Sampling drill rig for survey and survey sampling method

Abstract

The present application relates to a sampling drill for exploration and an exploration sampling method, which includes a geological drill and a collection component; the geological drill includes a sampling drill bit; the collection component includes a sliding seat, a sleeve, a sliding plate, a flexible bag and a limiting ring, the outer wall of the sleeve is provided with a plurality of connecting grooves connected to its inner cavity, the sliding plate is provided with a plurality of connecting rods, the connecting rods pass through the connecting grooves and are connected to the limiting ring, the bottom of the flexible bag is placed on the sliding plate, the upper end of the flexible bag is turned outward and sleeved on the connecting ring, and the flexible bag can be sleeved on the lower end of the sampling drill bit. After the sampling drill bit completes sampling, the flexible bag is sleeved on the sampling drill bit, and then the sampling drill bit is struck to make the sample inside gradually fall into the flexible bag. During the process of falling into the flexible bag, the flexible bag also gradually descends. After all the samples fall into the flexible bag, the flexible bag is removed. The sample is not easily broken during the sample feeding process.

Description

Technical Field

[0001] The present application relates to the technical field of exploration methods, and in particular to a sampling drill rig for exploration and an exploration sampling method. Background Art

[0002] At present, when conducting construction or prospecting, it is usually necessary to drill and sample the soil layer at the location. After sampling the soil and rocks, they are collected and discharged in order, and then the sampled samples are tested and analyzed to obtain the specific geological conditions of the sampling site.

[0003] When the sampling drill is used to extract the sample, it is also necessary to remove the sample from the sampling drill. The current common practice is to place an open container under the sampling drill and then strike the sampling drill, causing the sample inside the sampling drill to vibrate and fall from the sampling drill into the container. However, when the soil quality of the sampling location is relatively unique, such as when surveying a soil layer with a loose geological structure and weak cohesion between particles, the sample will break when it falls from the sampling drill, making it difficult to splice it later. This will cause the composition of each part of the sample to differ from the distribution of the original materials in the soil layer, thus affecting the test results.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above problems. Summary of the Invention

[0005] In order to prevent samples from being easily broken when taken out from a sampling drill bit, the present application provides a sampling drill rig for surveying and a survey sampling method.

[0006] This application provides a sampling drill for exploration, which adopts the following technical solutions:

[0007] A sampling drill for exploration and an exploration sampling method, comprising a geological drill and a collection component for collecting samples;

[0008] The geological drilling rig includes a sampling drill bit;

[0009] The collection assembly includes a sliding seat horizontally slidingly arranged on the geological drilling rig, a sleeve fixed on the sliding seat, a sliding plate slidingly arranged in the sleeve, a flexible bag for wrapping the sample and a limiting ring for limiting the opening position of the flexible bag. The outer wall of the sleeve is provided with a plurality of connecting grooves connected to its inner cavity, and a plurality of connecting rods are provided on the sliding plate. The connecting rods pass through the connecting grooves and are connected to the limiting ring. The bottom of the flexible bag is placed on the sliding plate, and the upper end of the flexible bag is flipped outward and sleeved on the connecting ring. The flexible bag can be sleeved on the lower end of the sampling drill bit.

[0010] By adopting the above technical solution, after the sampling drill bit completes sampling, the sleeve is moved to the bottom of the sampling drill bit, and the flexible bag is placed on the sampling drill bit. Then, the sampling drill bit is struck to make the sample inside gradually fall into the flexible bag. In the process of falling into the flexible bag, the flexible bag also gradually drops. After all the samples fall into the flexible bag, the flexible bag sinks into the sleeve. Then, the bag mouth is tightened and the sliding plate is moved upward to push the flexible bag out of the sleeve. Then, the flexible bag is taken away. During the sample unloading process, the sample is not easily broken, so that subsequent detection is not easily affected.

[0011] Optionally, a sliding elastic member is provided below the sliding plate to push the sliding plate to move upward.

[0012] By adopting the above technical solution, when the number of samples in the flexible bag gradually increases, the sliding elastic member gradually contracts and automatically moves downward.

[0013] Optional: A clamping assembly for limiting the lower end of the flexible bag is provided on the sliding plate, and the clamping assembly includes two clamping blocks slidingly provided on the sliding plate, a clamping elastic member for automatically separating the two clamping blocks, and a limiting member for keeping the two clamping blocks in a clamped state. An extension strip is provided at the lower end of the flexible bag, and the two clamping blocks approach each other and clamp the extension strip.

