Geological exploration deep soil sampling and in-situ testing combined device

Abstract

The invention relates to the technical field of geological exploration, and discloses a geological exploration deep soil sampling and in-situ testing integrated device which comprises a moving frame and a sampling mechanism installed on the moving frame, the sampling mechanism comprises a connecting assembly, and the connecting assembly comprises a soil sampling cylinder used for sampling soil in geological exploration; the first detection assembly comprises a hollow detection disc which slides up and down in the soil sampling cylinder; the second detection assembly comprises a hollow detection ring which slides up and down on the outer surface of the soil sampling cylinder; the first detection assembly enables the hollow detection disc to slide on the inner wall of the soil sampling cylinder, if the inner wall is provided with a bulge, the hollow detection disc is intercepted, and a defect is prompted; the second detection assembly enables the hollow detection ring to slide on the outer wall of the soil sampling cylinder, if the outer wall is provided with a bulge, the hollow detection ring is intercepted, and bidirectional defect detection is realized; meanwhile, in the sliding process of the hollow detection disc and the hollow detection ring, residual soil on the cylinder wall is scraped off at the same time, the defect is prevented from being shielded, soil sample distortion caused by the fact that the residual soil affects subsequent soil sampling is also prevented, and a reliable soil sample reference is provided for in-situ testing.

Description

Technical Field

[0001] This invention belongs to the field of geological exploration technology, and in particular relates to a combined device for deep soil sampling and in-situ testing in geological exploration. Background Technology

[0002] The combined operation of deep soil sampling and in-situ testing aims to obtain comprehensive engineering characteristics of deep underground soil layers. Deep soil sampling involves collecting undisturbed soil samples at a specified depth using a soil sampler's sampling tube, providing undisturbed samples for laboratory analysis of soil physical parameters. In-situ testing, on the other hand, requires conducting tests in the soil layer under its in-situ condition using sampling holes to obtain the true mechanical response of the soil layer. The data from both methods need to be mutually verified and supplemented to form complete and reliable geological exploration conclusions.

[0003] While current sampling cylinders used in collaborative operations are mostly made of high-strength metal to adapt to deep and complex environments, long-term use can lead to millimeter-level micro-dents or protrusions on the cylinder walls due to factors such as impact from underground gravel, friction from hard rock layers, mechanical stress from lowering and raising the sampler, and collisions during sample loading and unloading. Micro-dents in the sampling cylinder can cause localized compression of cohesive soils, resulting in pore compression and higher density, or trapping particles in sandy soils, leading to soil stratification. Micro-protrusions can scrape soil layers and disrupt sample continuity, especially in easily eroded soil layers such as silt, causing missing corners and interlayers in the sample. These distorted soil samples not only cause laboratory analysis data to deviate from reality but also lead surveyors to misjudge soil layer distribution, resulting in incorrect testing ranges for subsequent in-situ tests and rendering the measured data inconsistent.

[0004] However, in the current process of deep soil sampling in geological exploration, visual inspection is the main method, which cannot accurately identify minor depressions or protrusions. Furthermore, the soil residue on the inner and outer walls of the sampling tube after sampling will further obscure defects and exacerbate blind spots in the detection. Even if a defect is suspected in the sampling tube, it must be disassembled from the joint operation system for separate inspection. After inspection, the residual soil must be cleaned up separately. This not only interrupts the joint operation process but also easily leads to positioning deviation of the sampling tube due to disassembly and reassembly, affecting the accuracy of subsequent operations. Summary of the Invention

[0005] The purpose of this invention is to provide a combined device for deep soil sampling and in-situ testing in geological exploration, which solves the technical problem that existing technologies cannot accurately clean and detect defects on the inner and outer walls of the soil sampling cylinder.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A combined device for deep soil sampling and in-situ testing in geological exploration includes a mobile frame and a sampling mechanism mounted on the mobile frame. The sampling mechanism includes: a connecting component comprising a soil sampling cylinder for soil sampling during geological exploration; a first detection component comprising a hollow detection disk that slides axially along the inner wall of the soil sampling cylinder; a second detection component comprising a hollow detection ring that slides axially along the outer wall of the soil sampling cylinder; and a driving component for driving the hollow detection disk and hollow detection ring to move on the soil sampling cylinder, facilitating the detection of whether there are depressions and protrusions on the cylinder wall of the soil sampling cylinder, and cleaning the residual soil inside and outside the soil sampling cylinder.

