Heavy lifting fire extinguishing unmanned aerial vehicle

Abstract

The application discloses a heavy lifting fire extinguishing unmanned plane, which comprises a lifting unmanned plane assembly, a fire extinguishing liquid storage bin assembly and a position correcting clamp assembly are arranged at the bottom center of the lifting unmanned plane assembly, the fire extinguishing liquid storage bin assembly is fixed at the bottom of the lifting unmanned plane assembly in a position correcting mode through the position correcting clamp assembly, the neck of the bin is fixed below the unmanned plane body through the synchronous inward shrinking of the multiple clamp plates, the center of the neck of the bin is fixed at the center of the unmanned plane body through the synchronous inward shrinking of the multiple clamp plates, the position correcting fixing is realized, a locking assembly is arranged on one side of the position correcting clamp assembly, the clamp structure of the position correcting clamp assembly is locked through the locking assembly, a multistage fire extinguishing arm assembly is arranged on one side of the bottom of the lifting unmanned plane assembly, the fire extinguishing distance is adjusted through the multistage extension of the multistage fire extinguishing arm assembly, the fire extinguishing nozzle is driven to rotate through a driving motor, and the adjustment of the fire extinguishing angle of the fire extinguishing nozzle is realized.

Description

Technical Field

[0001] This invention belongs to the field of unmanned aerial vehicle (UAV) technology, specifically relating to a heavy-duty hoisting firefighting UAV. Background Technology

[0002] With the development of drone technology, drones are increasingly being used in emergency rescue, firefighting, and other fields. Traditional firefighting drones mostly use mounted firefighting devices to spray extinguishing agents, but the following problems still exist in practical applications:

[0003] Limited fire extinguishing agent carrying capacity: Most existing drones use external fire extinguishing canisters or fire extinguishing bombs, which have limited carrying capacity and cannot meet the needs of long-term and large-scale fire extinguishing, especially in the case of heavy fires where the fire extinguishing efficiency is low.

[0004] Inaccurate installation and positioning: Fire extinguishing devices are often installed on drones using simple fixing methods, lacking a fast and accurate positioning and locking mechanism. This makes them prone to shaking or shifting during flight, affecting flight stability and fire extinguishing accuracy.

[0005] Inflexible firefighting distance adjustment: Most existing firefighting drones use fixed nozzles or simple telescopic structures, which makes it difficult to achieve precise spraying over long distances and at multiple angles, and they are particularly unsuitable for complex spatial environments.

[0006] To address the aforementioned issues, a firefighting drone with heavy lifting capacity, precise positioning, a multi-stage extendable firefighting arm, and reliable locking function needs to be designed to improve firefighting efficiency and operational safety. Summary of the Invention

[0007] To address the problems mentioned in the background art, the present invention provides a heavy-duty hoisting firefighting drone with multi-stage extension firefighting capabilities.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a heavy-duty hoisting firefighting drone, comprising a hoisting drone assembly, wherein a fire extinguishing liquid storage tank assembly and a positioning clamp assembly are disposed at the center of the bottom of the hoisting drone assembly, the fire extinguishing liquid storage tank assembly is fixed to the bottom of the hoisting drone assembly in a positioning manner by the positioning clamp assembly, a multi-stage fire extinguishing arm assembly is disposed on one side of the bottom of the hoisting drone assembly, the fire extinguishing distance is adjusted by the multi-stage extension of the multi-stage fire extinguishing arm assembly, and a locking assembly is disposed on one side of the positioning clamp assembly, the clamp structure of the positioning clamp assembly is locked by the locking assembly.

[0009] In a preferred embodiment of a heavy-duty hoisting firefighting drone, the hoisting drone assembly includes a drone body, with hoisting tension straps provided at the four corners of the bottom of the drone body, support blocks fixedly provided at the bottom of the hoisting tension straps, and a placement platform fixedly provided between the support blocks.

[0010] In a preferred embodiment of a heavy-duty hoisting firefighting drone, the firefighting liquid storage tank assembly includes a liquid storage tank cylinder, and a cylinder neck is fixedly provided at the top of the liquid storage tank cylinder.

