Switching type flight lifesaving device

Abstract

The invention belongs to the technical field of rescue unmanned aerial vehicles, and particularly relates to a switching type flight lifesaving device which comprises an unmanned aerial vehicle body, a mounting part is arranged in the unmanned aerial vehicle body, and the mounting part is electrically connected with the interior of the unmanned aerial vehicle body; a plurality of ejection parts are annularly arranged in the mounting part; a locking part is arranged in the unmanned aerial vehicle main body, and the locking part can fix the mounting part and stabilize the mounting part in the unmanned aerial vehicle main body; the ejection part comprises a fixing part, an elastic extrusion part, an ejection bin, a connecting base, a fixing base, an elastic reset part and a connecting rope, the middle of the fixing part is rotationally arranged in the mounting part, one end of the elastic extrusion part is fixedly connected with the lower end of the fixing part, and the other end of the elastic extrusion part is fixedly connected with the mounting part. Multi-angle lifesaving material delivery is achieved through the annular array ejection structure, rapid function switching is supported by the modular installation part, the rescue range, task flexibility and equipment stability are remarkably improved, and complex emergency rescue requirements are met.

Description

Technical Field

[0001] The present invention belongs to the technical field of rescue drones, and particularly relates to a switching flight rescue device. Background Art

[0002] Currently, the drone rescue technology faces common problems such as limited rescue range, single function, and insufficient equipment stability. Traditional drone rescue devices mostly adopt fixed ejection structures or single-module designs, and their ejection angles and forces are difficult to dynamically adjust, resulting in a small coverage radius of rescue supplies and being unable to meet the rescue needs in complex environments (such as fast-flowing waters or moving targets). In the prior art, mechanical locking mechanisms rely on single buckles or electromagnetic adsorption, which are prone to failure under strong vibrations or extreme climates, and there are risks of mis-triggering or module detachment; at the same time, the replacement of functional modules requires the disassembly of the whole machine components, which is time-consuming and laborious, and it is difficult to achieve rapid switching of multiple tasks. Based on the actual situation, a solution with multi-dimensional ejection capabilities, modular rapid adaptation, and multiple safety guarantees is needed to improve the reliability and scenario adaptability of drones in emergency rescue. Summary of the Invention

[0003] The purpose of the present invention is to provide a switching flight rescue device, which can achieve multi-angle rescue supply delivery through an annular array ejection structure, and the modular installation part supports rapid function switching, significantly improving the rescue range, task flexibility, and equipment stability, and adapting to complex emergency rescue needs.

[0004] The technical solutions adopted by the present invention are specifically as follows:

[0005] A switching flight rescue device includes a drone main body, and an installation part is arranged inside the drone main body, and the installation part is electrically connected to the inside of the drone main body;

[0006] A plurality of ejection parts are annularly arranged inside the installation part;

[0007] A locking part is arranged inside the drone main body, and the locking part can fix the installation part stably inside the drone main body;

[0008] The ejection part includes a fixing piece, an elastic extrusion piece, an ejection chamber, a connecting seat, a fixing seat, an elastic reset piece, and a connecting rope. The middle part of the fixing piece is rotatably arranged inside the installation part. One end of the elastic extrusion piece is fixedly connected to the lower end of the fixing piece, and the other end of the elastic extrusion piece is fixedly connected to the installation part. The ejection chamber is arranged inside the installation part. The connecting seat is arranged inside the ejection chamber. The fixing seat is threadedly connected to the connecting seat. The elastic reset piece is arranged between the fixing seat and the installation seat, and both ends of the elastic reset piece are fixedly connected to the fixing seat and the installation seat respectively. One end of the connecting rope is fixedly connected to the inside of the ejection chamber, and the other end of the connecting rope is fixedly connected to the connecting seat.

[0009] In a preferred embodiment, the installation part includes an installation base, a driving motor, a rotating screw, an extrusion disc and a floating bin. The installation base is arranged inside the UAV body. The driving motor is inside the installation base. The rotating screw is fixedly connected to the output end of the driving motor. The inside of the extrusion disc is threadedly connected to the outer edge of the rotating screw. The upper end of the floating bin is fixedly connected to the installation base by bolts.

