Unmanned aerial vehicle ground wire hanging and dismounting device

Abstract

The utility model relates to the technical field of power equipment, in particular to an unmanned aerial vehicle ground wire hanging and dismounting device. The device comprises a grounding wire clamp which is fixed on an unmanned aerial vehicle through a connecting frame, two connecting clamps are fixed at the lower part of the connecting frame, a first V-shaped guide fork with a downward opening is arranged at the lower part of each connecting clamp, and a positioning groove is arranged at the node of the upper part of each first V-shaped guide fork; the upper part of the grounding wire clamp is provided with a second V-shaped guide fork with an upward opening, the upper node of the second V-shaped guide fork is provided with a positioning plate which is in plugging cooperation with the positioning groove, and the connection clamp is provided with an electric locking mechanism which is used for locking and unlocking the positioning plate. Two grounding wire clamps can be suspended at the same time, the operation difficulty of the connecting process of the unmanned aerial vehicle and the grounding wire clamps is low, and the connection of the unmanned aerial vehicle and the grounding wire clamps is stable.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically a grounding wire attachment and removal device for unmanned aerial vehicles (UAVs). Background Technology

[0002] When power supply systems and electrical equipment are shut down for maintenance, temporary grounding is required to prevent electric shock accidents to workers caused by sudden power restoration to the power lines or equipment.

[0003] With the improvement of drone operation technology, the method of using drones to hoist grounding wire clamps has been gradually applied. The device is hoisted to the angle steel or cable by suspending the lifting ring on the grounding wire clamp via a hook on the drone, and then automatically clamped and fixed to the angle steel or cable using the clamping structure on the grounding wire clamp. This type of grounding wire hanging and removing device is described in both Chinese Patent Publication No. CN112768972B and Chinese Patent Publication No. CN119050892B, both titled "A Drone Power Grounding Wire Hanging and Removing Device".

[0004] In practice, two grounding clamps connected by wires are often clamped onto the angle steel and the cable respectively. For example, the grounding clamp hanging and removing device described in the cited patent involves a drone hoisting one grounding clamp onto the angle steel, and then the drone landing to hoist the other grounding clamp onto the cable. Clearly, this back-and-forth drone lifting and lowering method is inefficient. While it's possible to suspend the two grounding clamps separately using two hooks on the drone, this method, although inexpensive, requires a high level of skill from the drone operator to precisely hook the clamps onto the hooks and rings. Especially during the removal of the second grounding clamp, the drone's weight is increased due to the existing clamp, and the hooking method makes this added weight susceptible to wind and significant swaying, further increasing the difficulty of drone operation. Furthermore, the installation and removal of the grounding clamp and angle steel or cable can cause the drone to shake due to collisions. The suspension method of the hook and ring obviously has insufficient stability. Clearly, whether the grounding clamp shakes due to wind or drone collisions, there is a risk that the grounding clamp may fall off, which urgently needs to be addressed. Utility Model Content

[0005] In order to avoid and overcome the technical problems existing in the prior art, this utility model provides a drone grounding wire hanging and detaching device that can suspend two grounding wire clamps at the same time. The connection process between the drone and the grounding wire clamp is easy to operate and the connection between the drone and the grounding wire clamp is stable.

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

[0007] A grounding wire attachment / removal device for a drone includes a grounding wire clamp fixed to the drone via a connecting frame. Two connecting clamps are fixed to the lower part of the connecting frame. Each connecting clamp has a first V-shaped guide fork with its opening facing downwards, and a positioning groove is provided at the upper node of the first V-shaped guide fork. The grounding wire clamp has a second V-shaped guide fork with its opening facing upwards, and a positioning plate that engages with the positioning groove is provided at the upper node of the second V-shaped guide fork. An electric locking mechanism for locking and unlocking the positioning plate is provided on the connecting clamps.

[0008] As a further embodiment of this utility model: the electric locking mechanism includes a locking pin driven by an electric drive unit and sliding back and forth along its own axis. The axis of the locking pin is perpendicular to the length direction of the positioning groove. When the locking pin slides, it has a locking state in which it is inserted into the inner cavity of the positioning groove to lock the positioning plate and an unlocking state in which it is separated from the positioning groove to unlock the positioning plate.

