Multifunctional unmanned aerial vehicle mounting type bomb dropping mechanism
By designing a multi-functional drone-mounted bombing mechanism, a bombing method combining free fall and cannon ejection was realized, solving the problem of difficulty in hitting concealed fire sources in existing technologies, and improving the bombing accuracy and fire extinguishing efficiency of drones in complex scenarios.
Patent Information
- Application Number
- CN202423211721.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing drone bombing devices can only strike exposed fire sources vertically, making it difficult to accurately strike fire sources in complex scenarios such as inside windows or under the cover of large trees.
Design a multi-functional UAV-mounted bomb-dropping mechanism with two bomb-dropping modes: free fall and ejection from a bomb launcher. Vertical and lateral bomb-dropping can be achieved through base plate sliding and servo motor control.
It improves the bombing accuracy and fire extinguishing efficiency of firefighting drones in complex scenarios, enabling them to strike vertically and laterally obstructed fire sources.
Smart Images
Figure CN223494754U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) bombing technology, specifically to a multifunctional UAV-mounted bombing mechanism. Background Technology
[0002] With the rapid development of drone technology, various types of rotary-wing drones are widely used in commercial and military fields. Drone-mounted bomb-dropping mechanisms are suitable for aerial firefighting and rescue missions, especially in complex scenarios such as high-rise building fires and forest fires where ground-based firefighting methods are difficult to implement.
[0003] Currently, drone bombing methods mostly utilize servo motors and Velcro for low-cost mounting, achieving precise strikes against ground fires through the free-fall motion of the fire extinguishing projectiles. Specifically, after firefighters search for and identify the target, the drone flies directly above it and releases the fire extinguishing projectile by controlling the servo motor. The projectile explodes upon impact with gravity, completing the fire extinguishing process. However, in practical applications, free-fall motion is insufficient for bombing fires under concealed conditions such as inside windows or at the base of large trees, necessitating the design of an active bombing device. Existing bombing devices rely solely on the free fall of the projectile to strike the fire source, resulting in relatively simple functionality and unreliable accuracy in complex scenarios. Utility Model Content
[0004] To overcome the shortcomings of existing drone bombing devices, which can only strike exposed fire sources vertically and are difficult to strike fire sources under concealed conditions such as inside windows or at the base of large trees, this utility model provides a multi-functional drone-mounted bombing mechanism with two bombing modes: free fall and ejection from a bomb tube. It can not only strike vertically exposed fire sources, but also strike fire sources that are laterally concealed, thereby improving the fire-fighting efficiency of fire-fighting drones.
[0005] This utility model discloses a multifunctional UAV-mounted bomb-dropping mechanism, including a bomb tube, a mounting bracket for connecting to the UAV fixedly connected to the bomb tube, a trigger servo for bomb dropping provided at one end of the bomb tube, a first bomb dropping port provided at the other end of the bomb tube, and a base plate for pushing the bomb body out of the first bomb dropping port for launch slidably provided inside the bomb tube, the base plate being connected to the trigger servo via a catapult device;
[0006] It also includes a second bomb release port, which is located at the bottom of the bomb tube. A hatch is provided on the second bomb release port, one end of which is hinged to the bomb tube, and the other end of which is connected to the trigger servo motor through the bomb release device.
[0007] Preferably, the ejection device includes sliding grooves corresponding to the two sides of the ejection tube, and ejection columns are provided on both sides of the base plate, with the ejection columns slidably disposed in the sliding grooves respectively;
[0008] On each side of the slide groove on the ammunition tube, there are two tube mouth pillars at the end near the first ammunition port.
[0009] The two barrel inlet columns located on the same side of the cartridge are connected to the ejection column located on that side via an elastic device;
[0010] It also includes an upper trigger connected to the trigger servo motor. The upper trigger includes two upper trigger discs. The two upper trigger discs are rotatably connected to the cartridge tube via an upper rotating shaft. The two upper trigger discs are located on both sides of the cartridge tube. Each of the two upper trigger discs is provided with a catapult hook for connecting to the catapult column.
