Hydrogeological prospecting drilling device and method

Abstract

The invention discloses a hydrogeological prospecting drilling device and method, and relates to the technical field of hydrogeologies.The hydrogeological prospecting drilling device comprises a supporting frame and a drilling rod, the drilling rod is movably connected to the outer side of the supporting frame, and a shearing assembly is arranged on the drilling rod; the shearing assembly comprises a plurality of shearing plates rotationally connected to the inner side of the drill rod, a pulling plate slidably arranged on the outer side of the drill rod, and a locking unit and a transmission unit which are arranged on the drill rod, the pulling plate is pulled to drive the multiple shearing plates to unfold to shear soil through the transmission unit, the locking unit locks the position of the pulling plate, and shielding belts are installed on the outer sides of the shearing plates. By arranging the shearing assembly, a plurality of shearing plates can be unfolded to separate a soil sample on the inner side of the drill rod from external soil during sampling, falling or deformation of the sample in the lifting process can be reduced, the sample representativeness is improved, and when the plurality of shearing plates are unfolded, a shielding belt can be driven to be unfolded into the hole diameter of the bottom of the drill rod; an opening in the bottom of the drill rod is in an approximately sealed state, and contact between a sample and the outside is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogeology, and particularly relates to a hydrogeological prospecting drilling device and method. BACKGROUND

[0002] The hydrogeological prospecting drilling device is a special equipment for detecting the occurrence regularity of underground water and the distribution of mineral resources. Its core function is to obtain underground core samples through drilling, and to determine the position of the aquifer, water quality and quantity, and the occurrence of the ore body by combining with geological parameter analysis, so as to determine the depth, thickness, lithology and distribution range of the aquifer through drilling, and to provide a basis for underground water exploitation. For example, in arid areas, accurate positioning of the aquifer can solve the problem of drinking water, and evaluate the influence of underground water level on building foundation to avoid foundation settlement or landslide caused by underground water penetration. For example, in bridge construction, the underground water conditions of the bridge foundation position need to be determined through drilling.

[0003] In the sampling process of the conventional drilling equipment, the sample is easy to fall off due to friction or adhesion with the external soil, or to deform due to uneven stress, thereby affecting the integrity and representativeness of the sample, and the external soil, water or other impurities are easy to enter the inside of the drill rod and mix with the sample, causing sample pollution. Therefore, a hydrogeological prospecting drilling device and method are proposed. SUMMARY

[0004] The purpose of the present application is to solve the problem in the prior art that the sample is easy to fall off due to friction or adhesion with the external soil, or to deform due to uneven stress, thereby affecting the integrity and representativeness of the sample, and the external soil, water or other impurities are easy to enter the inside of the drill rod and mix with the sample, causing sample pollution, and a hydrogeological prospecting drilling device and method are proposed.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: A hydrogeological prospecting drilling device, comprising a support frame and a drill rod, the drill rod is movably connected to the outside of the support frame, a shearing assembly is arranged on the drill rod, the shearing assembly comprises a plurality of shearing plates movably connected to the inside of the drill rod, a pulling plate movably arranged on the outside of the drill rod, a locking unit arranged on the drill rod, and a transmission unit, the pulling plate pulls the pulling plate to drive the plurality of shearing plates to expand and shear the soil through the transmission unit, and the locking unit locks the position of the pulling plate, a shielding belt is mounted on the outside of the shearing plate, the shielding belt is movably connected between the shearing plate and the drill rod, and the shearing plate drives the shielding belt to move into the aperture of the drill rod when the shearing plate expands.

[0006] The above-mentioned technical scheme further comprises: The upper end of the support frame is provided with a first driving device, the output end of the first driving device is provided with a threaded rod, the threaded rod is rotatably connected with the support frame, the inner side of the support frame is symmetrically provided with a guide groove, the inner side of the two guide grooves is commonly provided with a movable plate which is threadedly connected with the threaded rod, the threaded rod drives the movable plate and the drill rod to move downward when rotating, the side of the movable plate is provided with a second driving device, the drill rod is installed on the output end of the second driving device, and the second driving device drives the drill rod to rotate when being started.