[0014] By adopting the above technical solution, when the upper end of the flexible bag is placed on the limit ring and the sliding plate is moved downward, the clamping assembly can be used to keep the lower end of the flexible bag connected to the sliding plate, so that the overall shape of the flexible bag is not easily affected, thereby facilitating the subsequent placement of the flexible bag on the sampling drill bit.

[0015] Optional: The limiting parts are respectively arranged on both sides of the sliding direction of the clamping block, and the limiting parts include a connecting block slidingly arranged in the sliding plate, two limiting blocks arranged on the connecting block and a limiting elastic part that pushes the connecting block to move toward the clamping block. The sliding direction of the connecting block is perpendicular to the sliding direction of the clamping block. The side walls of the clamping block close to the connecting block are provided with limiting grooves, and the limiting blocks on the same connecting block are respectively embedded in the limiting grooves of the two clamping blocks.

[0016] By adopting the above technical solution, after the two clamping blocks are brought close to each other, the limit block can be inserted into the limit groove, so that the two clamping blocks remain in a clamped state, so that the clamping blocks can stably limit the position of the extension strip, thereby limiting the lower end position of the flexible bag.

[0017] Optional: Two reset rods are provided at the bottom of the sleeve, and the reset rods push a limit block to move respectively. A guide slope is provided at the upper end of the reset rod, and the end of the guide slope away from the abutment position of the clamping block is inclined downward. The upper end of the reset rod can be passed through the sliding plate, and the guide slope can abut against the connecting block and push the connecting block away from the clamping block.

[0018] By adopting the above technical solution, the sliding plate is moved downward so that the upper end of the reset rod contacts the connecting block, thereby causing the connecting block to move in a direction away from the clamping block, so that the position of the clamping block is no longer limited and the two clamping blocks are moved away from each other, thereby achieving automatic separation of the clamping block and the flexible bag.

[0019] Optional: A positioning assembly that limits the upward movement of the sliding plate is also provided in the sleeve, and the positioning assembly includes a positioning block that is slidably provided on the sleeve and a positioning elastic member that pushes the positioning block to move toward the sliding plate. A positioning groove is coaxially provided on the outer wall of the sliding plate, and the positioning groove passes through the upper end of the sliding plate. The positioning block is provided with an abutment block near the end face of the sliding plate, and the lower end of the abutment block can abut against the lower end face of the positioning groove. The upper end of the abutment block is provided with a pushing slope, and the pushing slope is inclined downward near one end of the sliding plate, and the pushing slope can abut against the sliding plate.

[0020] By adopting the above technical solution, after the sample enters the flexible bag, the position of the sliding plate is defined by moving the sliding plate to the bottom of the positioning block, and then the opening of the flexible bag is tightened. During the process of tightening the bag opening of the flexible bag, the position of the flexible bag can still be defined, making the tightening process of the bag opening of the flexible bag more convenient.

[0021] Optional: One end of the connecting block away from the clamping block extends out of the sliding plate, and a reset slope is provided on the end surface of the connecting block extending out of the sliding plate, the upper end of the reset slope is inclined toward the direction of the clamping block, and the reset slope can simultaneously abut against the positioning block and the abutting block to push the positioning block away from the sliding plate.

[0022] By adopting the above technical solution, after the clamping block no longer clamps the extension bar, the reset slope on the connecting block can abut against the positioning block and the abutment block, thereby driving the positioning block to move away from the clamping block, so that the sliding plate can move to the top of the positioning assembly.

[0023] A survey sampling method comprises the following steps:

[0024] S1. Insert the extension strip of the flexible bag between the two clamping blocks, pinch the two clamping blocks and bring them close to each other so that the limit block is inserted into the limit groove to limit the position of the two clamping blocks, so that the clamping blocks clamp the extension strip;

[0025] S2. Turn the opening of the flexible bag outward and place it on the limiting ring;

[0026] S3, after the drilling rig completes sampling and the sampling drill bit retracts upward, press the limit ring downward so that the upper end of the limit ring is lower than the lower end surface of the sampling drill bit, and then move the sleeve to the bottom of the sampling drill bit, so that the limit ring rises and is placed outside the sampling rotation;

[0027] S4. Tap the sampling drill bit to move the sample in the sampling drill bit downward into the flexible bag, and gradually push the limit ring downward. When all the samples in the sampling drill bit fall into the flexible bag, press the fiber ring downward to move the sliding plate below the positioning block;

[0028] S5. Move the sliding seat away from the sampling drill bit, remove the opening of the flexible bag from the limiting ring and tie it tightly;

[0029] S6. Press the limit ring downward until the reset rod is inserted into the sliding plate to push the limit block out of the limit groove, gradually reduce the downward pressure on the limit ring, and the sliding plate moves upward until it stops. Remove the flexible bag from the sliding plate and store it.

