CN115575175A - Geological engineering is with open-air sampling device - Google Patents
Geological engineering is with open-air sampling device Download PDFInfo
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- CN115575175A CN115575175A CN202211369611.4A CN202211369611A CN115575175A CN 115575175 A CN115575175 A CN 115575175A CN 202211369611 A CN202211369611 A CN 202211369611A CN 115575175 A CN115575175 A CN 115575175A
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- 238000005070 sampling Methods 0.000 title claims abstract description 88
- 238000005520 cutting process Methods 0.000 claims abstract description 34
- 238000009434 installation Methods 0.000 claims abstract description 14
- 210000002489 tectorial membrane Anatomy 0.000 claims description 20
- 238000000926 separation method Methods 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000005389 magnetism Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims 2
- 239000002689 soil Substances 0.000 abstract description 59
- 238000000034 method Methods 0.000 abstract description 17
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000005527 soil sampling Methods 0.000 description 8
- 239000007888 film coating Substances 0.000 description 3
- 238000009501 film coating Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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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
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to the technical field of sampling equipment, in particular to a field sampling device for geological engineering, which comprises a base, wherein a connecting assembly is arranged on the upper surface of the base, a sampling assembly is arranged on the connecting assembly, a separating assembly is arranged inside the sampling assembly, a cutting assembly is arranged inside the separating assembly, the separating assembly comprises a fixed shell, the fixed shell is connected inside the sampling assembly in a sliding mode, an installation cover plate is detachably arranged on the upper surface of the fixed shell, the fixed shell is arranged in a hollow mode, the cross sections of the upper surface and the lower surface of the fixed shell are square, soil to be sampled can be timely coated by the coating member, and the situation that some soil with high viscosity is attached to the sampling assembly in the sampling process, so that the soil attached to the sampling assembly is mixed with the soil taken out next in the continuous sampling process, and the component analysis result of the soil is influenced.
Description
Technical Field
The invention relates to the technical field of soil sampling, in particular to a field sampling device for geological engineering.
Background
Soil sample collection, sampling for short, refers to a process of taking a representative part of soil out of a field, culture or cultivation unit, and the soil sample obtained by sampling is appropriately processed to prepare an analysis sample.
Need use soil sampling equipment to take a sample when carrying out the soil sample, sample simultaneously to the soil of the different degree of depth that can be quick through sampling equipment to carry out the composition inspection to the soil of the different degree of depth.
However, the existing soil sampling devices have the following disadvantages:
1. when some soil with larger viscosity is encountered in the soil sampling process, part of the viscous soil can adhere to the inner wall of the sampler, and the soil can be mixed together in the continuous sampling process to influence the subsequent inspection result;
2. existing equipment is after carrying out the soil sample, often can adopt soil to take out along with knocking the inside of vibration slave unit with sample soil when taking out from equipment inside, can lead to soil loose at the in-process of taking out like this, perhaps takes place the fault, influences follow-up use to sample soil.
Disclosure of Invention
In order to solve the technical problems, the invention provides a field sampling device for geological engineering, which is achieved by the following specific technical means:
a field sampling device for geological engineering comprises a base, wherein a connecting assembly is arranged on the upper surface of the base, a sampling assembly is arranged on the connecting assembly, a separating assembly is arranged inside the sampling assembly, and a cutting assembly is arranged inside the separating assembly;
the utility model discloses a separation subassembly, including the fixed shell, the upper surface of fixed shell is detachable, and the upper surface of fixed shell is provided with two installation clamping grooves, the separation subassembly includes the set casing, the inside sliding connection of sampling subassembly has the set casing, the upper surface detachable mounting of set casing has the installation apron, the set casing is the cavity setting, and upper and lower surface cross section is a mouthful font, all seted up two installation clamping grooves on the upper surface four sides of set casing, installation clamping groove's inside is provided with the tectorial membrane piece.
Further, coupling assembling includes spacing slide bar, the equal fixedly connected with spacing slide bar in upper surface four corners of base, four common sliding connection has the mounting panel on the spacing slide bar, the spacing of inboard fixedly connected with of mounting panel, spacing last fixed surface of spacing is connected with a limit baffle, all run through about the lower surface front and back side of mounting panel has the displacement lead screw through threaded connection.
