Ground transient electromagnetic exploration device

Abstract

The invention relates to electromagnetic exploration equipment, and particularly discloses a ground transient electromagnetic exploration device which comprises a movable frame (1), a receiving and transmitting coil (2), a transient electromagnetic instrument (3) electrically connected with the receiving and transmitting coil (2) and an adjusting mechanism, and the receiving and transmitting coil (2) is connected with the movable frame (1) through the adjusting mechanism. The adjusting mechanism comprises a horizontal angle adjusting mechanism (6) used for adjusting the horizontal angle of the transmitting-receiving coil (2), a pitching angle adjusting mechanism (5) used for adjusting the pitching angle of the transmitting-receiving coil (2) and a coil lifting mechanism (7) used for adjusting the relative height between the transmitting-receiving coil (2) and the ground. According to the ground transient electromagnetic exploration device, a worker can be mechanically assisted to move and adjust the receiving and transmitting coil, the working intensity of transient electromagnetic exploration of the worker is reduced, the working efficiency is improved, the exploration error is reduced, and the data comparability and the accuracy of an explanation result are improved.

Description

Technical Field

[0001] This invention relates to electromagnetic exploration equipment, and more specifically, to a ground transient electromagnetic exploration device. Background Technology

[0002] Transient electromagnetic exploration technology, a geophysical exploration method based on the principle of electromagnetic induction, transmits pulsed electromagnetic fields underground and uses coils to collect secondary electromagnetic field signals induced by the underground medium. This enables the detection of underground rock strata, mineral resources, groundwater, or hidden structures. It is widely used in mineral resource exploration, engineering geological surveys, hydrogeological investigations, and environmental monitoring.

[0003] In existing technologies, when using transient electromagnetic instruments to explore the ground, multiple workers need to manually carry heavy cables or coils to the designated measuring point. After reaching the point, the cables or coils must be manually adjusted as needed, ensuring the coil's center of convergence is aligned with the measuring point and maintaining good coupling between the coil and the ground. In complex terrain, multiple workers often need to manually carry the coils for exploration. The handling and manual adjustment of cables and coils are labor-intensive, inefficient, and prone to errors, affecting data comparability and the accuracy of interpretation.

[0004] In view of this, there is a need to design a ground transient electromagnetic exploration device that can effectively solve or mitigate the above-mentioned technical defects. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a ground transient electromagnetic exploration device that can reduce the workload of workers conducting transient electromagnetic exploration, improve work efficiency, and reduce exploration errors.

[0006] To solve the above-mentioned technical problems, the present invention provides a ground transient electromagnetic exploration device, which includes: Mobile chassis; Transceiver coil; A transient electromagnetic instrument electrically connected to the transceiver coil; and An adjustment mechanism is provided, through which the transceiver coil is connected to the mobile frame. The adjustment mechanism includes a horizontal angle adjustment mechanism for adjusting the horizontal angle of the transceiver coil, a pitch angle adjustment mechanism for adjusting the pitch angle of the transceiver coil, and a coil lifting mechanism for adjusting the relative height of the transceiver coil to the ground.

[0007] Specifically, the adjustment mechanism further includes a connecting plate, the transceiver coil is connected to the connecting plate through the pitch angle adjustment mechanism, and the connecting plate is connected to the mobile frame through the coil lifting mechanism and the horizontal angle adjustment mechanism.

[0008] Specifically, the bottom of the connecting plate forms a frame structure. The pitch angle adjustment mechanism includes a pitch adjustment threaded rod rotatably disposed in the frame structure, a slide rod, a slider, a connecting rod, a first rotating rod, a second rotating rod, and a pitch angle driving component for driving the pitch adjustment threaded rod to rotate. The pitch adjustment threaded rod and the slide rod are parallel to each other. A pitch adjustment threaded hole and a slide rod guide hole are formed on the slider. The pitch adjustment threaded rod is threadedly connected to the pitch adjustment threaded hole. The slider slides along the slide rod through the slide rod guide hole. The bottom of the first rotating rod is connected to the transceiver coil. The top of the second rotating rod is connected to the connecting plate. The top of the first rotating rod and the bottom of the second rotating rod are hinged. The two ends of the connecting rod are respectively hinged to the slider and the transceiver coil. The hinge axis between the connecting rod and the slider, the hinge axis between the connecting rod and the transceiver coil, and the hinge axis between the first rotating rod and the second rotating rod are parallel to each other.

[0009] Specifically, the horizontal angle adjustment mechanism includes a worm gear rotatably connected to the movable frame, a rotating ring horizontally and rotatably connected to the movable frame, a worm gear sleeve fixedly connected to the outer wall of the rotating ring, a horizontal angle drive component for driving the worm gear to rotate, several guide sleeves, and several guide rods slidably disposed in the corresponding guide sleeves. The worm gear sleeve meshes with the worm gear. One of the guide rods and the guide sleeves is connected to the lower surface of the rotating ring, and the other is connected to the upper surface of the connecting plate. The guide rods are slidably disposed in the guide sleeves.

