A geotechnical engineering investigation drilling device

Abstract

The utility model discloses a kind of geotechnical engineering investigation drilling devices, belong to geotechnical investigation technical field, including chassis, anchor pile is fixed with annular array in chassis bottom side, rotating shaft with adjusting disc is equipped in anchor pile, rotating shaft is linked through connecting rod mechanism linkage sliding plate and the grip drill that can extend anchor pile, annular array is fixed with arc plate in chassis top side, top disc and large round baffle are equipped between arc plate, the lifting motor of top disc drives multiple screw rod synchronous rotation through gear set, screw rod drives lifting plate lifting that is equipped with drilling motor and drill rod through thread sleeve, lifting plate is slidably connected with the guide slot of arc plate through guide rod, the utility model can effectively improve the stability of device, significantly inhibit the problem of drilling trajectory deviation, and guarantee the accuracy of rock core sampling and in-situ test data, also enhance the whole machine operation stability and the adaptability of complex stratum, this has certain practicality.

Description

Technical Field

[0001] This utility model relates to a drilling device for geotechnical engineering exploration, specifically a drilling device for geotechnical engineering exploration, belonging to the field of geotechnical exploration technology. Background Technology

[0002] Geotechnical engineering exploration drilling equipment is a specialized device that uses mechanical or hydraulic drive to drill, sample, and conduct in-situ tests on surface and underground soil and rock layers. Its core function is to obtain key geological information such as stratigraphic structure, soil and rock physical and mechanical parameters, and groundwater distribution, providing fundamental data support for engineering design and construction. This device typically consists of a drilling rig power system, drill rods, drill bits, samplers, and measuring instruments, and is widely used in preliminary exploration in fields such as construction, transportation, and water conservancy to assess foundation stability, select appropriate foundation types, and mitigate geological risks. Currently, the chassis fixing method of geotechnical engineering exploration drilling equipment mainly relies on arrayed anchor piles inserted into the soil and rock layers for positioning. However, in practical applications, uneven distribution of the anchoring contact surface leads to large dispersion in gripping force, which can easily cause local slippage of the chassis due to differences in strata. This can cause the drilling trajectory to deviate from the design axis, directly affecting the accuracy of core sampling and the reliability of in-situ test data. Furthermore, drill pipe guiding mechanisms often employ a double-column symmetrical support structure, which lacks sufficient lateral stiffness and dynamic stability. Especially under high-frequency drilling vibrations or inclined formations, this can easily induce mechanical resonance, not only exacerbating drill bit wear but also reducing the overall machine's operational stability and hindering exploration efficiency in complex geological conditions. This invention effectively improves the stability of the device, significantly suppresses borehole trajectory deviation, ensures the accuracy of core sampling and in-situ testing data, and enhances the overall machine's operational stability and adaptability to complex formations, thus possessing considerable practical value. Utility Model Content

[0003] The purpose of this utility model is to provide a geotechnical engineering exploration drilling device to solve the above problems. It can effectively improve the stability of the device, significantly suppress the problem of borehole trajectory deviation, ensure the accuracy of core sampling and in-situ testing data, and enhance the overall machine operation stability and adaptability to complex strata. This has certain practical value.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a geotechnical engineering exploration drilling device includes a chassis. Four anchor piles are fixedly connected in a uniformly spaced annular array on the bottom side of the chassis. A partition plate is horizontally fixed to the inner wall of the bottom end of each anchor pile. A rotating shaft is rotatably connected to the top center of the partition plate via a bearing. The rotating shaft passes through the chassis and the anchor piles and maintains a rotatable connection with them. An adjusting plate is fixedly connected to the top end of the rotating shaft. Four fixing plates are fixedly connected vertically at uniform intervals along a section of the rotating shaft inside the anchor piles. Four interlocking grooves are rotatably formed vertically at uniform intervals on the inner wall of each anchor pile. The fixing plates and the corresponding interlocking grooves are aligned with the same horizontal plane. The fitting groove is set at a flat height. A pin slot is provided on the middle part of the side away from the rotation axis of the fitting groove, which is connected to the outside. A first fixed shaft is fixedly connected to the top side of the fixed plate. A connecting shaft is rotatably connected to the middle section of the first fixed shaft. A second fixed shaft is rotatably connected through the end of the connecting shaft away from the first fixed shaft. A fixed plate is fixedly connected to the bottom end of the second fixed shaft. A sliding plate is fixedly connected to the side of the fixed plate away from the rotation axis. A gripping drill is fixedly connected to the middle part of one side of the sliding plate. The gripping drill passes through the fitting groove and is slidably connected to the pin slot. Guide shafts are symmetrically fixed to the inner wall of the fitting groove. The guide shafts and the sliding plate are slidably connected through the groove.