Furthermore, a cutting part is arranged inside the separating assembly, four corners of the upper surface of the cutting part are fixedly connected with limiting support rods, and a contact part is arranged in the middle position of the upper surface of the cutting part.
Further, sampling component includes the sampling tube, coupling assembling's upper surface has the sampling tube through fastening bolt joint, a plurality of through-holes have been seted up to the upper surface of sampling tube, sliding connection has the promotion strip about the inside of through-hole, the bottom fixedly connected with magnetism of promotion strip is inhaled the piece, and is a plurality of the common fixedly connected with of upper surface of promotion strip presses the apron.
Further, the tectorial membrane piece includes the font connecting plate, the font connecting plate is all had through the connecting bolt joint in the inside of two installation slot on one side of the set casing, the common fixedly connected with in bottom of two font connecting plates on the same edge of set casing connects the installing frame, the inboard of connecting the installing frame is rotated and is connected with the tectorial membrane book.
Further, the cutting part includes the separator box, the inside of separator assembly is provided with the separator box, the inside intermediate position department of separator box is provided with spacing connection frame, both ends fixed connection about the upper and lower surface of spacing connection frame respectively with the separator box internal surface, four vertical faces of spacing connection frame all run through sliding connection through reset spring and have the connecting push rod, one side that connecting push rod is located spacing connection frame inside is provided with the extrusion ball, connecting push rod keeps away from the one end fixedly connected with electrothermal fuse strip of spacing connection frame.
Further, the conflict piece is including fixed pipe, the fixed pipe of last fixed surface of cutting piece is connected with, sliding connection has sliding push rod about the inside of fixed pipe passes through supporting spring, sliding push rod runs through the upper surface of cutting piece, sliding push rod's bottom fixedly connected with extrusion spheroid.
Compared with the prior art, the invention has the following beneficial effects:
1. this geological engineering uses open-air sampling device can carry out timely tectorial membrane through the soil that sets up of tectorial membrane spare with the sample in-process that carries out the soil sample, avoids attaching to the sampling subassembly at the great soil of some stickies of the in-process of sampling, leads to at the in-process that lasts the sampling, and the adhesion is mixed with the soil that next takes out on the sampling subassembly, influences the component analysis result of later to soil.
2. This geological engineering is with open-air sampling device can decide the tectorial membrane book timely after the sample is ended through the setting of piece of supporting and cutting member to in the sample of going on next time, avoid after the sample is ended, when taking out sample soil, take out too much tectorial membrane book, cause the waste of tectorial membrane book, also avoid covering tectorial membrane book and soil separation on soil simultaneously.
3. This geological engineering uses open-air sampling device can avoid appearing the condition of cuting at the in-process soil that takes out with the complete taking out of soil of the inside sample of sample tube through the setting that promotes the strip, influences going on of follow-up staff to the testing work of multilayer soil, and the complete soil that will take out a sample, can be more obvious observe and take the testing sample to the soil of the different degree of depth.
Drawings
Fig. 1 is an appearance schematic diagram of the present invention.
FIG. 2 is a schematic view of the present invention with the push plate and push bar removed.
FIG. 3 is a schematic view of a separator assembly of the present invention.
Fig. 4 is a schematic view of the invention of fig. 3 with the mounting cover removed.
Fig. 5 is a top view of fig. 4 of the present invention.
Fig. 6 is a top cross-sectional view of the cutting assembly of the present invention.
Fig. 7 is a front cross-sectional view of the cutting assembly of the present invention.
FIG. 8 is a schematic view of the position relationship between the push bar and the separating assembly according to the present invention.
