Soil sampling equipment for hydrogeological survey

Abstract

The invention discloses soil sampling equipment for hydrogeological survey, and relates to the technical field of hydrological soil sampling. Comprising a soil fishing device, two shielding control pieces are installed on the soil fishing device, and the two shielding control pieces are used for detecting and fishing shielding objects; a magnetic guide piece is mounted on the soil fishing device; the magnetic guiding piece is used for guiding a fishing position; a skew control piece is mounted on the soil fishing device; the shielding control piece is adopted for detecting the sampling condition of a mud bottom layer, the structure can test and limit the depth of the two fishing buckets inserted into the mud, the skew control piece can further detect the horizontality of the structure during underwater soil sampling, and the situation that the sampling amount is affected due to excessive skew is avoided; the problems that according to existing soil sampling equipment for hydrogeological survey, it is difficult to keep the consistency of sampling positions every time, the lowering speed is inconvenient to control, and the sampling positions are inconvenient to automatically monitor and control are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogeological soil sampling, and specifically to a soil sampling device for hydrogeological exploration. Background Art

[0002] In actual hydrogeological exploration work, soil sampling is required, mainly for sampling underwater mud to obtain mapping information such as geography. When conducting the sampling work, a lever dredging bucket is mainly used to sample water and soil together. Using the lever principle, it automatically closes when the lever dredging bucket is lifted. The sampling quality of water and soil is directly related to the sample accuracy. Currently, the soil sampling devices for hydrogeological exploration usually need to be manually towed and lowered to the bottom of the water. It is difficult to maintain the consistency of the sampling position each time during multiple tests, which affects the accuracy of multiple samplings. When lowering the sampling device, it is not convenient to control the lowering speed. If the lowering speed is too fast, it will directly affect the soil distribution and reduce the sample accuracy. At the same time, it is not convenient to automatically control the rationality of the soil sampling position. In order to sample faster, the staff is prone to directly sample in the soil with a high inclination or a large number of stones. The sampling position is not convenient for automatic monitoring and control, further affecting the sampling quality.

[0003] Therefore, we propose a soil sampling device for hydrogeological exploration. Summary of the Invention

[0004] The purpose of the present invention is to provide a soil sampling device for hydrogeological exploration to solve the problems in the above background art that the current soil sampling devices for hydrogeological exploration are difficult to maintain the consistency of the sampling position each time, not convenient to control the lowering speed, and the sampling position is not convenient for automatic monitoring and control.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A soil sampling device for hydrogeological exploration, including a soil dredging device, on which two shielding control parts are installed, and the two shielding control parts are used to detect the dredging shielding objects; a magnetic guiding part is installed on the soil dredging device; the magnetic guiding part is used to guide the dredging position; a skew control part is installed on the soil dredging device; the skew control part is used to detect the state of the soil dredging device; a water lowering speed limiting part is installed on the soil dredging device; the water lowering speed limiting part is used to control the water lowering speed; a layered sampling part is installed on the soil dredging device; the layered sampling part is used to separate the bottom layer of water; the soil dredging device includes: a dredging bucket and a support rod. There are two dredging buckets, and the two dredging buckets are connected by a hinge; rubber rings are respectively arranged on the inner sides of the two dredging buckets; support rods are respectively fixedly installed on both sides of the front dredging bucket, and the two support rods are respectively attached to both sides of the other dredging bucket.

[0006] Preferably, the soil scooping device further includes: a magnetic attraction connecting rod, a tightening electromagnet, a swinging secondary rod, a magnetic attraction iron block, and an opening magnet. A magnetic attraction connecting rod is fixedly installed on the front side of the scooping bucket, and two tightening electromagnets are fixedly installed on the magnetic attraction connecting rod; a swinging secondary rod is fixedly installed on the rear side of the scooping bucket; the swinging secondary rod is located inside the magnetic attraction connecting rod; a magnetic attraction iron block is fixedly installed on the swinging secondary rod; when the tightening electromagnet attracts the magnetic attraction iron block, the two scooping buckets are in a closed state; opening magnets are fixedly embedded on the sides of the two scooping buckets respectively.