[0030] By adopting the above technical solution, when the sample comes out of the sampling drill bit, it can be received by the flexible bag, so that the sample is not easily broken, and the subsequent detection process of the sample is not easily affected.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. After the sampling drill bit completes sampling, the sleeve is moved to the bottom of the sampling drill bit, and the flexible bag is placed on the sampling drill bit. Then, the sampling drill bit is struck to make the sample inside gradually fall into the flexible bag. In the process of falling into the flexible bag, the flexible bag also gradually drops. After all the samples fall into the flexible bag, the flexible bag is completely sunk into the sleeve. Then, the bag mouth is tightened and the sliding plate is moved upward to push the flexible bag out of the sleeve. Then, the flexible bag is taken away. During the sample feeding process, the sample is not easily broken, so that the subsequent detection is not easily affected.

[0033] 2. When the upper end of the flexible bag is placed on the limiting ring and the sliding plate is moved downward, the clamping assembly can be used to keep the lower end of the flexible bag connected to the sliding plate, so that the overall shape of the flexible bag is not easily affected, thereby facilitating the subsequent placement of the flexible bag on the sampling drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic structural diagram of an embodiment of the present application;

[0035] Figure 2 This is a schematic diagram showing the structure of a collecting component according to an embodiment of the present application;

[0036] Figure 3 for Figure 2 A magnified view of part A;

[0037] Figure 4 This is a schematic diagram showing the structure of the clamping block according to an embodiment of the present application;

[0038] Figure 5 This is a schematic diagram for illustrating the coordination structure of the connecting block and the positioning block according to an embodiment of the present application;

[0039] Figure 6 for Figure 4 Enlarged view of part B.

[0040] In the figure, 1. geological drilling rig; 11. sampling drill bit; 12. mounting frame; 2. collecting assembly; 21. sliding seat; 22. sleeve; 221. connecting groove; 23. sliding plate; 231. positioning groove; 24. flexible bag; 241. extension strip; 25. limiting ring; 26. connecting rod; 27. sliding elastic member; 28. cover plate; 281. mounting groove; 29. ​​reset rod; 291. guide slope; 3. clamping assembly; 31. clamping block; 311. pushing groove; 312. limiting groove; 32. clamping elastic member; 33. limiting member; 331. connecting block; 3311. reset slope; 332. limiting block; 333. limiting elastic member; 4. positioning assembly; 41. positioning block; 42. positioning elastic member; 43. abutting block; 431. pushing slope; 44. abutting sleeve. DETAILED DESCRIPTION

[0041] The present application is further described in detail below with reference to the accompanying drawings.