[0005] Preferably, a drilling hole is provided through the middle of the chassis, and four arc-shaped plates are fixedly connected in a uniformly spaced annular array on the top side of the chassis. Guide grooves are provided through the side walls of the arc-shaped plates, and connecting plates are fixedly connected to the inner top wall of the arc-shaped plates. A top plate is fixedly connected to the connecting plates together.

[0006] Preferably, a lifting motor is fixedly installed in the middle of the top side of the top plate. The output end of the lifting motor passes through the top plate and is connected to a drive shaft through a coupling. The bottom end of the drive shaft is rotatably connected to a large circular partition through a bearing. The outer ring of the large circular partition is fixedly connected to the inner wall of the arc plate.

[0007] Preferably, a drive gear is fixedly connected to the middle section of the drive shaft, and four driven gears are evenly meshed on the outer ring of the drive gear. A lead screw is fixedly connected through the middle of the driven gear, and the lead screw passes through a large circular partition and is rotatably connected to the large circular partition.

[0008] Preferably, the portion of the lead screw located on the bottom side of the large circular partition is a threaded section. The bottom end of the lead screw is rotatably connected to the chassis via a bearing, and the top end of the lead screw is rotatably connected to the bottom side of the top plate via a bearing. Small circular partitions are symmetrically fixedly connected to the threaded section of the lead screw, and threaded sleeves are threadedly connected to the threaded section of the lead screw located between the small circular partitions.

[0009] Preferably, a lifting plate is fixedly connected to the outer wall of the middle section of the threaded sleeve, a drilling motor is fixedly installed on the middle of the top side of the lifting plate, the output end of the drilling motor passes through the lifting plate and is connected to a drill rod through a coupling, a spiral auger is fixed on the drill rod, and a drill bit is fixed at the bottom end.

[0010] Preferably, the outer ring of the lifting plate is fixedly connected with four guide rods in a uniformly spaced annular array. The ends of the guide rods away from the lifting plate are slidably connected to the guide grooves, and the ends of the guide rods away from the lifting plate are fixedly connected to limit blocks.

[0011] The beneficial effects of this invention are as follows: By setting up anchor piles and their internal rotating shaft, fixed disc, sliding plate, and gripping drill, the rotating shaft drives the fixed disc to rotate under the drive of the adjusting disc. Through the linkage between the connecting shaft and the second fixed shaft, the sliding plate slides outward along the guide shaft, thereby inserting the gripping drill into the soil from the pin slot, forming multi-point anchoring and significantly improving the stability of the drilling device under complex geological conditions. Simultaneously, the lifting motor at the top of the chassis drives the lead screw to rotate through the meshing of the active and driven gears, causing the threaded sleeve and lifting plate to move up and down, thereby controlling the precise lifting and lowering of the drill rod. Combined with the limiting effect of the guide rod and guide groove, this ensures the efficiency and verticality of the drilling process. This device integrates anchoring adjustment and automated drilling functions, and has the advantages of compact structure, convenient operation, and strong adaptability, effectively improving the efficiency and safety of geotechnical engineering investigation. Attached Figure Description

[0012] Figure 1 This is a front view structural diagram of the present utility model;

[0013] Figure 2 This is a front view structural diagram of the drill rod in this utility model;

[0014] Figure 3 This is a front view structural diagram of the rotating shaft in this utility model;

[0015] Figure 4 This is a top view of the fixed disk structure in this utility model;

[0016] Figure 5 This is a top view of the sliding plate in this utility model.

[0017] Figure 6 This is a top view of the structure of this utility model;

[0018] Figure 7 This is a bottom view of the top plate structure in this utility model;

[0019] Figure 8 This is a top view of the guide rod in this utility model.

