Direct throwing mechanism for recovery parachute of unmanned aerial vehicle

Abstract

The unmanned aerial vehicle comprises a vehicle body, a parachute cord and the recovery parachute, a parachute cabin is arranged in the vehicle body, one end of the parachute cord is connected into the parachute cabin, the other end of the parachute cord is fixedly connected with the recovery parachute, the unmanned aerial vehicle further comprises a casting assembly, and the casting assembly comprises a double-arm torsion spring, a parachute cover and a locking piece. Two first torsion arms of the double-arm torsion spring are rotationally connected with the inner bottom wall of the parachute bay, two second torsion arms of the double-arm torsion spring are both in sliding connection with the parachute cover, the locking piece is arranged on one side of the top of the parachute bay and used for opening or closing the parachute cover, and when the parachute cover is closed, the recovery parachute and the parachute cord are in a first state of being stored in the parachute bay; and the two first torsion arms are located below the recovery parachute, and when the parachute cover is opened, the recovery parachute and the parachute cord are in a second state of being cast out of the parachute cabin. The problems that an effective parachute throwing assembly is not arranged in the unmanned aerial vehicle, and when the recovered parachute is taken out of a cabin, the recovered parachute is easily blown and wound on a fuselage or a propeller by longitudinal airflow from the direction of a nose to cause air crash accidents are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of UAV assisted landing, and particularly relates to a direct throwing mechanism for a recovery parachute of a UAV. Background Art

[0002] UAVs have great advantages such as being able to adapt to complex and harsh environments, not requiring human pilots, and not causing human losses, so they have been more and more widely used. At present, UAV technology has been used in fields such as remote sensing measurement and control, aerial photography mapping, and environmental reconnaissance.

[0003] With the increasing applications, UAV technology has become increasingly popular and the types of UAVs have tended to be diversified. Among them, small and medium-sized fixed-wing UAVs account for a large proportion in the UAV field. Small and medium-sized fixed-wing UAVs have the advantages of secret flight tracks, moderate flight ranges, convenient launching and recovery, and low comprehensive costs.

[0004] In the prior art, small and medium-sized fixed-wing UAVs without taxiing landing conditions cannot be equipped with and use complex and heavy high-speed parachute systems such as parachute rockets to achieve assisted parachute landing due to their small body capacity and limited load capacity. However, without an effective parachute throwing device, when the recovery parachute exits the cabin, it is very easy to be blown and entangled by the longitudinal airflow from the nose direction to the fuselage or the propeller, resulting in a plane crash accident. Therefore, at present, many small and medium-sized fixed-wing UAVs have to abandon the active parachute landing method and instead adopt passive assisted landing methods with high loss rates such as hitting a net, hitting a wire, or direct sliding and falling. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, provide a direct throwing mechanism for a recovery parachute of a UAV, and solve the problem that there is no effective parachute throwing component in the prior art UAV, and when the recovery parachute exits the cabin, it is very easy to be blown and entangled by the longitudinal airflow from the nose direction to the fuselage or the propeller, resulting in a plane crash accident.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The present utility model provides a direct throwing mechanism for a recovery parachute of an unmanned aerial vehicle. The unmanned aerial vehicle includes a fuselage, a parachute rope, and a recovery parachute. An umbrella cabin is provided inside the fuselage. One end of the parachute rope is connected inside the umbrella cabin, and the other end of the parachute rope is fixedly connected to the recovery parachute. It further includes a throwing assembly, which includes a double-arm torsion spring, an umbrella cover, and a locking member. The two first torsion arms of the double-arm torsion spring are rotatably connected to the inner bottom wall of the umbrella cabin, and the two second torsion arms of the double-arm torsion spring are both slidably connected to the umbrella cover. The locking member is arranged on one side of the top of the umbrella cabin, and the locking member is used to open or close the umbrella cover. When the umbrella cover is closed, the recovery parachute and the parachute rope are in a first state of being stored inside the umbrella cabin, and the two first torsion arms are located below the recovery parachute. When the umbrella cover is opened, the recovery parachute and the parachute rope are in a second state of being thrown out of the umbrella cabin.

[0008] In some embodiments, a plurality of support rods are connected between the two first torsion arms of the two double-arm torsion springs.

[0009] In some embodiments, a sleeve is fixedly provided on one side of the inner bottom wall of the umbrella cabin. A guide rod is connected between the ends of the two first torsion arms, and the guide rod is inserted into the sleeve.

