Civil engineering detection geological sampling device

Abstract

The application discloses a civil engineering detection geological sampling device and belongs to the technical field of soil detection. The device comprises a supporting bottom plate, a supporting top plate arranged above the supporting bottom plate, a plurality of first limiting supports arranged at the two ends of the upper surface of the supporting bottom plate and used for supporting and fixing the supporting top plate, a sampling mechanism arranged below the supporting top plate, a sampling assembly used for sampling and a discharging assembly used for height adjustment of the sampling assembly, the sampling assembly is arranged at the bottom of the discharging assembly, and a limiting through hole for accommodating the sampling assembly is formed in the upper surface of the supporting bottom plate. Through the cooperation of multiple structures, the sampling device can accurately sample the soil at the target depth, and the sampling device can sample multiple times in a single sampling operation, so that the same depth is sampled multiple times to reduce the subsequent detection error.

Description

Technical Field

[0001] This invention belongs to the field of soil testing technology, and specifically relates to a geological sampling device for civil engineering testing. Background Technology

[0002] During the construction of civil engineering projects, sampling the soil in the construction area is an important step. The results of geological testing provide an important basis for the design or planning of the construction. Appropriate sampling equipment is required to sample the soil when conducting geological testing.

[0003] Traditional sampling devices include a support frame, a movable rod, a first threaded rod, a threaded sleeve, a spiral sampling rod, a support plate, a second threaded rod, a guide rod, a base, a connecting rod, a controller, a storage box, and threaded holes. The advantage of this sampling device is that it can avoid tilting the threaded sampling rod during sampling.

[0004] However, traditional sampling devices can only perform simple sampling by rotating a spiral sampling rod, which makes it impossible to accurately sample the soil at the target depth. Furthermore, the sampling devices cannot perform multiple samplings during a single sampling operation, resulting in poor sampling performance, which urgently needs improvement. Summary of the Invention

[0005] The purpose of this invention is to provide a geological sampling device for civil engineering testing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a geological sampling device for civil engineering testing, comprising a supporting base plate, a supporting top plate above the supporting base plate, a plurality of first limiting support members for supporting and fixing the supporting top plate at both ends of the upper surface of the supporting base plate, a sampling mechanism below the supporting top plate, the sampling mechanism comprising a sampling component for sampling and a discharge component for adjusting the height of the sampling component, the sampling component being disposed at the bottom of the discharge component, and a limiting through hole for accommodating the sampling component passing through being opened on the upper surface of the supporting base plate.

[0007] As a further aspect of the present invention: the discharge assembly includes a first limiting mounting plate, a first driver is fixedly connected to the lower surface of the first limiting mounting plate, a hollow conveying pipe is provided below the first driver, and a spiral conveying component is provided at the output end of the first driver to cooperate with the hollow conveying pipe to convey soil.

[0008] As a further embodiment of the present invention: a protective guide cover is fixedly connected to the top of the hollow material conveying pipe, and a plurality of second limiting support members corresponding to the first limiting mounting plate are provided on the top of the protective guide cover. One end of the second limiting support member is fixedly connected to the first limiting mounting plate, and the other end of the protective guide cover is fixedly connected to the protective guide cover.

[0009] As a further embodiment of the present invention: a first height adjustment member is provided above the first driver for adjusting the height of the first limiting mounting plate, the top of the first height adjustment member is fixedly connected to the supporting top plate, and the bottom of the first height adjustment member is fixedly connected to the first limiting mounting plate.

[0010] As a further embodiment of the present invention: the sampling assembly includes a tunneling rotor, which is rotatably disposed at the bottom of the hollow conveying pipe. A plurality of tunneling racks are arranged in a ring array on the lower surface of the tunneling rotor. A limiting mounting ring is disposed above the tunneling rotor and is fixedly connected to the hollow conveying pipe. A plurality of sampling units are arranged in a ring array on the side of the limiting mounting ring. A plurality of limiting mounting holes corresponding to the sampling units are opened on the limiting mounting ring.

