A lockable grounding clamp device mounted on a drone and a method for introducing return current from a high-voltage line into the ground

Abstract

The present invention belongs to the technical field of high-voltage line grounding equipment, and more particularly, relates to a lockable grounding clamp device mounted on a drone and a method for grounding a high-voltage line return current. The drone-mounted lockable grounding clamp device can be carried by the drone to complete grounding operations for medium- and high-voltage lines during maintenance, which is time-saving and safe for on-site construction personnel. The unique locking and unlocking mechanism, consisting of a lock cylinder, a clamping claw assembly, a lock tongue driver, and a drone-mounted assembly, allows the lockable grounding clamp device to close the claws of the high-voltage line once it enters the area where the claws engage, effectively locking and connecting the high-voltage line under the action of its own gravity. The locking mechanism is relatively reliable and can only be unlocked by pulling up on the drone-mounted assembly, thus ensuring safe grounding in adverse weather conditions such as strong winds. When the device needs to be removed, it can be unlocked by connecting the drone to the mounting assembly and pulling it up, making unlocking relatively convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-voltage line grounding equipment, and in particular relates to a lockable grounding wire clamp device mounted on an unmanned aerial vehicle and a method for introducing return current in a high-voltage line into the ground. Background Art

[0002] In the power construction industry, when workers need to inspect high-voltage lines, a power outage is usually required. After the high-voltage line is out of power, some return current will still flow through the high-voltage line. At this time, a grounding wire device is needed to lead the return current in the high-voltage line into the ground, otherwise it will pose a personal threat to the workers.

[0003] Traditionally, operators have to climb a tower to attach a grounding clamp to a high-voltage line. This grounding wire, located at the end of the clamp, then directs the return current to the ground. Since high-voltage lines are often transported across multiple lines, ensuring the safety of a given construction section requires grounding wires to be installed on all high-voltage lines at both ends. This requires the operator to climb the tower multiple times to attach the grounding wires, a lengthy construction process and poses significant safety risks to workers working at height.

[0004] UAV-mounted grounding wire devices have appeared in recent years, but the technical solutions have certain defects. For example, it is difficult to unhook after mounting. Another example is that after mounting, it cannot be mechanically locked but relies on spring locking. This method may fall off due to the large swing of the high-voltage line in windy weather, posing a risk to construction workers. Summary of the Invention

[0005] The present invention aims to provide a lockable grounding wire clamp device mounted on an unmanned aerial vehicle and a method for introducing return current from a high-voltage line into the ground, so as to solve the technical problems that the existing grounding wire clamp is inconvenient to lock and unlock the high-voltage line, as well as the unstable locking.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A lockable grounding wire clamp device mounted on an unmanned aerial vehicle is provided, comprising a fuselage and a clamping claw assembly, wherein a cavity is provided in the fuselage, the clamping claw assembly is arranged in the cavity, and a lock core is also provided in the cavity, wherein the lock core comprises a sliding body that can move up and down, and the clamping claw assembly comprises a high-voltage wire claw that can be driven to open and close by the sliding body; a high-voltage wire entry groove is provided at the lower part of the fuselage, and the high-voltage wire entry groove extends into the cavity; the lock core also comprises a lock tongue for limiting the downward movement of the sliding body, and a locking portion corresponding to the lock tongue is provided on the sliding body; a lock tongue driving component for driving the lock tongue to disengage from the locking portion is provided in the cavity, a UAV mounting assembly that can move freely up and down is provided on the fuselage, and the lock tongue driving component is connected to the UAV mounting assembly; a grounding wire connection position is provided at the bottom of the fuselage, and the various movable parts of the lockable grounding wire clamp device are electrically connected by wires.

[0008] Furthermore, the clamping claw assembly also includes a swinging arm swingably arranged in the cavity, and the high-voltage line claw includes a claw seat portion, and the upper and lower sides of the claw seat portion are respectively provided with a first hinge position and a second hinge position, the first hinge position is hinged to the lower end of the swinging arm, and the second hinge position is hinged to the lower end of the sliding body.

[0009] Furthermore, the lock core also includes a lock core seat fixedly arranged in the cavity, the upper end of the swing arm is hinged on the lock core seat, a sliding groove is provided in the lock core seat, the sliding body is arranged in the sliding groove, a sliding guide column is provided in the sliding groove, a sliding guide hole is correspondingly provided in the sliding body, and a reset spring located on the upper side of the sliding body is sleeved on the sliding guide column.

[0010] Furthermore, a lock tongue hole is provided in the lock core seat and is located on the side of the sliding groove. The lock tongue is arranged in the lock tongue hole. The locking portion is a tooth row arranged on the side of the sliding body.

