Spraying assembly of fire-fighting unmanned aerial vehicle

Abstract

The utility model belongs to the technical field of fire extinguishing of unmanned aerial vehicles, and particularly relates to a spraying assembly of a fire-fighting unmanned aerial vehicle, which comprises a liquid storage tank, and a delivery pump is arranged at the bottom end of the liquid storage tank; the spraying mechanism comprises two sets of mounting columns arranged on the fire-fighting unmanned aerial vehicle, a spraying pipe communicated with the conveying pump, a motor and a round rod, spraying heads are evenly distributed on the spraying pipe, the round rod is rotationally connected into the spraying pipe, one end of the round rod is fixedly connected with an output shaft of the motor, and the other end of the round rod is fixedly connected with the conveying pump. And the surface of the round rod is fixedly connected with two groups of plugging plates. When the fire-fighting unmanned aerial vehicle conducts fire extinguishing operation, fire extinguishing can be conducted through one or three or five spray heads in different states according to the site fire situation, the device can be freely adjusted according to the site fire situation, the fire extinguishing operation is more suitable for different stages of the fire site, the fire point is accurately extinguished, and the fire extinguishing effect of the fire-fighting unmanned aerial vehicle is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of UAV fire extinguishing, and particularly relates to a spraying assembly of a fire-fighting UAV. Background Art

[0002] A UAV is an unmanned aircraft controlled by a radio remote control device and a self-provided program control device. In the civilian aspect, UAV + industry applications have broad prospects. UAVs with corresponding function modules are used in fields such as aerial photography, agriculture, plant protection, express delivery, disaster rescue, wildlife observation, mapping, and power line inspection. When a forest fire breaks out, the UAV carries fire-fighting equipment to the fire point to temporarily extinguish the fire or limit the spread of the fire.

[0003] Normally, a water tank, a spray gun, a water pump, and a controller are hung at the bottom of the existing UAV. After the UAV flies to the designated area, it starts to spray water at the fire point. Since the spray gun is horizontally arranged and can only spray water in one direction, the UAV itself needs to bear the reaction force of the water flow, which will cause the overall imbalance of the UAV. In fact, most fire points are on the horizontal plane. When the UAV extinguishes the fire, it needs to be at a certain distance from the fire point. The water pressure and its spraying distance are controlled by the water pump, and the landing point is not accurate enough; after retrieval, the Chinese patent "A fire-fighting UAV with precise delivery" with the authorization announcement number "CN221273546U" changes the traditional spray gun into a water spray pipe and sets it as a part of the landing gear of the UAV. The water spray pipe serves as a horizontal strut, which can not only increase the strength of the landing gear but also better withstand the impact when landing without deformation. After several water outlets are arranged on the water spray pipe, a spraying effect similar to that of a shower can be formed to accurately extinguish a large-scale fire point located below the UAV; although the above application can form a spraying effect similar to that of a shower, increasing the number of nozzles will also reduce the water pressure in the water pipe, affect the spraying distance of the nozzles, and is not convenient for accurately extinguishing a small-scale fire point at a long distance. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a spraying assembly of a fire-fighting UAV, which can switch the spraying state of the spraying assembly, make the spraying assembly more conform to the on-site fire-fighting situation, and perform precise fire-fighting operations on the fire source.

[0005] The technical solution adopted by the utility model is specifically as follows:

[0006] A spraying assembly of a fire-fighting UAV includes a liquid storage tank, and a delivery pump is arranged at the bottom end of the liquid storage tank;

[0007] Spraying mechanism, the spraying mechanism includes two sets of mounting columns arranged on the fire-fighting drone, a spraying pipe communicated with a delivery pump, a motor and a round rod. The spraying pipe is provided with uniformly distributed nozzles. The round rod is rotatably connected inside the spraying pipe, and one end of the round rod is fixedly connected to the output shaft of the motor. Two sets of blocking plates are fixedly connected to the surface of the round rod, and the blocking plates can control the number of nozzles opened during fire-fighting operations;

[0008] Rotating adjustment mechanism, which can adjust the inclination angle of the nozzle by rotating the angle of the spraying pipe. The rotating adjustment mechanism is arranged between the two spraying pipes.