[0011] As a further embodiment of the present invention: the sampling unit includes a limiting mounting cylinder, which is fixed inside the limiting mounting ring through a limiting mounting hole. A position adjustment component is provided at one end of the limiting mounting cylinder near the hollow conveying pipe, and an adjustable sampling cylinder is provided at the other end of the limiting mounting cylinder away from the hollow conveying pipe. A second driver for driving the adjustable sampling cylinder to rotate is fixedly connected to the telescopic end of the position adjustment component.

[0012] As a further embodiment of the present invention: the output end of the second driver is threadedly connected to the adjustable sampling cylinder, the position adjustment component is fixedly connected to the limiting mounting cylinder, and a plurality of cutting components are provided at the end of the adjustable sampling cylinder away from the second driver, and the cutting components are fixedly connected to the adjustable sampling cylinder.

[0013] As a further embodiment of the present invention: an adjustable sealing pipe is provided above the tunneling rotor for sealing the open end of the limiting mounting cylinder. The adjustable sealing pipe is slidably connected to the limiting mounting ring. A limiting transmission disc is provided above the limiting mounting ring and is fixedly connected to the adjustable sealing pipe. A plurality of second height adjusting components are provided on the upper surface of the limiting mounting ring for cooperating with the limiting transmission disc to adjust the height of the adjustable sealing pipe.

[0014] As a further embodiment of the present invention: an adjustable protective tube is provided above the adjustable sealing tube and is fixedly connected to the limiting transmission disc. The adjustable protective tube is fixedly connected to the adjustable sealing tube. The top of the second height adjusting member is fixedly connected to the limiting transmission disc, and the bottom of the second height adjusting member is fixedly connected to the limiting mounting ring.

[0015] As a further embodiment of the present invention: a limiting protective disc corresponding to the adjustable protective pipe is provided above the limiting transmission disc, the limiting protective disc is fixed to the top of the adjustable protective pipe, the limiting protective disc is slidably connected to the hollow material conveying pipe, and the tunneling rack is fixedly connected to the tunneling rotor.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a simple structure and is easy to use. During use, the sampling device can accurately sample the soil at the target depth through the cooperation of multiple structures. Furthermore, the sampling device can perform multiple samplings during a single sampling operation to achieve multiple samplings at the same depth to reduce subsequent detection errors, and to sample at different depths to improve sampling efficiency, thus making the sampling effect of the sampling device better. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a geological sampling device for civil engineering testing.

[0018] Figure 2 This is a schematic diagram of the sampling mechanism in a geological sampling device for civil engineering testing.

[0019] Figure 3 This is a schematic diagram of the material discharge component in a geological sampling device for civil engineering testing.

[0020] Figure 4 This is a schematic diagram of the sampling component in a geological sampling device for civil engineering testing.

[0021] Figure 5 An exploded view of the sampling unit in a geological sampling device for civil engineering testing.

[0022] In the diagram: 1-Support base plate, 2-Limiting through hole, 3-Sampling mechanism, 4-First limiting support component, 5-Support top plate, 31-Discharge assembly, 32-Sampling assembly, 310-Hollow conveying pipe, 311-Screw conveying component, 312-First limiting mounting plate, 313-First height adjustment component, 314-First driver, 315-Second limiting support component, 316-Protective guide cover, 320-Tunneling rack, 321-Tunneling rotor, 322-Limiting mounting ring, 323-Adjustable sealing pipe, 324-Limiting transmission disc, 325-Limiting protective disc, 326-Adjustable protective pipe, 327-Second height adjustment component, 328-Limiting mounting hole, 33-Sampling unit, 331-Adjustable sampling cylinder, 332-Position adjustment component, 333-Limiting mounting cylinder, 334-Second driver, 335-Cutting component. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection", "linking", and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting.

[0025] Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] Please see Figure 1 and Figure 2 This embodiment provides a geological sampling device for civil engineering testing, including a supporting base plate 1, a supporting top plate 5 above the supporting base plate 1, and several first limiting support members 4 at both ends of the upper surface of the supporting base plate 1 for supporting and fixing the supporting top plate 5. A sampling mechanism 3 is provided below the supporting top plate 5. The sampling mechanism 3 includes a sampling component 32 for sampling and a discharge component 31 for adjusting the height of the sampling component 32. The sampling component 32 is located at the bottom of the discharge component 31. A limiting through hole 2 for accommodating the sampling component 32 is provided on the upper surface of the supporting base plate 1.

