Hydrological engineering geological survey sampling device

Abstract

The utility model discloses a hydrological engineering geological survey sampling device, which comprises a bottom plate, a sampling device, a sampling device, a sampling device, a sampling device, a sampling device and a sampling device, the top center of the bottom plate is provided with a round through hole, and the four corners of the bottom are rotatably provided with universal wheels with locks; the top plate is arranged above the bottom plate, two concentric-square-shaped handles are fixedly connected to the right side of the top plate, and a first multi-stage electric telescopic rod is fixedly embedded in the bottom of the top plate; and the driving box is fixedly mounted at the bottom end of the extending end of the first multi-stage electric telescopic rod. According to the utility model, a series of structures are arranged, so that unblocking sampling is carried out after the sampling depth is reached, samples are pushed out after being moved out, accurate fixed-depth sampling is facilitated, the phenomenon that subsequent detection work is influenced due to the fact that soil samples with different depths are easily mixed is avoided, the sampling accuracy is improved, and the phenomenon that the soil samples are clamped and plugged tightly and are difficult to take out is avoided; the outer side of the sampling drill barrel can be brushed and cleaned when the sampling drill barrel is lifted after being used, and the phenomena that more soil is left on the upper portion, so that the mood of personnel is affected, and the personnel need to manually clean the soil additionally are reduced.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, specifically a hydrogeological survey sampling device. Background Technology

[0002] Geological exploration involves investigating and exploring geology using various methods and techniques. It is a primary method for studying geological information. Sampling is crucial in geological exploration, especially in hydrogeological surveys. Traditional sampling devices involve lowering a sampling drill pipe into the hydrogeological soil, utilizing the soil pressure during drilling to collect samples. However, this method has the following shortcomings:

[0003] 1. Because the bottom of the sampling tube is open, soil will continuously be squeezed into the sampling tube during the downward drilling process, resulting in a mixed soil sample from different depths. To ensure the accuracy of the test, it is necessary to accurately collect soil samples from different depths for analysis. Soil samples from multiple depths are difficult to represent hydrogeological data and cannot meet the requirements for subsequent accurate testing. 2. After sampling, soil samples may become tightly packed in the sampling tube and be difficult to remove. Personnel are required to manually tap the sampling tube to assist in removing the soil samples. However, this tapping process may deform and damage the sampling tube, making it difficult to safely and conveniently remove the soil samples. In view of this, this application proposes a hydrogeological exploration sampling device to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a hydrogeological survey and sampling device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydrogeological survey and sampling device, comprising:

[0006] The base plate has a through hole at the top center and lockable casters mounted at each of its four bottom corners.

[0007] The top plate is located above the bottom plate, with two U-shaped handles fixedly connected to its right side, and a first multi-stage electric telescopic rod is embedded and fixed at its bottom.

[0008] The drive box is fixedly installed at the bottom of the extended end of the first multi-stage electric telescopic rod; the first multi-stage electric telescopic rod is used to drive the drive box from the bottom up.

[0009] The vertical guide measuring assembly consists of two sets, which are fixedly connected between the bottom plate and the top plate, and are also fixedly connected to the outside of the drive box; the vertical guide measuring assembly is used to vertically guide the drive box and measure its downward movement distance.

[0010] A rotary drive assembly is mounted on a drive box. A sampling drill barrel with a sealing structure at the top is fixedly connected to the bottom end of the drive assembly. Multiple drill teeth are fixedly connected at equal intervals to the bottom end of the sampling drill barrel. The rotary drive assembly is used to drive the sampling drill barrel to rotate and to drive the sampling drill barrel to move downward when the drive box moves downward, so as to perform rotary downward drilling work.

[0011] The sealing and unsealing drilling assembly is installed inside the sampling drill barrel and drive box; the sealing and unsealing drilling assembly is used to unseal and sample at a fixed depth after descending to the required sampling depth, and to push out the sample after the sampling is lifted.

[0012] A ring-shaped brush is connected inside the through hole and is movably sleeved on the outside of the sampling drill barrel. The ring-shaped brush is used to brush and clean the outside of the sampling drill barrel when it is raised after use, improving the cleaning effect of the upper part that is easily visible.

[0013] Preferably, the annular brush is fixedly connected to the through hole by welding.

