Recoil-free device for fire extinguishing of unmanned aerial vehicle

Abstract

The recoil-free device comprises a support arranged on the unmanned aerial vehicle, a control box, a power device and a spraying telescopic pipe used for fire extinguishing, a universal shaft is arranged in the middle of the lower end of the support, and a center connector connected with the spraying telescopic pipe is arranged at the lower end of the universal shaft. A fire extinguishing agent access end is arranged at the lower end of the center connector, a rear abutting fan is arranged at the end, opposite to the spraying telescopic pipe, of the center connector, the number of the power devices is multiple, and the rotating face of each power device is perpendicular to the rotating face of the corresponding rear abutting fan. The recoil-free device automatically balances recoil generated when a fire extinguishing agent is sprayed by automatically controlling the rotating speed of the rear abutting fan, the influence of the recoil generated when the fire extinguishing agent is sprayed on control of the unmanned aerial vehicle is eliminated, the spraying pipe is kept in a horizontal state all the time, the accuracy of the fire extinguishing direction is improved, and the fire extinguishing effect of the unmanned aerial vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of unmanned aerial vehicle fire extinguishing equipment, in particular to a kind of unmanned aerial vehicle fire extinguishing rear seat force device. BACKGROUND

[0002] With the development of unmanned aerial vehicle technology, unmanned aerial vehicle gradually enters different fields of people's life, due to fire rescue, face complex terrain, high-rise fire and fire in dangerous environment, traditional fire extinguishing method has many limitations, therefore unmanned aerial vehicle will be applied to fire extinguishing, fire extinguishing agent is installed on the bracket of unmanned aerial vehicle, by opening fire extinguishing agent valve, fire extinguishing agent can be sprayed to fire center, to realize the fire extinguishing operation in complex environment.

[0003] At present, when unmanned aerial vehicle is used for fire extinguishing work in market, fire extinguishing device is fixedly connected with unmanned aerial vehicle, and its spray gun is fixed on unmanned aerial vehicle, when unmanned aerial vehicle is adjusted to fly forward, backward and left and right, the inclination of fuselage makes spray gun also shake, the back force of spray gun to the outward spray of fire extinguishing agent adds a transverse back force to unmanned aerial vehicle, which seriously affects the control of unmanned aerial vehicle. The rear seat force device of existing unmanned aerial vehicle in market cannot accurately eliminate the back force. Based on the above reasons, it is necessary to design a rear seat force device which can automatically and accurately offset the back force generated when unmanned aerial vehicle sprays fire extinguishing agent, without affecting the control of unmanned aerial vehicle. UTILITY MODEL CONTENT

[0004] In view of the above problems existing in prior art, the utility model aims at providing a rear seat force device which can automatically and accurately offset the back force generated when unmanned aerial vehicle sprays fire extinguishing agent, without affecting the control of unmanned aerial vehicle, to improve the safety of unmanned aerial vehicle control, improve the accuracy and efficiency of fire extinguishing.

[0005] To achieve the above purpose, the utility model technical scheme is as follows:

[0006] A rear seat force device for unmanned aerial vehicle fire extinguishing, comprising a bracket, a control box, a power device and a spray telescopic pipe for fire extinguishing arranged on unmanned aerial vehicle, a universal shaft is arranged at the lower middle part of the bracket, a central connector connected with the spray telescopic pipe is arranged at the lower end of the universal shaft, a fire extinguishing agent access end is arranged at the lower end of the central connector, a rear wind machine is arranged at the opposite end of the central connector and the spray telescopic pipe, for offsetting the back force of fire extinguishing agent spray.

[0007] As preferred, the number of power devices is multiple groups, and the rotation surface of the power device is perpendicular to the rotation surface of the rear wind machine.

[0008] As preferred, a rear seat force stability control system is arranged on the control box, an inclination sensor is arranged on the central connector, and the inclination sensor is electrically connected with the control box.

