Transient electromagnetic exploration equipment capable of being carried by unmanned aerial vehicle

Abstract

The invention belongs to the field of electromagnetic exploration equipment, and provides transient electromagnetic exploration equipment capable of being carried by an unmanned aerial vehicle, the transient electromagnetic exploration equipment comprises an unmanned aerial vehicle body, a transient electromagnetic instrument, a lifting rope assembly, a carrying assembly and an induction coil, a supporting assembly is arranged at the bottom of a supporting leg, and the supporting assembly comprises a first U-shaped rod and a second U-shaped rod which are distributed in an up-down staggered mode; the first U-shaped rod is connected with the lifting rope assembly; the carrying assembly comprises a central main plate and two laminated plate frames distributed in a cross shape, the telecentric ends of the laminated plate frames are provided with cylindrical end heads, the cylindrical end heads are provided with outer circle coil positioning assemblies, the induction coils form a circular coil through the outer circle coil positioning assemblies, the side faces of the cylindrical end heads are provided with outer through holes, and the outer through holes are communicated with the cylindrical end heads. An inner through hole is formed in the side surface of the laminated plate frame; and the induction coil forms a square coil through the outer through hole and the inner through hole. The device is reasonable in design, can be suitable for coils in various shapes, is beneficial to improving the comprehensive efficiency of investigation and improving the landing and take-off safety, and is suitable for large-scale popularization.

Description

Technical Field

[0001] The present invention belongs to the field of electromagnetic exploration equipment, and particularly relates to a transient electromagnetic exploration equipment that can be carried by an unmanned aerial vehicle (UAV). Background Art

[0002] Transient electromagnetic exploration is a geophysical exploration method based on the principle of electromagnetic induction. By studying the electromagnetic response characteristics of underground media, it is used to detect geological structures and mineral resources. The time-domain airborne electromagnetic detection system consists of on-board equipment such as airborne data acquisition and recording computers, and external transmitting and receiving coils suspended outside the cabin. The transmitting device controls the current in the transmitting coil to emit an electromagnetic field (primary field) that changes with time into the ground. The primary field induces an electric current in conductive objects underground, and the induced current generates an induced electromagnetic field (secondary field). The secondary induced electromagnetic field decays with time, and the induced voltage components in all directions of the secondary field can be received through the receiving coil. The secondary field is related to the electromagnetic properties of underground substances. By analyzing the induced voltage of the received secondary field, parameters such as the dielectric constant, conductivity, and magnetic permeability of underground media can be inferred.

[0003] Currently, for helicopters or UAVs carrying time-domain airborne electromagnetic measurement systems, the coils suspended below them need to maintain a circular, square, or polygonal shape, such as the full-airborne transient electromagnetic detection system and method based on a three-component hollow coil disclosed in CN115728831A, an airborne transient electromagnetic coil mounting structure disclosed in CN104443415A, and an electromagnetic coil for helicopter time-domain airborne exploration applications disclosed in CN109239789A. However, generally, the coils mounted on these mounting structures can only present one shape in the end. If the shape of the actual coil cannot be adjusted when conducting electromagnetic exploration in different scenarios, it will increase the exploration error caused by terrain drift, resulting in an increase in the range of delineated ore sources, and thus affecting the comprehensive exploration efficiency. Secondly, the suspension rope of the UAV is hung on its leg through a sling. Since both the sling and the leg are in direct contact with the ground, it is easy to generate an inclination angle at the moment of landing and takeoff, affecting the safety of landing and takeoff. Summary of the Invention

[0004] In view of the technical problems existing in the above exploration system, the present invention provides a transient electromagnetic exploration equipment that can be carried by a UAV, which is reasonably designed, can be applicable to coils of various shapes, is beneficial to improving the comprehensive exploration efficiency, and improves the safety of landing and takeoff.