[0010] In some embodiments, a hanging ring is fixedly provided on the inner bottom wall of the umbrella cabin, and one end of the parachute rope is fixedly connected to the hanging ring.

[0011] In some embodiments, the locking member is an electric plug lock. A limiting hole is provided on one side of the umbrella cover, and the locking tongue of the electric plug lock can be inserted into the limiting hole.

[0012] In some embodiments, two connecting blocks are provided on the umbrella cover at intervals, and through holes are respectively formed through the two connecting blocks. The two second torsion arms respectively slide through the two through holes, and limiting blocks are respectively provided at the ends of the two second torsion arms. When the umbrella cover is opened, the two limiting blocks can respectively block corresponding to the two connecting blocks.

[0013] In some embodiments, the width of the umbrella cover is smaller than the width of the umbrella cabin. When the umbrella cover is opened, the other side of the umbrella cover can extend into the umbrella cabin, and the axes of the first torsion arm and the second torsion arm are parallel.

[0014] In some embodiments, the double-arm torsion spring further includes two spring coils, and the two spring coils are integrally formed with the first torsion arm and the second torsion arm.

[0015] In some embodiments, the umbrella cover is made of a carbon fiber board or an aviation aluminum plate.

[0016] In some embodiments, the double-arm torsion spring is made of carbon steel wire or stainless steel wire.

[0017] Compared with the prior art, a direct throwing mechanism for a recovery parachute of a drone provided by the present utility model is characterized in that two first torsion arms of a double-arm torsion spring are rotationally connected to the inner bottom wall of a parachute cabin, two second torsion arms of the double-arm torsion spring are both slidably connected to a parachute cover, a locking member is arranged on one side of the top of the parachute cabin, and the locking member is used to open or close the parachute cover. When the parachute cover is closed, the recovery parachute and the parachute rope are in a first state of being stored in the parachute cabin, and the two first torsion arms are located below the recovery parachute. When the parachute cover is opened, the recovery parachute is quickly thrown out of the parachute cabin by the restoring force of the two first torsion arms, and it can ensure that the recovery parachute is thrown to a certain height, effectively avoiding the situation that the recovery parachute is blown and wound around the fuselage or the propeller when leaving the cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a schematic structural diagram of a direct throwing mechanism for a recovery parachute of a drone provided by an embodiment of the present utility model;

[0019] Figure 2 FIG. 10 is a schematic structural diagram of another perspective of a direct throwing mechanism for a recovery parachute of a drone provided by an embodiment of the present utility model;

[0020] Figure 3 FIG. 14 is Figure 2 an enlarged schematic diagram of area A in FIG. 14;

[0021] Figure 4 FIG. 20 is a schematic structural diagram when the parachute cover is closed provided by an embodiment of the present utility model;

[0022] Figure 5 FIG. 24 is a schematic structural diagram when the recovery parachute is opened provided by an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] In order to solve the technical problem in the prior art that there is no effective parachute throwing component in the drone, and when the recovery parachute leaves the cabin, it is very easy to be blown and wound around the fuselage or the propeller by the longitudinal air flow from the nose direction, resulting in a plane crash accident, the present utility model provides a direct throwing mechanism for a recovery parachute of a drone, which can effectively throw the recovery parachute to a certain height.

[0025] Please refer to Figures 1-5, in an embodiment of the present utility model, a direct throwing mechanism for a recovery parachute 13 of an unmanned aerial vehicle, the unmanned aerial vehicle 1 includes a fuselage 11, a parachute rope 12 and a recovery parachute 13, an umbrella cabin 1a is provided inside the fuselage 11, one end of the parachute rope 12 is connected inside the umbrella cabin 1a, and the other end of the parachute rope 12 is fixedly connected to the recovery parachute 13. It further includes a throwing assembly 2, the throwing assembly 2 includes a double-arm torsion spring 21, an umbrella cover 22 and a locking member 23. The two first torsion arms 211 of the double-arm torsion spring 21 are rotatably connected to the inner bottom wall of the umbrella cabin 1a, and the two second torsion arms 212 of the double-arm torsion spring 21 are both slidably connected to the umbrella cover 22. The locking member 23 is arranged on one side of the top of the umbrella cabin 1a, and the locking member 23 is used to open or close the umbrella cover 22. When the umbrella cover 22 is closed, the recovery parachute 13 and the parachute rope 12 are in a first state of being stored in the umbrella cabin 1a, and the two first torsion arms 211 are located below the recovery parachute 13. When the umbrella cover 22 is opened, the recovery parachute 13 and the parachute rope 12 are in a second state of being thrown out of the umbrella cabin 1a.

