CN110702455A - Ecological geological environment exploration device for surface mine - Google Patents
Ecological geological environment exploration device for surface mine Download PDFInfo
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- CN110702455A CN110702455A CN201911011757.XA CN201911011757A CN110702455A CN 110702455 A CN110702455 A CN 110702455A CN 201911011757 A CN201911011757 A CN 201911011757A CN 110702455 A CN110702455 A CN 110702455A
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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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Abstract
The invention discloses an ecological geological environment exploration device for an open mine, which comprises a supporting mechanism, wherein a lifting mechanism is arranged on the supporting mechanism, a sampling mechanism is arranged on the lifting mechanism, and a driving mechanism is arranged on the lifting mechanism, when the ecological geological environment exploration device is used, the supporting mechanism is used for supporting the whole device, firstly, the driving mechanism is started to drive the sampling mechanism to rotate, then, the lifting mechanism is started to drive the sampling mechanism to descend in parallel, the sampling mechanism rotates when descending, mixed soil on the way is smashed and pushed aside, the sampling mechanism is convenient to descend for sampling, after the descending is limited, a pushing mechanism is pressed into the sampling mechanism, the pushing mechanism pushes the extruding mechanism to extrude the soil in the sampling mechanism, and the obtained sample can be prevented from falling along an opening due to too loose when the sampling mechanism is lifted, the sampling was performed to cause failure.
Description
Technical Field
The invention belongs to the technical field of environmental investigation, and particularly relates to an ecological geological environment investigation device for a surface mine.
Background
The damage to land resources caused by the over-exploitation of open-pit coal mines is mainly manifested by the problems of direct excavation and damage of industrial sites, occupied land of externally-discharged soil sites, and excavation sites, and the like, as is well known, the open-pit exploitation is disturbance damage to the whole original ground surface, the excavation sites and the externally-discharged soil sites occupy large land, and the occupied land can cause the original land to become the mining sites such as coal dressing sites, factory buildings, earth discharge roads, coal transportation railways, power supply lines, drainage pipelines and the like; the occupied soil mainly means that waste rock soil caused by excavation damage is stacked at the position of an external dump, so that the landform function is damaged; the excavation damage is the direct damage of the surface morphology, the biological population and the shallow stratum caused by mining, the surface vegetation damage is caused by the land occupation and excavation damage, and the originally stable system of the area is seriously interfered, so that the factors such as the vegetation, the landform, the social environment and the like are greatly changed.
And current geological environment investigation device is when taking a sample to the opencut coal mine, because of its inside stereoplasm stone, raw coal and soil mix, it is comparatively loose each other moreover for the sample that sampling device acquireed is also comparatively loose in its inside, when sampling device is lifting up, the sample of acquireing can drop along the lower extreme opening of device, causes the failure of sample, needs design an open-cut mine ecological geological environment investigation device to this, carries out the investigation to the ecological geology of open-cut mine.
Disclosure of Invention
The invention aims to solve the problems that when the conventional geological environment exploration device is used for sampling open-pit coal mines, hard stones, raw coal and soil in the open-pit coal mines are mixed and are loose, so that samples obtained by the sampling device are loose in the open-pit coal mines, and when the sampling device is lifted, the obtained samples fall along the lower end opening of the device, and sampling failure is caused.
In order to solve the above problems, the present invention provides a technical solution:
the utility model provides an open mine ecological geological environment exploration device, includes a supporting mechanism, an elevating system is installed to the last elevating system that installs of supporting mechanism, an elevating system is last to install a sampling mechanism, an actuating mechanism is installed to the last actuating mechanism that installs of elevating system, actuating mechanism's output is connected with sampling mechanism's top lateral wall, sampling mechanism's inside is provided with an extrusion mechanism, corresponds be provided with a pushing mechanism on the sampling mechanism of extrusion mechanism position.
As preferred, the supporting mechanism includes two supporting seats that are the paralleling form setting, two equal two spinal branch vaulting poles of fixedly connected with in one side that the supporting seat upper surface was kept away from each other, four the bracing piece all is vertical form setting, and four the common backup pad of fixedly connected with in top of bracing piece, the position that corresponds sampling mechanism 3 on the supporting seat runs through and has seted up a mounting hole.