[0011] A rudder disk is fixedly connected to the trigger servo, and the rudder disk is connected to the upper trigger disk located on the same side of the cartridge. When the trigger servo drives the rudder disk to rotate in the forward direction, the rudder disk drives the upper trigger disk to rotate around the upper rotating shaft, and the ejection hook disengages from the ejection column.
[0012] Preferably, the elastic device is a first high-elasticity rubber band;
[0013] The first limiting column is also fixedly installed on both sides of the cartridge. When the ejection hook is connected to the ejection column, the first limiting column abuts against the ejection hook, and the first limiting column and the ejection column are located on the same side of the ejection hook.
[0014] Preferably, the two sides of the slide groove of the projectile are also provided with a buffer structure to prevent the projectile column from colliding with the end of the slide groove.
[0015] Preferably, the buffer structure is a second high-elasticity rubber band, and the two cylinder mouth columns located on the same side of the cylinder are connected by the second high-elasticity rubber band, and the two cylinder mouth columns are symmetrically arranged about the slide groove;
[0016] The nozzle posts on the same side of the cartridge are all located in the area between the two ends of the slide groove on the same side of the cartridge.
[0017] Preferably, the bomb-throwing device includes a lower trigger, which includes two lower trigger discs symmetrically arranged on both sides of the bomb tube. The lower trigger discs are rotatably connected to the bomb tube via a lower rotating shaft. Each lower trigger disc is provided with a bomb-throwing hook. The rudder disc is connected to the lower trigger disc located on the same side of the bomb tube.
[0018] The upper trigger plate and the lower trigger plate, located on the same side of the cartridge, are respectively located on both sides of the rudder plate on that side, and the ends of the upper trigger plate and the lower trigger plate that are close to each other are connected by a spring;
[0019] The hatch is hinged to the bomb tube at one end and is located near the first bomb release port. Opening posts are fixed on both sides of the hatch at the end away from the first bomb release port. Two bomb release hooks are connected to the two opening posts respectively.
[0020] When the servo motor is triggered, it drives the servo disc to rotate in the opposite direction. The servo disc drives the lower trigger disc to rotate around the lower shaft, and the bomb release hook disengages from the opening column.
[0021] Preferably, a second limiting post is provided on both sides of the bomb barrel. When the bomb hook is connected to the opening post, the second limiting post abuts against the bomb hook, and the second limiting post and the opening post are located on the same side of the bomb hook.
[0022] Preferably, a limit servo is also provided at the top of the cartridge, and a limit plate is fixedly connected to the limit servo, and a limit through groove is provided at the top of the cartridge;
[0023] When the limit servo drives the limit plate to rotate around the central axis of the limit servo, the limit plate rotates from the limit through groove into the cartridge to limit the projectile or rotates out of the cartridge through the limit through groove to release the projectile.
[0024] Preferably, the mounting bracket includes an arc-shaped front mounting bracket and a rear mounting bracket. The front mounting bracket is located at one end of the cartridge tube near the first ejection port, and the rear mounting bracket is located at the other end of the cartridge tube. The arc-shaped front mounting bracket and the rear mounting bracket are respectively fixedly connected to the top of the cartridge tube by screws.
[0025] Preferably, there are two trigger servos, which are symmetrically arranged on both sides of the cartridge, and the two trigger servos move synchronously.
[0026] This invention features two bomb-dropping methods: it can strike vertical fire sources through free fall and also strike lateral fire sources by ejection from the bomb launcher. The bomb-dropping device is lightweight, simple, and reliable, thus improving the fire-fighting efficiency of fire-fighting drones. Attached Figure Description
[0027] Figure 1 This is a three-dimensional schematic diagram of the present invention.
[0028] Figure 2 This is an exploded view of the component of this utility model.
[0029] Figure 3 This is a schematic diagram of the fire extinguishing mode of the projectile launcher of this utility model.