[0007] Preferably, the first detection component further includes: a first drive box on which a first hollow reciprocating screw is rotatably mounted; a first impeller located inside the first drive box and fixedly connected to the first hollow reciprocating screw; and a hollow threaded column threadedly connected to the first hollow reciprocating screw, on which an auxiliary rod fixedly connected to the first drive box is slidably mounted.

[0008] Preferably, the first detection component further includes: a telescopic rod, which is fixedly installed at the bottom end of the first hollow reciprocating screw, and a first connecting column is fixedly installed at its bottom end.

[0009] Preferably, the drive assembly includes: a second connecting pipe, which is fixedly connected to the right side of the first drive box; and a first connecting pipe, one end of which is fixedly connected to the left side of the first drive box, and the other end of which is fixedly connected to the top of the first drive box.

[0010] Preferably, the sampling mechanism further includes a cleaning component, which includes: a rotating disk rotatably mounted on the hollow detection disk, on which a plurality of second nozzles are fixedly mounted; and a pressure plate slidably mounted on the hollow detection disk and slidably connected to the first connecting column, and connected to the hollow detection disk through a plurality of third springs.

[0011] Preferably, the second detection component further includes: a second drive box, fixedly connected to the first drive box and fixedly connected to the second connecting pipe, on which a second hollow reciprocating screw is rotatably mounted; a second impeller, located inside the second drive box and fixedly connected to the second hollow reciprocating screw; and a threaded sleeve, threadedly connected to the second hollow reciprocating screw, on which two hollow connecting rods fixedly mounted are fixedly connected to the hollow detection ring.

[0012] Preferably, the second detection component further includes a hollow detection ring, which is fixedly connected to the hollow connecting rod; a pressure ring, which is slidably installed inside the hollow detection ring and connected to the hollow detection ring via multiple first springs; a second connecting post, which is fixedly installed inside the hollow detection ring and slidably connected to the pressure ring; and a first injection pipe, which is fixedly installed at the bottom of the hollow detection ring.

[0013] Preferably, the connecting assembly further includes: an auxiliary tube, which is slidably connected to the hollow connecting rod, with one end fixedly connected to the second drive box and the other end fixedly connected to the soil sampling cylinder.

[0014] Preferably, the drive assembly further includes a third connecting pipe, one end of which is fixedly connected to the second drive box, and the other end of which is fixedly connected to the hollow connecting rod.

[0015] Preferably, the sampling mechanism further includes an extension assembly, which includes: a fixed tube with a plurality of grooves on its inner wall; an extension column slidably installed inside the fixed tube, on which an indicator column is fixedly installed; and a protrusion slidably installed inside the extension column and connected to the extension column by a second spring.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. After soil sampling, this invention utilizes a driving component to drive a first detection component and a second detection component. The first detection component causes a hollow detection disc to slide on the inner wall of the soil sampling cylinder. If there is a protrusion on the inner wall, the hollow detection disc is intercepted, indicating a defect. The second detection component causes a hollow detection ring to slide on the outer wall of the soil sampling cylinder. If there is a protrusion on the outer wall, the hollow detection ring is intercepted, achieving bidirectional defect detection. Simultaneously, during the sliding process of the hollow detection disc and the hollow detection ring, residual soil on the cylinder wall is scraped away, preventing defects from being obscured and preventing residual soil from affecting subsequent soil sampling and causing soil sample distortion, thus providing a reliable soil sample benchmark for in-situ testing.

[0017] 2. When water enters the hollow detection ring, the water source compresses the first spring by squeezing the pressure ring, and is sprayed from the first spray pipe to wash away fine soil impurities on the outer wall. When water enters the hollow detection disc, the water source compresses the third spring by squeezing the pressure plate, and at the same time, the first hollow reciprocating screw drives the telescopic rod and the first connecting column to rotate, so that the rotating disc carries the second spray pipe to rotate and spray, thoroughly washing the dead corners of the inner wall. This can avoid misjudgment caused by fine soil getting stuck between the hollow detection disc, the hollow detection ring and the cylinder wall, and the rotating spray can cover areas that cannot be sprayed in one direction, ensuring thorough cleaning and guaranteeing detection accuracy.

