A mechanical borehole geophysical prospecting aid

Abstract

The utility model provides a kind of mechanical borehole geophysical prospecting auxiliary device, effectively solve the existing technology and the problem that probe is prone to eccentric tilt, prone to overturning or jam, free to drop speed is difficult to control;Its solution technical scheme is, including hole, hole top is equipped with driving assembly, the outer wall of driving assembly is connected with horizontal shift subassembly, the both ends of horizontal shift subassembly have fixed component, horizontal shift subassembly includes No. The bottom of one mounting seat, one mounting plate, idler and connecting plate, the outer wall of horizontal shift subassembly is connected with the inner wall of connecting plate, the bottom of connecting plate has pulley assembly, the bottom of pulley assembly has probe, the top of one mounting plate is fixedly connected to the one side of the bottom of one mounting seat, the inner wall of one mounting plate is rotatably connected to the both ends of idler, two idlers are equipped in the inner wall top of one mounting plate, another two idlers are equipped in the inner wall bottom of one mounting plate, two one mounting plates and four idlers are symmetrically equipped in the both sides of the bottom of one mounting seat.

Description

Technical Field

[0001] This utility model relates to the field of borehole geophysical exploration technology, and in particular to a mechanical borehole geophysical exploration auxiliary device. Background Technology

[0002] In fields such as geological exploration, mineral resource exploration, hydrogeological survey, geotechnical engineering testing, and geological disaster early warning, borehole geophysical exploration (also known as "well geophysical exploration") is an important in-situ detection method. It is widely used to obtain physical field information of the rock mass surrounding the borehole, such as resistivity, spontaneous potential, acoustic velocity, magnetic susceptibility, and gamma radiation intensity. By sending sensor probes into the borehole and collecting data at a predetermined depth, it is possible to effectively infer underground structures, ore body distribution, fracture development, aquifer location, and surrounding rock stability, providing key basis for resource evaluation and engineering design.

[0003] Currently, common borehole geophysical exploration methods mainly include electrical logging, magnetic logging, sonic logging, and gamma logging. The core of these methods is to send a sensor probe into the borehole and collect data at a predetermined depth. However, the centering, attitude stability, and coupling state of the probe with the borehole wall directly affect the accuracy of the measurement data. Especially in loose formations, fractured zones, large-diameter boreholes, or inclined boreholes, the probe is prone to eccentricity, tilting, or even flipping, leading to signal attenuation, data distortion, or poor measurement repeatability. Currently, common methods for lowering borehole probes often involve gravity free fall or wire rope traction, supplemented by a simple spring centerer for centering. For example, the downhole imaging instrument lowering device described in document CN202020115523.1 reflects the existence of such conventional lowering methods. However, these methods may have the following problems: in inclined boreholes, curved sections, or loose formations, the probe is prone to sticking to one side of the borehole wall, causing severe eccentricity and resulting in asymmetrical reception of acoustic or electromagnetic signals; in fractured zones or gravel layers, the probe is prone to flipping or getting stuck, affecting data continuity; in addition, free fall may be difficult to control the speed, easily generating impacts that can damage the probe or cause depth measurement errors.

[0004] Therefore, it is necessary to provide a new mechanical borehole geophysical exploration auxiliary device to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a mechanical borehole geophysical exploration auxiliary device, which effectively solves the problems of probe eccentricity and tilting, poor coupling with the borehole wall, probe flipping or getting stuck in fractured zones or pebble layers, difficulty in controlling the free-fall speed, and easy generation of impact and depth measurement errors.