[0026] It should be noted that the unmanned aerial vehicle is a small and medium-sized fixed-wing unmanned aerial vehicle without taxiing landing conditions. Due to its small fuselage capacity and limited load capacity, it is impossible to equip and use complex and heavy shooting parachute rockets and other high-speed parachute systems to achieve its parachute-assisted landing. Therefore, a simple and effective parachute throwing assembly needs to be arranged in the umbrella cabin.

[0027] On the basis of the above solution, in order to improve the supporting area of the recovery parachute, specifically, a plurality of support rods 213 are connected between the two first torsion arms 211, and the plurality of support rods 213 and the two first torsion arms 211 can support the recovery parachute 13 at the same time. It should be noted that when the umbrella cover 22 is closed, the double-arm torsion spring 21 stores energy. When the umbrella cover 22 is opened, the double-arm torsion spring 21 starts to release energy, which can instantly bounce the umbrella cover 22 open. At the same time, the two first torsion arms 211 and the plurality of support rods 213 can throw the recovery parachute 13 out of the umbrella cabin 1a.

[0028] In this specific embodiment, a sleeve 111 is fixedly provided on one side of the inner bottom wall of the umbrella cabin 1a. A guide rod is connected between the ends of the two first torsion arms 211, and the guide rod passes through the sleeve. It should be noted that the sleeve 111 is arranged along the width direction of the umbrella cabin 1a and is close to the side where the locking member 23 is arranged. In addition, a hanging ring 112 is fixedly provided on the inner bottom wall of the umbrella cabin 1a. One end of the parachute rope 12 is fixedly connected to the hanging ring 112. Among them, the sleeve 111 passes through the hanging ring 112, and the hanging ring 112 is located in the middle of the sleeve.

[0029] On the basis of the above solution, in order to reduce the weight of the umbrella cover 22 and ensure that the double-arm torsion spring can easily pop open the umbrella cover 22, in this specific embodiment, the umbrella cover 22 is made of a carbon fiber board or an aviation aluminum plate.

[0030] It should be noted that the locking member 23 is not limited to a specific structure, as long as it can achieve the automatic opening of the umbrella cover 22, and no other details will be elaborated here.

[0031] In this specific embodiment, the locking member 23 is an electric plug lock. A limiting hole is provided on one side of the umbrella cover 22. When the lock tongue of the electric plug lock is inserted into the limiting hole, the umbrella cover 22 can close the umbrella compartment 1a. When the lock tongue of the electric plug lock is separated from the limiting hole, the double-arm torsion spring can pop open the umbrella cover 22.

[0032] In this specific embodiment, two connecting blocks 221 are spaced apart on the umbrella cover 22, and through holes are respectively formed through the two connecting blocks 221. The two second torsion arms 212 respectively slide through the two through holes, and limiting blocks are provided at the ends of the two second torsion arms 212. When the umbrella cover 22 is opened, the two limiting blocks can respectively block corresponding to the two connecting blocks 221.

[0033] It should be noted that the two second torsion arms 212 are slidably connected to the umbrella cover 22. When the umbrella cover 22 is opened, the two limiting blocks can respectively block corresponding to the two connecting blocks 221, which can not only ensure the effective sliding and misalignment stroke between the umbrella cover 22 and the two second torsion arms 212 during rotation, but also prevent them from separating and prevent the umbrella cover 22 from being thrown off and falling off. When the umbrella cover 22 is closed, the first torsion arm 211 and the second torsion arm 212 are both located in the umbrella compartment 1a, and the axes of the first torsion arm 211 and the second torsion arm 212 are parallel.

[0034] In this specific embodiment, the width of the umbrella cover 22 is smaller than the width of the umbrella compartment 1a. When the umbrella cover 22 is opened, the other side of the umbrella cover 22 can extend into the umbrella compartment 1a, and the axes of the first torsion arm 211 and the second torsion arm 212 are parallel, which can make the opening of the umbrella compartment 1a large enough to effectively project the recovery umbrella 13 outside the umbrella compartment 1a.