[0027] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment, to make the use of the discharge assembly 31 more reliable, the discharge assembly 31 preferably includes a first limiting mounting plate 312. A first driver 314 is fixedly connected to the lower surface of the first limiting mounting plate 312. The first driver 314 is an electric motor. A hollow conveying pipe 310 is provided below the first driver 314. A spiral conveying component 311 is provided at the output end of the first driver 314 to cooperate with the hollow conveying pipe 310 to convey soil. In use, the first driver 314, the hollow conveying pipe 310 and the spiral conveying component 311 form a conveying auger to convey soil.

[0028] Please see Figure 2 and Figure 3In one embodiment, to enrich the function of the discharge assembly 31, preferably, the top of the hollow conveying pipe 310 is fixedly connected to a protective guide cover 316. During use, the protective guide cover 316 guides the discharged soil. The top of the protective guide cover 316 is provided with several second limiting support members 315 corresponding to the first limiting mounting plate 312. One end of the second limiting support member 315 is fixedly connected to the first limiting mounting plate 312, and the other end of the protective guide cover 316 is fixedly connected to the protective guide cover 316. Above the first driver 314, a first height adjusting member 313 is provided for adjusting the height of the first limiting mounting plate 312. The first height adjusting member 313 is a cylinder or an electric telescopic rod. The top of the first height adjusting member 313 is fixedly connected to the supporting top plate 5, and the bottom of the first height adjusting member 313 is fixedly connected to the first limiting mounting plate 312.

[0029] In another embodiment, to reduce the cost of the discharge assembly 31, preferably, the discharge assembly 31 includes a first limiting mounting plate 312. A first driver 314, which is a pneumatic motor, is fixedly connected to the lower surface of the first limiting mounting plate 312. A hollow conveying pipe 310 is disposed below the first driver 314. A spiral conveying component 311, which works with the hollow conveying pipe 310 to convey soil, is disposed at the output end of the first driver 314. A protective guide cover 316 is fixedly connected to the top of the hollow conveying pipe 310, which guides the discharged soil during use. The top of the protective guide cover 316 is provided with several second limiting support members 315 corresponding to the first limiting mounting plate 312. One end of the second limiting support member 315 is fixedly connected to the first limiting mounting plate 312, and the other end of the protective guide cover 316 is fixedly connected to the protective guide cover 316. Above the first driver 314, there is a limiting screw for adjusting the height of the first limiting mounting plate 312. The limiting screw is rotatably connected to the first limiting mounting plate 312 through a bearing, and the limiting screw is threadedly connected to the supporting top plate 5. The setting of the limiting screw makes it convenient for the user to manually adjust the height of the first limiting mounting plate 312.

[0030] Please see Figure 1 , Figure 2 and Figure 4In one embodiment, to make the use of the sampling component 32 more reliable, the sampling component 32 preferably includes a tunneling rotor 321. The tunneling rotor 321 is rotatably disposed at the bottom of the hollow material conveying pipe 310, which passes through the tunneling rotor 321. Several tunneling racks 320 are arranged in a ring array on the lower surface of the tunneling rotor 321. The tunneling racks 320 are fixedly connected to the tunneling rotor 321. In use, the rotating tunneling rotor 321 works with the tunneling racks 320 to drill holes in the ground. The spiral material conveying component 311 works with the hollow material conveying pipe 310 to transport and transfer the broken soil generated during the drilling process. A limiting installation ring 322 is provided above the tunneling rotor 321 and is fixedly connected to the hollow material conveying pipe 310. Several sampling units 33 are arranged in a ring array on the side of the limiting installation ring 322. Several limiting installation holes 328 corresponding to the sampling units 33 are opened on the limiting installation ring 322.

