CN220872112U - Sampler for geotechnical engineering investigation - Google Patents
Sampler for geotechnical engineering investigation Download PDFInfo
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- CN220872112U CN220872112U CN202322352321.5U CN202322352321U CN220872112U CN 220872112 U CN220872112 U CN 220872112U CN 202322352321 U CN202322352321 U CN 202322352321U CN 220872112 U CN220872112 U CN 220872112U
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- 238000011835 investigation Methods 0.000 title claims abstract description 22
- 238000005070 sampling Methods 0.000 claims abstract description 137
- 230000007246 mechanism Effects 0.000 claims abstract description 81
- 239000002184 metal Substances 0.000 claims description 11
- 239000011435 rock Substances 0.000 description 47
- 239000002689 soil Substances 0.000 description 46
- 239000007788 liquid Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of geotechnical engineering investigation, in particular to a sampler for geotechnical engineering investigation, which comprises a base and a sampling mechanism, wherein the sampling mechanism is assembled with the base and comprises a sampling drill pipe and a pressure mechanism, the pressure mechanism is assembled with the base and is positioned at one side of the sampling mechanism, the pressure mechanism comprises an air pump and an air pipe, the inner side of the sampling drill pipe is communicated with the air pump through the air pipe, and one side of the air pipe, which is close to the sampling mechanism, is assembled at the upper part of the sampling drill pipe.
Description
Technical Field
The utility model relates to the technical field of geotechnical engineering investigation, in particular to a sampler for geotechnical engineering investigation.
Background
The sampler for geotechnical engineering investigation is a tool specially used for acquiring underground soil and rock samples, the samples can be used for analysis and testing so as to know important parameters such as properties, composition, bearing capacity, permeability and the like of underground soil and rock, so that engineering design and construction are guided, a geotechnical sampling drilling machine is one of main types of samplers, after the existing geotechnical sampling drilling machine samples the geotechnical, a sampling drill pipe needs to be manually and repeatedly knocked by a hammer head for a plurality of times, the shape of the sampling drill pipe, the position precision of the sampling drill pipe and the connection relation with other components can be damaged by repeatedly and repeatedly knocking the sampling drill pipe, the risk of damage of the sampling drill pipe is increased, the service life of the sampling drill pipe is reduced, the maintenance rate of the sampler is increased, the service life of the sampler is reduced, and the sampling efficiency of the sampler on the geotechnical is affected.
Accordingly, there is a need for improvements to existing samplers for geotechnical surveys to reduce the number of repeated taps on a sampling drill pipe.
Disclosure of Invention
The utility model aims to provide a sampler for geotechnical engineering investigation, which is designed for solving at least one technical problem in the background technology.
In order to achieve the above purpose, the present utility model adopts the following scheme: the utility model provides a sampler of geotechnical engineering reconnaissance, includes base, sampling mechanism with the base assembly, sampling mechanism is including being used for carrying out the sample drill pipe of taking out to the ground, still including being used for assisting the pressure mechanism that the ground took out, pressure mechanism with the base assembly just is located one side of sampling mechanism, pressure mechanism includes air pump, gas-supply pipe, the inboard of sampling drill pipe passes through the gas-supply pipe with the air pump is linked together, the gas-supply pipe is close to sampling mechanism's one end assemble in the upper portion of sampling drill pipe.
The upper portion of the sampling drill pipe is connected with a first connecting piece, one side of the gas pipe, which faces the sampling drill pipe, is connected with a second connecting piece, the first connecting piece and the second connecting piece are detachably connected, and when the sampling mechanism drives the sampling drill pipe to rotate, the first connecting piece and the second connecting piece are arranged at intervals.
The second connecting piece is provided with an electromagnet, the first connecting piece is provided with a magnetic metal block, the metal block faces the electromagnet, and the electromagnet is detachably connected with the metal block.