[0010] Specifically, the coil lifting mechanism includes a lifting threaded cylinder rotatably connected to the connecting plate, a lifting threaded rod, a lifting drive component for driving the lifting threaded rod to rotate, and a positioning rod connected to the mobile frame. The upper surface of the lifting threaded cylinder forms a lifting threaded hole for threaded connection of the lifting threaded rod. A positioning hole is formed on the lifting threaded cylinder, and the positioning rod is disposed in the positioning hole. The guide rod, the positioning rod, and the lifting threaded rod are parallel to each other.

[0011] Preferably, it further includes at least two support plates and at least two support plate lifting mechanisms for adjusting the relative height of the support plates with respect to the ground, wherein the support plates are disposed on both sides of the mobile vehicle via the support plate lifting mechanisms.

[0012] Specifically, the support plate lifting mechanism includes a connecting column, a support threaded rod, a support plate lifting drive for driving the support threaded rod to rotate, and at least two limiting rods. The top of the connecting column forms a support threaded hole for threaded connection of the support threaded rod. The bottom ends of the connecting column and the limiting rod are both connected to the upper surface of the support plate. The movable frame forms a limiting hole adapted to the limiting rod, so as to limit the horizontal rotation of the support plate through the cooperation of the limiting rod and the limiting hole.

[0013] Preferably, both the support column and the limiting rod are hinged to the upper surface of the support plate, and the axis of the hinge between the support column and the support plate coincides with the axis of the hinge between the limiting rod and the support plate.

[0014] Preferably, the support plate lifting drive includes a first bevel gear sleeved on the lifting threaded rod, a bracket mounted on the mobile frame, a transmission rod rotatably connected to the bracket, a second bevel gear meshing with the first bevel gear, a third bevel gear, and a fourth bevel gear meshing with the third bevel gear. The second bevel gear and the third bevel gear are respectively connected to the two ends of the rotating rod, and the fourth bevel gear is connected to the support threaded rod and is coaxial with the support threaded rod.

[0015] Preferably, the connecting column includes a connecting column body, a spring, and a support column. The top of the connecting column body forms the support threaded hole, the bottom of the connecting column body forms a groove, the top of the support column forms a limiting slider, the limiting slider is slidably disposed in the groove, and the bottom of the groove forms a stop portion for stopping the limiting slider. The two ends of the spring abut against the top surface of the limiting slider and the top surface of the groove, respectively.

[0016] Through the above technical solution, the present invention provides a ground transient electromagnetic exploration device. The transceiver coil of this device is mounted on a mobile frame via an adjustment mechanism. The mobile frame can transport the transceiver coil to a predetermined measuring point. Operators can adjust the horizontal angle of the transceiver coil using a horizontal angle adjustment mechanism, the vertical angle using a pitch angle adjustment mechanism, and the height of the transceiver coil using a coil lifting mechanism, ensuring that the geometric center of the transceiver coil is aligned with the measuring point while maintaining good coupling between the transceiver coil and the ground. During the exploration process, the mobile frame assists operators in moving the transceiver coil, transient electromagnetic instrument, and cable. The adjustment mechanism assists operators in adjusting the orientation of the transceiver coil and the coupling between the transceiver coil and the ground, avoiding the need for operators to manually carry the heavy transceiver coil, transient electromagnetic instrument, and cable, and also avoiding the need for operators to manually adjust the transceiver coil. This reduces the workload of operators, improves work efficiency, reduces exploration result errors, and enhances data comparability and the accuracy of result interpretation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the ground transient electromagnetic exploration device according to a specific embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the ground transient electromagnetic exploration device according to a specific embodiment of the present invention, in which half of the mobile frame is cut off to show components such as the pitch angle adjustment mechanism and the horizontal angle adjustment mechanism; Figure 3 This is a three-dimensional structural diagram of the transceiver coil, pitch angle adjustment mechanism, and horizontal angle adjustment mechanism in the ground transient electromagnetic exploration device according to a specific embodiment of the present invention. Figure 4 This is a three-dimensional structural diagram of the transceiver coil and pitch angle adjustment mechanism in the ground transient electromagnetic exploration device according to a specific embodiment of the present invention. Figure 5 This is a schematic diagram of the bottom structure of the connecting plate of the ground transient electromagnetic exploration device according to a specific embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the guide rod and guide sleeve of the ground transient electromagnetic exploration device according to a specific embodiment of the present invention; Figure 7 This is a three-dimensional cross-sectional view of the guide sleeve of the ground transient electromagnetic exploration device according to a specific embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the lifting threaded rod and lifting threaded cylinder of the ground transient electromagnetic exploration device according to a specific embodiment of the present invention; Figure 9This is a three-dimensional cross-sectional view of the lifting threaded cylinder of the ground transient electromagnetic exploration device according to a specific embodiment of the present invention; Figure 10 This is a three-dimensional cross-sectional view of the connecting column structure of the ground transient electromagnetic exploration device according to a specific embodiment of the present invention; Figure 11 This is a schematic diagram of the three-dimensional structure of the inner extension plate of the ground transient electromagnetic exploration device according to a specific embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures 1. Mobile frame; 2. Transceiver coil; 3. Transient electromagnetic instrument; 4. Connecting plate; 401. Frame structure; 5. Pitch angle adjustment mechanism; 501. Pitch adjustment threaded rod; 502. Slide rod; 503. Slider; 504. Connecting rod; 505. First rotating rod; 506. Second rotating rod; 507. Pitch adjustment handle; 508. Pitch adjustment threaded hole; 509. Slide rod guide hole; 6. Horizontal angle adjustment mechanism; 601. Worm gear; 602. Rotary ring; 603. Worm gear sleeve; 604. Horizontal angle adjustment handle; 605. Guide sleeve; 606. Guide rod; 7. Coil lifting mechanism; 701. Lifting threaded cylinder; 702. Lifting threaded rod; 703. Lifting rotating handle; 704. Positioning rod; 70 5. Lifting threaded hole; 706. Positioning hole; 707. Outer extension plate; 8. Support plate; 9. Support plate lifting mechanism; 901. Connecting column; 902. Support threaded rod; 903. Limiting rod; 904. Support threaded hole; 905. Limiting hole; 906. Connecting column body; 907. Spring; 908. Support column; 909. Slide groove; 9010. Limiting slider; 9011. Stop; 9012. Opening; 10. Bracket; 11. First bevel gear; 12. Second bevel gear; 13. Third bevel gear; 14. Fourth bevel gear; 15. Rotating rod; 16. Mounting bracket; 17. Moving handle; 18. Moving support plate; 19. Universal wheel; 20. First rotating sleeve; 21. Second rotating sleeve; 22. Frame body. Detailed Implementation