[0009] As a further embodiment of this utility model: the electric drive unit includes a drive motor with a vertically arranged output shaft, a rocker arm is radially mounted on the output shaft of the drive motor, and a vertically arranged drive column is fixed to the cantilever end of the rocker arm; a drive plate is fixed on the locking pin, and the drive plate is provided with a drive elongated hole with a hole pattern that is horizontal in the length direction and radially arranged along the locking pin. The drive column is inserted into the drive elongated hole so that when the rocker arm drives the drive column to rotate, the drive locking pin generates a radial reciprocating motion.

[0010] As a further embodiment of this utility model: the swing arm and the output shaft of the drive motor have a transmission keyway and a connecting key that can form a keyway fit. The swing arm is slidably mounted on the output shaft of the drive motor. The swing arm can be driven to slide by the unlocking mechanism, so that the transmission keyway and the connecting key are separated from each other, so as to form a free state in which the swing arm can swing freely; it also includes an unlocking spring that can elastically drive the locking pin to slide toward the unlocked state.

[0011] As a further improvement of this utility model, the electric locking mechanism also includes a return spring that elastically prevents the transmission keyway from separating from the connecting key.

[0012] As a further improvement of this utility model: the unlocking mechanism includes a pull ring, which is connected to a swing rod via a pull rope, so that when the pull ring is pulled outward, it drives the swing rod to slide to the free state.

[0013] As a further improvement of this utility model, the positioning plate is provided with a locking hole that engages with the locking pin.

[0014] As a further embodiment of this utility model: the connecting frame includes a vertically arranged fixed rod and a rocker arm hinged to the lower end of the fixed rod. The bottom of the rocker arm is fixed to the middle of the crossbar. The housings of the two connecting clamps are respectively fixed to the two ends of the crossbar. The hinge axis of the rocker arm and the fixed rod is horizontal and perpendicular to the axis of the crossbar.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The arrangement of the two connecting clamps in this application not only allows for the simultaneous suspension of two grounding clamps, thus enabling continuous hanging and unhanging operations of the two grounding clamps; furthermore, the connecting clamps connected to the UAV and the grounding clamps, guided by the first V-shaped guide fork and the second V-shaped guide fork, make the connection process between the connecting clamps and the grounding clamps easy to operate. Subsequently, the stable insertion and engagement between the positioning plate and the positioning slot, as well as the electric locking mechanism for the electric locking of the positioning plate, ensure the stable connection between the UAV and the grounding clamps and effectively prevent the grounding clamps from falling off.

[0017] 2. The swing arm converts rotational motion into linear motion of the locking pin. During the locking and unlocking process, compared with drive methods such as electric telescopic rods or lead screw slider structures, the drive motor has a smaller rotational stroke and faster response. After the UAV hoists the grounding clamp into place, it can quickly unlock the grounding clamp and the connecting clamp.

[0018] 3. This application has an emergency unlocking function in case the electric drive unit is stuck and cannot be unlocked. In case of emergency unlocking, the rocker arm can be slid to a free state by using the unlocking mechanism. In this state, there is no transmission relationship between the rocker arm and the electric drive unit. The locking pin can be automatically unlocked under the drive of the unlocking spring, thus realizing emergency unlocking when the electric locking mechanism cannot be automatically unlocked.

[0019] 4. A return spring is provided to maintain the transmission relationship between the elastic compression rocker arm and the output shaft of the drive motor. At the same time, the compression force applied by the return spring also assists the rocker arm in resetting to reconnect with the output shaft of the drive motor when the rocker arm is in a free state, which facilitates the rocker arm reset in subsequent operations.

[0020] 5. The unlocking mechanism adopts a design of pull ring and pull rope, which allows for a high degree of freedom in the direction of force applied by the pull ring to pull the pull rope. This facilitates manual operation at height or on the ground by hooking the pull ring with an insulating rod to achieve emergency unlocking.

[0021] 6. The hinged connection between the fixed rod and the rocker arm in the connecting frame allows the rocker arm to swing and buffer the impact force when the grounding clamp collides with the angle steel or wire, effectively preventing collision damage caused by rigid collisions. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the connection structure of the connecting clamp and the grounding clamp in this utility model.

[0023] Figure 2 This is a schematic diagram of the grounding clamp in this utility model.

[0024] Figure 3 This is a structural schematic diagram of the unlocked state of the connecting clamp in this utility model.

[0025] Figure 4 This is a structural schematic diagram of the locking state of the connecting clamp in this utility model.

[0026] Figure 5 This is a schematic diagram of the first internal structure of the connecting clamp in this utility model.

[0027] Figure 6 This is a schematic diagram of the second internal structure of the connecting clamp in this utility model.

[0028] Figure 7 This is a schematic diagram of the structure of this utility model.