[0018] 3. In this invention, multiple fixed tubes are respectively installed at the hollow detection disc and the hollow detection ring. When water enters the detection component, it simultaneously squeezes the extension column inside the fixed tube, causing the indicator column to move. The protrusion on the extension column is engaged in the groove of the fixed tube under the action of the second spring, thus positioning the indicator column. By observing the movement distance and positioning status of the indicator column, the fit between the hollow detection disc, the hollow detection ring, and the soil sampling tube can be determined. If there is a gap due to manufacturing deviation or long-term wear, and the movement distance of the indicator column is abnormal, it indicates that the detection component is not suitable. Problems with the detection component can be checked in advance to avoid missing small depressions and protrusions due to poor fit, further ensuring the accuracy of soil sampling tube defect detection. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the assembly structure of the sampling mechanism in this invention; Figure 3 This is a schematic diagram of the assembly structure of the driving component in this invention; Figure 4 This is a schematic diagram of the assembly structure of the first detection component in this invention; Figure 5 In this invention Figure 4 Enlarged schematic diagram of part A; Figure 6 This is a schematic diagram of the assembly structure of the telescopic rod and the first connecting column in this invention; Figure 7 This is a schematic diagram of the assembly structure of the extension component in this invention; Figure 8 This is a schematic diagram of the internal structure of the extension column in this invention; Figure 9 This is a schematic diagram of the assembly structure of the second detection component in this invention; Figure 10 In this invention Figure 9 Enlarged schematic diagram of part B.

[0021] Reference numerals: 100, Moving frame; 200, Sampling mechanism; 210, Drive assembly; 211, First connecting pipe; 212, Second connecting pipe; 213, Third connecting pipe; 214, Connecting frame; 220, First detection assembly; 221, First drive box; 222, First impeller; 223, First hollow reciprocating screw; 224, Hollow threaded column; 225, Auxiliary rod; 226, First connecting column; 227, Telescopic rod; 228, Hollow detection disc; 230, Second detection assembly; 231, Second impeller; 232, Second drive box; 233, Second... 234. Hollow reciprocating lead screw; 235. Second connecting post; 236. Hollow connecting rod; 237. Threaded sleeve; 238. Hollow detection ring; 239. First spray pipe; 230. First spring; 231. Pressure ring; 240. Connecting assembly; 241. Auxiliary pipe; 242. Soil sampling cylinder; 250. Extension assembly; 251. Fixing pipe; 252. Extension post; 253. Indicator post; 254. Groove; 255. Protrusion; 256. Second spring; 260. Cleaning assembly; 261. Second spray pipe; 262. Rotary disk; 263. Third spring; 264. Pressure plate. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0025] This invention is described in detail with reference to the accompanying drawings. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not to scale. Furthermore, the accompanying drawings are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0026] Furthermore, it should be noted in the description of this invention that the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this invention should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Example 1: As Figures 1 to 10 As shown, the combined device for deep soil sampling and in-situ testing in geological exploration includes a mobile frame 100 and a sampling mechanism 200 installed on the mobile frame 100. The sampling mechanism 200 includes a drive component 210, a first detection component 220, a second detection component 230, a connecting component 240, an extension component 250, and a cleaning component 260.

[0029] The connecting assembly 240 includes a soil sampling cylinder 242 for sampling soil in geological exploration; the first detection assembly 220 includes a hollow detection disk 228 that slides up and down inside the soil sampling cylinder 242; the second detection assembly 230 includes a hollow detection ring 237 that slides up and down on the outer surface of the soil sampling cylinder 242; the driving assembly 210 is used to drive the hollow detection disk 228 and the hollow detection ring 237 to move on the soil sampling cylinder 242, and to detect whether there are depressions and protrusions on the cylinder wall of the soil sampling cylinder 242 by means of the up-and-down moving hollow detection disk 228 and hollow detection ring 237, and to clean the soil remaining inside and outside the soil sampling cylinder 242.