[0006] The technical solution includes a hole, a driving component at the top of the hole, a transverse moving component threadedly connected to the outer wall of the driving component, and fixing components at both ends of the transverse moving component. The transverse moving component includes a first mounting base, a first mounting plate, rollers, and a connecting plate. The outer wall of the transverse moving component is threadedly connected to the inner wall of the connecting plate. A pulley assembly is fixedly connected to the bottom of the connecting plate, and a probe is fixedly connected to the bottom of the pulley assembly. The top of the connecting plate is fixedly connected to the bottom of the first mounting base. One side of the bottom of the first mounting base is fixedly connected to the top of the first mounting plate. The inner wall of the first mounting plate is rotatably connected to both ends of the rollers. Four rollers are arrayed on the inner wall of the first mounting plate, two rollers are located at the top of the inner wall of the first mounting plate, and the other two rollers are located at the bottom of the inner wall of the first mounting plate. All four rollers are slidably connected to both sides of the transverse moving component. The two first mounting plates and the four rollers are symmetrically arranged on both sides of the bottom of the first mounting base.

[0007] Preferably, the drive assembly includes a mounting bracket, a base plate, a first motor, a threaded rod, a guide rod, and a mounting ring. The first motor is located at the top of the hole, and the bottom of the first motor is fixedly connected to the top of the base plate. The output end of the first motor is fixedly connected to one end of the threaded rod. The outer wall of one end of the threaded rod is rotatably connected to the inner wall of the mounting ring. Both ends of the mounting ring are fixedly connected to the two ends of the inner wall of the mounting bracket. Two mounting rings and the mounting bracket are symmetrically arranged at both ends of the threaded rod. One side of the mounting bracket is fixedly connected to one side of the base plate. The inner wall of one side of the mounting bracket is fixedly connected to the outer wall of the guide rod. Two guide rods are symmetrically arranged on both sides of the mounting bracket. The outer wall of the threaded rod is threadedly connected to the inner wall of the connecting plate, and the inner wall of the roller is slidably connected to the outer wall of the guide rod.

[0008] Preferably, the pulley assembly includes a second mounting base, a second motor, a rotating shaft, and a pulley. The bottom of the connecting plate is fixedly connected to the top of the second mounting base. One side of the second mounting base is fixedly connected to one end of the second motor. The output end of the second motor is fixedly connected to one end of the rotating shaft. The other end of the rotating shaft passes through the bottom of the second mounting base and extends therefrom. The outer wall of the rotating shaft is fixedly connected to the inner wall of the pulley. The pulley is located on the inner wall of the second mounting base.

[0009] Preferably, a sliding cable is fixedly connected to the inner wall of the pulley, one end of the sliding cable is fixedly connected to an installation structure, and a probe is fixedly installed at the bottom of the installation structure.

[0010] Preferably, the fixing assembly includes a second mounting plate, a sliding groove, a slider, a lead screw, a throttle, and a clamping plate. The bottom of the mounting frame is fixedly connected to the top of the second mounting plate. A sliding groove is provided in the middle of the second mounting plate. The inner wall of the sliding groove is slidably connected to both sides of the slider. The inner wall of the slider is threadedly connected to the outer wall of the lead screw. One end of the lead screw is fixedly connected to one side of the throttle, and the other end of the lead screw is fixedly connected to one side of the clamping plate.

[0011] Preferably, the clamping plate has multiple mounting slots arranged at equal intervals on the side facing the hole, each mounting slot has a spring fixedly connected to its bottom inner wall, each spring has a clamping post fixedly connected to its top, and each clamping post has a rubber pad fixedly connected to its top.

[0012] Compared with related technologies, the mechanical borehole geophysical exploration auxiliary device provided by this utility model has the following beneficial effects: By symmetrically arranging four sets of rollers (two on the top and two on the bottom) on the No. 1 mounting plate, a "double-sided clamping guide structure" is formed. The rollers slide on both sides of the borehole wall, automatically constraining the probe to be located near the central axis of the borehole, effectively preventing the probe from being eccentric, tilting, or flipping. It is especially suitable for inclined drilling or curved borehole sections, ensuring the stability of the probe posture and improving the accuracy and repeatability of geophysical signal acquisition. The outer wall of the transverse component is threadedly connected to the inner wall of the connecting plate. In conjunction with the top drive component, when the drive component is rotated, it drives the transverse component to rotate, and then pushes the connecting plate and its lower structure to move vertically at a uniform speed through the threaded pair, realizing stepless speed regulation, smooth lowering and precise positioning of the probe, avoiding impact, jamming or data loss caused by free fall. Attached Figure Description

