Device for releasing life raft at extreme low altitude by unmanned aerial vehicle

Abstract

The utility model discloses a device for launching a life raft at an extreme low altitude for a ton-level vertical unmanned aerial vehicle, a life raft floating tire is filled with gas, the life raft floating tire is fixed among a plurality of groups of fixing frames after a life raft tent is folded, the top end fixing frame is arranged on the belly of the unmanned aerial vehicle, and the plurality of groups of fixing frames are matched and layered in design. Each layer of fixing frame is provided with a through hole to be hinged with the lower layer of fixing frame, each layer of fixing frame is provided with a fixing clamp, the top end of the tent is provided with a fixing rope, and the fixing rope is provided with a rope knot to be fixed with the fixing clamp. Telescopic rods and connecting rods are arranged between the two layers of fixing frames, the connecting rods are hinged to the telescopic rods, and the connecting rods are hinged to the fixing frames. During throwing, the telescopic rod installed on the fixing frame is matched with the connecting rod, the telescopic rod extends to pull up the connecting rod to lift the fixing frame, the life raft falls down, the life raft is hung below the fixing clamp through the fixing rope, after the life raft reaches the proper height, the fixing clamp is opened, the fixing rope is put down, the life raft is thrown down, and throwing is completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of unmanned aerial vehicles, and specifically relates to an application in the field of airdrop rescue. Background Art

[0002] In the event of a flood or a maritime rescue, when the trapped people cannot be rescued immediately, a life raft can float on the water surface. The life raft can carry a certain amount of survival supplies and provide physical protection for the affected population, which can greatly increase the survival rate of the affected people. However, how to accurately drop the life raft to the nearest point of the affected people has always been a difficult problem. The existing airdrop life raft technology requires a special airdrop platform to use a parachute for high-altitude airdrop. Limited by the size and weight of the airdrop platform, it can only be airdropped by a transport plane, which cannot meet the requirements of fast and accurate delivery, and the rescue cost is high. Summary of the Utility Model

[0003] The utility model provides a device for accurately, quickly and low-costly dropping a life raft.

[0004] With the rise of the ton-class unmanned aerial vehicle industry, the application scenarios of unmanned aerial vehicles have emerged in various occasions. Due to its advantages of simple structure, low cost, high safety and flexible application scenarios, unmanned aerial vehicles will surely play an important role in the rescue field. Especially for the ton-class unmanned aerial vehicle that can take off and land vertically, its flight and hovering heights are flexibly controllable, and it will shine in the airdrop field.

[0005] The advantage of using a ton-class vertical takeoff and landing unmanned aerial vehicle for low-altitude airdrop compared with other aircraft is that it can hover at ultra-low altitude, and the airdropped supplies do not need to use a parachute. Different from the traditional airdrop, the utility model uses a ton-class vertical takeoff and landing unmanned aerial vehicle to hover at ultra-low altitude for airdrop.

[0006] The technical solution adopted by the present utility model is as follows: A device for a drone to release a life raft at ultra-low altitude, which includes a release rack and a life raft. The release rack is designed in layers, with one life raft placed on each layer. Before placing the life raft on each layer of the fixed rack, the floating tire of the life raft needs to be filled with gas. The release rack is composed of fixed racks, which can be single-layer or multi-layer, and the release rack is fixed on the belly of the drone. The release rack mainly includes: fixed racks, telescopic rods, connecting rods, fixed ropes, and fixed clips. The fixed racks fix the life raft, and there are at least three or more groups of fixed racks on each layer. Telescopic rods and connecting rods are arranged on the outside of the fixed racks. The fixed racks are installed with telescopic rods. One end of the telescopic rod and the connecting rod are hinged, and the other end of the connecting rod is hinged to the fixed rack. The telescopic rod can be remotely controlled to expand and contract. The expansion and contraction of the telescopic rod pull the connecting rod to move, so as to lift or lower the fixed rack, and realize fixing or releasing the life raft. The top of the life raft tent is connected to the fixed rope. Both ends of the fixed rope are provided with knots, and the knots are connected to the fixed clips. The fixed rope is fixed or released by closing or opening the fixed clips. After the fixed rack is lifted and the life raft leaves the fixed rack, the life raft is suspended and lifted by the fixed rope. After the drone hovers at a certain height above the water surface or the ground, the fixed clip is opened to release the life raft, and the release is completed.

[0007] The advantages and beneficial effects of the present utility model: The structure is simple, the number of fixed racks can be adjusted according to the number of life rafts, the fixed racks can be set in multiple layers, the use cost is reduced, the hovering height of the drone is flexible, it can be released at ultra-low altitude, and the release position is accurate. Description of the Drawings

[0008] Figure 1 is the structural schematic diagram of the present utility model;

[0009] Figure 2 is the structural schematic diagram during the release of the present utility model;

[0010] Figure 3 is the enlarged view of part A of the present utility model;

[0011] Figure 4 is the enlarged top view of part B of the present utility model.