[0005] To achieve the above object, the technical solution adopted by the present invention is that the present invention provides a transient electromagnetic exploration device that can be carried by a drone, including a drone body. A transient electromagnetic instrument is provided at the bottom of the drone body. A suspension rope assembly is provided on the legs of the drone body. A carrying assembly is provided at the end of the suspension rope assembly. An induction coil is provided on the carrying assembly. A support assembly is provided at the bottom of the leg. The support assembly includes a first U-shaped rod and a second U-shaped rod that are distributed in a staggered manner up and down. A vertical transition section is provided at the ends of the first U-shaped rod and the second U-shaped rod. The first U-shaped rod is connected to the suspension rope assembly. The carrying assembly includes a central main board. Two laminated board frames distributed in a cross shape are provided on the central main board. Four cylindrical end heads that are centrosymmetrically distributed about the central main board are provided at the remote ends of the laminated board frames. A connection hole is provided at the center of the cylindrical end head. An outer circular coil positioning assembly is provided on the cylindrical end head. The induction coil forms a circular coil through the outer circular coil positioning assembly. An outer through hole is provided on the side surface of the cylindrical end head. An inner through hole is provided on the side surface of the laminated board frame. The induction coil forms a square coil through the outer through hole and the inner through hole.

[0006] Preferably, an O-shaped shell sleeve is provided between the eight outer circular coil positioning assemblies. A break is provided on the shell sleeve. The cross section of the shell sleeve is C-shaped.

[0007] Preferably, the central main board is provided with a positioning shoulder. The upper surface and the lower surface of the positioning shoulder are respectively nested and matched with the two laminated board frames. A plurality of positioning screws are provided on the positioning shoulder. Positioning holes that cooperate with the positioning screws are provided on the laminated board frames. A positioning nut for locking the laminated board frame and the central main board is provided at the end of the positioning screw.

[0008] Preferably, the laminated board frame includes a cross-shaped board. A positioning groove for cooperating with the positioning shoulder is provided at the center of the cross-shaped board. An installation sink for nesting and cooperating with another laminated board frame is also provided at the center of one of the cross-shaped boards. The cylindrical end heads on the two laminated board frames are located on the same horizontal plane. The cross-shaped board includes two pairs of V-shaped side rods. End rods are provided at the ends of the side rods. The end rods, the cylindrical end heads and the side rods are connected in a transitional manner.

[0009] Preferably, a convex rib plate is provided at the waist position of the side rod. The inner through hole is provided on the convex rib plate.

[0010] Preferably, the hole wall of the outer through hole is an arc-shaped curved surface.

[0011] Preferably, the outer circular coil positioning assembly includes an outer clamping plate and an inner clamping plate. The outer clamping plate clamps the cylindrical end from the distal center direction. A baffle is provided at the distal center end of the outer clamping plate. An arc transmission hole for passing through the induction coil is provided between the baffle and the side surface of the outer clamping plate. The inner clamping plate clamps the end rod, the cylindrical end, and the side rod from the proximal center direction and forms a jacket connection relationship with the outer clamping plate.

[0012] Preferably, the outer clamping plate includes two hollow Ω-shaped segments spaced vertically. An outer arc segment for cooperating with the side surface of the cylindrical end is provided between the hollow Ω-shaped segments. The end side surface of the hollow Ω-shaped segment is parallel to the side rod. An inner arc segment is provided at the end of the hollow Ω-shaped segment for sleeving the edge of the inner clamping plate.

[0013] Preferably, the inner clamping plate includes two solid Ω-shaped segments spaced vertically. The space between the solid Ω-shaped segments cooperates with the cylindrical end for clamping. The side of the solid Ω-shaped segment is nested with the hollow Ω-shaped segment. An arc-shaped limiting clamping segment is provided between the solid Ω-shaped segments. Both ends of the limiting clamping segment are clamped with the inner wall of the side rod. The top and bottom surfaces of the limiting clamping segment are nested with the inner arc segment.

[0014] Preferably, a main connection hole corresponding to the center of the cylindrical end is provided on the inner clamping plate. A side connection hole corresponding to the outer clamping plate is provided near the end of the inner clamping plate. A main bolt is provided in the main connection hole, and a side bolt is provided in the side connection hole.

