CN112945613B - Tunnel earth sampling device for subway maintenance - Google Patents
Tunnel earth sampling device for subway maintenance Download PDFInfo
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- CN112945613B CN112945613B CN202110110376.8A CN202110110376A CN112945613B CN 112945613 B CN112945613 B CN 112945613B CN 202110110376 A CN202110110376 A CN 202110110376A CN 112945613 B CN112945613 B CN 112945613B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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Abstract
The invention discloses a tunnel soil sampling device for subway maintenance, which comprises a support frame, wherein the top surface of the support frame is fixedly connected with a protection box, the left side surface of the protection box is provided with a sliding groove, the inside of the sliding groove is connected with a connecting rod in a sliding manner, the top surface of the protection box is fixedly connected with a metal cover A, the lower side of the support frame is provided with a soil drilling component, the outer side of the soil drilling component is provided with a soil collecting component, and the top surface of the soil collecting component is provided with a soil scraping component. According to the invention, by optimizing the soil drilling device, when a worker samples soil, the height of the drill bit can be adjusted, so that the soil at different depths can be extracted and then surveyed, by optimizing the soil collecting device, the container for containing the soil can be taken down after soil sampling, and then the soil is inspected, and by adding the soil scraping component, the inner surface of the container for containing the soil can be scraped clean when soil sampling with overhigh humidity is performed.
Description
Technical Field
The invention relates to the technical field of subway maintenance, in particular to a tunnel soil sampling device for subway maintenance.
Background
The subway is a rapid, large-traffic and electric traction rail traffic built in a city, the train runs on a totally-enclosed line, the line positioned in a central urban area is basically arranged in an underground tunnel, the line outside the central urban area is generally arranged on an overhead bridge or the ground, the iron is a special, high-density and high-traffic urban rail traffic system covering various underground and overground road rights in the urban area, and the requirement on the quality of rock and soil is very strict during the construction of the subway, so that the soil in the subway tunnel needs to be sampled, surveyed or checked during the maintenance of the subway.
However, at present, when taking a sample to tunnel earth to subway maintenance, often the manual work carries out the sample detection, do not carry out the automation to the sample, lead to the workman to consume a large amount of time and strength and go to operate, simultaneously when taking a sample, can not dismantle the container that holds the sample soil, lead to follow-up inconvenient to the collection operation of soil, if the soil humidity of collecting is higher, the container that holds the sample soil is difficult to dismantle, can lead to the washing inconvenience of whole device, simultaneously if the humidity of soil is higher, there is a large amount of soil probably to remain on the surface that holds the container of sample soil when collecting, do not scrape the device of getting to soil.
So we propose a tunnel earth sampling device for subway maintenance in order to solve the problems presented in the above.
Disclosure of Invention
The invention aims to provide a tunnel soil sampling device for subway maintenance, which solves the problems that soil sampling cannot be automatically carried out, a sampling container cannot be disassembled and the surface of the container cannot be scraped in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a subway maintenance is with tunnel earth sampling device, includes the support frame, the top surface fixedly connected with protection box of support frame, the spout has been seted up to the left surface of protection box, the inside sliding connection of spout has the connecting rod, the top surface fixedly connected with metal casing A of protection box, the downside of support frame is provided with and bores the soil subassembly, the outside of boring the soil subassembly is provided with album soil subassembly, the top surface of album soil subassembly is provided with scrapes soil subassembly, the top surface fixedly connected with dipperstick of support frame.
As a preferred embodiment of the invention, the soil drilling assembly comprises a motor A fixedly arranged on the inner wall of a metal cover A, an output shaft of the motor A penetrates through the top surface of the metal cover A and is fixedly connected with a threaded rod, the outer surface of the threaded rod is connected with a sliding rod in a meshed manner, and the left side surface of the sliding rod is fixedly connected with the right side surface of the connecting rod.
As a preferred embodiment of the invention, the soil drilling assembly further comprises a metal cover B fixedly connected to the bottom end of the threaded rod, a motor B is fixedly installed in the metal cover B, an output shaft of the motor B penetrates through the bottom end of the metal cover B to the outside of the metal cover B, a drill bit is fixedly connected to the output shaft of the motor B, and two clamping grooves which are bilaterally symmetrical are formed in the outer surface of the drill bit.