[0007] Preferably, the shielding control member includes: a shielding installation strip, a guiding shaft, a pressing strip, and an adjusting screw. Shielding installation strips are fixedly installed on the sides of the two scooping buckets respectively; three guiding shafts are slidably installed on the two shielding installation strips respectively; pressing strips are fixedly installed at the bottoms of the three guiding shafts respectively, and the pressing strips are attached to the sides of the scooping buckets; an adjusting screw is threadedly connected to the shielding installation strip, and two nuts are threadedly connected to the adjusting screw. The two nuts on the adjusting screw are respectively attached to both sides of the shielding installation strip; the pressing strip is used to be extruded by the underwater soil.

[0008] Preferably, the shielding control member further includes: a microswitch. A microswitch is fixedly installed at the bottom of the adjusting screw, and the microswitch is aligned with the pressing strip.

[0009] Preferably, the magnetic force guiding member includes: a guiding column, an anchoring shaft, a limiting sliding sleeve, and a limiting elastic sheet. The guiding column is of a hexagonal shaft structure; two anchoring shafts are fixedly installed at the bottom of the guiding column; a limiting sliding sleeve is slidably sleeved on the guiding column; two limiting elastic sheets are fixedly installed on the limiting sliding sleeve, and the two limiting elastic sheets are respectively of an elastic steel sheet structure; the anchoring shaft is used to be inserted into the underwater anchor.

[0010] Preferably, the magnetic force guiding member further includes: a speed limiting electromagnet, an expanding electromagnet, and a pulling steel wire. Speed limiting electromagnets are fixedly installed on the two limiting elastic sheets respectively; the speed limiting electromagnet is used to attract the guiding column; two expanding electromagnets are installed on the limiting sliding sleeve through two elastic steel sheets, and the two expanding electromagnets respectively attract and fit the two opening magnets; a pulling steel wire is fixedly installed on the limiting sliding sleeve.

[0011] Preferably, the skew control member includes: a skew detection frame, a skew control switch, and a rotary ball head. The skew detection frame is fixedly installed at the bottom of the magnetic attraction connecting rod; a skew control switch is fixedly installed inside the skew detection frame; a rotary ball head is rotatably sleeved on the skew detection frame; the rotary ball head is of a spherical structure; the rotary ball head is located below the skew control switch; the skew control switch and the microswitch are electrically connected to the expanding electromagnet; the skew control switch is electrically connected to the speed limiting electromagnet.

[0012] Preferably, the skew control member further includes: a counterweight ball and a swing column. The counterweight ball is fixedly installed at the bottom of the rotary ball head; a swing column is fixedly installed on the rotary ball head; the top of the swing column is an arc structure; the swing column is attached to the bottom of the skew control switch; the counterweight ball is a spherical structure; the counterweight ball is used to traction the counterweight.

[0013] Preferably, the underwater speed limiting member includes: a limit detection sleeve, a lifting shaft, a pressing rod and a resistance disk. The limit detection sleeve is fixedly installed on the side of the magnetic attraction connecting rod; the lifting shaft is slidably inserted into the limit detection sleeve; the pressing rod is fixedly installed at the bottom of the lifting shaft, and the pressing rod is a cylindrical structure; the pressing rod is located on the side of the counterweight ball; a resistance disk is fixedly installed on the pressing rod; when the two fishing buckets are in an open state, the resistance disk is in a horizontal state.

[0014] Preferably, the layered sampling member includes: a layered detection cylinder and a sealing cover. The layered detection cylinder is slidably inserted on the fishing bucket; the sealing cover is threadedly connected to the layered detection cylinder; the layered detection cylinder is used for sucking soil water.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] When the present invention uses the magnetic force guiding member to lower the soil fishing device, it can use the magnetic force to keep the two fishing buckets stably open, avoiding the traditional buckle structure which is easy to loosen. The guiding column and the limit sliding sleeve can realize radial and axial limits, keeping the sampling position unified each time, improving the sample accuracy when sampling at positions that require multiple samplings, and avoiding the problem that traditional sampling by manual usually only samples once. Using the magnetic attraction iron block and the tightening electromagnet can ensure the tight closure of the structure after the two fishing buckets are closed.

