A drone-mounted window-breaking bomb

Abstract

The present invention discloses a window-breaking bullet carried by an unmanned aerial vehicle, comprising a shell, a conical warhead located at the front end of the shell, and a rocket engine located at the rear end of the shell, wherein the rocket engine is used to provide flight power for the window-breaking bullet, and at least two prefabricated grooves are provided on the inner wall of the conical warhead. The rocket engine is used to provide flight power for the window-breaking bullet, so that the window-breaking bullet can hit the glass window with a faster flight speed, a greater impact force and a more accurate impact position, thereby improving the window-breaking reliability of the window-breaking bullet; and the prefabricated grooves are provided on the inner wall of the conical warhead, so that the structural strength of the corresponding position of the conical warhead can be weakened. After the conical warhead hits the glass window, the conical warhead will automatically separate along the prefabricated grooves, and its aerodynamics will change. The remaining bullet body will not continue to fly in a straight line, but will quickly turn the flight direction and fall to the ground, thereby ensuring that the window-breaking bullet will not cause secondary damage when it enters the room.

Description

Technical Field

[0001] The present invention relates to the technical field of fire safety, and in particular to a window-breaking bullet carried by an unmanned aerial vehicle. Background Art

[0002] With the advancement of construction technology and the rapid development of cities, the number of high-rise buildings is increasing, especially super-high-rise buildings with a height of more than 120 meters. In order to enhance safety and aesthetics, the exterior window glass and glass curtain walls of the buildings are made of high-strength thick glass. Once a fire occurs, in order to implement external rescue and fire extinguishing, breaking these high-strength thick glasses becomes the primary key.

[0003] A Chinese patent with publication number CN110270020A has been retrieved and discloses a recoilless window breaker carried by a drone. The window breaker is carried to a high altitude by a drone to break glass curtain walls or external glass windows of high-rise buildings.

[0004] However, for this type of drone-mounted window breaker, the window-breaking bullet at the front end of the window breaker still has a lot of energy after breaking through the glass and entering the room, which can easily cause secondary damage inside the room. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the technical problem in the prior art that window-breaking bullets easily cause secondary damage indoors after breaking windows, thereby providing a drone-mounted window-breaking bullet.

[0006] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0007] A window-breaking bullet carried by an unmanned aerial vehicle comprises a shell and a conical warhead connected to the front end of the shell, wherein at least two prefabricated grooves are arranged on the inner wall of the conical warhead.

[0008] Furthermore, a concave cavity is provided inside the conical bullet, and the prefabricated groove is arranged on the inner wall of the conical bullet corresponding to the concave cavity.

[0009] Furthermore, the cavity is a conical cavity, and the prefabricated groove extends from the pointed end of the conical cavity to the open end of the conical cavity.

[0010] Furthermore, there are three prefabricated grooves, which are evenly spaced around the inner wall of the conical cavity.

[0011] Furthermore, one ends of the three prefabricated grooves converge on the inner wall of the conical bullet corresponding to the pointed end of the conical cavity.

[0012] Furthermore, the width of the prefabricated groove gradually increases from the tip close to the conical cavity to the opening of the conical cavity.

[0013] Furthermore, a groove is provided at the front end of the shell, which is recessed from the end surface where the shell is connected to the conical bullet toward the inside of the shell.

[0014] Furthermore, the groove is tapered.

[0015] Furthermore, the rear end of the shell is connected to a rocket engine that provides flight power for the window-breaking bomb.

[0016] Furthermore, a plurality of tail fins are circumferentially arranged on the outer wall of the rocket engine.

[0017] The technical solution of the present invention has the following advantages:

[0018] 1. The window-breaking bullet carried by an unmanned aerial vehicle provided by the present invention has at least two prefabricated grooves on the inner wall of the conical bullet, which can weaken the structural strength of the corresponding position of the conical bullet. After the conical bullet hits the glass window, the conical bullet will automatically separate along the prefabricated grooves, its aerodynamics will change, and the remaining bullet body will not continue to fly in a straight line, but will quickly change its flight direction and fall to the ground, ensuring that there is no secondary damage when the window-breaking bullet enters the room.

[0019] 2. The window-breaking bullet carried by an unmanned aerial vehicle provided by the present invention has a prefabricated groove extending from the pointed end of the conical cavity to the open end of the conical cavity, and the structural design of the groove width gradually increases, which can make the conical bullet automatically separate along the direction of the prefabricated groove better after being hit.