[0012] Wherein 1 - fixed rack, 2 - fixed clip, 3 - fixed rope, 4 - telescopic rod, 5 - connecting rod, 6 - floating tire, 7 - tent, 8 - first through hole, 9 - second through hole, 10 - inner clip, 11 - outer clip, 12 - spring, 13 - electromagnetic chuck, 14 - magnet. Detailed Implementation Modes

[0013] The following further detailed description of the present utility model is made through specific implementation modes:

[0014] Before the life raft is loaded into the fixing rack 1, the floating tire 6 of the life raft is filled with gas, and rescue supplies such as drinking water, food, medicine, and positioning instruments are placed inside the raft. The life raft tent 7 is folded, and the life raft is placed in each layer of the fixing rack 1. The top end of the tent 7 at the top layer is connected to the fixing clip 2, and the life raft tents 7 at other layers are connected to the fixing ropes 3. Both ends of the fixing rope 3 are provided with knots and are connected to the fixing clip 2. The fixing rack 1 can be a single-layer or multi-layer structure, and the number of each layer of the fixing rack 1 can be set according to the shape of the floating tire 6 of the life raft. Each layer of the fixing rack 1 is at least three groups or more than three groups, so that the fixing rack 1 can stably fix the floating tire 6 of the life raft. The fixing rack 1 is in an "L" shape, a fixing plate with a first through hole 8 is arranged at the upper end of the fixing rack 1, and a second through hole 9 is arranged at the bent part of the "L" shaped fixing rack 1. The first through hole 8 and the second through hole 9 between adjacent two layers of the fixing racks 1 are hinged. An expansion rod 4 is installed on the upper fixing rack 1, the expansion rod 4 is hinged to the connecting rod 5, and the connecting rod 5 is hinged to the lower fixing rack 1. The fixing rack 1 is provided with a fixing clip 2, a spring fixing component is arranged on the fixing rack 1, a spring 12 is installed on the spring fixing component, the spring 12 is respectively connected to the inner clip 10 and the outer clip 11, the inner clip 10 and the outer clip 11 are hingedly fixed on the fixing rack 1, a magnet 14 is installed on the inner clip 10, an electromagnetic chuck 13 is installed on the outer clip 11, a baffle is arranged on the outer clip 11, and the outer clip 11 can block the inner clip 10 to prevent the fixing clip 2 from being opened due to the pulling force of the fixing rope 3.

[0015] Specific dropping action: After the unmanned aerial vehicle reaches the dropping point and hovers at an appropriate height, the expansion rod 4 extends to pull the connecting rod 5 to lift the fixing rack 1. After the fixing rack 1 is lifted to a certain angle, the life raft detaches from the fixing rack 1, the fixing rope 3 hoists the life raft, the magnetic pole of the electromagnetic chuck 13 in the fixing clip 2 is swapped, and the repulsive force with the magnet 14 causes the inner clip 10 and the outer clip 11 to separate. The inner clip 10 and the outer clip 11 receive the elastic force of the spring 12 to open the fixing clip 2, the fixing rope 3 is lowered, and the life raft is dropped.

Claims

1. An apparatus for low-altitude dropping of a life raft by an unmanned aerial vehicle, characterized in that, It includes a delivery rack and a life raft. The delivery rack is designed in layers, with a life raft placed on each layer. The delivery rack is composed of fixed frames, which are fixed on the belly of the drone. There are through holes on each layer of fixed frames and they are hinge-connected to the lower-layer fixed frames. There are fixed clips on each layer of fixed frames, and there are telescopic rods and connecting rods between two layers of fixed frames. There is a fixing rope at the top of the life raft tent, which is fixed to the fixed clip.

2. The device for a drone to drop a life raft at ultra-low altitude according to claim 1, characterized in that, The fixed frame is "L"-shaped. There are telescopic rods and connecting rods on the fixed frame, and there are through holes on the fixed frame, and additional fixed frames can be added.

3. The device for a drone to drop a life raft at ultra-low altitude according to claim 1, characterized in that, The inner clip and the outer clip of the fixed clip are connected by a spring. The inner clip and the outer clip are hinge-mounted on the fixed frame. A magnet is installed on the inner clip of the fixed clip, an electromagnetic chuck is installed on the outer clip, and a baffle is provided on the outer clip.

4. The device for a drone to drop a life raft at ultra-low altitude according to claim 1, characterized in that, The top of the life raft tent is connected with a fixing rope, and there are knots at both ends of the fixing rope, which are fixed to the fixed clip.

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