retracted from the soil into the receiving groove 305 of the sliding sleeve 301, so as to cut the soil sample to be sampled intact.

[0069] After the soil cutting is completed, the first motor 504 in the driving cavity 403 is started, and its drive shaft drives the first gear 506 to rotate. Through meshing with the second gear 508, the driving shaft 507 rotates. The helical grooves 510 with opposite rotation directions on the driving shaft 507 drive the two second sliders 502 to move towards each other, and drive the first slider 501 and the sampling box 405 to extend through the cross - arranged lifting rods 503, so as to receive the cut soil sample into the sampling box 405. After the receiving is completed, the first motor 504 rotates in reverse to retract the sampling box 405 to its original position, and then the third telescopic member 406 contracts to pull the soil sampling box 401 back into the storage cavity 407 for protective storage.

[0070] Then, the second motor 606 and the third motor 706 are rotated in reverse to reset the equipment, so as to move the drill pipe 201 and the drill bit 202 from the soil to the ground, which is convenient for extracting the collected soil sample.

[0071] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A sample extraction device for geotechnical engineering, characterized in that: It includes a power device (100), and an opening device (200) is drivingly connected to the power device (100). The opening device (200) includes a drill pipe (201), and the drill pipe (201) is drivingly connected to the power device (100). A drill bit (202) is installed at one end of the drill pipe (201) away from the power device (100); an installation cavity (203) penetrating through its side wall is formed inside the drill pipe (201), and a soil cutting component (300) is installed on the drill pipe (201) corresponding to the installation cavity (203), and a soil sampling component (400) is installed in the installation cavity (203) in cooperation with the soil cutting component (300).

2. The soil engineering sample extraction device according to claim 1, characterized in that: The soil cutting component (300) includes a sliding sleeve (301), and the sliding sleeve (301) is slidably sleeved on the drill pipe (201). An installation seat (302) extending into the installation cavity (203) is fixedly connected inside the sliding sleeve (301). Two juxtaposed first telescopic members (303) are fixedly installed on the installation seat (302) near both sides of the installation cavity (203). A cutting member (304) is fixedly installed between the telescopic ends of the two first telescopic members (303). The sliding sleeve (301) is provided with a storage groove (305) corresponding to the cutting member (304). A second telescopic member (306) parallel to the drill pipe (201) is fixedly connected to the top end of the installation cavity (203), and the telescopic end of the second telescopic member (306) is fixedly connected to the installation seat (302).

3. The sample extraction device for geotechnical engineering according to claim 1, wherein: The soil sampling component (400) includes a soil sampling box (401), and the soil sampling box (401) is slidably connected inside the installation cavity (203). A partition plate (402) is fixedly connected inside the soil sampling box (401), and the partition plate (402) divides the soil sampling box (401) into a driving cavity (403) and a soil storage cavity (404). A sampling box (405) is slidably connected inside the soil sampling box (401) corresponding to the position of the soil storage cavity (404). A telescopic mechanism (500) is drivingly connected to the bottom of the sampling box (405) inside the soil sampling box (401).

4. The sample extraction device for geotechnical engineering according to claim 3, characterized in that: The telescopic mechanism (500) includes two first sliders (501) slidably connected to the outer bottom surface of the sampling box (405). Corresponding to the first sliders (501), two second sliders (502) are slidably connected to the inner bottom surface of the soil sampling box (401). Two lifting rods (503) arranged in a cross manner are hingedly connected between the first slider (501) and the second slider (502), and the middle parts of the two lifting rods (503) are hingedly connected to each other. A first motor (504) is fixedly installed in the drive cavity (403), and a support plate (505) is fixedly installed inside the drive cavity (403). A first gear (506) is installed at the outer end of the drive shaft of the first motor (504) passing through the support plate (505). A driving shaft (507) is rotatably connected to the partition plate (402), and a second gear (508) is installed at one end of the driving shaft (507) inside the drive cavity (403) corresponding to the first gear (506). The first gear (506) and the second gear (508) are meshed with each other. One end of the driving shaft (507) inside the soil storage cavity (404) passes through the two second sliders (502), and helical grooves (510) with opposite helix directions are respectively formed on the driving shaft (507) corresponding to the two second sliders (502). The driving shaft (507) is in transmission connection with the second sliders (502) through the helical grooves (510).

