An auxiliary device for borehole geophysical testing

Abstract

This utility model discloses an auxiliary device for borehole geophysical testing, including an auxiliary component. A drill rod is slidably inserted into one end of the auxiliary component, and a reducing connector is provided at one end of the drill rod. A detection module is threadedly connected to one end of the reducing connector. The auxiliary component includes a cross-shaped structure, with an integrally formed mounting cylinder at the center of one side of the cross-shaped structure. An opening groove is provided at one end of the mounting cylinder, and a rubber collar is bonded to the inside of the opening groove using adhesive. An oil reservoir is bolted to the outer wall of one side of the mounting cylinder, and a piston plate is slidably connected inside the oil reservoir. This utility model employs a hydraulic structure linking the oil reservoir and the rubber collar. When the drive motor rotates the transmission screw, the piston plate pushes hydraulic oil through the cavity into the rubber collar, causing it to expand and grip the drill rod. This effectively solves the fatigue problem caused by manual fixing, and the pressure can be precisely controlled to avoid damage to the drill rod, improving stability during data acquisition. It is particularly suitable for long-term measurement scenarios, ensuring accurate detection of changes in the physical field.

Description

Technical Field

[0001] This utility model relates to the field of borehole geophysical exploration technology, and specifically to an auxiliary device for borehole geophysical exploration testing. Background Technology

[0002] Borehole geophysical exploration is a geophysical exploration method that utilizes the differences in physical properties (such as electrical, magnetic, or elastic differences) between different underground media to infer the geological conditions of the borehole wall and surrounding area using detection instruments placed in the borehole. This method directly measures changes in physical fields (such as electric, magnetic, acoustic, or temperature fields) within the borehole and combines this with surface exploration data to construct a subsurface geological model, thereby enabling the detection of hidden geological bodies. The data acquisition process for borehole geophysical exploration consists of two parts: pushing and measuring. At the borehole opening, a variable-diameter connector connects the drill rod and the borehole geophysical equipment. Once the drill rod is pushed to the target depth (i.e., after the instrument has passed through the casing), measurements begin point by point. Measurements are taken after each drill rod is pushed, with each measurement requiring 20 seconds of data acquisition. During data acquisition, the drill rod cannot be pushed further. After completing the acquisition at one measurement point, the drill rod is pushed to the next point until the data acquisition for the entire borehole is completed.

[0003] For example, a borehole geophysical exploration testing auxiliary device with application number CN202221268604.0 and authorization announcement date of 20220823 effectively solves the problem that existing borehole geophysical exploration equipment is not easy to change the spacing between probes, resulting in poor detection. The device includes a body with a drill bit installed at the bottom. An adjustment assembly is installed inside the body, including mounting blocks equidistantly installed inside the body, a connecting unit between two mounting blocks, probes installed at equal angles on the outer sides of the mounting blocks, a screw threaded to the top of the body, a throttle handle installed at the top of the screw, and a top block installed at the bottom of the screw. This invention utilizes the pressure applied to the top mounting block. Because each first spring has the same elasticity, each first spring is compressed by the same distance, resulting in an equidistant shortening of the distance between adjacent probes. This facilitates equidistant adjustment of the distance between adjacent probes, thereby improving the detection effect.

[0004] During the drill rod pushing process, when collecting data at a measuring point, workers need to manually hold the drill rod in place to ensure it does not move. However, holding the drill rod manually for a long time can easily lead to fatigue and operational errors. Therefore, it is urgent to design an auxiliary device for in-hole geophysical testing to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an auxiliary device for borehole geophysical testing to address the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An auxiliary device for borehole geophysical testing includes an auxiliary component. A drill rod is slidably inserted into one end of the auxiliary component, and a reducing connector is provided at one end of the drill rod. A detection module is threadedly connected to one end of the reducing connector. The auxiliary component includes a cross-shaped structure. An installation cylinder is integrally formed at the center of one side of the cross-shaped structure, and an opening groove is formed at one end of the installation cylinder. A rubber collar is bonded to the inside of the opening groove using adhesive. An oil reservoir is bolted to the outer wall of one side of the installation cylinder, and a piston plate is slidably connected inside the oil reservoir. A drive motor is bolted to one end of the oil reservoir, and a transmission screw is mounted to the output end of the drive motor via a coupling. The transmission screw is threadedly connected to the piston plate. Hydraulic oil is stored inside the oil reservoir. A cavity is formed on the inner wall of the installation cylinder, and the cavity connects the oil reservoir and the rubber collar.