As a preferred embodiment of the invention, the bottom end of the threaded rod is rotatably connected with the top surface of the supporting frame, and the outer surface of the sliding rod is in sliding fit with the inner wall of the protection box.
As a preferred embodiment of the invention, the soil collecting assembly comprises a cylinder sleeved on the outer surface of the drill bit, the outer surface of the cylinder is fixedly connected with a soil collecting bucket, the inner wall of the cylinder is fixedly connected with two telescopic rods which are bilaterally symmetrical, the outer surfaces of the telescopic rods are respectively sleeved with a spring A, one ends of the telescopic rods are fixedly connected with clamping blocks, the outer surfaces of the clamping blocks are in sliding fit with clamping grooves, the outer surface of the cylinder is provided with two guide grooves which are bilaterally symmetrical, and one side surface of each clamping block, which is close to each telescopic rod, is fixedly connected with a pull rod.
As a preferred embodiment of the invention, one end of the spring A is fixedly connected with the inner wall of the cylinder, and the other end of the spring A is fixedly connected with one side surface of the clamping block.
As a preferred embodiment of the invention, one end of the pull rod penetrates the guide groove to extend to the outside of the cylinder, and the outer surface of the pull rod is in sliding fit with the inside of the guide groove.
As the preferred implementation mode of the invention, the soil scraping component comprises a connecting block A fixedly connected to the top surface of the soil collecting bucket, a square hole is formed in the front side surface of the connecting block A, a scraper is fixedly connected to the right side surface of the connecting block A, a circular ring is slidingly connected to the inside of the connecting block A, a spring B is sleeved on the outer surface of the circular ring, one end of the spring B is fixedly connected with the front side surface of the connecting block A, the other end of the spring B is fixedly connected with the side surface of the connecting block B, the soil scraping component further comprises a connecting block B slidingly connected to the top surface of the cylinder, the inside of the connecting block B is slidingly matched with the outer surface of the circular ring, a T-shaped rod is rotationally connected to the rear side surface of the connecting block B, and the T-shaped rod is slidingly matched with the square hole.
Compared with the prior art, the invention has the beneficial effects that: through optimizing the soil drilling device, thereby can make the staff when taking out the soil sample, can be through the height of adjusting the drill bit, thereby can draw the soil of different degree of depth department and then survey, through optimizing the album native device, thereby can take off the container that holds soil after soil sampling, and then inspect, through having increased the soil scraping subassembly, thereby when taking out the soil sample that humidity is too high, can scrape the container internal surface that holds soil clean;
1. when the subway is repaired, the motor A is turned on to drive the threaded rod to rotate, so that the sliding rod can move up and down, the metal cover B can be driven to move up and down while the sliding rod moves up and down, the motor B is turned on to drive the drill bit to rotate, soil is conveyed upwards through the blades of the drill bit in the rotating process of the drill bit, and therefore soil can be automatically sampled when soil sampling is needed, soil can be conveyed upwards, and soil with different depths can be sampled;
2. when the sliding rod moves up and down, the sliding rod drives the connecting rod to move up and down in the chute, and the distance of the vertical translation of the connecting rod can be judged according to the scale of the observation measuring ruler, so that the descending distance of the drill bit can be estimated;
3. in the process of upward conveying of soil, as the soil collecting hopper is arranged on the outer side of the drill bit, when the soil is conveyed to the top of the blade through the blade of the drill bit, the soil can fall into the soil collecting hopper, meanwhile, the pull rod is pulled outwards to pull the clamping block out of the clamping groove, the cylinder is taken down, and the soil is collected, so that the soil collecting hopper can be disassembled after the sampling is completed, and then the soil is collected and cleaned;
4. when the soil remained on the inner wall of the soil collecting bucket is not collected, the scraper can rotate on the outer surface of the circular ring for a circle under the action of the spring B by rotating the T-shaped rod, and the soil on the inner wall surface of the soil collecting bucket is scraped clean when the scraper rotates, so that the soil on the inner wall surface of the soil collecting bucket can be automatically scraped clean.
Drawings
Fig. 1 is a perspective view of a tunnel soil sampling device for subway maintenance.
Fig. 2 is a perspective view of a soil drilling assembly of the tunnel soil sampling device for subway maintenance.