The sampling mechanism comprises a movable seat for driving the sampling drill pipe to vertically slide, the sampling drill pipe is connected with the movable seat, and the pressure mechanism is connected with the movable seat.
The device comprises a sampling drill pipe, a base, a supporting mechanism and a supporting mechanism, wherein the supporting mechanism is used for supporting rock and soil, the supporting mechanism comprises a supporting box with an opening facing the sampling drill pipe, and the supporting box is assembled with the base in a sliding mode and moves back and forth on the lower side of the sampling drill pipe.
The bearing mechanism further comprises a bearing plate and a buffer rod, wherein the bearing plate is located above the inner bottom wall of the bearing box, and the buffer rod is vertically connected with the bearing plate and the bearing box.
The bearing mechanism further comprises a connecting seat, an elastic telescopic rod and a rotating motor, the bearing box is rotationally connected with the connecting seat, the fixed end of the rotating motor is transversely connected with the connecting seat, the rotating end of the rotating motor is connected to one side of the bearing box, which is located behind, and the elastic telescopic rod is connected to one side of the bearing box, which is located in front.
The bearing mechanism further comprises a pushing cylinder, and the pushing cylinder is longitudinally connected with the connecting seat and the base.
The base is provided with a yielding channel for yielding the longitudinal movement of the bearing mechanism, the yielding channel penetrates through the side wall of the base, the base is vertically and slidably connected with the base, and the base vertically slides to the lower side wall and the upper side wall of the yielding channel.
The first connecting piece is provided with a clamping concave part towards the side wall of the gas pipe in a sunken mode, the second connecting piece is provided with a clamping convex part towards the side wall of the sampling drill pipe in a protruding mode, and the clamping convex part and the clamping concave part are connected in a clamping mode.
The utility model has the advantages that after the sampling drill pipe finishes sampling the rock and soil, the sampling mechanism drives the sampling drill pipe to move upwards to the upper part of the ground, the air pump starts to operate, the air of the air pump is sent into the sampling drill pipe by the air pipe, the air entering the sampling drill pipe applies pressure towards the lower side of the sampling drill pipe to the rock and soil at the inner side of the sampling drill pipe, and meanwhile, the hammer head is manually used for knocking the side wall of the sampling drill pipe, so that the rock and soil at the inner side of the sampling drill pipe gradually moves towards the lower side of the sampling drill pipe under the double functions of the air pressure and hammer head knocking, and the rock and soil can be separated from the sampling drill pipe.
Through above-mentioned setting, because the air pump is to sample drill pipe transmission gas for the upside atmospheric pressure that is located the interior rock soil of sample drill pipe increases, with apply pressure to rock soil, promote rock soil outside slip, reduce the number of times that the sample drill pipe was strikeed to the manual work, reduce the separation degree of difficulty of rock soil and sample drill pipe, promote the simplicity of taking out the rock soil, promote the life of sample drill pipe, reduce the maintenance rate of sampler, promote the life of sampler, thereby promote the efficiency that the sampler was taken a sample to the rock soil.
Drawings
FIG. 1 is an elevation view of a sampler for geotechnical investigation;
FIG. 2 is a side view of a sampler for geotechnical investigation;
FIG. 3 is a top view of a sampler for geotechnical investigation;
FIG. 4 is a perspective view of a sampler for geotechnical investigation;
FIG. 5 is an enlarged view of area A of FIG. 4;
FIG. 6 is a schematic diagram of a sampler for geotechnical engineering investigation;
fig. 7 is an enlarged view of region B of fig. 6;
FIG. 8 is a view showing the forward extension of the receiving mechanism of the sampler for geotechnical investigation;
fig. 9 is an enlarged view of region C of fig. 8.
Detailed Description
Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so as to provide an intuitive and visual understanding of each technical feature and overall solution of the present utility model, but are not to be construed as limiting the scope of the present utility model.
