An automatic deviation correcting device and method for soil drilling sampling of a contaminated site

Abstract

This invention discloses an automatic deviation correction device and method for soil drilling and sampling in contaminated sites. The device includes a mounting frame, the top of which is hinged to a counterweight plate via a ball joint. The bottom of the counterweight plate is connected to a carrier plate via a telescopic device. A fixing component for securing the drilling and sampling equipment is provided at the bottom of the carrier plate. A rod is rotatably mounted on the bottom of the mounting frame, and a gear ring is rotatably mounted on the top of the mounting frame. The top of the rod extends above the mounting frame and is fixedly mounted with a gear meshing with the gear ring. The counterweight plate has a cavity inside, a discharge port at its bottom, and a sealing element for closing the discharge port at the top of the carrier plate. A channel communicating with the cavity is provided inside the ball joint, and a water injection component for injecting water into the cavity through the channel is provided on the outside of the mounting frame. This invention can correct the deviation of the drilling and sampling equipment, ensuring it operates in a vertical position, guaranteeing the collection of soil samples at the required depth, and obtaining accurate experimental data.

Description

Technical Field

[0001] This invention relates to the field of soil sampling technology, and in particular to an automatic deviation correction device and method for soil drilling and sampling in contaminated sites. Background Technology

[0002] Soil sampling refers to the methods of collecting soil samples, including sampling layout and techniques. Profile soil sampling should be conducted after the profile observation and recording are completed.

[0003] To gain a clearer understanding of the contamination status of a site, drilling sampling equipment is typically used. However, when sampling the soil at the bottom of a contaminated stream, existing drilling sampling equipment cannot guarantee vertical drilling into the soil, making it impossible to obtain soil samples at the required depth. This results in inaccurate test data and affects the assessment of the contamination status.

[0004] Therefore, it is necessary to invent an automatic correction device and method for soil drilling and sampling in contaminated sites to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings and provide an automatic correction device and method for soil drilling and sampling in contaminated sites, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an automatic deviation correction device for soil drilling and sampling in contaminated sites, including a mounting frame, wherein the inside of the mounting frame is hinged to the top of the counterweight plate via a ball joint, and the bottom of the counterweight plate is connected to a carrier plate via a telescopic device. The bottom of the carrier plate is provided with a fixing component for fixing the drilling and sampling equipment; a rod is rotatably mounted on the bottom of the mounting frame, and a gear ring is rotatably mounted on the top of the mounting frame. The top of the rod extends above the mounting frame and is fixedly mounted with a gear that meshes with the gear ring; the counterweight plate has a cavity inside, and a discharge port is provided at the bottom of the counterweight plate. The top of the carrier plate is provided with a sealing component for closing the discharge port. The ball joint has a channel communicating with the cavity inside, and a water injection component is provided on the outside of the mounting frame for injecting water into the cavity through the channel.

[0007] Preferably, a ball head sleeve is fixedly installed inside the mounting frame, a ball head is rotatably installed inside the ball head sleeve, a counterweight plate is fixedly connected to the bottom of the ball head, a carrier plate is fixedly connected to the bottom of the counterweight plate through multiple electric push rods, and a clamping assembly for fixing the ball head is provided on the top of the ball head sleeve; insert rods are equidistantly and rotatably installed around the bottom of the mounting frame, a handle is provided on the top of the toothed ring, and a discharge port is provided at the bottom center of the counterweight plate.

[0008] Preferably, the water injection assembly includes a conduit fixedly connected to the middle of the top of the ball head; an annular box is fixedly connected to the top of the mounting bracket via multiple connecting plates; a water pumping chamber is provided inside the insert rod; a rigid pipe communicating with the annular box is fixedly installed on the upper inner side; the bottom of the rigid pipe extends into the water pumping chamber; the rigid pipe is rotatably connected to the inner wall of the insert rod; a piston body is sleeved on the outer side of the rigid pipe; multiple round holes communicating with the water pumping chamber are provided on the lower outer side of the insert rod; the conduit is connected to the annular box via a telescopic hose; a one-way valve is provided inside the telescopic hose and the round holes; a water pumping assembly is provided inside the annular box for pumping water into the annular box through the round holes, the water pumping chamber, and the rigid pipe, and then forcing water into the channel and cavity through the telescopic hose and the conduit; a pressure relief valve is provided at the top of the conduit.