[0011] Furthermore, the lock core also includes a lock tongue swing arm, a lock tongue swing arm hole located on the upper side of the lock tongue hole is provided in the lock core seat, the lock tongue swing arm is hinged in the lock tongue swing arm hole, a lock tongue groove is provided at the bottom of the lock tongue swing arm, the top surface of the lock tongue groove is an inclined surface that gradually decreases from front to back, the lock tongue is hinged in the lock tongue groove, and the lock tongue driving member is used to drive the lock tongue swing arm to swing.

[0012] Furthermore, an inclined hole is provided on the upper portion of the lock tongue swing arm, and the lock tongue driving member is an unlocking cross bar passing through the inclined hole.

[0013] Furthermore, the drone mounting assembly includes a movable plate, a lifting ring is connected to the movable plate, an unlocking guide column is provided on the movable plate, and an unlocking guide hole is correspondingly provided on the fuselage. The unlocking guide column passes through the unlocking guide hole into the cavity, and the unlocking cross bar is arranged at the lower part of the unlocking guide column.

[0014] Furthermore, the fuselage includes a body and a guide trunk, a guide leg is provided on one side of the lower part of the body, the high-voltage line entry groove is located between the guide leg and the guide trunk, and the high-voltage line entry groove gradually widens from top to bottom; the body includes a casing and a cover plate, a plug-in plate is provided on the top of the guide trunk, a plug-in slot is correspondingly provided on one side of the casing, corresponding pin holes are provided on both sides of the plug-in slot and on the plug-in plate on the body, and the plug-in plate is connected to the plug-in slot through a pin.

[0015] Furthermore, the grounding wire connection position is located at the bottom of the guide leg, and a grounding wire guard plate is provided next to the grounding wire connection position.

[0016] The present invention further provides a method for introducing return current from a high-voltage line into the ground, the method using any of the above-mentioned lockable grounding clamp devices mounted on a drone, comprising:

[0017] Connecting the ground wire: Connect the ground wire to the lockable ground clamp device;

[0018] Ascending to the high-voltage line: The drone is connected to the drone mounting assembly on the lockable grounding wire clamp device, and the drone ascends and carries the lockable grounding wire clamp device to the upper side of the high-voltage line, and the high-voltage line is located under the high-voltage line entry groove at the lower part of the fuselage. The drone slowly descends with the lockable grounding wire clamp device, so that the high-voltage line passes through the high-voltage line entry groove and reaches the high-voltage line claw clasping area;

[0019] Clamping the high-voltage wire: As the drone carrying the lockable grounding wire clamp device continues to slowly descend, the lockable grounding wire clamp device presses on the high-voltage wire. Under the action of the lockable grounding wire clamp device's own gravity, the high-voltage wire pushes against the sliding body to move upward, driving the high-voltage wire claws to embrace and clamp the high-voltage wire. The drone then detaches from the lockable grounding wire clamp device and descends to the ground. During the upward movement of the sliding body, different parts of the locking portion on the sliding body lock with the locking tongue, thereby limiting the downward movement of the sliding body through the locking tongue.

[0020] High-voltage line grounding: electrically connect the lower end of the grounding line to the ground to guide the return current in the high-voltage line into the ground through the grounding wire;

[0021] Disengagement from the high-voltage line: After the high-voltage line maintenance is completed, the drone rises and is connected to the drone mounting assembly of the lockable grounding wire clamp device. The drone carries the lockable grounding wire clamp device and slowly rises. The drone mounting assembly moves upward relative to the fuselage and drives the lock tongue driving member to move upward, further causing the lock tongue driving member to drive the lock tongue to disengage from the locking portion. The sliding body descends, and the high-voltage line claw opens and disengages from the high-voltage line.

[0022] Descending to the ground: The drone is lowered to the ground with the lockable grounding clamp device.

[0023] Compared with the existing technology, the present invention has the following advantages: the drone-mounted lockable grounding clamp device can be carried by a drone to complete grounding operations for medium- and high-voltage power lines, which is time-saving and safer for on-site construction workers. The unique locking and unlocking mechanism, consisting of a lock core, a clamping claw assembly, a lock tongue driver, and a drone-mounted assembly, allows the clamp device to close the high-voltage line claws under the action of its own gravity once the high-voltage line enters the high-voltage line claw clasping area, thereby connecting and locking the high-voltage line. The locking method is relatively reliable and can only be unlocked by pulling up on the drone-mounted assembly, thus ensuring safe grounding in adverse weather conditions such as strong winds. When it is necessary to remove the clamp device, the clamp device can be unlocked by connecting the drone-mounted assembly and pulling it up, making it easier to remove the clamp device from the high-voltage line. The locking and unlocking methods of the clamp device are both achieved through a purely mechanical structure, making it durable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is explained in detail below based on the accompanying drawings. It should be noted that the accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, but they cannot create any limitation on the feasibility of the present invention.