[0019] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention. The present invention can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0020] These embodiments are provided to make the invention thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that, in this invention, unless otherwise specified, the directional terms "top," "bottom," "upper," "lower," etc., used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. These terms are used only for the purpose of facilitating and simplifying the description of the invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The directional terminology of this invention should be understood in conjunction with the actual installation state.

[0021] It should be noted that, in the description of this invention, unless otherwise stated, "a plurality of" means two or more; words such as "including" or "comprising" mean that the element preceding the word covers the element listed after the word, and do not exclude the possibility of covering other elements as well.

[0022] It should also be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0023] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0024] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0025] like Figure 1The ground transient electromagnetic exploration device of the present invention includes: a mobile frame 1, a transceiver coil 2, a transient electromagnetic instrument 3 electrically connected to the transceiver coil 2, and an adjustment mechanism. The transceiver coil 2 is connected to the mobile frame 1 through the adjustment mechanism. The adjustment mechanism includes a horizontal angle adjustment mechanism 6 for adjusting the horizontal angle of the transceiver coil 2, a pitch angle adjustment mechanism 5 for adjusting the pitch angle of the transceiver coil 2, and a coil lifting mechanism 7 for adjusting the relative height of the transceiver coil 2 with the ground. The ground transient electromagnetic exploration device of the present invention uses the mobile frame 1 to assist the operator in moving the transceiver coil 2 and the transient electromagnetic instrument, and adjusts the exploration angle of the transceiver coil 2 through the pitch angle adjustment mechanism 5 and the horizontal angle adjustment mechanism 6. Then, the lifting assembly adjusts the transceiver coil 2 to maintain optimal coupling with the ground, thereby improving work efficiency and the accuracy of exploration results. Furthermore, this application uses mechanical assistance to move and adjust the transceiver coil 2, which reduces workload and reduces exploration error compared to manual adjustment by the operator.

[0026] As a specific implementation method, such as Figure 1 As shown, the mobile frame 1 includes a handlebar 17, a support plate 18, casters 19, and a frame body 22. Support plates 18 are located at the four bottom corners of the frame body 22, and each support plate 18 has a caster 19 at its bottom. A pair of parallel handlebars 17 are located on one side of the frame body 22 to facilitate manual movement by workers. In addition to the wheeled mobile frame described above, the mobile frame 1 of this invention can also be a tracked mobile frame. Besides manual movement, the frame body 22 can also be moved by a motor.

[0027] As a specific implementation method, such as Figure 1 As shown, a mounting bracket 16 for placing the transient electromagnetic instrument 3 is provided on one side of the mobile frame 1 of the present invention, and a cable groove for cable passage is pre-set on the mobile frame 1. In some other embodiments, the mounting bracket 16 may also be provided on the adjustment mechanism.

[0028] As a specific implementation method, such as Figure 1 As shown, the adjustment mechanism also includes a connecting plate 4. The transceiver coil 2 is connected to the connecting plate 4 through the pitch angle adjustment mechanism 5. The connecting plate 4 is connected to the mobile frame 1 through the coil lifting mechanism 7 and the horizontal angle adjustment mechanism 6.

[0029] As a specific implementation method, such as Figures 2 to 5As shown, a frame structure 401 is formed at the bottom of the connecting plate. The pitch angle adjustment mechanism 5 includes a pitch adjustment threaded rod 501 rotatably disposed in the frame structure 401, a slide rod 502, a slider 503, a connecting rod 504, a first rotating rod 505, a second rotating rod 506 disposed in the frame structure 401, and a pitch angle driving component for driving the pitch adjustment threaded rod 501 to rotate. The pitch adjustment threaded rod 501 and the slide rod 502 are parallel to each other. The slider 503 has a pitch adjustment threaded hole 508 adapted to the pitch adjustment threaded rod 501 and a slide rod guide hole 509 adapted to the slide rod 502. The pitch adjustment threaded rod 501 and the slide rod 502 pass through the pitch adjustment threaded hole 508 and the slide rod guide hole 509, respectively. The bottom of the first rotating rod 505 is connected to the transceiver coil 2, and the top of the second rotating rod 506 is connected to the connecting plate 4. The top of the first rotating rod 505 and the bottom of the second rotating rod 506 are hinged together. The two ends of the connecting rod 504 are respectively hinged to the slider 503 and the transceiver coil 2. The hinge axis between the connecting rod 504 and the slider 503, the hinge axis between the connecting rod 504 and the transceiver coil 2, and the hinge axis between the first rotating rod 505 and the second rotating rod 506 are parallel to each other.