[0008] Furthermore, a detection component is bolted to one side of the outer wall of the top of the mounting cylinder. The detection component includes a mounting shell, a digital display module is bolted to one side of the outer wall of the mounting shell, and an electric push rod is bolted to the top of the mounting shell.

[0009] Furthermore, a sliding shell is slidably inserted inside the mounting housing, and a rubber wheel is installed inside the sliding shell via a bearing. The sliding shell is installed together with the output end of the electric push rod by bolts, and the rubber wheel is in contact with the drill rod.

[0010] Furthermore, a groove is provided on one side of the outer wall of the mounting housing, and an encoder is installed on one side of the outer wall of the sliding housing by bolts. One end of the encoder is installed together with a rubber wheel by a coupling, and the encoder passes through the groove.

[0011] Furthermore, four through holes are provided on the outer wall of the other side of the cross, and tapered anchor rods are slidably inserted into the through holes.

[0012] Furthermore, four conical cylinders are welded to one side of the outer wall of the cross, and the conical cylinders are interconnected with the through holes. The conical anchor rods are threadedly connected inside the conical cylinders.

[0013] In the above technical solution, the beneficial effects of the borehole geophysical testing auxiliary device provided by this utility model are as follows:

[0014] (1) This utility model adopts a hydraulic structure that links the oil storage cylinder and the rubber sleeve. When the drive motor drives the transmission screw to rotate, the piston plate pushes the hydraulic oil through the cavity into the rubber sleeve, causing it to expand and tighten the drill rod. This effectively solves the fatigue problem caused by manual fixing, and the pressure can be precisely controlled to avoid damage to the drill rod, thus improving the stability during data acquisition. It is especially suitable for long-term measurement scenarios, ensuring accurate detection of changes in the physical field.

[0015] (2) The detection component of this utility model drives the rubber wheel to fit tightly against the drill rod through the electric push rod, and the encoder records the displacement of the drill rod in real time and transmits it to the digital display module to realize millimeter-level monitoring of the pushing distance, ensuring accurate positioning of each measuring point, solving the problem of missing parameter monitoring, and avoiding the cumulative error of traditional manual interpretation.

[0016] (3) The tapered anchor rods set at the four corners of the cross of this utility model can be screwed into the stratum and form multi-point support with the guide structure of the tapered cylinder to prevent borehole collapse or equipment displacement. It is particularly suitable for long-term continuous operation under loose stratum conditions, solves the problem of insufficient adaptability to curved or irregular boreholes, ensures the stability of the device in loose stratum or inclined duct, reduces vibration interference, and improves the detection reliability of hidden geological bodies. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of an in-hole geophysical testing auxiliary device of this utility model.

[0019] Figure 2 This is a schematic diagram of the auxiliary component structure provided in an embodiment of an in-hole geophysical testing auxiliary device of this utility model.

[0020] Figure 3 This is a schematic diagram of the mounting cylinder, oil reservoir, and detection components provided in an embodiment of an in-hole geophysical exploration testing auxiliary device of this utility model.