[0007] The transmission unit comprises that the inner wall of the drill rod is provided with a first annular groove, a plurality of first rotating rods are rotatably connected with the inner side of the first annular groove, the shearing plate is installed on the outer side of the first rotating rod, the inner side of the drill rod is provided with a second annular groove, the end of the first rotating rod extending to the inner side of the second annular groove is provided with a gear, the inner side of the second annular groove is rotatably connected with a rack, the rack is engaged with the gear, and the rack drives the plurality of gears to rotate when rotating.

[0008] The inner side of the drill rod is provided with a first sliding groove, the inner side of the first sliding groove is slidably provided with a movable rod, the bottom of the movable rod is fixedly connected with the rack, and the upper end of the movable rod is fixedly connected with a pulling plate.

[0009] The locking unit comprises that the side of the pulling plate is provided with a U-shaped plate, the inner side of the first sliding groove is provided with an open groove, the inner wall of the open groove is provided with a first telescopic rod, the end of the first telescopic rod is provided with a movable block, the upper portion of the movable block is provided with a pulling rod, and the pulling rod is movably connected with the drill rod.

[0010] The movable block is in the form of a trapezoid, the movable block is above the movement track of the U-shaped plate, the opening size of the upper groove of the U-shaped plate is matched with the size of the movable block, and the U-shaped plate moves to the inner side of the open groove when the pulling plate moves.

[0011] The inner side of the drill rod is provided with a plurality of storage grooves, the storage grooves are movably connected with the shielding belt, the inner side of the storage groove is provided with a second sliding groove, the inner portion of the second sliding groove is slidably provided with a sliding block, the bottom of the sliding block is provided with a second telescopic rod, the end of the second telescopic rod away from the sliding block is fixedly connected with the inner wall of the second sliding groove, and the side of the sliding block is fixedly connected with the shielding belt.

[0012] The side of the shearing plate away from the shielding belt is in the form of a trapezoid, a plurality of shearing plates are expanded and sheared by the sharp surface of the trapezoid.

[0013] A hydrogeological prospecting drilling method, employing a hydrogeological prospecting drilling device, includes the following steps: Step 1: The support frame drives the drill rod to move down and rotate, and then the drill rod is inserted into the soil. After the drill rod is inserted into the soil, the soil enters the borehole of the drill rod for sampling. Step 2: Pull the pull plate. As the pull plate moves, it drives multiple shear plates to rotate. When the multiple shear plates rotate, they shear the soil with their sharp surfaces, separating the soil inside the drill rod from the ground soil. Step 3: When multiple shearing plates shear the soil, they cause multiple shielding strips to unfold. After the shielding strips unfold, the drill rod is in a near-sealed state. Then, the drill rod is moved to the ground by the support frame.

[0014] The present invention has the following beneficial effects: 1. In this invention, by setting a shearing component, multiple shearing plates can be unfolded during sampling to separate the soil sample inside the drill rod from the external soil, which can reduce the sample falling off or deforming during the lifting process and improve the representativeness of the sample.

[0015] 2. In this invention, when multiple shear plates are unfolded, they can drive the shielding strip to unfold into the bottom hole of the drill rod. The multiple shielding strips make the opening at the bottom of the drill rod almost sealed, reducing the contact between the sample and the outside world, thereby avoiding contamination of the soil sample. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a hydrogeological prospecting drilling device and method proposed in this invention. Figure 2 This is a schematic diagram of the side cross-sectional structure of the drill pipe in this invention; Figure 3 This is a schematic diagram of the first cross-sectional structure of the bottom of the drill pipe in this invention; Figure 4 This is a schematic diagram of the second cross-sectional structure of the bottom of the drill pipe in this invention; Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 for Figure 2 Enlarged schematic diagram of the structure at point B; Figure 7 for Figure 3 Enlarged schematic diagram of the structure at point C; Figure 8 for Figure 4 Enlarged schematic diagram of the structure at point D.

