CN214066565U - Geotechnical engineering reconnaissance probing sampling device that fetches earth - Google Patents
Geotechnical engineering reconnaissance probing sampling device that fetches earth Download PDFInfo
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- CN214066565U CN214066565U CN202023292495.XU CN202023292495U CN214066565U CN 214066565 U CN214066565 U CN 214066565U CN 202023292495 U CN202023292495 U CN 202023292495U CN 214066565 U CN214066565 U CN 214066565U
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Abstract
The utility model discloses a geotechnical engineering investigation drilling and soil sampling device, in particular to the technical field of geological exploration devices, which comprises a fixed box, wherein an adjusting mechanism is arranged inside the fixed box; the adjusting mechanism comprises a first motor, a driving belt pulley is fixedly arranged at the output end of the first motor, secondary moving belt pulleys are arranged on two sides of the driving belt pulley, and a transmission belt is connected between the driving belt pulley and the secondary moving belt pulleys in a transmission mode. The utility model discloses a set up adjustment mechanism and power unit, this device does not need artifical promotion downwards to take the sample, has saved the manpower to because triple structure provides decurrent pressure simultaneously and makes it can break into comparatively hard rock, can sample in the geological conditions of various complicacies, not only confine to sampling in soil.
Description
Technical Field
The utility model relates to a geological exploration device technical field, more specifically say, the utility model relates to a geotechnical engineering reconnaissance probing sampling device that fetches earth.
Background
Geological exploration is investigation and research activities of surveying and detecting geology through various means and methods, determining a proper bearing stratum, determining a foundation type according to the foundation bearing capacity of the bearing stratum and calculating foundation parameters. The method is to find an industrially significant mineral deposit in mineral census, provide mineral reserves and geological data required by mine construction design for finding out the quality and quantity of the mineral and technical conditions of mining and utilization, and carry out investigation and research work on geological conditions such as rocks, strata, structures, mineral products, hydrology, landforms and the like in a certain area.
In the geological exploration device on the market at present, if the device meets the condition of hard geological condition during sampling, the sampling failure can be caused, or the sampling can not be carried out, and the device can not be fixed under the condition of hard geological condition at all, so the sampling failure is caused.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a geotechnical engineering reconnaissance probing sampling device that fetches earth, through setting up adjustment mechanism and power unit, this device does not need artifical promotion downwards to take the sample, the manpower has been saved, and because the triple structure provides decurrent pressure simultaneously and makes it can break into comparatively hard rock, can sample in the geological conditions of various complicacies, not only confine to and sample in soil, in order to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a geotechnical engineering investigation, drilling, soil sampling and sampling device comprises a fixed box, wherein an adjusting mechanism is arranged inside the fixed box;
the adjusting mechanism comprises a first motor, a driving belt pulley is fixedly arranged at the output end of the first motor, secondary belt pulleys are arranged on two sides of the driving belt pulley, a transmission belt is connected between the driving belt pulley and the secondary belt pulleys in a transmission manner, a screw rod is fixedly arranged at the bottom of the secondary belt pulley, a first bearing is movably connected between the screw rod and a fixed box, a second bearing is fixedly arranged at the bottom of the screw rod, a supporting seat is fixedly arranged at the bottom of the second bearing, the supporting seat is fixedly connected with the fixed box, a threaded sleeve is in threaded connection with the outside of the screw rod, a supporting rod is fixedly arranged on one side of the threaded sleeve, and a power mechanism is arranged on one side of the supporting rod;
the power mechanism comprises a power box, a third bearing is fixedly arranged on one side of the inner wall of the power box, a first connecting rod is fixedly arranged inside the third bearing, a first gear is fixedly arranged on the outer side of the first connecting rod, a first bevel gear is fixedly arranged at one end of the first connecting rod, a second motor is arranged at the top of the first connecting rod and is fixedly connected with the power box, a second gear is fixedly arranged at the output end of the second motor, a crankshaft connecting rod is fixedly arranged on one side of the second gear, a first movable rod is fixedly arranged at the bottom of the crankshaft connecting rod, a second movable rod is hinged at the bottom of the first movable rod, a push rod is fixedly arranged at the bottom of the second movable rod, a pipeline is arranged on the outer side of the push rod, a second bevel gear is fixedly arranged on the outer side of the pipeline, the second bevel gear is meshed with the first bevel gear, and a fourth bearing is movably connected between the pipeline and the power box, be equipped with between catch bar and the pipeline and promote the piece, it is equipped with the spring leaf to promote the piece bottom, swing joint has the spring between spring leaf and the pipeline, the fixed depression bar that is equipped with in spring leaf bottom, the fixed pneumatic cylinder that is equipped with in depression bar bottom, the fixed drilling rod that is equipped with in pneumatic cylinder top, the fixed drill bit that is equipped with in drilling rod bottom, the drilling bit top is equipped with the sample piece, drilling rod and sample piece fixed connection.