[0030] Figure 4 This is a schematic diagram of the free-fall fire extinguishing state of this utility model.
[0031] In the diagram: 1. Front pylon, 2. Rear pylon, 3. Missile launcher, 4. Floor plate, 5. Door, 6. Upper trigger, 7. Lower trigger, 8. First limit post, 9. Second limit post, 10. Trigger servo, 11. Limit servo, 12. Limit plate, 13. Steering disc, 14. Spring, 15. Servo mounting bracket, 16. Launcher post, 17. Launcher wall groove. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] This utility model discloses a multifunctional UAV-mounted bomb-dropping mechanism, including a bomb cylinder 3. A mounting bracket for connecting to a UAV is fixedly connected to the bomb cylinder 3. A trigger servo 10 for bomb dropping is provided at one end of the bomb cylinder 3, and a first bomb dropping port is provided at the other end of the bomb cylinder 3. A base plate 4 for pushing the bomb body out of the first bomb dropping port is slidably provided inside the bomb cylinder 3. The base plate 4 is connected to the trigger servo 10 through a catapult device.
[0034] It also includes a second bomb release port, which is located at the bottom of the bomb tube 3. A hatch 5 is provided to seal the second bomb release port. One end of the hatch 5 is hinged to the bomb tube 3, and the other end of the hatch 5 is connected to the trigger servo motor 10 through the bomb release device.
[0035] In one embodiment, the ejection device includes sliding grooves corresponding to the two sides of the ejection cylinder 3, and ejection columns are provided on both sides of the base plate 4, with the ejection columns slidably disposed in the sliding grooves respectively.
[0036] On each side of the slide groove on the ammunition tube 3, there are two tube mouth pillars 16 at the end near the first ammunition port.
[0037] Two barrel inlet columns 16 located on the same side of the cartridge 3 are connected to the ejection column located on that side via an elastic device;
[0038] It also includes an upper trigger 6 connected to the trigger servo motor 10. The upper trigger 6 includes two upper trigger 6 discs. The two upper trigger 6 discs are rotatably connected to the cartridge 3 via an upper rotating shaft. The two upper trigger 6 discs are located on both sides of the cartridge 3. Each of the two upper trigger 6 discs is provided with a catapult hook for connecting to the catapult column.
[0039] The trigger servo 10 is fixedly connected to a servo disk 13, which is connected to an upper trigger 6 disk located on the same side of the cartridge 3. When the trigger servo 10 drives the servo disk 13 to rotate in the forward direction, the servo disk 13 drives the upper trigger 6 disk to rotate around the upper pivot, and the ejection hook disengages from the ejection column.
[0040] The elastic device is a first high-elasticity rubber band;
[0041] The first limiting column 8 is also fixedly installed on both sides of the cartridge 3. When the ejection hook is connected to the ejection column, the first limiting column 8 abuts against the ejection hook, and the first limiting column 8 and the ejection column are located on the same side of the ejection hook.
[0042] In one embodiment, the two sides of the slide groove of the projectile 3 are also provided with a buffer structure to prevent the projectile column from colliding with the end of the slide groove.
[0043] The buffer structure is a second high-elasticity rubber band. The two cylinder mouth columns 16 located on the same side of the bullet cylinder 3 are connected by the second high-elasticity rubber band, and the two cylinder mouth columns 16 are symmetrically arranged about the slide groove.
[0044] The cylinder mouth column 16 on the same side of the cartridge 3 is located in the area between the two ends of the upper slide groove on the same side of the cartridge 3.
[0045] In one embodiment, the bomb-throwing device includes a lower trigger 7, which includes two lower trigger 7 discs symmetrically arranged on both sides of the bomb tube 3. The lower trigger 7 discs are rotatably connected to the bomb tube 3 via a lower rotating shaft. Each lower trigger 7 disc is provided with a bomb-throwing hook. The rudder disc 13 is connected to the lower trigger 7 disc located on the same side of the bomb tube 3.