[0009] Preferably, the pumping assembly includes a piston disposed inside an annular box, a push rod fixedly mounted at equal intervals around the bottom of the piston, the bottom of the push rod extending outside the annular box, a first spring sleeved on the outside of the push rod, the two ends of the first spring being fixedly connected to the piston and the bottom wall of the annular box respectively, and a top block cooperating with the bottom of the push rod being fixedly mounted at equal intervals around the top of the toothed ring.

[0010] Preferably, the top of the top block has an arc shape to cooperate with the drive rod to rise and fall.

[0011] Preferably, a filter screen cover is fitted on the outer side of the insertion rod and located at the circular hole. An annular shell is fixedly connected to the lower outer side of the insertion rod and located above the circular hole via four connecting blocks. Vertical rods are fixedly installed around the top of the filter screen cover at equal intervals. The tops of multiple vertical rods extend into the annular shell and are fixedly installed together with a pressure plate. Multiple second springs are provided on the top of the pressure plate. A movable groove is equidistantly opened around the upper outer side of the insertion rod. A movable block is provided in the movable groove. A pull plate is fixedly installed between multiple movable blocks. The pull plate is fixedly connected to the filter screen cover via a pull rope. A baffle is fixedly fitted on the outer side of the insertion rod, and the baffle abuts against the filter screen cover.

[0012] Preferably, the filter screen cover is a cover with an inclined surface on the outside, and the outer side of the cover is provided with filter holes. The filter screen cover is fitted to the insertion rod and can slide up and down along the insertion rod without dislodging from the round holes.

[0013] Preferably, the clamping assembly includes side plates symmetrically fixedly installed on the outside of the ball head sleeve, a threaded rod rotatably installed on the top of the side plate, a movable plate being threaded onto the outside of the threaded rod, a pressure ring being fixedly installed between the two movable plates, and a rubber ring being provided on the inner side of the pressure ring.

[0014] Preferably, the fixing component includes a lead screw, the bottom of the carrier plate is provided with a groove, the lead screw is rotatably installed in the groove, one end of the lead screw extends out of the groove and is fixedly connected to a knob, the texture directions on the left and right sides of the lead screw are opposite, and fixing plates are threaded on both sides of the lead screw.

[0015] In addition, the present invention also discloses a correction method for the above-mentioned automatic correction device for soil drilling and sampling at contaminated sites, comprising the following steps: S1. Fix the drilling and sampling equipment under the carrier plate using the fixing components at the bottom of the carrier plate, move the mounting frame to the stream at the contaminated site, insert the rod at the bottom of the mounting frame into the soil at the bottom of the stream, and position the drilling and sampling equipment above the stream. S2. Rotate the gear ring on the top of the mounting bracket. The gear ring drives the gear at the top of the insertion rod to rotate, thereby driving the insertion rod to rotate. At the same time, the gear ring drives the top block to rotate and cooperates with the water pumping assembly in the annular box. The water is filtered through the filter screen, pumped into the annular box through the water injection assembly, and then injected into the counterweight plate cavity through the telescopic hose, conduit, and ball head internal channel until the cavity and channel are full of water. The insertion rod is then drilled into the soil to complete the device fixation. S3. Release the top clamping assembly of the ball head sleeve from fixing the ball head. The water-filled counterweight plate will swing the ball head, electric push rod, carrier plate and drilling and sampling equipment under the action of gravity, and adjust the drilling and sampling equipment to a vertical position. S4. Start the clamping assembly to clamp and fix the ball head, and complete the automatic correction of the drilling and sampling equipment.

[0016] Beneficial effects of this invention: 1. This invention can correct the deviation of drilling and sampling equipment, so that it can work in a vertical state, ensuring that soil samples can be taken at the required depth and accurate test data can be obtained. When deviation correction is needed, the weight of the counterweight plate can be increased, which greatly improves the efficiency of deviation correction. After sampling, the weight of the counterweight plate can be reduced, making the device easy to carry and avoiding the difficulty of carrying due to excessive weight. 2. This invention can clean the filter screen during the weight gain process, keeping it clean and thus ensuring the normal extraction of stream water, thereby ensuring the smooth progress of weight gain. Attached Figure Description