[0021] Figure 4 This is a schematic diagram of the detection component structure provided in an embodiment of an in-hole geophysical testing auxiliary device of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Auxiliary components; 2. Drill rod; 3. Reducing joint; 4. Detection module; 5. Cross; 6. Tapered cylinder; 7. Through hole; 8. Tapered anchor bolt; 9. Mounting cylinder; 10. Opening slot; 11. Rubber collar; 12. Oil reservoir; 13. Detection component; 14. Drive motor; 15. Transmission screw; 16. Piston plate; 17. Cavity; 18. Hydraulic oil; 19. Mounting shell; 20. Electric push rod; 21. Digital display module; 22. Sliding shell; 23. Groove; 24. Encoder; 25. Rubber wheel. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-4 As shown in the figure, the present invention provides an auxiliary device for borehole geophysical testing, including an auxiliary component 1. A drill rod 2 is slidably inserted into one end of the auxiliary component 1, and a reducing connector 3 is provided at one end of the drill rod 2. A detection module 4 is threadedly connected to one end of the reducing connector 3. The auxiliary component 1 includes a cross 5. An installation cylinder 9 is integrally formed at the center of one side of the cross 5, and an opening groove 10 is opened at one end of the installation cylinder 9. A rubber collar 11 is bonded to the inside of the opening groove 10 with adhesive. An oil storage cylinder 12 is bolted to the outer wall of one side of the installation cylinder 9, and a piston plate 16 is slidably connected inside the oil storage cylinder 12. A drive motor 14 is bolted to one end of the oil storage cylinder 12, and a transmission screw 15 is installed at the output end of the drive motor 14 through a coupling. The transmission screw 15 and the piston plate 16 are threadedly connected. Hydraulic oil 18 is stored inside the oil storage cylinder 12. A cavity 17 is opened on the inner wall of the installation cylinder 9, and the cavity 17 is used to connect the oil storage cylinder 12 and the rubber collar 11.

[0026] Specifically, in this embodiment, an auxiliary component 1 is included. A drill pipe 2 is slidably inserted into one end of the auxiliary component 1. Geological drilling commonly uses alloy steel drill pipes (such as RQD series, NQ / HQ series) or carbon fiber composite drill pipes (for lightweight applications). One end of the drill pipe 2 is equipped with a reducing connector 3, which uses a standard geological thread interface (such as the API standard) or a customized reducing thread connector. One end of the reducing connector 3 is threadedly connected to a detection module 4. The detection module 4 integrates geophysical sensors (such as resistivity meters, acoustic probes, etc.) for collecting geological data within the borehole.

[0027] Resistivity Probe: AGISuperSting TM series;

[0028] Acoustic detection: PASIGPR series ground-penetrating radar module; auxiliary component 1 includes a cross 5, with an integrally formed mounting cylinder 9 at the center of one side of the cross 5, and an opening groove 10 at one end of the mounting cylinder 9. A rubber collar 11 is bonded to the inside of the opening groove 10 with adhesive. The rubber collar 11 is made of nitrile rubber (NBR70, oil-resistant and pressure-resistant). After the rubber collar 11 expands under hydraulic pressure, it grips the drill rod 2, eliminating shaking and ensuring that the detection module 4 can stably collect data in the hole, and the pressure is controllable to avoid damaging the surface of the drill rod 2; an oil reservoir 12 is bolted to the outer wall of one side of the mounting cylinder 9, and a piston plate 16 is slidably connected inside the oil reservoir 12. One end of the oil reservoir 12 is bolted to... The drive motor 14 is preferably an Oriental Motor PKP series stepper motor. The output end of the drive motor 14 is connected to a transmission screw 15 via a coupling. The transmission screw 15 is threadedly connected to the piston plate 16. The oil reservoir 12 stores hydraulic oil 18. A cavity 17 is opened on the inner wall of the mounting cylinder 9. The drive motor 14 drives the transmission screw 15 to rotate, pushing the piston plate 16 to squeeze the hydraulic oil 18 in the oil reservoir 12. The hydraulic oil 18 is injected into the rubber collar 11 through the cavity 17, causing it to expand radially and grip the drill rod 2. The pressure value is precisely controlled by the motor speed to avoid mechanical damage from traditional clamps. The cavity 17 is used to connect the oil reservoir 12 and the rubber collar 11.

