A rock and soil survey sampling device

Abstract

The present invention relates to the technical field of geological surveying, and specifically discloses a geotechnical survey sampling device, comprising a vertically arranged and hollow sampling column, a plurality of sampling assemblies arranged on the sampling column; the plurality of sampling assemblies are distributed in a vertical direction; the sampling assembly comprises a pair of samplers respectively arranged on opposite sides of the sampling column, and a driving device arranged inside the sampling column; the sampler comprises a first connecting plate hinged to the outer wall of the sampling column, a second connecting plate hinged to the outer wall of the sampling column, and a sampling box hinged to both the first connecting plate and the second connecting plate; the second connecting plate is arranged above the first connecting plate, the first connecting plate and the second connecting plate are equal in length and parallel to each other, and the sampling box opening is arranged upward; the first connecting plate is hinged to the outer wall of the sampling column via a horizontally arranged rotating shaft, and the driving device is used to drive the first connecting plate to rotate about the rotating shaft. The geotechnical survey sampling device of the present invention can efficiently sample geotechnical samples at different depths in a borehole.

Description

Technical Field

[0001] The present invention relates to the technical field of geological survey, and in particular to a rock and soil survey sampling device. Background Art

[0002] Underground rock and soil sampling is an important part of geological survey. It plays an important role in understanding underground structure, underground rock and soil properties, analyzing geological causes, and utilizing geothermal resources. Conventional geological survey sampling methods mainly include drilling sampling, excavation sampling, ultrasonic sampling, resistivity sampling, seismic survey, chemical analysis, etc. The above methods all have good effects depending on the actual situation.

[0003] For geological environments where the main body is rock and soil and resources (such as geothermal resources) are to be taken at a deep depth (such as a depth greater than 1000 meters), the borehole sampling method is more appropriate. The borehole sampling method mainly uses a drilling device to drill a hole, and after drilling to a certain depth, a sampler is used to extract the sample at a certain depth. However, for situations where multi-depth sampling is required (taking rock and soil samples at multiple depths for analysis at the same borehole location), the operation is relatively cumbersome and requires frequent switching between drilling and sampling. The sampling efficiency is poor, and an area usually needs to be sampled and analyzed at different locations, so the overall sampling will take a lot of time. Therefore, a more efficient sampling device can be designed. Summary of the Invention

[0004] The object of the present invention is to provide a rock and soil survey sampling device, which can efficiently perform sampling operations on rock and soil samples at different depths in a borehole.

[0005] The present invention is achieved through the following technical solutions: the geotechnical survey sampling device of the present invention includes a vertically arranged and hollow sampling column, and a plurality of sampling assemblies arranged on the sampling column; the plurality of sampling assemblies are distributed in the vertical direction; the sampling assembly includes a pair of samplers respectively arranged on opposite sides of the sampling column, and a driving device arranged inside the sampling column; the sampler includes a first connecting plate hinged to the outer wall of the sampling column, a second connecting plate hinged to the outer wall of the sampling column, and a sampling box hinged to the first connecting plate and the second connecting plate at the same time; the second connecting plate is arranged above the first connecting plate, the first connecting plate and the second connecting plate are equal in length and parallel to each other, and the opening of the sampling box is arranged upward; the first connecting plate is hinged to the outer wall of the sampling column through a horizontally arranged rotating shaft, and the driving device is used to drive the first connecting plate to rotate with the rotating shaft as the center.

[0006] Furthermore, the driving device includes a driving tube vertically arranged in the sampling column and sealed at both ends, an air supply device connected to the driving tube, an air relief valve arranged on the driving tube, a sliding tube horizontally arranged and connected to the side of the driving tube, a sliding rod sealed and slidable in the sliding tube, and a shifting rod horizontally arranged on the sliding rod at one end outside the sampling column; the sliding rod passes through the side wall of the sampling column; the first connecting plate is a hollow structure, and a first through hole is opened on the side of the first connecting plate close to the sampling column; the sliding rod is arranged through the first through hole, and the shifting rod is arranged inside the first connecting plate.

[0007] Furthermore, the driving device also includes a counterweight block slidably arranged in the driving tube, a second through hole opened on the counterweight block, and a pair of pull ropes arranged on the upper side of the counterweight block; the pair of pull ropes are respectively connected to the pair of sliding rods.

[0008] Furthermore, the driving device also includes a spring arranged on the lower side of the counterweight block; the upper end of the spring is connected to the counterweight block, and the lower end of the spring is connected to the inner bottom wall of the driving tube.