[0031] Please see Figure 4 and Figure 5 In one embodiment, to make the use of the sampling unit 33 more reliable, the sampling unit 33 preferably includes a limiting mounting cylinder 333, which is a steel cylinder. The limiting mounting cylinder 333 is fixed inside the limiting mounting ring 322 through the limiting mounting hole 328. A position adjusting component 332, which is an electric telescopic rod, is provided at one end of the limiting mounting cylinder 333 near the hollow conveying pipe 310. An adjustable sampling cylinder 331 is provided at the other end of the limiting mounting cylinder 333 away from the hollow conveying pipe 310. A second driver 334 for driving the adjustable sampling cylinder 331 to rotate is fixedly connected to the telescopic end of the position adjusting component 332. The actuator 334 is an electric motor. The output end of the second driver 334 is threadedly connected to the adjustable sampling cylinder 331. The threaded connection of the adjustable sampling cylinder 331 facilitates quick assembly and disassembly by the user. The position adjustment component 332 is fixedly connected to the limiting installation cylinder 333. Several cutting components 335 are provided at the end of the adjustable sampling cylinder 331 away from the second driver 334. The cutting components 335 are steel wire ropes and are fixedly connected to the adjustable sampling cylinder 331. During use, the soil is cut by rotating the cutting components 335, so that the columnar soil is completely retained inside the adjustable sampling cylinder 331, thereby improving the sampling speed and sampling quality of the sampling unit 33.

[0032] Please see Figure 4 and Figure 5In one embodiment, to enrich the functionality of the sampling component 32, preferably, an adjustable sealing tube 323 is provided above the tunneling rotor 321 to seal the open end of the limiting mounting cylinder 333. The adjustable sealing tube 323 is slidably connected to the limiting mounting ring 322. A limiting transmission disc 324 is provided above the limiting mounting ring 322 and is fixedly connected to the adjustable sealing tube 323. The upper surface of the limiting mounting ring 322 is provided with a plurality of second height adjusting members 327 for cooperating with the limiting transmission disc 324 to adjust the height of the adjustable sealing tube 323. 327 is an electric telescopic rod. The top of the second height adjustment component 327 is fixedly connected to the limiting transmission disc 324, and the bottom of the second height adjustment component 327 is fixedly connected to the limiting mounting ring 322. An adjustable protective pipe 326 is provided above the adjustable sealing pipe 323 and is fixedly connected to the limiting transmission disc 324. The adjustable protective pipe 326 is fixedly connected to the adjustable sealing pipe 323. A limiting protective disc 325 corresponding to the adjustable protective pipe 326 is provided above the limiting transmission disc 324. The limiting protective disc 325 is fixed to the top of the adjustable protective pipe 326 and is slidably connected to the hollow conveying pipe 310.

[0033] In another embodiment, to reduce the cost of the sampling component 32, preferably, the sampling component 32 includes a tunneling rotor 321, which is rotatably mounted at the bottom of a hollow conveying pipe 310. The hollow conveying pipe 310 passes through the tunneling rotor 321. A plurality of tunneling teeth are arranged in a ring array on the lower surface of the tunneling rotor 321. The tunneling teeth are fixedly connected to the tunneling rotor 321. In use, the rotating tunneling rotor 321 works with the tunneling teeth to drill holes in the ground. The spiral conveyor 311 works with the hollow conveying pipe 310 to transport and transfer the broken soil generated during the drilling process. A limiting installation ring 322 is provided above the tunneling rotor 321 and is fixedly connected to the hollow conveying pipe 310. A plurality of sampling units 33 are arranged in a ring array on the side of the limiting installation ring 322. A plurality of limiting installation holes 328 corresponding to the sampling units 33 are provided on the limiting installation ring 322.