[0025] In the attached figure:

[0026] Figure 1 Schematic diagram of the three-dimensional structure of an embodiment of a lockable grounding clamp device mounted on a drone according to the present invention.

[0027] Figure 2 This is a structural schematic diagram of an embodiment of a lockable grounding clamp device mounted on a drone with the cover opened.

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the lock core and the clamping claw assembly in one embodiment of the lockable grounding wire clamp device mounted on a drone of the present invention.

[0029] Figure 4This is an exploded view of the lock core of an embodiment of a lockable grounding clamp device mounted on a drone according to the present invention.

[0030] Figure 5 This is an exploded view of the clamping claw assembly of an embodiment of a lockable grounding clamp device mounted on a drone according to the present invention.

[0031] Figure 6 This is a schematic diagram of the three-dimensional structure of the lock core seat in one embodiment of the lockable grounding wire clamp device mounted by an unmanned aerial vehicle of the present invention.

[0032] Figure 7 This is a schematic diagram of the three-dimensional structure of the lock tongue and the lock tongue swing arm in one embodiment of the lockable grounding wire clamp device mounted by an unmanned aerial vehicle of the present invention.

[0033] Figure 8 This is a cross-sectional view of a lock tongue and a lock tongue swing arm in one embodiment of a lockable grounding wire clamp device mounted on a drone according to the present invention.

[0034] Figure 9 This is a schematic diagram of the connection between the lock core and clamping claw assembly and the drone mounting assembly in one embodiment of the lockable grounding wire clamp device mounted on a drone of the present invention.

[0035] Figure 10 This is an exploded view of the body of an embodiment of a lockable grounding clamp device mounted on a drone according to the present invention.

[0036] Figure 11 This is a schematic diagram of the three-dimensional structure of the guide trunk in one embodiment of the lockable grounding clamp device mounted on a drone of the present invention.

[0037] In the figure, the reference numerals indicate:

[0038] Body 10, cavity 11, unlocking guide hole 12, body 13, guide leg 131, grounding wire connection position 1311, grounding wire connection screw hole 1312, housing 132, plug slot 1321, cover 133, grounding wire guard plate 134, guide trunk 14, plug piece 141, latch 15;

[0039] The clamping claw assembly 20, the high-voltage wire claw 21, the claw seat 211, the first hinge position 212, the second hinge position 213, and the swing arm 22;

[0040] Lock cylinder 30, sliding body 31, locking portion 311, sliding guide hole 312, lock tongue 32, contact surface 321, lock cylinder seat 33, sliding groove 331, lock tongue hole 332, lock tongue swing arm hole 333, sliding guide post 34, return spring 35, lock tongue swing arm 36, lock tongue groove 361, inclined surface 362, inclined hole 363;

[0041] The high voltage line enters the slot 40;

[0042] Lock bolt drive 50;

[0043] UAV mounting assembly 60 , movable plate 61 , lifting ring 62 , unlocking guide post 63 , and limiting protrusion 631 . DETAILED DESCRIPTION

[0044] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0045] In addition, as shown in the present disclosure and claims, unless the context clearly indicates an exception, the words "a", "an", "an kind" and / or "the" do not specifically refer to the singular, but also include the plural. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present application.

[0046] In one embodiment, a lockable grounding clamp device mounted on a drone is provided. Figure 1 As shown, the lockable grounding clamp device mounted by the drone includes a fuselage 10 and a clamping claw assembly 20. The fuselage 10 is used to install other components and to guide the high-voltage line into the clamping claw assembly 20. The clamping claw assembly 20 is used to clamp the high-voltage line. Figure 2 As shown, a cavity 11 is provided in the fuselage 10, and the clamping claw assembly 20 is arranged in the cavity 11. A lock core 30 is also provided in the cavity 11. The lock core 30 is used to lock the state of the clamping claw assembly 20. Figure 3 and Figure 4 As shown, the lock core 30 includes a sliding body 31 that can move up and down, and the clamping claw assembly 20 includes a high-voltage wire claw 21 that can be driven to open and close by the sliding body 31. In this embodiment, two high-voltage wire claws 21 are provided on the left and right, and the sliding body 31 is a slider, which drives the two high-voltage wire claws 21 to open and close by moving the sliding body 31 up and down.