[0017] The shielding control member can be used to detect the sampling conditions at the mud bottom layer. This structure can test and limit the depth of insertion of the two fishing buckets into the soil. If there are large stones or garbage and other shielding objects at the underwater soil sampling position, at this time, the shielding control member can control the expansion electromagnet to maintain the magnetic force, avoiding direct sampling by staff in violation of regulations. Direct sampling in the presence of shielding objects will affect the sampling volume and cause the sample to be not standard. The skew control member can further detect the horizontality of the structure during underwater soil sampling, avoiding excessive skew that affects the sampling volume. Only when the sampling horizontality is ensured can the sampling be closed. At the same time, after the first sampling of the overly skewed soil plane, more surrounding soil will collapse to the sampling point, and a large amount of collapsed soil will be taken out during the second sampling, affecting the sampling quality.

[0018] The underwater speed limit component can detect the speed when the structure is lowered for sampling, avoiding the problem that the sampling bucket directly hits the soil surface when the lowering speed is too fast, causing turbidity at the sampling point and affecting the original appearance of the soil at the sampling point. This structure can automatically use magnetic friction to reduce the speed, which can improve the operation flexibility of the staff and the sampling success rate; using the layered sampling component can facilitate the suction and discharge of the upper-layer moisture before opening the two sampling buckets, which is convenient for the staff to preserve samples of hydrology and soil respectively, and avoid the soil sample being washed away by water. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the installation position of the shielding control component of the present invention;

[0020] Figure 2 Schematic diagram of the structure of a soil sampling device for hydrogeological exploration of the present invention;

[0021] Figure 3 Cross-sectional view of the internal structure of a soil sampling device for hydrogeological exploration of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the soil sampling device of the present invention;

[0023] Figure 5 For the present invention Figure 3 Enlarged view of the structure of area B in;

[0024] Figure 6 Schematic diagram of the structure of the magnetic guiding component of the present invention;

[0025] Figure 7 Schematic diagram of the structure of the skew control component of the present invention;

[0026] Figure 8 Schematic diagram of the structure of the underwater speed limit component of the present invention;

[0027] Figure 9 For the present invention Figure 3 Enlarged view of the structure of area C in;

[0028] Figure 10 Schematic diagram of the structure of the layered sampling component of the present invention.

[0029] In the figure: 1. Soil scooping device; 101. Scooping bucket; 1011. Support rod; 102. Magnetic connection rod; 1021. Tightening electromagnet; 103. Swing secondary rod; 1031. Magnetic iron block; 104. Open magnet; 2. Shielding control part; 201. Shielding installation strip; 202. Guide shaft; 203. Pressing strip; 204. Adjusting screw; 205. Microswitch; 3. Magnetic guiding part; 301. Guide post; 302. Anchoring shaft; 303. Limit sliding sleeve; 3031. Limit elastic piece; 304. Speed limit electromagnet; 305. Expansion electromagnet; 306. Pulling steel wire; 4. Skew control part; 401. Skew detection frame; 402. Skew control switch; 403. Rotary ball head; 4031. Counterweight ball; 404. Swing column; 5. Underwater speed limiting part; 501. Limit detection sleeve; 502. Lifting shaft; 503. Extrusion rod; 504. Resistance disc; 6. Stratified sampling part; 601. Stratified detection cylinder; 602. Sealing cover. Detailed implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: Please refer to Figures 1 to 10 as shown:

[0032] The present invention provides a technical solution: A soil sampling device for hydrogeological exploration, including a soil scooping device 1, two shielding control parts 2 are installed on the soil scooping device 1, and the two shielding control parts 2 are used to detect scooping obstacles; a magnetic guiding part 3 is installed on the soil scooping device 1; the magnetic guiding part 3 is used to guide the scooping position; a skew control part 4 is installed on the soil scooping device 1; the skew control part 4 is used to detect the state of the soil scooping device 1; a water speed limiting part 5 is installed on the soil scooping device 1; the water speed limiting part 5 is used to control the water inlet speed; a stratified sampling part 6 is installed on the soil scooping device 1; the stratified sampling part 6 is used to separate the bottom water; the soil scooping device 1 includes: a scooping bucket 101 and a support rod 1011, there are two scooping buckets 101, and the two scooping buckets 101 are connected by a hinge; the scooping bucket 101 is made of iron; rubber rings are respectively arranged on the inner sides of the two scooping buckets 101; support rods 1011 are respectively fixedly installed on both sides of the front scooping bucket 101, and the two support rods 1011 are respectively attached to both sides of the other scooping bucket 101.

[0033] Among them, the soil scooping device 1 further includes: a magnetic attraction connecting rod 102, a tightening electromagnet 1021, a swinging secondary rod 103, a magnetic attraction iron block 1031, and an opening magnet 104. A magnetic attraction connecting rod 102 is fixedly installed on the front scooping bucket 101, and two tightening electromagnets 1021 are fixedly installed on the magnetic attraction connecting rod 102; a swinging secondary rod 103 is fixedly installed on the rear scooping bucket 101; the swinging secondary rod 103 is located inside the magnetic attraction connecting rod 102; a magnetic attraction iron block 1031 is fixedly installed on the swinging secondary rod 103; when the tightening electromagnet 1021 attracts the magnetic attraction iron block 1031, the two scooping buckets 101 are in a closed state; opening magnets 104 are respectively fixedly embedded on the sides of the two scooping buckets 101; the magnetic force guiding member 3 includes: a guiding column 301, an anchoring shaft 302, a limiting sliding sleeve 303, and a limiting elastic sheet 3031. The guiding column 301 is a hexagonal shaft structure; two anchoring shafts 302 are fixedly installed at the bottom of the guiding column 301; a limiting sliding sleeve 303 is slidably sleeved on the guiding column 301; two limiting elastic sheets 3031 are fixedly installed on the limiting sliding sleeve 303, and the two limiting elastic sheets 3031 are respectively elastic steel sheet structures; the anchoring shaft 302 is used to insert and anchor at the bottom of the water; the magnetic force guiding member 3 further includes: a speed limiting electromagnet 304, an expanding electromagnet 305, and a pulling steel wire 306. Speed limiting electromagnets 304 are respectively fixedly installed on the two limiting elastic sheets 3031; the speed limiting electromagnet 304 is used to attract the guiding column 301; two expanding electromagnets 305 are installed on the limiting sliding sleeve 303 through two elastic steel sheets, and the two expanding electromagnets 305 respectively attract and fit the two opening magnets 104; a pulling steel wire 306 is fixedly installed on the limiting sliding sleeve 303. By using the magnetic force guiding member 3 to cooperate with the soil scooping device 1, guiding work can be realized, the stability of the soil scooping device 1 when sinking to the bottom of the water can be improved. At the same time, in this structure, when lowering the soil scooping device 1, the two scooping buckets 101 can be kept stably open by using magnetic force, avoiding the problem that the traditional buckle structure is easy to loosen when shaking. At the same time, in this structure, the guiding column 301 and the limiting sliding sleeve 303 are used to realize radial and axial limiting, keeping the sampling position unified each time. When sampling at a position that requires multiple samplings, the sample accuracy can be improved, avoiding the problem that it is difficult for traditional sampling to keep the lowering position accurate each time, and usually only single sampling can be performed. By using the magnetic attraction iron block 1031 to cooperate with the tightening electromagnet 1021, the closing stability of this structure after the two scooping buckets 101 are closed can be ensured, avoiding the problem that the traditional method of closing by relying on the lever under its own weight is not tight enough.