In the figure: 1. a base; 2. a connecting assembly; 3. a sampling assembly; 4. a separation assembly; 5. a cutting assembly; 21. a limiting slide bar; 22. a displacement screw rod; 23. mounting a plate; 24. a limiting frame; 25. a limit baffle; 31. pressing the cover plate; 32. a sampling tube; 33. a magnetic block; 34. a push bar; 41. installing a cover plate; 42. a stationary case; 43. installing a clamping groove; 44. a film covering member; 51. a limit stay bar; 52. a contact member; 53. cutting the piece; 441. connecting the mounting frame; 442. 7-shaped connecting plates; 443. film-covered rolls; 521. a sliding push rod; 522. extruding the ball body; 523. a fixed tube; 531. electrically fusing the bars; 532. connecting a push rod; 533. a limiting connecting frame; 534. and a separation box.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2, 3 and 4, a field sampling device for geological engineering comprises a base 1, a connecting assembly 2 is arranged on the upper surface of the base 1, a sampling assembly 3 is arranged on the connecting assembly 2, a separating assembly 4 is arranged in the sampling assembly 3, a separating membrane is arranged in the separating assembly 4, and a cutting assembly 5 is arranged in the separating assembly 4;
when specifically using, when carrying out the soil sample, at first place sampling device in the sample position, pull out a section unnecessary length to the outside of sampling subassembly 3 with the compartment membrane on the separable set 4, then drive sampling subassembly 3 through coupling assembling 2 and move down and begin to take a sample, the in-process of taking a sample again carries out the tectorial membrane through separable set 4 to the soil of sample, avoid soil adhesion on sampling subassembly 3, after the sample is ended, cut the tectorial membrane through cutting assembly 5, then take out the soil of sampling subassembly 3 inside.
Referring to fig. 2, the connecting assembly 2 includes limiting slide rods 21, the four corners of the upper surface of the base 1 are fixedly connected with the limiting slide rods 21, the four limiting slide rods 21 are connected with mounting plates 23 in a sliding manner, the inner sides of the mounting plates 23 are fixedly connected with limiting frames 24, the upper surfaces of the limiting frames 24 are fixedly connected with limiting baffles 25, and the front and rear sides of the lower surface of the mounting plates 23 are connected with displacement screws 22 through threads.
When the sampling device is used specifically, when soil sampling is started, the displacement screw rod 22 connected with an external drive is driven by the external drive to rotate, the mounting plate 23 is driven to slide downwards on the limiting slide rod 21, soil sampling is started through the sampling tube 32, after sampling is finished, the displacement screw rod 22 is driven by the external drive to overturn to push the mounting plate 23 upwards, and finally the fastening bolt on the limiting baffle 25 is unscrewed to take the sampling tube 32 down.
Referring to fig. 1 and 8, the sampling assembly 3 includes a sampling tube 32, the upper surface of the limiting frame 24 is vertically clamped with the sampling tube 32 through a fastening bolt, a plurality of limiting through holes are formed in the upper surface of the sampling tube 32, a plurality of pushing strips 34 are vertically slidably connected in the through holes, a magnetic suction block 33 is fixedly connected to the bottom ends of the pushing strips 34, and a cover plate 31 is fixedly connected to the upper surfaces of the pushing strips 34.
Can be with the complete taking out of soil of the inside sample of sampling tube 32 through the setting that promotes strip 34, keep away the condition that appears cutting at the in-process soil that takes out, influence going on of follow-up staff to the detection achievement of multilayer soil, the complete soil that will take a sample takes out, can be more obvious observe and take the test sample to the soil of the different degree of depth.
When specifically using, promote under the normal condition strip 34 and adsorb separating element 4 production through the magnetism piece 33 of inhaling of its bottom, when beginning to carry out soil sampling, promote strip 34 along with separating element 4 upwards sliding synchronous motion, press after the sample finishes and press apron 31 through promoting strip 34 with the inside sample soil of sampling tube 32 outside propelling movement, take out sample soil from the inside of sampling tube 32.
Referring to fig. 3, 4 and 5, the separating assembly 4 includes a fixing shell 42, the fixing shell 42 is slidably connected to the inside of the sampling tube 32, an installation cover plate 41 is detachably installed on the upper surface of the fixing shell 42, the fixing shell 42 is hollow, the cross sections of the upper surface and the lower surface are square, two installation clamping grooves 43 are respectively formed in four sides of the upper surface of the fixing shell 42, a film coating member 44 is arranged inside the installation clamping grooves 43, the film coating member 44 includes 7-shaped connecting plates 442, the two installation clamping grooves 43 on one side of the fixing shell 42 are respectively clamped with the 7-shaped connecting plates 442 through connecting bolts, the bottom ends of the two 7-shaped connecting plates 442 on the same side of the fixing shell 42 are jointly and fixedly connected with a connection mounting frame 441, and the inner side of the connection mounting frame 441 is rotatably connected with a film coating roll 443.