[0034] In another embodiment, to reduce the cost of the sampling unit 33, preferably, the sampling unit 33 includes a limiting mounting cylinder 333, which is an iron cylinder. The limiting mounting cylinder 333 is fixed inside the limiting mounting ring 322 through the limiting mounting hole 328. A position adjusting component 332, which is a cylinder, is provided at the end of the limiting mounting cylinder 333 near the hollow conveying pipe 310. An adjustable sampling cylinder 331 is provided at the end of the limiting mounting cylinder 333 away from the hollow conveying pipe 310. The telescopic end of the position adjusting component 332 is fixedly connected to... The second driver 334 is a pneumatic motor used to drive the adjustable sampling cylinder 331 to rotate. The output end of the second driver 334 is threadedly connected to the adjustable sampling cylinder 331. The threaded connection of the adjustable sampling cylinder 331 facilitates quick assembly and disassembly by the user. The position adjustment component 332 is fixedly connected to the limit mounting cylinder 333. Several cutting components 335 are provided at the end of the adjustable sampling cylinder 331 away from the second driver 334. The cutting components 335 are nylon ropes and are fixedly connected to the adjustable sampling cylinder 331.

[0035] In another embodiment, to enrich the functionality of the sampling component 32, preferably, an adjustable sealing tube 323 is provided above the tunneling rotor 321 to seal the open end of the limiting mounting cylinder 333. The adjustable sealing tube 323 is slidably connected to the limiting mounting ring 322. A limiting transmission disc 324 is provided above the limiting mounting ring 322 and is fixedly connected to the adjustable sealing tube 323. The upper surface of the limiting mounting ring 322 is provided with a plurality of second height adjusting members 327 for cooperating with the limiting transmission disc 324 to adjust the height of the adjustable sealing tube 323. The second height adjustment component 327 is a cylinder. The top of the second height adjustment component 327 is fixedly connected to the limiting transmission disk 324, and the bottom of the second height adjustment component 327 is fixedly connected to the limiting mounting ring 322. An adjustable protective pipe 326 is provided above the adjustable sealing pipe 323 and is fixedly connected to the limiting transmission disk 324. The adjustable protective pipe 326 is fixedly connected to the adjustable sealing pipe 323. Several limiting protective rods are arranged in a ring array above the limiting transmission disk 324. One end of the limiting protective rod is fixedly connected to the adjustable protective pipe 326, and the other end of the limiting protective rod is slidably connected to the hollow conveying pipe 310.

[0036] The working principle and usage process of this invention are as follows: When in use, the sampling device is placed on the ground, and then the tunneling rotor 321 is controlled to rotate, which drives the tunneling rack 320 to rotate. At the same time, the first driver 314 drives the screw conveyor 311 to rotate. At this time, the first height adjustment component 313 is controlled to gradually extend, so that the tunneling rotor 321 and the tunneling rack 320 gradually move down to perform the drilling operation. At this time, the screw conveyor 311 transports the broken soil generated during the drilling process to the ground. Then, the broken soil falls to the ground after being further guided by the protective guide cover 316.

[0037] After drilling is completed, the second height adjustment component 327 is extended to move the adjustable sealing tube 323 upward, thus removing its sealing effect on the sampling unit 33. Then, the height of the sampling unit 33 is adjusted by the first height adjustment component 313. When the sampling unit 33 is at the target depth, an appropriate number of sampling units 33 are controlled to perform sampling operations. When the sampling unit 33 performs sampling, the position adjustment component 332 is first extended to insert the adjustable sampling tube 331 into the soil on the side wall of the hole for sampling. Then, the adjustable sampling tube 331 is driven by the second driver 334. The cylinder 331 drives the cutting component 335 to rotate and cut the soil, so that the soil collected in the adjustable sampling cylinder 331 is completely retained inside to achieve sampling. After sampling is completed, the position adjustment component 332 is controlled to retract and reset the adjustable sampling cylinder 331. During the process of controlling the first height adjustment component 313 to retract and move the tunneling rotor 321 upward, the user can use the remaining sampling unit 33 to take multiple samples at different heights, so that the sampling device can not only take multiple samples at the same depth, but also take multiple samples at different depths.