[0009] Furthermore, the gas supply device includes a compressed gas cylinder arranged inside the sampling column, an air guide tube arranged at the gas outlet of the compressed gas cylinder, and a valve arranged on the air guide tube; the air guide tube is connected to the driving tube.

[0010] Furthermore, a pair of air guide tubes are provided, and both of the air guide tubes are connected to the drive tube; when the compressed gas cylinder does not supply gas to the drive tube, one air guide tube is provided above the counterweight block, and the other air guide tube is provided below the counterweight block.

[0011] The top end of the sliding member is fixed with a limit ring, and the upper end of the sliding member is provided with a slider. The upper end of the sliding member is fixed with a push rod; the push rod passes through the upper end of the driving tube and extends outward, and the sliding member is located above the sliding tube; the end of the sliding member is located in the sliding tube and is provided with a horizontal pull rod, and the pull rod is provided with a horizontally arranged ring at one end away from the sliding rod; when the compressed gas cylinder does not supply gas to the driving tube, the center of the circle of the pair of rings is located at the axis of the driving tube; the upper end of the push rod passes through the lower end wall of the driving tube above it and is arranged in the driving tube, and the slider is connected to the upper end of the driving tube by magnetic attraction; when the driving tube where the slider is located is not supplied with gas by the compressed gas cylinder, the push rod on the slider is located at the lower side of the pair of rings; when the driving tube where the slider is located is supplied with gas by the compressed gas cylinder, the push rod on the slider is inserted into the pair of rings.

[0012] Furthermore, a cover plate is fixedly provided on a side of the second connecting plate away from the sampling column; when the sampling box is close to the sampling column, the cover plate is covered on the opening side of the sampling box.

[0013] Furthermore, the sampling box is a vertically arranged flat structure, the side of the sampling box away from the sampling column is arc-shaped, and the upper end of the side of the sampling box away from the sampling column is provided with a cutting edge.

[0014] Furthermore, a hanging ring is provided at the upper end of the sampling column, one side of the sampling column is an open side, and a sealing plate is hingedly provided on the open side of the sampling column.

[0015] The technical solution of the present invention has at least the following advantages and beneficial effects: when in use, the geotechnical survey sampling device of the present invention fixes the connecting rope on the sampling column, and then sends the sampling column into a pre-drilled borehole. When the sampling column is lowered to the deepest point, it starts to be pulled upward. During the pulling-up process, when the depth required for sampling is reached, the sampler is driven to expand by the driving device, that is, the first connecting plate and the second connecting plate are pushed to rotate outward around the rotating shaft, so that the sampling box is away from the sampling column and rests on the inner wall of the borehole. During the whole process, the sampling column will not stop rising. Therefore, when the sampling box is attached to the inner wall of the borehole, a part of the rock and soil on the inner wall of the borehole will be scraped off and collected in the sampling box. Then the sampling box is set close to the sampling column under the action of the first connecting plate and the second connecting plate. When moving to different depths, different sampling components can be used for sampling, and the operation method is exactly the same. Therefore, this device can accurately sample rock and soil samples at different depths at one time, and can also sample rock and soil samples at extremely deep depths. It can effectively improve the sampling efficiency of multi-depth samples and reduce the time consumed in the sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a geotechnical survey and sampling device provided in an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the internal structure of a geotechnical survey and sampling device provided in an embodiment of the present invention;

[0018] Figure 3 A schematic structural diagram of a sampler provided by an embodiment of the present invention after being unfolded from one viewing angle;

[0019] Figure 4 A schematic diagram of the structure of the sampler provided by an embodiment of the present invention after being unfolded from two perspectives;

[0020] Figure 5 A schematic diagram of the internal structure of the sampler after it is unfolded according to an embodiment of the present invention;

[0021] Figure 6A schematic structural diagram of a state of a push rod provided by an embodiment of the present invention;

[0022] Figure 7 A schematic structural diagram of the two states of the ejector provided by an embodiment of the present invention;

[0023] Figure 8 for Figure 2 Enlarged view of part A.