[0010] In a preferred embodiment, the locking part includes a locking block, an elastic restoring member and a pull rod. The locking block is slidably arranged inside the UAV body. The elastic restoring member is arranged between the locking block and the UAV body. The pull rod is fixedly connected to the middle of the locking block.

[0011] In a preferred embodiment, an annular fixing groove is formed on the outer edge of the ejection bin, and the upper end of the fixing member is matched with the inside of the fixing groove.

[0012] In a preferred embodiment, the upper end of the fixing member is provided with an inclined surface, which is matched with the lower end of the ejection bin. A plurality of extrusion beams are arranged on the outer edge of the extrusion disc, and the extrusion beams are in contact with the lower end of the fixing member.

[0013] In a preferred embodiment, the connecting rope is coiled and stacked in multiple turns inside the ejection bin.

[0014] In a preferred embodiment, the ejection bins are arranged obliquely inside the installation base.

[0015] In a preferred embodiment, the upper end of the connecting seat is polygonal, and a magnet is arranged inside the upper end of the connecting seat. The magnet is adsorbed to the inside of the ejection bin.

[0016] In a preferred embodiment, a locking groove is formed on the outer edge of the installation base, and the locking groove is matched with the locking block.

[0017] In a preferred embodiment, a plurality of positioning lights are fixedly arranged on both the upper and lower surfaces of the UAV body, and the positioning lights are protruded.

[0018] The technical effects achieved by the present invention are as follows:

[0019] The present invention adopts the design of the installation part. Through multiple ejection parts arranged annularly inside the installation part and in cooperation with the energy storage and release mechanism of the elastic reset member, the multi-angle synchronous ejection of rescue supplies is realized. The inclined arrangement structure of the ejection bins and the coiled and stacked design of the connecting ropes enable the ejection bins to quickly pop out and deploy the rescue ropes along the preset trajectory after being unlocked from the fixing members, significantly improving the rescue coverage range;

[0020] The present invention adopts the design of a locking part. Through the cooperation of the elastic restoring member of the locking part and the locking groove of the mounting seat, the overall rapid disassembly and assembly of the mounting part are realized. Combined with the standardized electrical interface inside the UAV body, it can be compatible with carrying a floating bin or other rescue modules to meet the rapid switching requirements of multiple scenarios such as water surface rescue and material delivery.

[0021] The present invention adopts the design of an ejection bin. Through the inclined plane self-locking structure of the fixing part and the annular fixing groove of the ejection bin, a mechanical lock is formed: when the ejection bin is installed in the mounting seat, its lower end presses the inclined plane of the fixing part, forcing the fixing part to rotate and contract around the axis. After the ejection bin is in place, the elastic extrusion member pushes the fixing part to reset and snap into the fixing groove to achieve rigid locking. At the same time, the connecting seat is adsorbed to the inside of the ejection bin through the built-in magnet to form a second magnetic adsorption auxiliary fixation to prevent the ejection bin from accidentally detaching from the inside of the mounting seat and the connecting seat when it is not installed. Description of the Drawings

[0022] Figure 1 is the overall schematic diagram of the embodiment of the present invention;

[0023] Figure 2 is the schematic diagram of the mounting part of the embodiment of the present invention removed from the UAV body;

[0024] Figure 3 is the schematic diagram of the mounting part of the embodiment of the present invention;

[0025] Figure 4 is the schematic diagram of the locking part of the embodiment of the present invention;

[0026] Figure 5 is the exploded view of the mounting part of the embodiment of the present invention;

[0027] Figure 6 is the overall side cross-sectional view of the embodiment of the present invention;

[0028] Figure 7 is the embodiment of the present invention Figure 6 schematic diagram at position A in;

[0029] Figure 8 is the schematic diagram of the ejection bin of the embodiment of the present invention.