Preferably, the lifting mechanism comprises two driving cylinders which are fixedly connected to the supporting plate in a vertical mode, the output ends of the driving cylinders are fixedly connected to a connecting plate, the positions of the connecting plate corresponding to the four supporting rods are provided with a sliding hole in a penetrating mode, and the connecting plate is connected to the four supporting rods in a sliding mode through the four sliding holes.
Preferably, the sampling mechanism includes that one is the sampling sleeve of lower extreme opening setting, the sampling sleeve passes through the bearing and rotates the center department of connecting at the connecting plate, the upper end of sampling sleeve runs through the upper surface of connecting plate and upwards extends, the lower extreme of sampling sleeve runs through the lower surface of connecting plate and downwardly extending, the lower fixed surface that the sampling sleeve corresponds the open position is connected with a ring piece, the insection form setting is personally submitted to the lower extreme of ring piece.
Preferably, the driving mechanism comprises a first bevel gear, the first bevel gear is fixedly sleeved on the top end outer cylinder wall of the sampling sleeve outside the connecting plate, the upper surface of the connecting plate corresponding to the position of the first bevel gear is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a second bevel gear through a coupler, and the first bevel gear is meshed with the second bevel gear.
Preferably, the extrusion mechanism includes two arc walls, two the arc walls are vertical form symmetry and offer on the relative inner tube wall of sampling sleeve, two the spout that a plurality of is T type setting is all seted up to the tank bottom of arc wall, a plurality of equal sliding connection has a slide bar that is T type setting in the T type inslot, a plurality of wherein one end of slide bar all runs through the notch that corresponds T type groove and extends to corresponding arc wall in, a plurality of the common fixedly connected with arc of one end that the slide bar is located corresponding arc wall, two the arc respectively with the shape phase-match of two arc walls.
Preferably, the pushing mechanism comprises two fixing holes, two the fixing holes are respectively run through and set up on the top cell walls of two arc walls, two the upper end drill way of fixing hole all is the upper surface setting that runs through the sampling sleeve, two equal sliding connection has a dead lever in the fixing hole, two the lower extreme of dead lever all runs through the lower extreme drill way of fixing hole and extends to two arc walls respectively in, two the lower extreme that the dead lever is located the arc wall all is the arc setting, two the upper end drill way that the upper end of dead lever all runs through the fixing hole extends to outside the sampling sleeve, two the dead lever is located the equal fixedly connected with in top outside the sampling sleeve and pushes down the handle.
Preferably, a through hole is formed in the support plate in a penetrating manner at a position corresponding to the sampling sleeve.
The invention has the beneficial effects that:
1. the invention relates to an ecological geological environment exploration device for an open mine, which is characterized in that a supporting mechanism, a lifting mechanism, a sampling mechanism, a driving mechanism, an extrusion mechanism and a pushing mechanism are arranged, when the device is used, the supporting mechanism is used for supporting the whole device, the driving mechanism is started to drive the sampling mechanism to rotate, then the lifting mechanism is started to drive the sampling mechanism to descend, the sampling mechanism rotates when descending, mixed soil on the way is smashed and pushed to one side, the sampling mechanism is convenient to descend for sampling, after the soil descends to the limit, the pushing mechanism is pressed towards the interior of the sampling mechanism, the pushing mechanism pushes the extrusion mechanism to extrude the soil in the sampling mechanism, and the problem that when the sampling mechanism is lifted, obtained samples fall along an opening due to too loose, and sampling failure is caused is avoided.