[0015] Preferably, the lifting rope assembly includes a main lifting rope and two pairs of lifting tools provided on different first U-shaped rods. A plurality of connection balls are provided on the main lifting rope at intervals along its length direction. The plurality of connection balls at least include a first connection ball, a second connection ball, and a third connection ball distributed sequentially from top to bottom. The lifting tool is provided with an upper lifting rope connected to the first connection ball. A balance rope is provided on the upper lifting rope and is connected downward to the third connection ball. A plurality of lower lifting ropes are provided on the second connection ball, and the ends of the lower lifting ropes are connected to the lifting lugs provided on the carrying assembly. The bottom of the main lifting rope is connected to the inner support plate provided on the central main board.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0017] A transient electromagnetic exploration device that can be carried by a drone provided by the present invention. The carrying component is applicable to a square induction coil, and by installing an outer circular coil positioning component, it is applicable to a circular induction coil, improving the applicability and utilization rate of the device, and facilitating the reduction of exploration errors. The suspension rope component under the drone body can avoid the connection node between the suspension rope component and the leg from directly contacting the ground through the support component with a stepped design, which is beneficial to improving the takeoff and landing safety of the drone body. The device is reasonably designed, can be applicable to coils of various shapes, is beneficial to improving the comprehensive exploration efficiency and improving the landing and takeoff safety, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 An isometric view of a transient electromagnetic exploration device that can be carried by a drone provided for the embodiment;

[0020] Figure 2 A front view of a transient electromagnetic exploration device that can be carried by a drone provided for the embodiment;

[0021] Figure 3 A perspective view of the carrying component and the outer circular coil positioning component provided for the embodiment;

[0022] Figure 4 A top view of the carrying component and the outer circular coil positioning component provided for the embodiment;

[0023] Figure 5 An exploded view of the carrying component provided for the embodiment;

[0024] Figure 6 A perspective view of the laminated plate rack provided for the embodiment;

[0025] Figure 7 A perspective view of the support component provided for the embodiment;

[0026] Figure 8 A perspective view of the outer circular coil positioning component provided for the embodiment;

[0027] Figure 9 An exploded view of the outer circular coil positioning component provided for the embodiment;

[0028] Figure 10 A perspective view of the shell sleeve provided for the embodiment;

[0029] In the above figures: 1. UAV body; 2. transient electromagnetic instrument; 3. suspension rope assembly; 31. main suspension rope; 32. sling; 33. connecting ball; 331. first connecting ball; 332. second connecting ball; 333. third connecting ball; 34. upper suspension rope; 35. balance rope; 36. lower suspension rope; 37. lifting lug; 38. inner support plate; 4. carrying assembly; 41. central main board; 411. positioning shoulder; 42. laminated plate rack; 421. cylindrical end; 422. connecting hole; 423. outer perforation; 424. inner perforation; 425. cross-shaped plate; 4251. positioning groove; 4252. mounting counterbore; 4253. side rod; 4254. end rod; 4255. ribbed plate; 43. positioning screw; 44. positioning nut; 5. induction coil; 6. leg; 7. support assembly; 71. first U-shaped rod; 72. second U-shaped rod; 73. vertical transition section; 8. outer circular coil positioning assembly; 81. outer clamping plate; 811. hollow Ω-shaped section; 812. outer arc section; 813. inner arc section; 82. inner clamping plate; 821. solid Ω-shaped section; 822. limit clamping section; 823. main connection hole; 824. side connection hole; 83. baffle; 84. arc transmission hole; 85. main bolt; 86. side bolt; 9. shell sleeve. Detailed implementation manners

[0030] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other. For the convenience of narration, the words "upper", "lower", "left" and "right" as used below only represent the same directions as the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

[0031] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0032] Embodiment, such as Figures 1-10As shown in the figure, a transient electromagnetic exploration device that can be carried by a drone provided by the present invention includes a drone body 1. A transient electromagnetic instrument 2 is provided at the bottom of the drone body 1. A suspension rope assembly 3 is provided on the leg 6 of the drone body 1. An end of the suspension rope assembly 3 is provided with a carrying assembly 4, and an induction coil 5 is provided on the carrying assembly 4. Among them, the transient electromagnetic instrument 2 has a basic structure based on wireless control. A protective housing is provided outside the transient electromagnetic instrument 2. A suspension rope assembly 3 and a connecting wire for establishing an electrical connection relationship with the induction coil 5 are led out from the center of the protective housing. In order to improve the stability of the device at the moment of takeoff and landing, the present invention provides a support assembly 7 with a stepped design at the bottom of the leg 6. For example, the support assembly 7 includes a first U-shaped rod 71 and a second U-shaped rod 72 that are staggered up and down. A vertical transition section 73 is provided at the end of the first U-shaped rod 71 and the second U-shaped rod 72. The first U-shaped rod 71 is connected to the suspension rope assembly 3. Among them, both ends of the first U-shaped rod 71 are inserted into the pipe fittings provided at the bottom of the leg 6, and both ends of the first U-shaped rod 71 are kept at a certain vertical interval distance from the second U-shaped rod 72 through the vertical transition section 73. In this way, although the sling 32 is installed on the first U-shaped rod 71, since the contact node between the sling 32 and the first U-shaped rod 71 does not directly contact the ground or the platform of the drone body 1, the second U-shaped rod 72 can be relatively stably supported at the takeoff level and the landing level at the moment of takeoff and landing of the drone body 1, thereby improving the safety of the device at the moment of takeoff and landing.