[0030] It should be noted that the soil sampling cylinder 242 can be moved to the desired soil sampling location using the movable frame 100. By controlling the control cabinet integrated with the movable frame 100, the soil sampling cylinder 242 can be rotated and lowered to penetrate the soil for sampling. However, since the soil contains not only mud but also gravel and metal materials, these materials will come into contact with or compress the soil sampling cylinder 242. Over time, this will cause indentations or protrusions on the cylinder wall of the soil sampling cylinder 242. These indentations and protrusions will damage the original state of the soil sample, causing subsequent in-situ tests to lose a reliable reference benchmark. Therefore, after each soil sampling operation using the soil sampling cylinder 242 and after the soil inside the cylinder 242 is removed, the hollow detection ring 237 and the hollow... The hollow detection disc 228 moves on the soil sampling cylinder 242. Since the hollow detection ring 237 and the hollow detection disc 228 fit snugly against the soil sampling cylinder 242, the up-and-down movement of the hollow detection ring 237 and the hollow detection disc 228 not only cleans the soil on the inner and outer surfaces of the soil sampling cylinder 242, but also detects whether there are any depressions or protrusions on the cylinder wall. If there are depressions or protrusions on the cylinder wall of the soil sampling cylinder 242, it will affect the movement of one of the hollow detection rings 237 and the hollow detection disc 228, thus facilitating the inspection of the soil sampling cylinder 242 and allowing for timely repair or replacement with a new soil sampling cylinder 242. This avoids soil sampling from a soil sampling cylinder 242 with depressions or protrusions, which could damage the original soil condition and affect subsequent test data.

[0031] like Figures 2 to 6 As shown, the first detection component 220 also includes a first drive box 221, a first impeller 222, a first hollow reciprocating screw 223, a hollow threaded column 224, an auxiliary rod 225, a first connecting column 226, and a telescopic rod 227.

[0032] A first hollow reciprocating screw 223 is rotatably mounted on the first drive box 221; a first impeller 222 is located inside the first drive box 221 and is fixedly connected to the first hollow reciprocating screw 223; a hollow threaded column 224 is threadedly connected to the first hollow reciprocating screw 223, and an auxiliary rod 225 fixedly connected to the first drive box 221 is slidably mounted on the hollow threaded column 224; a hollow detection disc 228 is fixedly connected to the hollow threaded column 224; a telescopic rod 227 is fixedly mounted at the bottom end of the first hollow reciprocating screw 223, and a first connecting column 226 is fixedly mounted at the bottom end of the telescopic rod 227; the telescopic rod 227 is fixedly connected to the first hollow reciprocating screw 223, but does not completely seal the bottom end of the first hollow reciprocating screw 223, leaving a gap to ensure water flow.

[0033] The drive assembly 210 includes a first connecting pipe 211, a second connecting pipe 212, a third connecting pipe 213, and a connecting bracket 214.

[0034] The second connecting pipe 212 is fixedly connected to the right side of the first drive box 221; one end of the first connecting pipe 211 is fixedly connected to the left side of the first drive box 221, and the other end of the first connecting pipe 211 is fixedly connected to the top of the first drive box 221.

[0035] It should be noted that the second connecting pipe 212 is first connected to an external water supply device, allowing the device to provide a water source. This water source then enters the first drive box 221 through the second connecting pipe 212, causing the first impeller 222 inside the first drive box 221 to rotate. The rotation of the first impeller 222 causes the first hollow reciprocating screw 223 to rotate, which in turn causes the hollow threaded column 224 to move up and down. The hollow detection disc 228, connected to the hollow threaded column 224, can then be used for soil sampling. The soil sampling cylinder 242 moves up and down inside, cleaning impurities from the inner wall and checking for protrusions. If a protrusion is found, it will block the hollow detection disc 228 because the sampling cylinder 242 is in contact with it, preventing the disc from moving away from the protrusion. This indicates that the sampling cylinder 242 is not functioning properly and that the soil sampled and the soil layer obtained using the sampling cylinder 242 have problems and are not valuable for in-situ testing. This allows for timely replacement of the sampling cylinder 242 and re-sampling and in-situ testing.

[0036] Since the movement of the hollow detection disc 228 is driven by a water source, when the hollow detection disc 228 encounters a protrusion and cannot move, the water source can still flow, while the hollow detection disc 228 can remain stationary, effectively preventing the soil sampling cylinder 242 from being damaged due to excessive pressure on the protrusion caused by the hollow detection disc 228.

[0037] like Figure 4 and Figure 5 As shown, the cleaning assembly 260 includes a second nozzle 261, a rotating disk 262, a third spring 263, and a pressure plate 264.

[0038] The rotating disk 262 is rotatably mounted on the hollow detection disk 228, and several second nozzles 261 are fixedly mounted on the rotating disk 262; the pressure plate 264 is slidably mounted on the hollow detection disk 228, and the third spring 263 is slidably connected to the first connecting post 226. The third spring 263 is connected to the hollow detection disk 228 through multiple third springs 263.