[0029] This utility model provides an auxiliary device for borehole geophysical testing, which adopts a hydraulic structure that links the oil reservoir 12 and the rubber collar 11. When the drive motor 14 drives the transmission screw 15 to rotate, the piston plate 16 pushes the hydraulic oil 18 through the cavity 17 into the rubber collar 11, causing it to expand and tighten around the drill rod. This effectively solves the fatigue problem caused by manual fixing, and the pressure can be precisely controlled to avoid damage to the drill rod 2. This improves the stability during data acquisition and is especially suitable for long-term measurement scenarios, ensuring accurate detection of changes in the physical field.

[0030] In one embodiment provided by this utility model, such as Figure 3-4As shown, a detection component 13 is bolted to one side of the outer wall of the top of the mounting cylinder 9. The detection component 13 includes a mounting housing 19. A digital display module 21 is bolted to one side of the outer wall of the mounting housing 19. The digital display module 21 is preferably a Siemens SIRIUS 3RN series or Omron K3HM-R. An electric actuator 20 is bolted to the top of the mounting housing 19. The electric actuator 20 is preferably a LINAKLA series electric actuator. A sliding housing 22 is slidably inserted into the mounting housing 19. A rubber wheel 25 is mounted inside the sliding housing 22 via a bearing. The rubber wheel 25 is preferably polyurethane (hardness 80 Shore A, wear-resistant). The electric actuator 20 pushes the sliding housing 22 to move along the mounting housing 19, causing the sliding housing... The rubber wheel 25 inside the 22 is in close contact with the surface of the drill rod 2; the sliding shell 22 is installed together with the output end of the electric push rod 20 by bolts, the rubber wheel 25 is in contact with the drill rod 2, a groove 23 is opened on one side of the outer wall of the mounting shell 19, and an encoder 24 is installed on one side of the outer wall of the sliding shell 22 by bolts. The encoder 24 is preferably an Omron E6B2-CWZ6C incremental rotary encoder. When the drill rod 2 is advanced, the rubber wheel 25 rotates with the drill rod 2, driving the encoder 24 to record the displacement signal, and transmits the data to the digital display module 21 through the groove 23 to display the millimeter-level advance distance in real time, avoiding manual interpretation errors; and one end of the encoder 24 is installed together with the rubber wheel 25 through a coupling, and the encoder 24 passes through the groove 23.

[0031] In another embodiment provided by this utility model, such as Figure 2 As shown, four through holes 7 are provided on the outer wall of the other side of the cross 5, and a conical anchor rod 8 is slidably inserted into the through hole 7. Four conical cylinders 6 are welded to the outer wall of one side of the cross 5. The conical anchor rods 8 are inserted into the through holes 7 at the four corners of the cross 5. By rotating the conical anchor rod 8, it is screwed into the formation along the guide structure of the conical cylinder 6 welded to the cross 5. The conical cylinder 6 is connected to the through hole 7, providing stable anchoring guidance, forming multi-point support, and preventing borehole collapse or device displacement. It is especially suitable for loose formations or inclined tunnels. The conical cylinder 6 and the through hole 7 are interconnected, and the conical anchor rod 8 is threaded inside the conical cylinder 6.

[0032] Example 1

[0033] A borehole geophysical testing auxiliary device includes an auxiliary component 1. A drill pipe 2 is slidably inserted into one end of the auxiliary component 1. Alloy steel drill pipes (such as RQD series, NQ / HQ series) or carbon fiber composite drill pipes (for lightweight applications) are commonly used in geological drilling. A reducing connector 3 is provided at one end of the drill pipe 2. The reducing connector 3 uses a standard geological thread interface (such as API standard) or a customized reducing thread connector. A detection module 4 is threadedly connected to one end of the reducing connector 3. The detection module 4 integrates geophysical sensors (such as resistivity meters, acoustic probes, etc.) for collecting borehole geological data.