In the description of the present utility model, if an orientation description such as "upper", "lower", "front", "rear", "left", "right", etc. is referred to, it is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model. When a feature is referred to as being "disposed," "secured" or "connected" to another feature, it can be directly disposed, secured or connected to the other feature or it can be indirectly disposed, secured or connected to the other feature.
In the description of the present utility model, if "a number" is referred to, it means one or more, if "a number" is referred to, it means two or more, if "greater than", "less than", "exceeding" is referred to, it is to be understood that the number is not included, and if "above", "below", "within" is referred to, it is understood that the number is included. If reference is made to "first", "second" it is to be understood as being used for distinguishing technical features and not as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Furthermore, unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Examples: as shown in fig. 1-9, a sampler for geotechnical engineering investigation comprises a base 101 and a sampling mechanism, wherein the sampling mechanism is assembled with the base 101, the sampling mechanism comprises a sampling drill pipe 201 for sampling geotechnical, and further comprises a pressure mechanism for assisting in taking out the geotechnical, the pressure mechanism is assembled with the base 101 and is located on one side of the sampling mechanism, the pressure mechanism comprises an air pump 301 and an air pipe 302, the inner side of the sampling drill pipe 201 is communicated with the air pump 301 through the air pipe 302, and one end, close to the sampling mechanism, of the air pipe 302 is assembled on the upper portion of the sampling drill pipe 201.
The sampling mechanism drives the sampling drill pipe to rotate and move downwards so that the sampling drill pipe drills into the rock soil, thereby sampling the rock soil, after the sampling drill pipe finishes sampling the rock soil, the sampling mechanism drives the sampling drill pipe to move upwards to the ground, then the air pump starts to operate, the air of the air pump is sent into the sampling drill pipe by the air pipe, the air entering the sampling drill pipe applies the pressure towards the lower side of the sampling drill pipe to the rock soil on the inner side of the sampling drill pipe, and meanwhile, the artificial hammer head is used for knocking the side wall of the sampling drill pipe, so that the rock soil on the inner side of the sampling drill pipe gradually moves towards the lower side of the sampling drill pipe under the double action of the air pressure and the hammer head, and thus the sampling rock soil can be separated from the sampling drill pipe.
Through above-mentioned setting, because the air pump is to sample drill pipe transmission gas for the upside atmospheric pressure that is located the interior ground of sample drill pipe increases, with apply pressure to sample ground, promote ground to outwards slide, reduce the number of times that the sample drill pipe was strikeed to the manual work, reduce the separation degree of difficulty of sample ground and sample drill pipe, promote the simplicity of taking out sample ground, promote the life of sample drill pipe, reduce the maintenance rate of sampler, promote the life of sampler, thereby promote the efficiency that the sampler was taken a sample to ground.
The upper portion of the sampling drill pipe 201 is connected with a first connecting piece 202, one side of the gas pipe 302, which faces the sampling drill pipe 201, is connected with a second connecting piece 303, the first connecting piece 202 and the second connecting piece 303 are detachably connected, when the sampling mechanism drives the sampling drill pipe 201 to rotate, the first connecting piece 202 and the second connecting piece 303 are arranged at intervals, through the arrangement, the interference between the rotating sampling drill pipe and the first connecting piece and the second connecting piece is avoided, the risk of the interference between the sampling drill pipe and the pressure mechanism is reduced, the stability of the sampling mechanism and the pressure mechanism is improved, and accordingly the reliability of the rock-soil sampler is improved.
Wherein, the second connecting piece 303 is equipped with the electro-magnet, first connecting piece 202 is equipped with the metal piece that takes magnetism, the metal piece orientation the electro-magnet sets up, the electro-magnet with the controllable dismantlement of metal piece is connected, through setting up first connecting piece and second connection separation state as the interval setting, thereby avoid when the sample drill pipe rotates, the risk that first connecting piece and second connecting piece take place to interfere, accomplish the rock and soil sample when the sample drill pipe and upwards remove the back, the electro-magnet circular telegram adsorbs the metal piece that the interval set up, realize first connecting piece and second connecting piece interconnect, the gas-supply pipe is linked together with the sample drill pipe, through above-mentioned setting, avoid needing the artificial dismantlement and the connection to first connecting piece and second connecting piece, promote the degree of automation that first connecting piece and second connecting piece were dismantled.