[0035] In this specific embodiment, the double-arm torsion spring 21 further includes two spring coils 213, and the first torsion arm 211 and the second torsion arm 112 are integrally formed on both spring coils 213. Among them, the double-arm torsion spring 21 is made of carbon steel wire. Of course, in other embodiments, the double-arm torsion spring 21 can also be made of stainless steel wire.

[0036] For a better understanding of the present invention, the following is combined with Figures 1 to 5The technical solution of the present utility model will be described in detail: First, the recovery parachute 13 and the parachute ropes 12 need to be stored in the parachute compartment 1a. The parachute cover 22 is closed by the locking member 23, and it is ensured that the plurality of support rods 213 and the two first torsion arms 211 can support the recovery parachute 13 simultaneously. When the UAV needs to assist in landing, the parachute cover 22 is opened by the locking member 23, and the plurality of support rods 213 and the two first torsion arms 211 of the double-arm torsion spring can quickly throw the recovery parachute 13 to a safe height position outside the parachute compartment 1a.

[0037] The specific implementation manners of the present utility model described above do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A direct throwing mechanism for a recovery parachute of an unmanned aerial vehicle, the unmanned aerial vehicle comprising a body, a parachute rope and a recovery parachute, the body being provided with a parachute cabin, one end of the parachute rope being connected to the parachute cabin, and the other end of the parachute rope being fixedly connected to the recovery parachute, characterized in that: It also includes a launching assembly, which includes a double-arm torsion spring, an umbrella cover and a locking piece. The two first torsion arms of the double-arm torsion spring are rotatably connected to the inner bottom wall of the umbrella compartment, and the two second torsion arms of the double-arm torsion spring are slidably connected to the umbrella cover. The locking piece is arranged on one side of the top of the umbrella compartment, and the locking piece is used to open or close the umbrella cover. When the umbrella cover is closed, the recovery umbrella and the umbrella rope are in a first state of being stored in the umbrella compartment, and the two first torsion arms are located below the recovery umbrella. When the umbrella cover is opened, the recovery umbrella and the umbrella rope are in a second state of being launched out of the umbrella compartment.

2. The direct throwing mechanism for a recovery parachute of a drone according to claim 1, characterized in that: A plurality of support rods are connected between the two first torsion arms of the two double-arm torsion springs.

3. The direct throwing mechanism for a recovery parachute of a drone according to claim 2, characterized in that: A sleeve is fixedly provided on one side of the inner bottom wall of the parachute cabin, a guide rod is connected between the ends of the two first torsion arms, and the guide rod is passed through the sleeve.

4. The direct throwing mechanism for a recovery parachute of a drone according to claim 3, characterized in that: A hanging ring is fixedly provided on the inner bottom wall of the parachute compartment, and one end of the parachute rope is fixedly connected to the hanging ring.

5. The direct throwing mechanism for a recovery parachute of a drone according to claim 1, characterized in that: The locking member is an electric latch, and a limiting hole is provided on one side of the umbrella cover, and a lock tongue of the electric latch can be inserted into the limiting hole.

6. The direct throwing mechanism for a recovery parachute of a drone according to claim 1, characterized in that: Two connecting blocks are arranged on the umbrella cover at intervals, and through holes are penetrated in the two connecting blocks. The two second torsion arms are respectively slidably arranged in the two through holes, and the ends of the two second torsion arms are respectively provided with limit blocks. When the umbrella cover is opened, the two limit blocks can respectively block with the two connecting blocks.

7. The direct throwing mechanism for a recovery parachute of a drone according to claim 5, characterized in that: The width of the umbrella cover is smaller than the width of the umbrella cabin. When the umbrella cover is opened, the other side of the umbrella cover can extend into the umbrella cabin, and the axes of the first torsion arm and the second torsion arm are parallel.

8. The direct throwing mechanism for a recovery parachute of a drone according to claim 1, characterized in that: The double-arm torsion spring also includes two spring coils, and the two spring coils are integrally formed with a first torsion arm and a second torsion arm.

9. The direct throwing mechanism for a recovery parachute of a drone according to claim 1, characterized in that: The umbrella cover is made of a carbon fiber plate or an aviation aluminum plate.

10. The direct throwing mechanism for a recovery parachute of a drone according to claim 1, characterized in that: The double-arm torsion spring is made of carbon steel wire or stainless steel wire.

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