[0009] As preferred, the outside end of the spray telescopic pipe is sequentially provided with a spray head and a window breaker, and the rear wind-resisting fan is provided with a connecting rod between the center connector.

[0010] As preferred, the lower end of the support is provided with a limiting frame on both sides, and the spray telescopic pipe is located inside the limiting frame.

[0011] As preferred, the universal shaft comprises a first shaft fixed with the support, the lower end of the first shaft is provided with a second shaft, and the first shaft and the second shaft are connected through a cross universal joint.

[0012] As preferred, the outside of the support located at the universal shaft is provided with a swing limiting sleeve, and the swing limiting sleeve and the universal shaft are provided with a movable gap for limiting the swing amplitude of the universal shaft.

[0013] As preferred, the inside lower end of the swing limiting sleeve is provided with a rubber sleeve, and the rubber sleeve and the universal shaft are provided with a movable cavity.

[0014] Compared with the prior art, the recoilless device provided by the utility model can accurately offset the recoil of the unmanned aerial vehicle fire extinguishing agent spray, increase the stability of the unmanned aerial vehicle fire extinguishing, and improve the fire extinguishing direction accuracy. Specifically, the use of the universal shaft on the support makes the fire extinguishing device movably connected with the unmanned aerial vehicle, the use of the recoil stability control system and the inclination sensor can detect the inclination state of the center connector, control the power of the rear wind-resisting fan, make the fan counterforce offset the recoil generated when the fire extinguishing agent is sprayed, and keep the spray telescopic pipe horizontal, which is very beneficial to the control of the unmanned aerial vehicle and the fire extinguishing work.

[0015] Moreover, the use of the swing limiting sleeve outside the universal shaft can limit the swing amplitude of the universal shaft, prevent the interference of the spray telescopic pipe and the rear wind-resisting fan on other components of the unmanned aerial vehicle due to the excessive swing amplitude of the fire extinguishing device.

[0016] It should be understood that the general description and the details herein are only exemplary and illustrative, but not for limiting the disclosure.

[0017] The present application file provides a variety of implementations or exemplary summaries of the technology described in the disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the recoilless device of the utility model;

[0019] Figure 2 It is another structure schematic diagram of the recoilless device of the utility model;

[0020] Figure 3 The utility model discloses a rear seat force device middle support and the structure diagram of swing limiting sleeve.

[0021] Figure 4 The utility model discloses a rear seat force device middle swing limiting sleeve's structure section view.

[0022] Figure 5 The utility model discloses a rear seat force device middle universal shaft and swing limiting sleeve's partial structure section view.

[0023] Main figure mark:

[0024] 1, support, 2, control box, 3, power device, 4, window breaker, 5, limiting frame, 6, movable gap, 7, first shaft, 8, second shaft, 9, swing limiting sleeve, 10, rubber sleeve, 11, movable cavity, 13, center connector, 14, spray telescopic pipe, 15, spray head, 16, connecting rod, 17, rear resistance fan, 18, rear seat force stability control system, 19, inclination sensor, 20, fire extinguishing agent access end. Specific implementation

[0025] In order to make the purpose, technical scheme and advantage of the embodiment of the present disclosure more clear, the following is more clear, detailed description of the embodiment of the present disclosure. Note: the described embodiment is a part of the embodiment of the present disclosure, not all embodiments. Based on the described embodiment of the present disclosure, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present disclosure.