[0030] In the drawings, the list of components represented by each reference numeral is as follows:

[0031] 1, UAV body; 2, mounting part; 201, mounting seat; 202, driving motor; 203, rotating screw; 204, extrusion disc; 205, floating bin; 3, ejection part; 301, fixing part; 302, elastic extrusion member; 303, ejection bin; 304, connecting seat; 305, fixing seat; 306, elastic restoring member; 307, connecting rope; 4, locking part; 401, locking block; 402, elastic restoring member; 403, pull rod. Detailed Implementation Modes

[0032] To make the above objectives, features, and advantages of the present invention more obvious and understandable, the following provides a detailed description of the specific implementation modes of the present invention in conjunction with the accompanying drawings of the specification.

[0033] In the following description, many specific details are set forth to facilitate a thorough understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0034] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation mode of the present invention. The phrase "in a preferred implementation mode" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that mutually excludes other embodiments.

[0035] Furthermore, the present invention is described in detail in conjunction with schematic diagrams. When elaborating on the embodiments of the present invention, for the sake of clarity, the cross-sectional views showing the device structure are locally enlarged out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0036] Please refer to Figures 1 to 8 As shown, the present invention provides a switching type flight rescue device, including a drone main body 1. An installation part 2 is arranged inside the drone main body 1, and the installation part 2 is electrically connected to the inside of the drone main body 1;

[0037] A plurality of ejection parts 3 are arranged in a ring shape inside the installation part 2;

[0038] A locking part 4 is arranged inside the drone main body 1, and the locking part 4 can fix the installation part 2 stably inside the drone main body 1;

[0039] The ejection part 3 includes a fixing member 301, an elastic extrusion member 302, an ejection bin 303, a connecting seat 304, a fixing seat 305, an elastic reset member 306 and a connecting rope 307. The middle part of the fixing member 301 is rotatably arranged inside the installation part 2. One end of the elastic extrusion member 302 is fixedly connected to the lower end of the fixing member 301, and the other end of the elastic extrusion member 302 is fixedly connected to the installation part 2. The ejection bin 303 is arranged inside the installation part 2. The connecting seat 304 is arranged inside the ejection bin 303. The fixing seat 305 is threadedly connected to the connecting seat 304. The elastic reset member 306 is arranged between the fixing seat 305 and the installation seat 201, and both ends of the elastic reset member 306 are fixedly connected to the fixing seat 305 and the installation seat 201 respectively. One end of the connecting rope 307 is fixedly connected to the inside of the ejection bin 303, and the other end of the connecting rope 307 is fixedly connected to the connecting seat 304.

[0040] Specifically, after the installation part 2 is installed, the locking part 4 fixes the installation part 2 inside the UAV body 1. Then, when the UAV body 1 flies to the rescue position and lands beside the rescuer, the UAV body 1 controls the installation part 2 to squeeze the ejection part 3, so that the ejection part 3 enters the ejection state. When the installation part 2 squeezes the fixing member 301, the fixing member 301 contracts and enters the inside of the installation part 2. At this time, the fixing member 301 releases the locking of the ejection bin 303. At this time, the elastic reset member 306 releases the elastic pressure to drive the connecting seat 304 and the ejection bin 303 to slide inside the installation part 2. Since the connecting seat 304 is fixedly connected to the fixing seat 305, the ejection bin 303 is affected by the elastic force and disengages from the inside of the installation part 2. Thus, the automatic ejection of the ejection bin 303 is realized.

[0041] After the ejection bin 303 is ejected from the inside of the installation part 2, since both ends of the connecting rope 307 are connected to the ejection bin 303 and the connecting seat 304 respectively, the connecting rope 307 inside the ejection bin 303 is pulled out as the ejection bin 303 moves. The ejection bin 303 drives the connecting rope 307 to be ejected together, which can increase the effective rescue range of the device and increase the contact opportunity between the rescue target and the device, thereby further improving the rescue success rate.