[0030] In some embodiments, the pitch angle drive can be a pitch adjustment handle 507 or a drive motor.

[0031] like Figure 3 As shown, the pitch angle drive in this embodiment is a pitch adjustment handle 507. Rotating the pitch adjustment handle 507 causes the pitch adjustment threaded rod 501 to rotate, which in turn causes the slider 503 to move axially along the slide rod 502. The slider 503 moves along the slide rod closer to or further away from the second rotating rod 506, thereby causing the first rotating rod 505 to rotate relative to the second rotating rod 506, and causing the connecting rod 504 to rotate relative to the slider 503 and the transceiver coil 2, thus driving the pitch movement of the transceiver coil 2. After adjusting the pitch angle of the transceiver coil 2 to a predetermined angle, the rotation of the pitch adjustment handle 504 is stopped. Because the thread of the pitch adjustment threaded rod 501 has self-locking properties, the stability of the slider 503 after movement is ensured, avoiding changes in the pitch angle caused by the weight of the transceiver coil 2.

[0032] As a specific implementation method, such as Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, the horizontal angle adjustment mechanism 6 includes a worm gear 601 rotatably connected to the movable frame 1, a rotating ring 602, a worm gear sleeve 603, a horizontal angle driving component for driving the worm gear 601 to rotate, several guide sleeves 605, and several guide rods 606 slidably disposed in the corresponding guide sleeves 605. A rotating groove is formed on the inner top surface of the movable frame 1. The rotating ring 602 is horizontally placed below the inner top surface of the movable frame 1, with its upper part positioned in the rotating groove, allowing the rotating ring 602 to rotate horizontally. Both the rotating groove and the rotating ring 602 form a stop structure to prevent the rotating ring 602 from separating from the movable frame 1, thereby achieving a horizontal and rotatable connection between the rotating ring 602 and the movable frame 1. The worm gear sleeve 603 is fixedly connected to the lower outer wall of the rotating ring 602. The worm gear sleeve 603 meshes with the worm 601. One of the guide rod 606 and the guide sleeve 605 is connected to the lower surface of the rotating ring 602, and the other is connected to the upper surface of the connecting plate 4. The guide rod 606 is slidably disposed in the guide sleeve 605.

[0033] In some specific embodiments, the horizontal angle drive can be a horizontal angle adjustment handle 604 or a drive motor.

[0034] like Figure 2 and Figure 3 As shown, the horizontal angle driving component in this embodiment is a horizontal angle adjustment handle 604. The operator can rotate the horizontal angle adjustment handle 604, causing the worm gear 601 to rotate accordingly. The rotation of the worm gear 601 drives the rotating ring 602 and the worm wheel sleeve 603 to rotate horizontally. The guide rod 606 at the bottom of the worm wheel sleeve 603 rotates with the worm wheel sleeve 603, driving the guide sleeve 605 to rotate, thereby causing the connecting plate 4, which is fixedly connected to the guide sleeve 605, to rotate horizontally, and further driving the transceiver coil 2 to rotate horizontally, thus adjusting the horizontal angle of the transceiver coil 2. After the horizontal angle of the transceiver coil 2 is adjusted, the horizontal angle adjustment handle 604 is stopped. The worm wheel sleeve 603 and the worm gear 601 form a worm gear structure. Because the worm gear structure has self-locking properties, it can ensure the stability of the worm wheel sleeve 603 after rotation, keeping the horizontal angle of the transceiver coil 2 at a predetermined angle.

[0035] Since the connecting plate 4 and the worm gear sleeve 603 in this embodiment achieve horizontal rotation through the cooperation of the guide sleeve 605 and the guide rod 606, the vertical movement of the connecting plate 4 relative to the worm gear sleeve 603 and the moving frame 1 is not affected.

[0036] As a specific implementation method, such as Figure 2 , Figure 3 , Figure 8 and Figure 9As shown, the coil lifting mechanism 7 includes a lifting threaded cylinder 701 rotatably connected to the connecting plate 4, a lifting threaded rod 702, a lifting drive component for driving the lifting threaded rod 702 to rotate, and a positioning rod 704 connected to the mobile frame 1. The upper surface of the lifting threaded cylinder 701 forms a lifting threaded hole 705 for threaded connection of the lifting threaded rod 702. A positioning hole 706 is formed on the lifting threaded cylinder 701. The positioning rod 704 is disposed in the positioning hole 706, and the guide rod 606, the positioning rod 704, and the lifting threaded rod 702 are parallel to each other.