2. The invention relates to an ecological geological environment exploration device for an open mine, which is characterized in that an arc-shaped groove, a T-shaped groove, a sliding rod, an arc-shaped plate, a fixed hole, a fixed rod, a downward pressing handle and a through hole are arranged, when a sample in a sampling sleeve needs to be taken out, the sampling sleeve is reset at first, the downward pressing handle can be pulled through the through hole on a supporting plate at the moment, the fixed rod is pulled out through the downward pressing handle, the pressure on the arc-shaped plate is relieved, the arc-shaped plate is moved to two sides at the moment, the sample in the sampling sleeve can be taken out from an opening at the lower end of the sampling sleeve, and the whole operation.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional side view of the sampling mechanism of the present invention in a squeezed state;
FIG. 3 is a side view of the present invention;
FIG. 4 is a sectional view of the pressing mechanism of the present invention in a closed state;
FIG. 5 is a sectional view of the pressing mechanism of the present invention in a top view;
fig. 6 is a schematic structural view of the fixing rod of the present invention.
In the figure: 1. a support mechanism; 11. a supporting seat; 12. a support bar; 13. a support plate; 14. mounting holes; 2. a lifting mechanism; 21. a driving cylinder; 22. a connecting plate; 23. a slide hole; 3. a sampling mechanism; 31. a sampling sleeve; 32. a ring block; 4. a drive mechanism; 41. a first bevel gear; 42. a drive motor; 43. a second bevel gear; 5. an extrusion mechanism; 51. an arc-shaped slot; 52. a T-shaped groove; 53. a slide bar; 54. an arc-shaped plate; 6. a pushing mechanism; 61. a fixing hole; 62. fixing the rod; 63. pressing down the handle; 7. and a through hole.
The specific implementation mode is as follows:
as shown in fig. 1 to 6, the following technical solutions are adopted in the present embodiment:
an ecological geological environment exploration device for an open mine comprises a supporting mechanism 1, wherein a lifting mechanism 2 is installed on the supporting mechanism 1, a sampling mechanism 3 is installed on the lifting mechanism 2, a driving mechanism 4 is installed on the lifting mechanism 2, the output end of the driving mechanism 4 is connected with the outer side wall of the top end of the sampling mechanism 3, an extrusion mechanism 5 is arranged inside the sampling mechanism 3, a pushing mechanism 6 is arranged on the sampling mechanism 3 corresponding to the position of the extrusion mechanism 5, when the device is used, the whole device is supported through the supporting mechanism 1, the driving mechanism 4 is started to drive the sampling mechanism 3 to rotate, then the lifting mechanism 2 is started to drive the sampling mechanism 3 to descend, the sampling mechanism 3 rotates when descending, mixed soil on the way is smashed and pushed aside, and the sampling mechanism 3 is convenient to descend for sampling, after the sampling mechanism is descended to the limit, the pushing mechanism 6 is pressed into the sampling mechanism 3, the pushing mechanism 6 pushes the extruding mechanism 5 to extrude the soil in the sampling mechanism 3, then the sampling mechanism 3 is lifted, the pressure applied to the extruding mechanism 5 by the pushing mechanism 6 is released, and the obtained sample can be taken out from the sampling mechanism 3.
Wherein, supporting mechanism 1 includes two supporting seats 11 that are the form setting of running parallel, two spinal branch vaulting poles 12 of the equal fixedly connected with in one side that two supporting seats 11 upper surfaces kept away from each other, four spinal branch vaulting poles 12 all are vertical form setting, and backup pad 13 of the common fixedly connected with in top of four spinal branch vaulting poles 12, the position that corresponds sampling mechanism 3 on supporting seat 11 runs through and has seted up a mounting hole 14, at first place the device in subaerial to support the device through supporting seat 11, bracing piece 12 and backup pad 13's cooperation.
Wherein, elevating system 2 includes that two drive actuating cylinder 21, two drive actuating cylinder 21 all are vertical form fixed connection in backup pad 13, two drive the common fixedly connected with connecting plate 22 of output that drive actuating cylinder 21, the position that corresponds four spinal branch vaulting poles 12 on the connecting plate 22 all runs through and has seted up a draw runner 23, connecting plate 22 is through four draw runners 23 while sliding connection on four spinal branch vaulting poles 12, it goes up and down to drive connecting plate 22 through driving actuating cylinder 21, it is spacing that connecting plate 22 passes through the cooperation between bracing piece 12 and the draw runner 23, make connecting plate 22 and sampling sleeve 31 can go up and down steadily.