[0042] The present application discloses a sampling drill for surveying, such as Figure 1 and Figure 2As shown, the geological drill rig 1 includes a collection assembly 2 mounted on the geological drill rig 1 for collecting samples. The geological drill rig 1 includes a sampling drill bit 11 for drilling. The sampling drill bit 11 is inserted into soil or rock to collect the rock or soil in the sampling drill bit 11. The sampling drill bit 11 then retracts to collect the sample in the sampling drill bit 11. The collection assembly 2 includes a sliding seat 21 slidably mounted on the geological drill rig, a sleeve 22 fixed to the sliding seat 21, a sliding plate 23 slidably mounted within the sleeve 22, a flexible bag 24 for wrapping the sample, and a limiting ring 25 for limiting the opening position of the flexible bag 24. A mounting bracket 12 is mounted on the body of the geological drill rig. The mounting bracket 12 is mounted outside the sampling drill bit 11, and the sampling drill bit 11 passes through the mounting bracket 12 to collect samples. The sliding seat 21 is slidably mounted on the mounting frame 12 via guide rails. It is located on the side of the sampling drill bit 11 away from the machine body. The sliding seat 21 can be moved below the raised sampling drill bit 11, or moved away from the sampling drill bit 11. The sleeve 22 is open at the top, with an inner diameter larger than that of the sampling drill bit 11. The sliding plate 23 slides vertically within the sampling drill bit 11, with the outer wall of the sliding plate 23 maintaining contact with the inner wall of the sleeve 22. Several connecting grooves 221 are circumferentially defined on the outer wall of the sleeve 22, connecting to its inner cavity. The connecting grooves 221 are arranged parallel to the axis of the sleeve 22. Several connecting rods 26 are provided on the outer wall of the sliding plate 23. These rods 26 pass through the connecting grooves 221 and are secured to the retaining ring 25. The connecting rods 26 are L-shaped, with the horizontal portion of the connecting rod 26 passing through and slidingly engaging the connecting grooves 221. The upper end of the vertical portion of the connecting rod 26 is secured to the retaining ring 25. The inner diameter of the retaining ring 25 is larger than the outer diameter of the sampling drill bit 11, allowing the retaining ring 25 to fit over the sampling drill bit 11 with a gap between them. The flexible bag 24 can be placed in the sleeve 22, and the lower end of the flexible bag 24 abuts against the upper end of the sliding plate 23. The opening of the flexible bag 24 is flipped outward and sleeved on the limiting ring 25. Therefore, after the sliding plate 23 and the limiting ring 25 move upward, the flexible bag 24 can be directly sleeved on the outside of the sampling drill bit 11, and then the sampling drill bit 11 is knocked to make the sample in the sampling drill bit 11 move downward and fall into the flexible bag 24. In the process of the sample falling into the flexible bag 24, the flexible bag 24 gradually moves downward, so that the sample can always be supported by the flexible bag 24, so that the sample is not easily broken.

[0043] The sleeve 22 is also provided with a sliding elastic member 27 for pushing the sliding plate 23 upward. In this embodiment, the sliding elastic member 27 is a spring. One end of the sliding elastic member 27 abuts against the lower end of the sliding plate 23, and the other end of the sliding elastic member 27 abuts against the bottom surface of the inner cavity of the sleeve 22. Therefore, when the flexible bag 24 needs to be placed on the limiting ring 25, the sliding plate 23 can be pushed close to the upper end opening of the sleeve 22 by the sliding elastic member 27, so that the lower end of the flexible bag 24 can better abut against the sliding plate 23.

[0044] like Figure 3 and Figure 4As shown, when the flexible bag 24 is placed on the limiting ring 25, the lower end of the flexible bag 24 is difficult to be stably placed on the sliding plate 23. Therefore, the sliding plate 23 is also provided with a clamping assembly 3 to limit the lower end of the flexible bag 24. The clamping assembly 3 includes two clamping blocks 31 that are slidably disposed on the sliding plate 23, a clamping elastic member 32 that automatically separates the two clamping blocks 31, and a limiting member 33 that maintains the two clamping blocks 31 in a clamped state. In this embodiment, the clamping elastic member 32 is a spring. The clamping elastic member 32 is disposed between the two clamping blocks 31 to push the two clamping blocks 31 away from each other. The sliding plate 23 is open at the top. A cover plate 28 is mounted on the top end of the sliding plate 23 to seal the opening. A mounting slot 281 extends through the cover plate 28. Two clamping blocks 31 are positioned within the sliding plate 23 and move radially along the sliding plate 23. The upper ends of the two clamping blocks 31 abut against the lower end of the cover plate 28, constantly sealing the mounting slot 281. A push slot 311 is positioned at the top end of each clamping block 31. An extension bar 241 is positioned at the lower end of the flexible bag 24. Applying force to the push slot 311 drives the two clamping blocks 31 toward each other, clamping the extension bar 241. Two stoppers 33 are positioned on either side of the clamping blocks 31. These stoppers 33 include a connecting block 331 that slides within the sliding plate 23, two stoppers 332 mounted on the connecting block 331, and a stopper elastic member 333 that pushes the connecting block 331 toward the clamping block 31. The sliding direction of the connecting block 331 is perpendicular to the sliding direction of the clamping block 31. The limit block 332 is provided on the end surface of the connecting block 331 near the clamping block 31. The end surface of the clamping block 31 near the limit block 332 is provided with a limit slot 312. The two limit blocks 332 on the same connecting block 331 can be respectively inserted into the limit slots 312 on the mutually abutting clamping block 31. The limit blocks 332 are also provided with chamfers on the end surfaces near the clamping block 31. After the two clamping blocks 31 clamp the extension bar 241, the limit blocks 332 are inserted into the limit slots 312, thereby limiting the relative position of the two clamping blocks 31. The lower end of the connecting block 331 is also provided with a transmission block. In this embodiment, the limit elastic member 333 is a spring. One end of the limit elastic member 333 abuts the side wall of the transmission block away from the clamping block 31, and the other end abuts the inner wall of the sliding plate 23.