[0013] Figure 1 A schematic diagram of a preferred embodiment of the mechanical borehole geophysical exploration auxiliary device provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the transverse component; Figure 3 for Figure 1 The diagram shows the structure of the pulley assembly. Figure 4 for Figure 1 The diagram shows the structure of the clamping assembly. Figure 5 for Figure 1 The diagram shows the structure of the clamp assembly. Numbered in the diagram: 1. Hole; 2. Mounting bracket; 3. Base plate; 4. Motor 1; 5. Threaded rod; 6. Guide rod; 7. Mounting ring; 8. Mounting seat 1; 9. Mounting plate 1; 10. Roller; 11. Connecting plate; 12. Mounting seat 2; 13. Motor 2; 14. Shaft; 15. Pulley; 16. Mounting plate 2; 17. Slide groove; 18. Slider; 19. Lead screw; 20. Throttle; 21. Clamping plate; 22. Mounting groove; 23. Spring; 24. Clamping post. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0015] Depend on Figures 1 to 5The present invention includes a hole 1, a driving assembly at the top of the hole 1, a transverse moving assembly threadedly connected to the outer wall of the driving assembly, and fixing assemblies at both ends of the transverse moving assembly. The transverse moving assembly includes a first mounting base 8, a first mounting plate 9, a roller 10, and a connecting plate 11. The outer wall of the transverse moving assembly is threadedly connected to the inner wall of the connecting plate 11. A pulley 15 assembly is fixedly connected to the bottom of the connecting plate 11, and a probe is fixedly connected to the bottom of the pulley 15 assembly. The top of the connecting plate 11 is fixedly connected to the bottom of the first mounting base 8, and one side of the bottom of the first mounting base 8 is fixedly connected to the top of the first mounting plate 9. The inner wall of the mounting plate 9 is rotatably connected to both ends of the rollers 10. Four rollers 10 are arrayed on the inner wall of the first mounting plate 9. Two rollers 10 are located at the top of the inner wall of the first mounting plate 9, and the other two rollers 10 are located at the bottom of the inner wall of the first mounting plate 9. All four rollers 10 are slidably connected to both sides of the transverse moving assembly. The two first mounting plates 9 and the four rollers 10 are symmetrically arranged on both sides of the bottom of the first mounting base 8. The driving assembly includes a mounting bracket 2, a base plate 3, a motor 4, a threaded rod 5, a guide rod 6, and a mounting ring 7. The top of the hole 1 is equipped with the motor 4, and the bottom of the motor 4 is fixedly connected to the top of the base plate 3. The output end of motor 4 is fixedly connected to one end of threaded rod 5. The outer wall of one end of threaded rod 5 is rotatably connected to the inner wall of mounting ring 7. Both ends of mounting ring 7 are fixedly connected to the inner ends of mounting bracket 2. Two mounting rings 7 and mounting bracket 2 are symmetrically arranged at both ends of threaded rod 5. One side of mounting bracket 2 is fixedly connected to one side of base plate 3. The inner wall of one side of mounting bracket 2 is fixedly connected to the outer wall of guide rod 6. Two guide rods 6 are symmetrically arranged on both sides of mounting bracket 2. The outer wall of threaded rod 5 is threadedly connected to the inner wall of connecting plate 11. The inner wall of roller 10 is slidably connected to the outer wall of guide rod 6. The pulley 15 assembly includes two... Mounting base 12, motor 13, shaft 14, and pulley 15 are connected together. The bottom of the connecting plate 11 is fixedly connected to the top of mounting base 12. One side of mounting base 12 is fixedly connected to one end of motor 13. The output end of motor 13 is fixedly connected to one end of shaft 14. The other end of shaft 14 passes through the bottom of mounting base 12 and extends outward. The outer wall of shaft 14 is fixedly connected to the inner wall of pulley 15. Pulley 15 is located on the inner wall of mounting base 12. A sliding cable is fixedly connected to the inner wall of pulley 15. One end of the sliding cable is fixedly connected to an installation structure. A probe is fixedly installed at the bottom of the installation structure. It should be noted that the spatial carrier for borehole detection operations is a geological borehole; the drive assembly (mounting frame 2, base plate 3, motor 4, threaded rod 5, guide rod 6, and mounting ring 7) provides power, and the motor 4 drives the threaded rod 5 to rotate, thereby enabling the connecting plate 11 (and thus the entire lower structure) to move up and down along the guide rod 6; the lateral movement assembly (mounting seat 8, mounting plate 9, roller 10, and connecting plate 11) supports and connects the upper and lower structures, and the roller 10 slides on the guide rod 6 to ensure smooth operation; mounting