[0047] like Figure 1 As shown, a high-voltage line entry groove 40 is provided at the lower part of the fuselage 10. The high-voltage line entry groove 40 is a downward opening, and the upper end of the high-voltage line entry groove 40 extends into the cavity 11, so that when the lockable grounding wire clamp device is carried by a drone to the high-voltage line, the high-voltage line can enter the embracing area of ​​the high-voltage line claws 21 set in the cavity 11, and as the drone carrying the lockable grounding wire clamp device slowly descends, under the action of the self-gravity of the lockable grounding wire clamp device, the high-voltage line resists the sliding body 31 and moves upward to drive the high-voltage line claws 21 to embrace, and after the high-voltage line claws 21 embrace, electrical connection with the high-voltage line is achieved, and the grounding wire connected by the lockable grounding wire clamp device can guide the return current of the high-voltage line into the ground.

[0048] Combine Figure 3 and Figure 4 As shown, the lock core 30 also includes a lock tongue 32 for limiting the downward movement of the sliding body 31. A locking portion 311 corresponding to the lock tongue 32 is provided on the sliding body 31. When the sliding body 31 moves upward, the lock tongue 32 is always locked with the sliding body 31. The lock tongue 32 will not prevent the sliding body 31 from moving upward, but will prevent the sliding body 31 from moving downward to prevent the high-voltage line claw 21 from opening without unlocking.

[0049] Combine Figure 2 As shown, a lock tongue driving component 50 is provided in the cavity 11 for driving the lock tongue 32 to disengage from the locking portion 311. The lock tongue driving component 50 disengages from the locking portion 311 by driving the lock tongue 32 to move its position or adjust its posture. A drone mounting assembly 60 that can move freely up and down is provided on the fuselage 10. The drone mounting assembly 60 is used to connect with the drone, and the lock tongue driving component 50 is connected to the drone mounting assembly 60. When the drone rises, it can drive the drone mounting assembly 60 to move upward relative to the fuselage 10, thereby driving the lock tongue driving component 50 to move upward. The lock tongue driving component 50 then drives the lock tongue 32 to disengage from the locking portion 311 to unlock, so that the downward movement of the sliding body 31 is no longer restricted, that is, the high-voltage line claw 21 can be freely opened. The high-voltage line claw 21 can be opened under the action of gravity or driven by the high-voltage line, so that the high-voltage line can be disengaged. As shown Figure 1-2 As shown, a grounding wire connection position 1311 is provided at the bottom of the fuselage 10, and the various movable parts of the lockable grounding wire clamp device are electrically connected by wires (not shown in the figure). The various movable parts are made of conductive materials. The connection through wires makes the entire device have better conductivity, so that the high-voltage wire claw 21 can be electrically connected to the grounding wire connection position 1311. The grounding wire connection position 1311 is used to electrically connect the ground wire. The high-voltage wire claw 21 can be directly electrically connected to the grounding wire connection position 1311 through a wire, or the electrical connection can be achieved through mutual conductivity between the various conductive parts in the lockable grounding wire clamp device mounted by the drone.

[0050] Based on the above embodiments, it can be seen that the drone-mounted lockable grounding clamp device can be carried by a drone to complete grounding operations for medium- and high-voltage power lines, which is time-saving and safe for on-site construction personnel. The unique locking and unlocking mechanism, consisting of a lock cylinder 30, a clamping claw assembly 20, a lock tongue driver 50, and a drone-mounted assembly 60, allows the high-voltage line to enter the clasping area of ​​the high-voltage line claws 21. Under the action of gravity, the lockable grounding clamp device can close the high-voltage line claws 21, effectively connecting and locking the high-voltage line. The locking mechanism is relatively reliable and can only be unlocked by pulling up on the drone-mounted assembly 60, thus ensuring safe grounding in adverse weather conditions such as strong winds. When removal is required, the device can be unlocked by connecting the drone-mounted assembly 60 and pulling it up, making it easier to remove the lockable grounding clamp device from the high-voltage line. The locking and unlocking mechanisms of the lockable grounding clamp device are both achieved through a purely mechanical structure, making it durable and reliable.

[0051] Furthermore, in another embodiment, Figure 3 and Figure 5 As shown, the clamping claw assembly 20 in the lockable grounding wire clamp device mounted on a drone also includes a swinging arm 22 that is swingably disposed in a cavity. Each of the high-voltage wire claws 21 on the left and right sides is equipped with a corresponding swinging arm 22. The swinging arm 22 cooperates with the lock cylinder 30 to drive the high-voltage wire claw 21 to open and close. The high-voltage wire claw 21 includes an upper claw seat 211. The claw seat 211 has a first hinge position 212 and a second hinge position 213 on its upper and lower sides, respectively. The first hinge position 212 and the second hinge position 213 are both hinge holes. The first hinge position 212 is hinged to the lower end of the swing arm 22 (the hinge axis is not shown in the figure), and the second hinge position 213 is hinged to the lower end of the sliding body 31. When the sliding body 31 moves upward, the high-voltage wire claws 21 on both sides rotate inward relative to the swing arm 22 to close. When the sliding body 31 moves downward, the high-voltage wire claws 21 on both sides rotate outward relative to the swing arm 22 to open.