[0017] Figure 1 A schematic diagram of the automatic deviation correction device for soil drilling and sampling at contaminated sites according to an embodiment of the present invention is shown. Figure 2 A cross-sectional schematic diagram of the automatic deviation correction device for soil drilling and sampling at contaminated sites according to an embodiment of the present invention is shown. Figure 3 An embodiment of the present invention is shown. Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 An embodiment of the present invention is shown. Figure 2 Enlarged structural diagram at point B; Figure 5 A schematic diagram of the insertion rod according to an embodiment of the present invention is shown; Figure 6 An embodiment of the present invention is shown. Figure 5 Enlarged structural diagram at point C; Figure 7 A schematic diagram of a portion of the structure of an embodiment of the present invention is shown; Figure 8 An exploded view of the mounting bracket and annular box according to an embodiment of the present invention is shown; In the diagram: 1. Mounting bracket; 2. Ball head sleeve; 3. Ball head; 4. Counterweight plate; 5. Electric push rod; 6. Carrier plate; 7. Insert rod; 8. Gear ring; 9. Gear; 10. Throttle; 11. Cavity; 12. Sealing component; 13. Conduit; 14. Connecting plate; 15. Annular box; 16. Pumping chamber; 17. Rigid pipe; 18. Round hole; 19. Telescopic hose; 20. Check valve; 21. Piston; 22. Push rod; 23. Push block; 24. Filter screen cover; 25. Annular shell; 26. Vertical rod; 27. Pressure plate; 28. Pull plate; 29. ​​Pull rope; 30. Side plate; 31. Threaded rod; 32. Movable plate; 33. Pressure ring; 34. Lead screw; 35. Knob; 36. Fixed plate; 37. Pressure relief valve; 38. Baffle. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Example 1: As Figure 1-8As shown, an automatic deviation correction device for soil drilling and sampling at contaminated sites includes a mounting frame 1. A ball head sleeve 2 is fixedly installed inside the mounting frame 1, and a ball head 3 is rotatably installed inside the ball head sleeve 2. A counterweight plate 4 is fixedly connected to the bottom of the ball head 3. A carrier plate 6 is fixedly connected to the bottom of the counterweight plate 4 via multiple electric push rods 5. A fixing component for fixing the drilling and sampling equipment is provided at the bottom of the carrier plate 6. The drilling and sampling equipment is a prior art device capable of soil drilling and sampling. Insert rods 7 are equidistantly and rotatably installed around the bottom of the mounting frame 1, and a toothed ring 8 is rotatably installed on the top of the mounting frame 1. The top of the insert rods 7 extends to the top of the mounting frame 1 and is fixedly installed. There is a gear 9 that meshes with the gear ring 8. The top of the gear ring 8 is provided with a throttle 10. The counterweight plate 4 has a cavity 11 inside. The bottom center of the counterweight plate 4 is provided with a discharge port. The top of the carrier plate 6 is provided with a sealing member 12 for sealing the discharge port. The sealing member 12 is a rubber pad. The top of the carrier plate 6 is set as an arc shape. The sealing member 12 is adapted to the shape of the top of the carrier plate 6. The discharge port can be sealed by the fitting of the sealing member 12 with the discharge port. The ball head 3 has a channel inside that communicates with the cavity 11. The outside of the mounting bracket 1 is provided with a water injection component for injecting water into the cavity 11 through the channel. The top of the ball head sleeve 2 is provided with a clamping component for fixing the ball head 3.