[0020] In the diagram: 1. Chassis, 2. Anchor pile, 3. Divider plate, 4. Rotating shaft, 5. Adjusting plate, 6. Fixed plate, 7. Fitting groove, 8. Pin groove, 9. First fixed shaft, 10. Connecting shaft, 11. Second fixed shaft, 12. Fixed plate, 13. Sliding plate, 14. Grip drill, 15. Guide shaft, 16. Drill hole, 17. Arc plate, 18. Guide groove, 19. Connecting plate, 20. Top plate, 21. Lifting motor, 22. Drive shaft, 23. Drive gear, 24. Large circular partition, 25. Driven gear, 26. Lead screw, 27. Small circular partition, 28. Threaded sleeve, 29. Lifting plate, 30. Drilling motor, 31. Drill rod, 32. Guide rod, 33. Limiting block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-8As shown, a geotechnical engineering exploration drilling device includes a chassis 1. Four anchor piles 2 are fixedly connected in a uniformly spaced annular array on the bottom side of the chassis 1. A partition plate 3 is horizontally fixed to the inner wall of the bottom end of each anchor pile 2. A rotating shaft 4 is rotatably connected to the top center of the partition plate 3 via a bearing. The rotating shaft 4 passes through the chassis 1 and the anchor piles 2 and remains rotatably connected to them. An adjusting plate 5 is fixedly connected to the top of the rotating shaft 4. Four fixing plates 6 are fixedly connected vertically at uniform intervals along a section of the rotating shaft 4 inside the anchor piles 2. Four interlocking grooves 7 are rotatably formed vertically at uniform intervals on the inner wall of each anchor pile 2. The fixing plates 6 and the corresponding interlocking grooves 7 are set at the same horizontal height. A pin groove 8 is formed on the middle of the side of the interlocking groove 7 away from the rotating shaft 4, communicating with the outside. A first fixing shaft 9 is fixedly connected to the top side of the fixing plate 6. A connecting rod is rotatably connected to the middle section of the first fixing shaft 9. A connecting shaft 10 is connected to a second fixed shaft 11 through a through-rotational connection at one end of the connecting shaft 10 away from the first fixed shaft 9. A fixed plate 12 is fixedly connected to the bottom end of the second fixed shaft 11. A sliding plate 13 is fixedly connected to the side of the fixed plate 12 away from the rotating shaft 4. A gripping drill 14 is fixedly connected to the middle of one side of the sliding plate 13. The gripping drill 14 passes through the fitting groove 7 and is slidably connected to the pin groove 8. A guide shaft 15 is symmetrically fixed to the inner wall of the fitting groove 7. The guide shaft 15 and the sliding plate 13 are connected through a through-rotational sliding connection. When the anchor pile 2 is inserted into the soil, the rotating shaft 4 is rotated by rotating the adjusting plate 5. The fixed plate 6 rotates synchronously with the rotating shaft 4. The connecting shaft 10 and the second fixed shaft 11 push the sliding plate 13 to slide outward along the guide shaft 15, so that the gripping drill 14 passes out of the fitting groove 7 and inserts into the soil at the corresponding depth of the pin groove 8, thus completing the fixing of the anchor pile 2.

[0023] As a technical optimization of this utility model, a drilling hole 16 is provided through the middle of the chassis 1, and four arc-shaped plates 17 are fixedly connected in a uniformly spaced annular array on the top side of the chassis 1. A guide groove 18 is provided through the side wall of the arc-shaped plate 17, and a connecting plate 19 is fixedly connected to the top inner wall of the arc-shaped plate 17. A top plate 20 is fixedly connected to the connecting plates 19. The arc-shaped plates 17 are used to fix the connecting plates 19 and the large circular partition 24.

[0024] As a technical optimization of this utility model, a lifting motor 21 is fixedly installed in the middle of the top side of the top plate 20. The output end of the lifting motor 21 passes through the top plate 20 and is connected to a transmission shaft 22 through a coupling. The bottom end of the transmission shaft 22 is rotatably connected to a large circular partition 24 through a bearing. The outer ring of the large circular partition 24 is fixedly connected to the inner wall of the arc plate 17. The lifting motor 21 can drive the transmission shaft 22 to rotate through its output end, and the transmission shaft 22 can drive the drive gear 23 to rotate.