[0046] The upper trigger plate and the lower trigger plate 7, located on the same side of the cartridge 3, are respectively located on both sides of the rudder plate 13 on that side, and the ends of the upper trigger plate and the lower trigger plate 7 that are close to each other are connected by a spring 14.
[0047] The hatch 5 is hinged to the bomb tube 3 at one end and is located near the first bomb release port. Opening posts are fixedly installed on both sides of the hatch 5 at the end away from the first bomb release port. Two bomb release hooks are connected to the two opening posts respectively.
[0048] When the servo motor 10 is triggered, it drives the servo disc 13 to rotate in the opposite direction. The servo disc 13 drives the lower trigger 7 to rotate around the lower shaft, and the bomb release hook disengages from the opening column.
[0049] In one embodiment, the two sides of the bomb cylinder 3 are also provided with second limiting posts 9. When the bomb hook is connected to the opening post, the second limiting posts 9 abut against the bomb hook, and the second limiting posts 9 and the opening post are located on the same side of the bomb hook.
[0050] In one embodiment, a limiting servo motor 11 is also provided on the top of the cartridge 3, and a limiting plate 12 is fixedly connected to the limiting servo motor 11, and a limiting through groove is provided on the top of the cartridge 3.
[0051] When the limit servo motor 11 drives the limit plate 12 to rotate around the central axis of the limit servo motor 11, the limit plate 12 rotates from the limit through groove and extends into the cartridge 3 to limit the projectile, or rotates out of the cartridge 3 through the limit through groove to release the projectile.
[0052] In one embodiment, the mounting bracket includes an arc-shaped front mounting bracket 1 and a rear mounting bracket 2. The front mounting bracket 1 is disposed on one end of the cartridge 3 near the first ejection port, and the rear mounting bracket 2 is disposed on the other end of the cartridge 3. The arc-shaped front mounting bracket 1 and the rear mounting bracket 2 are respectively fixedly connected to the top of the cartridge 3 by screws.
[0053] In one embodiment, two trigger servos 10 are provided, and the two trigger servos 10 are symmetrically arranged on both sides of the cartridge 3, and the two trigger servos 10 operate synchronously.
[0054] exist Figure 1 In the middle, the front pylon 1 and rear pylon 2 have annular holes below them, which are fixed to the landing gear of the rotary-wing UAV. The lower placement of the bomb canister 3 helps to improve space utilization and reduce the adverse effects of the bombing mechanism on the flight control of the rotary-wing UAV. The bomb body is a fire extinguishing bomb.
[0055] Figure 1 In the ready-to-drop state, the fire extinguishing grenade is placed in the cartridge 3 and positioned between the base plate 4 and the limiting plate 12. The limiting plate 12 is driven by a limiting servo motor 11 and is in a vertical position when ready to drop, serving to fix the fire extinguishing grenade and prevent it from shaking. The limiting servo motor 11 is fixedly installed on the top of the cartridge 3 by a servo motor fixing component 15.
[0056] Two trigger servos 10 are fixedly mounted to the tail of the ejection cartridge 3 via servo mounting brackets 15. The trigger servos 10 are fixedly connected to the rudder disc 13, which drives the rudder disc 13 to rotate 45 degrees in each direction. The rudder disc 13 makes smooth, seamless contact with the upper trigger disc 6 and the lower trigger disc 7. When the rudder disc 13 rotates upward, it drives the upper trigger disc 6 to rotate around the upper pivot, releasing the base plate 4 and triggering the ejection mechanism. At this time, the lower trigger disc 7 remains stationary under the action of the second limiting column 9. When the rudder disc 13 rotates downward, it drives the lower trigger disc 7 to rotate around the lower pivot, releasing the hatch 5 and triggering the free-fall bombing mechanism. At this time, the upper trigger disc 6 remains stationary under the action of the first limiting column 8. The upper trigger disc 6 and the lower trigger disc 7 are connected by a spring 14, which limits the movement of the triggers and ensures reliable and effective triggering. The inner wall of the cartridge 3 is provided with multiple inner wall grooves 17, and the periphery of the base plate 4 is provided with a number of protrusions corresponding to the number of inner wall grooves 17. The protrusions are correspondingly set in the inner wall grooves 17, which restricts the base plate 4 from making linear movements in the cartridge 3 and reduces the weight of the cartridge 3. There are 8 inner wall grooves 17.