Wherein, sampling mechanism 3 includes a sampling sleeve 31 that is the setting of lower extreme opening, sampling sleeve 31 passes through the bearing and rotates the center department of connecting plate 22, sampling sleeve 31's upper end runs through connecting plate 22's upper surface and upwards extends, sampling sleeve 31's lower extreme runs through connecting plate 22's lower surface and downwardly extending, sampling sleeve 31 corresponds an annular piece 32 of fixed surface of open position, annular piece 32's lower extreme personally submits the insection form and sets up, sampling sleeve 31 rotates when descending, and the insection that drives annular piece 32 lower extreme carries out the breakage to soil, so that sampling sleeve 31 carries out the sample that descends.
The driving mechanism 4 includes a first bevel gear 41, the first bevel gear 41 is fixedly sleeved on the top end outer cylinder wall of the sampling sleeve 31 outside the connecting plate 22, the upper surface of the connecting plate 22 corresponding to the position of the first bevel gear 41 is fixedly connected with a driving motor 42, the output end of the driving motor 42 is fixedly connected with a second bevel gear 43 through a coupler, the first bevel gear 41 is meshed with the second bevel gear 43, the driving motor 42 can be started firstly, and the driving motor 42 drives the sampling sleeve 31 to rotate through the matching of the first bevel gear 41 and the second bevel gear 43.
Wherein, extrusion mechanism 5 includes two arc walls 51, two arc walls 51 are vertical form symmetry and offer on the relative inner tube wall of sampling sleeve 31, the spout 52 that a plurality of is the T type setting is all seted up to the tank bottom of two arc walls 51, equal sliding connection has a slide bar 53 that is the T type setting in a plurality of T type 52, the wherein one end of a plurality of slide bars 53 all runs through the notch that corresponds T type 52 and extends to in corresponding arc wall 51, the common fixedly connected with arc plate 54 of one end that a plurality of slide bars 53 are located corresponding arc wall 51, two arc plates 54 respectively with the shape phase-match of two arc walls 51.
Wherein, pushing mechanism 6 includes two fixed orificess 61, two fixed orificess 61 run through respectively and set up on the top cell wall of two arc walls 51, the upper end drill way of two fixed orificess 61 all is the upper surface setting that runs through sampling sleeve 31, equal sliding connection has a dead lever 62 in two fixed orificess 61, the lower extreme of two dead levers 62 all runs through the lower extreme drill way of fixed orificess 61 and extends to respectively in two arc walls 51, the lower extreme that two dead levers 62 are located arc wall 51 all is the arc setting, the upper end drill way that the upper end of two dead levers 62 all runs through fixed orificess 61 extends to outside sampling sleeve 31, two dead levers 62 are located equal fixedly connected with one of top outside sampling sleeve 31 and push down handle 63.
Wherein, a through hole 7 is opened on the support plate 13 corresponding to the position of the sampling sleeve 31.
The using state of the invention is as follows: the invention relates to an ecological geological environment exploration device for an open mine, which is used for firstly placing the device on the ground and supporting the device through the matching of a supporting seat 11, a supporting rod 12 and a supporting plate 13, at the moment, a driving motor 42 can be started firstly, the driving motor 42 drives a sampling sleeve 31 to rotate through the matching of a first bevel gear 41 and a second bevel gear 43, then a driving cylinder 21 is started to push a connecting plate 22 to descend, the connecting plate 22 is limited through the matching of the supporting rod 12 and a sliding hole 23, so that the connecting plate 22 and the sampling sleeve 31 can be stably lifted, the sampling sleeve 31 descends through an installation hole 14 to sample an open coal mine, the sampling sleeve 31 rotates while descending and drives insections at the lower end of an annular block 32 to crush soil so as to facilitate the sampling sleeve 31 to descend for sampling, when the sampling device descends to the limit of the driving cylinder 21, the driving cylinder 21 is stopped, the lower end cambered surfaces of the two fixing rods 62 are aligned with the orifices of the fixing holes 61 and inserted, the fixing rods 62 are inserted into the gaps between the bottoms of the arc-shaped grooves 51 and the arc-shaped plates 54 along the lower end cambered surfaces of the fixing rods 62, the fixing rods 62 are continuously pressed downwards by the pressing handle 63, the two fixing rods 62 push the two arc-shaped plates 54 to move oppositely until the two arc-shaped plates 54 abut against each other to extrude the sample in the sampling sleeve 31, meanwhile, the arc-shaped plates 54 can only advance to a certain position and cannot be separated from the arc-shaped grooves 51 and the sampling sleeve 31 under the limit of the plurality of sliding rods 53 and the T-shaped grooves 52, after the sample is extruded and fixed, the starting cylinder 21 can be started to drive the connecting plate 22 and the sampling sleeve 31 to ascend to the original position, and then the pressing handle 63 is, the fixing rod 62 is pulled out of the arc-shaped groove 51 by pressing the handle 63 downwards, so that the pressure applied to the arc-shaped plate 54 is relieved, and then the arc-shaped plate 54 is moved towards two sides, so that a sample in the sampling sleeve 31 can be taken out from an opening at the lower end of the sampling sleeve 31, and the whole operation is simple and convenient.