Wherein, sampling mechanism is including being used for driving the vertical gliding movable seat 205 of sampling drill pipe 201, sampling drill pipe 201 with movable seat 205 is connected, pressure mechanism with movable seat 205 is connected, and when movable seat moved down, movable seat drive pressure mechanism and sampling mechanism moved down for pressure mechanism and sampling mechanism can synchronous movement, through above-mentioned setting, avoid pressure mechanism and sampling mechanism to appear relative movement, simplify pressure mechanism and sampling mechanism's structure, further reduce pressure mechanism and sampling mechanism's risk of taking place to interfere.
The device comprises a sampling drill pipe and is characterized by further comprising a bearing mechanism used for bearing rock and soil, wherein the bearing mechanism comprises a bearing box 401 with an opening facing the sampling drill pipe and provided with a 201, the bearing box 401 is slidably assembled with a base 101 and moves back and forth at the lower side of the sampling drill pipe and bears the rock and soil falling below the sampling drill pipe, the bearing box reduces the height difference required by falling of the rock and soil, so that the sampled rock and soil falls on the ground, the risk of damage to the rock and soil caused by too high falling height is reduced, and the integrity of the sampled rock and soil is improved through the arrangement, so that the reliability of the sampler is improved.
Wherein, accept the mechanism still including accepting board 402, buffer rod 403, it is located to accept the board 402 accept the top of bottom wall in the case 401, the buffer rod 403 vertical connect in accept board 402 with accept case 401, after the rock soil in the sample drill pipe falls, accept the board and accept the rock soil that drops, the board that accepts that is connected with the buffer rod plays the cushioning effect to the rock soil that drops, and the cushioning effect plays the guard action to the rock soil, reduces the deformation degree of sample rock soil to better promotion sample rock soil layer column structure's integrality.
The receiving mechanism further comprises a connecting seat 404, an elastic telescopic rod 405 and a rotating motor 406, the receiving box 401 is in rotating connection with the connecting seat 404, the fixed end of the rotating motor 406 is transversely connected with the connecting seat 404, the rotating end of the rotating motor 406 is connected to one side of the receiving box 401, the elastic telescopic rod 405 is connected to one side of the receiving box 401, when rock and soil in a sampling drill pipe are taken out and processed, the connecting seat and the receiving box are driven to the lower side of the sampling drill pipe, the rock and soil fall under the action of an air pump and the action of manual knocking, the receiving box receives the fallen rock and soil, the slope of the receiving box is adjusted through rotating the motor, so that the slope of the receiving plate is adjusted, when the falling rock and soil is required to be collected, a collecting groove piece for collecting the sampling rock and soil is arranged below the front side of the receiving box, the receiving plate is driven to be inclined through the rotating motor, and the rock and soil falling to the receiving plate can slide into the collecting groove piece along the inclined plate. When not needing to collect the rock soil that drops, will accept the board drive through rotating the motor and set up to the level to reduce the rock soil that drops to accept the board and outwards slide the risk.
Further, the buffer rod 403 and the elastic telescopic rod 405 are both spring dampers.
The supporting mechanism further comprises a pushing air cylinder 407, the pushing air cylinder 407 is longitudinally connected with the connecting seat 404 and the base 101, when the supporting mechanism is required to collect dropped rock, the connecting seat is driven by the pushing air cylinder to extend outwards, so that the supporting box is driven to slide outwards, the dropped rock is supported, the automation degree of the supporting mechanism is improved, and the automation degree of the sampler is improved.