seat 8 and mounting plate 9 form a frame structure; the pulley 15 assembly (mounting seat 12, motor 13, shaft 14, and pulley 15) is driven by motor 13 to rotate the pulley 15, raising and lowering the cable, thereby controlling the vertical lowering or retrieval of the probe in the borehole; the actual detection elements of the probe (such as accelerometers, magnetometers, etc.) are installed at the end of the cable; In the specific implementation process, refer to Figure 4-5 As shown, this utility model provides a mechanical borehole geophysical exploration auxiliary device. The fixing components include a second mounting plate 16, a sliding groove 17, a slider 18, a lead screw 19, a throttle 20, and a clamping plate 21. The bottom of the mounting frame 2 is fixedly connected to the top of the second mounting plate 16. A sliding groove 17 is opened in the middle of the second mounting plate 16. The inner wall of the sliding groove 17 is slidably connected to both sides of the slider 18. The inner wall of the slider 18 is threadedly connected to the outer wall of the lead screw 19. One end of the lead screw 19 is fixedly connected to one side of the throttle 20, and the other end of the lead screw 19 is fixedly connected to one side of the clamping plate 21. Multiple mounting slots 22 are arrayed at equal intervals on the side of the clamping plate 21 facing the borehole 1. Springs 23 are fixedly connected to the bottom of the inner wall of each of the multiple mounting slots 22. Clamping posts 24 are fixedly connected to the top of each of the multiple springs 23. Rubber pads are fixedly connected to the top of each of the multiple clamping posts 24. It should be noted that the second mounting plate 16 is the mounting base plate, fixed to the bottom of the mounting frame 2, and supports components such as the slide groove 17 and the lead screw 19. The slide groove 17 is a guide groove in the middle of the second mounting plate 16, used to guide the linear movement of the slider 18. The slider 18 slides in the slide groove 17, and the clamping plate 21 is connected to the slider 18 and moves with it to adjust the rise and fall of the clamping plate 21. The internal thread of the slider 18 is connected to the lead screw 19. The throttle 20 is used to manually rotate the operating handle of the lead screw 19 to adjust the distance between the clamping plate 21 and the hole 1, used to clamp the hole 1. The mounting groove 22, spring 23, clamping post 24 and rubber pad constitute an elastic adaptive clamping structure to adapt to holes of different diameters, and to prevent slippage and reduce shock. The working principle of this utility model is as follows: First, the vertical position of the slider 18 is moved by the lead screw 19, and the slider 18 slides in the groove 17. The handles 20 on both sides are rotated, and the handles 20 drive the lead screw 19 to rotate, pushing the clamping plate 21 to move towards the edge of the hole 1. When the clamping plate 21 contacts the hole wall, the handles 20 are rotated again to apply clamping force. Multiple clamping columns 24 are elastically compressed under the action of spring 23, and the top rubber pad is attached to the surface of the hole to achieve multi-point uniform force, completing the symmetrical clamping on the left and right sides, ensuring that the device is firmly fixed to the hole. The motor 4 is started, and its output end drives the threaded rod 5 to rotate. The threaded rod 5 is threaded with the inner wall of the connecting plate 11 to generate axial thrust. The connecting plate 11 drives the entire transverse moving assembly, including the pulley 15 assembly and the probe, to move up and down along the guide rod 6. The four rollers 10 The guide rod 6 slides on the outer wall, providing guidance and support to prevent deflection. When adjusted to the appropriate position, the pulley 15 assembly is positioned directly above the borehole opening, ready to lower the probe. The motor 13 is started, and its output drives the pulley 15 to rotate through the shaft 14. The pulley 15 releases or retracts the cable wound around it, and the probe connected to the end of the cable is slowly lowered into the borehole 1. According to the geophysical exploration requirements, the motor 13 is controlled to rotate in both directions to achieve precise positioning and reciprocating movement of the probe inside the borehole. The probe collects geological data such as vibration and electromagnetic signals in real time and transmits them to the ground system via wired or wireless means. The motor 13 is then controlled to retract the cable, lifting the probe back to the borehole opening. The motor 13 is then turned off, and the handle 20 is rotated in the opposite direction to loosen the clamp 21, releasing the clamp on the borehole opening. The device is then removed for maintenance or to be moved to the next work site.