[0009] In a preferred solution, the rotating adjustment mechanism includes a mounting frame fixedly connected to the fire-fighting drone and a dual-axis motor. The dual-axis motor is fixedly installed at the bottom end of the mounting frame. Power rods are fixedly connected to both output shafts of the dual-axis motor. Conical gears that mesh with each other are fixedly connected to the end of the power rod and the middle part of the surface of the spraying pipe respectively.

[0010] In a preferred solution, the spraying mechanism further includes two sets of mounting columns installed on the bracket of the fire-fighting drone. The number of each set of mounting columns is two. The motor is installed in one of the mounting columns, and a counterweight is arranged in the other mounting column. The spraying pipe is rotatably connected between the two mounting columns.

[0011] In a preferred solution, the number of one set of the blocking plates is two, the number of the other set of the blocking plates is four, and the number of the nozzles is five.

[0012] In a preferred solution, a sealing gasket is arranged on the side of the blocking plate away from the round rod, and the sealing gasket is a rubber material component.

[0013] In a preferred solution, one end of the round rod sequentially penetrates through the spraying pipe and the mounting column and is fixedly connected to the output shaft of the motor. A sealing bearing is arranged at the connection between the round rod and the spraying pipe.

[0014] In a preferred solution, a tee is arranged at the water outlet end of the delivery pump, and the other two ends of the tee are respectively communicated with the corresponding spraying pipes.

[0015] The technical effects achieved by the present utility model are:

[0016] When the above-mentioned fire-fighting drone is in fire-fighting operation, it can extinguish the fire by using one, three or five nozzles according to the on-site fire situation. When using five nozzles to extinguish the fire, the water pressure of the nozzles decreases, but the spraying range is increased, which is suitable for large-scale fire-fighting operations, improves the large-scale fire-fighting effect, and uses the cooperation of the round rod and the blocking plate. When one nozzle operates, the water pressure at the nozzle can be increased, the spraying distance can be increased, and precise fire-fighting operations can be carried out on a single fire source. When three nozzles operate, it is between the two, enabling the device to be freely adjusted according to the on-site fire situation, making the fire-fighting operation more suitable for different stages of the fire scene, accurately extinguishing the ignition point, improving the fire-fighting effect of the fire-fighting drone, and the combination of two mounting columns and one spraying pipe can increase the connection stability between the drone brackets;

[0017] When the above-mentioned fire-fighting drone is in fire-fighting operation, the rotation adjustment mechanism can drive the spraying pipe and the nozzle to swing reciprocally by the meshing rotation of two sets of bevel gears, so that when the spraying mechanism is extinguishing the fire, it can form a spraying effect similar to a shower head, and this structure can also be used to adjust the angle of the nozzle during fire extinguishing, reducing the adjustment range of the drone during fire extinguishing and improving the fire-fighting efficiency. Brief Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the structural schematic diagram of the present utility model installed on a fire-fighting drone;

[0020] Figure 3 is the structural schematic diagram of the spraying mechanism of the present utility model;

[0021] Figure 4 is the connection schematic diagram of the motor, the round rod and the blocking plate of the present utility model;

[0022] Figure 5 is the connection schematic diagram of the spraying mechanism and the rotation adjustment mechanism of the present utility model.

[0023] In the drawings, the list of components represented by each reference numeral is as follows:

[0024] 100, liquid storage tank; 200, delivery pump; 300, spraying mechanism; 310, mounting column; 311, spraying pipe; 312, nozzle; 320, motor; 321, round rod; 322, blocking plate; 323, sealing gasket; 324, sealing bearing; 325, counterweight; 400, rotation adjustment mechanism; 410, mounting frame; 411, double-shaft motor; 412, power rod; 413, bevel gear. Detailed Description of the Preferred Embodiments

[0025] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given in conjunction with the accompanying drawings of the specification.