[0042] After the rescue mission is completed, simply rotate the connecting seat 304 so that the connecting seat 304 is separated from the fixed seat 305. Then, the untriggered ejection chamber 303 is installed inside the installation part 2. The installation of the ejection chamber 303 can squeeze the fixed seat 305 and push the elastic reset member 306 to contract into the installation part 2, enabling the elastic reset member 306 to enter the energy storage state. Then, rotate the ejection chamber 303 so that the connecting seat 304 inside the ejection chamber 303 rotates at the fixed seat 305 until the lower end of the connecting seat 304 is screwed into the fixed seat 305. At this time, the new ejection chamber 303 is installed inside the installation part 2. The fixing member 301 is squeezed by the elastic pressing member 302, causing the upper end of the fixing member 301 to extend out of the installation part 2 again. The upper end of the fixing member 301 is reinserted into the outer edge of the ejection chamber 303, fixing the ejection chamber 303 inside the installation part 2 and realizing the convenient fixing of the ejection chamber 303 inside the installation part 2;

[0043] It should be noted that when different rescue missions need to be carried out, the locking part 4 can be unlocked, and then the entire installation part 2 can be removed from the inside of the UAV body 1. The corresponding rescue components are inserted into the inside of the UAV body 1 and automatically fixed by the locking part 4. Different life-saving components can be replaced through the installation interface inside the UAV body 1, and the switching of the life-saving method can be realized through the replacement of different components.

[0044] At the same time, a large number of cavities are provided inside the UAV body 1 to further enhance the buoyancy of the life-saving device on the water, enabling the UAV body 1 to float on the water as a floating life buoy even without loading life-saving components, further realizing the flexibility of the life-saving device to participate in the rescue.

[0045] Please refer to Figure 5 As shown in the figure, the installation part 2 includes an installation seat 201, a driving motor 202, a rotating screw 203, a pressing disc 204, and a floating chamber 205. The installation seat 201 is arranged inside the UAV body 1. The driving motor 202 is inside the installation seat 201. The rotating screw 203 is fixedly connected to the output end of the driving motor 202. The inside of the pressing disc 204 is threadedly connected to the outer edge of the rotating screw 203. The upper end of the floating chamber 205 is fixedly connected to the installation seat 201 by bolts. The floating chamber 205 can provide additional buoyancy for the whole device, thus fully ensuring;

[0046] An annular handle is also fixedly arranged on the upper part of the installation seat 201. Through the annular handle, the rescued person can quickly grab the annular handle from all directions after contacting the device, providing a convenient grasping support point for the rescued person and further improving the rescue success rate.

[0047] The outer edge of the mounting base 201 is matched with the mounting interface inside the UAV body 1, which provides limit and guidance for the mounting base 201 to be mounted into the inside of the UAV body 1 through the mounting interface, and can also improve the stability of the mounting base 201 after being mounted into the inside of the UAV body 1.

[0048] The driving motor 202 is electrically connected to the control unit inside the UAV body 1 through a cable. Through the driving of the driving motor 202 by the UAV body 1, the output end of the driving motor 202 drives the rotating screw 203 to rotate. The rotation of the rotating screw 203 can drive the extrusion disc 204 connected by threads to move vertically inside the mounting base 201.

[0049] When the extrusion disc 204 moves downward, the extrusion disc 204 can extrude the corresponding fixing member 301, so that the fixing member 301 rotates and contracts into the inside of the mounting base 201 with the middle part as the axis, thereby realizing the unlocking state of the fixing member 301 for the ejection chamber 303.

[0050] When the extrusion disc 204 moves upward, the extrusion disc 204 gradually loses the extrusion on the fixing member 301, so that the fixing member 301 is elastically extruded by the elastic extrusion member 302. The fixing member 301 rotates and extends out of the inside of the mounting base 201 with the middle part as the axis, and can be stuck on the outer edge of the ejection chamber 303 to realize the fixation of the ejection chamber 303, avoid the accidental launch of the ejection chamber 303, and ensure the stability during the installation of the ejection chamber 303.

[0051] Please refer to Figure 4 As shown, the locking part 4 includes a locking block 401, an elastic restoring member 402 and a pull rod 403. The locking block 401 is slidably arranged inside the UAV body 1. The elastic restoring member 402 is arranged between the locking block 401 and the UAV body 1. The pull rod 403 is fixedly connected to the middle part of the locking block 401.