[0020] 3. The window-breaking bullet carried by the drone provided by the present invention has a groove at the front end of the shell. After the bullet hits the glass window and cracks and decomposes, the groove at the front end of the shell is affected by aerodynamic force. The direction of the resultant force of the aerodynamic force on the groove is toward the tail of the shell. The flight speed of the shell will be reduced after being acted upon by the resultant force. In addition, the lateral force of the aerodynamic force on the groove will cause the shell to turn. No matter which direction it turns, the shell will fall to the ground under the action of gravity, thereby avoiding secondary damage caused by the shell continuing to fly in a straight line into the room.

[0021] 4. The window-breaking bullet carried by the drone provided by the present invention adopts a rocket engine to provide flying power for the window-breaking bullet. Compared with the traditional method of sending the window-breaking bullet through the ejection system on the drone, the propulsion speed of the window-breaking bullet is faster, and the window-breaking bullet is less affected by the external environment after leaving the drone. The window-breaking bullet can hit the glass window with a faster flying speed, greater impact force and more accurate impact position, thereby improving the window-breaking reliability of the window-breaking bullet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the overall structure of a window-breaking bullet provided in an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of the structure of the conical warhead of the window-breaking bullet in an embodiment of the present invention;

[0025] Figure 3 Schematic diagram of the structure of the shell of the window breaking bullet in an embodiment of the present invention.

[0026] Explanation of the reference numerals: 1. Shell; 2. Conical warhead; 3. Rocket engine; 4. Tail fin; 5. Prefabricated groove; 6. Recess. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] like Figure 1 -3 shows a window-breaking bomb carried by a drone, which can be carried on a drone and used for fire fighting in high-rise buildings. The window-breaking bomb includes a shell 1, a conical warhead 2 connected to the front end of the shell 1, and a rocket engine 3 connected to the rear end of the shell 1. Specifically, the conical warhead 2 is made of metal material; three prefabricated grooves 5 are provided on the inner wall of the conical warhead 2. In some embodiments, the rocket engine 3 at the rear end of the shell 1 can be omitted, and the window-breaking bomb launcher or other power equipment on the drone can be used to provide flight power for the window-breaking bomb; in other embodiments, the number of prefabricated grooves 5 on the inner wall of the conical warhead 2 can also be two, four or more.

[0032] Arranging three prefabricated grooves 5 on the inner wall of the conical warhead 2 of the window-breaking bullet can reduce the structural strength of the part of the conical warhead 2 provided with the prefabricated grooves 5. After the conical warhead 2 hits the glass window, the conical warhead 2 will automatically separate along the prefabricated grooves 5, and its aerodynamics will change. The remaining warhead will not continue to fly in a straight line, but will quickly turn its flight direction and fall to the ground, ensuring that the window-breaking bullet will not cause secondary damage when it enters the room. In addition, the method of using a rocket engine 3 to provide flight power for the window-breaking bullet, compared with the traditional method of sending the window-breaking bullet through the ejection system on the drone, the propulsion speed of the window-breaking bullet is faster, and the window-breaking bullet is less affected by the external environment after leaving the drone. The window-breaking bullet can hit the glass window with a faster flight speed, greater impact force and more accurate impact position, which improves the window-breaking reliability of the window-breaking bullet.

[0033] In this embodiment, a concave cavity is provided inside the conical bullet 2, and the prefabricated groove 5 is arranged on the inner wall of the conical bullet 2 corresponding to the concave cavity. In a preferred implementation of this embodiment, the concave cavity is a conical cavity, and the prefabricated groove 5 extends from the pointed end of the conical cavity to the open end of the conical cavity. Three prefabricated grooves 5 are evenly spaced around the inner wall of the conical cavity, and the groove width of the prefabricated grooves 5 gradually increases from the tip of the conical cavity to the opening of the conical cavity, and one end of the three prefabricated grooves 5 converges on the inner wall of the conical bullet 2 corresponding to the pointed end of the conical cavity. The prefabricated groove 5 extends from the pointed end of the conical cavity to the open end of the conical cavity, and the structural design in which the groove width gradually increases can make the conical bullet 2 automatically separate better along the direction of the prefabricated groove 5 after being hit.