[0033] In order to improve the mounting performance and applicability of the device to the induction coil 5, the mounting component 4 provided by the present invention includes a central main board 41. Two stacking plate frames 42 distributed in a cross shape are arranged on the central main board 41. Four cylindrical end heads 421 symmetrically distributed about the central main board 41 are arranged at the telecentric ends of the stacking plate frames 42. A connection hole 422 is arranged at the center of the cylindrical end head 421. An outer circular coil positioning component 8 is arranged on the cylindrical end head 421. The induction coil 5 forms a circular coil through the outer circular coil positioning component 8. An outer through hole 423 is arranged on the side surface of the cylindrical end head 421, and an inner through hole 424 is arranged on the side surface of the stacking plate frame 42. The induction coil 5 forms a square coil through the outer through hole 423 and the inner through hole 424. By assembling the two stacking plate frames 42 on the central main board 41, the mounting component 4 provided by the present invention can form 8 mounting nodes. The outer through holes 423 of 4 spaced mounting nodes can be used to pass the induction coil 5, and the inner through hole 424 limits the induction coil 5 at the side position thereof, so that it can be applicable to the square induction coil 5. Further, by installing the outer circular coil positioning component 8, 8 wire threading positions can be formed outside the two stacking plate frames 42, and the ends of the stacking plate frames 42 can support the whole body of the coil, so that it can be applicable to an approximately circular induction coil 5, thereby improving the applicability and utilization rate of the device, meeting the needs of induction coils 5 of different shapes, and being beneficial to reducing the exploration error. It should be noted that the mounting component 4 and the outer circular coil positioning component 8 provided by the device are made of non-metallic materials. On the one hand, it can avoid affecting the transceiver performance of the induction coil 5. On the other hand, it can control the suspension quality of the suspension rope component 3, which is beneficial to reducing the working load of the UAV body 1 and improving the stability of the UAV body 1 during the aerial exploration process.

[0034] In order to improve the limiting effect of the device on the circular coil after installing the outer circular coil positioning component 8, as Figure 10 shown, an O-shaped shell sleeve 9 is arranged between the eight outer circular coil positioning components 8 provided by the present invention. A break is arranged on the shell sleeve 9, and the cross section of the shell sleeve 9 is C-shaped. Among them, the length of the break is less than the minimum spacing distance between two outer circular coil positioning components 8, and the design of the break facilitates passing the shell sleeve 9 through the outer circular coil positioning components 8 in sequence. Without additional fixation, the shell sleeve 9 can form a stable circle, and the induction coil 5 can be press-fitted inside the shell sleeve 9, and the shell sleeve 9 forms a support for the induction coil 5, so as to ensure that the induction coil 5 can form a relatively regular circular induction range.

[0035] As Figure 5As shown in the figure, in order to improve the assembly performance of the mounted component 4, the central main board 41 provided by the present invention is provided with a positioning shoulder 411. The upper surface and the lower surface of the positioning shoulder 411 are respectively nested and matched with two stacked plate frames 42. A plurality of positioning screws 43 are arranged on the positioning shoulder 411, and positioning holes matched with the positioning screws 43 are arranged on the stacked plate frame 42. A positioning nut 44 for locking the stacked plate frame 42 and the central main board 41 is arranged at the end of the positioning screw 43. Among them, the positioning screw 43 and the positioning nut 44 are used to lock the relative positional relationship between the two stacked plate frames 42 and the central main board 41, and the nested manner of the stacked plate frame 42 and the central main board 41 can effectively shorten the assembly spacing between the two stacked plate frames 42, providing a basic structural guarantee for the two stacked plate frames 42 to remain on the same level after assembly.