[0024] Icons: 10-sampling column, 11-sealing plate, 12-hanging ring, 20-sampler, 21-first connecting plate, 22-second connecting plate, 23-sampling box, 24-rotating shaft, 25-cover plate, 26-first through hole, 30-driving device, 31-driving tube, 32-sliding tube, 33-sliding rod, 34-shifting rod, 35-counterweight, 36-pull rope, 37-compressed gas cylinder, 38-air guide tube, 39-spring, 310-air relief valve, 311-limiting ring, 312-sliding block, 313-top rod, 314-pull rod, 315-ring, 316-second through hole. DETAILED DESCRIPTION

[0025] Example

[0026] The following is further described in conjunction with specific embodiments. Figure 1 -Attached Figure 8 As shown, the geotechnical survey sampling device of this embodiment includes a vertically arranged and hollow sampling column 10, and a plurality of sampling assemblies arranged on the sampling column 10; the plurality of sampling assemblies are distributed in the vertical direction; the sampling assembly includes a pair of samplers 20 respectively arranged on opposite sides of the sampling column 10, and a driving device 30 arranged inside the sampling column 10; the sampler 20 includes a first connecting plate 21 hinged to the outer wall of the sampling column 10, a second connecting plate 22 hinged to the outer wall of the sampling column 10, and a sampling box 23 hinged to the first connecting plate 21 and the second connecting plate 22; the second connecting plate 22 is arranged above the first connecting plate 21, the first connecting plate 21 and the second connecting plate 22 are equal in length and parallel to each other, and the opening of the sampling box 23 is arranged upward; the first connecting plate 21 is hinged to the outer wall of the sampling column 10 through a horizontally arranged rotating shaft 24, and the driving device 30 is used to drive the first connecting plate 21 to rotate around the rotating shaft 24 as the center. Specifically, when in use, the connecting rope is fixed to the sampling column 10, and then the sampling column 10 is sent into the pre-drilled borehole. When the sampling column 10 is lowered to the deepest point, it starts to be pulled upward. During the pulling process, when the depth required for sampling is reached, the sampler 20 is driven to expand by the driving device 30, that is, the first connecting plate 21 and the second connecting plate 22 are pushed to rotate outward around the rotating shaft 24, so that the sampling box 23 is away from the sampling column 10 and rests on the inner wall of the borehole (such as the attached Figure 3 -Attached Figure 5As shown), the sampling column 10 will not stop rising during the entire process. Therefore, when the sampling box 23 is attached to the inner wall of the borehole, a portion of the rock and soil on the inner wall of the borehole will be scraped off and collected in the sampling box 23. Then, the sampling box 23 is placed close to the sampling column 10 under the action of the first connecting plate 21 and the second connecting plate 22. When moving to different depths, different sampling components can be used for sampling, and the operation method is exactly the same. Therefore, this device can accurately sample rock and soil samples of different depths at one time, and can also sample rock and soil samples at extremely deep depths. It can effectively improve the sampling efficiency of multi-depth samples and reduce the time consumed in the sampling process. It should be noted that the outer wall of the sampling column 10, the first connecting plate 21, the second connecting plate 22 and the sampling box 23 form a parallelogram structure, which can make the sampling box 23 always stable and better contact the hole wall and sample. The drive device 30 can be controlled remotely (e.g., by wired or wireless connection), activated on a timed basis (requiring control over the speed of the connecting rope), or activated by air pressure (with varying air pressures at different depths). Furthermore, this device is primarily intended for sampling softer soil layers. For very hard, pure rock samples, sufficient samples may not be obtained. Therefore, it is recommended to conduct a preliminary seismic survey before deciding whether to use this device for sampling based on the actual situation.

[0027] The driving device 30 in this embodiment includes a driving tube 31 vertically arranged in the sampling column 10 and sealed at both ends, an air supply device connected to the driving tube 31, an air release valve 310 provided on the driving tube 31, a sliding tube 32 horizontally arranged and connected to the side of the driving tube 31, a sliding rod 33 sealingly slidingly arranged in the sliding tube 32, and a shifting rod 34 horizontally arranged on the sliding rod 33 at one end outside the sampling column 10; the sliding rod 33 passes through the side wall of the sampling column 10; the first connecting plate 21 is a hollow structure, and a first through hole 26 is opened on the side of the first connecting plate 21 close to the sampling column 10; the sliding rod 33 is arranged through the first through hole 26, and the shifting rod 34 is arranged inside the first connecting plate 21. Specifically, the gas supply device can instantly provide a large amount of compressed gas, which quickly fills the drive tube 31 and pushes the slide rod 33 to move within the slide tube 32. The slide rod 33, via the lever 34, pushes the first connecting plate 21 to rotate about the rotation axis 24, thereby pushing the sampling box 23 to the hole wall. When the sampling box 23 contacts the hole wall, the sampling column 10 is still in an upward state. Therefore, during the short period of contact with the hole wall and upward movement, the sampling box 23 continuously scrapes the rock and soil samples from the hole wall and collects them in the sampling box 23. The gas supply device only provides high-pressure gas for a short period of time, so the gas in the drive tube 31 and slide tube 32 gradually and slowly discharges through the air release valve 310. At this time, the sampling box 23, the first connecting plate 21, and the second connecting plate 22 slowly descend under the action of their own gravity, gradually moving the sampling box 23 away from the hole wall (at this time, sampling is no longer possible). Eventually, the sampling box 23 returns to its previous position (close to the sampling column 10), completing the sampling operation.