[0037] In some specific embodiments, such as Figure 8 and Figure 9 As shown, an extension plate 707 is formed on the upper part of the lifting threaded cylinder 702, a positioning hole 706 is formed on the extension plate 707, and the lifting threaded rod 702 is vertically arranged.

[0038] In some specific embodiments, the lifting drive component can be a lifting and rotating handle 703 or a drive motor.

[0039] like Figures 1 to 3 As shown, the lifting drive component in this embodiment uses a lifting rotary handle 703. The operator can rotate the lifting rotary handle 703 to drive the lifting threaded rod 702 to rotate. Due to the cooperation of the positioning rod 704 and the positioning hole 706, the lifting threaded cylinder 701 will not rotate relative to the moving frame 1 when the lifting threaded rod 702 rotates, but will move up and down along the lifting threaded rod 702. Since the lifting threaded cylinder 701 is rotatably connected to the connecting plate 4, and the guide sleeve 605 can move up and down along the guide rod 606, the up and down movement of the lifting threaded cylinder 701 can drive the guide sleeve 605 to move up and down along the guide rod 606. Therefore, the lifting threaded cylinder 701 can drive the connecting plate 4 to move up and down, thereby adjusting the height of the transceiver coil 2. After the height of the transceiver coil 2 is adjusted, the lifting rotary handle 703 is stopped. Because the thread of the lifting threaded rod 702 has self-locking properties, the stability of the lifting threaded cylinder 701 after moving up and down is ensured, avoiding changes in height caused by the weight of the transceiver coil 2.

[0040] Since the lifting threaded cylinder 701 and the connecting plate 4 are rotatably connected in this embodiment, the lifting threaded cylinder 701, which cannot rotate relative to the moving frame 1, will not affect the horizontal angle adjustment mechanism to adjust the horizontal angle of the connecting plate 4.

[0041] In a preferred embodiment, the ground transient electromagnetic exploration device of the present invention further includes at least two support plates 8 and at least two support plate lifting mechanisms 9 for adjusting the relative height of the support plates 8 with respect to the ground. The support plates 8 are disposed on both sides of the mobile vehicle 1 through the support plate lifting mechanisms 9. After the ground transient electromagnetic exploration device moves to the predetermined measuring point, the height of the support plates 8 is adjusted by the support plate lifting mechanisms 9 so that the support plates 8 abut against the ground, preventing the ground transient electromagnetic exploration device from moving during exploration.

[0042] As a specific implementation method, such as Figure 1 , Figure 2 and Figure 10 As shown, the support plate lifting mechanism 9 includes a connecting column 901, a support threaded rod 902, a support plate lifting drive component for driving the support threaded rod 902 to rotate, and at least two limiting rods 903. The top of the connecting column 901 forms a support threaded hole 904 for threaded connection of the support threaded rod 902. The bottom ends of the connecting column 901 and the limiting rods 903 are both connected to the upper surface of the support plate 8. Figure 2 and Figure 11 As shown, in this embodiment, the bottom side of the mobile frame 1 extends inward to form an inner extension plate. An opening 9012 is formed on the inner extension plate for the connecting column 901 to pass through. Limiting holes 905 that are adapted to the limiting rod 903 are formed on both sides of the opening 9012, so as to limit the horizontal rotation of the support plate 8 by the cooperation of the limiting rod 903 and the limiting hole 905.

[0043] In some specific embodiments, the support plate lifting drive can be a support plate lifting rotary handle or a drive motor. The support plate lifting drive can drive the support threaded rod 902 to rotate, and the cooperation of the limiting rod 903 and the limiting hole 905 can restrict the horizontal rotation of the support plate 8, so that the rotation of the support threaded rod 902 can drive the connecting column 901 and the support plate 8 to move up and down.

[0044] As a preferred implementation method, such as Figure 10 As shown, both the support column 901 and the limiting rod 903 are hinged to the upper surface of the support plate 8, and the axis of the hinge between the support column 901 and the support plate 8 and the axis of the hinge between the limiting rod 903 and the support plate 8 coincide. When the ground that abuts against the support plate 8 is uneven, the support plate 8 can rotate relative to the support column 901, which is beneficial for the support plate 8 to fit with the ground and improves the overall stability of the device.

[0045] In a preferred embodiment, the support plate lifting drive can be a transmission structure to achieve transmission between the lifting threaded rod 702 and the support threaded rod 902. When the lifting threaded rod 702 rotates, it drives the support threaded rod 902 to rotate via the transmission structure. This, in turn, simultaneously moves the coil 2 downwards to the target height via the coil lifting mechanism 7, driving the support plate 8 downwards to contact the ground, thus improving exploration efficiency. The mobile frame 1 can be fixed while adjusting the height of the coil 2, improving the stability of the ground transient electromagnetic exploration device during use, reducing exploration result deviations caused by the device's own movement and vibration noise, and improving the signal-to-noise ratio and data quality. After detection at one measuring point, the support plate 8 needs to be retracted before moving to another measuring point. During the retraction of the support plate 8, the coil 2 automatically retracts upwards, preventing collision damage to the coil 2 during the movement of the mobile frame 1.