[0052] Furthermore, in another embodiment, Figure 3 、 Figure 4 and Figure 6As shown, the lock core 30 in the lockable grounding wire clamp device mounted by the drone also includes a lock core seat 33 fixedly set in the cavity 11. The lock core seat 33 is fixedly connected to the top of the cavity 11 of the fuselage 10 by screws. The lock core seat 33 is T-shaped with a wide top and a narrow bottom. The upper ends of the swing arms 22 on both sides are respectively hinged to the two sides of the top of the lock core seat 33. A sliding groove 331 matching the sliding body 31 is provided in the lock core seat 33. The sliding body 31 is set in the sliding groove 331. The sliding body 31 moves up and down along the sliding groove 331. Two sliding guide posts 34 are provided, and the sliding guide posts 34 are fixed at the top of the sliding groove 331. A sliding guide hole 312 is correspondingly provided in the sliding body 31. The sliding guide posts 34 are passed through the sliding guide holes 312, and a return spring 35 located on the upper side of the sliding body 31 is sleeved on the sliding guide posts 34. By setting the return spring 35, when the sliding body 31 moves upward, the return spring 35 is compressed, and when the lock tongue 32 disengages from the locking portion 311 on the sliding body 31, under the action of the return spring 35, the sliding body 31 can move downward more smoothly to achieve unlocking.

[0053] Furthermore, in another embodiment, Figure 3 、 Figure 4 and Figure 6 As shown, the lock core seat 33 in the lockable grounding wire clamp device mounted by the drone is provided with a lock tongue hole 332 located at the bottom of the side of the sliding groove 331. The lock tongue 32 is set in the lock tongue hole 332. The locking part 311 is a tooth row set on the side of the sliding body 31. The tooth row is provided on the front and rear sides of the sliding body 31, and the lock tongue 32 is provided on both sides to ensure the stability of the locking. Figure 7 As shown, the front end of the lock tongue 32 is a thinner portion that matches between two upper and lower adjacent teeth of the tooth row, so that the lock tongue can be smoothly locked between two upper and lower adjacent teeth of the tooth row.

[0054] Furthermore, in another embodiment, Figure 3 、 Figure 4 and Figure 6-8 As shown, the lock core 30 in the lockable grounding wire clamp device mounted by the drone also includes a lock tongue swing arm 36, which is used to drive the lock tongue 32 to lock or unlock with the sliding body 31. The lock core seat 33 is provided with a lock tongue swing arm hole 333 located on the upper side of the lock tongue hole 332. The lock tongue hole 332 is connected to the lock tongue swing arm hole 333 from top to bottom. The lock tongue swing arm 36 is hinged in the lock tongue swing arm hole 333. The bottom of the lock tongue swing arm 36 is provided with a lock tongue groove 361. The middle part of the lock tongue 32 is correspondingly provided with a hinged part. The lock tongue 32 is hinged in the lock tongue groove 361. Figure 8As shown, the top surface of the lock tongue groove 361 is a slope 362 that gradually decreases from front to back. By setting the slope 362, when the sliding body 31 moves upward, the lower side surface of the front end of the lock tongue 32 contacts the top surface of the teeth of the locking portion 311, and the front end of the lock tongue 32 can rotate upward smoothly, so that the lock tongue 32 will not prevent the sliding body 31 from moving upward. When the sliding body 31 moves downward, the top surface of the rear part of the lock tongue 32 will hit the rear edge of the slope 362, so that the front end of the lock tongue 32 cannot rotate downward smoothly, thereby preventing the sliding body 31 from moving downward and preventing the high-voltage line claw 21 from opening.

[0055] Combine Figure 7 As shown, the front bottom surface of the lock tongue 32 is an inclined contact surface 321, and the top surface of each tooth of the tooth row is a corresponding inclined surface. This makes it easier to push the front end of the lock tongue 32 to rotate upward when the contact surface 321 on the lower side of the front end of the lock tongue 32 contacts the top surface of the teeth of the locking portion 311 during the upward movement of the sliding body 31. The top surface of the front end of the lock tongue 32 is flat, and the bottom surface of the teeth is also flat, so that the top surface of the lock tongue 32 can better clamp the bottom surface of the teeth.