[0016] This mechanical borehole geophysical exploration auxiliary device has the following advantages: 1. The clamping plate 21 is driven to move by the transmission mechanism (screw 19, slider 18, throttle 20) of screw 19 and slider 18. The manual operation is simple and the clamping force is controllable. Multiple clamping columns 24 with springs 23 are set on the clamping plate 21. Together with the top rubber pad, they form an elastic adaptive clamping structure, which can adapt to borehole walls of different diameters, unevenness or slight inclination (such as concrete, steel casing, etc.), realize multi-point uniform force, avoid stress concentration, and the rubber pad increases friction, anti-slip and shock absorption. 2. Motor 14 drives the threaded rod 5, which moves the entire transverse assembly laterally to achieve coarse adjustment of the transverse position of the probe inlet. Motor 213 drives the pulley 15 to raise and lower the cable, which achieves fine adjustment of the probe depth in the hole and independent lowering. The two-stage adjustment mechanism separates the "equipment positioning" and "probe operation" functions, so they do not interfere with each other, improve control accuracy, avoid the operational limitations caused by the linkage between the probe and the bracket in the traditional single lifting system, and improve detection flexibility and data accuracy. 3. Two symmetrical guide rods 6 are set up, and four rollers 10 (two on the top and two on the bottom) slide on the guide rods 6. The rollers 10 are installed on the inner wall of the first mounting plate 9 to form a stable four-point guide structure, which effectively prevents the connecting plate 11 from rotating or swaying during the threaded transmission process, and ensures good linearity and smooth operation during the lifting process. 4. The probe is suspended below the pulley 15 assembly by a cable and its lifting and lowering are independently controlled by motor 13. The entire lowering process is free from mechanical interference, allowing the probe to freely enter the borehole without friction or scratching against the borehole opening. It can achieve slow, uniform, and reversible reciprocating motion, meeting the needs of various geophysical exploration processes (such as layered scanning and fixed-point measurement), protecting high-sensitivity probes (such as seismic detectors and magnetometers), reducing external interference, and improving the signal-to-noise ratio and reliability of the acquired data.