[0025] As a technical optimization of this utility model, a drive gear 23 is fixedly connected to the middle section of the transmission shaft 22. Four driven gears 25 are evenly meshed on the outer ring of the drive gear 23. A lead screw 26 is fixedly connected through the middle of the driven gear 25. The lead screw 26 passes through the large circular partition 24 and is rotatably connected to the large circular partition 24. The drive gear 23 can mesh with the four sets of driven gears 25 to rotate synchronously, thereby driving the lead screw 26 to rotate.

[0026] As a technical optimization of this utility model, the portion of the lead screw 26 located on the bottom side of the large circular partition 24 is configured as a threaded section. The bottom end of the lead screw 26 is rotatably connected to the chassis 1 via a bearing, and the top end of the lead screw 26 is rotatably connected to the bottom side of the top plate 20 via a bearing. Small circular partitions 27 are symmetrically fixedly connected to the threaded section of the lead screw 26 above and below, and threaded sleeves 28 are threadedly connected to the threaded section of the lead screw 26 located between the small circular partitions 27.

[0027] As a technical optimization of this utility model, a lifting plate 29 is fixedly connected to the outer wall of the middle section of the threaded sleeve 28. A drilling motor 30 is fixedly installed on the middle of the top side of the lifting plate 29. The output end of the drilling motor 30 passes through the lifting plate 29 and is connected to the drill rod 31 through a coupling. A spiral auger is fixed on the drill rod 31, and a drill bit is fixed at the bottom end. The threaded section of the screw 26 cooperates with the threaded sleeve 28, which can drive the lifting plate 29 to move vertically up and down in the guide groove 18 along the guide rod 32. The drilling motor 30 can drive the drill rod 31 and the spiral auger to rotate. After the drill bit contacts the ground, it moves down with the lifting plate 29 to carry out drilling operations.

[0028] As a technical optimization of this utility model, four guide rods 32 are fixedly connected in a uniformly spaced annular array on the outer ring of the lifting plate 29. The ends of the guide rods 32 away from the lifting plate 29 are slidably connected to the guide groove 18. The ends of the guide rods 32 away from the lifting plate 29 are fixedly connected to the limit block 33. The cooperation between the guide groove 18 and the guide rods 32 in sliding up and down can improve the stability of drilling.

[0029] As a technical optimization of this utility model, in use, the chassis 1 is first placed in the exploration area, and the anchor pile 2 is inserted into the soil. The rotating adjustment plate 5 drives the rotating shaft 4 to rotate, and the fixed plate 6 rotates synchronously with the rotating shaft 4. The connecting shaft 10 and the second fixed shaft 11 push the sliding plate 13 to slide outward along the guide shaft 15, so that the gripping drill 14 passes through the fitting groove 7 and inserts into the soil at the corresponding depth of the pin groove 8, thus completing the fixing of the anchor pile 2. Then, the lifting motor 21 is started, and its output end drives the transmission shaft 22 to drive the drive gear 23 to rotate. The drive gear 23 meshes with four sets of driven gears 25 to rotate synchronously, thereby driving the lead screw 26 to rotate. The threaded section of the lead screw 26 cooperates with the threaded sleeve 28, driving the lifting plate 29 to rise and fall vertically in the guide groove 18 along the guide rod 32. At the same time, the drilling motor 30 is started, driving the drill rod 31 and the spiral auger to rotate. After the drill bit contacts the ground, it moves down with the lifting plate 29 to carry out drilling operations. Once the target depth is reached, the lifting motor 21 reverses, the lead screw 26 drives the lifting plate 29 to rise and reset, and the drill rod 31 retracts. After the operation is completed, the adjusting disc 5 rotates in the opposite direction, the gripping drill 14 retracts into the anchor pile 2, and the device can be easily moved. Through the coordinated control of the multi-stage gripping structure of the anchor pile 2 and the lifting system, this device can be quickly and stably installed in complex geological conditions and achieve efficient drilling, greatly improving the reliability and efficiency of exploration operations.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drilling device for geotechnical engineering exploration, comprising a chassis (1), characterized in that: Four anchor piles (2) are fixedly connected to the bottom side of the chassis (1) in a uniformly spaced annular array. A partition plate (3) is horizontally fixed to the inner wall of the bottom end of the anchor pile (2). A rotating shaft (4) is rotatably connected to the top center of the partition plate (3) via a bearing. The rotating shaft (4) passes through the chassis (1) and the anchor pile (2) and is rotatably connected to them. An adjusting plate (5) is fixedly connected to the top of the rotating shaft (4). Four fixed plates (6) are fixedly connected to a section of the rotating shaft (4) inside the anchor pile (2) at uniform intervals. Four fitting grooves (7) are rotatably opened at uniform intervals on the inner wall of the anchor pile (2). The fixed plates (6) and the corresponding fitting grooves (7) are set at the same horizontal height. The middle part of the side of the fitting groove (7) away from the rotating shaft (4) is connected to the outside. There is a pin groove (8). The top side of the fixed plate (6) is fixedly connected to a first fixed shaft (9). The middle section of the first fixed shaft (9) is rotatably connected to a connecting shaft (10). The end of the connecting shaft (10) away from the first fixed shaft (9) is rotatably connected to a second fixed shaft (11). The bottom end of the second fixed shaft (11) is fixedly connected to a fixed plate (12). The side of the fixed plate (12) away from the rotating shaft (4) is fixedly connected to a sliding plate (13). The middle part of one side of the sliding plate (13) is fixedly connected to a gripping drill (14). The gripping drill (14) passes through the fitting groove (7) and is slidably connected to the pin groove (8). The inner wall of the fitting groove (7) is symmetrically fixed with guide shafts (15). The guide shafts (15) and the sliding plate (13) are slidably connected.