[0052] When the mounting part 2 is mounted into the inside of the UAV body 1, the mounting base 201 can extrude the locking block 401, so that the locking block 401 contracts into the inside of the UAV body 1 until the mounting base 201 is completely mounted into the inside of the UAV body 1. At this time, the locking block 401 loses the limit of the UAV body 1, and the locking block 401 is extruded by the elastic restoring member 402 and extends out of the inside of the UAV body 1 and is stuck into the inside of the mounting base 201, thereby realizing the extrusion limit fixation of the mounting base 201.

[0053] When it is necessary to release the limit fixation of the locking block 401 on the mounting base 201, it is necessary to pull the locking block 401 through the pull rod 403, so that the locking block 401 contracts into the inside of the UAV body 1 again, and the limit of the locking block 401 on the mounting base 201 can be realized, thereby realizing the convenient installation and disassembly of the mounting base 201 inside the UAV body 1.

[0054] Please refer to Figures 5 to 8 As shown, an annular fixing groove is formed on the outer edge of the ejection chamber 303. The interior of the fixing groove is fitted with the upper end of the fixing member 301. Through the annular fixing groove, after the ejection chamber 303 is installed into the interior of the mounting seat 201 at any angle, the fixing groove can always correspond to the fixing member 301, enabling the fixing member 301 to be snapped into the interior of the fixing groove. At the same time, when the ejection chamber 303 carries the connecting seat 304 and rotates and screws into the interior of the fixing seat 305, the fixing member 301 can still remain in the fixing groove to fix the ejection chamber 303, thereby improving the convenience and stability when the ejection chamber 303 is reloaded.

[0055] Please refer to Figure 7 As shown, the upper end of the fixing member 301 is provided with an inclined surface, which is fitted with the lower end of the ejection chamber 303. When the ejection chamber 303 is installed into the interior of the mounting seat 201, the lower end of the ejection chamber 303 can squeeze the inclined surface at the upper end of the fixing member 301, causing the fixing member 301 to contract into the interior of the mounting seat 201 until the fixing groove at the ejection chamber 303 moves to the position of the fixing member 301. At this time, the ejection chamber 303 does not squeeze the upper end of the fixing member 301, causing the lower end of the fixing member 301 to rotate under the extrusion of the elastic extrusion member 302, and the upper end of the fixing member 301 is snapped into the interior of the fixing groove;

[0056] Through the cooperation between the upper end of the fixing member 301 and the lower end of the ejection chamber 303, the automatic locking during the installation of the ejection chamber 303 can be further achieved.

[0057] Please refer to Figure 5 As shown, a plurality of extrusion beams are provided on the outer edge of the extrusion disk 204. The extrusion beams are in contact with the lower end of the fixing member 301. By sliding the extrusion disk 204, the extrusion beams can be driven to slide in the vertical direction, and the vertical movement of the extrusion beams can squeeze the lower end of the fixing member 301, causing the lower end of the fixing member 301 to rotate.

[0058] Please refer to Figures 6 to 8 As shown, the connecting rope 307 is coiled and stacked in multiple turns inside the ejection chamber 303. By coiling in multiple turns, the connecting rope 307 is realized. In the limited space of the ejection chamber 303, a longer connecting rope 307 can be accommodated, ensuring that the ejection chamber 303 can continuously release the connecting rope 307 during the ejection flight process. Through the ejection of the ejection chamber 303 and the connecting rope 307, the rescue area of the device can be effectively increased, enabling the rescue target to more conveniently grab the rescue device, thereby improving the rescue rate.

[0059] Please refer to Figure 6 and Figure 7As shown, the ejection chambers 303 are arranged in an inclined state inside the mounting base 201. Through the inclined installation of the ejection chambers 303, the ejection chambers 303 can be ejected and fly out in an inclined state, enabling the ejection chambers 303 to fly a longer distance.