[0014] Preferably, the annular brush is detachably connected inside the through hole.

[0015] Preferably, the outer side of the annular brush is in movable contact with the inner wall of the through hole, and a support sleeve is fixedly connected to the inner walls on both sides of the through hole. Threaded grooves are opened on both sides of the top of the annular brush, and a knob-type bolt is threaded into the threaded groove. The support sleeve is movably sleeved on the knob-type bolt, and an elastic rubber ring that is pressed tightly against the top of the corresponding support sleeve is adhered and fixed to the inner wall of the top of the knob-type bolt.

[0016] Preferably, the vertical guide measuring assembly includes a measuring rod fixedly connected between the top plate and the bottom plate, a scale line is provided on the front side of the measuring rod, a vertical guide sleeve is slidably fitted on the outer side of the measuring rod, and the two sides of the drive box are respectively fixedly connected to the outer side of the corresponding vertical guide sleeve.

[0017] Preferably, the rotary drive assembly includes a rotary tube rotatably mounted at the bottom of the drive box, the bottom end of the rotary tube being fixedly connected to the top end of the sampling drill barrel, an external gear ring located inside the drive box being fixedly sleeved on the outer side of the rotary tube, a gear meshing on the left side of the external gear ring, and a drive motor whose output shaft is fixedly connected to the top of the gear being fixedly installed on the top left side of the drive box.

[0018] Preferably, the sealing and unsealing drilling assembly includes a conical drill bit movably sleeved on the bottom of the inner side of the sampling drill barrel, a square rod fixedly connected to the top of the conical drill bit, the top end of the square rod extending into the rotating tube, the sampling drill barrel slidably sleeved on the square rod, and a second multi-stage electric telescopic rod with its extended end rotatably connected to the top end of the square rod is embedded and fixed on the top inner wall of the drive box.

[0019] Preferably, a storage battery is fixedly connected to the top right side of the top plate, and the drive motor, the first multi-stage electric telescopic rod and the second multi-stage electric telescopic rod are all electrically connected to the storage battery through flexible wires. An avoidance hole is provided at the top of the top plate, and the second multi-stage electric telescopic rod and the drive motor are both located in the avoidance hole and do not contact the inner wall of the avoidance hole.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. Through the combination of the set base plate, top plate, drive box, vertical guide measurement component, rotary drive component, and sealing and unsealing drilling component, the sample can be unsealed and removed after reaching the sampling depth, and then pushed out. This facilitates accurate depth sampling, avoids the phenomenon of soil samples from different depths being easily mixed, which affects subsequent testing work, improves sampling accuracy, and avoids the phenomenon of soil samples being tightly stuck and difficult to remove. It is convenient, safe and convenient to discharge soil samples without the need for manual vibration of the sampling drill cylinder, avoiding the phenomenon of it being deformed by knocking, and improving the ease of use.

[0022] 2. The ring-shaped brush can be used to clean the outside of the sampling drill barrel when it is raised after use, which improves the cleaning effect of the upper part that is easily visible and reduces the phenomenon of a lot of soil residue on the upper part affecting the mood of the staff and requiring manual cleaning by the staff.

[0023] 3. Through the combination of the ring brush, support sleeve, threaded groove, knob bolt and elastic rubber ring, the ring brush can be replaced individually when it is severely worn, further improving the flexibility of use.

[0024] This utility model features a series of structures that facilitate unsealing and sampling after reaching the sampling depth, and allow the sample to be pushed out after removal. This enables precise sampling at a fixed depth, avoids the mixing of soil samples from different depths which can affect subsequent testing, improves sampling accuracy, and prevents soil samples from becoming stuck and difficult to remove. It also facilitates safe and convenient soil sample removal, enhancing ease of use. Furthermore, it allows for brushing and cleaning of the outer side of the sampling drill after use, reducing the impact of excessive residual soil on personnel and minimizing the need for manual cleaning. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a hydrogeological survey and sampling device according to Embodiment 1 of this utility model;

[0026] Figure 2 This is a schematic diagram of the main cross-sectional structure of a hydrogeological survey and sampling device according to Embodiment 1 of this utility model;

[0027] Figure 3 This is a schematic diagram of the main cross-sectional structure of a hydrogeological survey and sampling device according to Embodiment 2 of this utility model;

[0028] Figure 4 for Figure 3 A magnified structural diagram of part A in the diagram.