In a preferred embodiment, a fixing mechanism is arranged on one side of the supporting seat, and the fixing mechanism comprises a fixing plate which is fixedly connected with the supporting seat.
In a preferred embodiment, an electric telescopic rod is fixedly arranged at the bottom of the fixing plate, and a lifting plate is fixedly arranged at the bottom of the electric telescopic rod.
In a preferred embodiment, a third motor is fixedly arranged at the top of the lifting plate, and a fixed drill bit is fixedly arranged at the output end of the motor, penetrates through the lifting plate and extends to the bottom of the lifting plate.
In a preferred embodiment, a sliding rod is fixedly arranged on one side of the lifting plate, and a sliding block is fixedly arranged on one side of the sliding rod.
In a preferred embodiment, a sliding groove is formed on one side surface of the support seat, and the sliding groove is connected with the sliding block in a sliding mode.
In a preferred embodiment, the number of the springs is provided in plural, and the pipe cross-sectional shape is provided in a convex shape.
In a preferred embodiment, the number of the supporting seats is two, and the cross-sectional shape of the supporting seat is an L-shape.
The utility model discloses a technological effect and advantage:
1. by arranging the adjusting mechanism and the power mechanism, the first motor can drive the driving belt pulley to rotate, the transmission belt can drive the two secondary movable belt pulleys to rotate, so that the secondary movable belt pulleys can drive the screw rods to rotate, the threaded sleeves in threaded connection with the two screw rods can drive the support rod and the power box to move downwards, pressure of first downward movement is provided for the drill bit, the drill bit is broken into rock soil, then the second motor operates to drive the first gear to rotate, then the second gear rotates to drive the first connecting rod to rotate, simultaneously the first bevel gear rotates to drive the pipeline to rotate, the pipeline drives the pressure rod, the hydraulic cylinder, the drill rod and the drill bit to rotate, meanwhile, the first gear rotates to drive the crankshaft connecting rod to rotate, the crankshaft connecting rod can drive the first movable rod and the second movable rod, the push rod does reciprocating motion, and the push block at the bottom of the push rod can push the spring piece back and forth, the device has the advantages that the second section of pressure is provided for the drill bit to break into rock and soil, then the hydraulic cylinder can extend downwards to provide the third section of downward pressure for the drill bit, then the drill bit reaches the surveying position, the first motor and the second motor rotate reversely, the hydraulic cylinder contracts, and the sampling block can be brought back to the rock and soil sample;
2. through setting up fixed establishment, at first open the third motor, the third motor can drive fixed drill bit and rotate, the electric telescopic handle of while fixed plate bottom can extend, because the fixed lifter plate that is equipped with in electric telescopic handle bottom, lifter plate one side is equipped with slide bar and slider again, the slider can slide at the spout on supporting seat surface, thereby electric telescopic handle can drive the lifter plate downstream, fixed drill bit also can follow the lifter plate downstream in the pivoted, thereby make the device can fix among the ground, compared with the prior art, the novel fixed function that is applicable to of this example in various geological conditions, can be at the stability that improves the device at the during operation, prevent that the sampling process device is unstable and lead to the sampling failure, can improve the efficiency of sampling.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of a partial structure at a in fig. 1 according to the present invention.