[0060] Please refer to Figure 8 As shown, a magnet is provided inside the upper end of the connecting seat 304. The magnet adsorbs to the inside of the ejection chamber 303. The adsorption force of the magnet is less than the impact force received by the ejection chamber 303 during ejection, so that the connecting seat 304 and the inside of the ejection chamber 303 can form a whole when adsorbed. Combining into a whole can facilitate the installation of the ejection chamber 303 into the inside of the mounting base 201, further improving the installation convenience;

[0061] When the ejection chamber 303 enters the ejection state, due to the impact force during ejection, the connecting seat 304 is separated from the ejection chamber 303.

[0062] Please refer to Figure 8 As shown, the upper end of the connecting seat 304 is set to be polygonal. After the upper end of the connecting seat 304 is connected to the ejection chamber 303 through a magnet, by rotating the ejection chamber 303, the connecting seat 304 can be driven to rotate together. Through the volume-structural limit, it can be avoided that the connecting seat 304 rotates inside the ejection chamber 303 when the connecting seat 304 is threadedly connected to the fixed seat 305, ensuring the threaded connection between the connecting seat 304 and the fixed seat 305.

[0063] Please refer to Figure 1 、 Figure 2 and Figure 4 As shown, a plurality of positioning lights are fixedly arranged on both the upper and lower surfaces of the UAV body 1. The positioning lights are arranged in a protruding shape. When the UAV body 1 performs a rescue mission, a flashing signal is emitted through the positioning lights, providing positioning for the UAV body 1, facilitating the rescued and the operator to distinguish the position of the UAV body 1, facilitating the operator to better land the UAV body 1 in the rescue area, and at the same time being able to give psychological comfort to the rescued to better cope with the situation.

[0064] The working principle of the present invention is as follows: After the installation part 2 is installed, the locking part 4 fixes the installation part 2 inside the drone body 1. Then, when the drone body 1 flies to the rescue position and lands beside the rescuer, the drone body 1 controls the installation part 2 to squeeze the ejection part 3, causing the ejection part 3 to enter the ejection state. When the installation part 2 squeezes the fixing part 301, the fixing part 301 contracts into the interior of the installation part 2. At this time, the fixing part 301 releases the lock on the ejection chamber 303. Then, the elastic reset part 306 releases the elastic pressure to drive the connecting seat 304 and the ejection chamber 303 to slide inside the installation part 2. Since the connecting seat 304 is fixedly connected to the fixed seat 305, the ejection chamber 303 is affected by the elastic force and disengages from the interior of the installation part 2, thus realizing the automatic ejection of the ejection chamber 303.

[0065] After the ejection chamber 303 is ejected from the interior of the installation part 2, since the two ends of the connecting rope 307 are respectively connected to the ejection chamber 303 and the connecting seat 304, the connecting rope 307 inside the ejection chamber 303 is pulled out as the ejection chamber 303 moves. The ejection chamber 303 drives the connecting rope 307 to be ejected together, which can increase the effective rescue range of the device and increase the contact opportunity between the rescue target and the device, thereby further improving the rescue success rate.

[0066] After the rescue mission is completed, simply rotate the connecting seat 304 to separate the connecting seat 304 from the fixed seat 305. Then, install the untriggered ejection chamber 303 into the interior of the installation part 2. The installation of the ejection chamber 303 can squeeze the fixed seat 305 to push the elastic reset part 306 to contract into the interior of the installation part 2, causing the elastic reset part 306 to enter the energy storage state. Then, rotate the ejection chamber 303 so that the connecting seat 304 inside the ejection chamber 303 rotates at the fixed seat 305 until the lower end of the connecting seat 304 is screwed into the interior of the fixed seat 305. At this time, the new ejection chamber 303 is installed into the interior of the installation part 2. The fixing part 301 is squeezed by the elastic pressing part 302, causing the upper end of the fixing part 301 to extend out of the interior of the installation part 2 again. The upper end of the fixing part 301 is reinserted into the outer edge of the ejection chamber 303, fixing the ejection chamber 303 inside the installation part 2 and realizing the convenient fixation of the ejection chamber 303 inside the installation part 2.