[0034] In this embodiment, the front end of the shell 1 is provided with a groove 6 which is recessed from the end surface where the shell 1 is connected to the conical warhead 2 toward the inside of the shell 1. Preferably, the groove 6 is conical. With the arrangement of the groove 6 at the front end of the shell 1, after the conical warhead 2 hits the glass window and breaks and decomposes, the groove 6 at the front end of the shell 1 is affected by aerodynamic forces. The direction of the resultant force F1 of the aerodynamic forces acting on the groove 6 is directed to the tail of the shell 1. The shell 1 will reduce its flight speed after being affected by the resultant force F1. In addition, the lateral force F2 of the aerodynamic forces acting on the groove 6 will cause the shell 1 to turn around. No matter which direction it turns around, the shell 1 will fall to the ground under the action of gravity, avoiding secondary damage caused by the shell 1 continuing to fly in a straight line into the room.

[0035] In this embodiment, a plurality of tail wings 4 are circumferentially arranged on the outer wall of the rocket engine 3. The plurality of tail wings 4 can improve the stability of the window-breaking bullet during flight, thereby improving the accuracy of the impact position of the window-breaking bullet hitting the glass window.

[0036] In summary, the window-breaking bullet carried by the drone provided by the embodiment of the present invention has three prefabricated grooves 5 arranged on the inner wall of the conical bullet 2 of the window-breaking bullet, which can reduce the structural strength of the part of the conical bullet 2 provided with the prefabricated grooves 5. After the conical bullet 2 hits the glass window, the conical bullet 2 will automatically separate along the prefabricated grooves 5, and its aerodynamics will change. The remaining bullet body will not continue to fly in a straight line, but will quickly change its flight direction and fall to the ground, ensuring that the window-breaking bullet will not cause secondary damage when it enters the room. Moreover, the method of using a rocket engine 3 to provide flight power for the window-breaking bullet is compared with the traditional method of sending the window-breaking bullet through the ejection system on the drone. The propulsion speed of the window-breaking bullet is faster, and the window-breaking bullet is less affected by the external environment after leaving the drone. The window-breaking bullet can hit the glass window with a faster flight speed, greater impact force and more accurate impact position, which improves the window-breaking reliability of the window-breaking bullet. In addition, window-breaking bombs are carried on drones. When it is necessary to break a window to extinguish a fire, the window-breaking bombs will fly with the drone to the vicinity of the fire point and be fired after aiming. Since the drone can approach the burning glass windows at close range, the accuracy of the window-breaking bombs is improved.

[0037] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A window-breaking bullet carried by an unmanned aerial vehicle, characterized in that: The invention comprises a shell (1) and a conical bullet (2) connected to the front end of the shell (1), wherein the conical bullet (2) is made of a metal material; at least two prefabricated grooves (5) are provided on the inner wall of the conical bullet (2); a concave cavity is provided inside the conical bullet (2), and the prefabricated groove (5) is arranged on the inner wall of the conical bullet (2) corresponding to the concave cavity; the concave cavity is a conical cavity, and the prefabricated groove (5) extends from the pointed end of the conical cavity to the open end of the conical cavity.

2. The window-breaking bullet carried by an unmanned aerial vehicle according to claim 1, characterized in that: There are three prefabricated grooves (5) which are evenly spaced around the inner wall of the conical cavity.

3. The window-breaking bullet carried by an unmanned aerial vehicle according to claim 2, characterized in that: One end of the three prefabricated grooves (5) converges on the inner wall of the conical bullet (2) corresponding to the pointed end of the conical cavity.

4. The window-breaking bullet carried by an unmanned aerial vehicle according to claim 3, characterized in that: The width of the slot of the prefabricated slot (5) gradually increases from the tip close to the conical cavity to the opening of the conical cavity.

5. The window-breaking bullet carried by an unmanned aerial vehicle according to claim 1, characterized in that: The front end of the shell (1) is provided with a groove (6) which is recessed from the end surface where the shell (1) is connected to the conical bullet (2) toward the inside of the shell (1).

6. The window-breaking bullet carried by an unmanned aerial vehicle according to claim 5, characterized in that: The groove (6) is tapered.

7. The window-breaking bullet carried by an unmanned aerial vehicle according to claim 1, characterized in that: The rear end of the shell (1) is connected to a rocket engine (3) for providing flying power for the window-breaking bomb.

8. The window-breaking bullet carried by an unmanned aerial vehicle according to claim 7, characterized in that: A plurality of tail wings (4) are arranged circumferentially on the outer peripheral wall of the rocket engine (3).

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