Fig. 3 is a schematic view of a partial structure at B in fig. 1 according to the present invention.
Fig. 4 is a schematic view of a partial structure at C in fig. 1 according to the present invention.
The reference signs are: 1. a fixing box; 2. a first motor; 3. a drive pulley; 4. a secondary movable belt pulley; 5. a drive belt; 6. a screw; 7. a first bearing; 8. a second bearing; 9. a supporting seat; 10. a threaded sleeve; 11. a support bar; 12. a power cartridge; 13. a third bearing; 14. a first connecting rod; 15. a first gear; 16. a first bevel gear; 17. a second motor; 18. a second gear; 19. a crankshaft connecting rod; 20. A first movable bar; 21. a second movable bar; 22. a push rod; 23. a pipeline; 24. a second bevel gear; 25. a pushing block; 26. a spring plate; 27. a spring; 28. a pressure lever; 29. a hydraulic cylinder; 30. a drill stem; 31. a drill bit; 32. sampling blocks; 33. a fixing plate; 34. an electric telescopic rod; 35. a lifting plate; 36. A third motor; 37. fixing a drill bit; 38. a slide bar; 39. a slider; 40. a chute; 41. and a fourth bearing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The geotechnical engineering investigation, drilling and soil sampling device comprises a fixed box 1, wherein an adjusting mechanism is arranged in the fixed box 1;
the adjusting mechanism comprises a first motor 2, a driving belt pulley 3 is fixedly arranged at the output end of the first motor 2, secondary movable belt pulleys 4 are arranged on two sides of the driving belt pulley 3, a transmission belt 5 is connected between the driving belt pulley 3 and the secondary movable belt pulleys 4 in a transmission manner, a screw 6 is fixedly arranged at the bottom of each secondary movable belt pulley 4, a first bearing 7 is movably connected between the screw 6 and the fixed box 1, a second bearing 8 is fixedly arranged at the bottom of the screw 6, a supporting seat 9 is fixedly arranged at the bottom of the second bearing 8, the supporting seat 9 is fixedly connected with the fixed box 1, a threaded sleeve 10 is in threaded connection with the outer part of the screw 6, a supporting rod 11 is fixedly arranged on;
the power mechanism comprises a power box 12, a third bearing 13 is fixedly arranged on one side of the inner wall of the power box 12, a first connecting rod 14 is fixedly arranged inside the third bearing 13, a first gear 15 is fixedly arranged on the outer side of the first connecting rod 14, a first bevel gear 16 is fixedly arranged at one end of the first connecting rod 14, a second motor 17 is arranged at the top of the first connecting rod 14, the second motor 17 is fixedly connected with the power box 12, a second gear 18 is fixedly arranged at the output end of the second motor 17, a crankshaft connecting rod 19 is fixedly arranged on one side of the second gear 18, a first movable rod 20 is fixedly arranged at the bottom of the crankshaft connecting rod 19, a second movable rod 21 is hinged at the bottom of the first movable rod 20, a push rod 22 is fixedly arranged at the bottom of the second movable rod 21, a pipeline 23 is arranged on the outer side of the push rod 22, a second bevel gear 24 is fixedly arranged on the outer side of the pipeline 23, the second bevel gear 24 is meshed with the first bevel gear 16, a fourth bearing 41 is movably connected between the pipeline 23 and the power box 12, a pushing block 25 is arranged between the pushing rod 22 and the pipeline 23, a spring piece 26 is arranged at the bottom of the pushing block 25, a spring 27 is movably connected between the spring piece 26 and the pipeline 23, a pressing rod 28 is fixedly arranged at the bottom of the spring piece 26, a hydraulic cylinder 29 is fixedly arranged at the bottom of the pressing rod 28, a drill rod 30 is fixedly arranged at the top of the hydraulic cylinder 29, a drill bit 31 is fixedly arranged at the bottom of the drill rod 30, a sampling block 32 is arranged at the top of the drill bit 31, and the drill rod 30 is fixedly connected with the sampling block 32.