[0017] In the diagram: 1. Support frame; 2. Movable plate; 3. Guide groove; 4. First drive device; 5. Threaded rod; 6. Second drive device; 7. Drill rod; 8. First annular groove; 9. First rotating rod; 10. Shearing plate; 11. Second annular groove; 12. Gear; 13. Rack; 14. First sliding groove; 15. Movable rod; 16. Pulling plate; 17. U-shaped plate; 18. Opening groove; 19. First telescopic rod; 20. Movable block; 21. Pulling rod; 22. Storage groove; 23. Shielding strip; 24. Second sliding groove; 25. Sliding block; 26. Second telescopic rod. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 - Figure 8 As shown, the present invention proposes a hydrogeological prospecting drilling device, including a support frame 1 and a drill rod 7. The drill rod 7 is movably connected to the outside of the support frame 1. A shearing assembly is provided on the drill rod 7. The shearing assembly includes multiple shearing plates 10 rotatably connected to the inside of the drill rod 7, a pulling plate 16 slidably disposed on the outside of the drill rod 7, a locking unit and a transmission unit disposed on the drill rod 7. Pulling the pulling plate 16 drives the multiple shearing plates 10 to unfold and shear the soil through the transmission unit. The locking unit locks the position of the pulling plate 16. A shielding strip 23 is installed on the outside of the shearing plate 10. The shielding strip 23 is movably connected to the drill rod 7. When the shearing plate 10 unfolds, it drives the shielding strip 23 to move into the borehole of the drill rod 7.

[0020] A first driving device 4 is installed on the upper end of the support frame 1. A threaded rod 5 is installed on the output end of the first driving device 4. The threaded rod 5 is rotatably connected to the support frame 1. Guide grooves 3 are symmetrically opened on the inner side of the support frame 1. A movable plate 2 is slidably arranged on the inner side of the two guide grooves 3. The movable plate 2 is threadedly connected to the threaded rod 5. When the threaded rod 5 rotates, it drives the movable plate 2 and the drill rod 7 to move downward. A second driving device 6 is installed on the side of the movable plate 2. The drill rod 7 is installed on the output end of the second driving device 6. After the second driving device 6 is started, it drives the drill rod 7 to rotate.

[0021] The transmission unit includes a first annular groove 8 formed on the inner wall of the drill rod 7. A plurality of first rotating rods 9 are rotatably connected to the inner side of the first annular groove 8. The shearing plate 10 is installed on the outer side of the first rotating rods 9. A second annular groove 11 is formed on the inner side of the drill rod 7. A gear 12 is installed at the end of the first rotating rod 9 extending to the inner side of the second annular groove 11. A rack 13 is rotatably connected to the inner side of the second annular groove 11. The rack 13 meshes with the gear 12. When the rack 13 rotates, it drives the plurality of gears 12 to rotate.

[0022] The drill rod 7 has a first sliding groove 14 on its inner side. A movable rod 15 is slidably arranged on the inner side of the first sliding groove 14. The bottom of the movable rod 15 is fixedly connected to the rack 13. The upper end of the movable rod 15 is fixedly connected to the pull plate 16. The pull plate 16 is slidably connected to the first sliding groove 14. The pull plate 16 pulls the movable rod 15 to drive the rack 13 to rotate.

[0023] The locking unit includes a U-shaped plate 17 mounted on the side of the pull plate 16, an opening groove 18 opened on the inner side of the first sliding groove 14, a first telescopic rod 19 mounted on the inner wall of the opening groove 18, a movable block 20 mounted on the end of the first telescopic rod 19, and a pull rod 21 mounted on the upper part of the movable block 20. The pull rod 21 is movably connected to the drill rod 7.