[0046] like Figure 1 As shown, the support plate lifting drive component of this embodiment includes a first bevel gear 11 sleeved on the lifting threaded rod 702, a bracket 10 mounted on the upper surface of the mobile frame 1, a transmission rod 15 rotatably connected to the bracket 10, a second bevel gear 12 meshing with the first bevel gear 11, a third bevel gear 13 meshing with the third bevel gear 13, and a fourth bevel gear 14 meshing with the third bevel gear 13. The second bevel gear 12 and the third bevel gear 13 are respectively connected to the two ends of the rotating rod 15, and the fourth bevel gear 14 is connected to the support threaded rod 902, and the fourth bevel gear 14 is coaxial with the support threaded rod 902.

[0047] like Figure 1 As shown, while the lifting drive unit drives the lifting threaded rod 702 to rotate, the first bevel gear 11 rotates synchronously with the lifting threaded rod 702. The first bevel gear 11 drives the second bevel gear 12, which meshes with the first bevel gear 11, thereby driving the transmission rod 15 and the third bevel gear 13 to rotate, and further driving the fourth bevel gear 14, which meshes with the third bevel gear 13, and the support threaded rod 902, which is fixedly connected to the fourth bevel gear 14, to rotate, thus realizing the lifting and lowering of the support plate 8. In some specific embodiments, such as Figure 1 As shown, the ground transient electromagnetic exploration device is equipped with multiple support plate drive components. The multiple support plate drive components share a first bevel gear 11, and the second bevel gears 12 of the multiple support plate drive components mesh with the same first bevel gear 11.

[0048] In a preferred embodiment, the connecting post 901 includes a connecting post body 906, a spring 907, and a support post 908. A support threaded hole 904 is formed at the top of the connecting post body 906, and a sliding groove 909 is formed at the bottom of the connecting post body 906. A limiting slider 9010 is formed at the top of the support post 908. The limiting slider 9010 is slidably disposed in the sliding groove 909, and a stop portion 9011 for stopping the limiting slider 9010 is formed at the bottom of the sliding groove 909. The two ends of the spring 907 abut against the top surface of the limiting slider 9010 and the top surface of the sliding groove 909, respectively. In this embodiment, there is a height difference between the transceiver coil 2 and the support plate 8. When the transceiver coil 2 and the support plate 8 are in their retracted state, the transceiver coil 2 is higher than the support plate 8. When the transceiver coil 2 and the support plate 8 descend, the support plate 8 first touches the ground. When the transceiver coil 2 needs to continue descending after the support plate 8 touches the ground, the spring 907 can be compressed, and the connecting column body 906 can move further downward without hindering the rotation of the support threaded rod 902. Consequently, it will not hinder the rotation of the support plate lifting drive and the lifting threaded rod 702. Therefore, after the support plate 8 is in contact with the ground, the lifting transmission handle 703 can be further rotated to drive the connecting plate 4 and the transceiver coil 2 to move downward, so that the transceiver coil 2 can be as close to the ground as possible, thereby maximizing the shallow signal strength during exploration and thus maximizing the exploration accuracy.

[0049] In some specific embodiments, the ground transient electromagnetic exploration device also includes a first rotating sleeve 20 and a second rotating sleeve 21. The first rotating sleeve 20 is fixedly connected to the top of the first bevel gear 11, and the top of the outer wall of the second rotating sleeve 21 is fixedly connected to the third bevel gear 13.

[0050] The present invention is as follows Figures 1 to 11 The operation of the ground transient electromagnetic exploration device in the illustrated embodiment is as follows: During operation, the operator moves the mobile frame 1 via the universal wheels 19 using the handle 17. When the device is needed for exploration at the target location, the operator can rotate the pitch adjustment threaded rod 501 using the pitch adjustment handle 507, which in turn moves the slider 503 along the length of the pitch adjustment threaded rod 501. When the operator rotates the pitch adjustment handle 507 and moves the slider 503 along the pitch adjustment threaded rod 507, the connecting rod 504 causes the transceiver coil 2 to rise and fall on the side away from the first rotating rod 505, causing the transceiver coil 2 to rotate as a whole through the hinge shaft between the first rotating rod 505 and the second rotating rod 506, thereby adjusting the overall pitch angle of the transceiver coil 2.

[0051] Simultaneously, the operator can rotate the worm gear 601 via the horizontal angle adjustment handle 604, which in turn drives the worm wheel sleeve 603 meshing with the worm gear 601 and the rotating ring 602 fixedly connected to the worm wheel sleeve 603 to rotate. The guide rod 606 can drive the guide sleeve 605 to rotate, which in turn drives the connecting plate 4 fixedly connected to the guide sleeve 605 to rotate, further driving the transceiver coil 2 to rotate, thereby adjusting the horizontal angle of the transceiver coil 2. By adjusting the horizontal and pitch angles of the transceiver coil 2, the exploration angle of the transceiver coil 2 can be adjusted.