Fig. 3 is a perspective view of a soil collecting assembly of the tunnel soil sampling device for subway maintenance.
Fig. 4 is a partially cut-away perspective view of a soil collecting assembly of a tunnel soil sampling device for subway maintenance according to the present invention.
Fig. 5 is a perspective view of a soil scraping assembly of the tunnel soil sampling device for subway maintenance.
Fig. 6 is a perspective view of a part of the construction of a soil scraping assembly of the tunnel soil sampling device for subway maintenance according to the present invention.
In the figure: 1. a support frame; 2. a protection box; 201. a chute; 3. a metal cover A; 4. a soil drilling assembly; 401. a motor A; 402. a threaded rod; 403. a slide bar; 5. a metal cover B; 501. a motor B; 502. a drill bit; 5021. a clamping groove; 6. a connecting rod; 7. a measuring ruler; 8. a soil collecting assembly; 801. a cylinder; 802. a soil collecting bucket; 803. a telescopic rod; 804. a spring A; 805. a clamping block; 806. a guide groove; 807. a pull rod; 9. a soil scraping assembly; 901. a connecting block A; 902. square holes; 903. a scraper; 904. a circular ring; 905. a spring B; 906. a connecting block B; 907. t-shaped bar.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a subway maintenance is with tunnel earth sampling device, including support frame 1, the top surface fixedly connected with protection box 2 of support frame 1, spout 201 has been seted up to the left surface of protection box 2, the inside sliding connection of spout 201 has connecting rod 6, the top surface fixedly connected with metal casing A3 of protection box 2, the downside of support frame 1 is provided with bores soil subassembly 4, the outside of boring soil subassembly 4 is provided with album soil subassembly 8, the top surface of album soil subassembly 8 is provided with scrapes soil subassembly 9, the top surface fixedly connected with dipperstick 7 of support frame 1.
The soil drilling assembly 4 comprises a motor A401 fixedly mounted on the inner wall of the metal cover A3, an output shaft of the motor A401 penetrates through the top surface of the metal cover A3 and is fixedly connected with a threaded rod 402, the outer surface of the threaded rod 402 is connected with a sliding rod 403 in a meshed mode, the left side surface of the sliding rod 403 is fixedly connected with the right side surface of the connecting rod 6, and the motor A401 drives the threaded rod 402 to rotate so as to drive the sliding rod 403 to lift.
The drilling assembly 4 further comprises a metal cover B5 fixedly connected to the bottom end of the threaded rod 402, a motor B501 is fixedly installed in the metal cover B5, an output shaft of the motor B501 penetrates through the bottom end of the metal cover B5 to the outside of the metal cover B, a drill bit 502 is fixedly connected to the output shaft of the motor B501, two clamping grooves 5021 which are bilaterally symmetrical are formed in the outer surface of the drill bit 502, and the drilling assembly 4 is arranged, so that the drill bit 502 can be driven to rotate and lift when the sliding rod 403 lifts.
The bottom of threaded rod 402 rotates with the top surface of support frame 1 to be connected, and the surface of slide bar 403 and the inner wall sliding fit of protection box 2 to make threaded rod 402 pivoted more stable, protection box 2 has the spacing effect to slide bar 403 simultaneously.
The soil collecting assembly 8 comprises a cylinder 801 sleeved on the outer surface of the drill bit 502, the outer surface of the cylinder 801 is fixedly connected with a soil collecting bucket 802, the inner wall of the cylinder 801 is fixedly connected with two telescopic rods 803 which are bilaterally symmetrical, the outer surfaces of the telescopic rods 803 are sleeved with springs A804, one end of each telescopic rod 803 is fixedly connected with a clamping block 805, the outer surfaces of the clamping blocks 805 are slidably matched with clamping grooves 5021, two guide grooves 806 which are bilaterally symmetrical are formed in the outer surface of the cylinder 801, one side surface of the clamping block 805, close to the telescopic rods 803, is fixedly connected with a pull rod 807, and the soil collecting assembly 8 is arranged, so that the drill bit 502 can automatically sample soil when sampling is carried out, the soil collecting bucket 802 can be detached, and after soil sampling is completed, soil can be collected and detected.