[0028] The drive device 30 in this embodiment also includes a counterweight 35 slidably disposed within the drive tube 31, a second through-hole 316 defined in the counterweight 35, and a pair of pull cords 36 disposed on the upper side of the counterweight 35. The pull cords 36 are respectively connected to the pair of slide bars 33. Specifically, the counterweight 35 can pull the slide bars 33 via the pull cords 36, thereby more quickly returning the first connecting plate 21, the second connecting plate 22, and the sampling box 23 to their pre-sampling positions (i.e., closer to the sampling column 10). This prevents the sampling box 23 from prolonged contact with the hole wall during the upward movement of the sampling column 10, thereby hindering the movement of the sampling column 10.

[0029] The drive device 30 in this embodiment further includes a spring 39 disposed below the counterweight 35. The upper end of the spring 39 is connected to the counterweight 35, and the lower end of the spring 39 is connected to the inner bottom wall of the drive tube 31. Specifically, the spring 39 and the counterweight 35 work together to increase the speed at which the sampling box 23 falls.

[0030] The gas supply device in this embodiment includes a compressed gas cylinder 37 arranged inside the sampling column 10, an air guide tube 38 arranged at the gas outlet of the compressed gas cylinder 37, and a valve arranged on the air guide tube 38; the air guide tube 38 is connected to the drive tube 31. There is a pair of air guide tubes 38, and both of the air guide tubes 38 are connected to the drive tube 31; when the compressed gas cylinder 37 does not supply gas to the drive tube 31, one air guide tube 38 is arranged above the counterweight 35, and the other air guide tube 38 is arranged below the counterweight 35. Specifically, by storing high-pressure gas in the compressed gas cylinder 37, instantaneous high-pressure gas can be provided to the drive tube 31 more effectively. The opening time of the valve can be pre-set, and the valve can be activated by manual remote operation. The reason for providing the air ducts 38 on both the upper and lower sides of the counterweight 35 is that if the air duct 38 is only provided above the counterweight 35, the gas entering the drive tube 31 from the air duct 38 will exert a downward force on the counterweight 35. Although this force can be reduced by the second through hole 316, it will still generate a reverse pulling force on the movement of the slide bar 33, which is not conducive to the slide bar 33 pushing the rod sampling box 23 to unfold. Therefore, the air duct 38 is provided below the counterweight 35. By introducing some gas below the air duct 38, the counterweight 35 can be pushed upward, which significantly reduces or even eliminates the reverse pulling force of the counterweight 35 on the movement of the slide bar 33.