[0039] It should be noted that, since water is used for driving, the water entering the first drive box 221, after driving the first impeller 222 to rotate, will enter the first hollow reciprocating screw 223 through the first drive box 221. Subsequently, it will be discharged into the hollow detection plate 228 through the first hollow reciprocating screw 223, continuously squeezing the pressure plate 264, causing the pressure plate 264 to compress the third spring 263 and move downwards until the pressure plate 264 separates from the telescopic rod 227. Only then will the water enter the area below the pressure plate 264 and be sprayed out from the second nozzle 261. However, since the first hollow reciprocating screw 223 is not... The telescopic rod 227 rotates, and the telescopic rod 227 rotates the rotating disk 262 through the first connecting column 226. The second nozzle 261 installed on the rotating disk 262 rotates and sprays water. The sprayed water acts on the inner wall of the soil sampling cylinder 242, cleaning the soil and further improving the cleaning effect. It also effectively prevents some small impurities in the soil from getting stuck between the hollow detection disk 228 and the soil sampling cylinder 242, causing the hollow detection disk 228 to be unable to move. This would lead the operator to mistakenly believe that there is a protrusion on the inner wall of the soil sampling cylinder 242, resulting in an incorrect judgment and affecting the in-situ test.

[0040] like Figure 9 and Figure 10 As shown, the second detection component 230 includes a second impeller 231, a second drive box 232, a second hollow reciprocating screw 233, a second connecting column 234, a hollow connecting rod 235, a threaded sleeve 236, a hollow detection ring 237, a first injection pipe 238, a first spring 239, and a pressure ring 2391.

[0041] The second drive box 232 is fixedly connected to the first drive box 221, and the second drive box 232 is fixedly connected to the second connecting pipe 212. A second hollow reciprocating screw 233 is rotatably mounted on the second drive box 232. The second impeller 231 is located inside the second drive box 232 and is fixedly connected to the second hollow reciprocating screw 233. The threaded sleeve 236 is threadedly connected to the second hollow reciprocating screw 233, and two hollow connecting rods 235 are fixedly mounted on the threaded sleeve 236. The hollow detection ring 237 is fixedly connected to the hollow connecting rods 235. The pressure ring 2391 is slidably mounted inside the hollow detection ring 237 and is connected to the hollow detection ring 237 through multiple first springs 239. The second connecting post 234 is fixedly mounted inside the hollow detection ring 237 and is slidably connected to the pressure ring 2391. The first injection pipe 238 is fixedly mounted at the bottom of the hollow detection ring 237.

[0042] like Figure 2 and Figure 3As shown, the auxiliary pipe 241 is slidably connected to the hollow connecting rod 235. One end of the auxiliary pipe 241 is fixedly connected to the second drive box 232, and the other end of the auxiliary pipe 241 is fixedly connected to the soil sampling cylinder 242. One end of the third connecting pipe 213 is fixedly connected to the second drive box 232, and the other end of the third connecting pipe 213 is fixedly connected to the hollow connecting rod 235.

[0043] It should be noted that when water is introduced into the second connecting pipe 212, the water will also enter the second drive box 232, causing the second impeller 231 inside the second drive box 232 to rotate. The rotation of the second impeller 231 will cause the second hollow reciprocating screw 233 to rotate. The rotation of the second hollow reciprocating screw 233 will cause the threaded sleeve 236 and the second hollow reciprocating screw 233 to move up and down. The up and down movement of the second hollow reciprocating screw 233 will cause the hollow detection ring 237 to move up and down. Since the hollow detection ring 237 is in contact with the outer surface of the soil sampling cylinder 242, the hollow detection ring 237 can clean the soil on the outer surface of the soil sampling cylinder 242 and can also detect whether there are protrusions on the outer surface of the soil sampling cylinder 242. In this way, by using the hollow detection ring 237 and the hollow detection disc 228 to detect both the inner and outer walls of the soil sampling cylinder 242, it is possible to comprehensively detect whether there are depressions or protrusions on the cylinder wall of the soil sampling cylinder 242.