[0034] Resistivity Probe: AGISuperSting TM series;

[0035] Acoustic detection: PASIGPR series ground-penetrating radar module; auxiliary component 1 includes a cross 5, with an integrally formed mounting cylinder 9 at the center of one side of the cross 5, and an opening groove 10 at one end of the mounting cylinder 9. A rubber collar 11 is bonded to the inside of the opening groove 10 with adhesive. The rubber collar 11 is made of nitrile rubber (NBR70, oil-resistant and pressure-resistant). After the rubber collar 11 expands under hydraulic pressure, it grips the drill rod 2, eliminating shaking and ensuring that the detection module 4 can stably collect data in the hole, and the pressure is controllable to avoid damaging the surface of the drill rod 2; an oil reservoir 12 is bolted to the outer wall of one side of the mounting cylinder 9, and a piston plate 16 is slidably connected inside the oil reservoir 12. One end of the oil reservoir 12 is bolted to... The drive motor 14 is preferably an Oriental Motor PKP series stepper motor. The output end of the drive motor 14 is connected to a transmission screw 15 via a coupling. The transmission screw 15 is threadedly connected to the piston plate 16. The oil reservoir 12 stores hydraulic oil 18. A cavity 17 is opened on the inner wall of the mounting cylinder 9. The drive motor 14 drives the transmission screw 15 to rotate, pushing the piston plate 16 to squeeze the hydraulic oil 18 in the oil reservoir 12. The hydraulic oil 18 is injected into the rubber collar 11 through the cavity 17, causing it to expand radially and grip the drill rod 2. The pressure value is precisely controlled by the motor speed to avoid mechanical damage from traditional clamps. The cavity 17 is used to connect the oil reservoir 12 and the rubber collar 11.

[0036] Example 2

[0037] This embodiment further defines the features of Embodiment 1. A detection component 13 is bolted to one side of the outer wall of the top of the mounting cylinder 9. The detection component 13 includes a mounting shell 19. A digital display module 21 is bolted to one side of the outer wall of the mounting shell 19. The digital display module 21 is preferably a Siemens SIRIUS 3RN series or an Omron K3HM-R. An electric actuator 20 is bolted to the top of the mounting shell 19. The electric actuator 20 is preferably a LINAKLA series electric actuator. A sliding shell 22 is slidably inserted inside the mounting shell 19, and a rubber wheel 25 is mounted inside the sliding shell 22 via a bearing. The rubber wheel 25 is preferably polyurethane (hardness 80 Shore A, wear-resistant). The electric actuator 20 pushes the sliding shell 22 to move along the mounting shell 19, causing the rubber wheel 25 inside the sliding shell 22 to press tightly against the surface of the drill rod 2. The sliding shell 22 is bolted to the output end of the electric actuator 20, and the rubber wheel 25 contacts the drill rod 2. A groove 23 is formed on one side of the outer wall of the mounting shell 19, and the sliding shell 22 is bolted to one side of the outer wall. An encoder 24 is installed, preferably an Omron E6B2-CWZ6C incremental rotary encoder. When the drill rod 2 is advanced, the rubber wheel 25 rotates with the drill rod 2, driving the encoder 24 to record the displacement signal. The data is then transmitted to the digital display module 21 through the groove 23 to display the millimeter-level advance distance in real time, avoiding errors in manual interpretation. One end of the encoder 24 is mounted to the rubber wheel 25 via a coupling, and the encoder 24 passes through the groove 23. Four through holes 7 are opened on the outer wall of the other side of the cross 5. 7. A tapered anchor rod 8 is slidably inserted inside. Four tapered cylinders 6 are welded to the outer wall of one side of the cross 5. The tapered anchor rod 8 is inserted into the through holes 7 at the four corners of the cross 5. By rotating the tapered anchor rod 8, it is screwed into the formation along the guide structure of the tapered cylinder 6 welded to the cross 5. The tapered cylinder 6 is connected to the through hole 7, providing stable anchoring guidance, forming multi-point support, and preventing borehole collapse or device displacement. It is especially suitable for loose formations or inclined tunnels. The tapered cylinder 6 and the through hole 7 are interconnected, and the tapered anchor rod 8 is threaded inside the tapered cylinder 6.