The soil that can carry out the sample through setting up of tectorial membrane piece 44 can carry out timely tectorial membrane in the in-process that carries out the soil sample, avoids adhering to on sampling component 3 at the great soil of some stickies of the in-process of sampling, leads to at the in-process that lasts the sampling, and the adhesion is mixed with the soil that next takes out on sampling component 3, influences the component analysis result of later to soil.
When the sampling of soil is started, the separation films on the four film-covered rolls 443 are manually pulled out to the outer side of the sampling tube 32 for an excessive distance to be attached to the ground, then soil sampling is started, at this time, the sampling tube 32 cuts the film-covered roll 443 on the outer side of the sampling tube 32 and presses the film-covered roll 443 into the soil in the process of downward movement, the soil gradually enters the inner part of the sampling tube 32 as the sampling tube 32 continues to move downward, the film-covered roll 443 covers between the entered soil and the sampling tube 32, when the film-covered roll 443 needs to be replenished, the mounting cover plate 41 is firstly taken down from the fixed shell 42, the 7-shaped connecting plate 442 is taken down from the mounting clamping groove 43, and then a new film-covered roll 443 is remounted on the connecting mounting frame 441 for continuous use.
Referring to fig. 5, 6 and 7, the cutting assembly 5 includes a cutting member 53, the cutting member 53 is disposed inside the fixing housing 42, four corners of an upper surface of the cutting member 53 are all fixedly connected with a limiting support rod 51, a contact member 52 is disposed at a middle position of the upper surface of the cutting member 53, the cutting member 53 includes a separation box 534, the separation box 534 is disposed inside the fixing housing 42, a limiting connection frame 533 is disposed at a middle position of an inside of the separation box 534, an upper surface and a lower surface of the limiting connection frame 533 are respectively fixedly connected with an upper end and a lower end of an inner surface of the separation box 534, four vertical surfaces of the limiting connection frame 533 are all connected with a connection push rod 532 through a return spring in a penetrating and sliding manner, an extrusion ball is disposed on one side of the connection push rod 532 inside the limiting connection frame 533, an electrothermal fusing strip 531 is fixedly connected to one end of the connection push rod 532 far away from the limiting connection frame 533, the contact member 52 includes a fixing tube 523, a fixing tube 523 is fixedly connected to the upper surface of the separation box 534, a sliding tube 521 is fixedly connected inside of the fixing tube 523 through a supporting spring in an up and down sliding manner, the sliding push rod 521, the sliding connection push rod 521 runs through a supporting spring, the upper surface of the sliding push rod 521, the sliding rod 521 runs through an upper surface of the cutting member 53, and a bottom end of the sliding push rod 522 is fixedly connected with the extrusion ball 521.
Can decide tectorial membrane book 443 through the setting of contact piece 52 and cutting member 53 in time after the sample is ended to in time, in order to carry out next sample, avoid after the sample is ended, when taking out sample soil, take out too much tectorial membrane book 443, cause the waste of tectorial membrane book 443, also avoid simultaneously covering tectorial membrane book 443 on soil and soil separation.
In specific use, after the sampling of the sampling tube 32 is finished, the fixed shell 42 slides to the topmost end in the sampling tube 32, the sliding push rod 521 is in contact with the top end of the inner surface of the sampling tube 32 and slides downwards in the fixed tube 523, the connecting push rod 532 is pushed by the extrusion ball 522 and is compressed, the connecting push rod 532 moves towards the outer side of the separation box 534 under the force of the force, the electrothermal fusing strip 531 is pushed to the film covering roll 443, the film covering roll 443 is fused, and the separation box can be more stable in the fixed shell 42 through the arrangement of the limit support rod 51.
