Automatic take-up device of mooring unmanned aerial vehicle

Abstract

The automatic take-up device of the mooring unmanned aerial vehicle comprises a cable wheel, a vertical frame, a first driving part and a stop assembly, the cable wheel is used for winding a cable, and the cable wheel is rotationally connected to the vertical frame; the first driving piece is arranged on the vertical frame and connected to the cable wheel, and the first driving piece is used for driving the cable wheel to rotate forwards so as to recycle the cable; the stopping assembly is arranged on the vertical frame and comprises a second driving piece and a stopping piece, the stopping piece is movably connected to the line wheel, and the second driving piece is connected to the stopping piece; when the first driving piece stops driving, the second driving piece is used for driving the retainer to be connected with the line wheel so as to prevent the line wheel from rotating; when the first driving piece drives, the retainer is separated from the line wheel to release the line wheel. According to the automatic take-up device, rotation of the cable wheel can be limited after cable take-up is completed, the problem that cables are arranged disorderly is solved, and the risk that the cables are damaged is reduced.

Description

Technical Field

[0001] This application relates to the field of tethered drone technology, and in particular to an automatic reel-up device for a tethered drone. Background Technology

[0002] A tethered drone is a special type of multi-rotor drone that connects to the ground via a tether cable to transmit power and communication signals, and has the ability to hover for extended periods. The tether cable retraction device is responsible for retrieving the tether cable and is a crucial component of the tethered drone system.

[0003] Tethered drone cable retrieval devices in related technologies retrieve cables by driving a reel to rotate and wind the cable around it. However, after retrieval, the cable can easily become loose due to vibrations from the reel, or even fall off, resulting in a disordered cable arrangement and increasing the risk of cable damage. Utility Model Content

[0004] To solve at least one of the above-mentioned technical problems, this application provides an automatic cable reel-up device for tethered drones, which can solve the problem of messy cable arrangement and reduce the risk of cable damage. The technical solution adopted is as follows.

[0005] The automatic cable reel device for a tethered drone provided in this application includes a cable reel, a stand, a first drive member, and a stop assembly. The cable reel is used to wind a cable and is rotatably connected to the stand. The first drive member is disposed on the stand and connected to the cable reel, and is used to drive the cable reel to rotate forward to reel in the cable. The stop assembly is disposed on the stand and includes a second drive member and a stop member. The stop member is movably connected to the cable reel, and the second drive member is connected to the stop member. When the first drive member stops driving, the second drive member drives the stop member to connect with the cable reel to prevent the cable reel from rotating. When the first drive member is driving, the stop member separates from the cable reel to release the cable reel.

[0006] In some embodiments of this application, the stop member includes a pin. When the first drive member stops driving, the second drive member drives the pin to extend and abut against the outer peripheral surface of the spool. When the first drive member is driven, the second drive member drives the pin to retract and separate from the outer peripheral surface of the spool.

[0007] In some embodiments of this application, the automatic reel-up device for the tethered drone includes a connecting shaft, one end of which is axially connected to the reel and the other end of which is connected to the stand; the outer peripheral side of the connecting shaft is provided with a socket.

[0008] In some embodiments of this application, multiple sockets are provided, and the multiple sockets are spaced apart along the outer periphery of the connecting shaft.

[0009] In some embodiments of the present application, the stop assembly further comprises a mounting bracket, the mounting bracket comprising a first connecting arm and a second connecting arm connected perpendicularly, the first connecting arm being connected to the stand, and the second connecting arm being connected to the second driving member, the second driving member being connected to the latch, the latch being arranged along the radial direction of the connecting shaft.

[0010] In some embodiments of the present application, the stand comprises a first stand and a second stand, the first driving member being arranged on the first stand, and the stop assembly being arranged on the second stand, the connecting shaft being arranged at one end of the line wheel facing the second stand.

[0011] In some embodiments of the present application, the first driving member is further configured to drive the line wheel to reverse rotation to release the cable.

[0012] In some embodiments of the present application, the line wheel is provided with a retaining ring at both ends.

[0013] In some embodiments of the present application, the surface of the line wheel is arranged as a conical surface along the axial direction.

[0014] In some embodiments of the present application, the surface of the line wheel is formed with a groove.