While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides an open mine ecological geological environment exploration device, a serial communication port, including a supporting mechanism (1), install a elevating system (2) on supporting mechanism (1), install a sampling mechanism (3) on elevating system (2), install a actuating mechanism (4) on elevating system (2), the output of actuating mechanism (4) is connected with the top lateral wall of sampling mechanism (3), the inside of sampling mechanism (3) is provided with an extrusion mechanism (5), corresponds be provided with a pushing mechanism (6) on sampling mechanism (3) of extrusion mechanism (5) position.
2. The surface mine ecological geological environment exploration device of claim 1, characterized in that: supporting mechanism (1) includes two supporting seats (11) that are the form setting of running parallel, two equal fixedly connected with two spinal branch vaulting poles (12) in one side that supporting seat (11) upper surface was kept away from each other, four bracing piece (12) all are vertical form setting, and four backup pad (13) of the common fixedly connected with in top of bracing piece (12), the position that corresponds sampling mechanism (3) on supporting seat (11) runs through and has seted up one mounting hole (14).
3. The surface mine ecological geological environment exploration device of claim 2, characterized in that: elevating system (2) drive actuating cylinder (21) including two, two drive actuating cylinder (21) and all be vertical form fixed connection on backup pad (13), two drive the common fixedly connected with connecting plate (22) of output that actuating cylinder (21), the position that corresponds four spinal branch vaulting poles (12) on connecting plate (22) all runs through and has seted up a slide opening (23), connecting plate (22) are through four slide opening (23) while sliding connection on four spinal branch vaulting poles (12).
4. The surface mine ecological geological environment exploration device of claim 3, characterized in that: sampling mechanism (3) are including one sampling sleeve (31) that is the lower extreme opening and sets up, sampling sleeve (31) rotate the center department of connecting at connecting plate (22) through the bearing, the upper end of sampling sleeve (31) runs through the upper surface of connecting plate (22) and upwards extends, the lower extreme of sampling sleeve (31) runs through the lower surface and the downwardly extending of connecting plate (22), sampling sleeve (31) correspond lower fixed surface of open position and are connected with a ring piece (32), the setting of insection form is personally submitted to the lower extreme of ring piece (32).
5. The surface mine ecological geological environment exploration device of claim 4, characterized in that: the driving mechanism (4) comprises a first bevel gear (41), the first bevel gear (41) is fixedly sleeved on the top end outer cylinder wall of the sampling sleeve (31) located outside the connecting plate (22), a driving motor (42) is fixedly connected to the upper surface of the connecting plate (22) corresponding to the position of the first bevel gear (41), the output end of the driving motor (42) is fixedly connected with a second bevel gear (43) through a coupler, and the first bevel gear (41) is meshed with the second bevel gear (43).