The working principle is as follows: when using, when carrying out the soil sample, at first place sampling device in the sample position, pull out one section unnecessary length to the outside of sampling component 3 with the compartment membrane on the separable set 4, then drive sampling component 3 through coupling assembling 2 and remove downwards and begin to take a sample, the in-process of taking a sample again carries out the tectorial membrane through separable set 4 to the soil of sample, avoid soil adhesion on sampling component 3, after the sample is ended, cut the tectorial membrane through cutting assembly 5, then take out the soil of sampling component 3 inside.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a geological engineering is with open-air sampling device, includes base (1), its characterized in that: the upper surface of the base (1) is provided with a connecting assembly (2), the connecting assembly (2) is provided with a sampling assembly (3), a separating assembly (4) is arranged inside the sampling assembly (3), and a cutting assembly (5) is arranged inside the separating assembly (4);
separation subassembly (4) are including set casing (42), the inside sliding connection of sampling subassembly (3) has set casing (42), the upper surface demountable installation of set casing (42) has installation apron (41), set casing (42) are the cavity setting, and upper and lower surface cross section is a mouthful font, all seted up two installation slot (43) on the upper surface four sides of set casing (42), the inside of installation slot (43) is provided with tectorial membrane spare (44).
2. The field sampling device for geological engineering according to claim 1, characterized in that: coupling assembling (2) are including spacing slide bar (21), the equal fixedly connected with spacing slide bar (21) in upper surface four corners of base (1), four common sliding connection has mounting panel (23) on spacing slide bar (21), inboard fixedly connected with spacing (24) of mounting panel (23), a limit baffle (25) have been crossed to the last fixed surface of spacing (24), there is displacement lead screw (22) side all to run through from top to bottom through threaded connection around the lower surface of mounting panel (23).
3. The field sampling device for geological engineering according to claim 1, characterized in that: the cutting assembly (5) comprises a cutting piece (53), the cutting piece (53) is arranged inside the separating assembly (4), four corners of the upper surface of the cutting piece (53) are fixedly connected with limit support rods (51), and a contact piece (52) is arranged in the middle position of the upper surface of the cutting piece (53).
4. The field sampling device for geological engineering according to claim 1, characterized in that: sampling subassembly (3) include sampling tube (32), the upper surface of coupling assembling (2) has sampling tube (32) through fastening bolt joint, a plurality of through-holes have been seted up to the upper surface of sampling tube (32), sliding connection has promotion strip (34) about the inside of through-hole, the piece (33) is inhaled to the bottom fixedly connected with magnetism that promotes strip (34), and is a plurality of promote the common fixedly connected with of upper surface of strip (34) and press apron (31).
5. The field sampling device for geological engineering according to claim 1, wherein: the laminating piece (44) comprises 7-shaped connecting plates (442), the 7-shaped connecting plates (442) are clamped inside two mounting clamping grooves (43) on one side of the fixing shell (42) through connecting bolts, the bottom ends of the two 7-shaped connecting plates (442) on the same side of the fixing shell (42) are fixedly connected with a connecting mounting frame (441) together, and the inner side of the connecting mounting frame (441) is rotatably connected with a laminating roll (443).
6. A field sampling device for geological engineering according to claim 3, characterized in that: cutting member (53) are including separator box (534), the inside of separator subassembly (4) is provided with separator box (534), the inside intermediate position department of separator box (534) is provided with spacing connection frame (533), both ends fixed connection about the upper and lower surface of spacing connection frame (533) respectively with separator box (534) internal surface, four vertical faces of spacing connection frame (533) all run through sliding connection through reset spring and have connection push rod (532), one side that connection push rod (532) are located spacing connection frame (533) inside is provided with the extrusion ball, the one end fixedly connected with electric heat fuse strip (531) of spacing connection frame (533) are kept away from in connection push rod (532).
7. A field sampling device for geological engineering according to claim 3, characterized in that: the abutting part (52) comprises a fixed pipe (523), the upper surface of the cutting part (53) is fixedly connected with the fixed pipe (523), the inside of the fixed pipe (523) is connected with a sliding push rod (521) in a vertical sliding mode through a supporting spring, the sliding push rod (521) penetrates through the upper surface of the cutting part (53), and the bottom end of the sliding push rod (521) is fixedly connected with an extrusion ball body (522).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211369611.4A CN115575175B (en) | 2022-11-03 | 2022-11-03 | Open-air sampling device is used to geological engineering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211369611.4A CN115575175B (en) | 2022-11-03 | 2022-11-03 | Open-air sampling device is used to geological engineering |
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| CN115575175B CN115575175B (en) | 2024-02-13 |
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