[0034] Among them, the occlusion control member 2 includes: an occlusion mounting strip 201, a guide shaft 202, a pressing strip 203, and an adjustment screw 204. Occlusion mounting strips 201 are fixedly installed on the sides of the two scooping buckets 101 respectively; three guide shafts 202 are slidably installed on the two occlusion mounting strips 201 respectively; pressing strips 203 are fixedly installed at the bottoms of the three guide shafts 202, and the pressing strip 203 is attached to the side of the scooping bucket 101; an adjustment screw 204 is threadedly connected to the occlusion mounting strip 201, and two nuts are threadedly connected to the adjustment screw 204. The two nuts on the adjustment screw 204 are respectively attached to both sides of the occlusion mounting strip 201; the pressing strip 203 is used to be squeezed by the bottom soil; the occlusion control member 2 further includes: a microswitch 205. A microswitch 205 is fixedly installed at the bottom of the adjustment screw 204, and the microswitch 205 is aligned with the pressing strip 203. The occlusion control member 2 can be used to detect the sampling conditions of the mud bottom layer. This structure can test and limit the depth of insertion of the two scooping buckets 101 into the soil. If there are large stones or garbage and other obstacles at the sampling position of the bottom soil, at this time, the occlusion control member 2 can be used to control the expansion electromagnet 305 to maintain the magnetic force, avoiding direct sampling by the staff in violation of regulations. Direct sampling in the presence of obstacles will affect the sampling volume, resulting in non-standard samples and unable to fully reflect the situation of the bottom soil. This structure can improve the sampling quality, standardize the operation of the staff, ensure that the standard insertion depth can be achieved when sampling the soil, and at the same time, the standard depth can be adjusted by using the adjustment screw 204. By adjusting the positions of the two nuts on the adjustment screw 204, the distance between the pressing strip 203 and the microswitch 205 can be adjusted. Under the action of its own weight, the pressing strip 203 moves away from the microswitch 205. As the scooping bucket 101 is inserted into the bottom soil, at this time, the soil will squeeze the pressing strip 203 to move upward, and then squeeze the microswitch 205. At this time, the expansion electromagnet 305 can be powered off to release the limit on the two scooping buckets 101, so that the scooping buckets 101 can be normally closed.

[0035] Among them, the skew control member 4 includes: a skew detection frame 401, a skew control switch 402, and a rotary ball head 403. The skew detection frame 401 is fixedly installed at the bottom of the magnetic attraction connecting rod 102; a skew control switch 402 is fixedly installed inside the skew detection frame 401; a rotary ball head 403 is rotatably sleeved on the skew detection frame 401; the rotary ball head 403 is a spherical structure; the rotary ball head 403 is located below the skew control switch 402; the skew control switch 402 and the micro switch 205 are electrically connected to the expansion electromagnet 305; the skew control switch 402 is electrically connected to the speed limit electromagnet 304; the skew control member 4 further includes: a counterweight ball 4031 and a swing column 404. The counterweight ball 4031 is fixedly installed at the bottom of the rotary ball head 403; a swing column 404 is fixedly installed on the rotary ball head 403; the top of the swing column 404 is an arc structure; the swing column 404 is attached to the bottom of the skew control switch 402; the counterweight ball 4031 is a spherical structure; the counterweight ball 4031 is used to traction the counterweight. The underwater speed limit member 5 includes: a limit detection sleeve 501, a lifting shaft 502, a pressing rod 503, and a resistance disk 504. The limit detection sleeve 501 is fixedly installed on the side of the magnetic attraction connecting rod 102; a lifting shaft 502 is slidably inserted into the limit detection sleeve 501; a pressing rod 503 is fixedly installed at the bottom of the lifting shaft 502, and the pressing rod 503 is a cylindrical structure; the pressing rod 503 is located on the side of the counterweight ball 4031; a resistance disk 504 is fixedly installed on the pressing rod 503. When the two fishing hoppers 101 are in an open state, the resistance disk 504 is in a horizontal state. The skew control member 4 can further detect the horizontality of this structure during underwater soil sampling, avoid excessive skew that affects the sampling quantity, and ensure the sampling levelness before closing the sampling. At the same time, after the first sampling is completed on the overly skewed soil plane, more surrounding soil will collapse to the sampling point. A large amount of collapsed soil will be taken out during the second sampling, affecting the sampling quality. This structure can detect in real time. At the same time, the underwater speed limit member 5 can detect the speed of this structure during the downward sampling, avoid the fishing hopper 101 directly hitting the soil surface at too fast a downward speed, causing turbidity at the sampling point and affecting the original appearance of the soil at the sampling point. This structure can automatically reduce the speed, which can improve the operation flexibility of the staff and increase the sampling success rate. When the horizontality of the two fishing hoppers 101 meets the standard, the swing column 404 will continuously press the skew control switch 402. At this time, the expansion electromagnet 305 can be powered off to ensure that the two fishing hoppers 101 can be lifted normally. When the downward speed of the fishing hopper 101 is too fast during the lowering process, under the water resistance, the resistance disk 504 will be pushed upward, driving the pressing rod 503 to move upward and press the counterweight ball 4031. When the counterweight ball 4031 is pressed, it will shift to one side, driving the swing column 404 to swing, releasing the pressing of the skew control switch 402. The skew control switch 402 will control the speed limit electromagnet 304 to energize and attract the guide post 301, and use the friction force to reduce the descending speed of the limit sliding sleeve 303.

