Locking mechanism of unmanned aerial vehicle-mounted auxiliary fire extinguishing device

Abstract

The utility model relates to the technical field of unmanned aerial vehicle fire extinguishing devices, in particular to a locking mechanism of an unmanned aerial vehicle-mounted auxiliary fire extinguishing device. Comprising a lock pin base, an inner threaded hole is formed in the lock pin base, a locking pin is installed in the inner threaded hole in a matched mode through threads, the upper end of the locking pin is fixedly connected with a rotary handle, a positioning ring protruding downwards is arranged on the lower end face of the lock pin base, hanging lugs are arranged on the two sides of the lock pin base, and a detachable cover plate is installed on the upper end face of the lock pin base. The locking pin is inserted into the cover plate in a penetrating mode, and the lower end of the locking pin is inserted into the center of the positioning ring in a penetrating mode. The mechanism is purely mechanically and manually operated, and is simple to operate and reliable to use.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle (UAV) fire extinguishing devices, and particularly relates to a locking mechanism for an auxiliary UAV-mounted fire extinguishing device. Background Technique

[0002] In recent years, with the acceleration of the urbanization process across the country, row upon row of high-rise buildings have become one of the symbols of urban modernization. At present, 619,000 high-rise buildings have been built and put into use in China, and 6,457 super high-rise buildings over 100 meters. According to the statistical data previously released by the Fire Department of the Ministry of Public Security, in the past 10 years, a total of 31,000 high-rise building fires have occurred across the country, with 474 deaths and direct property losses of 1.56 billion yuan. Compared with the rapid development of high-rise building design technology and development situation, the research and application of high-rise fire fighting and rescue technology are relatively backward, and the fire fighting and rescue problems are becoming more and more prominent. Expert analysis shows that the current limiting factors for high-rise building fire fighting mainly focus on the lifting height limit of lifting vehicles, the climbing ability limit of firefighters, the climbing path limit, etc. High-rise building fire fighting and rescue is a recognized worldwide problem, and there is no fire fighting and rescue means in the outdoor space of high-rise buildings over 100 meters.

[0003] In recent years, with the rise of UAVs, scientific research teams in various countries are also developing UAV equipment for high-rise building fire fighting. At present, the most interesting high-rise building fire fighting equipment for the fire department is the fire fighting UAV. By equipping the UAV with special fire extinguishing bombs, it is possible to quickly and accurately extinguish the fire that occurs in high-rise buildings. However, there are certain safety hazards in the storage, transportation and use of existing UAV fire extinguishing bombs. The main manifestations are that accidental collisions during transportation may trigger the launch device of the fire extinguishing bomb; during storage, changes in environmental temperature and humidity will affect the effectiveness of the fire extinguishing bomb; during use, there is a lack of misoperation filtering mechanism, and misoperation accidents are likely to occur.

[0004] Generally, the cartridge-type launch device of military aircraft is commonly adapted to the airborne launch rack by a slider, and an electromechanical fuse is used to lock and unlock the missile. The design requirements for such launch devices are extremely high. Due to the existence of electricity and pyrotechnics, its working reliability is greatly affected, and it belongs to the field of pyrotechnic control, and the cost is high, which restricts its civilian use range. Summary of the Invention

[0005] In view of the above technical problems, the purpose of the utility model is to provide a safe and reliable locking mechanism for an auxiliary UAV-mounted fire extinguishing device. This mechanism is installed on the launch device of the fire extinguishing bomb, and reliably locks the fire extinguishing bomb in the launch device during the transportation of the fire extinguishing bomb; before the use of the fire extinguishing bomb, the operator can manually and conveniently unlock it on the ground, so that the fire extinguishing bomb has the launch condition.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows.

[0007] An unlocking mechanism of an unmanned aerial vehicle (UAV)-borne auxiliary fire extinguishing device according to the present utility model includes a locking pin seat. An internal threaded hole is provided on the locking pin seat. A locking pin is installed in the internal threaded hole by means of threaded engagement. The upper end of the locking pin is fixedly connected to a rotating handle. A positioning ring protruding downward is provided on the lower end surface of the locking pin seat. Hanging ears are provided on both sides of the locking pin seat. A detachable cover plate is installed on the upper end surface of the locking pin seat. The locking pin is inserted through the cover plate, and the lower end of the locking pin is inserted through the center of the positioning ring.

[0008] With this solution, the mechanism is installed on the launching device of the fire extinguishing bomb. During the transportation of the fire extinguishing bomb, the fire extinguishing bomb in the launching device is reliably locked. Before the fire extinguishing bomb is used, the operator can manually and conveniently unlock it on the ground, enabling the fire extinguishing bomb to be in a launchable condition.