[0029] In the diagram: 10. Connecting frame; 11. Fixing rod; 12. Rocker arm; 13. Crossbar; 20. Connecting clamp; 21. First V-shaped guide fork; 22. Locking pin; 221. Drive plate; 2211. Drive elongated hole; 222. Unlocking spring; 23. Electric locking mechanism; 231. Drive motor; 2311. Connecting key; 2312. Return spring; 232. Swing arm; 2321. Transmission keyway; 233. Drive column; 24. Unlocking mechanism; 241. Pull ring; 242. Pull rope; 25. Positioning groove; 30. Grounding clamp; 31. Second V-shaped guide fork; 32. Positioning plate; 321. Locking hole. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] For ease of understanding, the specific structure and working method of this utility model are further described below with reference to the accompanying drawings:

[0032] The specific structure of this utility model is as follows: Figure 1-7As shown, its main structure includes a grounding clamp 30 fixed to the UAV via a connecting frame 10. Two connecting clamps 20 are fixed to the lower part of the connecting frame 10, enabling the two grounding clamps 30 to be fixed to the connecting frame 10 and facilitating continuous connection between the two grounding clamps 30 and the angle steel and cable. Specifically, the lower part of the connecting clamp 20 has a downward-opening first V-shaped guide fork 21, with a positioning groove 25 at its upper node; the upper part of the grounding clamp 30 has an upward-opening second V-shaped guide fork 31, with a positioning plate 32 at its upper node that engages with the positioning groove 25; the connecting clamp 20 is equipped with an electric locking mechanism 23 for locking and unlocking the positioning plate 32. In use, as... Figure 1 As shown, by staggering the first V-shaped guide fork 21 and the second V-shaped guide fork 31, guiding operations in the X and Y axes can be achieved. This ensures that during the connection process between the connecting clamp 20 and the grounding clamp 30 using the UAV, the positioning plate 32 and the positioning groove 25 form a stable insertion fit. Subsequently, the positioning plate 32 is electrically locked using the electric locking mechanism 23. The arrangement of this structure not only allows for the simultaneous suspension of two grounding clamps 30 by the two connecting clamps 20, thus enabling continuous hanging and unhanging operations of the two grounding clamps 30; furthermore, the connection between the connecting clamp 20 and the grounding clamp 30 connected to the UAV, guided by the first V-shaped guide fork 21 and the second V-shaped guide fork 31, makes the connection process between the connecting clamp 20 and the grounding clamp 30 easy. Subsequently, the stable insertion fit between the positioning plate 32 and the positioning groove 25, and the electric locking mechanism 23, ensure the stable connection between the UAV and the grounding clamp 30, effectively preventing the grounding clamp 30 from falling off. The locking mechanism 23 can be remotely controlled. During the hoisting of the grounding clamp 30, the electric locking mechanism 23 is used to electrically lock the positioning plate 32. After the grounding clamp 30 is in place on the angle steel or cable, the electric locking mechanism 23 is used to electrically unlock the positioning plate 32, so that the grounding clamp 30 is separated from the connecting clamp 20, thus completing the installation of the grounding clamp 30. This has the advantage of convenient operation.

[0033] like Figure 1 , Figure 3 and Figure 4 As shown, the electric locking mechanism 23 includes a locking pin 22 driven by an electric drive unit and sliding reciprocally along its own axis. The axis of the locking pin 22 is perpendicular to the length direction of the positioning groove 25. Figure 4 As shown, when the locking pin 22 slides, it has a locked state where it is inserted into the inner cavity of the positioning groove 25 to lock the positioning plate 32, as shown. Figure 3As shown, when the locking pin 22 slides, it also has an unlocked state where it separates from the positioning groove 25 to unlock the positioning plate 32. By using a method where the axis of the locking pin 22 slides perpendicular to the length of the positioning groove 25 for locking and unlocking, loosening or displacement caused by lateral forces is avoided. In addition, the sliding stroke of the locking pin 22 is short, and the locking and unlocking actions are rapid, which has the advantages of stable and efficient locking.