[0036] Example 2. On the basis of Example 1, the layered sampling member 6 includes a layered detection cylinder 601 and a closing cover 602. The layered detection cylinder 601 is slidably inserted into the fishing bucket 101. A closing cover 602 is threadedly connected to the layered detection cylinder 601. The layered detection cylinder 601 is used for sucking soil water. By using the layered sampling member 6, it is convenient for the staff to suck and discharge the water in the upper layer before opening the two fishing buckets 101 after taking out the two fishing buckets 101. It is convenient for the staff to separately preserve samples of hydrology and soil, and also prevents the problem that the soil is directly diluted when the sample mixed with soil and bottom water is taken out and the tightening electromagnet 1021 is directly controlled to be powered off and discharged directly.

[0037] Working principle of this embodiment: First, two anchoring shafts 302 are inserted into the bottom soil for positioning. Two existing steel ropes are respectively passed through the magnetic attraction connecting rod 102 and the end of the swing auxiliary rod 103 for traction connection. An operator holds the traction steel rope by hand and lowers the sampling bucket 101. The opening magnet 104 can magnetically attract and expand the electromagnet 305 to keep the opening. As the sampling bucket 101 is lowered, the limit sliding sleeve 303 will move up and down on the guiding column 301 until the sampling bucket 101 reaches the bottom. At this time, under the action of the gravity of the sampling bucket 101, the sampling bucket 101 can be inserted into the soil for subsequent sampling. Subsequently, by pulling the traction wire 306, the limit sliding sleeve 303 is lifted for the next sampling. Under its own weight, the pressing strip 203 moves away from the microswitch 205. As the sampling bucket 101 is inserted into the bottom soil, the soil will squeeze the pressing strip 203 to move upward, thereby squeezing the microswitch 205. At this time, the expansion electromagnet 305 can be powered off to release the limit on the two sampling buckets 101, enabling the sampling buckets 101 to close normally. On the contrary, if there are obstacles in the soil, the obstacles will lift the sampling bucket 101. At this time, the two microswitches 205 cannot be squeezed simultaneously. Similarly, the support rod 1011 also plays the same role. When there is an obstruction at the bottom of the support rod 1011, it will also lift the sampling bucket 101, and the two microswitches 205 cannot be squeezed simultaneously, controlling the expansion electromagnet 305 to maintain the magnetic force. After the sampling bucket 101 is lowered to the bottom soil, when the sampling bucket 101 is severely skewed, two elastic steel sheets on the limit sliding sleeve 303 are elastically connected to the expansion electromagnet 305 for support, avoiding spraining the guiding column 301 and at the same time adapting to the bottom slope. At this time, under the counterweight of the counterweight ball 4031, the rotary ball head 403 rotates, driving the swing column 404 to swing to release the extrusion of the skew control switch 402. At this time, the skew control switch 402 will control the expansion electromagnet 305 to maintain the magnetic force, realizing the suction back of the opening magnet 104. Only when the levelness of the two sampling buckets 101 meets the standard, the swing column 404 will continuously squeeze the skew control switch 402. At this time, the expansion electromagnet 305 can be powered off to ensure that the two sampling buckets 101 can be lifted normally. When an operator holds the traction steel rope and pulls the magnetic attraction connecting rod 102 and the swing auxiliary rod 103, under the action of the traction force and in cooperation with the self-weight of this structure, the magnetic attraction connecting rod 102 and the swing auxiliary rod 103 will be tractionally rotated. At this time, the two sampling buckets 101 will close. At the same time, when the magnetic attraction connecting rod 102 and the swing auxiliary rod 103 are lifted, the magnetic attraction iron block 1031 and the tightening electromagnet 1021 gradually approach and will be magnetically attracted when the distance is relatively close, keeping the two sampling buckets 101 stably closed. When the two sampling buckets 101 are lowered, the two sampling buckets 101 are controlled to expand by the magnetic force of the expansion electromagnet 305. However, if the lowering speed is too fast at this time, under the water resistance, the resistance disk 504 will be pushed upward, driving the extrusion rod 503 to move upward to squeeze the counterweight ball 4031. When the counterweight ball 4031 is squeezed, it will shift to one side, driving the swing column 404 to swing and releasing the extrusion of the skew control switch 402,The skew control switch 402 controls the speed-limiting electromagnet 304 to energize and attract the guide post 301, and uses friction to reduce the descending speed of the limit sliding sleeve 303. The limit elastic piece 3031 will be elastically adapted. The staff can rotate and remove the closed cover 602 through a water pump or a straw, then dock with the layered detection cylinder 601, and adjust the height of the layered detection cylinder 601 for suction, and independently store the taken water sample. By controlling the power-off of the tightening electromagnet 1021, the two fishing buckets 101 can be opened to collect soil samples.