[0044] Furthermore, the water source entering the second drive box 232 will enter the hollow connecting rod 235 through the third connecting pipe 213. Subsequently, this water source will enter the hollow detection ring 237 through the hollow connecting rod 235. The water source will squeeze the pressure ring 2391, causing the pressure ring 2391 to move down to the recess of the second connecting post 234. In this way, the water source can flow to the bottom of the pressure ring 2391 and be sprayed out from the first spray pipe 238. The sprayed water source will clean the soil on the soil sampling cylinder 242, preventing some small impurities in the soil from getting stuck between the hollow detection ring 237 and the soil sampling cylinder 242, causing the hollow detection ring 237 to be unable to move, making the operator mistakenly believe that there is a protrusion on the inner wall of the soil sampling cylinder 242, resulting in an incorrect judgment and affecting the in-situ test.

[0045] The working principle of this embodiment: In deep soil sampling operations during geological exploration, the sampling mechanism 200 is first moved to the target soil sampling location by the mobile frame 100. The control cabinet of the mobile frame 100 is controlled to rotate and lower the soil sampling cylinder 242 of the connecting component 240 to penetrate the soil and complete the soil sampling. After soil sampling, the soil sample is taken out of the soil sampling cylinder 242. Then, the drive component 210 is started to perform defect detection and residual soil cleaning on the soil sampling cylinder 242. The second connecting pipe 212 of the drive component 210 is connected to an external water supply device. The water source delivered by the water supply device is divided into two paths through the second connecting pipe 212. One path enters the first drive box 221 of the first detection component 220, and the other path enters the second drive box 232 of the second detection component 230.

[0046] The water entering the first drive box 221 drives the first impeller 222 to rotate, which in turn drives the first hollow reciprocating screw 223 to rotate synchronously. The first hollow reciprocating screw 223 is threadedly connected to the hollow threaded column 224. Under the limiting effect of the auxiliary rod 225 and the first drive box 221, the hollow threaded column 224 cannot rotate with the first hollow reciprocating screw 223, but can only move up and down along it. The hollow threaded column 224 drives the hollow detection disc 228 to slide synchronously up and down inside the soil sampling cylinder 242. During the sliding process, the hollow detection disc 228 adheres to the inner wall of the soil sampling cylinder 242, scraping away residual soil on the inner wall. Furthermore, if there are protrusions on the inner wall, they will intercept the hollow detection disc 228, causing... The inability to move further indicates a defect in the inner wall of the soil sampling cylinder 242. Simultaneously, the rotation of the first hollow reciprocating screw 223 drives the telescopic rod 227 and the first connecting column 226 at the bottom to rotate synchronously. The water source entering the first drive box 221 also flows into the hollow detection disk 228 through the internal channel of the first hollow reciprocating screw 223. The water source squeezes the pressure plate 264 of the cleaning component 260, causing the pressure plate 264 to compress the third spring 263 and move downward until the pressure plate 264 separates from the telescopic rod 227. The water source enters the area of ​​the rotating disk 262. The first connecting column 226 drives the rotating disk 262 to rotate. The second nozzle 261 on the rotating disk 262 sprays water while rotating, washing the dead corners of the inner wall of the soil sampling cylinder 242 to avoid false detection due to fine soil residue.

[0047] The water entering the second drive box 232 drives the internal second impeller 231 to rotate, which in turn drives the second hollow reciprocating screw 233 to rotate synchronously. The second hollow reciprocating screw 233 is threadedly connected to the threaded sleeve 236, which in turn drives the two hollow connecting rods 235 to move up and down. The hollow connecting rods 235 drive the hollow detection ring 237 to slide up and down synchronously on the outer surface of the soil sampling cylinder 242. During the sliding process, the hollow detection ring 237 adheres to the outer wall of the soil sampling cylinder 242, scraping off residual soil from the outer wall on one hand, and intercepting the hollow detection ring 237 if there are any protrusions on the outer wall on the other hand. This prevents the soil sampler from moving further, indicating a defect on the outer wall of the soil sampler 242. Simultaneously, water entering the second drive box 232 flows through the third connecting pipe 213 into the hollow connecting rod 235, and then into the hollow detection ring 237. The water squeezes the pressure ring 2391, causing it to compress the first spring 239 and move down along the second connecting post 234 until the pressure ring 2391 moves to the recess of the second connecting post 234. Water then sprays out from the first spray pipe 238 at the bottom of the hollow detection ring 237, rinsing away the fine soil residue remaining on the outer wall of the soil sampler 242, further ensuring accurate defect detection.