One end of the spring A804 is fixedly connected with the inner wall of the cylinder 801, and the other end of the spring A804 is fixedly connected with one side surface of the clamping block 805, so that the clamping block 805 can be fixed in the clamping groove 5021 under the action of the spring A804.
One end of the pull rod 807 extends through the guide slot 806 to the exterior of the barrel 801 and the outer surface of the pull rod 807 slidably engages the interior of the guide slot 806, with the pull rod 807 being external, so that the pull rod 807 can be manipulated on the exterior of the barrel 801.
The soil scraping assembly 9 comprises a connecting block A901 fixedly connected to the top surface of the soil collecting bucket 802, a square hole 902 is formed in the front side surface of the connecting block A901, a scraper 903 is fixedly connected to the right side surface of the connecting block A901, a circular ring 904 is slidably connected to the inside of the connecting block A901, a spring B905 is sleeved on the outer surface of the circular ring 904, one end of the spring B905 is fixedly connected to the front side surface of the connecting block A901, the other end of the spring B905 is fixedly connected to the side surface of the connecting block B906, the soil scraping assembly 9 further comprises a connecting block B906 slidably connected to the top surface of the cylinder 801, the inside of the connecting block B906 is slidably matched with the outer surface of the circular ring 904, a T-shaped rod 907 is rotatably connected to the rear side surface of the connecting block B906, and the square hole 902 is slidably matched with the T-shaped rod 907, and the soil scraping assembly 9 is arranged, so that when soil with high humidity is sampled, the soil on the inner surface of the soil collecting bucket 802 can be scraped.
The working principle of the embodiment is as follows: according to fig. 1-2, when the subway tunnel soil is to be repaired, the support frame 1 is placed on the ground of the part to be sampled, then the motor a401 is turned on to drive the threaded rod 402 to rotate, because the sliding rod 403 is meshed with the threaded rod 402, and because the protective box 2 limits the sliding rod 403, the sliding rod 403 moves up and down in the process of rotating the threaded rod 402, because the bottom end of the sliding rod 403 is fixedly connected with the metal cover B5, the sliding rod 403 moves up and down and drives the metal cover B5 to move up and down, the connecting rod 6 also moves up and down in the chute 201 while the sliding rod 403 moves up and down, the distance of the vertical translation of the connecting rod 6 can be judged according to the scale of the observation measuring scale 7, the descending distance of the drill bit 502 can be estimated, and meanwhile, the motor B501 is turned on to drive the drill bit 502 to rotate, and because the blades of the drill bit 502 are in vortex-packed, the soil can be conveyed up through the blades of the drill bit 502 in the process of rotating, so that the soil can be sampled automatically in the process of soil sampling is required, and simultaneously the soil can be sampled up and sampled at different depths can be sampled.
According to fig. 1 and 3-4, in the process of upward conveying of soil, since the soil collecting hopper 802 is arranged on the outer side of the drill bit 502, when the soil is conveyed to the top of the blade through the blade of the drill bit 502, the soil falls into the soil collecting hopper 802 due to the action of gravity, then the motor B501 is turned off, the motor a401 is reversed to lift the drill bit 502 to the bottom surface, then the pull rod 807 is simultaneously pulled outwards, the clamping block 805 is pulled out of the clamping groove 5021, then the cylinder 801 is taken down to collect the soil, after the collection is completed, the pull rod 807 is pulled, the cylinder 801 is moved upwards from the bottom of the drill bit 502, the pull rod 807 is released when the clamping block 805 reaches the same plane of the clamping groove 5021, the clamping block 805 stretches into the clamping groove 5021 to be fixed under the action of the spring a804 and the telescopic rod 803, and then the next sampling is performed, so that the soil collecting hopper 802 can be disassembled after the sampling is completed, and then the collection and cleaning are performed;
according to fig. 1 and fig. 5 to 6, when the soil remained on the inner wall of the soil collecting bucket 802 is not collected, the scraper 903 rotates around the outer surface of the circular ring 904 under the action of the spring B905 by rotating the T-shaped rod 907, the soil on the inner wall surface of the soil collecting bucket 802 is scraped clean when the scraper 903 rotates, then the T-shaped rod 907 is stretched into the square hole 902, and then the T-shaped rod 907 is rotated to fix the connecting block a901 and the connecting block B906, so that the soil on the inner wall surface of the soil collecting bucket 802 can be scraped clean automatically.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (1)