[0029] In the diagram: 1. Base plate; 101. Measuring rod; 102. Vertical guide sleeve; 2. Top plate; 201. First multi-stage electric telescopic rod; 3. Drive box; 301. Rotary tube; 302. Sampling drill barrel; 303. Drill teeth; 304. External gear ring; 305. Gear; 306. Drive motor; 4. Second multi-stage electric telescopic rod; 401. Square rod; 402. Conical drill bit; 5. Annular brush; 501. Support sleeve; 502. Knob bolt. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] like Figures 1 to 2 As shown in this embodiment, a hydrogeological survey and sampling device includes:

[0033] The base plate 1 has a through hole at the center of its top and lockable casters mounted at each of its four bottom corners.

[0034] Top plate 2 is set above bottom plate 1, and two spiral handles are fixedly connected to the right side. The bottom of the top plate is embedded and fixedly fitted with a first multi-stage electric telescopic rod 201.

[0035] The drive box 3 is fixedly installed at the bottom of the extended end of the first multi-stage electric telescopic rod 201; the first multi-stage electric telescopic rod 201 is used to drive the drive box 3 up and down.

[0036] The vertical guide measuring assembly consists of two sets, which are fixedly connected between the base plate 1 and the top plate 2, and are also fixedly connected to the outside of the drive box 3; the vertical guide measuring assembly is used to vertically guide the drive box 3 and measure its downward movement distance.

[0037] The rotary drive assembly is installed on the drive box 3. The bottom end of the drive assembly is fixedly connected to a sampling drill barrel 302 with a top sealing structure. Multiple drill teeth 303 are fixedly connected at equal intervals to the bottom end of the sampling drill barrel 302. The rotary drive assembly is used to drive the sampling drill barrel 302 to rotate and to drive the sampling drill barrel 302 to move downward when the drive box 3 moves downward, so as to carry out rotary downward drilling work.

[0038] The sealing and unsealing drilling assembly is installed inside the sampling drill barrel 302 and the drive box 3; the sealing and unsealing drilling assembly is used to unseal and sample at a fixed depth after descending to the required sampling depth, and to push out the sample after the sampling is lifted.

[0039] An annular brush 5 is connected inside the through hole and is movably sleeved on the outside of the sampling drill cylinder 302. The annular brush 5 is used to brush and clean the outside of the sampling drill cylinder 302 when it is raised after use, thereby improving the cleaning effect of the upper part of the cylinder that is easily visible.

[0040] Specifically, the annular brush 5 is fixedly connected to the through hole by welding.

[0041] It should be noted that the annular brush 5 consists of a metal annular fixing part and brush bristles fixed inside it. The annular fixing part of the annular brush 5 is welded and fixed inside the round through hole. The brushing and cleaning of the outside of the sampling drill barrel 302 by the brush bristles is a mature existing technology.

[0042] Furthermore, the vertical guide measurement assembly includes a measuring rod 101 fixedly connected between the top plate 2 and the bottom plate 1. The front side of the measuring rod 101 has a scale line, and a vertical guide sleeve 102 is slidably sleeved on the outer side of the measuring rod 101. The two sides of the drive box 3 are respectively fixedly connected to the outer side of the corresponding vertical guide sleeve 102. In this embodiment, the measuring rod 101, the scale line and the vertical guide sleeve 102 cooperate to drive the two vertical guide sleeves 102 to slide downward on the corresponding measuring rod 101 when the drive box 3 moves down, so as to carry out vertical guidance work, thereby improving the stability of the downward movement. By using the vertical guide sleeve 102 to align with different positions of the corresponding scale line when it moves down, the personnel can accurately judge the downward movement distance. By observing the scale line when the sampling drill tube 302 contacts the hydrogeological ground and the scale line aligned after drilling, the personnel can accurately judge the drilling depth, which facilitates accurate depth drilling work.