[0015] The embodiments of the present application have at least the following beneficial effects: by arranging a stop member on the automatic cable collecting device, when the device completes the cable recovery, i.e. when the first driving member stops driving, the stop member is connected to the line wheel by the second driving member to prevent the line wheel from rotating, avoiding the problem of cable loosening or winding disorder caused by inertia or collision during the transportation of the device, and ensuring that the cable can be neatly wound on the line wheel; when the device is recovering the cable, i.e. when the first driving member is driving, the stop member is separated from the line wheel to release the line wheel, so that the line wheel can rotate to recover the cable. In this way, the scheme of the present application can limit the rotation of the line wheel after completing the cable recovery, solve the problem of cable arrangement disorder, reduce the risk of cable damage, and improve the safety and reliability of the automatic cable collecting device. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further illustrated below in conjunction with the drawings and embodiments. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0017] Figure 1 The automatic cable collecting device structure schematic diagram of the tethered unmanned aerial vehicle provided by the embodiments of the present application;

[0018] Figure 2 The automatic cable collecting device structure explosion diagram of the tethered unmanned aerial vehicle provided by the embodiments of the present application;

[0019] Figure 3 The state schematic diagram of the stop member being separated from the line wheel provided by the embodiments of the present application;

[0020] Figure 4 The stopper provided by the embodiment of the present application is connected with the thread wheel.

[0021] Reference signs: 1000, automatic thread collecting device; 100, thread wheel; 110, blocking ring; 200, stand; 210, first stand; 220, second stand; 221, mounting hole; 222, snap spring; 300, first driving member; 400, stop assembly; 410, second driving member; 420, latch; 430, mounting bracket; 431, first connecting arm; 432, second connecting arm; 433, through hole; 500, connecting shaft; 510, insertion hole; 600, control element; 700, electric slip ring; 800, deep groove ball bearing. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below with reference to the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0023] In the description of the present application, it should be understood that if the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0024] In the description of the present application, if the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described that the first, the second is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0025] In the description of the application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example: can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0026] In the description of the application, if the description of the terms "as an embodiment", "an embodiment", "some examples", "some embodiments", "illustrative embodiments", "example", "specific example", "some examples" appears, it means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] Please refer to Figure 1 and Figure 2The application provides an automatic take-up device 1000 of a tethered unmanned aerial vehicle, which comprises a wire reel 100, a stand 200, a first driving member 300 and a stop assembly 400. The wire reel 100 is used for winding a cable and is rotationally connected to the stand 200. The first driving member 300 is arranged on the stand 200 and is connected to the wire reel 100. The first driving member 300 is used for driving the wire reel 100 to rotate in a forward direction to recover the cable. The stop assembly 400 is arranged on the stand 200 and comprises a second driving member 410 and a stop member. The stop member is movably connected to the wire reel 100, and the second driving member 410 is connected to the stop member. When the first driving member 300 stops driving, the second driving member 410 is used for driving the stop member to be connected to the wire reel 100 to prevent the wire reel 100 from rotating. When the first driving member 300 drives, the stop member is separated from the wire reel 100 to release the wire reel 100. By arranging the stop member on the automatic take-up device 1000, when the device completes the recovery of the cable, i.e. when the first driving member 300 stops driving, the stop member can be connected to the wire reel 100 by the second driving member 410 to prevent the wire reel 100 from rotating, so as to avoid the problems of loose cable or disordered winding caused by inertia or collision during the transportation of the device, and ensure that the cable can be neatly wound on the wire reel 100. When the device recovers the cable, i.e. when the first driving member 300 drives, the stop member can be separated from the wire reel 100 to release the wire reel 100, so that the wire reel 100 can rotate to recover the cable. In this way, the scheme of the application can limit the rotation of the wire reel 100 after the recovery of the cable, solve the problem of disordered cable arrangement, reduce the risk of cable damage, and improve the use safety and reliability of the automatic take-up device 1000.

[0028] Optionally, the automatic take-up device 1000 is provided with a control element 600. When the device needs to recover the cable, the control element 600 can control the second driving member 410 to operate in a forward direction, so that the second driving member 410 can drive the stop member to be separated from the wire reel 100, so that the wire reel 100 can keep rotating to recover the cable. After the device completes the recovery of the cable, the control element 600 can also control the second driving member 410 to operate in a reverse direction, so that the second driving member 410 can drive the stop member to be connected to the wire reel 100. Exemplarily, the control element 600 can be a PCB board or a micro control unit.