1. The utility model provides a subway maintenance is with tunnel earth sampling device, includes support frame (1), its characterized in that: the novel soil-scraping device comprises a supporting frame (1), wherein a protective box (2) is fixedly connected to the top surface of the supporting frame (1), a sliding groove (201) is formed in the left side surface of the protective box (2), a connecting rod (6) is connected to the inside of the sliding groove (201) in a sliding mode, a metal cover A (3) is fixedly connected to the top surface of the protective box (2), a soil-drilling assembly (4) is arranged on the lower side of the supporting frame (1), a soil-collecting assembly (8) is arranged on the outer side of the soil-drilling assembly (4), a soil-scraping assembly (9) is arranged on the top surface of the soil-collecting assembly (8), and a measuring scale (7) is fixedly connected to the top surface of the supporting frame (1);
the soil drilling assembly (4) comprises a motor A (401) fixedly arranged on the inner wall of the metal cover A (3), an output shaft of the motor A (401) penetrates through the top surface of the metal cover A (3) and is fixedly connected with a threaded rod (402), the outer surface of the threaded rod (402) is connected with a sliding rod (403) in a meshed mode, and the left side surface of the sliding rod (403) is fixedly connected with the right side surface of the connecting rod (6);
the soil drilling assembly (4) further comprises a metal cover B (5) fixedly connected to the bottom end of the threaded rod (402), a motor B (501) is fixedly arranged in the metal cover B (5), an output shaft of the motor B (501) penetrates through the bottom end of the metal cover B (5) to the outside of the metal cover B, a drill bit (502) is fixedly connected to the output shaft of the motor B (501), and two clamping grooves (5021) which are bilaterally symmetrical are formed in the outer surface of the drill bit (502);
the bottom end of the threaded rod (402) is rotationally connected with the top surface of the support frame (1), and the outer surface of the sliding rod (403) is in sliding fit with the inner wall of the protection box (2);
the soil collecting assembly (8) comprises a cylinder (801) sleeved on the outer surface of the drill bit (502), the outer surface of the cylinder (801) is fixedly connected with a soil collecting bucket (802), the inner wall of the cylinder (801) is fixedly connected with two telescopic rods (803) which are bilaterally symmetrical, the outer surfaces of the telescopic rods (803) are sleeved with springs A (804), one ends of the telescopic rods (803) are fixedly connected with clamping blocks (805), the outer surfaces of the clamping blocks (805) are in sliding fit with clamping grooves (5021), the outer surfaces of the cylinder (801) are provided with two guide grooves (806) which are bilaterally symmetrical, and one side surface, close to the telescopic rods (803), of each clamping block (805) is fixedly connected with a pull rod (807);
one end of the spring A (804) is fixedly connected with the inner wall of the cylinder (801), and the other end of the spring A (804) is fixedly connected with one side surface of the clamping block (805);
one end of the pull rod (807) penetrates through the guide groove (806) to extend to the outside of the cylinder (801), and the outer surface of the pull rod (807) is in sliding fit with the inside of the guide groove (806);
the soil scraping assembly (9) comprises a connecting block A (901) fixedly connected to the top surface of a soil collecting bucket (802), a square hole (902) is formed in the front side surface of the connecting block A (901), a scraper (903) is fixedly connected to the right side surface of the connecting block A (901), a circular ring (904) is connected to the inside of the connecting block A (901) in a sliding mode, a spring B (905) is sleeved on the outer surface of the circular ring (904), one end of the spring B (905) is fixedly connected with the front side surface of the connecting block A (901), the other end of the spring B (905) is fixedly connected with the side surface of the connecting block B (906), the soil scraping assembly (9) further comprises a connecting block B (906) which is connected to the top surface of a cylinder (801) in a sliding mode, a T-shaped rod (907) is connected to the rear side surface of the connecting block B (906) in a sliding mode, and the T-shaped rod (907) is in sliding mode with the square hole (902);