[0026] As shown in the accompanying Figure 1 to the accompanying Figure 5 The utility model discloses a rear seat force device, through setting up universal shaft in the lower end middle part of control box 2, the lower end of universal shaft sets up the center connector 13 connected with spray telescopic pipe 14, the lower end of center connector 13 sets up fire extinguishing agent access end 20, when fire extinguishing agent and rear seat force device fire extinguishing device are connected, can connect fire extinguishing agent pipe on fire extinguishing agent access end 20, and its export end is connected through with spray telescopic pipe 14, through the use of universal shaft, the movable installation of fire extinguishing device is in the lower end of unmanned plane, eliminates the influence of unmanned plane front and back left and right inclination to fire extinguishing device, then, sets up rear resistance fan 17 at the opposite end of center connector 13 and spray telescopic pipe 14, through the application of the use of inclination sensor 19 in center connector 13, can detect the inclination state of spray telescopic pipe 14, control the working power of rear resistance fan 17, adjust its rotation speed and counterthrust, counteract the rear seat force when fire extinguishing device sprays fire extinguishing agent, eliminate the influence of unmanned plane control after spraying fire extinguishing agent rear seat force, increase the fire extinguishing precision of fire extinguishing device.

[0027] Wherein, it is worth mentioning that in order to ensure the stable use of unmanned aerial vehicle fire extinguishing device, such as Figure 2 Or 3, the existing unmanned aerial vehicle will use multiple power devices 3 evenly arranged on the support 1 of the unmanned aerial vehicle, and avoid the contact between the power device 3 and the rear wind resistance machine 17, then the rotation surface of the power device 3 is perpendicular to the rotation surface of the rear wind resistance machine 17, and the rear seat force of the unmanned aerial vehicle fire extinguishing device is offset by the opposite arrangement of the rear wind resistance machine 17 and the jet telescopic pipe 14.

[0028] In addition, as shown in Figure 3 When the rear seat force of the fire extinguishing device is processed, the rear seat force stabilizing control system 18 can be arranged on the control box 2, the inclination sensor 19 is arranged on the center connector 13, and the inclination sensor 19 is electrically connected with the control box 2. By using the angle detection technology of the existing sensor, the inclination angle of the center connector 13 can be detected, and the data is transmitted to the control box 2, which facilitates the adjustment of the rear seat force stabilizing control system 18 in the control box 2 to adjust the rear wind resistance machine 17; when the fire extinguishing work is carried out, the greater the jet pressure of the jet telescopic pipe 14, the stronger the rear seat force, and the greater the inclination angle. The detection data is fed back to the rear seat force stabilizing control system 18 of the control box 2, which can increase the power of the rear wind resistance machine 17, increase the thrust, keep the jet telescopic pipe 14 horizontal, and quickly and efficiently keep the fire extinguishing mechanism horizontal, perfectly solve the problem of rear seat force of the fire extinguishing device.

[0029] In some embodiments, as shown in Figure 3 The jet head 15 and the window breaker 4 can be arranged in sequence at the end of the jet telescopic pipe 14, the fire extinguishing agent in the jet telescopic pipe 14 is sprayed out through the jet head 15, in order to keep the rear wind resistance machine 17 stable on the center connector 13, the length of the connecting rod 16 between the rear wind resistance machine 17 and the center connector 13 can be adjusted to ensure the balance of the fire extinguishing jet pipe and the weight of the rear wind resistance machine, and keep the fire extinguishing device horizontal without rear seat force.

[0030] In order to improve the influence of the rear seat force on the fire extinguishing device during the fire extinguishing work, in some embodiments, the universal shaft can use the first shaft 7 fixed with the support 1, then the second shaft 8 is connected at the lower end of the first shaft 7, and the first shaft 7 and the second shaft 8 are connected with the "cross" universal joint, which facilitates the universal shaft to use the first shaft 7, the second shaft 8 and the universal joint to movably arrange the fire extinguishing device on the unmanned aerial vehicle, and the forward and backward inclination of the unmanned aerial vehicle will not affect the fire extinguishing device, thereby improving the use effect of the fire extinguishing device.