[0034] Specifically, such as Figure 5 and Figure 6 As shown, the electric drive unit includes a drive motor 231 with its output shaft arranged vertically. A rocker arm 232 is radially mounted on the output shaft of the drive motor 231, and a vertically arranged drive column 233 is fixed to the cantilever end of the rocker arm 232. A drive plate 221 is fixed on the locking pin 22, and the drive plate 221 has a drive elongated hole 2211 that is horizontal in the length direction of the hole and radially arranged along the locking pin 22. The drive column 233 is inserted into the drive elongated hole 2211. In use, the drive motor 231 drives the rocker arm 232 to swing. When the rocker arm 232 swings, it drives the drive column 233 at the cantilever end to rotate synchronously, so that the drive column 233 abuts against the hole wall of the drive elongated hole 2211. This causes the drive column 233 to slide along the length direction of the drive elongated hole 2211, while simultaneously driving the locking pin 22 to produce a radial reciprocating motion. The swing arm 232 converts the rotational motion into the linear motion of the locking pin 22. During the locking and unlocking process of the locking pin 22, compared with the driving methods such as electric telescopic rods or lead screw slider structures, the rotational stroke of the drive motor 231 is small and the response is fast. After the UAV hoists the grounding clamp 30 into place, it can quickly achieve the unlocking between the grounding clamp 30 and the connecting clamp 20.

[0035] Furthermore, such as Figure 6 As shown, the rocker arm 232 and the output shaft of the drive motor 231 have a transmission keyway 2321 and a connecting key 2311 that can form a keyway fit. The rocker arm 232 is slidably mounted on the output shaft of the drive motor 231. The rocker arm 232 can be driven to slide by the unlocking mechanism 24, so that the transmission keyway 2321 and the connecting key 2311 are separated from each other, forming a free state in which the rocker arm 232 can swing freely. It also includes an unlocking spring 222 that can elastically drive the locking pin 22 to slide toward the unlocked state. In the sliding fit between the rocker arm 232 and the output shaft of the drive motor 231, when the drive motor 231 is stuck and cannot be unlocked, the rocker arm 232 can be slid to the free state by the unlocking mechanism 24. In this state, the transmission keyway 2321 and the connecting key 2311 are separated from each other, so that there is no transmission relationship between the drive motor 231 and the rocker arm 232. Then the locking pin 22 can be automatically unlocked under the drive of the unlocking spring 222, realizing emergency unlocking when the electric locking mechanism 23 cannot be automatically unlocked.

[0036] In this structural arrangement, whether in the free state or in the transmission state where power is transmitted to the output shaft of the drive motor 231, the rocker arm 232 and the output shaft of the drive motor 231 remain in a sleeved relationship; only the transmission keyway 2321 and the connecting key 2311 are separated. Compared to electric telescopic rods or lead screw slider structures as the driving method of the electric drive unit, the connection structure between the locking pin 22 and the power end of the electric drive unit often needs to be separated to release the power transmission. In the method of this application where the drive motor 231 and the rocker arm 232 cooperate to drive the locking pin 22 to slide, the process of the rocker arm 232 returning to the transmission state from the free state is more convenient.

[0037] Based on the above, such as Figure 6 As shown, the electric locking mechanism 23 also includes a return spring 2312 that elastically prevents the transmission keyway 2321 from separating from the connecting key 2311. Specifically, the return spring 2312 can be sleeved on the drive motor 231 or the drive column 233, and it only needs to apply an elastic compressive force to the rocker arm 232 to maintain the transmission state. It is worth mentioning that the compressive force applied by the return spring 2312 to maintain the transmission state is also the reset force that makes the rocker arm 232 return to the transmission state when the rocker arm 232 is in the free state, which facilitates the subsequent operation of resetting the rocker arm 232. Of course, in actual implementation, when the combined force of the sliding friction of the rocker arm 232 and gravity is sufficient to maintain the transmission state, the return spring 2312 may not be necessary.

[0038] In addition, such as Figure 5 and Figure 6 As shown, the unlocking mechanism 24 includes a pull ring 241, which is connected to a swing arm 232 via a pull rope 242. When the pull ring 241 is pulled outward, it drives the swing arm 232 to slide to a free state. The design of the pull ring 241 and the pull rope 242 allows for a high degree of freedom in the direction of force applied by the pull ring 241 to pull the rope 242, facilitating manual unlocking at heights or by using an insulated rod hook on the ground. In practical implementation, the unlocking mechanism 24 can also be a conventional electric telescopic rod or cam structure, as long as it can drive the swing arm 232 to generate a sliding force along the output shaft of the drive motor 231.

[0039] Based on the above, such as Figure 1 and Figure 2 As shown, the positioning plate 32 has a locking hole 321 that engages with the locking pin 22. Compared with the locking method where the locking pin 22 abuts against the positioning plate 32, the engagement and locking of the locking pin 22 and the locking hole 321 is more stable.