[0052] After the pitch and horizontal angles of the transceiver coil 2 are adjusted, the operator can rotate the lifting handle 703, which in turn drives the first rotating sleeve 20 and the lifting threaded rod 702 to rotate. A positioning hole 706 is formed on the outer extension plate 707 at the upper end of the lifting threaded cylinder 701. The positioning rod 704, which is fixedly connected to the mobile frame 1, is inserted into the positioning hole 706. This prevents the lifting threaded cylinder 701 from rotating synchronously when the lifting threaded rod 702 rotates. Thus, the rotation of the lifting threaded rod 702 can drive the lifting threaded cylinder 701 and the connecting plate 4, which is rotated and connected to the lifting threaded cylinder 701, to descend along the lifting threaded rod 702, so that the transceiver coil 2 is as close to the ground as possible. Then, the transient electromagnetic instrument 3 and the transceiver coil 2 are used to explore the ground. The transceiver coil 2 being as close to the ground as possible can maximize the shallow signal strength during exploration, thereby maximizing the exploration accuracy. When the operator rotates the lifting handle 703, the connecting plate 4 descends. Simultaneously, the first bevel gear 11, which is fixedly connected to the outer wall of the first rotating sleeve 20, rotates synchronously, driving the second bevel gear 12, which meshes with the first bevel gear 11, to rotate. This, in turn, drives the transmission rod 15 and the third bevel gear 13 to rotate, further driving the fourth bevel gear 14, which meshes with the third bevel gear 13, and the second rotating sleeve 21, which is fixedly connected to the fourth bevel gear 14, to rotate. This causes the supporting threaded rod 902 to rotate synchronously, and further drives the connecting column body 906 to descend through the supporting threaded hole 904. When the supporting plate 8 descends to the ground, it provides support for the entire device, thereby minimizing the possibility of the entire device moving on its own. Meanwhile, since both the limiting slider 9010 and the limiting rod 903 are rotatably connected to the support plate 8, when the support plate 8 touches the ground and the ground is uneven, the support plate 8 can rotate by itself at a certain angle to increase the contact area with the ground, thereby further improving the overall stability of the device when the support plate 8 touches the ground. Furthermore, there is a height difference between the transceiver coil 2 and the support plate 8. The transceiver coil 2 is higher than the support plate 8. When the transceiver coil 2 and the support plate 8 descend, the support plate 8 first touches the ground. When the transceiver coil 2 needs to continue descending after the support plate 129 touches the ground, the operator continues to rotate the lifting handle 64 to drive the connecting plate 4 and the transceiver coil 2 to descend. At this time, the connecting column body 906 continues to descend, the limit slider 9010 slides along the slide groove 909 and compresses the spring 907. After the exploration is completed, the staff will turn the lifting handle 703 again, which will drive the first rotating sleeve 20 and the lifting threaded rod 702 to rotate, and further drive the lifting threaded cylinder 701 and the connecting plate 4 connected to the lifting threaded cylinder 701 to rise along the lifting threaded rod 702. At the same time, the first bevel gear 11 fixedly connected to the outer wall of the first rotating sleeve 20 will rotate synchronously, and drive the second bevel gear 12 meshing with the first bevel gear 11 to rotate, which will drive the transmission rod 15 and the third bevel gear 13 to rotate, and further drive the fourth bevel gear 14 meshing with the third bevel gear 13 and the second rotating sleeve 21 fixedly connected to the fourth bevel gear 14 to rotate. The support threaded rod 902 will rotate synchronously, and further drive the connecting column 901 to rise through the support threaded hole 904 until the support plate 8 is away from the ground. Then the staff will push the mobile frame 1 through the caster wheels 10 to move it again by moving the handle 17.

[0053] As can be seen from the above description, the advantages of the present invention are: First, the ground transient electromagnetic exploration device can assist workers in moving the transceiver coil, adjusting the pitch and horizontal angles of the transceiver coil, and adjusting the transceiver coil to maintain optimal coupling with the ground, thereby improving work efficiency and the accuracy of exploration results.

[0054] Second, a support plate is set up to support the entire device, preventing the device from moving on its own, improving the stability of the device during use, reducing the deviation of results caused by the device moving on its own and vibration noise, and improving the signal-to-noise ratio and data quality.

[0055] The various embodiments of the present invention have now been described in detail. To avoid obscuring the concept of the invention, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0056] While specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of the invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A ground transient electromagnetic exploration device, characterized in that, include: Mobile frame (1); Transceiver coil (2); A transient electromagnetic instrument (3) electrically connected to the transceiver coil (2); and The adjustment mechanism is connected to the mobile frame (1) through the adjustment mechanism. The adjustment mechanism includes a horizontal angle adjustment mechanism (6) for adjusting the horizontal angle of the transceiver coil (2), a pitch angle adjustment mechanism (5) for adjusting the pitch angle of the transceiver coil (2), and a coil lifting mechanism (7) for adjusting the relative height of the transceiver coil (2) and the ground.

2. The ground transient electromagnetic exploration device according to claim 1, characterized in that, The adjustment mechanism also includes a connecting plate (4). The transceiver coil (2) is connected to the connecting plate (4) through the pitch angle adjustment mechanism (5). The connecting plate (4) is connected to the mobile frame (1) through the coil lifting mechanism (7) and the horizontal angle adjustment mechanism (6).