[0026] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can 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 utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0027] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The phrase "in a preferred embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an independent or selectively mutually exclusive embodiment with other embodiments.

[0028] Thirdly, the present utility model is described in detail in conjunction with schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model here. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0029] Embodiment 1

[0030] Please refer to the attached Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown in the figures, this is the first embodiment of the present utility model. This embodiment provides a spraying assembly for a fire-fighting drone, which includes a liquid storage tank 100, and a delivery pump 200 is arranged at the bottom end of the liquid storage tank 100;

[0031] A spraying mechanism 300, the spraying mechanism 300 includes two groups of mounting columns 310 arranged on the fire-fighting drone, a spraying pipe 311 communicated with the delivery pump 200, a motor 320 and a round rod 321. The spraying pipe 311 is provided with uniformly distributed nozzles 312. The round rod 321 is rotatably connected inside the spraying pipe 311, and one end of the round rod 321 is fixedly connected to the output shaft of the motor 320. Two groups of blocking plates 322 are fixedly connected to the surface of the round rod 321, and the blocking plates 322 can control the number of nozzles 312 opened during fire-fighting operations.

[0032] It should be noted that the fire extinguishing solution in the liquid storage tank 100 of the fire-fighting drone needs to be added according to the properties required at the fire scene. Conventional fire extinguishing uses an aqueous solution. At the same time, when the fire-fighting drone is in use, it will have an operating system built-in and be operated using a handle. At the same time, it will have a reconnaissance system built-in, including a camera and sensors, to monitor the fire scene and provide detailed data for more accurate extinguishing of the fire source.

[0033] In a preferred embodiment, please refer to Figure 3 、 Figure 4 The spraying mechanism 300 further includes two sets of mounting posts 310 installed on the fire-fighting drone bracket. The number of each set of mounting posts 310 is two. The motor 320 is installed in one of the mounting posts 310, and a counterweight 325 is arranged in the other mounting post 310. The spraying pipe 311 is rotatably connected between the two mounting posts 310. When adjustment is needed, the motor 320 drives the round rod 321 to rotate, so as to use the sealing plate 322 to block the connection between the spraying pipe 311 and the nozzle 312. At the same time, it makes the spraying assembly more suitable for the on-site fire extinguishing situation and conducts precise fire extinguishing operations on the fire source. Moreover, the combination of the two mounting posts 310 and one spraying pipe 311 can increase the connection stability between the drone brackets, and the counterweight 325 is opposite to the position of the motor 320, which can make the weights of the two mounting posts 310 in the same group the same and improve the flight stability of the fire-fighting drone.

[0034] In a preferred embodiment, please refer to Figure 3 、 Figure 4 The number of one set of sealing plates 322 is two, the number of the other set of sealing plates 322 is four, and the number of nozzles 312 is five. When not blocked, the nozzles 312 are in five states. When the two sealing plates 322 are blocked, the device is in a state where three nozzles 312 are operating. When the four sealing plates 322 are operating, the device is in a state where a single nozzle 312 is operating.

[0035] In a preferred embodiment, please refer to Figure 3 、 Figure 4 On the side of the sealing plate 322 away from the round rod 321, there is a sealing gasket 323, and the sealing gasket 323 is a rubber material component. The rubber material itself has a certain flexibility, which can better fit the connection between the nozzle 312 and the spraying pipe 311, improve the blocking effect of the sealing plate 322 on the connection, and realize the free switching of the number of nozzles 312.

[0036] In a preferred embodiment, please refer to Figure 4, one end of the round rod 321 passes through the spraying pipe 311 and the mounting column 310 in sequence and is fixedly connected to the output shaft of the motor 320. A sealing bearing 324 is arranged at the connection between the round rod 321 and the spraying pipe 311. When the motor 320 drives the round rod 321 and the plugging plate 322 to rotate, the sealing bearing 324 can increase the sealing performance between the round rod 321 and the spraying pipe 311, and the spraying pipe 311 will not leak.