[0045] like Figure 5As shown, to allow the clamping blocks 31 to move away from each other when the flexible bag 24 is removed, two reset rods 29 are provided at the bottom of the sleeve 22. One reset rod 29 is capable of pushing a connecting block 331 to move. The upper end of the reset rod 29 is provided with a guide slope 291, which slopes downward near the end of the transmission block to which it is connected. The upper end of the reset rod 29 extends into the sliding plate 23, and the guide slope 291 abuts the end of the transmission block near the clamping block 31, thereby pushing the limit block 332 out of the limit slot 312.

[0046] like Figure 6 As shown, since the opening of the flexible bag 24 needs to be tied tightly before removing it from the sleeve 22, if the sliding plate 23 moves directly upward, the overall position of the flexible bag 24 cannot be well defined, making it difficult to tie the opening tightly. Therefore, a positioning assembly 4 is also provided within the sleeve 22 to limit the upward movement of the sliding plate 23. The positioning assemblies 4 are respectively arranged on both sides of the sliding plate 23 and are located near the limiter 33. The positioning assembly 4 includes a positioning block 41 that slides within the sleeve 22 and a positioning elastic member 42 that pushes the positioning block 41 toward the sliding plate 23. The two positioning blocks 41 are circumferentially arranged on the sleeve 22, and the positioning blocks 41 are inserted into the sleeve 22 and slide horizontally. An abutment block 43 is provided on the end surface of the positioning block 41 near the sliding plate 23. A positioning slot 231 is coaxially formed on the upper end of the sliding plate 23. The positioning slot 231 penetrates the side wall of the positioning block 41, allowing the positioning block 41 to abut against the side wall of the sliding plate 23, and the lower end of the abutment block 43 to abut against the bottom surface of the positioning slot 231. A push slope 431 is also provided on the upper end surface of the abutment block 43. The push slope 431 is inclined downward at the end near the sliding plate 23. Therefore, when the sliding plate 23 moves downward, the sliding plate 23 can abut against the push slope 431, thereby pushing the positioning block 41 away from the sliding plate 23, allowing the sliding plate 23 to move below the positioning block 41. In this embodiment, the positioning elastic member 42 is a spring. An anti-slip block is provided at the end of the positioning block 41 away from the sliding plate 23. One end of the positioning elastic member 42 abuts against the anti-slip block. An abutting sleeve 44 is also threadedly connected to the outer wall of the sleeve 22. The abutting sleeve 44 is sleeved on the outside of the positioning block 41, and the other end of the positioning elastic member 42 abuts against the inner wall of the abutting sleeve 44.

[0047] like Figure 5As shown, the end of the connecting block 331 away from the clamping block 31 can extend out of the sliding plate 23. When the limit block 332 is inserted into the limit slot 312, the end of the connecting block 331 away from the clamping block 31 is located within the sliding plate. The end of the connecting block 331 away from the clamping block 31 is provided with a reset slope 3311, the upper end of which is inclined toward the clamping block 31. When the connecting block 331 extends out of the sliding plate 23, the reset slope 3311 of the connecting block 331 is located outside the sliding plate 23 and the limit block 332 abuts against the side wall of the clamping block 31, so that the position of the connecting block 331 relative to the sliding plate 23 is limited. Then the sliding plate 23 moves upward, and the reset slope 3311 abuts against the bottom of the positioning block 41 abutting against the sliding plate 23, thereby pushing the positioning block 41 away from the sliding plate 23. Then the reset slope 3311 continues to contact the abutting block 43 to push the abutting block 43 away from the sliding plate 23, so that the sliding plate 23 can move to the top of the positioning assembly 4.