[0029] Optionally, the first driving member 300 and the second driving member 410 share one power supply, and in the initial state when the power supply is not powered, the stopper is connected with the wire reel 100. When the device needs to recycle the cable, the power supply supplies power to the first driving member 300 and the second driving member 410, the first driving member 300 in the powered state drives the wire reel 100 to rotate to recycle the cable, and the second driving member 410 in the powered state drives the stopper to separate from the wire reel 100 to keep the wire reel 100 rotating; when the device completes the cable recycling, the power supply stops supplying power to the first driving member 300 and the second driving member 410, the first driving member 300 in the power-off state stops working, and the wire reel 100 also stops rotating, and the second driving member 410 in the power-off state stops working, so that the stopper returns to the initial state of being connected with the wire reel 100.

[0030] Please refer to Figure 3 and Figure 4 In some embodiments, the stopper includes a latch 420, and the second driving member 410 is configured to drive the latch 420 to extend to abut against the outer circumferential surface of the wire reel 100 when the first driving member 300 stops driving; and the second driving member 410 is configured to drive the latch 420 to retract to separate from the outer circumferential surface of the wire reel 100 when the first driving member 300 drives. It can be understood that when the latch 420 extends and abuts against the outer circumferential surface of the wire reel 100, the latch 420 can prevent the wire reel 100 from rotating, and when the latch 420 retracts and separates from the outer circumferential surface of the wire reel 100, the wire reel 100 can resume rotating. The latch 420 has a simple structure and is convenient to disassemble and assemble, and the rotation state of the wire reel 100 is controlled by the latch 420, which is conducive to simplifying the structure of the device and improving the portability of the device.

[0031] As an alternative embodiment, the stopper can also be a pair of friction plates arranged in opposite directions along the axis of the wire reel 100, and when the first driving member 300 stops driving, the second driving member 410 can drive the two opposite friction plates to clamp the wire reel 100, thereby preventing the wire reel 100 from rotating.

[0032] In some embodiments, the automatic take-up device 1000 of the tethered UAV includes a connecting shaft 500, one end of the connecting shaft 500 is axially connected with the line wheel 100, and the other end is connected with the stand 200; the outer peripheral side of the connecting shaft 500 is provided with a socket 510. By connecting one end of the connecting shaft 500 with the line wheel 100 and the other end with the stand 200, and providing the socket 510 on the outer peripheral side of the connecting shaft 500, the control effect of the pin 420 on the rotating state of the line wheel 100 can be enhanced by connecting the pin 420 with the socket 510, and the pin 420 can accurately stop the line wheel 100. Specifically, the stopper is arranged outside the socket 510, when the first driving member 300 stops driving, the second driving member 410 can drive the pin 420 to extend and plug into the socket 510, at this time the pin 420 can limit the connecting shaft 500 to prevent the connecting shaft 500 from continuing to rotate, since the connecting shaft 500 is axially connected with the line wheel 100, in the case that the connecting shaft 500 is limited to rotate, the line wheel 100 also cannot rotate. When the first driving member 300 drives, the second driving member 410 can drive the pin 420 to retract and separate from the socket 510, at this time the connecting shaft 500 can be released and can enter the rotating state, since the connecting shaft 500 is axially connected with the line wheel 100, in the case that the connecting shaft 500 is in the rotating state, the line wheel 100 can also rotate.

[0033] Optionally, the connecting shaft 500 is sleeved with a shaft coupling, and the outer peripheral side of the shaft coupling is provided with the socket 510.

[0034] Optionally, the outer peripheral side of the connecting shaft 500 can be provided with a groove, and the pin 420 can be connected with the groove.

[0035] In some embodiments, the socket 510 is provided in multiple numbers, and the multiple sockets 510 are arranged in intervals along the outer peripheral direction of the connecting shaft 500. By providing multiple sockets 510 and arranging the multiple sockets 510 in intervals along the outer peripheral direction of the connecting shaft 500, the space of the connecting shaft 500 can be fully utilized to set multiple positions connected with the pin 420, so that the pin 420 can be connected with the socket 510 of the connecting shaft 500 at multiple times during the rotation of the line wheel 100, thereby flexibly adapting to the time of recovering the cable by the device, and after the device completes the recovery of the cable, the pin 420 can limit the line wheel 100 to continue to rotate.

[0036] Optionally, the sockets 510 can be continuously arranged along the outer peripheral direction of the connecting shaft 500, so that the pin 420 can be connected with the socket 510 at any time during the rotation of the line wheel 100 to stop the rotation of the line wheel 100.

