Automatic unhooking device for mounting and transporting unmanned aerial vehicle

Abstract

The utility model belongs to the technical field of mounting transportation devices, and discloses an automatic unhooking device for mounting transportation of an unmanned aerial vehicle, which comprises a lifting ring and two connecting arms rotationally connected to the lifting ring, the two connecting arms are rotationally connected with lifting hook arms, and the two lifting hook arms are rotationally connected in a crossed manner. The automatic unhooking device further comprises a spring, a locking mechanism and an unlocking mechanism. The tail ends of the two lifting hook arms are expanded outwards through the spring; the outward opening angle of the tail ends of the two lifting hook arms is locked through the locking mechanism; the unlocking mechanism is started when the target is in a lifted state, and the started unlocking mechanism can drive the tail ends of the two lifting hook arms to be closed inwards and unlock the locking mechanism in an inward closing mode. In conclusion, the automatic unhooking device can effectively realize automatic unhooking of the materials when the unmanned aerial vehicle is mounted and transported, is not influenced by the weight of the materials, does not need to be controlled by a steering engine, and is simple to operate and high in safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of mounting and transporting devices, specifically relating to an automatic unhooking device for drone mounting and transporting. Background Technology

[0002] Due to their ease of operation, high efficiency, and speed, drones are increasingly being widely used in the field of goods transportation. When using drones to transport goods, hooks or similar devices are needed to attach the goods to the bottom of the drone. Existing hooks are basically divided into two categories:

[0003] One type uses servo motor control to achieve automatic opening and closing of the hook. Although this type of hook can automatically unhook materials at the target location, it is complicated to operate and requires the drone to supply power to the servo motor, which reduces the drone's flight time.

[0004] Another type is a purely mechanical locking structure based on manual operation, which cannot achieve automatic unhooking after transportation. Utility Model Content

[0005] In view of this, in order to solve the problems mentioned in the background art, the purpose of this utility model is to provide an automatic unhooking device for drone-mounted transportation.

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

[0007] An automatic unhooking device for drone-mounted transport includes a lifting ring and two connecting arms rotatably connected to the lifting ring. Each of the two connecting arms is rotatably connected to a hook arm, and the two hook arms are rotatably connected in a cross manner.

[0008] The automatic unhooking device further includes a spring, a locking mechanism, and an unlocking mechanism;

[0009] The spring causes the ends of the two hook arms to open outwards;

[0010] The locking mechanism locks the outward opening angle of the two hook arm ends;

[0011] The unlocking mechanism is activated when the target is in a suspended state, and after activation, the unlocking mechanism can drive the ends of the two hook arms to close inward, thereby unlocking the locking mechanism by closing inward.

[0012] Preferably, the two connecting arms include a first connecting arm and a second connecting arm, and the two hook arms include a first hook arm and a second hook arm, wherein the first connecting arm is rotatably connected to the first hook arm, and the second connecting arm is rotatably connected to the second hook arm.

[0013] Preferably, the two ends of the spring are connected to the first connecting arm and the first hook arm respectively, and the spring is connected at the cross-rotation connection of the two hook arms.

[0014] Preferably, the locking mechanism includes a locking hook and a locking tongue that can be interlocked. The locking tongue is fixed to the second hook arm, the locking hook is rotatably mounted on the second connecting arm, and a tension spring connects the locking hook and the second connecting arm.

[0015] Preferably, the ends of both hook arms are hook-shaped.

[0016] Preferably, each of the two hook arms has a mounting groove at its end, and the unlocking mechanism is embedded in the mounting groove.

[0017] Preferably, the unlocking mechanism includes two magnetic bases that can attract each other, the two magnetic bases are respectively fixedly connected to the ends of two hook arms, and the magnetic attraction force of the two magnetic bases is greater than the deformation elastic force of the spring.

[0018] Preferably, the unlocking mechanism further includes a magnetic shield that can be placed outside the magnetic base, and the magnetic shield is movably connected to the end of the hook arm.

[0019] Preferably, the unlocking mechanism further includes a rotating rod rotatably mounted at the end of the hook arm, the magnetic shield being connected to one end of the rotating rod, and the other end of the rotating rod extending inward toward the hook arm and out of the mounting groove.

[0020] Preferably, the rotating shaft on the rotating rod is eccentrically arranged so that the distance between the magnetic shield and the rotating shaft is greater than the distance between the other end of the rotating rod and the rotating shaft.