[0036] Further, as Figures 3-6 shown in the figure, the stacked plate frame 42 provided by the present invention includes a cross-shaped plate 425. A positioning groove 4251 for cooperating with the positioning shoulder 411 is arranged at the center of the cross-shaped plate 425. An installation sink 4252 for nested cooperation with another stacked plate frame 42 is also arranged at the center of one of the cross-shaped plates 425. The cylindrical ends 421 on the two stacked plate frames 42 are on the same level. The cross-shaped plate 425 includes two pairs of side rods 4253 in a V shape. End rods 4254 are arranged at the ends of the side rods 4253. The end rods 4254, the cylindrical ends 421 and the side rods 4253 are connected in a transitional manner. Among them, the positioning groove 4251 can make the stacked plate frame 42 sleeved on the positioning shoulder 411, reducing the bearing shear force at the root of the positioning screw 43 to a certain extent. The most important thing is that it can shorten the assembly spacing between the two stacked plate frames 42. Coupled with the design of the installation sink 4252, it can make multiple wiring nodes after the two stacked plate frames 42 are assembled on the same level, so as to ensure its mounting performance for the induction coil 5 and meet the shape requirements of the induction coil 5.

[0037] In order to improve the practicability of the mounted component 4 for the square induction coil 5, a ribbed plate 4255 is arranged at the waist position of the side rod 4253 provided by the present invention. The ribbed plate 4255 is located on the path where the side of the induction coil 5 passes. An inner through hole 424 is arranged on the ribbed plate 4255. This not only ensures the wiring requirements of the induction coil 5, keeps it on the same level as the outer through hole 423, makes the induction coil 5 form a relatively regular square structure after passing through the inner through hole 424 and the outer through hole 423, but also can limit the side of the induction coil 5, preventing the shape of the induction coil 5 from deviating significantly; at the same time, the ribbed plate 4255 can also ensure the structural strength of the side rod after opening the hole and improve the bending resistance of the stacked plate frame 42.

[0038] Considering that the induction coil 5 has a certain diameter and is thicker than ordinary wires, in order to improve its transitional performance with the mounted component 4 at the four corner positions, the hole wall of the outer perforation 423 provided by the present invention is an arc-shaped curved surface, thereby increasing the radius of curvature of the induction coil 5 at the corner positions, which is beneficial to ensuring the stability of the square aerial scanning area formed by the induction coil 5.

[0039] In order to improve the matching performance between the outer circular coil positioning component 8 and the induction coil 5, as Figure 8 and Figure 9 shown, the outer circular coil positioning component 8 provided by the present invention includes an outer clamping plate 81 and an inner clamping plate 82. The outer clamping plate 81 clamps the cylindrical end 421 from the direction of the far center end. A baffle 83 is provided at the far center end of the outer clamping plate 81. An arc-shaped transmission hole 84 for passing through the induction coil 5 is provided between the baffle 83 and the side surface of the outer clamping plate 81. The arc-shaped transmission hole 84 ensures the smoothness of the induction coil wiring. The inner clamping plate 82 clamps the end rod 4254, the cylindrical end 421, and the side rod 4253 from the direction of the near center end and forms a jacket connection relationship with the outer clamping plate 81. Among them, the outer clamping plate 81 and the inner clamping plate 82 are inserted into each other from the outside and inside of the laminated plate frame 42 respectively, and the insertion range is located at the position of the cylindrical end 421. The outer clamping plate 81 and the inner clamping plate 82 that complete the jacket connection relationship just clamp the cylindrical end 421 and will not separate under the action of non-direct external forces, thereby establishing an effective wiring path for the induction coil 5; and the outer circular coil positioning component 8 has a good quick connection function, which is convenient for quick disassembly and assembly outdoors and is beneficial to improving the actual utilization rate of the device.