[0048] If both the hollow detection disc 228 and the hollow detection ring 237 can slide smoothly up and down, it means that there are no depressions or protrusions on the wall of the soil sampling tube 242 that would affect the original state of the soil sample, and it can continue to be used for subsequent soil sampling operations to ensure the reliability of subsequent in-situ test data; if any detection component is blocked, the soil sampling tube 242 needs to be repaired or replaced to avoid the soil sample being distorted due to the use of a defective soil sampling tube 242.

[0049] Example 2: Figures 5 to 10 As shown, while all other parts are the same as in Example 1, the difference between this example and Example 1 is that: The extension assembly 250 includes a fixing tube 251, an extension post 252, an indicator post 253, a groove 254, a protrusion 255, and a second spring 256.

[0050] The fixed tube 251 has several grooves 254 on its inner wall; the extension column 252 is slidably installed inside the fixed tube 251, and an indicator column 253 is fixedly installed on the extension column 252; the protrusion 255 is slidably installed inside the extension column 252, and the protrusion 255 is connected to the extension column 252 through the second spring 256.

[0051] The working principle of this embodiment is as follows: If there is a gap between the hollow detection disc 228 or the hollow detection ring 237 and the soil sampling cylinder 242 due to manufacturing process deviation or long-term wear, the existence of the gap will prevent the hollow detection disc 228 or the telescopic rod 227 from detecting some small depressions and protrusions, thereby affecting the accuracy of the in-situ test.

[0052] Several extension components 250 are respectively installed at the hollow detection plate 228 and the hollow detection ring 237. At the hollow detection plate 228, the water source first squeezes the pressure plate 264, causing the pressure plate 264 to move downwards before the water source can be discharged. At the hollow detection ring 237, the water source first squeezes the pressure ring 2391, causing the pressure ring 2391 to move downwards before the water source can be discharged. In this way, the water source is also squeezed into the fixed tube 251, squeezing the extension column 252 inside the fixed tube 251. This causes the extension column 252 to drive the indicator column 253 to move, and due to the protrusion 25... The function of the second spring 256 is to position the protrusion 255 and the groove 254 after the indicator post 253 moves. If the moving distance of the indicator post 253 is ≤0.5mm, it is considered a match. The matching clearance between the hollow detection disc 228, the hollow detection ring 237 and the soil sampling cylinder 242 is detected. If they match, the detection components can work normally. If they do not match, the detection components need to be replaced to ensure the accuracy of the dent / protrusion detection and to avoid the situation where the size does not match or the wear occurs after long-term use, which will affect the normal detection of the soil sampling cylinder 242 by the hollow detection disc 228 and the hollow detection ring 237.

[0053] Example 3: As Figures 1 to 10As shown, while all other parts are the same as in Example 1, the difference between this example and Example 1 is that: After soil sampling is completed, the soil sampling cylinder 242 is first inspected for defects using the first inspection component 220 and the second inspection component 230 (the inspection content is the depressions and protrusions on the cylinder wall of the soil sampling cylinder 242), and the residual soil is cleaned up; if no defects are detected, the initial density, moisture content and other baseline data of the soil sample laboratory analysis are recorded.

[0054] After soil is taken using the device, a vertical sampling hole is formed (the hole diameter matches the 242 sampling cylinder, eliminating the risk of hole collapse). No additional drilling is required, and the standard penetrator can be directly lowered to the test depth through the hole opening.

[0055] Use a free hammer to strike the penetrator with a drop height of 76cm, and record the number of hammer blows (N value) required to penetrate 30cm; test a depth point every 1-2m, and the test range should cover the corresponding soil layer interval of the soil sample collected by soil sampling tube 242.

[0056] If no defects are found in the soil sample tube 242, the N value of the standard penetration test should be positively correlated with the density measured in the soil sample laboratory (e.g., for sandy soil, an N value ≥ 30 corresponds to a dense state, and the dry density measured in the laboratory should be ≥ 1.9 g / cm³). If there is a data deviation, the soil sample tube 242 needs to be rechecked through the device to see if there are any undetected minor defects.