[0038] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device for hydrogeological survey, comprising a soil scooping device (1), wherein two shielding control members (2) are installed on the soil scooping device (1), characterized in that: The two shielding control members (2) are used to detect shielding objects to be scooped; a magnetic guide member (3) is installed on the soil scooping device (1); the magnetic guide member (3) is used to guide the scooping position; The soil scooping device (1) is provided with a tilt control component (4); the tilt control component (4) is used to detect the state of the soil scooping device (1); the soil scooping device (1) is provided with a water launching speed limiting component (5); the water launching speed limiting component (5) is used to control the launching speed; The soil scooping device (1) is provided with a layered sampling component (6); the layered sampling component (6) is used to separate the bottom layer moisture; The soil scooping device (1) comprises: a scooping bucket (101) and a support rod (1011); two scooping buckets (101) are provided, and the two scooping buckets (101) are connected via a hinge; rubber rings are provided inside the two scooping buckets (101); and support rods (1011) are fixedly installed on both sides of the front scooping bucket (101), and the two support rods (1011) are respectively attached to both sides of the other scooping bucket (101).

2. A soil sampling device for hydrogeological survey according to claim 1, characterized in that: A magnetic connection rod (102) is fixedly mounted on the front scoop (101), and two tightening electromagnets (1021) are fixedly mounted on the magnetic connection rod (102); a swinging auxiliary rod (103) is fixedly mounted on the rear scoop (101); the swinging auxiliary rod (103) is located inside the magnetic connection rod (102); a magnetic iron block (1031) is fixedly mounted on the swinging auxiliary rod (103); when the tightening electromagnet (1021) magnetically attracts the magnetic iron block (1031), the two scoops (101) are in a closed state; and opening magnets (104) are fixedly embedded on the sides of the two scoops (101), respectively.