The base 101 is provided with a yielding channel 103 for yielding the longitudinal movement of the bearing mechanism, the yielding channel 103 penetrates through the side wall of the base 101, the base 102 is vertically and slidably connected with the base 101, the base 102 vertically slides on the lower side wall and the upper side wall of the yielding channel 103, the bearing mechanism is partially connected in the yielding channel 103, when rock and soil in a sampling drill pipe are taken out, the driving base slides upwards, so that the base yields the sliding of the bearing mechanism on the outer side of the yielding channel, the pushing cylinder can drive the connecting seat and the bearing box to slide to the lower side of the sampling drill pipe through the yielding channel, the bearing mechanism is positioned on the lower side of the sampling mechanism to bear the rock and soil, the sliding smoothness of the bearing structure is improved, and the reliability of the sampler is improved.
The base 102 is provided with a base 101, and is characterized by further comprising a yielding driving cylinder for driving the base 102 to vertically slide, wherein the fixed end of the yielding driving cylinder is vertically connected with the base 101, and the movable end of the yielding driving cylinder is connected with the base 102.
The first connecting piece 202 is provided with a clamping concave portion 203 towards a side wall of the gas pipe 302, the second connecting piece 303 is provided with a clamping convex portion 305 towards a side wall of the sampling drill pipe 201, the clamping convex portion 305 is provided towards the clamping concave portion 203, the clamping convex portion 305 and the clamping concave portion 203 are in fit arrangement, the clamping convex portion 305 and the clamping concave portion 206 are in clamping connection arrangement, the clamping concave portion 203 and the clamping convex portion 305 are used for positioning connection of the first connecting piece 202 and the second connecting piece 303, when the second connecting piece is connected with a metal block of the first connecting piece under the magnetic force adsorption of an electromagnet, the clamping concave portion and the clamping convex portion are mutually clamped, the positioning function is achieved on connection of the first connecting piece and the second connecting piece, the accuracy of the connection position of the first connecting piece and the second connecting piece is improved through the arrangement, and accordingly the connection stability of the gas pipe and the sampling pipe is improved, and the reliability of the sampling device is improved.
Wherein, sampling mechanism includes vertical motor 206, vertical motor 206's stiff end with the vertical assembly of base 102, vertical motor 206's active end is connected with lead screw 207, movable seat 205 be connected with the screw of lead screw 207 looks adaptation, the lead screw 207 drive the screw vertical slip, movable seat 205 pass through the screw with the vertical sliding connection of base 102, vertical motor drive lead screw rotates, and pivoted lead screw drives the screw vertical slip, realizes the vertical removal of sample drill pipe.
Wherein, sampling mechanism is including being used for the drive sampling drill pipe 201 pivoted sampling motor 209, sampling motor 209's stiff end with movable seat 205 vertical connection, sampling motor 209's rotation end with sampling drill pipe 201 is connected, and sampling motor's rotation end drive sampling drill pipe rotates, and pivoted sampling drill pipe contacts and moves down with the ground to the realization is to the sample of ground.
Wherein, the sampling drill pipe 201 is connected with the water pump that is used for right the inboard of sampling drill pipe 201 carries liquid, the water pump is connected with and is used for right the sampling drill pipe 201 carries liquid pipe 210 of liquid, and when the sampling drill pipe of pivoted removes down and carries out the sample to the ground, the water pump carries liquid through the inboard of liquid pipe to the sampling drill pipe, reduces the friction between sampling drill pipe and the ground, promotes sampling drill pipe pivoted smoothness.
Wherein, the receiving plate 402 is provided with a drain hole 408 penetrating through, and when the rock and soil at the inner side of the sampling drill pipe falls into the receiving plate, the liquid in the rock and soil flows out through the drain hole, so as to separate the rock and soil from the liquid.
Wherein, the sampling motor 209 is equipped with motor location stop mechanism for make the first connecting piece stall of sampling commentaries on classics pipe, thereby with the second connecting piece location connection of gas-supply pipe.