[0037] Please refer to Figure 1 and Figure 2In some embodiments, the stop component 400 further comprises a mounting bracket 430, which comprises a first connecting arm 431 and a second connecting arm 432 connected perpendicularly, the first connecting arm 431 is connected to the stand 200, and the second connecting arm 432 is connected to the second driving member 410, which is connected to the latch 420 arranged along the radial direction of the connecting shaft 500. By arranging the stop component 400 on the stand 200 by means of the mounting bracket 430, the volume of the stand 200 can be reduced, and the structure of the automatic take-up device 1000 can be more compact. Meanwhile, by arranging the latch 420 along the radial direction of the connecting shaft 500, the latch 420 can be conveniently connected to the insertion hole 510 arranged on the outer circumferential side of the connecting shaft 500, the stability of the connection between the latch 420 and the insertion hole 510 can be improved, and thus the reliability of the rotation of the line wheel 100 controlled by the latch 420 can be improved.

[0038] Optionally, the second connecting arm 432 is provided with a through hole 433 allowing the latch 420 to pass along the direction in which the latch 420 extends, the through hole 433 can guide the extension or retraction of the latch 420, and thus the latch 420 can be smoothly connected to the insertion hole 510.

[0039] In some embodiments, the stand 200 comprises a first stand 210 and a second stand 220, the first driving member 300 is arranged on the first stand 210, the stop component 400 is arranged on the second stand 220, and the connecting shaft 500 is arranged at one end of the line wheel 100 facing the second stand 220. By arranging the stand of the device into the first stand 210 and the second stand 220, the assembly of the device can be more flexible, the structure can be more compact, the volume of the device can be reduced, and space waste can be avoided. Specifically, the first driving member 300 is arranged on the first stand 210 and connected to the line wheel 100, the first connecting arm 431 of the mounting bracket 430 is connected to the second stand 220 so as to arrange the stop component 400 on the second stand 220, one end of the connecting shaft 500 is connected to the line wheel 100 in an axial direction and the other end is connected to the second stand 220, so that the line wheel 100 can be movably arranged between the first stand 210 and the second stand 220. By arranging the components of the device on both sides of the line wheel 100 by means of the first stand 210 and the second stand 220, the load of the device can be balanced, and the stability of the device can be improved.

[0040] Optionally, the automatic take-up device 1000 of the tethered unmanned aerial vehicle further comprises an electric slip ring 700 and a deep groove ball bearing 800; the electric slip ring 700 is sleeved on the connecting shaft 500 and connected with the line reel 100; the second stand 220 is provided with a mounting hole 221, the connecting shaft 500 is sleeved with the inner periphery of the deep groove ball bearing 800, and the outer periphery of the deep groove ball bearing 800 is sleeved with the mounting hole 221. Specifically, the connecting shaft 500 is sleeved with the inner periphery of the deep groove ball bearing 800 through a snap spring 222, and the outer periphery of the deep groove ball bearing 800 is sleeved with the mounting hole 221 of the second stand 220 through the snap spring 222.

[0041] Optionally, the distance between the first stand 210 and the second stand 220 can be adjusted to adapt to the assembly requirements of line reels 100 or device components of different sizes.

[0042] In some embodiments, the first driving member 300 is also used to drive the line reel 100 to reverse rotation to release the cable. When the unmanned aerial vehicle ascends in flight, the cable needs to be pulled up. By driving the line reel 100 to reverse rotation through the first driving member 300, power can be provided for releasing the cable, reducing the friction between the cable and the line reel 100 during the unwinding process, and helping to reduce the load borne by the unmanned aerial vehicle when ascending.

[0043] Optionally, the first driving member 300 continuously drives the line reel 100 to reverse rotation to release the cable during the ascending process of the unmanned aerial vehicle in flight.

[0044] In some embodiments, the line reel 100 is provided with a check ring 110 at both ends. By providing the check ring 110 at both ends of the line reel 100, the cable can be limited, avoiding the cable from being detached from the line reel 100 during the cable recovery process, and ensuring that the cable can be neatly wound on the line reel 100.

[0045] Optionally, the check ring 110 is detachably sleeved at both ends of the line reel 100, one end of the line reel 100 is connected with the first driving member 300, and the other end of the line reel 100 is axially connected with the connecting shaft 500; or the first driving member 300 is connected with the check ring 110 sleeved at one end of the line reel 100, and the connecting shaft 500 is axially connected with the check ring 110 sleeved at the other end of the line reel 100.

[0046] Optionally, the check ring 110 is fixedly arranged at both ends of the line reel 100, or the check ring 110 is integrally formed with the line reel 100.