[0021] Compared with the prior art, this utility model has the following advantages:

[0022] (1) The automatic unhooking device of this utility model uses two hook arms to form a closed hanging ring, and cooperates with the locking mechanism to realize the locking limitation when the closed hanging ring is installed. After the UAV takes off, the weight of the material itself can pull down the closed hanging ring, thereby keeping the closed hanging ring locked. At the same time, the locking mechanism can be automatically unlocked. Based on this, when the material lands, the hook arm can be automatically opened and unhooked under the spring rebound. No servo motor control is required, the operation is simple and the safety is high.

[0023] (2) An auxiliary unlocking mechanism is set up, which includes a magnetic base, a magnetic shield, and a rotating rod. During installation, the magnetic shield is fitted over the magnetic base to isolate and shield the two magnetic bases, thereby avoiding interference with the locking mechanism. After the UAV takes off, the weight of the material itself pulls down one end of the rotating rod, thereby driving the rotating rod to rotate and separating the magnetic shield from the magnetic base. The two magnetic bases attract each other, causing the closed hanging ring to lock inward, thus realizing the automatic unlocking of the locking mechanism. Based on this, when the weight of the material is less than the spring deformation force, the whole device can also achieve automatic disengagement. Attached Figure Description

[0024] Figure 1 This is a perspective view of the automatic unhooking device of this utility model when it is released;

[0025] Figure 2 This is a perspective view of the automatic unhooking device of this utility model when it is engaged and locked.

[0026] Figure 3 This is a sectional view of the hook arm in this utility model;

[0027] Figure 4 This is a schematic diagram of the assembly of the magnetic base, magnetic shield, and rotating rod in this utility model;

[0028] Figure 5 This is a schematic diagram of the unlocking mechanism in this utility model;

[0029] In the diagram: 1. Lifting ring; 2. Connecting arm; 21. First connecting arm; 22. Second connecting arm; 3. Hook arm; 31. First hook arm; 32. Second hook arm; 4. Spring; 5. Locking mechanism; 51. Locking hook; 52. Locking tongue; 6. Unlocking mechanism; 61. Magnetic base; 62. Magnetic shield; 63. Rotating rod. 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] Example 1

[0032] like Figure 1 and Figure 2 As shown, an automatic unhooking device for drone-mounted transport includes a lifting ring 1 and two connecting arms 2 rotatably connected to the lifting ring 1, each of the two connecting arms 2 being rotatably connected to a hook arm 3.

[0033] The ends of the two hook arms 3 are both hook-shaped, and the two hook arms 3 are connected by a cross-rotation.

[0034] The two connecting arms 2 include a first connecting arm 21 and a second connecting arm 22, and the two hook arms 3 include a first hook arm 31 and a second hook arm 32, wherein the first connecting arm 21 is rotatably connected to the first hook arm 31, and the second connecting arm 22 is rotatably connected to the second hook arm 32.

[0035] A spring 4 is connected between the first connecting arm 21 and the first hook arm 31, and the spring 4 is connected at the cross-rotation connection of the two hook arms 3.

[0036] The second connecting arm 22 and the second hook arm 32 can be locked together by the locking mechanism 5. The locking mechanism 5 includes a locking hook 51 and a locking tongue 52 that can be interlocked. The locking tongue 52 is fixed on the second hook arm 32, and the locking hook 51 is rotatably mounted on the second connecting arm 22. A tension spring 53 is connected between the locking hook 51 and the second connecting arm 22.

[0037] The specific operation method of the automatic unhooking device in this embodiment is as follows:

[0038] Installation: Hold both connecting arms 2 and press them together to bring ends a / b in the diagram closer together. Simultaneously, spring 4 is stretched, and connecting arms 2 and hook arm 3 are then... Figure 1 The state change shown is Figure 2 The state shown. In Figure 2 In the shown state, the ends of the two hook arms 3 are closed to form a hanging ring, and the material hanging rod (not shown in the figure) is confined inside the closed hanging ring. Then, the locking hook 51 is rotated so that the free end of the locking hook 51 engages with the locking tongue 52, thereby confining the second connecting arm 22 and the second hook arm 32 to their current state, that is, the entire device remains in place. Figure 2 The state shown.