[0043] Furthermore, the rotary drive assembly includes a rotary tube 301 rotatably mounted at the bottom of the drive box 3. The bottom of the drive box 3 has a circular through hole, and two bearings are fixedly fitted inside the circular through hole. The inner rings of the bearings are fixedly fitted to the outer side of the rotary tube 301, which achieves the effect of rotating the rotary tube 301. The bottom end of the rotary tube 301 is fixedly connected to the top end of the sampling drill barrel 302. An external gear ring 304 located inside the drive box 3 is fixedly fitted on the outer side of the rotary tube 301. A gear 305 meshes with the left side of the external gear ring 304. A drive motor 306 with an output shaft fixedly connected to the top of the gear 305 is fixedly installed on the top left side of the drive box 3. In this embodiment, the rotary tube 301, the external gear ring 304, the gear 305 and the drive motor 306 cooperate to drive the gear 305 to rotate. The gear 305 drives the rotary tube 301 to rotate through the external gear ring 304 meshing with it. The rotation of the rotary tube 301 drives the sampling drill barrel 302 to rotate.

[0044] It should be noted that the drive motor 306 is a motor with a holding brake function, and the specific model can be selected according to the actual application.

[0045] Furthermore, the sealing and unsealing drilling assembly includes a conical drill bit 402 movably sleeved on the bottom of the inner side of the sampling drill barrel 302. A square rod 401 is fixedly connected to the top of the conical drill bit 402. The top of the square rod 401 extends into the rotating tube 301. The sampling drill barrel 302 is slidably sleeved on the square rod 401. The top of the sampling drill barrel 302 is provided with a square guide hole that slides with the outer side of the square rod 401, which serves to guide the square rod 401 vertically. The square part has the characteristic of being able to lock at the corners, which makes it easy to drive the sampling drill barrel 302 to rotate as a whole through the corners of the square rod 401. A second multi-stage electric telescopic rod 4 with its extended end rotatably connected to the top of the square rod 401 is embedded and fixed on the top inner wall of the drive box 3.

[0046] In this embodiment, the conical drill bit 402, the square rod 401, and the second multi-stage electric telescopic rod 4 work together. When the sampling drill cylinder 302 rotates, the square rod 401 drives the conical drill bit 402 to rotate as a whole, performing drilling work. After drilling to the required sampling depth, the operator reverses the operation and activates the second multi-stage electric telescopic rod 4 to drive the square rod 401 to move upward. The square rod 401 drives the conical drill bit 402 to retract upward into the upper inner part of the sampling drill cylinder 302, releasing the seal on the bottom of the sampling drill cylinder 302. At this time, as the sampling drill cylinder 302 continues to drill downward, the hydrogeological soil is gradually squeezed and compacted. After sampling, the sampling drill tube 302 is moved upwards and then the second multi-stage electric telescopic rod 4 is activated in the forward direction. This causes the conical drill bit 402 to move downwards via the square rod 401. The conical drill bit 402 pushes the soil sample out downwards, achieving the effect of unsealing the sample after reaching the sampling depth and pushing the sample out after removal. By unsealing the sample after reaching the sampling depth, the phenomenon of soil samples from different depths being easily mixed and affecting subsequent testing work is avoided, thus improving sampling accuracy. By pushing the soil sample out after removal, the phenomenon of soil sample being tightly stuck and difficult to remove is avoided, thus improving ease of use.

[0047] Furthermore, a storage battery is fixedly connected to the top right side of the top plate 2. The drive motor 306, the first multi-stage electric telescopic rod 201, and the second multi-stage electric telescopic rod 4 are all electrically connected to the storage battery through flexible wires. A clearance hole is provided at the top of the top plate 2. The second multi-stage electric telescopic rod 4 and the drive motor 306 are both located in the clearance hole and do not contact the inner wall of the clearance hole. The storage battery is used to supply power to the drive motor 306, the first multi-stage electric telescopic rod 201, and the second multi-stage electric telescopic rod 4.

[0048] This embodiment facilitates unsealing and sampling after reaching the sampling depth, and pushes out the sample after removal, which is convenient for accurate depth sampling, avoids the phenomenon of soil samples from different depths being easily mixed and affecting subsequent testing work, improves sampling accuracy, and avoids the phenomenon of soil samples being tightly stuck and difficult to remove. It is convenient, safe and convenient to discharge soil samples, improves ease of use, and can brush and clean the outside of the sampling drill 302 when it is raised after use, reducing the phenomenon of a lot of residual soil on the top affecting the mood of personnel and requiring additional manual cleaning.