3. A soil sampling device for hydrogeological survey according to claim 2, characterized in that: The shielding control component (2) comprises: a shielding installation bar (201), and the side surfaces of the two scooping buckets (101) are respectively fixedly installed with the shielding installation bar (201); three guide shafts (202) are respectively slidably installed on the two shielding installation bars (201); the bottoms of the three guide shafts (202) are respectively fixedly installed with top pressure bars (203), and the top pressure bars (203) are attached to the side surfaces of the scooping bucket (101); an adjusting screw (204) is threadedly connected to the shielding installation bar (201), and two nuts are threadedly connected to the adjusting screw (204), and the two nuts on the adjusting screw (204) are respectively attached to the two sides of the shielding installation bar (201); the top pressure bar (203) is used to be squeezed by underwater soil.

4. A soil sampling device for hydrogeological survey according to claim 3, characterized in that: A micro switch (205) is fixedly mounted on the bottom of the adjusting screw rod (204), and the micro switch (205) is aligned with the top pressure strip (203).

5. A soil sampling device for hydrogeological survey according to claim 4, characterized in that: The magnetic guide (3) comprises: a guide column (301), the guide column (301) being a hexagonal shaft structure; two anchoring shafts (302) are fixedly mounted on the bottom of the guide column (301); a limiting sleeve (303) is slidably sleeved on the guide column (301); two limiting spring pieces (3031) are fixedly mounted on the limiting sleeve (303), and the two limiting spring pieces (3031) are respectively elastic steel sheet structures; and the anchoring shaft (302) is used for being inserted into the bottom of water for anchoring.

6. The soil sampling device for hydrogeological survey according to claim 5, characterized in that: The magnetic force guide (3) further comprises: a speed-limiting electromagnet (304), on which the two limiting spring sheets (3031) are respectively fixedly mounted; the speed-limiting electromagnet (304) is used to magnetically attract the guide column (301); two expansion electromagnets (305) are mounted on the limiting sleeve (303) via two elastic steel sheets, and the two expansion electromagnets (305) are respectively magnetically attracted to fit the two opening magnets (104); and a pulling steel wire (306) is fixedly mounted on the limiting sleeve (303).

7. A soil sampling device for hydrogeological survey according to claim 6, characterized in that: The skew control component (4) comprises: a skew detection frame (401), the skew detection frame (401) is fixedly mounted on the bottom of the magnetic connection rod (102); a skew control switch (402) is fixedly mounted on the inner side of the skew detection frame (401); a rotating ball head (403) is rotatably sleeved on the skew detection frame (401); the rotating ball head (403) is a spherical structure; the rotating ball head (403) is located below the skew control switch (402); the skew control switch (402) and the micro switch (205) are electrically connected to the expansion electromagnet (305); and the skew control switch (402) is electrically connected to the speed limiting electromagnet (304).

8. The soil sampling device for hydrogeological survey according to claim 7, characterized in that: The tilt control member (4) further comprises: a counterweight ball (4031), wherein the counterweight ball (4031) is fixedly mounted on the bottom of the rotating ball head (403); a swing column (404) is fixedly mounted on the rotating ball head (403); the top of the swing column (404) is an arc-shaped structure; the swing column (404) is attached to the bottom of the tilt control switch (402); the counterweight ball (4031) is a spherical structure; and the counterweight ball (4031) is used to pull the counterweight.

9. The soil sampling device for hydrogeological survey according to claim 8, characterized in that: The launching speed limiter (5) comprises: a limit detection sleeve (501), the limit detection sleeve (501) is fixedly mounted on the side of the magnetic connection rod (102); a lifting shaft (502) is slidably inserted on the limit detection sleeve (501); a squeeze rod (503) is fixedly mounted on the bottom of the lifting shaft (502), and the squeeze rod (503) is a cylindrical structure; the squeeze rod (503) is located on the side of the counterweight ball (4031); a resistance disk (504) is fixedly mounted on the squeeze rod (503); when the two scoop buckets (101) are in an open state, the resistance disk (504) is in a horizontal state.

10. The soil sampling device for hydrogeological survey according to claim 1, characterized in that: The stratified sampling member (6) comprises: a stratified detection cylinder (601), the stratified detection cylinder (601) being slidably plugged into the scooping bucket (101); a sealing cover (602) being threadedly connected to the stratified detection cylinder (601); and the stratified detection cylinder (601) being used for sucking soil water.

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