[0024] The movable block 20 has a trapezoidal cross section and is positioned on the movement trajectory of the U-shaped plate 17. The size of the opening of the groove on the upper part of the U-shaped plate 17 is adapted to the size of the movable block 20. When the pulling plate 16 moves, the U-shaped plate 17 moves to the inside of the opening groove 18.

[0025] The drill rod 7 has multiple storage slots 22 on its inner side. The storage slots 22 are movably connected to the shielding strip 23. The storage slots 22 have a second sliding groove 24 on their inner side. A sliding block 25 is slidably disposed inside the second sliding groove 24. A second telescopic rod 26 is installed at the bottom of the sliding block 25. The end of the second telescopic rod 26 away from the sliding block 25 is fixedly connected to the inner wall of the second sliding groove 24. The side of the sliding block 25 is fixedly connected to the shielding strip 23.

[0026] The shearing plate 10 has a trapezoidal cross-section on the side away from the shielding strip 23. Multiple shearing plates 10 are unfolded and shear the soil through the sharp surface of their trapezoids.

[0027] In this embodiment, when sampling is required, the first driving device 4 and the second driving device 6 are activated simultaneously. After the first driving device 4 is activated, it drives the threaded rod 5 to rotate. When the threaded rod 5 rotates, it drives the movable plate 2 to move downwards along the guide groove 3, simultaneously driving the drill rod 7 to move downwards. After the second driving device 6 is activated, it drives the drill rod 7 to rotate, thus allowing the drill rod 7 to rotate while moving downwards, and then insert it into the soil for sampling. Then, the pulling plate 16 can be pulled, causing the movable rod 15 to move along the first sliding groove 14, simultaneously driving the rack 13 to rotate. Since the rack 13 meshes with multiple gears 12, when the rack 13 rotates, it drives multiple gears 12 to rotate, simultaneously driving multiple first rotating rods 9 to rotate. When the multiple first rotating rods 9 rotate, they drive multiple shearing plates 10 to unfold and shear the soil through their trapezoidal sharp surfaces, facilitating the separation of the soil inside the drill rod 7 from the ground. When the pulling plate 16 moves, it can... The U-shaped plate 17 moves to the inside of the opening slot 18, and then the upper groove of the U-shaped plate 17 is engaged with the movable block 20. At the same time, the U-shaped plate 17 and the movable block 20 are kept engaged by the telescopic property of the first telescopic rod 19. The unfolded state of the multiple shearing plates 10 can be locked by locking the pull plate 16. When the multiple shearing plates 10 are unfolded, the multiple shielding strips 23 can be pulled to move to the outside of the storage slot 22 and then enter the bore of the drill rod 7. At this time, the bottom opening of the drill rod 7 can be sealed by the multiple shielding strips 23, reducing the contact between the sample and the outside. The shielding strips 23 move to drive the sliding block 25 to move along the second sliding slot 24. At this time, the second telescopic rod 26 is stretched. If the shearing plate 10 does not need to drive the shielding strips 23 to unfold, the second telescopic rod 26 in the stretched state will drive the sliding block 25 to reset, and then the shielding strips 23 will be pulled to the inside of the storage slot 22.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogeological prospecting drilling device, comprising a support frame (1) and a drill rod (7), characterized in that, The drill rod (7) is movably connected to the outside of the support frame (1). A shearing assembly is provided on the drill rod (7). The shearing assembly includes multiple shearing plates (10) rotatably connected to the inside of the drill rod (7), a pulling plate (16) slidably provided on the outside of the drill rod (7), a locking unit and a transmission unit provided on the drill rod (7). Pulling the pulling plate (16) drives the multiple shearing plates (10) to unfold and shear the soil through the transmission unit. The locking unit locks the position of the pulling plate (16). A shielding strip (23) is installed on the outside of the shearing plate (10). The shielding strip (23) is movably connected to the drill rod (7). When the shearing plate (10) unfolds, it drives the shielding strip (23) to move into the borehole of the drill rod (7).