3. The ground transient electromagnetic exploration device according to claim 2, characterized in that, The bottom of the connecting plate forms a frame structure (401). The pitch angle adjustment mechanism (5) includes a pitch adjustment threaded rod (501) rotatably disposed in the frame structure (401), a slide rod (502), a slider (503), a connecting rod (504), a first rotating rod (505), a second rotating rod (506), and a pitch angle driving component for driving the pitch adjustment threaded rod (501) to rotate. The pitch adjustment threaded rod (501) and the slide rod (502) are parallel to each other. A pitch adjustment threaded hole (508) and a slide rod guide hole (509) are formed on the slider (503). The pitch adjustment threaded rod (501) and the pitch adjustment threaded hole (508) are threaded together. The slider (503) slides along the slide rod (502) through the guide hole (509). The bottom of the first rotating rod (505) is connected to the transceiver coil (2), and the top of the second rotating rod (506) is connected to the connecting plate (4). The top of the first rotating rod (505) and the bottom of the second rotating rod (506) are hinged. The two ends of the connecting rod (504) are respectively hinged to the slider (503) and the transceiver coil (2). The hinge axis between the connecting rod (504) and the slider (503), the hinge axis between the connecting rod (504) and the transceiver coil (2), and the hinge axis between the first rotating rod (505) and the second rotating rod (506) are parallel to each other.

4. The ground transient electromagnetic exploration device according to claim 2, characterized in that, The horizontal angle adjustment mechanism (6) includes a worm (601) rotatably connected to the mobile frame (1), a rotating ring (602) horizontally and rotatably connected to the mobile frame (1), a worm gear sleeve (603) fixedly connected to the outer wall of the rotating ring (602), a horizontal angle drive for driving the worm (601) to rotate, a plurality of guide sleeves (605) and a plurality of guide rods (606) slidably disposed in the corresponding guide sleeves (605). The worm gear sleeve (603) meshes with the worm (601). One of the guide rods (606) and the guide sleeves (605) is connected to the lower surface of the rotating ring (602) and the other is connected to the upper surface of the connecting plate (4). The guide rods (606) are slidably disposed in the guide sleeves (605).

5. The ground transient electromagnetic exploration device according to claim 4, characterized in that, The coil lifting mechanism (7) includes a lifting threaded cylinder (701) rotatably connected to the connecting plate (4), a lifting threaded rod (702), a lifting drive for driving the lifting threaded rod (702) to rotate, and a positioning rod (704) connected to the mobile frame (1). The upper surface of the lifting threaded cylinder (701) forms a lifting threaded hole (705) for the lifting threaded rod (702) to be threadedly connected. A positioning hole (706) is formed on the lifting threaded cylinder (701). The positioning rod (704) is disposed in the positioning hole (706), and the guide rod (606), the positioning rod (704), and the lifting threaded rod (702) are parallel to each other.

6. The ground transient electromagnetic exploration device according to claim 5, characterized in that, It also includes at least two support plates (8) and at least two support plate lifting mechanisms (9) for adjusting the relative height of the support plates (8) with respect to the ground. The support plates (8) are arranged on both sides of the mobile vehicle (1) through the support plate lifting mechanisms (9).

7. The ground transient electromagnetic exploration device according to claim 6, characterized in that, The support plate lifting mechanism (9) includes a connecting column (901), a support threaded rod (902), a support plate lifting drive for driving the support threaded rod (902) to rotate, and at least two limiting rods (903). The top of the connecting column (901) forms a support threaded hole (904) for the support threaded rod (902) to be threadedly connected. The bottom ends of the connecting column (901) and the limiting rods (903) are both connected to the upper surface of the support plate (8). The moving frame (1) forms a limiting hole (905) that is adapted to the limiting rod (903) so that the horizontal rotation of the support plate (8) is restricted by the cooperation of the limiting rod (903) and the limiting hole (905).

8. The ground transient electromagnetic exploration device according to claim 7, characterized in that, The support column (901) and the limiting rod (903) are both hinged to the upper surface of the support plate (8), and the axis of the hinge axis between the support column (901) and the support plate (8) and the axis of the hinge axis between the limiting rod (903) and the support plate (8) coincide.

9. The ground transient electromagnetic exploration device according to claim 7, characterized in that, The support plate lifting drive includes a first bevel gear (11) sleeved on the lifting threaded rod (702), a bracket (10) mounted on the mobile frame (1), a transmission rod (15) rotatably connected to the bracket (10), a second bevel gear (12) meshing with the first bevel gear (11), a third bevel gear (13), and a fourth bevel gear (14) meshing with the third bevel gear (13). The second bevel gear (12) and the third bevel gear (13) are respectively connected to the two ends of the rotating rod (15). The fourth bevel gear (14) is connected to the support threaded rod (902), and the fourth bevel gear (14) is coaxial with the support threaded rod (902).

10. The ground transient electromagnetic exploration device according to claim 9, characterized in that, The connecting column (901) includes a connecting column body (906), a spring (907), and a support column (908). The top of the connecting column body (906) forms the support threaded hole (904), and the bottom of the connecting column body (906) forms a sliding groove (909). The top of the support column (908) forms a limiting slider (9010). The limiting slider (9010) is slidably disposed in the sliding groove (909), and the bottom of the sliding groove (909) forms a stop part (9011) for stopping the limiting slider (9010). The two ends of the spring (907) abut against the top surface of the limiting slider (9010) and the top surface of the sliding groove (909), respectively.

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