[0056] Furthermore, in another embodiment, Figure 7 and Figure 8 As shown, the upper portion of the lock tongue swing arm 36 in the lockable grounding wire clamp device mounted by the drone is provided with an inclined hole 363, combined with Figure 9 As shown, the lock tongue drive member 50 is an unlocking cross bar passed through the inclined hole 363. Due to the provision of the inclined hole 363, when the unlocking cross bar moves upward, it can drive the lower end of the lock tongue swing arm 36 to swing outward, thereby driving the lock tongue 32 to swing outward and disengage from the tooth row on the side of the sliding body 31 to achieve unlocking.

[0057] Furthermore, in another embodiment, Figure 1-2 and Figure 9 As shown, the drone mounting assembly 60 in the lockable grounding clamp device mounted on the drone includes a movable plate 61, which can move up and down relative to the fuselage 10. The movable plate 61 is connected to a lifting ring 62, which is used to be connected to the drone. The four corners of the movable plate 61 are respectively provided with unlocking guide posts 63, and the lower part of the unlocking guide post 63 is provided with a limiting protrusion 631 for limiting the upward and downward movement distance of the unlocking guide post 63. The top of the unlocking guide post 63 is fixed on the movable plate 61, combined with the Figure 10 As shown, an unlocking guide hole 12 is correspondingly provided on the fuselage 10 , and the unlocking guide column 63 penetrates into the cavity 11 through the unlocking guide hole 12 , and the unlocking cross bar (lock tongue driving member 50 ) is provided at the lower part of the two unlocking guide columns 63 .

[0058] Furthermore, in another embodiment, Figure 1As shown, the fuselage 10 of the lockable grounding clamp device mounted on a drone includes a body 13 and a guide trunk 14. A guide leg 131 is provided on the left side of the lower portion of the body 13. The high-voltage line entry slot 40 is located between the guide leg 131 and the guide trunk 14. The high-voltage line entry slot 40 gradually widens from top to bottom. Figure 10 As shown, the body 13 includes a housing 132 and a cover 133, and the cover 133 is connected to one side of the housing 132. Figure 11 As shown, the top of the guide trunk 14 is provided with a plug-in piece 141, as shown in FIG. Figure 10 As shown, a corresponding plug-in slot 1321 is provided on the right side of the housing 132, and corresponding pin holes are provided on both sides of the plug-in slot 1321 on the housing 132 of the body 13 and on the plug-in piece 141. The plug-in piece 141 is connected to the plug-in slot 1321 through the pin 15 to achieve quick disassembly and assembly.

[0059] Furthermore, in another embodiment, Figure 1-2 As shown, the grounding wire connection position 1311 in the lockable grounding wire clamp device mounted by the drone is located at the bottom of the guide leg 131, combined with Figure 10 As shown, a grounding wire connection screw hole 1312 is provided inside the grounding wire connection position 1311 for connecting the grounding wire, and a grounding wire guard plate 134 is provided next to the grounding wire connection position 1311 , and the grounding wire guard plate 134 is hinged on the guide leg 131 .

[0060] In the foregoing embodiments, the components to be connected are connected by bolts.

[0061] In one embodiment, a method for grounding a return current in a high-voltage line is provided. The method uses the lockable grounding clamp device mounted on a drone in the previous embodiment, and includes the following steps:

[0062] (1) Connecting the ground wire: Connect the ground wire to the lockable ground wire clamp device.

[0063] (2) Ascending to the high-voltage line: The drone is connected to the drone mounting assembly on the lockable grounding wire clamp device. The drone ascends and carries the lockable grounding wire clamp device to the upper side of the high-voltage line, and places the high-voltage line at the lower side of the high-voltage line entry slot at the lower part of the fuselage. The drone slowly descends with the lockable grounding wire clamp device, so that the high-voltage line enters the slot and reaches the high-voltage line claw clasping area.

[0064] (3) Clamping the high-voltage line: As the UAV carrying the lockable grounding wire clamp device continues to slowly descend, the lockable grounding wire clamp device presses on the high-voltage line. Under the action of the self-gravity of the lockable grounding wire clamp device, the high-voltage line resists the upward movement of the sliding body and drives the high-voltage line claws to embrace and clamp the high-voltage line. Then the UAV detaches from the lockable grounding wire clamp device and descends to the ground. During the upward movement of the sliding body, different parts of the locking part on the sliding body are locked with the lock tongue to limit the downward movement of the sliding body through the lock tongue.

[0065] It should be noted that due to the different thicknesses of different high-voltage wires, the degree of engagement of the high-voltage wire claws 21 is different for high-voltage wires of different thicknesses, and the upward movement distance of the sliding body 31 is also different. However, when the sliding body 31 moves upward, the locking tongue 32 is always locked with the sliding body 31.