Claims

1. A mechanical borehole geophysical exploration auxiliary device, characterized in that, The device includes a hole (1), a drive assembly at the top of the hole (1), a transverse moving assembly threadedly connected to the outer wall of the drive assembly, and fixed assemblies at both ends of the transverse moving assembly. The transverse moving assembly includes a first mounting base (8), a first mounting plate (9), a roller (10), and a connecting plate (11). The outer wall of the transverse moving assembly is threadedly connected to the inner wall of the connecting plate (11). A pulley (15) assembly is fixedly connected to the bottom of the connecting plate (11), and a probe is fixedly connected to the bottom of the pulley (15) assembly. The top of the connecting plate (11) is fixedly connected to the bottom of the first mounting base (8). The bottom side of the first mounting base (8) is fixedly connected to the top of the first mounting plate (9). The inner wall of the first mounting plate (9) is rotatably connected to both ends of the rollers (10). The four rollers (10) are arrayed on the inner wall of the first mounting plate (9). Two rollers (10) are located at the top of the inner wall of the first mounting plate (9), and the other two rollers (10) are located at the bottom of the inner wall of the first mounting plate (9). The four rollers (10) are slidably connected to both sides of the transverse component. The two first mounting plates (9) and the four rollers (10) are symmetrically arranged on both sides of the bottom of the first mounting base (8).

2. The mechanical borehole geophysical exploration auxiliary device according to claim 1, characterized in that, The drive assembly includes a mounting bracket (2), a base plate (3), a motor (4), a threaded rod (5), a guide rod (6), and a mounting ring (7). The top of the hole (1) is provided with the motor (4). The bottom of the motor (4) is fixedly connected to the top of the base plate (3). The output end of the motor (4) is fixedly connected to one end of the threaded rod (5). The outer wall of one end of the threaded rod (5) is rotatably connected to the inner wall of the mounting ring (7). Both ends of the mounting ring (7) are fixedly connected to the mounting bracket (2). 2) The two mounting rings (7) and the mounting bracket (2) are symmetrically arranged at both ends of the threaded rod (5). One side of the mounting bracket (2) is fixedly connected to one side of the base plate (3). The inner wall of one side of the mounting bracket (2) is fixedly connected to the outer wall of the guide rod (6). The two guide rods (6) are symmetrically arranged on both sides of the mounting bracket (2). The outer wall of the threaded rod (5) is threadedly connected to the inner wall of the connecting plate (11). The inner wall of the roller (10) is slidably connected to the outer wall of the guide rod (6).

3. The mechanical borehole geophysical exploration auxiliary device according to claim 1, characterized in that, The pulley (15) assembly includes a second mounting base (12), a second motor (13), a rotating shaft (14), and a pulley (15). The bottom of the connecting plate (11) is fixedly connected to the top of the second mounting base (12). One side of the second mounting base (12) is fixedly connected to one end of the second motor (13). The output end of the second motor (13) is fixedly connected to one end of the rotating shaft (14). The other end of the rotating shaft (14) passes through the bottom of the second mounting base (12) and extends outward. The outer wall of the rotating shaft (14) is fixedly connected to the inner wall of the pulley (15). The pulley (15) is located on the inner wall of the second mounting base (12).

4. The mechanical borehole geophysical exploration auxiliary device according to claim 3, characterized in that, The inner wall of the pulley (15) is fixedly connected to a sliding cable, one end of which is fixedly connected to an installation structure, and a probe is fixedly installed at the bottom of the installation structure.

5. The mechanical borehole geophysical exploration auxiliary device according to claim 2, characterized in that, The fixing assembly includes a second mounting plate (16), a slide groove (17), a slider (18), a lead screw (19), a throttle (20), and a clamping plate (21). The bottom of the mounting bracket (2) is fixedly connected to the top of the second mounting plate (16). The second mounting plate (16) has a slide groove (17) in the middle. The inner wall of the slide groove (17) is slidably connected to both sides of the slider (18). The inner wall of the slider (18) is threadedly connected to the outer wall of the lead screw (19). One end of the lead screw (19) is fixedly connected to one side of the throttle (20), and the other end of the lead screw (19) is fixedly connected to one side of the clamping plate (21).

6. The mechanical borehole geophysical exploration auxiliary device according to claim 5, characterized in that, The clamping plate (21) has multiple mounting slots (22) arranged at equal intervals on the side facing the hole (1). The bottom of the inner wall of each mounting slot (22) is fixedly connected to a spring (23), the top of each spring (23) is fixedly connected to a clamping post (24), and the top of each clamping post (24) is fixedly connected to a rubber pad.

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