[0038] Working principle: During installation, tapered anchor rods 8 are inserted into the through holes 7 at the four corners of the cross 5. By rotating the tapered anchor rods 8, they are screwed into the formation along the guide structure of the tapered cylinder 6. During this process, the tapered cylinder 6 is welded and fixed to the cross 5, forming a multi-point support structure that can resist the collapse force of loose formations and prevent the device from shifting. Subsequently, the drill rod 2 is inserted into the opening slot 10 of the installation cylinder 9, and the end is threadedly connected to the detection module 4 through the reducer 3. The rubber collar 11 on the inner wall of the installation cylinder 9 is initially in a relaxed state, allowing the drill rod 2 to slide freely, which facilitates the adjustment of the detection depth. When the measuring point is reached, the drive motor 14 starts and the transmission screw 15... The piston plate 16 moves within the oil reservoir 12, compressing the hydraulic oil 18 and allowing it to enter the rubber collar 11 through the cavity 17. After the hydraulic oil 18 is injected, the rubber collar 11 expands and grips the drill rod 2, eliminating the shaking of the drill rod 2 and ensuring that the detection module 4 can stably collect data within the hole. When the drill rod 2 is delivered, the electric push rod 20 is operated, which pushes the sliding shell 22 to move, causing the rubber wheel 25 to press tightly against the surface of the drill rod 2. When the drill rod 2 is subsequently advanced, the rubber wheel 25 rotates, driving the encoder 24 to record the displacement data, which is transmitted in real time to the digital display module 21, achieving millimeter-level precision in monitoring the drilling distance and avoiding errors from manual interpretation.

[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A borehole geophysical test assisting device comprising an assisting assembly (1), characterized in that, The auxiliary component (1) has a drill rod (2) slidably inserted at one end, and a reducing connector (3) is provided at one end of the drill rod (2). A detection module (4) is threadedly connected to one end of the reducing connector (3). The auxiliary component (1) includes a cross (5). An installation cylinder (9) is integrally formed at the center of one side of the cross (5). An opening groove (10) is provided at one end of the installation cylinder (9). A rubber collar (11) is bonded to the inside of the opening groove (10) with adhesive. An oil reservoir (1) is bolted to the outer wall of one side of the installation cylinder (9). 2), and a piston plate (16) is slidably connected inside the oil storage cylinder (12). A drive motor (14) is installed at one end of the oil storage cylinder (12) by bolts, and a transmission screw (15) is installed at the output end of the drive motor (14) by a coupling. The transmission screw (15) and the piston plate (16) are threadedly connected. Hydraulic oil (18) is stored inside the oil storage cylinder (12). A cavity (17) is opened on the inner wall of the mounting cylinder (9), and the cavity (17) is used to connect the oil storage cylinder (12) and the rubber collar (11).

2. A borehole geophysical logging auxiliary device according to claim 1, characterized in that, The detection component (13) is bolted to the outer wall of the top side of the mounting cylinder (9). The detection component (13) includes a mounting shell (19). A digital display module (21) is bolted to the outer wall of one side of the mounting shell (19). An electric push rod (20) is bolted to the top of the mounting shell (19).

3. A borehole geophysical logging auxiliary device according to claim 2, characterized in that, The mounting housing (19) has a sliding housing (22) slidably inserted inside, and a rubber wheel (25) is installed inside the sliding housing (22) through a bearing. The sliding housing (22) is installed together with the output end of the electric push rod (20) by bolts, and the rubber wheel (25) is in contact with the drill rod (2).

4. A borehole geophysical logging auxiliary device according to claim 3, characterized in that, The mounting housing (19) has a groove (23) on one side of its outer wall. An encoder (24) is installed on one side of the sliding housing (22) by bolts. One end of the encoder (24) is installed together with a rubber wheel (25) by a coupling. The encoder (24) passes through the groove (23).

5. The borehole geophysical logging auxiliary device of claim 1, wherein, The cross (5) has four through holes (7) on its other outer wall, and a tapered anchor rod (8) is slidably inserted into the through hole (7).

6. The borehole geophysical testing auxiliary device according to claim 5, characterized in that, Four conical cylinders (6) are welded to one side of the outer wall of the cross (5), and the conical cylinders (6) are interconnected with the through hole (7). The conical anchor rod (8) is threaded inside the conical cylinder (6).

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