[0011] In a preferred embodiment of a heavy-duty hoisting firefighting drone, the positioning clamp assembly includes a clamp ring platform and a T-shaped clamp arm. A ring platform mounting seat is fixedly installed at the top of the clamp ring platform, and a connecting ring cylinder is fixedly installed at the bottom of the clamp ring platform. A supporting ring platform is fixedly installed at the bottom of the connecting ring cylinder. A side frame is fixedly installed on one side of the supporting ring platform. A synchronous drive ring platform is rotatably installed at the top of the supporting ring platform. A ring ratchet is fixedly installed at the bottom of the synchronous drive ring platform. An arc-shaped sliding groove is formed on the synchronous drive ring platform. A T-shaped sliding groove is formed inside the clamp ring platform. A clamp plate and a lever are fixedly installed at both ends of the T-shaped clamp arm, respectively. A lever plate is fixedly installed at the edge of the synchronous drive ring platform.

[0012] In a preferred embodiment of a heavy-duty hoisting firefighting drone, the multi-stage firefighting arm assembly includes a primary telescopic arm, a secondary telescopic arm, and a tertiary telescopic arm. The primary telescopic arm has second sliding grooves on both sides of its inner wall, and a second traveling toothed plate is fixedly installed at the bottom of its inner wall. One end of the primary telescopic arm is equipped with a drive cylinder and mounting screw holes. The top of the tertiary telescopic arm has a first traveling toothed plate fixedly installed, and second sliders are fixedly installed on both sides of its inner wall. One end of the tertiary telescopic arm is driven to rotate by a drive motor and is equipped with a drive arm. A fire extinguishing nozzle is fixedly installed at the top of the drive arm. The secondary telescopic arm has first sliding grooves on both sides of its top, and first sliders are fixedly installed on both sides of its bottom. An auxiliary gear is rotatably mounted at the center of the secondary telescopic arm.

[0013] In a preferred embodiment of a heavy-duty hoisting firefighting drone, the locking assembly includes a locking pawl, one end of which is fixedly provided with a pressing plate, and a top pressure spring is fixedly provided on the locking pawl.

[0014] In a preferred embodiment of a heavy-duty hoisting firefighting drone, the secondary telescopic arm slides within the primary telescopic arm, the first slider slides within the second slide groove, one end of the drive cylinder is fixedly connected to one end of the secondary telescopic arm, the tertiary telescopic arm slides outside the secondary telescopic arm, the second slider slides within the first slide groove, the auxiliary gear is disposed between the first and second traveling gear plates, the top of the auxiliary gear meshes with the first traveling gear plate, and the bottom of the auxiliary gear meshes with the second traveling gear plate, and the primary telescopic arm is fixed to the bottom of the drone body by fastening bolts and mounting screw holes.

[0015] In a preferred embodiment of a heavy-duty hoisting firefighting drone, the liquid storage tank is placed on a placement platform, and the liquid storage tank is pulled to the bottom of the drone body by the hoisting tensioning strap. The drone body is equipped with a pump with a delivery pipe inside, and the pump inside the drone body delivers the solution in the liquid storage tank to the fire extinguishing nozzle through the delivery pipe.

[0016] In a preferred embodiment of a heavy-duty hoisting firefighting drone, the top of the clamp ring platform is fixed to the bottom of the drone body by fastening bolts and a ring platform mounting seat, the T-shaped clamp arm slides in the clamp ring platform through a T-shaped sliding groove, and the actuating rod is inserted in the arc-shaped sliding groove.

[0017] In a preferred embodiment of a heavy-duty hoisting firefighting drone, the locking pawl is rotatably mounted on the support ring platform via a bearing, and the two ends of the top pressure spring are respectively fixed on the locking pawl and the T-shaped slide groove. Through the pushing of the top pressure spring against the locking pawl, the locking pawl abuts against the annular ratchet.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The present invention provides a fire extinguishing liquid storage tank assembly and a positioning clamp assembly at the bottom center of the hoisting drone assembly. The fire extinguishing liquid storage tank assembly is fixed to the bottom of the hoisting drone assembly in a positioning manner through the positioning clamp assembly. The tank neck is fixed to the bottom of the drone body by the synchronous inward retraction and abutment of multiple clamp plates. At the same time, the center of the tank neck is fixed to the center of the drone body by the synchronous inward retraction of multiple clamp plates, thereby achieving positioning and fixation.