[0066] Only when the lock tongue drive member 50 rises to the uppermost end of the inclined hole 363, or close to the uppermost end, the locking portion 311 and the lock tongue 32 will be unlocked. The rest of the states are locked states, but the degree of locking is different. This is also to adapt to the embracing action of high-voltage wires of different thicknesses.

[0067] (4) Grounding of high-voltage wires: The lower end of the grounding wire is electrically connected to the ground to introduce the return current in the high-voltage wire into the ground through the grounding wire.

[0068] (5) Disengagement from the high-voltage line: After the high-voltage line is inspected and repaired, the drone rises and is connected to the drone mounting assembly of the lockable grounding wire clamp device. The drone carries the lockable grounding wire clamp device and slowly rises. The drone mounting assembly moves upward relative to the fuselage and drives the lock tongue drive member to move upward, further causing the lock tongue drive member to drive the lock tongue to disengage from the locking portion, the sliding body descends, the high-voltage line claw opens and disengages from the high-voltage line.

[0069] (6) Descending to the ground: The UAV carrying the lockable grounding clamp device descends to the ground.

[0070] In this method for introducing return current from a high-voltage line to the ground, a lockable grounding clamp device is mounted on a drone, which not only solves the problem of the grounding clamp being unable to be mechanically locked when mounted on the drone, but also solves the problem of difficulty in unhooking after mounting. Specifically, when the drone carrying the grounding clamp device crosses over the high-voltage line, the clamp device's own gravity presses down, causing the sliding body to rise, and the tooth row attached to the sliding body also rises. At this time, the lock tongue will be inserted into the tooth row, so that the sliding body can only move upward, thereby locking the lock core, so that the high-voltage line claw will not loosen after holding the high-voltage line. When the high-voltage line maintenance operation process is completed and the grounding clamp needs to be removed, the drone pulls up the lifting ring, which drives the lock tongue drive member to unlock the lock tongue and withdraw it from the tooth row. At this time, due to the elastic force of the spring above the sliding body, the elastic force pushes the sliding body downward, and the high-voltage line claw opens to both sides, completing the unlocking.

[0071] This design cleverly locks the high-voltage wire claw by relying on the grounding wire clamp's own gravity to compress the spring above the slider, allowing the slider to slide upward. The locking tongue presses against the teeth, locking the slider in one direction. This provides excellent locking stability. To unlock, the upward pull of the drone causes the lifting ring to move slightly upward relative to the fuselage, completing the unlocking action by moving the locking tongue backward. The spring then springs open the slider, pushing the high-voltage wire claw to the sides. This clever unlocking design also achieves a perfect unlocking operation for the high-voltage wire claw.

[0072] It should be noted that, unless otherwise defined, all terms used in this document have the same meaning as commonly understood by those skilled in the art to which the present disclosure belongs, and those terms defined in common dictionaries herein should be interpreted as having meanings consistent with their meanings in the context of the relevant technology. It should also be understood that the above is an illustration of the present disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of the present disclosure have been described, it will be readily understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and therefore, all such modifications are intended to be included within the scope of the present disclosure as defined in the claims and will not be described in detail herein.

Claims

1. A lockable grounding clamp device mounted on an unmanned aerial vehicle, comprising a body and a clamping claw assembly, characterized in that: The fuselage is provided with a cavity, the clamping claw assembly is arranged in the cavity, and the cavity is also provided with a lock core, the lock core includes a sliding body that can be moved up and down, and the clamping claw assembly includes a high-voltage wire claw that can be driven to open and close by the sliding body; the lower part of the fuselage is provided with a high-voltage wire entry groove, and the high-voltage wire entry groove extends into the cavity, so that the high-voltage wire can enter the embracing area of ​​the high-voltage wire claw, and under the action of gravity of the lockable grounding wire clamp device, the high-voltage wire resists the sliding body and moves upward to drive the high-voltage wire claw to embrace; the lock core also includes a lock tongue for limiting the downward movement of the sliding body, and the sliding body is provided with a locking part corresponding to the lock tongue; a lock tongue driving part is provided in the cavity for driving the lock tongue to disengage the lock tongue from the locking part, and a drone mounting assembly that can move freely up and down is provided on the fuselage, and the lock tongue driving part is connected to the drone mounting assembly; The clamping claw assembly further includes a swing arm swingably disposed in the cavity, the high-voltage line claw includes a claw seat portion, and the claw seat portion is respectively provided with a first hinge position and a second hinge position on the upper and lower sides thereof, the first hinge position being hinged to the lower end of the swing arm, and the second hinge position being hinged to the lower end of the sliding body; The lock core also includes a lock core seat fixedly arranged in the cavity, the upper end of the swing arm is hinged on the lock core seat, a sliding groove is provided in the lock core seat, the sliding body is arranged in the sliding groove, a sliding guide column is provided in the sliding groove, a sliding guide hole is correspondingly provided in the sliding body, and a reset spring located on the upper side of the sliding body is sleeved on the sliding guide column.