[0057] The two sides of the slide groove of the projectile 3 are also provided with a buffer structure to prevent the ejection column from colliding with the end of the slide groove. A second high-elasticity rubber band for deceleration is installed between the column 16 on the same side of the cylinder opening to avoid the base plate 4 and the projectile 3 from having their service life reduced due to high-speed collision. The ejection column of the base plate 4 and the column 16 on both sides of the cylinder opening of the projectile 3 are connected by a first high-elasticity rubber band, which provides ejection kinetic energy to the base plate 4.
[0058] exist Figure 3 In this system, the fire extinguishing bomb is launched via ejection. Trigger servo 10 drives servo disc 13 to rotate upwards, causing upper trigger 6 to rotate and triggering the ejection mechanism. Upper trigger 6 releases base plate 4. Simultaneously, limit servo 11 drives limit plate 12 to rotate rapidly 90 degrees, opening the ejection channel. Base plate 4, under the action of a high-elasticity rubber band, propels the fire extinguishing bomb away from the tube with a certain initial velocity, completing the ejection. When base plate 4 reaches the tube opening post 16, it is decelerated by the buffering effect of the high-elasticity rubber band.
[0059] exist Figure 4 In this process, the fire extinguishing bomb is launched via free fall. Triggering servo 10 drives servo disc 13 to rotate downwards, causing lower trigger 7 to rotate, releasing lower hatch 5, and the fire extinguishing bomb falls freely under the influence of gravity to complete its release.
[0060] In use, the two trigger servos 10 and one limit servo 11 are all drive mechanisms, model TS90MD, with a maximum rotation angle of 180 degrees and a torque of 1.8 kg·cm. The servos are controlled by pulse signals. Power supply and control signal transmission are achieved through 3-pin servo cables. The control unit is a Pixhawk flight controller, which directly supplies power to the three servos and outputs control signals. The wireless communication module is the receiver of the Futaba remote controller, which is connected to the flight controller. Servo operation commands are uploaded via the remote controller. After receiving the signal, the flight controller outputs control signals to the servos, driving them to complete the expected actions.
[0061] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
Claims
1. A multi-functional UAV-mounted bomb-dropping mechanism, comprising a bomb cylinder, wherein a mounting bracket for attachment to a UAV is fixedly connected to the bomb cylinder, characterized in that, One end of the cartridge is provided with a trigger servo for launching projectiles, and the other end of the cartridge is provided with a first launching port. A base plate for pushing the projectile out of the first launching port is slidably disposed inside the cartridge. The base plate is connected to the trigger servo via a catapult device. It also includes a second bomb release port, which is located at the bottom of the bomb tube. A hatch is provided on the second bomb release port, one end of which is hinged to the bomb tube, and the other end of which is connected to the trigger servo motor through the bomb release device.
2. The multi-functional UAV-mounted bomb-dropping mechanism as described in claim 1, characterized in that, The ejection device includes sliding grooves corresponding to the two sides of the ejection tube, and ejection columns are provided on both sides of the base plate, with the ejection columns slidably disposed in the sliding grooves respectively. On each side of the slide groove on the ammunition tube, there are two tube mouth pillars at the end near the first ammunition port. The two barrel inlet columns located on the same side of the cartridge are connected to the ejection column located on that side via an elastic device; It also includes an upper trigger connected to the trigger servo motor. The upper trigger includes two upper trigger discs. The two upper trigger discs are rotatably connected to the cartridge tube via an upper rotating shaft. The two upper trigger discs are located on both sides of the cartridge tube. Each of the two upper trigger discs is provided with a catapult hook for connecting to the catapult column. A rudder disk is fixedly connected to the trigger servo, and the rudder disk is connected to the upper trigger disk located on the same side of the cartridge. When the trigger servo drives the rudder disk to rotate in the forward direction, the rudder disk drives the upper trigger disk to rotate around the upper rotating shaft, and the ejection hook disengages from the ejection column.