2. The geotechnical engineering exploration drilling device according to claim 1, characterized in that: The chassis (1) has a through-hole (16) in the middle. Four arc-shaped plates (17) are fixedly connected in a uniformly spaced annular array on the top side of the chassis (1). The side wall of the arc-shaped plates (17) has a through-hole (18). The top inner wall of the arc-shaped plates (17) is fixedly connected to a connecting plate (19). The connecting plates (19) are fixedly connected to a top plate (20).

3. The geotechnical engineering exploration drilling device according to claim 2, characterized in that: A lifting motor (21) is fixedly installed on the top side of the top plate (20). The output end of the lifting motor (21) passes through the top plate (20) and is connected to a transmission shaft (22) through a coupling. The bottom end of the transmission shaft (22) is rotatably connected to a large circular partition (24) through a bearing. The outer ring of the large circular partition (24) is fixedly connected to the inner wall of the arc plate (17).

4. The geotechnical engineering exploration drilling device according to claim 3, characterized in that: The drive shaft (22) is fixedly connected to the middle section of the drive shaft (23). The outer ring of the drive shaft (23) is evenly meshed with four driven gears (25). The middle of the driven gears (25) is fixedly connected to a lead screw (26). The lead screw (26) passes through the large circular partition (24) and is rotatably connected to the large circular partition (24).

5. The geotechnical engineering exploration drilling device according to claim 4, characterized in that: The portion of the lead screw (26) located on the bottom side of the large circular partition (24) is configured as a threaded section. The bottom end of the lead screw (26) is rotatably connected to the chassis (1) via a bearing. The top end of the lead screw (26) is rotatably connected to the bottom side of the top plate (20) via a bearing. Small circular partitions (27) are symmetrically fixedly connected to the threaded section of the lead screw (26) above and below. Threaded sleeves (28) are threadedly connected to the threaded section of the lead screw (26) located between the small circular partitions (27).

6. The geotechnical engineering exploration drilling device according to claim 5, characterized in that: The middle section of the threaded sleeve (28) is fixedly connected to a lifting plate (29). A drilling motor (30) is fixedly installed on the top side of the lifting plate (29). The output end of the drilling motor (30) passes through the lifting plate (29) and is connected to a drill rod (31) through a coupling. A spiral auger is fixed on the drill rod (31), and a drill bit is fixed at the bottom.

7. The geotechnical engineering exploration drilling device according to claim 6, characterized in that: The outer ring of the lifting plate (29) is fixedly connected with four guide rods (32) in a uniformly spaced annular array. The end of the guide rod (32) away from the lifting plate (29) is slidably connected to the guide groove (18) and the end of the guide rod (32) away from the lifting plate (29) is fixedly connected to a limit block (33).

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