As shown in fig. 1 and 4, a fixing mechanism is disposed on one side of the supporting seat 9, the fixing mechanism includes a fixing plate 33, and the fixing plate 33 is fixedly connected to the supporting seat 9, so as to facilitate fixing of the whole device by the fixing plate 33.
As shown in fig. 1 and 4, an electric telescopic rod 34 is fixedly arranged at the bottom of the fixing plate 33, and a lifting plate 35 is fixedly arranged at the bottom of the electric telescopic rod 34, so that the lifting plate 35 of the fixing device can be conveniently adjusted downwards, and the lifting plate can be conveniently lifted when the work is completed.
As shown in fig. 1 and 4, a third motor 36 is fixedly arranged at the top of the lifting plate 35, a fixed drill bit 37 is fixedly arranged at the output end of the motor, and the fixed drill bit 37 penetrates through the lifting plate 35 and extends to the bottom of the lifting plate 35, so that the device can be conveniently fixed to the ground by the fixed drill bit 37 under the hard geological condition.
As shown in fig. 1 and 4, a sliding rod 38 is fixedly disposed on one side of the lifting plate 35, and a sliding block 39 is fixedly disposed on one side of the sliding rod 38, so that the lifting plate 35 and the supporting seat 9 can be connected together in a sliding manner.
As shown in fig. 1 and 4, a sliding groove 40 is formed on one side surface of the support seat, and the sliding groove 40 is slidably connected with the sliding block 39, so that the sliding block 39 can slide on the sliding groove 40.
As shown in fig. 3, the number of the springs 27 is set to be plural, and the cross-sectional shape of the pipe 23 is set to be convex, so that the secondary pressure can be better provided to the drill 31 to penetrate into the ground.
As shown in the attached figure 1, the number of the supporting seats 9 is two, and the cross section of each supporting seat 9 is L-shaped, so that the stability of the device is improved conveniently.
The utility model discloses the theory of operation: when the novel drilling machine works, the first motor 2 is firstly turned on, the first motor 2 drives the driving belt pulley 3 to rotate, the driving belt pulley 3 is in transmission connection with the secondary movable belt pulley 4 through the transmission belt 5, so the transmission belt 5 drives the two secondary movable belt pulleys 4 to rotate, the screw 6 connected with the secondary movable belt pulley 4 is fixed through the first bearing 7 and the second bearing 8 in sequence, the secondary movable belt pulley 4 drives the screw 6 to rotate, the threaded sleeves 10 in threaded connection with the two screws 6 move downwards at the same time, the support rod 11 connected with the threaded sleeves 10 and the power box 12 connected with the support rod 11 move downwards at the same time, so that the drill 31 is provided with pressure moving downwards, then the second motor 17 operates to drive the first gear 15 to rotate, the second gear 18 meshed with the first gear 15 rotates to drive the first connecting rod 14 to rotate, and simultaneously the first bevel gear 16 on one side of the first connecting rod 14 rotates to drive the pipeline 23 to rotate, the pipeline 23 drives the pressure lever 28, the hydraulic cylinder 29, the drill rod 30 and the drill bit 31 to rotate, the first gear 15 drives the crankshaft connecting rod 19 to rotate when rotating, the crankshaft connecting rod 19 drives the first movable rod 20 and the second movable rod 21 hinged with the first movable rod 20, and then drives the pushing rod 22 fixed by the second movable rod 21 to reciprocate, so that the pushing block 25 at the bottom of the pushing rod 22 presses the spring piece 26 back and forth to provide downward pressure for the drill bit 31, the spring 27 enables the spring piece 26 to automatically rebound when the pushing block 25 moves upwards, the pushing block 25 provides downward pressure again when moving downwards, then the hydraulic cylinder 29 extends downwards to provide downward pressure for the drill bit 31 again, then the drill bit 31 reaches a surveying position, the first motor 2 and the second motor 17 rotate reversely, the hydraulic cylinder 29 contracts, and the sampling block 32 brings back to a rock and soil sample;