[0009] Preferably, the locking pin seat has a rectangular column structure. The cover plate is a rectangular plate structure adapted to the upper end surface of the locking pin seat. The locking pin includes a threaded section adapted to the internal threaded hole, an upper extension section fixedly connected to the upper end of the threaded section, and a lower extension section fixedly connected to the lower end of the threaded section. The threaded section, the upper extension section, and the lower extension section are coaxially arranged. The rotating handle is fixedly connected to the upper end of the upper extension section. The lower extension section is inserted through the center of the positioning ring.

[0010] With this solution, the mechanism has a reasonable structure, high reliability, and is convenient for processing and manufacturing. The upper extension section of the locking pin cooperates with the middle circular hole of the cover plate to provide a guiding cylinder for the movement of the locking pin. At the same time, it can prevent sundries such as sand and dust from entering the threaded section of the cavity of the locking pin seat, affecting the normal movement of the locking pin. The threaded section matches the internal threaded hole provided on the locking pin seat. Rotating the locking pin can make the locking pin move axially along the internal threaded hole.

[0011] Preferably, the rotating handle has a long strip-shaped and flat structure.

[0012] With this solution, the working state of the locking pin can be intuitively judged through the length direction of the rotating handle.

[0013] Preferably, the hanging ear is a U-shaped groove structure with its inner side wall fixedly connected to the side surface of the locking pin seat.

[0014] With this solution, the locking pin seat can be conveniently fixedly connected to the outer wall of the fire extinguishing bomb launching tube.

[0015] The technical effects of the present utility model are reflected in the following aspects:

[0016] (1) The present utility model does not involve requirements in aspects such as electricity and pyrotechnics. Therefore, the application scope of the unlocking mechanism of the present invention can be greatly expanded.

[0017] (2) The utility model can realize the locking and unlocking of the fire extinguishing bomb by rotating the rotation direction of the rotating handle, which belongs to pure mechanical manual operation, with simple operation and reliable use.

[0018] (3) Through the combined action of the locking seat and the cover plate, the utility model restricts the axial movement distance of the locking pin, avoiding damage to the bomb body caused by the locking pin being inserted too deep into the bomb body, and also avoiding the locking pin being screwed out of the cavity of the locking seat due to unlocking, which can greatly improve the safety protection of the product during use. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the use state of an embodiment of the utility model.

[0020] Figure 2 It is a schematic structural diagram of the locking mechanism in the locked state.

[0021] Figure 3 It is a schematic structural diagram of the locking mechanism in the unlocked state.

[0022] Figure 4 It is an enlarged schematic structural diagram of the locking seat and the locking pin.

[0023] Figure 5 It is a schematic structural diagram of the locking pin. Detailed Description of the Preferred Embodiment

[0024] The following specifically describes the present utility model in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made. These all belong to the protection scope of the present utility model. The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments:

[0025] As Figures 1-3 shown, the locking mechanism of an unmanned aerial vehicle (UAV) - borne auxiliary fire extinguishing device described in the present utility model includes a locking pin seat 113, the locking pin seat 113 is in a rectangular columnar structure, an internal threaded hole is provided on the locking pin seat 113, a locking pin 202 is installed in the internal threaded hole through thread fit, the upper end of the locking pin 202 is fixedly connected to a rotating handle 201, and the rotating handle 201 is in a long strip - shaped cross - shaped structure. By rotating the rotating handle 201 around the axis, the locking pin 202 moves axially, and the lower end of the locking pin 202 extends out of the locking pin seat 113 to realize the locking or unlocking of the bomb body of the fire extinguishing bomb.

[0026] As Figure 4 、 Figure 5As shown in the figure, a positioning ring 205 protruding downward is provided on the lower end face of the lock pin seat 113. Hanging ears 204 are provided on both sides of the lock pin seat 113. A detachable cover plate 123 is installed on the upper end face of the lock pin seat 113. The locking pin 202 is inserted through the cover plate 123, and the lower end of the locking pin 202 is inserted through the center of the positioning ring 205. The hanging ear 204 is a U-shaped groove structure with its inner side wall fixedly connected to the side surface of the lock pin seat 113.

[0027] As Figure 1 shown, during use, the locking mechanism is fixedly installed on the outer wall of the fire extinguishing bomb launcher 101 through the lock pin seat 113. A through hole 209 adapted to the positioning ring 205 is provided on the outer wall of the fire extinguishing bomb launcher 101. The positioning ring 205 at the lower end of the lock pin seat 113 is installed in the through hole 209, so that the lower end face of the lock pin seat 113 is in close contact with the outer wall of the fire extinguishing bomb launcher 101. Then, by winding fiberglass around the fire extinguishing bomb launcher 101, the fiberglass is wound around the hanging ears 204 to press and fix the lock pin seat 113 on the outer wall of the fire extinguishing bomb launcher 101. This can avoid damaging the airtight performance of the fire extinguishing bomb launcher 101 by using punched screws for connection. Of course, on the premise of ensuring the airtight performance, holes can also be drilled in the hanging ears 204 of the lock pin seat 113 and fixed to the fire extinguishing bomb launcher 101 with screws.