[0037] In a preferred embodiment, please refer to Figure 1 , Figure 2 , a tee is arranged at the water outlet end of the delivery pump 200, and the other two ends of the tee are respectively communicated with the corresponding spraying pipes 311. The delivery pump 200 can perform liquid injection operations on two spraying pipes 311 at the same time, reducing the number of delivery pumps 200 while ensuring the spraying range.

[0038] In this embodiment, when the fire-fighting UAV is performing fire-fighting operations, the delivery pump 200 is started. The delivery pump 200 delivers the fire-extinguishing solution in the liquid storage tank 100 into the spraying pipe 311 and sprays it out through the nozzle 312 to extinguish the fire source. According to the on-site fire-fighting situation, if precise fire-fighting is required, the motor 320 is started. The motor 320 will drive the round rod 321 to rotate, so as to use the plugging plate 322 to block the connection between the spraying pipe 311 and the nozzle 312. Because the number of the two plugging plates 322 is different, the device can be selected to extinguish the fire in three states of one, three or five nozzles 312. At the same time, the spraying assembly is more adapted to the on-site fire-fighting situation, and precise fire-fighting operations are carried out on the fire source. The device can be freely adjusted according to the on-site fire situation, and the fire-fighting operations are more adapted to different stages of the fire scene, so as to accurately extinguish the ignition point, improve the fire-fighting effect of the fire-fighting UAV, and the combination of the two mounting columns 310 and one spraying pipe 311 can increase the connection stability between the UAV brackets.

[0039] Embodiment 2

[0040] Please refer to the attached Figure 1 , Figure 2 As shown in the figure, this is the second embodiment of the present invention. This embodiment provides a spraying assembly of a fire-fighting UAV, including a rotation adjustment mechanism 400, which can adjust the inclination angle of the nozzle 312 by rotating the angle of the spraying pipe 311. The rotation adjustment mechanism 400 is arranged between the two spraying pipes 311.

[0041] In a preferred embodiment, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5, the rotation adjustment mechanism 400 includes a mounting bracket 410 fixedly connected to the fire-fighting drone and a dual-axis motor 411. The dual-axis motor 411 is fixedly installed at the bottom end of the mounting bracket 410. Power rods 412 are fixedly connected to both output shafts of the dual-axis motor 411. Tapered gears 413 that mesh with each other are fixedly connected to the ends of the power rods 412 and the middle part of the surface of the spraying pipe 311.

[0042] It should be noted that, as Figure 1 shown, mounting boxes are fixedly installed on both sides of the mounting bracket 410. The two tapered gears 413 in the same group are installed in the mounting boxes, and the mounting boxes are rotatably connected to the spraying pipe 311 and the power rods 412. Therefore, it will not affect the normal operation of the device, and can protect the tapered gears 413 from being directly exposed to the outside.

[0043] In this embodiment, when it is necessary to adjust the angles of the spraying pipe 311 and the nozzle 312, start the dual-axis motor 411. The power rods 412 will rotate following the rotation of its output shafts. Under the meshing connection of the two tapered gears 413, the spraying pipe 311 will rotate and be adjusted according to the required situation. If it is necessary to increase the spraying range, the dual-axis motor 411 can rotate forward and backward within a preset angle, and the rotation angle should be between zero and two hundred degrees. If it is necessary to accurately extinguish the fire, just aim the nozzle 312 at the ignition point. By using the reciprocating swing of the spraying pipe 311 and the nozzle 312, a spraying effect similar to that of a shower head can be formed, and this structure can also be used to adjust the angle of the nozzle 312 during fire extinguishing, reducing the adjustment range of the drone during fire extinguishing and improving the fire extinguishing efficiency.