[0020] In use, the drilling and sampling equipment is fixed under the carrier plate 6 using the fixing components. The mounting frame 1 is then moved to the polluted stream. The bottom of the insertion rod 7 is partially inserted into the soil at the bottom of the stream, positioning the drilling and sampling equipment above the water. The throttle 10 is then turned, causing the gear ring 8 to rotate, which in turn drives the gear 9 to rotate the insertion rod 7. Simultaneously, stream water is injected into the cavity 11 through the water injection component, filling the cavity 11 and the channel components. As water is injected, the weight of the entire device continuously increases. The rotating insertion rod 7 facilitates drilling into the soil. Finally, the channel and cavity 11 are filled with water, and the insertion rod 7 is driven into the soil, securing the entire device. At this point, the drilling and sampling equipment is positioned above the stream. The clamping assembly is then removed from the ball head 3. The overall weight of the water-filled counterweight plate 4 is greater than that of the ball head 3 connected above it and all components connected below it. Since the counterweight plate 4 is located at the bottom center of the ball head 3, after removing the fixation of the ball head 3, under the influence of gravity, the counterweight plate 4 carries the ball head... The fixed components and drilling and sampling equipment below 3 swing to level the drilling and sampling equipment and make it vertical. Then, the ball head 3 is fixed by the clamping components, thus completing the correction of the drilling and sampling equipment and making it vertical. This allows for vertical sampling and ensures that the soil at the required depth can be obtained. Then, the drilling and sampling equipment drills into the soil inside the stream to collect samples. After sampling, the electric push rod 5 is activated to extend it and lower the carrier plate 6, causing the sealing part 12 to descend away from the outlet, allowing the stream water in the cavity 11 to be discharged. The discharged stream water slides outward along the carrier plate 6 and will not fall on the drilling and sampling equipment. After discharge, the electric push rod 5 is activated to shorten it, and conversely, the sealing part 12 is raised to close the outlet. During use, the stream water is subsequently pumped out and injected into the cavity 11 and channel to increase the weight of the counterweight plate 4. After use, the weight of the counterweight plate 4 can be reduced, making the device easy to carry and avoiding the difficulty of carrying due to excessive weight.

[0021] like Figures 2 to 4As shown, the water injection assembly includes a conduit 13 fixedly connected to the middle of the top of the ball head 3. An annular box 15 is fixedly connected to the top of the mounting bracket 1 via multiple connecting plates 14. A pumping chamber 16 is provided inside the insert rod 7. A rigid pipe 17 communicating with the annular box 15 is fixedly installed on the upper inner side of the annular box 15. The bottom of the rigid pipe 17 extends into the pumping chamber 16. The rigid pipe 17 is rotatably connected to the inner wall of the insert rod 7. A piston body is sleeved on the outer side of the rigid pipe 17. A valve body communicating with the pumping chamber 16 is located on the lower outer side of the insert rod 7. Multiple round holes 18 and a conduit 13 are connected to an annular box 15 via a telescopic hose 19. The telescopic hose 19 can be stretched without affecting the swing of the ball head 3. One-way valves 20 are provided inside both the telescopic hose 19 and the round holes 18. The annular box 15 is equipped with a pumping assembly for drawing water into the annular box 15 through the round holes 18, the pumping chamber 16, and the rigid pipe 17, and then pressing the water into the channel and cavity 11 through the telescopic hose 19 and the conduit 13. A pressure relief valve 37 is provided at the top of the conduit 13.

[0022] The rotating gear ring 8, in conjunction with the pumping assembly, draws stream water through the round hole 18, the pumping chamber 16, and the rigid pipe 17 into the annular box 15. At this time, the one-way valve 20 in the round hole 18 opens, and the one-way valve 20 in the telescopic hose 19 closes. Subsequently, in conjunction with the pumping assembly, water in the annular box 15 is injected into the channel and cavity 11 through the telescopic hose 19 and the conduit 13. At this time, the one-way valve 20 in the round hole 18 closes, and the one-way valve 20 in the telescopic hose 19 opens. As the gear ring 8 continues to rotate, in conjunction with the pumping assembly, stream water can be continuously drawn out and injected into the channel and cavity 11, thereby increasing the weight of the counterweight plate 4. When the channel and cavity 11 are full of water, the pressure relief valve 37 is opened, which stops the rotation of the gear ring 8 and stops pumping.

[0023] like Figure 3 As shown, the pumping assembly includes a piston 21 disposed inside an annular box 15. A push rod 22 is fixedly mounted around the bottom of the piston 21 at equal intervals. The bottom of the push rod 22 extends outside the annular box 15. A first spring is sleeved on the outside of the push rod 22. The two ends of the first spring are fixedly connected to the piston 21 and the bottom wall of the annular box 15, respectively. A top block 23 that cooperates with the push rod 22 is fixedly mounted around the top of the toothed ring 8 at equal intervals.

[0024] The toothed ring 8 rotates with the top block 23. After the top block 23 leaves the top rod 22, the deformation of the first spring releases its force, causing the piston 21 and the top rod 22 to descend, thus drawing stream water into the annular box 15. When the top block 23 comes into contact with the top rod 22 again, it causes the drive rod 22 to rise with the piston 21, while stretching the first spring to deform and generate force, which then squeezes the stream water out of the annular box 15.