when fixing, at first open third motor 36, third motor 36 can drive fixed drill bit 37 and rotate, the electric telescopic handle 34 of fixed plate 33 bottom can extend simultaneously, because the fixed lifter plate 35 that is equipped with in electric telescopic handle 34 bottom, lifter plate 35 one side is equipped with slide bar 38 and slider 39 again, slider 39 can slide at the spout 40 on supporting seat 9 surface, thereby electric telescopic handle 34 can drive lifter plate 35 downstream, fixed drill bit 37 also can follow lifter plate 35 downstream in the pivoted, thereby make the device fix in the ground.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a geotechnical engineering reconnaissance probing sampling device that fetches earth, includes fixed box (1), its characterized in that: an adjusting mechanism is arranged inside the fixed box (1);
the adjusting mechanism comprises a first motor (2), a driving belt pulley (3) is fixedly arranged at the output end of the first motor (2), secondary movable belt pulleys (4) are respectively arranged at two sides of the driving belt pulley (3), a transmission belt (5) is connected between the driving belt pulley (3) and the secondary movable belt pulleys (4) in a transmission way, a screw rod (6) is fixedly arranged at the bottom of the secondary movable belt pulley (4), a first bearing (7) is fixedly connected between the screw rod (6) and the fixed box (1), a second bearing (8) is fixedly arranged at the bottom of the screw rod (6), a supporting seat (9) is fixedly arranged at the bottom of the second bearing (8), the supporting seat (9) is fixedly connected with the fixed box (1), the outer part of the screw rod (6) is in threaded connection with a threaded sleeve (10), a support rod (11) is fixedly arranged on one side of the threaded sleeve (10), and a power mechanism is arranged on one side of the support rod (11);
the power mechanism comprises a power box (12), a third bearing (13) is fixedly arranged on one side of the inner wall of the power box (12), a first connecting rod (14) is fixedly arranged inside the third bearing (13), a first gear (15) is fixedly arranged on the outer side of the first connecting rod (14), a first bevel gear (16) is fixedly arranged at one end of the first connecting rod (14), a second motor (17) is arranged at the top of the first connecting rod (14), the second motor (17) is fixedly connected with the power box (12), a second gear (18) is fixedly arranged at the output end of the second motor (17), a crankshaft connecting rod (19) is fixedly arranged on one side of the second gear (18), a first movable rod (20) is fixedly arranged at the bottom of the crankshaft connecting rod (19), a second movable rod (21) is hinged to the bottom of the first movable rod (20), a push rod (22) is fixedly arranged at the bottom of the second movable rod (21), the utility model discloses a pipeline, including catch bar (22), pipeline (23) outside is fixed and is equipped with second bevel gear (24), second bevel gear (24) and first bevel gear (16) meshing, swing joint has fourth bearing (41) between pipeline (23) and power box (12), be equipped with between catch bar (22) and pipeline (23) and promote piece (25), it is equipped with spring leaf (26) to promote piece (25) bottom, swing joint has spring (27) between spring leaf (26) and pipeline (23), spring leaf (26) bottom is fixed and is equipped with depression bar (28), depression bar (28) bottom is fixed and is equipped with pneumatic cylinder (29), fixed drilling rod (30) that is equipped with in pneumatic cylinder (29) top, fixed drill bit (31) that is equipped with in drilling rod (30) bottom, drill bit (31) top is equipped with sampling block (32), the drill rod (30) is fixedly connected with the sampling block (32).
2. The geotechnical engineering investigation, drilling and soil sampling device of claim 1, wherein: supporting seat (9) one side is equipped with fixed establishment, fixed establishment includes fixed plate (33), fixed plate (33) and supporting seat (9) fixed connection.