[0048] The implementation principle of this embodiment is as follows: insert the extension strip 241 at the lower end of the flexible bag 24 between the two clamping blocks 31, then pinch the clamping blocks 31 to bring the two together to clamp the extension strip 241, then align the limit block 332 with the limit groove 312 so that the limit block 332 is inserted into the limit groove 312 under the push of the spring to complete the limit of the clamping block 31, turn the upper end of the flexible bag 24 outward and put it on the limit ring 25, press the sliding plate 23 downward to make the upper end of the limit ring 25 lower than the sampling drill bit 11 and higher than the positioning component 4, then move the sleeve 22 to the bottom of the sampling drill bit 11, and move the fiber ring upward to It is sleeved on the outside of the sampling drill bit 11, and the sampling drill bit 11 is knocked to make the sample fall into the flexible bag 24. After the collection is completed, the sliding plate 23 is moved downward and contacts with the positioning component 4, the sleeve 22 is moved away from the sampling drill bit 11, the bag opening of the flexible bag 24 is tightened, and the sliding plate 23 is pressed downward to make the reset rod 29 contact with the connecting block 331, thereby driving the limit block 332 to disengage from the clamping block 31, and the clamping blocks 31 move away from each other, and the connecting block 331 extends out of the sliding plate 23 and contacts the positioning block 41, thereby pushing the positioning block 41 away from the sliding plate 23, and the flexible bag 24 can be taken out after the sliding plate 23 moves upward.

[0049] A survey sampling method comprises the following steps:

[0050] S1. Insert the extension strip 241 of the flexible bag 24 between the two clamping blocks 31. Pinch the two clamping blocks 31 and bring them closer together so that the limiting block 332 is inserted into the limiting groove 312. This defines the positions of the two clamping blocks 31 and allows the clamping blocks 31 to clamp the extension strip 241.

[0051] S2, turning the opening of the flexible bag 24 outward and placing it on the limiting ring 25;

[0052] S3. After the drilling rig completes sampling and the sampling drill bit 11 is retracted upward, the limit ring 25 is pressed downward so that the upper end of the limit ring 25 is lower than the lower end surface of the sampling drill bit 11. Then, the sleeve 22 is moved below the sampling drill bit so that the limit ring 25 rises and is placed outside the sampling rotary table;

[0053] S4. Tap the sampling drill bit 11 to move the sample in the sampling drill bit 11 downward into the flexible bag 24, and gradually push the limit ring 25 downward. After all the sample in the sampling drill bit 11 falls into the flexible bag 24, press the fiber ring downward to move the sliding plate 23 to below the positioning block 41.

[0054] S5, move the sliding seat 21 in a direction away from the sampling drill bit 11, remove the bag opening of the flexible bag 24 from the limiting ring 25 and tie it tightly;

[0055] S6. Press the limit ring 25 downward until the reset rod 29 is inserted into the sliding plate 23 to push the limit block 332 out of the limit groove 312, gradually reduce the downward pressure on the limit ring 25, and the sliding plate 23 moves upward to stop. Remove the flexible bag 24 from the sliding plate 23 and store it.

[0056] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sampling drill for exploration, characterized by: It comprises a geological drilling rig (1) and a collection component (2) for collecting samples; The geological drilling rig (1) comprises a sampling drill bit (11); The collecting assembly (2) comprises a sliding seat (21) horizontally slidingly arranged on a geological drilling rig, a sleeve (22) fixed on the sliding seat (21), a sliding plate (23) slidingly arranged in the sleeve (22), a flexible bag (24) for wrapping a sample, and a limiting ring (25) for limiting the opening position of the flexible bag (24); a plurality of connecting grooves (221) communicating with the inner cavity of the sleeve (22) are provided on the outer wall of the sleeve (22); a plurality of connecting rods (26) are provided on the sliding plate (23); the connecting rods (26) pass through the connecting grooves (221) and are connected to the limiting ring (25); the bottom of the flexible bag (24) is placed on the sliding plate (23); the upper end of the flexible bag (24) is turned outward and sleeved on the connecting ring; the flexible bag (24) can be sleeved on the lower end of the sampling drill bit (11); The sliding plate (23) is provided with a clamping assembly (3) for limiting the lower end of the flexible bag (24), the clamping assembly (3) comprises two clamping blocks (31) slidingly provided on the sliding plate (23), a clamping elastic member (32) for automatically separating the two clamping blocks (31), and a limiting member (33) for keeping the two clamping blocks (31) in a clamped state, an extension strip (241) is provided at the lower end of the flexible bag (24), and the two clamping blocks (31) are close to each other and clamp the extension strip (241); The limiting member (33) is respectively arranged on both sides of the sliding direction of the clamping block (31), and the limiting member (33) includes a connecting block (331) slidingly arranged in the sliding plate (23), two limiting blocks (332) arranged on the connecting block (331) and a limiting elastic member (333) for pushing the connecting block (331) to move toward the clamping block (31). The sliding direction of the connecting block (331) is perpendicular to the sliding direction of the clamping block (31). The side walls of the clamping block (31) close to the connecting block (331) are each provided with a limiting groove (312), and the limiting blocks (332) on the same connecting block (331) are respectively embedded in the limiting grooves (312) of the two clamping blocks (31).