[0040] To improve the stability of the outer circular coil positioning component 8, the outer clamping plate 81 provided by the present invention includes two hollow Ω-shaped segments 811 spaced apart vertically. An outer arc segment 812 for cooperating with the side surface of the cylindrical end 421 is provided between the hollow Ω-shaped segments 811. The side surface of the end of the hollow Ω-shaped segment 811 is parallel to the side rod 4253. An inner arc segment 813 is provided at the end of the hollow Ω-shaped segment 811, and the inner arc segment 813 is used to sleeved the edge of the inner clamping plate 82; further, the inner clamping plate 82 includes two solid Ω-shaped segments 821 spaced apart vertically. The space between the solid Ω-shaped segments 821 is clamped and cooperated with the cylindrical end 421, and the side of the solid Ω-shaped segment 821 is nested and cooperated with the hollow Ω-shaped segment 811. An arc-shaped limiting and clamping segment 822 is provided between the solid Ω-shaped segments 821. The two ends of the limiting and clamping segment 822 are clamped and cooperated with the inner wall of the side rod 4253, and the top and bottom surfaces of the limiting and clamping segment 822 are nested and cooperated with the inner arc segment 813. Among them, the inner arc segment 813 of the outer clamping plate 81 can embrace the cylindrical surface of the cylindrical end 421, and the two hollow Ω-shaped segments 811 can press on the surface of the side rod 4253 and press a part of the edge position of the cylindrical end 421; the solid Ω-shaped segment 821 can be inserted into the hollow between the two inner arc segments 813 and expand a certain aperture until the plate surfaces of the two hollow Ω-shaped segments 811 press on the central position of the cylindrical end 421. At the same time, a clamping and positioning relationship is formed between the two ends of the hollow Ω-shaped segment 811 and the two side plates. Coupled with the pressing effect of the inner arc segment 813 on the limiting and clamping segment 822, the situation that the outer circular coil positioning component 8 falls off freely can be effectively avoided, so as to effectively serve to support the circular induction coil 5.

[0041] To improve the clamping reliability between the outer clamping plate 81 and the inner clamping plate 82, a main connection hole 823 corresponding to the center of the cylindrical end 421 is provided on the inner clamping plate 82 provided by the present invention. A side connection hole 824 corresponding to the outer clamping plate 81 is provided at a position near the end of the inner clamping plate 82. A main bolt 85 is provided in the main connection hole 823, and a side bolt 86 is provided in the side connection hole 824. By using the main bolt 85 and the side bolt 86, a stable and reliable clamping relationship can be formed among the outer clamping plate 81, the inner clamping plate 82 and the cylindrical end 421, providing a reliable wire routing node for the induction coil 5.

[0042] As Figure 1 and Figure 2As shown in the figure, in order to improve the suspension performance of the coil and the carrying component 4 of the device in a suspended state, the sling assembly 3 provided by the present invention includes a main sling 31 and two pairs of slings 32 provided on different first U-shaped rods 71. A plurality of connection balls 33 are arranged at intervals along the length direction of the main sling 31. The plurality of connection balls 33 at least include a first connection ball 331, a second connection ball 332, and a third connection ball 333 that are distributed successively from top to bottom. The sling 32 is provided with an upper sling 34 connected to the first connection ball 331. A balance rope 35 is arranged on the upper sling 34, and the balance rope 35 is connected downward to the third connection ball 333. A plurality of lower slings 36 are arranged on the second connection ball 332, and the ends of the lower slings 36 are connected to the sling ears 37 provided on the carrying component 4. The bottom of the main sling 31 is connected to the inner support plate 38 provided on the central main board 41. Among them, the inner support plate 38 is nested and connected with the annular groove on the inner side of the central main board 41; the connection ball 33 can provide a sufficient connection basis for a plurality of rope connection nodes at the same level; the upper sling 34, the balance rope 35, and the main sling 31 form a first umbrella-shaped structure, and the lower sling 36 and the main sling 31 form a second umbrella-shaped structure. Different from single-line suspension, it is beneficial to balance the suspension load, beneficial to control the center of gravity of the device within a reasonable preset range, improve the balance of the drone carrying the whole set of transient electromagnetic equipment for aerial exploration operations, reduce the probability of terrain deviation, and reduce the exploration error.

[0043] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A transient electromagnetic exploration device that can be carried by a drone, comprising a drone body, a transient electromagnetic instrument is arranged at the bottom of the drone body, a suspension rope assembly is arranged on the legs of the drone body, a carrying assembly is arranged at the end of the suspension rope assembly, and an induction coil is arranged on the carrying assembly, characterized in that, A support assembly is provided at the bottom of the outrigger. The support assembly includes first U-shaped rods and second U-shaped rods that are vertically staggered. A vertical transition section is provided at the end of the first U-shaped rod and the second U-shaped rod. The first U-shaped rod is connected to the sling assembly. The carrying assembly includes a central main board. Two laminated plate frames distributed in a cross shape are provided on the central main board. Four cylindrical ends that are centrosymmetrically distributed with respect to the central main board are provided at the remote center end of the laminated plate frame. A connection hole is provided at the center of the cylindrical end. An outer circular coil positioning assembly is provided on the cylindrical end. The induction coil forms a circular coil through the outer circular coil positioning assembly. An outer perforation is provided on the side of the cylindrical end. An inner perforation is provided on the side of the laminated plate frame. The induction coil forms a square coil through the outer perforation and the inner perforation.