[0039] Lifting and transportation: The drone is connected to the lifting ring 1 via a rope. When the drone takes off, the weight of the material itself causes the material hanging rod to pull down the ends of the two hook arms 3 within the closed hanging ring. This pulls down both ends a / b and drives them closer to each other. In this state, end a drives the locking tongue 52 to move closer to the middle, thereby causing the locking tongue 52 to disengage from the locking hook 51. The locking hook 51 can then rotate back to its original position under the pull of the tension spring 53, completing the automatic unlocking of the locking mechanism 5 during transportation.

[0040] Automatic unhooking: When the materials are transported to the target location, they are placed on the ground. At this time, the pulling force of the material hanging rod on the closed hanging ring disappears. Under the rebound of the spring 4, the cross-rotation connection of the two hook arms 3 is pulled closer to the hanging ring 1, thereby driving the a / b ends to move away from each other, and thus causing the ends of the two hook arms 3 to open outward, completing the automatic unhooking of the whole device.

[0041] Example 2

[0042] In the above embodiment 1, the premise for the automatic unlocking of the locking mechanism 5 based on the weight of the material itself is that the weight of the material itself is greater than the deformation force of the spring 4. Therefore, after the drone takes off and lifts the material, the ends of the two hook arms 3 and the a / b ends can be pulled down by the material hanging rod. If the weight of the material itself is less than or equal to the deformation force of the spring 4, the downward pulling force generated by the material hanging rod on the closed hanging ring is less than the upward pulling force generated by the spring 4 on the closed hanging ring. This keeps the a / b ends in a state of separation and outward extension. In this state, the locking tongue 52 will not disengage from the locking hook 51. Therefore, even if the material falls after being transported to the target location, the entire device will still remain in place. Figure 2 In the state shown, automatic unhooking will not be performed.

[0043] Based on this problem, this embodiment makes further improvements to the overall device:

[0044] This embodiment provides an automatic unhooking device for drone-mounted transport, including the same lifting ring 1, two connecting arms 2, two hook arms 3, spring 4, and locking mechanism 5 as in Embodiment 1 above;

[0045] In addition, combined Figures 3-5 As shown, the automatic unhooking device in this embodiment also includes an unlocking mechanism 6 disposed at the end of the hook arm 3.

[0046] Both ends of the two hook arms 3 are provided with mounting slots, and the unlocking mechanism 6 is embedded in the mounting slots. The unlocking mechanism 6 includes two magnetic seats 61 that can attract each other, and the two magnetic seats 61 are fixedly connected to the ends of the two hook arms 3 respectively. A rotating rod 63 is rotatably mounted on the ends of both hook arms 3, and one end of the rotating rod 63 is connected to a magnetic shielding cover 62, while the other end extends inwards towards the hook arm 3 and outwards from the mounting slot. Figure 3 and Figure 4 As shown, the rotation of the rotating rod 63 allows the magnetic shield 62 to be fitted onto the outside of the magnetic base 61.

[0047] In a preferred embodiment of this example, the rotating shaft on the rotating rod 63 is eccentrically positioned so that the distance between the magnetic shield 62 and the rotating shaft is greater than the distance between the other end of the rotating rod 63 and the rotating shaft.

[0048] In summary, the specific operation method of the automatic unhooking device in this embodiment is as follows:

[0049] The installation is the same as in Example 1 above;

[0050] Lifting and transportation: The drone is connected to the lifting ring 1 via a lanyard. After the drone takes off, the weight of the material itself causes the material hanging rod to pull down on the ends of the two hook arms 3 within the closed lifting ring. At this time, combined with... Figure 5 As shown in the diagram, when the material hanging rod presses down, one end of the rotating rod 63 extends into the closed hanging ring, thereby driving the rotating rod 63 to rotate and causing the magnetic shield 62 connected to the rotating rod 63 to lift. At this time, under the mutual attraction of the two magnetic seats 61, the ends of the two hook arms 3 close inward, thereby driving the a / b ends to move closer to each other. In this state, the a end drives the locking tongue 52 to move closer to the middle, thereby causing the locking tongue 52 to disengage from the restriction of the locking hook 51. The locking hook 51 can then rotate back to its original position under the pull of the tension spring 53, completing the automatic unlocking of the locking mechanism 5 during transportation.