[0031] In addition, in some embodiments, the existing parking rack of the unmanned aerial vehicle can also be used, and a limiting frame 5 with a limiting space is arranged on the parking rack, as shown in Figure 1 And 2As shown, the injection telescopic pipe 14 is then arranged in the limiting frame 5, and the up-down and left-right of the injection telescopic pipe 14 can be limited by the use of the limiting frame 5, so as to prevent the injection pipe and the rear wind-resisting machine from interfering with other components of the unmanned aerial vehicle.

[0032] In some embodiments, the swing limiting sleeve 9 can be used to limit the activity range of the universal shaft, so as to avoid excessive angle change of the universal shaft, as shown in Figure 4 and 5 As shown, the swing limiting sleeve 9 can be arranged on the support 1 outside the universal shaft, and an activity gap 6 is left between the swing limiting sleeve 9 and the universal shaft, so as to provide favorable conditions for the activity connection of the universal shaft and the fire extinguishing device, wherein the swing limiting sleeve 9 semi-closes the second shaft 8 of the universal shaft in the swing limiting sleeve 9, so as to limit the swing amplitude of the universal shaft.

[0033] Further, as shown in Figure 4 and 5 In order to limit the up-down and left-right excessive angle inclination of the universal shaft, a rubber sleeve 10 can be arranged at the inner lower end of the swing limiting sleeve 9, and an activity cavity 11 is arranged between the rubber sleeve 10 and the second shaft 8 of the universal shaft, and the rubber sleeve has a buffering effect.

[0034] Of course, the above-mentioned is the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the protection scope of the present application.

Claims

1. A recoilless device for unmanned aerial vehicle fire extinguishing, comprising a support (1), a control box (2), a power device (3) and a spray telescopic pipe (14) for fire extinguishing, characterized in that: the lower middle part of the support (1) is provided with a universal shaft, the lower end of the universal shaft is provided with a center connector (13) connected with the spray telescopic pipe (14), the lower end of the center connector (13) is provided with a fire extinguishing agent access end (20), the center connector (13) and the opposite end of the spray telescopic pipe (14) are provided with a rear wind machine (17) for eliminating the recoil of the fire extinguishing device.

2. The recoilless device for unmanned aerial vehicle fire extinguishing according to claim 1, characterized in that The number of power devices (3) is multiple, and the rotation surface of the power device (3) is perpendicular to the rotation surface of the rear wind machine (17).

3. The recoilless device for unmanned aerial vehicle fire extinguishing according to claim 1, characterized in that The control box (2) is provided with a recoil force stabilizing control system (18), the center connector (13) is provided with an inclination sensor (19), and the inclination sensor (19) is electrically connected with the control box (2).

4. The recoilless device for unmanned aerial vehicle fire extinguishing according to claim 1, characterized in that, The outer end of the spray telescopic pipe (14) is provided with a spray head (15) and a window breaker (4) in sequence, and the rear wind machine (17) and the center connector (13) are provided with a connecting rod (16).

5. The recoilless device for unmanned aerial vehicle fire extinguishing according to claim 4, characterized in that The lower end of the support (1) is provided with a limiting frame (5) on both sides, and the spray telescopic pipe (14) is located in the limiting frame (5).

6. The recoilless device for unmanned aerial vehicle fire extinguishing according to claim 1, characterized in that The universal shaft comprises a first shaft (7) fixed with the support (1), the lower end of the first shaft (7) is connected with a second shaft (8), and the first shaft (7) and the second shaft (8) are connected through a "cross" universal joint.

7. The recoilless device for unmanned aerial vehicle fire extinguishing according to claim 6, characterized in that The outer side of the support (1) is provided with a swing limiting sleeve (9) located outside the universal shaft, and the swing limiting sleeve (9) and the universal shaft are provided with a movable gap (6) for limiting the swing amplitude of the universal shaft.

8. The recoilless device for unmanned aerial vehicle fire extinguishing according to claim 7, characterized in that The inside lower end of the swing limiting sleeve (9) is provided with a rubber sleeve (10), and the rubber sleeve (10) and the universal shaft are provided with a movable cavity (11).

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