[0067] When different rescue tasks need to be performed, the locking part 4 can be unlocked, and then the entire installation part 2 can be removed from the interior of the drone body 1. The corresponding rescue components are inserted into the interior of the drone body 1 and automatically fixed by the locking part 4. Different life-saving components can be replaced through the installation interface inside the drone body 1, and the rescue method can be switched by replacing different components.

[0068] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented by conventional means in the art without special explanation and limitation.

Claims

1. A switching type flight rescue device, characterized in that: It includes a drone body (1), and an installation part (2) is arranged inside the drone body (1), and the installation part (2) is electrically connected to the inside of the drone body (1); A plurality of ejection parts (3) are annularly arranged inside the installation part (2); A locking part (4) is arranged inside the drone body (1), and the locking part (4) can fix the installation part (2) stably inside the drone body (1); The ejection part (3) includes a fixing piece (301), an elastic extrusion piece (302), an ejection chamber (303), a connecting seat (304), a fixing seat (305), an elastic reset piece (306) and a connecting rope (307). The middle part of the fixing piece (301) is rotatably arranged inside the installation part (2). One end of the elastic extrusion piece (302) is fixedly connected to the lower end of the fixing piece (301), and the other end of the elastic extrusion piece (302) is fixedly connected to the installation part (2). The ejection chamber (303) is arranged inside the installation part (2). The connecting seat (304) is arranged inside the ejection chamber (303). The fixing seat (305) is threadedly connected to the connecting seat (304). The elastic reset piece (306) is arranged between the fixing seat (305) and the installation seat (201), and both ends of the elastic reset piece (306) are fixedly connected to the fixing seat (305) and the installation seat (201) respectively. One end of the connecting rope (307) is fixedly connected to the inside of the ejection chamber (303), and the other end of the connecting rope (307) is fixedly connected to the connecting seat (304).

2. The switchable flight rescue device according to claim 1, characterized in that: The installation part (2) includes an installation seat (201), a driving motor (202), a rotating screw (203), a pressing disc (204) and a floating chamber (205). The installation seat (201) is arranged inside the drone body (1). The driving motor (202) is inside the installation seat (201). The rotating screw (203) is fixedly connected to the output end of the driving motor (202). The inside of the pressing disc (204) is threadedly connected to the outer edge of the rotating screw (203). A plurality of pressing beams are arranged on the outer edge of the pressing disc (204), and the pressing beams are in contact with the lower end of the fixing piece (301). The upper end of the floating chamber (205) is fixedly connected to the installation seat (201) by bolts.

3. The switching type flight rescue device according to claim 1, wherein: The locking part (4) includes a locking block (401), an elastic recovery piece (402) and a pull rod (403). The locking block (401) is slidably arranged inside the drone body (1). The elastic recovery piece (402) is arranged between the locking block (401) and the drone body (1). The pull rod (403) is fixedly connected to the middle part of the locking block (401).

4. A switching type flight rescue device according to claim 1, characterized in that: An annular fixing groove is formed on the outer edge of the ejection chamber (303), and the inside of the fixing groove is matched with the upper end of the fixing piece (301).

5. The switching type flight rescue device according to claim 1, characterized in that: The upper end of the fixing piece (301) is set as an inclined surface, and the inclined surface is matched with the lower end of the ejection chamber (303).

6. The switching type flight rescue device according to claim 1, characterized in that: The connecting rope (307) is coiled and stacked in multiple circles inside the ejection chamber (303).

7. A switching type flight rescue device according to claim 1, characterized in that: The ejection chambers (303) are arranged in an inclined manner inside the mounting base (201).

8. A switching type flight rescue device according to claim 1, characterized in that: The upper end of the connecting base (304) is set to be polygonal, and a magnet is arranged inside the upper end of the connecting base (304), and the magnet is adsorbed to the inside of the ejection chamber (303).

9. The switching type flight rescue device according to claim 2, characterized in that: A locking groove is formed on the outer edge of the mounting base (201), and the locking groove is matched with the locking block (401).

10. The switching type flight rescue device according to claim 1, characterized in that: A plurality of positioning lights are fixedly arranged on both the upper surface and the lower surface of the UAV body (1), and the positioning lights are arranged in a protruding manner.

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