3. The multi-functional UAV-mounted bomb-dropping mechanism as described in claim 2, characterized in that, The elastic device is a first high-elasticity rubber band; The first limiting column is also fixedly installed on both sides of the cartridge. When the ejection hook is connected to the ejection column, the first limiting column abuts against the ejection hook, and the first limiting column and the ejection column are located on the same side of the ejection hook.
4. The multi-functional UAV-mounted bomb-dropping mechanism as described in claim 2, characterized in that, The two sides of the slide groove of the projectile are also provided with a buffer structure to prevent the projectile column from colliding with the end of the slide groove.
5. The multi-functional UAV-mounted bomb-dropping mechanism as described in claim 4, characterized in that, The buffer structure is a second high-elasticity rubber band. Two cylinder mouth columns located on the same side of the cylinder are connected by the second high-elasticity rubber band, and the two cylinder mouth columns are symmetrically arranged about the slide groove. The nozzle posts on the same side of the cartridge are all located in the area between the two ends of the slide groove on the same side of the cartridge.
6. The multi-functional UAV-mounted bomb-dropping mechanism as described in claim 2, characterized in that, The bomb-throwing device includes a lower trigger, which includes two lower trigger discs symmetrically arranged on both sides of the bomb tube. The lower trigger discs are rotatably connected to the bomb tube via a lower rotating shaft. Each lower trigger disc is provided with a bomb-throwing hook. The rudder disc is connected to the lower trigger disc located on the same side of the bomb tube. The upper trigger plate and the lower trigger plate, located on the same side of the cartridge, are respectively located on both sides of the rudder plate on that side, and the ends of the upper trigger plate and the lower trigger plate that are close to each other are connected by a spring; The hatch is hinged to the bomb tube at one end and is located near the first bomb release port. Opening posts are fixed on both sides of the hatch at the end away from the first bomb release port. Two bomb release hooks are connected to the two opening posts respectively. When the servo motor is triggered, it drives the servo disc to rotate in the opposite direction. The servo disc drives the lower trigger disc to rotate around the lower shaft, and the bomb release hook disengages from the opening column.
7. The multi-functional UAV-mounted bomb-dropping mechanism as described in claim 6, characterized in that, The two sides of the bomb canister are also provided with second limiting posts. When the bomb hook is connected to the opening post, the second limiting posts abut against the bomb hook, and the second limiting posts and the opening post are located on the same side of the bomb hook.
8. The multi-functional UAV-mounted bomb-dropping mechanism as described in claim 1, characterized in that, The top of the cartridge is also provided with a limit servo motor, and a limit plate is fixedly connected to the limit servo motor. A limit through groove is provided on the top of the cartridge. When the limit servo drives the limit plate to rotate around the central axis of the limit servo, the limit plate rotates from the limit through groove into the cartridge to limit the projectile or rotates out of the cartridge through the limit through groove to release the projectile.
9. The multi-functional UAV-mounted bomb-dropping mechanism as described in claim 1, characterized in that, The mounting bracket includes an arc-shaped front mounting bracket and a rear mounting bracket. The front mounting bracket is located at one end of the cartridge tube near the first ejection port, and the rear mounting bracket is located at the other end of the cartridge tube. The arc-shaped front mounting bracket and the rear mounting bracket are respectively fixedly connected to the top of the cartridge tube by screws.
10. The multi-functional UAV-mounted bomb-dropping mechanism as described in claim 1, characterized in that, The trigger servo is configured as two, which are symmetrically arranged on both sides of the cartridge tube and move synchronously.