[0040] Based on the above, such as Figure 7As shown, the connecting frame 10 includes a vertically arranged fixed rod 11 and a rocker arm 12 hinged to the lower end of the fixed rod 11. The bottom of the rocker arm 12 is fixed to the middle of the crossbar 13. The housings of the two connecting clamps 20 are respectively fixed to both ends of the crossbar 13. The hinge axis of the rocker arm 12 and the fixed rod 11 is horizontal and perpendicular to the axis of the crossbar 13. This hinged connection between the fixed rod 11 and the rocker arm 12 allows the rocker arm 12 to buffer the impact force when the grounding clamp 30 collides with the angle steel or the wire, effectively preventing collision damage caused by rigid collisions.

[0041] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0043] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A grounding wire attachment / removal device for unmanned aerial vehicles (UAVs), comprising a grounding wire clamp (30) fixed to the UAV via a connecting frame (10), characterized in that, The lower part of the connecting frame (10) is fixed with two connecting clamps (20). The lower part of the connecting clamp (20) has a first V-shaped guide fork (21) with an opening facing downward. A positioning groove (25) is provided at the upper node of the first V-shaped guide fork (21). The upper part of the grounding clamp (30) has a second V-shaped guide fork (31) with an opening facing upward. A positioning plate (32) that is inserted and cooperates with the positioning groove (25) is provided at the upper node of the second V-shaped guide fork (31). An electric locking mechanism (23) for locking and unlocking the positioning plate (32) is provided on the connecting clamp (20).

2. The UAV grounding wire attachment / removal device according to claim 1, characterized in that, The electric locking mechanism (23) includes a locking pin (22) driven by an electric drive unit and sliding back and forth along its own axis. The axis of the locking pin (22) is perpendicular to the groove length direction of the positioning groove (25). When the locking pin (22) slides, it has a locked state in which it is inserted into the inner cavity of the positioning groove (25) to lock the positioning plate (32) and an unlocked state in which it is separated from the positioning groove (25) to unlock the positioning plate (32).

3. The UAV grounding wire attachment / removal device according to claim 2, characterized in that, The electric drive unit includes a drive motor (231) with its output shaft arranged vertically. A rocker arm (232) is radially mounted on the output shaft of the drive motor (231). A drive column (233) is fixed to the cantilever end of the rocker arm (232). A drive plate (221) is fixed on the locking pin (22). The drive plate (221) is provided with a drive elongated hole (2211) that is horizontal in the length direction of the hole and radially arranged along the locking pin (22). The drive column (233) is inserted into the drive elongated hole (2211) so that when the rocker arm (232) drives the drive column (233) to rotate, the locking pin (22) will generate a radial reciprocating motion.

4. The UAV grounding wire attachment / removal device according to claim 3, characterized in that, The swing arm (232) and the output shaft of the drive motor (231) have a transmission keyway (2321) and a connecting key (2311) that can form a keyway fit. The swing arm (232) is slidably mounted on the output shaft of the drive motor (231). The swing arm (232) can be driven to slide by the unlocking mechanism (24), so that the transmission keyway (2321) and the connecting key (2311) are separated from each other, so as to form a free state in which the swing arm (232) can swing freely; it also includes an unlocking spring (222) that can elastically drive the locking pin (22) to slide toward the unlocked state.

5. A device for attaching and detaching a grounding wire for a drone according to claim 4, characterized in that, The electric locking mechanism (23) also includes a return spring (2312) that elastically prevents the transmission keyway (2321) from separating from the connecting key (2311).

6. A UAV grounding wire attachment / removal device according to any one of claims 4-5, characterized in that, The unlocking mechanism (24) includes a pull ring (241), which is connected to the swing arm (232) via a pull rope (242) so that when the pull ring (241) is pulled outward, the swing arm (232) is driven to slide to the free state.

7. A device for attaching and detaching a grounding wire for a drone according to any one of claims 2-5, characterized in that, The positioning plate (32) has a locking hole (321) that engages with the locking pin (22).

8. A device for attaching and detaching a grounding wire for a drone according to any one of claims 1-5, characterized in that, The connecting frame (10) includes a vertically arranged fixed rod (11) and a rocker arm (12) hinged to the lower end of the fixed rod (11). The bottom of the rocker arm (12) is fixed to the middle of the crossbar (13). The housings of the two connecting clamps (20) are respectively fixed to the two ends of the crossbar (13). The hinge axis of the rocker arm (12) and the fixed rod (11) is horizontal and perpendicular to the axis of the crossbar (13).

Images