[0051] Automatic unhooking: When the materials are transported to the destination and placed on the ground, the downward pull of the material hanging rod on the closed hanging ring disappears. Based on the eccentric rotation of the rotating rod 63 and the self-weight of the magnetic shielding cover 62, the rotating rod 63 can rotate back to its original position, that is, the magnetic shielding cover 62 can be re-attached to the outside of the magnetic base 61. After both magnetic bases 61 are covered by the magnetic shielding cover 62, the attraction between the two magnetic bases 61 decreases. As a result, under the rebound of the spring 4, the cross-rotation connection of the two hook arms 3 is pulled closer to the lifting ring 1, thereby driving the a / b ends away from each other, and thus causing the ends of the two hook arms 3 to open outward, completing the automatic unhooking of the entire device.

[0052] In this embodiment, the magnetic shield 62 serves to isolate and weaken the magnetic attraction between the two magnetic bases 61. Therefore, the magnetic shield 62 can be made from existing materials capable of achieving magnetic shielding. Furthermore, the magnetic attraction between the two magnetic bases 61 is limited to be greater than the deformation force of the spring 4, thereby ensuring that the closed hanging ring remains closed during hoisting and transportation, improving transportation safety.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic unhooking device for unmanned aerial vehicle (UAV) mounting and transportation, comprising a lifting ring (1) and two connecting arms (2) rotatably connected to the lifting ring (1), wherein each of the two connecting arms (2) is rotatably connected to a hook arm (3), and the two hook arms (3) are rotatably connected in a cross manner, characterized in that: The automatic unhooking device also includes a spring (4), a locking mechanism (5), and an unlocking mechanism (6); The spring (4) causes the ends of the two hook arms (3) to open outward; The locking mechanism (5) locks the angle at which the ends of the two hook arms (3) open outward; The unlocking mechanism (6) is activated when the target is in a suspended state, and the unlocking mechanism (6) after activation can drive the ends of the two hook arms (3) to close inward, and unlock the locking mechanism (5) in this inward closing manner.

2. The automatic unhooking device for drone-mounted transport according to claim 1, characterized in that: The two connecting arms (2) include a first connecting arm (21) and a second connecting arm (22), and the two hook arms (3) include a first hook arm (31) and a second hook arm (32). The first connecting arm (21) is rotatably connected to the first hook arm (31), and the second connecting arm (22) is rotatably connected to the second hook arm (32).

3. The automatic unhooking device for drone-mounted transport according to claim 2, characterized in that: The two ends of the spring (4) are connected to the first connecting arm (21) and the first hook arm (31) respectively, and the spring (4) is connected at the cross-rotation connection of the two hook arms (3).

4. The automatic unhooking device for drone-mounted transport according to claim 2, characterized in that: The locking mechanism (5) includes a locking hook (51) and a locking tongue (52) that can be interlocked. The locking tongue (52) is fixed on the second hook arm (32), and the locking hook (51) is rotatably mounted on the second connecting arm (22). A tension spring (53) is connected between the locking hook (51) and the second connecting arm (22).

5. The automatic unhooking device for drone-mounted transport according to claim 1, characterized in that: The ends of both hook arms (3) are bent into hook shapes.

6. The automatic unhooking device for drone-mounted transport according to claim 1, characterized in that: The ends of the two hook arms (3) are provided with mounting slots, and the unlocking mechanism (6) is embedded in the mounting slots.

7. An automatic unhooking device for drone-mounted transport according to claim 6, characterized in that: The unlocking mechanism (6) includes two magnetic seats (61) that can attract each other. The two magnetic seats (61) are fixedly connected to the ends of the two hook arms (3) respectively, and the magnetic attraction force of the two magnetic seats (61) is greater than the deformation elastic force of the spring (4).

8. An automatic unhooking device for drone-mounted transport according to claim 7, characterized in that: The unlocking mechanism (6) also includes a magnetic shield (62) that can be covered outside the magnetic base (61), and the magnetic shield (62) is movably connected to the end of the hook arm (3).

9. An automatic unhooking device for drone-mounted transport according to claim 8, characterized in that: The unlocking mechanism (6) further includes a rotating rod (63) rotatably mounted at the end of the hook arm (3), the magnetic shield (62) is connected to one end of the rotating rod (63), and the other end of the rotating rod (63) extends into the hook arm (3) and out of the mounting groove.

10. An automatic unhooking device for drone-mounted transport according to claim 9, characterized in that: The rotating shaft on the rotating rod (63) is eccentrically arranged so that the distance between the magnetic shield (62) and the rotating shaft is greater than the distance between the other end of the rotating rod (63) and the rotating shaft.

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