2. The transient electromagnetic exploration device that can be carried by a drone according to claim 1, characterized in that An O-shaped shell sleeve is provided between the eight outer circular coil positioning assemblies. A break is provided on the shell sleeve. The cross section of the shell sleeve is C-shaped.

3. The transient electromagnetic exploration device carried by a drone according to claim 2, characterized in that, The central main board is provided with a positioning shoulder. The upper surface and the lower surface of the positioning shoulder are respectively nested and matched with the two laminated plate frames. A plurality of positioning screws are provided on the positioning shoulder. Positioning holes that cooperate with the positioning screws are provided on the laminated plate frame. A positioning nut for locking the laminated plate frame and the central main board is provided at the end of the positioning screw.

4. A transient electromagnetic exploration device that can be carried by a drone according to claim 3, characterized in that, The laminated plate frame includes a cross-shaped plate. A positioning groove for cooperating with the positioning shoulder is provided at the center of the cross-shaped plate. An installation sink for nested cooperation with another laminated plate frame is also provided at the center of one of the cross-shaped plates. The cylindrical ends on the two laminated plate frames are at the same level. The cross-shaped plate includes two pairs of V-shaped side rods. An end rod is provided at the end of the side rod. The end rod, the cylindrical end, and the side rod are transitionally connected.

5. The transient electromagnetic exploration device that can be carried by a drone according to claim 4, characterized in that, A convex rib plate is provided at the waist position of the side rod. The inner perforation is provided on the convex rib plate. The hole wall of the outer perforation is an arc-shaped curved surface.

6. The transient electromagnetic exploration device carried by a drone according to claim 1 or 4, characterized in that, The outer circular coil positioning assembly includes an outer clamping plate and an inner clamping plate. The outer clamping plate clamps the cylindrical end from the remote center end direction. A baffle is provided at the remote center end of the outer clamping plate. An arc-shaped transmission hole for passing through the induction coil is provided between the baffle and the side of the outer clamping plate. The inner clamping plate forms a jacket connection relationship with the outer clamping plate from the proximal center end direction.

7. The transient electromagnetic exploration device carried by a drone according to claim 6, characterized in that, The outer clamping plate includes two hollow Ω-shaped sections that are spaced apart vertically. An outer arc section for cooperating with the side of the cylindrical end is provided between the hollow Ω-shaped sections. The side of the end of the hollow Ω-shaped section is parallel to the side rod. An inner arc section is provided at the end of the hollow Ω-shaped section. The inner arc section is used to sleeve the edge of the inner clamping plate.

8. A transient electromagnetic exploration device that can be carried by a drone according to claim 7, characterized in that, The inner clamping plate includes two solid Ω-shaped sections that are spaced apart vertically. The space between the solid Ω-shaped sections is clamped and matched with the cylindrical end. The side of the solid Ω-shaped section is nested and matched with the hollow Ω-shaped section. An arc-shaped limiting clamping section is provided between the solid Ω-shaped sections. The two ends of the limiting clamping section are clamped and matched with the inner wall of the side rod. The top surface and the bottom surface of the limiting clamping section are nested and matched with the inner arc section.

9. The transient electromagnetic exploration device carried by a drone according to claim 8, characterized in that, The inner splint is provided with a main connection hole corresponding to the center of the cylindrical end. The inner splint is provided with side connection holes corresponding to the outer splint near its end. A main bolt is arranged in the main connection hole, and a side bolt is arranged in the side connection hole.

10. A transient electromagnetic exploration device that can be carried by a drone according to claim 1, characterized in that, The sling assembly includes a main sling and two pairs of slings arranged on different first U-shaped rods. A plurality of connecting balls are arranged on the main sling. The plurality of connecting balls at least include a first connecting ball, a second connecting ball, and a third connecting ball that are distributed in sequence from top to bottom. The sling is provided with an upper sling connected to the first connecting ball. A balance rope is arranged on the upper sling, and the balance rope is connected downward to the third connecting ball. A plurality of lower slings are arranged on the second connecting ball, and the ends of the lower slings are connected to the lifting lugs arranged on the carrying assembly. The bottom of the main sling is connected to the inner support plate arranged on the center main board.

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