[0031] In this embodiment, a limiting ring 311 is fixed to the upper end of the driving tube 31, a slider 312 is provided on the upper side of the limiting ring 311, and a push rod 313 is fixed on the upper side of the slider 312; the push rod 313 passes through the upper end of the driving tube 31 and extends outward, and the slider 312 is located above the sliding tube 32; a horizontally arranged pull rod 314 is provided on the end of the sliding tube 32, and a horizontally arranged collar 315 is provided on the end of the pull rod 314 away from the sliding rod 33; when the compressed gas cylinder 37 does not supply gas to the driving tube 31, a pair of collars 315 are pressed The centers of the circles are all located on the axis of the drive tube 31; the upper end of the push rod 313 passes through the lower end wall of the drive tube 31 located above it and is arranged in the drive tube 31, and the slider 312 is connected to the upper end of the drive tube 31 by magnetic attraction; when the drive tube 31 where the slider 312 is located is not supplied with gas from the compressed gas cylinder 37, the push rod 313 on the slider 312 is located on the lower side of the pair of rings 315; when the drive tube 31 where the slider 312 is located is supplied with gas from the compressed gas cylinder 37, the push rod 313 on the slider 312 is inserted into the pair of rings 315. Specifically, during the sampling process, the uppermost sampling component samples first, and then the lower sampling components sample in turn. After the upper sampling component completes sampling, the slide rod 33 returns to the position before sampling under the pulling force of the counterweight block 35 and the spring 39. At this time, the pair of rings 315 on the pair of slide rods 33 are inside the drive tube 31 (as shown in the attached figure). Figure 6As shown in the figure), after a certain period of time, the sampling assembly below starts sampling. During the sampling process, the compressed gas cylinder 37 fills the driving tube 31 with high-pressure gas. The gas not only pushes the slide bar 33 to move, but also pushes the slider 312 and the push rod 313 above the slide bar 33 to move. The upper end of the push rod 313 is located in the driving tube 31 above it. After the push rod 313 moves up, it will be inserted into the collar 315 in the sampling assembly above it (as shown in the figure). Figure 7 As shown, the slider 312 and the upper end of the drive tube 31 are magnetically attracted to each other, preventing the slider 312 and the push rod 313 from moving downward. Since the push rod 313 is inserted into the pair of collars 315, the collars 315 cannot move horizontally. This means that the pull rod 314, the slider 33, and the lever 34 cannot move. This restraint by the lower sampling assembly above the upper sampling assembly ensures that the sample cartridge 23 in the sampling assembly, which has already been sampled, will not be affected by various collisions during the ascent of the sampling column 10, causing it to expand. This ensures the normal ascent of the sampling column 10, preventing it from getting stuck in the drill hole and preventing the sample in the sampling cartridge 23 from spilling.

[0032] In this embodiment, a cover plate 25 is fixedly mounted on the side of the second connecting plate 22 away from the sampling column 10. When the sampling box 23 is close to the sampling column 10, the cover plate 25 covers the opening of the sampling box 23. Specifically, after sampling is completed, the cover plate 25 can cover the sampling box 23 to prevent the sample from spilling.

[0033] The sampling box 23 in this embodiment is a vertically arranged flat structure. The side of the sampling box 23 away from the sampling column 10 is curved, and a cutting edge is provided on the upper end of the side of the sampling box 23 away from the sampling column 10. Specifically, this allows the sampling box 23 to better fit the hole wall and effectively scrape the rock and soil samples on the hole wall to the interior of the sampling box 23.

[0034] In this embodiment, the sampling column 10 is provided with a hanging ring 12 at its upper end. One side of the sampling column 10 is open, and a sealing plate 11 is hingedly connected to the open side of the sampling column 10. Specifically, a connecting rope can be connected via the hanging ring 12. Opening the sealing plate 11 allows the drive device 30 within the sampling column 10 to be reset, such as by pulling down the push rod 313 to replenish the compressed gas cylinder 37.

[0035] In summary, the geotechnical survey sampling device of this embodiment is used by fixing the connecting rope on the sampling column 10, and then sending the sampling column 10 into the pre-drilled borehole. When the sampling column 10 is lowered to the deepest point, it starts to be pulled upward. During the pulling-up process, when the depth required for sampling is reached, the sampler 20 is driven to unfold by the driving device 30, that is, the first connecting plate 21 and the second connecting plate 22 are pushed to rotate outward around the rotating shaft 24, so that the sampling box 23 is away from the sampling column 10 and rests on the inner wall of the borehole. During the whole process, the sampling column 10 will not stop rising. Therefore, when the sampling box 23 is attached to the inner wall of the borehole, a part of the rock and soil on the inner wall of the borehole will be scraped off and collected in the sampling box 23. Then the sampling box 23 is set close to the sampling column 10 again under the action of the first connecting plate 21 and the second connecting plate 22. When moving to different depths, different sampling components can be used for sampling, and the operation method is exactly the same. Therefore, this device can accurately sample rock and soil samples at different depths at one time, and can also sample rock and soil samples at extremely deep depths. It can effectively improve the sampling efficiency of multi-depth samples and reduce the time consumed in the sampling process.