[0020] 2. The positioning clamp assembly of the present invention is provided with a locking component on one side. The locking component locks the clamp structure of the positioning clamp assembly. The locking pawl is pushed by the top pressure spring, so that the locking pawl abuts against the annular ratchet. Through the pushing of the locking pawl and the annular ratchet, the synchronous drive ring platform is locked in one direction in the direction of rotation on the support ring platform. Through this one-way rotation, a clamp structure that is only tight and not loose is formed between multiple clamp plates, so as to realize timely locking when the fire extinguishing liquid storage tank assembly is positioned and fixed.

[0021] 3. The present invention provides a multi-stage fire extinguishing arm assembly on one side of the bottom of the hoisting drone component. The fire extinguishing distance is adjusted by the multi-stage extension of the multi-stage fire extinguishing arm assembly. When the second-stage telescopic arm extends outward on the first-stage telescopic arm, the third-stage telescopic arm extends outward synchronously on the second-stage telescopic arm through the cooperation of the auxiliary gear between the second and first travel gear plates. This achieves multi-stage rigid outward support for the fire extinguishing nozzle during use. At the same time, the fire extinguishing nozzle is driven to rotate by the drive motor, thereby adjusting the fire extinguishing angle of the fire extinguishing nozzle. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a perspective view of the positioning clamp assembly and locking assembly of the present invention;

[0024] Figure 3 This is an exploded view of the positioning clamp assembly and locking assembly of the present invention;

[0025] Figure 4 This is a perspective view of the multi-stage fire extinguishing arm assembly of the present invention;

[0026] Figure 5 This is an exploded view of the multi-stage fire extinguishing arm assembly of the present invention;

[0027] Figure 6 This is a cross-sectional view of the multi-stage fire extinguishing arm assembly of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 100, Lifting drone assembly; 101, Drone body; 102, Lifting tension strap; 103, Support block; 104, Placement platform; 200, Fire extinguishing liquid storage tank assembly; 201, Storage tank cylinder; 202, Tank neck; 300, Alignment clamp assembly; 301, Clamp ring platform; 302, Ring platform mounting seat; 303, T-shaped slide rail; 304, Connecting ring cylinder; 305, Support ring platform; 306, Clamp plate; 307, T-shaped clamp arm; 308, Actuating rod; 309, Actuating plate; 310, Annular ratchet; 311, Arc-shaped slide rail; 312, Synchronization. 313. Drive ring platform; 400. Side frame; 401. Multi-stage fire extinguishing arm assembly; 402. Three-stage telescopic arm; 403. Drive motor; 404. Fire extinguishing nozzle; 405. Drive arm; 406. First slide groove; 407. First slider; 408. Second-stage telescopic arm; 409. Auxiliary gear; 410. Second slide groove; 411. First-stage telescopic arm; 412. Drive cylinder; 413. Mounting screw hole; 414. Second slider; 415. First traveling toothed plate; 500. Locking assembly; 501. Locking pawl; 502. Pressing plate; 503. Top pressure spring. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-6As shown, the present invention provides a heavy-duty hoisting firefighting drone, including a hoisting drone assembly 100. A fire extinguishing liquid storage tank assembly 200 and a positioning clamp assembly 300 are disposed at the center of the bottom of the hoisting drone assembly 100. The fire extinguishing liquid storage tank assembly 200 is fixed to the bottom of the hoisting drone assembly 100 by the positioning clamp assembly 300. A multi-stage fire extinguishing arm assembly 400 is disposed on one side of the bottom of the hoisting drone assembly 100. The fire extinguishing distance can be adjusted by the multi-stage extension of the multi-stage fire extinguishing arm assembly 400. A locking assembly 500 is disposed on one side of the positioning clamp assembly 300 to lock the clamp structure of the positioning clamp assembly 300.