5. The sample extraction device for geotechnical engineering according to claim 3, characterized in that: A storage cavity (407) is formed in the drill pipe (201) corresponding to the soil sampling box (401). The storage cavity (407) is communicated with the installation cavity (203). A third telescopic member (406) is fixedly connected inside the installation cavity (203), and the telescopic end of the third telescopic member (406) is fixedly connected to the soil sampling box (401).

6. The sample extraction device for geotechnical engineering according to claim 1, characterized in that: The power device (100) includes a first drive box (101). A rotating rod (102) is rotatably connected inside the first drive box (101). A drive cylinder (103) is fixedly sleeved outside the rotating rod (102). A plurality of helical fins (104) evenly distributed in the circumferential direction are fixedly connected to the outer side surface of the drive cylinder (103). The rotating rod (102) is in coaxial transmission connection with the drill pipe (201). Input ports (105) and output ports (106) penetrating through its side wall are respectively formed at both ends of the first drive box (101) corresponding to the drive cylinder (103). The input ports (105) and the output ports (106) are hermetically connected to a hydraulic circulation system.

7. An apparatus for extracting samples used in geotechnical engineering according to claim 6, characterized in that: An installation plate (204) is installed on the first drive box (101). The rotating rod (102) is sealingly and rotatably connected to the installation plate (204). A top cover (205) is installed on the installation plate (204). The top cover (205), the installation plate (204) and the first drive box (101) are sealingly and fixedly connected. An inlet (206) connected to an external water supply device is formed on the top cover (205). A water storage cavity (207) is formed between the installation plate (204) and the top cover (205). A first water flow channel (208) communicating with the water storage cavity (207) is formed inside the rotating rod (102). A second water flow channel (209) is formed through the drill pipe (201) corresponding to the first water flow channel (208). The second water flow channel (209) avoids the position of the installation cavity (203). A plurality of water spraying ports (210) communicating with the second water flow channel (209) are formed on the drill bit (202).

8. The sample extraction device for geotechnical engineering according to claim 1, characterized in that: It further includes a moving device (600). The power device (100) is slidably installed on the moving device (600). The moving device (600) includes a rotating box (601). A first guide rail (602) is fixedly installed on the rotating box (601). A third slider (603) is slidably connected to the first guide rail (602). The power device (100) is fixedly connected to the third slider (603). A first screw rod (604) is rotatably connected to the first guide rail (602). A first threaded hole (605) corresponding to the first screw rod (604) is formed on the third slider (603). The third slider (603) is in threaded transmission connection with the first screw rod (604). A second motor (606) is fixedly installed inside the rotating box (601). A first bevel gear (607) is fixedly installed on the drive shaft of the second motor (606). A second bevel gear (608) is fixedly installed at one end of the first screw rod (604) extending into the rotating box (601). The first bevel gear (607) and the second bevel gear (608) are meshed with each other.

9. The sample extraction device for geotechnical engineering according to claim 8, characterized in that: Further comprising an orientation device (700), the mobile device (600) is rotatably connected to the orientation device (700), the orientation device (700) includes a fixed seat (701), the rotating box (601) is rotatably connected to one end of the fixed seat (701), a second guide rail (702) is fixedly installed on the fixed seat (701), a fourth slider (703) is slidably connected to the second guide rail (702), a second threaded hole (704) is formed in the fourth slider (703), a second screw rod (705) is rotatably connected to the fixed seat (701), the second screw rod (705) passes through the second threaded hole (704) and is in threaded driving connection with the fourth slider (703), a third motor (706) is installed at one end of the fixed seat (701) away from the rotating box (601), a driving shaft of the third motor (706) is in driving connection with the second screw rod (705), a third telescopic member (707) is rotatably connected to the fourth slider (703), and a telescopic end of the third telescopic member (707) is rotatably connected to the first guide rail (602).

10. A sample extraction device for geotechnical engineering according to any one of claims 1-9, characterized in that: A plurality of drilling blocks (2021) are arranged on the drill bit (202) in a centrosymmetric distribution, a first chip removal groove (2011) is formed in a spiral shape on the drill pipe (201) corresponding to the drilling blocks (2021), a sliding portion (2012) for disconnecting the first chip removal groove (2011) is arranged on the drill pipe (201) corresponding to the working position of the sliding sleeve (301), and a second chip removal groove (3011) for connecting the first chip removal groove (2011) is formed in the sliding sleeve (301).

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