While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a sampler of geotechnical engineering reconnaissance, includes base, sampling mechanism with the base assembly, sampling mechanism is including the sampling drill pipe that is used for taking a sample to the ground, its characterized in that still includes the pressure mechanism that is used for assisting the ground to take out, pressure mechanism with the base assembly just is located one side of sampling mechanism, pressure mechanism includes air pump, gas-supply pipe, the inboard of sampling drill pipe is passed through the gas-supply pipe with the air pump is linked together, the gas-supply pipe is close to sampling mechanism's one end assemble in the upper portion of sampling drill pipe.
2. The sampler for geotechnical engineering investigation according to claim 1, wherein the upper part of the sampling drill pipe is connected with a first connecting piece, one side of the gas pipe, which faces the sampling drill pipe, is connected with a second connecting piece, the first connecting piece and the second connecting piece are detachably connected, and when the sampling mechanism drives the sampling drill pipe to rotate, the first connecting piece and the second connecting piece are arranged at intervals.
3. A sampler for geotechnical investigation according to claim 2 wherein the second connector is provided with an electromagnet and the first connector is provided with a magnetic metal block, the metal block being disposed towards the electromagnet, the electromagnet being in releasable connection with the metal block.
4. A sampler for geotechnical engineering investigation according to claim 1 wherein the sampling mechanism comprises a movable seat for driving the sampling drill pipe to slide vertically, the sampling drill pipe being connected to the movable seat, the pressure mechanism being connected to the movable seat.
5. A sampler for geotechnical investigation according to claim 1 further comprising a receiving means for receiving geotechnical, the receiving means comprising a receiving box open towards the sampling drill pipe, the receiving box being slidingly mounted with the base and moving back and forth under the sampling drill pipe.
6. The geotechnical engineering survey sampler of claim 5 wherein the receiving mechanism further comprises a receiving plate and a buffer rod, the receiving plate is located above the inner bottom wall of the receiving box, and the buffer rod is vertically connected to the receiving plate and the receiving box.
7. The sampler for geotechnical engineering investigation of claim 5, wherein the receiving mechanism further comprises a connecting seat, an elastic telescopic rod and a rotating motor, the receiving box is in rotating connection with the connecting seat, a fixed end of the rotating motor is transversely connected with the connecting seat, a rotating end of the rotating motor is connected to one side of the receiving box, which is at the rear side, and the elastic telescopic rod is connected to one side of the receiving box, which is at the front side.
8. A sampler for geotechnical investigation according to claim 7 wherein the receiving means further comprises a push cylinder longitudinally connected to the connecting base and the base.
9. The geotechnical engineering survey sampler of claim 8, further comprising a base, wherein the base is provided with a yielding channel for yielding the longitudinal movement of the receiving mechanism, the yielding channel is arranged through the side wall of the base, the base is vertically slidably connected with the base, and the base vertically slides on the lower side wall and the upper side wall of the yielding channel.
10. The sampler for geotechnical engineering investigation according to claim 2, wherein a side wall of the first connecting piece facing the gas pipe is concavely provided with a clamping concave portion, a side wall of the second connecting piece facing the sampling drill pipe is convexly provided with a clamping convex portion, and the clamping convex portion and the clamping concave portion are arranged in a clamping connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322352321.5U CN220872112U (en) | 2023-08-31 | 2023-08-31 | Sampler for geotechnical engineering investigation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322352321.5U CN220872112U (en) | 2023-08-31 | 2023-08-31 | Sampler for geotechnical engineering investigation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220872112U true CN220872112U (en) | 2024-04-30 |
Family
ID=90817005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322352321.5U Active CN220872112U (en) | 2023-08-31 | 2023-08-31 | Sampler for geotechnical engineering investigation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220872112U (en) |
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2023
- 2023-08-31 CN CN202322352321.5U patent/CN220872112U/en active Active
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