[0031] In a preferred embodiment, please refer to Figure 1 The hoisting drone assembly 100 includes a drone body 101. Hoisting tension straps 102 are provided at the four corners of the bottom of the drone body 101. Support blocks 103 are fixedly provided at the bottom of the hoisting tension straps 102. Placement platforms 104 are fixedly provided between the support blocks 103.

[0032] In this embodiment, a pump with an infusion tube is installed inside the drone body 101.

[0033] In this embodiment, the pump inside the drone body 101 delivers the solution in the storage tank 201 to the fire extinguishing nozzle 403 via the infusion pipe.

[0034] In a preferred embodiment, please refer to Figure 1 The fire extinguishing liquid storage tank assembly 200 includes a liquid storage tank 201, and a tank neck 202 is fixedly provided on the top of the liquid storage tank 201.

[0035] In this embodiment, the liquid storage tank 201 is placed on the placement platform 104.

[0036] In this embodiment, the liquid storage tank 201 is tightened to the bottom of the UAV body 101 by the lifting tensioning belt 102.

[0037] In a preferred embodiment, please refer to Figure 2 and Figure 3The positioning clamp assembly 300 includes a clamp ring platform 301 and a T-shaped clamp arm 307. A ring platform mounting seat 302 is fixedly installed on the top of the clamp ring platform 301, and a connecting ring cylinder 304 is fixedly installed on the bottom of the clamp ring platform 301. A supporting ring platform 305 is fixedly installed on the bottom of the connecting ring cylinder 304. A side frame 313 is fixedly installed on one side of the supporting ring platform 305. A synchronous drive ring platform 312 is rotatably installed on the top of the supporting ring platform 305. A ring ratchet 310 is fixedly installed on the bottom of the synchronous drive ring platform 312. An arc-shaped sliding groove 311 is opened on the synchronous drive ring platform 312. A T-shaped sliding groove 303 is opened in the clamp ring platform 301. A clamp plate 306 and a lever 308 are fixedly installed at both ends of the T-shaped clamp arm 307, respectively. A lever 309 is fixedly installed on the edge of the synchronous drive ring platform 312.

[0038] In this embodiment, the top of the clamp ring platform 301 is fixed to the bottom of the UAV body 101 by fastening bolts and ring platform mounting base 302.

[0039] In this embodiment, the T-shaped clamp arm 307 slides within the clamp ring platform 301 via the T-shaped groove 303.

[0040] In this embodiment, the toggle lever 308 is inserted into the arc-shaped groove 311.

[0041] In a preferred embodiment, please refer to Figures 4-6 The multi-stage fire extinguishing arm assembly 400 includes a primary telescopic arm 410, a secondary telescopic arm 407, and a tertiary telescopic arm 401. The primary telescopic arm 410 has second sliding grooves 409 on both sides of its inner wall, and a second traveling toothed plate 415 is fixedly installed at the bottom of its inner wall. One end of the primary telescopic arm 410 is provided with a drive cylinder 411 and a mounting screw hole 412. The top of the tertiary telescopic arm 401 is fixedly provided with a first traveling toothed plate 414, and both sides of its inner wall are fixedly provided with second sliders 413. One end of the tertiary telescopic arm 401 is driven to rotate by a drive motor 402 and is provided with a drive arm 404. A fire extinguishing nozzle 403 is fixedly installed at the top of the drive arm 404. The secondary telescopic arm 407 has first sliding grooves 405 on both sides of its top, and first sliders 406 are fixedly installed on both sides of its bottom. An auxiliary gear 408 is rotatably installed at the center of the secondary telescopic arm 407.

[0042] In this embodiment, the secondary telescopic arm 407 slides within the primary telescopic arm 410.

[0043] In this embodiment, the first slider 406 slides within the second groove 409.

[0044] In this embodiment, one end of the drive cylinder 411 is fixedly connected to one end of the secondary telescopic arm 407.