[0047] In some embodiments, the surface of the wire wheel 100 is tapered axially. It can be understood that the surface of the wire wheel 100 is tapered axially, that is, the diameter of the wire wheel 100 gradually decreases from one end to the other end, and when the wire cable is recovered, the wire cable is gradually wound from the end of the wire wheel 100 with a larger diameter to the end of the wire wheel 100 with a smaller diameter as the wire wheel 100 rotates. By setting the surface of the wire wheel 100 as a tapered surface, the tension of the wire cable can be maintained during the winding process, the wire cable can be arranged neatly on the wire wheel 100, the wire cable can be prevented from being loosely and randomly wound, and the stable operation of the tethered unmanned aerial vehicle can be ensured.

[0048] In some embodiments, the surface of the wire wheel 100 is formed with grooves. It can be understood that the grooves on the surface of the wire wheel 100 can accommodate and limit a single wire cable, and thus by forming grooves on the surface of the wire wheel 100, the wire cable can be arranged neatly during the recovery process, the wire cable can be rotated and tightened along the lines on the wire wheel 100, and the wire cable can be prevented from being loosely or randomly wound.

[0049] Optionally, the grooves on the surface of the wire wheel 100 can be continuously arranged circumferentially around the wire wheel 100, that is, a continuous spiral groove is formed on the surface of the wire wheel 100, or the grooves on the surface of the wire wheel 100 can be arranged at intervals circumferentially around the wire wheel 100.

[0050] Optionally, the grooves on the surface of the wire wheel 100 form an angle with the circumferential direction of the wire wheel 100.

[0051] The embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the scope of knowledge possessed by a person skilled in the art without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. An automatic take-up device for a tethered drone, characterized in that: Comprising a line wheel for winding a cable; a stand, the line wheel being pivotally connected to the stand; a first driving member provided on the stand and connected to the line wheel, the first driving member being used to drive the line wheel to rotate forward to recover a cable; a stop assembly provided on the stand, the stop assembly comprising a second driving member and a stop member, the stop member being movably connected to the line wheel, the second driving member being connected to the stop member; when the first driving member stops driving, the second driving member is used to drive the stop member to connect with the line wheel to prevent the line wheel from rotating; when the first driving member drives, the stop member is separated from the line wheel to release the line wheel.

2. The automatic take-up device for a tethered drone according to claim 1, characterized in that: The stop member comprises a latch, when the first driving member stops driving, the second driving member is used to drive the latch to extend to abut against the outer circumferential surface of the line wheel; when the first driving member drives, the second driving member is used to drive the latch to retract to separate from the outer circumferential surface of the line wheel.

3. The automatic take-up device of a tethered drone according to claim 2, characterized in that: The automatic cable recovery device of the tethered unmanned aerial vehicle comprises a connecting shaft, one end of the connecting shaft is axially connected to the line wheel, and the other end of the connecting shaft is connected to the stand; the outer circumferential side of the connecting shaft is provided with a socket, and the latch can be connected with the socket.

4. The automatic take-up device of a tethered drone according to claim 3, characterized in that: The socket is provided with a plurality of sockets, and the plurality of sockets are arranged at intervals along the outer circumferential direction of the connecting shaft.

5. An automatic take-up device for a tethered drone according to claim 3 or 4, characterised in that: The stop assembly further comprises a mounting bracket, the mounting bracket comprises a first connecting arm and a second connecting arm connected perpendicularly, the first connecting arm is connected to the stand, the second connecting arm is connected to the second driving member, the second driving member is connected to the latch, and the latch is arranged to extend along the radial direction of the connecting shaft.

6. The automatic take-up device of a tethered drone according to claim 5, characterized in that: The stand comprises a first stand and a second stand, the first driving member is provided on the first stand, the stop assembly is provided on the second stand, and the connecting shaft is provided at one end of the line wheel towards the second stand.

7. The automatic take-up device for a tethered drone according to claim 1, characterized in that: The first driving member is also used to drive the line wheel to rotate reversely to release a cable.

8. The automatic take-up device for a tethered drone according to claim 1, characterized in that: Both ends of the line wheel are provided with a check ring.

9. The automatic take-up device for a tethered drone according to claim 1, wherein: The surface of the line wheel is arranged as a conical surface along the axial direction.

10. The automatic take-up device for a tethered drone according to claim 1, characterized in that: The surface of the line wheel is formed with a groove.

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