[0038] Thus, through the cooperation of multiple structures, the sampling device can accurately sample the soil at the target depth. Furthermore, the sampling device can perform multiple samplings during a single sampling operation to achieve multiple samplings at the same depth to reduce subsequent detection errors, and to sample at different depths to improve sampling efficiency, resulting in better sampling effect. In addition, the present invention has a simple structure and is easy to use.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A civil detection geological sampling device comprising a support base plate, characterized in that: The upper side of the supporting bottom plate is provided with a supporting top plate, the upper surface of the supporting bottom plate is provided with a plurality of first limiting supports for supporting and fixing the supporting top plate, the lower side of the supporting top plate is provided with a sampling mechanism, the sampling mechanism comprises a sampling assembly for sampling and a discharging assembly for height adjustment of the sampling assembly, the sampling assembly is arranged at the bottom of the discharging assembly, the upper surface of the supporting bottom plate is provided with a limiting through hole for accommodating the sampling assembly, the discharging assembly comprises a first limiting mounting plate, the lower surface of the first limiting mounting plate is fixedly connected with a first driver, the lower side of the first driver is provided with a hollow conveying pipe, the output end of the first driver is provided with a spiral conveying piece for cooperating with the hollow conveying pipe to convey soil, the sampling assembly comprises a boring rotor, the boring rotor is rotatably arranged at the bottom of the hollow conveying pipe, the lower surface of the boring rotor is annularly arranged with a plurality of boring racks, the upper side of the boring rotor is provided with a limiting mounting ring fixedly connected with the hollow conveying pipe, the side surface of the limiting mounting ring is annularly arranged with a plurality of sampling units, a plurality of limiting mounting holes corresponding to the sampling units are formed in the limiting mounting ring, the sampling unit comprises a limiting mounting cylinder, the limiting mounting cylinder is fixedly arranged in the limiting mounting ring through the limiting mounting hole, one end of the limiting mounting cylinder close to the hollow conveying pipe is provided with a position adjusting piece, the other end of the limiting mounting cylinder away from the hollow conveying pipe is provided with an adjustable sampling cylinder, the telescopic end of the position adjusting piece is fixedly connected with a second driver for driving the adjustable sampling cylinder to rotate.

2. The civil detection geological sampling device according to claim 1, characterized in that: The output end of the second driver is threadedly connected with the adjustable sampling cylinder, the position adjusting piece is fixedly connected with the limiting mounting cylinder, a plurality of cutting pieces are arranged at the end of the adjustable sampling cylinder away from the second driver, and the cutting pieces are fixedly connected with the adjustable sampling cylinder.

3. The civil detection geological sampling device according to claim 2, characterized in that: The top of the hollow conveying pipe is fixedly connected with a protective guide cover, the top of the protective guide cover is provided with a plurality of second limiting supports corresponding to the first limiting mounting plate, one end of the second limiting support is fixedly connected with the first limiting mounting plate, and the other end of the second limiting support is fixedly connected with the protective guide cover.

4. The civil detection geological sampling device according to claim 3, characterized in that: The upper side of the first driver is provided with a first height adjusting piece for height adjustment of the first limiting mounting plate, the top of the first height adjusting piece is fixedly connected with the supporting top plate, and the bottom of the first height adjusting piece is fixedly connected with the first limiting mounting plate.

5. The civil detection geological sampling device according to claim 4, characterized in that: The upper side of the boring rotor is provided with an adjustable blocking pipe for blocking the opening end of the limiting mounting cylinder, the adjustable blocking pipe is slidably connected with the limiting mounting ring, the upper side of the limiting mounting ring is provided with a limiting transmission disc fixedly connected with the adjustable blocking pipe, and the upper surface of the limiting mounting ring is provided with a plurality of second height adjusting pieces for height adjustment of the adjustable blocking pipe in cooperation with the limiting transmission disc.

6. The civil detection geological sampling device according to claim 5, characterized in that: The upper side of the adjustable blocking pipe is provided with an adjustable protective pipe fixedly connected with the limiting transmission disc, the adjustable protective pipe is fixedly connected with the adjustable blocking pipe, the top of the second height adjusting piece is fixedly connected with the limiting transmission disc, and the bottom of the second height adjusting piece is fixedly connected with the limiting mounting ring.

7. The civil detection geological sampling device according to claim 6, characterized in that: The upper portion of the limiting transmission disc is provided with a limiting protection disc corresponding to the adjustable protection tube, the limiting protection disc is fixed on the top of the adjustable protection tube, the limiting protection disc is in sliding connection with the hollow conveying pipe, and the tunneling rack is fixedly connected with the tunneling rotor.

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