[0045] In this embodiment, the third-stage telescopic arm 401 slides outside the second-stage telescopic arm 407.

[0046] In this embodiment, the second slider 413 slides within the first groove 405.

[0047] In this embodiment, the auxiliary gear 408 is disposed between the first traveling gear plate 414 and the second traveling gear plate 415.

[0048] In this embodiment, the top of the auxiliary gear 408 meshes with the first traveling gear plate 414, and the bottom of the auxiliary gear 408 meshes with the second traveling gear plate 415.

[0049] In this embodiment, the first-stage telescopic arm 410 is fixed to the bottom of the UAV body 101 by fastening bolts and mounting screw holes 412.

[0050] In a preferred embodiment, please refer to Figure 2 and Figure 3 The locking assembly 500 includes a locking pawl 501, one end of which is fixedly provided with a pressing plate 502, and a top pressure spring 503 is fixedly provided on the locking pawl 501.

[0051] In this embodiment, the locking pawl 501 is rotatably mounted on the support ring platform 305 via a bearing.

[0052] In this embodiment, the two ends of the top pressure spring 503 are fixed to the locking pawl 501 and the T-shaped slide groove 303, respectively.

[0053] In this embodiment, the locking pawl 501 is pushed against the annular ratchet 310 by the top pressure spring 503.

[0054] The working principle of this invention is as follows: To solve the problem of hoisting and fixing the fire extinguishing liquid storage tank assembly 200 during use, the bottom center of the hoisting drone assembly 100 of this invention is provided with the fire extinguishing liquid storage tank assembly 200 and the positioning clamp assembly 300. The fire extinguishing liquid storage tank assembly 200 is fixed to the bottom of the hoisting drone assembly 100 by the positioning clamp assembly 300. In actual use, the storage tank 201 is placed on the placement platform 104, and the storage tank 201 is pulled towards the bottom of the drone body 101 by the tension of the hoisting tension strap 102. At the same time, when fixing the fire extinguishing liquid storage tank assembly 200, the neck of the tank is... 202 is inserted inside the clamp ring platform 301. At this time, the ring platform 312 is synchronously driven to rotate by the actuating plate 309. When the synchronous driving ring platform 312 rotates, the T-shaped clamp arm 307 is pushed inward by the arc-shaped sliding groove 311 and the actuating rod 308. Multiple T-shaped clamp arms 307 drive multiple clamp plates 306 to retract inward synchronously. Through the synchronous inward retraction and contact of multiple clamp plates 306, the bin neck 202 is fixed below the UAV body 101. At the same time, through the synchronous inward retraction of multiple clamp plates 306, the center of the bin neck 202 is fixed at the center of the UAV body 101, realizing the positioning and fixing.

[0055] Based on the above, in order to solve the locking problem during the positioning and fixing of the fire extinguishing liquid storage tank assembly 200, the positioning clamp assembly 300 of the present invention is provided with a locking assembly 500 on one side. The locking assembly 500 locks the clamp structure of the positioning clamp assembly 300. Specifically, the locking pawl 501 is rotatably mounted on the support ring platform 305 via a bearing. Since the locking pawl 501 and the annular ratchet 310 are located on the same horizontal plane, and the two ends of the top pressure spring 503 are respectively fixed on the locking pawl 501 and the T-shaped slide groove 303, the locking pawl 501 abuts against the annular ratchet 310 by the pushing of the top pressure spring 503. In actual use, the top pressure spring 503 pushes the locking pawl 501, causing the locking pawl 501 to abut against the annular ratchet 310. The 03 push of the locking pawl 501 causes it to abut against the annular ratchet 310. Through the push of the locking pawl 501 and the annular ratchet 310, the synchronous drive ring platform 312 is locked in one direction on the support ring platform 305. That is, the synchronous drive ring platform 312 only rotates counterclockwise on the support ring platform 305 and does not rotate in the opposite direction. When the synchronous drive ring platform 312 drives multiple clamping plates 306 to synchronously retract and approach the clamps through the arc-shaped slide groove 311 and the actuating rod 308, this one-way rotation makes the clamping plates 306 form a clamping structure that is only tight and not loose. Through this structure, timely locking is achieved when the fire extinguishing liquid storage tank assembly 200 is fixed in position.