[0025] like Figure 3 As shown, the top block 23 is specifically configured with an arc-shaped block component on the top, and the top block 23 can cooperate with the arc-shaped drive rod 22 to rise.

[0026] This allows the top block 23 to cooperate with the arc surface to push the top rod 22 upward.

[0027] like Figures 2 to 6 As shown, a filter screen cover 24 is fitted on the outer side of the insertion rod 7 and located at the circular hole 18. An annular shell 25 is fixedly connected to the lower outer side of the insertion rod 7 and located above the circular hole 18 by four connecting blocks. Vertical rods 26 are fixedly installed around the top of the filter screen cover 24 at equal intervals. The tops of multiple vertical rods 26 extend into the annular shell 25 and are fixedly installed together with a pressure plate 27. Multiple second springs are provided on the top of the pressure plate 27. Moving grooves are opened around the upper outer side of the insertion rod 7 at equal intervals. Moving blocks are provided in the moving grooves. Pull plates 28 are fixedly installed between multiple moving blocks. Pull plates 28 are fixedly connected to the filter screen cover 24 by pull ropes 29. A baffle 38 is fixedly fitted on the outer side of the insertion rod 7 and abuts against the filter screen cover 24.

[0028] Because the stream water contains impurities that may clog the filter screen 24, the throttle handle 10 can be stopped midway. The pull plate 28 can be pulled to lift the filter screen 24, the vertical rod 26, and the pressure plate 27 via the pull rope 29. At the same time, the second spring is compressed, causing it to deform and generate force. Then the pull plate 28 can be released. At this time, under the action of the second spring, the pressure plate 27 is quickly reset, causing the filter screen 24 to quickly descend and reset. The filter screen 24 collides with the baffle 38 quickly, generating vibration, which shakes off the impurities attached to the filter screen 24, allowing the impurities to leave the filter screen 24 and cleaning it. The above operation can be repeated to clean the filter screen 24 and keep it clean, thus ensuring the normal extraction of stream water.

[0029] like Figure 4 As shown, the filter screen cover 24 is specifically configured as a cover with an inclined surface on the outside, and filter holes are provided on the outside of the cover. The filter screen cover 24 is fitted to the insertion rod 7 and can slide up and down along the insertion rod 7. The filter screen cover 24 will not detach from the round hole 18.

[0030] This allows the filter screen 24 to filter impurities in the stream water, and when the filter screen 24 moves downwards and collides with the baffle 38, it can shake off the impurities on its surface.

[0031] like Figures 1 to 3 As shown, the clamping assembly includes side plates 30 symmetrically fixedly installed on the outside of the ball head sleeve 2. A threaded rod 31 is rotatably installed on the top of the side plate 30. A movable plate 32 is threaded on the outside of the threaded rod 31. A pressure ring 33 is fixedly installed between the two movable plates 32. A rubber ring is provided on the inner side of the pressure ring 33.

[0032] Rotating the pair of threaded rods 31 in the forward direction allows the movable plate 32 and pressure ring 33 to rise, causing the rubber ring to leave the ball head 3 and releasing the fixation of the ball head 3. The threaded rods 31 can be reversed, which in turn allows the rubber ring to come into contact with the ball head 3, thus clamping and fixing it.

[0033] like Figure 2 As shown, the fixing assembly includes a lead screw 34, and a groove is provided at the bottom of the carrier plate 6. The lead screw 34 is rotatably installed in the groove. One end of the lead screw 34 extends out of the groove and is fixedly connected to a knob 35. The texture directions on the left and right sides of the lead screw 34 are opposite. Fixing plates 36 are threaded on both sides of the lead screw 34.

[0034] Rotating knob 35 causes the lead screw 34 to rotate clockwise, thereby driving a pair of fixing plates 36 to move closer together in accordance with the grooves, which can fix the drilling and sampling equipment. Conversely, rotating knob 35 in reverse can separate the pair of fixing plates 36 and cancel the fixation of the drilling and sampling equipment.