3. The geotechnical engineering investigation, drilling and soil sampling device of claim 2, wherein: the fixed plate (33) bottom is fixed and is equipped with electric telescopic handle (34), electric telescopic handle (34) bottom is fixed and is equipped with lifter plate (35).
4. The geotechnical engineering investigation, drilling and soil sampling device of claim 3, wherein: the fixed third motor (36) that is equipped with in lifter plate (35) top, third motor (36) output end is fixed and is equipped with fixed drill bit (37), fixed drill bit (37) run through lifter plate (35) and extend to lifter plate (35) bottom.
5. The geotechnical engineering investigation, drilling and soil sampling device of claim 3, wherein: a sliding rod (38) is fixedly arranged on one side of the lifting plate (35), and a sliding block (39) is fixedly arranged on one side of the sliding rod (38).
6. The geotechnical engineering investigation, drilling and soil sampling device of claim 1, wherein: a sliding groove (40) is formed in the surface of one side of the supporting seat (9), and the sliding groove (40) is connected with the sliding block (39) in a sliding mode.
7. The geotechnical engineering investigation, drilling and soil sampling device of claim 1, wherein: the number of the springs (27) is set to be a plurality, and the cross section of the pipeline (23) is set to be convex.
8. The geotechnical engineering investigation, drilling and soil sampling device of claim 1, wherein: the number of the supporting seats (9) is two, and the cross section of each supporting seat (9) is L-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023292495.XU CN214066565U (en) | 2020-12-31 | 2020-12-31 | Geotechnical engineering reconnaissance probing sampling device that fetches earth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023292495.XU CN214066565U (en) | 2020-12-31 | 2020-12-31 | Geotechnical engineering reconnaissance probing sampling device that fetches earth |
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| CN214066565U true CN214066565U (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023292495.XU Active CN214066565U (en) | 2020-12-31 | 2020-12-31 | Geotechnical engineering reconnaissance probing sampling device that fetches earth |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984433A (en) * | 2021-10-29 | 2022-01-28 | 中兵勘察设计研究院有限公司 | Detection equipment for rock and soil component analysis |
| CN114593935A (en) * | 2022-01-20 | 2022-06-07 | 徐仰玲 | Geological exploration soil sampling method |
| CN115467315A (en) * | 2022-09-21 | 2022-12-13 | 鲁东大学 | Ocean full-automatic spherical sounding device |
| CN115655792A (en) * | 2022-12-07 | 2023-01-31 | 射阳县沿海投资有限公司 | Underground water excavation sampling device based on port infrastructure construction |
| CN113984433B (en) * | 2021-10-29 | 2024-05-03 | 中兵勘察设计研究院有限公司 | Detection equipment for rock and soil component analysis |
-
2020
- 2020-12-31 CN CN202023292495.XU patent/CN214066565U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113984433A (en) * | 2021-10-29 | 2022-01-28 | 中兵勘察设计研究院有限公司 | Detection equipment for rock and soil component analysis |
| CN113984433B (en) * | 2021-10-29 | 2024-05-03 | 中兵勘察设计研究院有限公司 | Detection equipment for rock and soil component analysis |
| CN114593935A (en) * | 2022-01-20 | 2022-06-07 | 徐仰玲 | Geological exploration soil sampling method |
| CN114593935B (en) * | 2022-01-20 | 2023-08-25 | 广东省科达水利电力岩土工程有限公司 | Geological investigation soil sampling method |
| CN115467315A (en) * | 2022-09-21 | 2022-12-13 | 鲁东大学 | Ocean full-automatic spherical sounding device |
| CN115467315B (en) * | 2022-09-21 | 2024-01-16 | 鲁东大学 | Ocean full-automatic spherical touch detection device |
| CN115655792A (en) * | 2022-12-07 | 2023-01-31 | 射阳县沿海投资有限公司 | Underground water excavation sampling device based on port infrastructure construction |
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