[0036] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A rock and soil survey sampling device, characterized in that: It comprises a vertically arranged and hollow sampling column (10), and a plurality of sampling components arranged on the sampling column (10); the plurality of sampling components are distributed along the vertical direction; The sampling assembly comprises a pair of samplers (20) respectively arranged on opposite sides of the sampling column (10), and a driving device (30) arranged inside the sampling column (10); The sampler (20) comprises a first connecting plate (21) hinged to the outer wall of the sampling column (10), a second connecting plate (22) hinged to the outer wall of the sampling column (10), and a sampling box (23) hinged to both the first connecting plate (21) and the second connecting plate (22); the second connecting plate (22) is arranged above the first connecting plate (21); the first connecting plate (21) and the second connecting plate (22) are of equal length and parallel to each other; the sampling box (23) is arranged with its opening facing upward; The first connecting plate (21) is hinged to the outer wall of the sampling column (10) via a horizontally arranged rotating shaft (24), and the driving device (30) is used to drive the first connecting plate (21) to rotate with the rotating shaft (24) as the center; The driving device (30) includes a driving tube (31) vertically arranged in the sampling column (10) and sealed at both ends, an air supply device connected to the driving tube (31), an air release valve (310) arranged on the driving tube (31), a sliding tube (32) horizontally arranged and connected to the side of the driving tube (31), a sliding rod (33) sealingly slidingly arranged in the sliding tube (32), and a shifting rod (34) horizontally arranged on the sliding rod (33) at one end outside the sampling column (10); the sliding rod (33) passes through the side wall of the sampling column (10); The first connecting plate (21) is a hollow structure, and a first through hole (26) is provided on a side of the first connecting plate (21) close to the sampling column (10); the sliding rod (33) is arranged through the first through hole (26), and the shifting rod (34) is arranged inside the first connecting plate (21); The driving device (30) further comprises a counterweight (35) slidably disposed in the driving tube (31), a second through hole (316) provided on the counterweight (35), and a pair of pull ropes (36) disposed on the upper side of the counterweight (35); the pair of pull ropes (36) are respectively connected to the pair of sliding rods (33); The gas supply device comprises a compressed gas cylinder (37) arranged inside the sampling column (10), an air guide tube (38) arranged at the gas outlet of the compressed gas cylinder (37), and a valve arranged on the air guide tube (38); the air guide tube (38) is communicated with the driving tube (31); A pair of the air guide tubes (38) are provided, and both of the pair of air guide tubes (38) are connected to the driving tube (31); When the compressed gas cylinder (37) does not supply gas to the driving tube (31), one of the air guide tubes (38) is arranged above the counterweight (35), and the other air guide tube (38) is arranged below the counterweight (35); A limiting ring (311) is fixedly provided at the upper end of the interior of the driving tube (31), a slider (312) is provided on the upper side of the limiting ring (311), and a push rod (313) is fixedly provided on the upper side of the slider (312); the push rod (313) passes through the upper end of the driving tube (31) and extends outward, and the slider (312) is located above the sliding tube (32); A horizontally arranged pull rod (314) is provided at one end of the slide rod (33) located in the slide tube (32), and a horizontally arranged collar (315) is provided at one end of the pull rod (314) away from the slide rod (33); when the compressed gas cylinder (37) does not supply gas to the drive tube (31), the centers of the pair of collars (315) are both located on the axis of the drive tube (31); The upper end of the push rod (313) passes through the lower end wall of the driving tube (31) located above it and is then arranged in the driving tube (31), and the slider (312) is connected to the upper end of the driving tube (31) by magnetic attraction; When the driving tube (31) where the slider (312) is located is not supplied with gas from the compressed gas cylinder (37), the push rod (313) on the slider (312) is located at the lower side of the pair of collars (315); when the driving tube (31) where the slider (312) is located is supplied with gas from the compressed gas cylinder (37), the push rod (313) on the slider (312) is inserted into the pair of collars (315).

2. The rock and soil survey sampling device according to claim 1, characterized in that: The driving device (30) further includes a spring (39) provided on the lower side of the counterweight (35); the upper end of the spring (39) is connected to the counterweight (35), and the lower end of the spring (39) is connected to the inner bottom wall of the driving tube (31).

3. The rock and soil survey sampling device according to claim 1, characterized in that: A cover plate (25) is fixedly provided on the side of the second connecting plate (22) away from the sampling column (10); when the sampling box (23) is close to the sampling column (10), the cover plate (25) covers the opening side of the sampling box (23).

4. The rock and soil survey sampling device according to claim 1, characterized in that: The sampling box (23) is a flat structure arranged vertically. The side of the sampling box (23) away from the sampling column (10) is arc-shaped. The upper end of the side of the sampling box (23) away from the sampling column (10) is provided with a cutting edge.

5. The rock and soil survey sampling device according to claim 1, characterized in that: A hanging ring (12) is provided at the upper end of the sampling column (10), one side of the sampling column (10) is an open side, and a sealing plate (11) is hingedly provided on the open side of the sampling column (10).

Images