[0035] Example 2: A method for correcting deviation using the automatic deviation correction device for soil drilling and sampling at contaminated sites as described above, comprising the following steps: S1. When in use, fix the drilling and sampling equipment under the carrier plate 6 using the fixing components, move the mounting frame 1 to the polluted stream, insert the bottom of the insertion rod 7 into the soil at the bottom of the stream, and the drilling and sampling equipment is located above the stream. S2. Then, turn the handle 10 to make it rotate with the gear ring 8, thereby driving the gear 9 to rotate with the insertion rod 7. At this time, the water is injected into the cavity 11 through the water injection component, so that the cavity 11 and the channel component are filled. As the water is injected, the weight of the entire device increases continuously. With the rotation of the insertion rod 7, it is easier to drill into the soil. Finally, the channel and cavity 11 are filled with water, the insertion rod 7 drills into the soil, and the entire device is fixed. S3. At this time, the drilling and sampling equipment is located above the stream. Then, the clamping assembly is removed from fixing the ball head 3. The overall weight of the water-filled counterweight plate 4 is greater than the ball head 3 connected above it and all the components connected below it. The counterweight plate 4 is located at the bottom center of the ball head 3. Therefore, after the fixation of the ball head 3 is removed, under the action of gravity, the counterweight plate 4 swings the ball head 3, the fixing assembly below it, and the drilling and sampling equipment, so that the drilling and sampling equipment can be leveled and made to be in a vertical state. Then, the ball head 3 is fixed by the clamping assembly, thus completing the correction of the drilling and sampling equipment.

[0036] The specific working principle is as follows: During use, turn knob 35 to make the lead screw 34 rotate clockwise, thereby coordinating with the grooved drive to move a pair of fixing plates 36 closer together, thus fixing the drilling and sampling equipment. Move the mounting frame 1 to the polluted stream, inserting the bottom of the insertion rod 7 partially into the soil at the bottom of the stream. At this time, the drilling and sampling equipment is above the stream. Then, turn handle 10 to make the gear ring 8 rotate, thereby driving gear 9 to rotate the insertion rod 7. Simultaneously, the gear ring 8 rotates the top block 23. After the top block 23 leaves the top rod 22, the deformation of the first spring releases force, causing the piston 21 and the top rod 22 to descend, drawing stream water into the annular box 15. At this time, the one-way valve 20 in the round hole 18 opens, and the telescopic hose 19... When the one-way valve 20 closes, and the top block 23 contacts the top rod 22 again, the drive rod 22 causes the piston 21 to rise, simultaneously stretching the first spring and causing it to deform and generate force. At this time, the stream water in the annular box 15 is squeezed outward. At this time, the one-way valve 20 in the round hole 18 closes, and the one-way valve 20 in the telescopic hose 19 opens, allowing the stream water in the annular box 15 to be injected into the channel and cavity 11 through the telescopic hose 19 and the conduit 13. As the gear ring 8 rotates continuously, the stream water can be continuously drawn out and injected into the channel and cavity 11, thereby increasing the weight of the counterweight plate 4. As water is injected, the weight of the entire device continuously increases, which, together with the rotating insertion rod 7, makes it easier to drill into the soil. Finally, the channel and cavity 11 are filled with water. When the insertion rod 7 is drilled into the soil, and the channel and cavity 11 are full of water, the pressure relief valve 37 is opened, stopping the rotation of the gear ring 8 and stopping the pumping, thus fixing the entire device. At this time, the drilling and sampling equipment is located above the stream. Rotating the pair of threaded rods 31 in the forward direction causes the movable plate 32 and pressure ring 33 to rise, causing the rubber ring to leave the ball head 3 and releasing the fixation of the ball head 3. Under the action of gravity, the counterweight plate 4 causes the ball head 3, the fixing plate 36 below, and the drilling and sampling equipment to swing, ultimately leveling the drilling and sampling equipment and making it vertical. Reversing the threaded rods 31 resets the rubber ring, clamping and fixing the ball head 3. This completes the correction of the drilling and sampling equipment, making it vertical. Sampling is performed to ensure that soil samples are taken at the required depth. Then, the drilling and sampling equipment is used to drill into the soil inside the stream to collect samples. After sampling, the electric push rod 5 is activated to extend it and lower the carrier plate 6, causing the sealing member 12 to descend away from the outlet, allowing the stream water in the cavity 11 to be discharged. The discharged stream water slides outward along the carrier plate 6 and will not fall onto the drilling and sampling equipment. After discharge, the electric push rod 5 is activated to shorten it, and conversely, the sealing member 12 is raised to close the outlet. When the device is in use, stream water is subsequently pumped out and injected into the cavity 11 and the channel to increase the weight of the counterweight plate 4. After use, the weight of the counterweight plate 4 can be reduced, making the device easy to carry and avoiding the difficulty of carrying due to excessive weight.The filter screen 24 filters impurities, preventing the round holes 18 from clogging. Since impurities in the stream water may clog the filter screen 24, the handle 10 can be stopped midway. Pulling the pull plate 28 causes it to pull the filter screen 24, vertical rod 26, and pressure plate 27 upwards via the pull rope 29. Simultaneously, the second spring is compressed, causing it to deform and generate force. Then, the pull plate 28 can be released. At this point, under the action of the second spring, the pressure plate 27 quickly returns to its original position, causing the filter screen 24 to quickly descend and return to its original position. This causes the filter screen 24 to collide rapidly with the baffle 38, generating vibration and shaking off the impurities attached to the filter screen 24. This cleaning of the filter screen 24 can be achieved by repeating the above operation to keep it clean and ensure the normal extraction of stream water.