[0056] Based on the above, in order to achieve rigid adjustment of the length of the fire extinguishing arm, a multi-stage fire extinguishing arm assembly 400 is provided on one side of the bottom of the hoisting drone assembly 100 of the present invention. The fire extinguishing distance is adjusted by the multi-stage extension of the multi-stage fire extinguishing arm assembly 400. Specifically, the secondary telescopic arm 407 slides within the primary telescopic arm 410 via the first slider 406 and the second slide groove 409, and the tertiary telescopic arm 401 slides on the secondary telescopic arm 407 via the second slider 413 and the first slide groove 405. At this time, the auxiliary gear 408 is set between the first traveling tooth plate 414 and the second traveling tooth plate 415. The top of the auxiliary gear 408 meshes with the first traveling tooth plate 414, and the bottom of the auxiliary gear 408 meshes with the second traveling tooth plate 415. In actual use, the secondary telescopic arm 407 is pushed inward and outward by the drive cylinder 411. When the first-stage telescopic arm 407 slides outward within the first-stage telescopic arm 410, the bottom of the auxiliary gear 408 engages and moves on the second traveling toothed plate 415. At this time, the top of the auxiliary gear 408 engages with the first traveling toothed plate 414, and the auxiliary gear 408 drives the third-stage telescopic arm 401 to slide outward synchronously on the second-stage telescopic arm 407 through the first traveling toothed plate 414. That is, when the second-stage telescopic arm 407 extends outward on the first-stage telescopic arm 410, the third-stage telescopic arm 401 extends outward synchronously on the second-stage telescopic arm 407 through the cooperation between the auxiliary gear 408 and the second traveling toothed plate 415 and the first traveling toothed plate 414. In this way, multi-stage rigid outward support is achieved when the fire extinguishing nozzle 403 is in use. At the same time, the fire extinguishing nozzle 403 is driven to rotate by the drive motor 402, thereby adjusting the fire extinguishing angle of the fire extinguishing nozzle 403.

[0057] It should be noted that, in another embodiment of the present invention, a lateral rotating structure may be provided below the fire extinguishing nozzle 403 for adjusting the extinguishing angle of the fire extinguishing nozzle 403 during lateral rotation. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0058] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy-duty hoisting firefighting drone, comprising a hoisting drone assembly (100), characterized in that, The bottom center of the hoisting drone assembly (100) is provided with a fire extinguishing liquid storage tank assembly (200) and a positioning clamp assembly (300). The fire extinguishing liquid storage tank assembly (200) is fixed to the bottom of the hoisting drone assembly (100) by the positioning clamp assembly (300). A multi-stage fire extinguishing arm assembly (400) is provided on one side of the bottom of the hoisting drone assembly (100). The fire extinguishing distance is adjusted by the multi-stage extension of the multi-stage fire extinguishing arm assembly (400). A locking assembly (500) is provided on one side of the positioning clamp assembly (300). The clamp structure of the positioning clamp assembly (300) is locked by the locking assembly (500). The positioning clamp assembly (300) includes a clamp ring platform (301) and a T-shaped clamp arm (307). A ring platform mounting base (302) is fixedly provided on the top of the clamp ring platform (301), and a connecting ring cylinder (304) is fixedly provided on the bottom of the clamp ring platform (301). A supporting ring platform (305) is fixedly provided on the bottom of the connecting ring cylinder (304). A side frame (313) is fixedly provided on one side of the supporting ring platform (305), and the top of the supporting ring platform (305) is rotatably mounted. A synchronous drive ring platform (312) is provided, with a ring ratchet (310) fixedly installed at the bottom of the synchronous drive ring platform (312), an arc-shaped slide groove (311) opened on the synchronous drive ring platform (312), a T-shaped slide groove (303) opened in the clamp ring platform (301), a clamp plate (306) and a toggle rod (308) fixedly installed at both ends of the T-shaped clamp arm (307), and a toggle plate (309) fixedly installed on the edge of the synchronous drive ring platform (312). The multi-stage fire extinguishing arm assembly (400) includes a primary telescopic arm (410), a secondary telescopic arm (407), and a tertiary telescopic arm (401). The primary telescopic arm (410) has second sliding grooves (409) on both sides of its inner wall, and a second traveling toothed plate (415) is fixedly installed at the bottom of its inner wall. One end of the primary telescopic arm (410) is provided with a drive cylinder (411) and a mounting screw hole (412). The top of the inner wall of the tertiary telescopic arm (401) is fixedly installed with a first traveling toothed plate (414), and the tertiary telescopic arm... The inner walls of the arm (401) are fixedly provided with second sliders (413). One end of the third telescopic arm (401) is driven to rotate by a drive motor (402) and is provided with a drive arm (404). The top of the drive arm (404) is fixedly provided with a fire extinguishing nozzle (403). The top two sides of the second telescopic arm (407) are provided with first sliding grooves (405), and the bottom two sides of the second telescopic arm (407) are fixedly provided with first sliders (406). The center of the second telescopic arm (407) is provided with an auxiliary gear (408).