[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0058] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A combined device for deep soil sampling and in-situ testing in geological exploration, comprising a mobile frame (100) and a sampling mechanism (200) mounted on the mobile frame (100), characterized in that, The sampling mechanism (200) includes: The connecting assembly (240) includes a soil sampling tube (242) for soil sampling during geological exploration. The first detection component (220) includes a hollow detection disk (228) that slides axially along the inner wall of the soil sampling cylinder (242). The second detection component (230) includes a hollow detection ring (237) that slides axially along the outer wall of the soil sampling cylinder (242). The drive assembly (210) is used to drive the hollow detection disc (228) and the hollow detection ring (237) to move on the soil sampling cylinder (242), so that the hollow detection disc (228) and the hollow detection ring (237) can detect whether there are depressions and protrusions on the wall of the soil sampling cylinder (242) and clean the soil remaining inside and outside the soil sampling cylinder (242).

2. The combined device for deep soil sampling and in-situ testing in geological exploration according to claim 1, characterized in that, The first detection component (220) further includes: The first drive box (221) has a first hollow reciprocating screw (223) rotatably mounted on it. The first impeller (222) is located inside the first drive box (221) and is fixedly connected to the first hollow reciprocating screw (223); A hollow threaded column (224) is threadedly connected to the first hollow reciprocating screw (223), and an auxiliary rod (225) is slidably mounted on it and fixedly connected to the first drive box (221).

3. The combined device for deep soil sampling and in-situ testing in geological exploration according to claim 2, characterized in that, The first detection component (220) further includes: A hollow detection disc (228) is fixedly connected to the hollow threaded post (224); The telescopic rod (227) is fixedly installed at the bottom end of the first hollow reciprocating screw (223), and a first connecting column (226) is fixedly installed at its bottom end.

4. The combined device for deep soil sampling and in-situ testing in geological exploration according to claim 2, characterized in that, The driving component (210) includes: The second connecting pipe (212) is fixedly connected to the right side of the first drive box (221); The first connecting tube (211) has one end fixedly connected to the left side of the first drive box (221) and the other end fixedly connected to the top of the first drive box (221).

5. The combined device for deep soil sampling and in-situ testing in geological exploration according to claim 3, characterized in that, The sampling mechanism (200) further includes a cleaning component (260), which includes: A rotating disk (262) is rotatably mounted on the hollow detection disk (228), and several second nozzles (261) are fixedly mounted on it. The pressure plate (264) is slidably mounted on the hollow detection plate (228) and slidably connected to the first connecting post (226), and is connected to the hollow detection plate (228) by a plurality of third springs (263).

6. The combined device for deep soil sampling and in-situ testing in geological exploration according to claim 4, characterized in that, The second detection component (230) also includes: The second drive box (232) is fixedly connected to the first drive box (221) and fixedly connected to the second connecting pipe (212), and a second hollow reciprocating screw (233) is rotatably mounted on it. The second impeller (231) is located inside the second drive box (232) and is fixedly connected to the second hollow reciprocating screw (233); The threaded sleeve (236) is threadedly connected to the second hollow reciprocating screw (233), and two hollow connecting rods (235) that are fixedly connected to the hollow detection ring (237) are fixedly installed on it.

7. The combined device for deep soil sampling and in-situ testing in geological exploration according to claim 6, characterized in that, The second detection component (230) also includes: A pressure ring (2391) is slidably installed inside the hollow detection ring (237) and connected to the hollow detection ring (237) by a plurality of first springs (239); The second connecting post (234) is fixedly installed inside the hollow detection ring (237) and slidably connected to the pressure ring (2391); The first injection pipe (238) is fixedly installed at the bottom of the hollow detection ring (237).

8. The combined device for deep soil sampling and in-situ testing in geological exploration according to claim 6, characterized in that, The connection component (240) further includes: The auxiliary tube (241) is slidably connected to the hollow connecting rod (235), one end of which is fixedly connected to the second drive box (232), and the other end of which is fixedly connected to the soil sampling tube (242).

9. The combined device for deep soil sampling and in-situ testing in geological exploration according to claim 6, characterized in that, The drive component (210) further includes: The third connecting tube (213) is fixedly connected at one end to the second drive box (232) and at the other end to the hollow connecting rod (235).

10. The combined device for deep soil sampling and in-situ testing in geological exploration according to claim 1, characterized in that, The sampling mechanism (200) further includes an extension component (250), the extension component (250) comprising: The fixed tube (251) has several grooves (254) on its inner wall; An extension column (252) is slidably installed inside the fixed tube (251), and an indicator column (253) is fixedly installed on it. The protrusion (255) is slidably mounted inside the extension post (252) and connected to the extension post (252) by a second spring (256).

Images