when the subway is repaired, when the soil of a subway tunnel needs to be collected and detected, the support frame (1) is placed on the ground of a part needing to be sampled, then the motor A (401) is opened to drive the threaded rod (402) to rotate, the sliding rod (403) is meshed with the threaded rod (402), and the protection box (2) is in limit effect on the sliding rod (403), so that in the rotating process of the threaded rod (402), the sliding rod (403) moves up and down, the bottom end of the sliding rod (403) is fixedly connected with the metal cover B (5), so that the sliding rod (403) moves up and down while driving the metal cover B (5) to move up and down, the connecting rod (6) also moves up and down in the chute (201) while the sliding rod (403) moves up and down, the vertical translation distance of the connecting rod (6) can be judged according to the scale of the observation measuring ruler (7), and then the descending distance of the drill bit (502) can be estimated, the motor B (501) is opened to drive the drill bit (502) to rotate, and the drill bit (502) is in the rotating process, and the drill bit (502) is in the vortex, so that the soil can be automatically sampled in the rotating process, and the soil can be sampled up and the soil can be sampled simultaneously, and the soil can be sampled up and sampled by the soil can not needed;
in the process of upward conveying of soil, as the soil collecting hopper (802) is arranged on the outer side of the drill bit (502), when the soil is conveyed to the top of the blade through the blade of the drill bit (502), the soil can fall into the soil collecting hopper (802) due to the action of gravity, then the motor B (501) is turned off, the motor A (401) is used for lifting the drill bit (502) to the bottom surface, then the pull rod (807) is simultaneously pulled outwards, the clamping block (805) is pulled out of the clamping groove (5021), then the cylinder (801) is taken down to collect the soil, after the collection is completed, the pull rod (807) is pulled, the cylinder (801) is moved upwards from the bottom of the drill bit (502), the pull rod (807) is loosened when the clamping block (805) reaches the same plane of the clamping groove (5021), and under the action of the spring A (804) and the telescopic rod (803), the clamping block (805) can extend into the clamping groove (5021) to be fixed, and then the soil collecting hopper (802) can be detached after the next sampling is completed, and then the collection and cleaning are carried out;
when soil remains on the inner wall of the soil collecting bucket (802) and is not collected completely, the scraper (903) can rotate on the outer surface of the circular ring (904) for one circle under the action of the spring B (905), the soil on the inner wall surface of the soil collecting bucket (802) is scraped completely when the scraper (903) rotates, then the T-shaped rod (907) stretches into the square hole (902), and then the T-shaped rod (907) is rotated to fix the connecting block A (901) and the connecting block B (906), so that the soil on the inner wall surface of the soil collecting bucket (802) can be scraped completely automatically.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110110376.8A CN112945613B (en) | 2021-01-27 | 2021-01-27 | Tunnel earth sampling device for subway maintenance |
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| CN202110110376.8A CN112945613B (en) | 2021-01-27 | 2021-01-27 | Tunnel earth sampling device for subway maintenance |
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| CN114609371B (en) * | 2022-05-11 | 2022-07-26 | 江苏鸿灌环境集团有限公司 | Soil detection device with soil layering and extracting functions |
| CN116358922B (en) * | 2023-03-29 | 2023-11-21 | 江苏省中成建设工程总公司 | Soil detection device for ecological restoration |
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| CN206258275U (en) * | 2016-11-24 | 2017-06-16 | 华侨大学 | Portable seashore wetland sediment sampler |
| CN207036474U (en) * | 2017-08-10 | 2018-02-23 | 天津地德利土壤修复科技有限责任公司 | A kind of soil remediation sampler |
| CN107807009A (en) * | 2017-12-12 | 2018-03-16 | 南京市雨花台区创新创业法治宣传与法律服务中心 | A kind of Soil K+adsorption drawing out soil equipment with weeding function |
| CN109884270B (en) * | 2019-02-23 | 2021-10-29 | 河南城建学院 | Soil measuring device for land planning |
| CN210533755U (en) * | 2019-08-23 | 2020-05-15 | 天津市安基工程监测技术有限公司 | Geotechnical sampling device for metro survey |
| CN110967215A (en) * | 2019-11-25 | 2020-04-07 | 湖北大学 | Biological science soil sampling test device |
| KR102142422B1 (en) * | 2020-01-20 | 2020-08-10 | 국립생태원 | Uncompacted hand-hammer subaerial piston core sampler and the method |
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