[0049] The usage method of this embodiment is as follows: When using the hydrogeological survey and sampling device, after moving the device to the location where hydrogeological sampling is required, lock the locking casters, start the first multi-stage electric telescopic rod 201 in the forward direction and turn on the drive motor 306. Personnel hold the two loop handles for auxiliary stability. When the drive motor 306 starts, the drive gear 305 rotates. The gear 305 drives the rotating tube 301 to rotate through the meshing external gear ring 304. The rotating tube 301 drives the sampling drill cylinder 302 to rotate. The sampling drill cylinder 302 is driven to rotate as a whole through the outer corner of the square rod 401. The square rod 401 drives the conical drill bit 402 to rotate. When the first multi-stage electric telescopic rod 201 rotates, it drives the drive box 3 to move downward. The drive box 3 drives the two Each vertical guide sleeve 102 slides downward on its corresponding measuring rod 101 to provide vertical guidance and improve downward stability. The drive box 3 also drives the sampling drill cylinder 302 downward through the rotary tube 301. At the same time, the drive box 3 also drives the conical drill bit 402 downward through the second multi-stage electric telescopic rod 4 and the square rod 401. The sampling drill cylinder 302 and the conical drill bit 402 rotate and move downward to perform drilling. When the vertical guide sleeve 102 moves downward, it aligns with the scale lines on the corresponding measuring rod 101 at different positions, allowing personnel to accurately judge the downward distance. By observing the scale lines when the sampling drill cylinder 302 contacts the hydrogeological ground and the scale lines after drilling, personnel can accurately judge the drilling depth, which is convenient for precise depth drilling.

[0050] After drilling to the required sampling depth, personnel reverse-start the second multi-stage electric telescopic rod 4, which drives the square rod 401 upward. The square rod 401 drives the conical drill bit 402 upward into the upper inner part of the sampling drill tube 302, releasing the seal on the bottom of the sampling drill tube 302. At this time, as the sampling drill tube 302 continues to drill downward, the hydrogeological soil is gradually squeezed and compacted into the sampling drill tube 302, achieving the effect of unsealing and sampling after reaching the sampling depth. Then, the first multi-stage electric telescopic rod 201 reverse-starts, which drives the drive box 3 to move upward and reset, thereby driving the sampling drill tube 302 to rise and reset. After moving out, personnel forward-start the second multi-stage electric telescopic rod 4, which drives the conical drill bit 402 downward through the square rod 401. The shaped drill bit 402 pushes the soil sample downwards, achieving the effect of removing the sample after removal. By reaching the sampling depth before unsealing and removing the sample, it is convenient to accurately determine the sampling depth, avoid the phenomenon of soil samples from different depths being mixed, which affects subsequent testing work, improves sampling accuracy, and avoids the phenomenon of soil samples being tightly stuck and difficult to remove. It is convenient, safe and convenient to remove soil samples without the need for manual knocking and vibration of the sampling drill cylinder 302, avoiding the phenomenon of it being deformed by knocking, and improving the ease of use. The annular brush 5 can brush and clean the outside of the sampling drill cylinder 302 when it is raised after use, improving the cleaning effect of the upper part that is easily visible, reducing the phenomenon of a lot of soil residue on the top affecting the mood of personnel and requiring additional manual cleaning.

[0051] Example 2

[0052] Reference Figures 3 to 4 This embodiment differs from Embodiment 1 in that:

[0053] The annular brush 5 is detachably connected to the through hole. The outer side of the annular brush 5 is in contact with the inner wall of the through hole. Support sleeves 501 are fixedly connected to the inner walls on both sides of the through hole. Threaded grooves are opened on both sides of the top of the annular brush 5. A knob bolt 502 is screwed into the threaded groove. The support sleeve 501 is movably fitted on the knob bolt 502. An elastic rubber ring is glued and fixed to the inner wall of the top of the knob bolt 502, which is in tight contact with the top of the corresponding support sleeve 501.

[0054] This embodiment enables the replacement of the annular brush 5 separately when it becomes severely worn, further improving the flexibility of use.

[0055] The method of use in this embodiment is as follows: The difference from the first embodiment is that it also has the following functions: In addition, by using the support sleeve 501, threaded groove, knob bolt 502 and elastic rubber ring to achieve the threaded installation and fixation of the annular brush 5, it is convenient for personnel to untie the fixation when the knob bolt 502 is reversed in the future, so as to facilitate the replacement of the annular brush 5 when it is severely worn, and further improve the flexibility of use.