6. The surface mine ecological geological environment exploration device of claim 1, characterized in that: the extrusion mechanism (5) comprises two arc-shaped grooves (51), wherein the two arc-shaped grooves (51) are symmetrically arranged on the wall of the inner cylinder relative to the sampling sleeve (31) in a vertical mode, the bottom of each arc-shaped groove (51) is provided with a plurality of sliding grooves (52) which are arranged in a T shape, the bottom of each T-shaped groove (52) is provided with a plurality of sliding rods (53) which are arranged in the T-shaped grooves (52) in a sliding mode, one ends of the sliding rods (53) penetrate through the notches corresponding to the T-shaped grooves (52) and extend into the corresponding arc-shaped grooves (51), the sliding rods (53) are located at one ends of the corresponding arc-shaped grooves (51) and are fixedly connected with an arc-shaped plate (54) jointly, and the arc-shaped plates (54) are matched with the shapes of the two arc-shaped.
7. The surface mine ecological geological environment exploration device of claim 6, characterized in that: pushing mechanism (6) include two fixed orificess (61), two fixed orificess (61) run through respectively and set up on the top cell wall of two arc walls (51), two the upper end drill way of fixed orificess (61) all is the upper surface setting that runs through sampling sleeve (31), two equal sliding connection has a dead lever (62), two in fixed orificess (61) the lower extreme of dead lever (62) all runs through the lower extreme drill way of fixed orificess (61) and extends to respectively in two arc walls (51), two the lower extreme that dead lever (62) are located arc wall (51) all is the arc setting, two the upper end of dead lever (62) all runs through the upper end drill way of fixed orificess (61) and extends to outside sampling sleeve (31), two dead lever (62) are located equal fixedly connected with in top outside sampling sleeve (31) and push down handle (63).
8. The surface mine ecological geological environment exploration device of claim 2, characterized in that: a through hole (7) is formed in the supporting plate (13) in a penetrating mode and corresponds to the position of the sampling sleeve (31).
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| CN201911011757.XA CN110702455B (en) | 2019-10-23 | 2019-10-23 | Ecological geological environment exploration device for surface mine |
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| CN201911011757.XA CN110702455B (en) | 2019-10-23 | 2019-10-23 | Ecological geological environment exploration device for surface mine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112924219A (en) * | 2021-01-28 | 2021-06-08 | 杭州泰川建设技术有限公司 | Surface mine ecological geological environment exploration sampling device |
| CN116625732A (en) * | 2023-06-06 | 2023-08-22 | 山东慧创信息科技有限公司 | Soil sampling device and sampling method for waste mine barren mountain restoration |
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| CN207717402U (en) * | 2017-10-24 | 2018-08-10 | 马明应 | A kind of geologic prospect soil sampling apparatus |
| CN109283009A (en) * | 2018-11-08 | 2019-01-29 | 中煤长江地质集团有限公司 | A kind of shale gas, which is reconnoitred, investigates automatic operation platform on the spot |
| CN110261168A (en) * | 2019-07-22 | 2019-09-20 | 长安大学 | A kind of geologic prospect Rock And Soil sampler and sampling method |
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| CN207717402U (en) * | 2017-10-24 | 2018-08-10 | 马明应 | A kind of geologic prospect soil sampling apparatus |
| CN109283009A (en) * | 2018-11-08 | 2019-01-29 | 中煤长江地质集团有限公司 | A kind of shale gas, which is reconnoitred, investigates automatic operation platform on the spot |
| CN110261168A (en) * | 2019-07-22 | 2019-09-20 | 长安大学 | A kind of geologic prospect Rock And Soil sampler and sampling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112924219A (en) * | 2021-01-28 | 2021-06-08 | 杭州泰川建设技术有限公司 | Surface mine ecological geological environment exploration sampling device |
| CN112924219B (en) * | 2021-01-28 | 2022-04-12 | 杭州泰川建设技术有限公司 | Surface mine ecological geological environment exploration sampling device |
| CN116625732A (en) * | 2023-06-06 | 2023-08-22 | 山东慧创信息科技有限公司 | Soil sampling device and sampling method for waste mine barren mountain restoration |
| CN116625732B (en) * | 2023-06-06 | 2023-10-27 | 山东慧创信息科技有限公司 | Soil sampling device and sampling method for waste mine barren mountain restoration |
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