[0044] The working principle of the present utility model is as follows: When the fire-fighting drone is performing a fire extinguishing operation, it is necessary to add the fire extinguishing solution to the liquid storage tank 100. After the fire-fighting drone reaches the designated position, the delivery pump 200 can be started. The delivery pump 200 transports the fire extinguishing solution in the liquid storage tank 100 into the spraying pipe 311 and sprays it out through the nozzle 312 to extinguish the fire source. According to the on-site fire extinguishing situation, the rotation adjustment mechanism 400 can be started to drive the spraying pipe 311 and the nozzle 312 to perform a reciprocating swing within a certain range, forming a fire extinguishing operation similar to that of a shower head. If it is necessary to accurately extinguish the fire, start the motor 320. The motor 320 will drive the round rod 321 to rotate, thereby using the sealing plate 322 to block the connection between the spraying pipe 311 and the nozzle 312. Due to the different numbers of the two groups of sealing plates 322, the device can be selected to extinguish the fire in three states with one, three or five nozzles 312, and at the same time make the spraying assembly more conform to the on-site fire extinguishing situation and perform accurate fire extinguishing operations on the fire source.

[0045] It should be noted that the liquid storage tank 100, the delivery pump 200, the nozzle 312, the motor 320 and the dual-axis motor 411 in the above description are all devices with relatively mature applications in the prior art. The specific models can be selected according to actual needs. At the same time, the power supply of the delivery pump 200, the motor 320 and the dual-axis motor 411 is powered by an internal power supply, which will not be elaborated here.

[0046] The above is only the preferred embodiment of the present invention. It should be pointed out 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, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A spraying component of a fire-fighting drone, applied to a fire-fighting drone, characterized in that: It includes a liquid storage tank (100), and a delivery pump (200) is provided at the bottom end of the liquid storage tank (100); A spraying mechanism (300), the spraying mechanism (300) includes two mounting columns (310) arranged on a fire-fighting drone, a spraying pipe (311) communicated with the delivery pump (200), a motor (320) and a round rod (321). The spraying pipe (311) is provided with evenly distributed nozzles (312). The round rod (321) is rotatably connected inside the spraying pipe (311), and one end of the round rod (321) is fixedly connected to the output shaft of the motor (320). Two blocking plates (322) are fixedly connected to the surface of the round rod (321), and the blocking plates (322) can control the number of nozzles (312) opened during fire-fighting operations; A rotation adjustment mechanism (400), which can adjust the inclination angle of the nozzle (312) by rotating the angle of the spraying pipe (311). The rotation adjustment mechanism (400) is arranged between the two spraying pipes (311).

2. The spraying assembly of the fire-fighting drone according to claim 1, characterized in that: The rotation adjustment mechanism (400) includes a mounting frame (410) fixedly connected to the fire-fighting drone and a bi-axial motor (411). The bi-axial motor (411) is fixedly installed at the bottom end of the mounting frame (410). Power rods (412) are fixedly connected to both output shafts of the bi-axial motor (411). Tapered gears (413) that mesh with each other are fixedly connected to the end of the power rod (412) and the middle part of the surface of the spraying pipe (311).

3. The spraying assembly of the fire-fighting drone according to claim 1, characterized in that: The spraying mechanism (300) further includes two mounting columns (310) mounted on the bracket of the fire-fighting drone. The number of each group of mounting columns (310) is two. The motor (320) is installed in one of the mounting columns (310), and a counterweight (325) is arranged in the other mounting column (310). The spraying pipe (311) is rotatably connected between the two mounting columns (310).

4. The jet assembly of the fire-fighting drone according to claim 1, characterized in that: The number of one group of the blocking plates (322) is two, the number of the other group of the blocking plates (322) is four, and the number of the nozzles (312) is five.

5. The jet assembly of the fire-fighting drone according to claim 1, characterized in that: A sealing gasket (323) is arranged on the side of the blocking plate (322) away from the round rod (321), and the sealing gasket (323) is a rubber material component.

6. The jet assembly of the fire-fighting drone according to claim 1, characterized in that: One end of the round rod (321) sequentially penetrates through the spraying pipe (311) and the mounting column (310) and is fixedly connected to the output shaft of the motor (320). A sealing bearing (324) is arranged at the connection between the round rod (321) and the spraying pipe (311).

7. The jet assembly of the fire-fighting drone according to claim 1, characterized in that: A tee pipe is arranged at the water outlet end of the delivery pump (200), and the other two ends of the tee pipe are respectively communicated with the corresponding spraying pipes (311).

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