2. A sampling drill for exploration according to claim 1, characterized in that: A sliding elastic member (27) is provided below the sliding plate (23) for pushing the sliding plate (23) to move upward.

3. The sampling drill for exploration according to claim 1, characterized in that: Two reset rods (29) are provided at the bottom of the sleeve (22), and the reset rods (29) respectively push a limit block (332) to move. A guide slope (291) is provided at the upper end of the reset rod (29), and the end of the guide slope (291) away from the abutment position of the clamping block (31) is tilted downward. The upper end of the reset rod (29) can be inserted into the sliding plate (23), and the guide slope (291) can abut against the connecting block (331) and push the connecting block (331) away from the clamping block (31).

4. A sampling drill for exploration according to claim 3, characterized in that: The sleeve (22) is also provided with a positioning assembly (4) for limiting the upward movement of the sliding plate (23), and the positioning assembly (4) includes a positioning block (41) slidingly provided on the sleeve (22) and a positioning elastic member (42) for pushing the positioning block (41) toward the sliding plate (23). A positioning groove (231) is coaxially provided on the outer wall of the sliding plate (23), and the positioning groove (231) passes through the upper end of the sliding plate (23). The positioning block (41) is provided with an abutting block (43) near the end face of the sliding plate (23), and the lower end of the abutting block (43) can abut against the lower end face of the positioning groove (231). The upper end of the abutting block (43) is provided with a pushing inclined surface (431), and the pushing inclined surface (431) is inclined downward near one end of the sliding plate (23), and the pushing inclined surface (431) can abut against the sliding plate (23).

5. The sampling drill for exploration according to claim 4, characterized in that: One end of the connecting block (331) away from the clamping block (31) extends out of the sliding plate (23); a reset slope (3311) is provided on the end surface of the connecting block (331) extending out of the sliding plate (23); the upper end of the reset slope (3311) is inclined toward the clamping block (31); the reset slope (3311) can simultaneously abut against the positioning block (41) and the abutting block (43), thereby pushing the positioning block (41) away from the sliding plate (23).

6. A survey sampling method using the sampling drill for survey according to claim 5, characterized in that: The steps include: S1. Insert the extension strip (241) of the flexible bag (24) between the two clamping blocks (31), pinch the two clamping blocks (31) to bring the clamping blocks (31) closer to each other so that the limiting block (332) is inserted into the limiting groove (312), thereby limiting the positions of the two clamping blocks (31), so that the clamping blocks (31) clamp the extension strip (241); S2, turning the opening of the flexible bag (24) outward and placing it on the limiting ring (25); S3, after the drilling rig completes sampling and the sampling drill bit (11) is retracted upward, the limiting ring (25) is pressed downward so that the upper end of the limiting ring (25) is lower than the lower end surface of the sampling drill bit (11), and then the sleeve (22) is moved below the sampling drill bit, so that the limiting ring (25) rises and is sleeved outside the sampling drill bit; S4, knocking the sampling drill bit (11) to move the sample in the sampling drill bit (11) downward into the flexible bag (24), and gradually pushing the limiting ring (25) downward. After all the samples in the sampling drill bit (11) fall into the flexible bag (24), the limiting ring (25) is pressed downward to move the sliding plate (23) to the bottom of the positioning block (41); S5, moving the sliding seat (21) in a direction away from the sampling drill bit (11), removing the bag opening of the flexible bag (24) from the limiting ring (25) and tying it tightly; S6. Press the limiting ring (25) downward until the reset rod (29) is inserted into the sliding plate (23) to push the limiting block (332) out of the limiting groove (312), gradually reduce the downward pressure on the limiting ring (25), and the sliding plate (23) moves upward until it stops. The flexible bag (24) is removed from the sliding plate (23) and stored.

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