[0028] During the storage and transportation of the fire extinguishing bomb, the locking pin 202 in the locking mechanism is in a locked state. The lower end of the locking pin 202 passes through the through hole 209 on the fire extinguishing bomb launcher 101 and extends into the inner cavity of the launcher, and is stuck in the lock hole 312 on the fire extinguishing bomb body 302 to reliably lock the fire extinguishing bomb in the launcher and prevent the fire extinguishing bomb from freely moving in the launcher 101, which may affect its performance and product integrity. Before the fire extinguishing bomb is launched, by rotating the handle 201 to rotate the locking pin 202, the locking pin 202 can move axially, retract the locking pin 202 from the lock hole 312 of the fire extinguishing bomb body and retract it into the lock pin seat, so as to unlock the bomb body in the launcher.

[0029] The cover plate 123 is a rectangular plate structure adapted to the upper end face of the lock pin seat 113. Four M3 threaded holes are provided at the four corners of the upper end face of the lock pin seat 113 for docking with the four counterbored holes at the four corners of the cover plate 123, and the cover plate 123 is connected to the lock pin seat 113 with four M3 screws.

[0030] As Figure 5As shown, the locking pin 202 includes a threaded section 212 adapted to the internal threaded hole, an upper extension section 222 fixedly connected to the upper end of the threaded section 212, and a lower extension section 232 fixedly connected to the lower end of the threaded section 212. The threaded section 212, the upper extension section 222, and the lower extension section 232 are coaxially arranged. The rotating handle 201 is fixedly connected to the upper end of the upper extension section 222, and the lower extension section 232 is inserted through the center of the positioning ring 205.

[0031] The upper extension section 222 of the locking pin 202 cooperates with the middle circular hole of the cover plate 123, providing a guiding cylinder for the movement of the locking pin 202. At the same time, it can prevent sundries such as sand and dust from entering the threaded section of the cavity of the lock pin seat 113, affecting the normal movement of the locking pin 202. The threaded section matches the internal threaded hole provided on the lock pin seat, and rotating the locking pin can make the locking pin move axially along the internal threaded hole.

[0032] In this embodiment, all parts are made by conventional machining of metal materials. In order to adapt to different environments, after the parts are processed, surface treatments such as rust prevention and mildew prevention are adopted to meet the environmental adaptability requirements such as mildew, salt spray, damp heat, and long-term storage.

Claims

1. A locking mechanism for an auxiliary fire extinguishing device carried by an unmanned aerial vehicle, comprising a locking pin seat (113), characterized in that: An internal threaded hole is provided on the lock pin seat (113), a locking pin (202) is installed in the internal threaded hole by threaded engagement, the upper end of the locking pin (202) is fixedly connected to the rotary handle (201), a downwardly protruding positioning ring (205) is provided on the lower end surface of the lock pin seat (113), hanging ears (204) are provided on both sides of the lock pin seat (113), a detachable cover plate (123) is installed on the upper end surface of the lock pin seat (113), the locking pin (202) is inserted through the cover plate (123), and the lower end of the locking pin (202) is inserted through the center of the positioning ring (205).

2. The locking mechanism of the auxiliary fire extinguishing device mounted on a drone according to claim 1, characterized in that: The lock pin seat (113) is a rectangular columnar structure, the cover plate (123) is a rectangular plate-shaped structure adapted to the upper end surface of the lock pin seat (113), the locking pin (202) comprises a threaded section (212) adapted to the internal threaded hole, an upper extension section (222) fixedly connected to the upper end of the threaded section (212), and a lower extension section (232) fixedly connected to the lower end of the threaded section (212), the threaded section (212), the upper extension section (222), and the lower extension section (232) are coaxially arranged, the rotary handle (201) is fixedly connected to the upper end of the upper extension section (222), and the lower extension section (232) is inserted through the center of the positioning ring (205).

3. The locking mechanism of the auxiliary fire extinguishing device mounted on a drone according to claim 1 or 2, characterized in that: The rotating handle (201) is a long straight-line structure.

4. The locking mechanism of the auxiliary fire extinguishing device mounted on a drone according to claim 1 or 2, characterized in that: The hanging ear (204) is a U-shaped groove structure with an inner side wall fixedly connected to the side of the locking pin seat (113).

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