2. The hydrogeological prospecting drilling device according to claim 1, characterized in that, The upper end of the support frame (1) is equipped with a first driving device (4), and the output end of the first driving device (4) is equipped with a threaded rod (5). The threaded rod (5) is rotatably connected to the support frame (1). The inner side of the support frame (1) is symmetrically provided with guide grooves (3). The inner sides of the two guide grooves (3) are slidably provided with a movable plate (2). The movable plate (2) is threadedly connected to the threaded rod (5). The side of the movable plate (2) is equipped with a second driving device (6), and the drill rod (7) is installed on the output end of the second driving device (6).

3. The hydrogeological prospecting drilling device according to claim 1, characterized in that, The transmission unit includes a first annular groove (8) on the inner wall of the drill rod (7), a plurality of first rotating rods (9) are rotatably connected to the inner side of the first annular groove (8), the shearing plate (10) is installed on the outer side of the first rotating rods (9), a second annular groove (11) is provided on the inner side of the drill rod (7), a gear (12) is installed at the end of the first rotating rod (9) extending to the inner side of the second annular groove (11), and a rack (13) is rotatably connected to the inner side of the second annular groove (11), and the rack (13) meshes with the gear (12).

4. The hydrogeological prospecting drilling device according to claim 3, characterized in that, The drill rod (7) has a first sliding groove (14) on its inner side. A movable rod (15) is slidably arranged on the inner side of the first sliding groove (14). The bottom of the movable rod (15) is fixedly connected to the rack (13). The upper end of the movable rod (15) is fixedly connected to the pull plate (16). The pull plate (16) is slidably connected to the first sliding groove (14).

5. The hydrogeological prospecting drilling device according to claim 4, characterized in that, The locking unit includes a U-shaped plate (17) installed on the side of the pull plate (16), an opening groove (18) is provided on the inner side of the first sliding groove (14), a first telescopic rod (19) is installed on the inner wall of the opening groove (18), a movable block (20) is installed at the end of the first telescopic rod (19), a pull rod (21) is installed on the upper part of the movable block (20), and the pull rod (21) is movably connected to the drill rod (7).

6. The hydrogeological prospecting drilling device according to claim 5, characterized in that, The cross-section of the movable block (20) is trapezoidal, and the (29) is located on the movement trajectory of the U-shaped plate (17). The opening size of the groove on the upper part of the U-shaped plate (17) is adapted to the size of the movable block (20).

7. The hydrogeological prospecting drilling device according to claim 1, characterized in that, The drill rod (7) has multiple storage slots (22) on its inner side. The storage slots (22) are movably connected to the shielding strip (23). The storage slots (22) have a second sliding slot (24) on their inner side. A sliding block (25) is slidably arranged inside the second sliding slot (24). A second telescopic rod (26) is installed at the bottom of the sliding block (25). The end of the second telescopic rod (26) away from the sliding block (25) is fixedly connected to the inner wall of the second sliding slot (24). The side of the sliding block (25) is fixedly connected to the shielding strip (23).

8. The hydrogeological prospecting drilling device according to claim 1, characterized in that, The cross-section of the shear plate (10) on the side away from the shielding strip (23) is trapezoidal.

9. A hydrogeological prospecting drilling method, employing the hydrogeological prospecting drilling device described in claim 1, characterized in that, Includes the following steps: Step 1: Drive the drill rod (7) to move down and rotate through the support frame (1), and then insert the drill rod (7) into the soil. After the drill rod (7) is inserted into the soil, the soil enters the hole of the drill rod (7) for sampling. Step 2: Pull the pull plate (16). When the pull plate (16) moves, it drives multiple shear plates (10) to rotate. When the multiple shear plates (10) rotate, they shear the soil through their own sharp surfaces, causing the soil inside the drill rod (7) to separate from the ground soil. Step 3: When multiple shearing plates (10) shear the soil, multiple shielding strips (23) are deployed. After the shielding strips (23) are deployed, the drill rod (7) is in a near-sealed state. Then, the drill rod (7) is moved to the ground by the support frame (1).

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