[0037] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An automatic deviation correction device for soil drilling and sampling in contaminated sites, comprising a mounting frame (1), wherein the inside of the mounting frame (1) is hinged to the top of a counterweight plate (4) via a ball joint (3), and the bottom of the counterweight plate (4) is connected to a carrier plate (6) via a telescopic device, wherein the bottom of the carrier plate (6) is provided with a fixing component for fixing the drilling and sampling equipment; characterized in that: The mounting bracket (1) has a rotatable insert rod (7) at its bottom and a gear ring (8) at its top. The top of the insert rod (7) extends above the mounting bracket (1) and is fixedly fitted with a gear (9) that meshes with the gear ring (8). The counterweight plate (4) has a cavity (11) inside. The bottom of the counterweight plate (4) has a discharge port. The top of the carrier plate (6) has a sealing member (12) for closing the discharge port. The ball head (3) has a channel inside that communicates with the cavity (11). The outside of the mounting bracket (1) has a water injection component for injecting water into the cavity (11) through the channel.

2. The automatic deviation correction device for soil drilling and sampling in contaminated sites according to claim 1, characterized in that: The mounting bracket (1) has a ball head sleeve (2) fixedly installed inside, and a ball head (3) is rotatably installed inside the ball head sleeve (2). A counterweight plate (4) is fixedly connected to the bottom of the ball head (3). A carrier plate (6) is fixedly connected to the bottom of the counterweight plate (4) through multiple electric push rods (5). A clamping assembly for fixing the ball head (3) is provided on the top of the ball head sleeve (2). Insert rods (7) are equidistantly and rotatably installed around the bottom of the mounting bracket (1). A handle (10) is provided on the top of the toothed ring (8). A discharge port is provided at the bottom center of the counterweight plate (4).

3. The automatic deviation correction device for soil drilling and sampling in contaminated sites according to claim 1, characterized in that: The water injection assembly includes a conduit (13) fixedly connected to the middle of the top of the ball head (3). The top of the mounting bracket (1) is fixedly connected to an annular box (15) via multiple connecting plates (14). The inside of the insert rod (7) is provided with a water pumping chamber (16). A rigid pipe (17) communicating with the annular box (15) is fixedly installed on the upper inner side. The bottom of the rigid pipe (17) extends into the water pumping chamber (16). The rigid pipe (17) is rotatably connected to the inner wall of the insert rod (7). A piston body is sleeved on the outer side of the rigid pipe (17). The lower outer side of the insert rod (7) is provided with... There are multiple round holes (18) communicating with the water pumping chamber (16). The conduit (13) is connected to the annular box (15) through the telescopic hose (19). The telescopic hose (19) and the round holes (18) are equipped with one-way valves (20). The annular box (15) is equipped with a water pumping assembly for pumping water into the annular box (15) through the round holes (18), the water pumping chamber (16), and the hard pipe (17), and then forcing the water into the channel and cavity (11) through the telescopic hose (19) and the conduit (13). The top of the conduit (13) is equipped with a pressure relief valve (37).

4. The automatic deviation correction device for soil drilling and sampling in contaminated sites according to claim 3, characterized in that: The pumping assembly includes a piston (21) disposed inside an annular box (15). A push rod (22) is fixedly mounted around the bottom of the piston (21) at equal intervals. The bottom of the push rod (22) extends outside the annular box (15). A first spring is sleeved on the outside of the push rod (22). The two ends of the first spring are fixedly connected to the piston (21) and the bottom wall of the annular box (15) respectively. A top block (23) that mates with the bottom of the push rod (22) is fixedly mounted around the top of the toothed ring (8) at equal intervals.