2. The lockable grounding clamp device mounted on a drone according to claim 1, characterized in that: The lock core seat is provided with a lock tongue hole located on the side of the sliding groove, the lock tongue is arranged in the lock tongue hole, and the locking part is a tooth row arranged on the side of the sliding body.

3. The lockable grounding clamp device mounted on a drone according to claim 2, characterized in that: The lock core also includes a lock tongue swing arm, a lock tongue swing arm hole located on the upper side of the lock tongue hole is provided in the lock core seat, the lock tongue swing arm is hinged in the lock tongue swing arm hole, a lock tongue groove is provided at the bottom of the lock tongue swing arm, the top surface of the lock tongue groove is an inclined surface that gradually decreases from front to back, the lock tongue is hinged in the lock tongue groove, and the lock tongue driving member is used to drive the lock tongue swing arm to swing.

4. The lockable grounding clamp device mounted on a drone according to claim 3, characterized in that: An inclined hole is provided on the upper portion of the lock tongue swing arm, and the lock tongue driving member is an unlocking cross bar passing through the inclined hole.

5. The lockable grounding clamp device mounted on a drone according to claim 4, characterized in that: The drone mounting assembly includes a movable plate, a lifting ring is connected to the movable plate, an unlocking guide column is provided on the movable plate, an unlocking guide hole is correspondingly provided on the fuselage, the unlocking guide column is inserted into the cavity through the unlocking guide hole, and the unlocking cross bar is arranged at the lower part of the unlocking guide column.

6. The lockable grounding clamp device mounted on a drone according to claim 1, characterized in that: The fuselage includes a body and a guide trunk, a guide leg is provided on one side of the lower part of the body, the high-voltage line entry groove is located between the guide leg and the guide trunk, and the high-voltage line entry groove gradually widens from top to bottom; the body includes a casing and a cover plate, a plug-in piece is provided on the top of the guide trunk, a plug-in slot is correspondingly provided on one side of the casing, corresponding pin holes are provided on both sides of the plug-in slot and on the plug-in piece on the body, and the plug-in piece is connected to the plug-in slot through a pin.

7. The lockable grounding clamp device mounted on a drone according to claim 6, characterized in that: A grounding wire connection position is provided at the bottom of the guide leg, and a grounding wire guard plate is provided next to the grounding wire connection position; and the movable parts of the lockable grounding wire clamp device are electrically connected through wires.

8. A method for introducing return current from a high-voltage line into the ground, characterized in that: The method uses the lockable grounding clamp device mounted on a drone as described in any one of claims 1 to 7, comprising: Connecting the ground wire: Connect the ground wire to the lockable ground clamp device; Ascending to the high-voltage line: The drone is connected to the drone mounting assembly on the lockable grounding wire clamp device. The drone ascends and carries the lockable grounding wire clamp device to the upper side of the high-voltage line, and places the high-voltage line under the high-voltage line entry slot at the lower part of the fuselage. The drone slowly descends with the lockable grounding wire clamp device, so that the high-voltage line passes through the high-voltage line entry slot and reaches the embracing area of ​​the high-voltage line claws; Clamping the high-voltage wire: As the drone carrying the lockable grounding wire clamp device continues to slowly descend, the lockable grounding wire clamp device presses on the high-voltage wire. Under the action of the lockable grounding wire clamp device's own gravity, the high-voltage wire pushes against the sliding body to move upward, driving the high-voltage wire claws to embrace and clamp the high-voltage wire. The drone then detaches from the lockable grounding wire clamp device and descends to the ground. During the upward movement of the sliding body, different parts of the locking portion on the sliding body lock with the locking tongue, thereby limiting the downward movement of the sliding body through the locking tongue. High-voltage line grounding: electrically connect the lower end of the grounding line to the ground to guide the return current in the high-voltage line into the ground through the grounding wire; Disengagement from the high-voltage line: After the high-voltage line maintenance is completed, the drone rises and is connected to the drone mounting assembly of the lockable grounding wire clamp device. The drone carries the lockable grounding wire clamp device and slowly rises. The drone mounting assembly moves upward relative to the fuselage and drives the lock tongue driving member to move upward, further causing the lock tongue driving member to drive the lock tongue to disengage from the locking portion. The sliding body descends, and the high-voltage line claw opens and disengages from the high-voltage line. Descending to the ground: The drone is lowered to the ground with the lockable grounding clamp device.

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