[0056] It should be noted that the threaded groove is formed on the top of the annular fixing part of the annular brush 5, and the annular fixing part of the annular brush 5 is in contact with the side wall of the through hole.

[0057] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydrogeological survey and sampling device, comprising a base plate (1), characterized in that: include: The base plate (1) has a through hole at the center of its top and lockable casters at the four corners of its bottom. The top plate (2) is set above the bottom plate (1), and two spiral handles are fixedly connected to the right side. The bottom of the top plate is fitted with a first multi-stage electric telescopic rod (201). The drive box (3) is fixedly installed at the bottom of the extended end of the first multi-stage electric telescopic rod (201); The vertical guide measuring assembly consists of two sets, which are fixedly connected between the base plate (1) and the top plate (2) and fixedly connected to the outside of the drive box (3); The rotary drive assembly is installed on the drive box (3). The bottom end of the drive assembly is fixedly connected to a sampling drill barrel (302) with a top sealing structure. Multiple drill teeth (303) are fixedly connected at equal intervals at the bottom end of the sampling drill barrel (302). The sealing and unsealing drilling assembly is installed inside the sampling drill barrel (302) and the drive box (3); The annular brush (5) is connected inside the through hole and is movably sleeved on the outside of the sampling drill tube (302).

2. The hydrogeological survey and sampling device according to claim 1, characterized in that: The annular brush (5) is fixedly connected to the through hole by welding.

3. The hydrogeological survey and sampling device according to claim 1, characterized in that: The annular brush (5) is detachably connected inside the through hole.

4. The hydrogeological survey and sampling device according to claim 3, characterized in that: The outer side of the annular brush (5) is in contact with the inner wall of the through hole. Support sleeves (501) are fixedly connected to the inner walls on both sides of the through hole. Threaded grooves are opened on both sides of the top of the annular brush (5). A knob bolt (502) is threaded into the threaded groove. The support sleeve (501) is movably sleeved on the knob bolt (502). An elastic rubber ring is bonded and fixed to the inner wall of the top of the knob bolt (502) and is pressed tightly against the top of the corresponding support sleeve (501).

5. The hydrogeological survey and sampling device according to claim 1, characterized in that: The vertical guide measuring assembly includes a measuring rod (101) fixedly connected between the top plate (2) and the bottom plate (1). The measuring rod (101) has a scale line on its front side, and a vertical guide sleeve (102) is slidably sleeved on the outside of the measuring rod (101). The two sides of the drive box (3) are fixedly connected to the outside of the corresponding vertical guide sleeve (102).

6. The hydrogeological survey and sampling device according to claim 1, characterized in that: The rotary drive assembly includes a rotary tube (301) that is rotatably embedded in the bottom of the drive box (3). The bottom end of the rotary tube (301) is fixedly connected to the top end of the sampling drill barrel (302). An external gear ring (304) located inside the drive box (3) is fixedly sleeved on the outside of the rotary tube (301). A gear (305) meshes on the left side of the external gear ring (304). A drive motor (306) whose output shaft is fixedly connected to the top of the gear (305) is fixedly installed on the top left side of the drive box (3).

7. A hydrogeological survey and sampling device according to claim 6, characterized in that: The sealing and unsealing drilling assembly includes a conical drill bit (402) movably fitted inside the bottom of the sampling drill barrel (302). A square rod (401) is fixedly connected to the top of the conical drill bit (402). The top end of the square rod (401) extends into the rotary tube (301). The sampling drill barrel (302) is slidably fitted on the square rod (401). A second multi-stage electric telescopic rod (4) with its extended end rotatably connected to the top end of the square rod (401) is embedded and fixed on the top inner wall of the drive box (3).

8. A hydrogeological survey and sampling device according to claim 7, characterized in that: A storage battery is fixedly connected to the top right side of the top plate (2). The drive motor (306), the first multi-stage electric telescopic rod (201) and the second multi-stage electric telescopic rod (4) are all electrically connected to the storage battery through flexible wires. An avoidance hole is provided on the top of the top plate (2). The second multi-stage electric telescopic rod (4) and the drive motor (306) are located in the avoidance hole and do not contact the inner wall of the avoidance hole.

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