2. The heavy-duty hoisting firefighting drone according to claim 1, characterized in that, The hoisting drone assembly (100) includes a drone body (101), with hoisting tension straps (102) provided at the four corners of the bottom of the drone body (101), support blocks (103) fixedly provided at the bottom of the hoisting tension straps (102), and a placement platform (104) fixedly provided between the support blocks (103).

3. The heavy-duty hoisting firefighting drone according to claim 2, characterized in that, The fire extinguishing liquid storage tank assembly (200) includes a liquid storage tank (201), and a tank neck (202) is fixedly provided on the top of the liquid storage tank (201).

4. The heavy-duty hoisting firefighting drone according to claim 3, characterized in that, The locking assembly (500) includes a locking pawl (501), one end of which is fixedly provided with a pressing plate (502), and a top pressure spring (503) is fixedly provided on the locking pawl (501).

5. A heavy-duty hoisting firefighting drone according to claim 4, characterized in that, The secondary telescopic arm (407) slides within the primary telescopic arm (410), the first slider (406) slides within the second slide groove (409), one end of the drive cylinder (411) is fixedly connected to one end of the secondary telescopic arm (407), the tertiary telescopic arm (401) slides outside the secondary telescopic arm (407), the second slider (413) slides within the first slide groove (405), the auxiliary gear (408) is disposed between the first traveling toothed plate (414) and the second traveling toothed plate (415), the top of the auxiliary gear (408) meshes with the first traveling toothed plate (414), the bottom of the auxiliary gear (408) meshes with the second traveling toothed plate (415), and the primary telescopic arm (410) is fixed to the bottom of the UAV body (101) by fastening bolts and mounting screw holes (412).

6. A heavy-duty hoisting firefighting drone according to claim 4, characterized in that, The liquid storage tank (201) is placed on the placement platform (104). The liquid storage tank (201) is pulled to the bottom of the UAV body (101) by the lifting tensioning belt (102). The UAV body (101) is equipped with a pump with a delivery pipe. The pump in the UAV body (101) delivers the solution in the liquid storage tank (201) to the fire extinguishing nozzle (403) through the delivery pipe.

7. A heavy-duty hoisting firefighting drone according to claim 4, characterized in that, The top of the clamp ring platform (301) is fixed to the bottom of the UAV body (101) by fastening bolts and ring platform mounting base (302). The T-shaped clamp arm (307) slides in the clamp ring platform (301) through the T-shaped slide groove (303). The actuating rod (308) is inserted in the arc-shaped slide groove (311).

8. A heavy-duty hoisting firefighting drone according to claim 4, characterized in that, The locking pawl (501) is rotatably mounted on the support ring platform (305) via a bearing. The two ends of the top pressure spring (503) are respectively fixed on the locking pawl (501) and the T-shaped slide (303). Through the top pressure spring (503) pushing the locking pawl (501), the locking pawl (501) abuts against the annular ratchet (310).

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