5. The automatic deviation correction device for soil drilling and sampling in contaminated sites according to claim 4, characterized in that: The top of the top block (23) is arc-shaped, which is used to cooperate with the drive rod (22) to rise and fall.

6. The automatic deviation correction device for soil drilling and sampling in contaminated sites according to claim 1, characterized in that: A filter screen cover (24) is fitted on the outside of the insertion rod (7) and located at the round hole (18). An annular shell (25) is fixedly connected to the lower part of the outside of the insertion rod (7) and located above the round hole (18) by four connecting blocks. Vertical rods (26) are fixedly installed around the top of the filter screen cover (24) at equal intervals. The tops of multiple vertical rods (26) extend into the annular shell (25) and are fixedly installed together with a pressure plate (27). Multiple second springs are provided on the top of the pressure plate (27). A moving groove is opened around the upper part of the outside of the insertion rod (7) at equal intervals. A moving block is provided in the moving groove. A pull plate (28) is fixedly installed between multiple moving blocks. The pull plate (28) is fixedly connected to the filter screen cover (24) by a pull rope (29). A baffle (38) is fixedly fitted on the outside of the insertion rod (7). The baffle (38) abuts against the filter screen cover (24).

7. The automatic deviation correction device for soil drilling and sampling in contaminated sites according to claim 6, characterized in that: The filter screen cover (24) is a cover with an inclined surface on the outside. The outer side of the cover is provided with filter holes. The filter screen cover (24) is fitted to the insert rod (7) and can slide up and down along the insert rod (7) without dislodging from the round hole (18).

8. The automatic deviation correction device for soil drilling and sampling in contaminated sites according to claim 2, characterized in that: The clamping assembly includes a side plate (30) symmetrically fixedly installed on the outside of the ball head sleeve (2). A threaded rod (31) is rotatably installed on the top of the side plate (30). A movable plate (32) is threaded on the outside of the threaded rod (31). A pressure ring (33) is fixedly installed between the two movable plates (32). A rubber ring is provided on the inner side of the pressure ring (33).

9. The automatic deviation correction device for soil drilling and sampling in contaminated sites according to claim 1, characterized in that: The fixing component includes a lead screw (34), the bottom of the carrier plate (6) is provided with a groove, the lead screw (34) is rotatably installed in the groove, one end of the lead screw (34) extends to the outside of the groove and is fixedly connected to a knob (35), the texture directions on the left and right sides of the lead screw (34) are opposite, and both sides of the lead screw (34) are threaded with fixing plates (36).

10. A correction method for an automatic correction device for soil drilling and sampling at contaminated sites according to any one of claims 1 to 9, characterized in that: Includes the following steps: S1. Fix the drilling and sampling equipment under the carrier plate (6) using the fixing components at the bottom of the carrier plate (6), move the mounting frame (1) to the stream at the contaminated site, insert the rod (7) at the bottom of the mounting frame (1) into the soil at the bottom of the stream, and place the drilling and sampling equipment above the stream. S2. Rotate the gear ring (8) on the top of the mounting bracket (1). The gear ring (8) drives the gear (9) at the top of the insertion rod (7) to rotate, thereby driving the insertion rod (7) to rotate. At the same time, the gear ring (8) drives the top block (23) to rotate and cooperate with the water pumping assembly in the ring box (15). The water is filtered through the filter screen (24), pumped into the ring box (15) through the water injection assembly, the water is pumped through the water pumping chamber (16), and the hard pipe (17), and then injected into the cavity (11) of the counterweight plate (4) through the telescopic hose (19), the guide pipe (13), and the internal channel of the ball head (3) until the cavity (11) and the channel are filled with water. The insertion rod (7) is drilled into the soil to complete the device fixation. S3. Release the top clamping assembly of the ball head sleeve (2) from fixing the ball head (3). The water-filled counterweight plate (4) drives the ball head (3), electric push rod (5), carrier plate (6) and drilling and sampling equipment to swing under the action of gravity, and adjust the drilling and sampling equipment to a vertical state. S4. Start the clamping assembly to clamp and fix the ball head (3) to complete the automatic correction of the drilling and sampling equipment.

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