A police firefighting drone

Abstract

This invention relates to the field of unmanned aerial vehicle (UAV) equipment technology, and discloses a police firefighting UAV, including a UAV body, a material box fixed to the bottom of the UAV body, a frame installed in the material box, and arc-shaped material storage channels fixed on opposite sides of the frame. The outlets of the two material storage channels are connected one-to-one with two discharge baffles in an intermittent feeding device. Each discharge baffle has an outlet 1 on its bottom plate, and two discharge baffles below the outlet 1 are arranged to open and close the outlet 1. The bottom surfaces of both outlet 1 are connected to a drop channel, and the two drop channels are connected and have an outlet 2 at the bottom. This invention has the following advantages and effects: multiple fire extinguishing balls can be placed in the two material storage channels, increasing the UAV's material storage capacity and improving the UAV's utilization efficiency; the intermittent feeding device can control the sequential feeding of fire extinguishing balls in the two material storage channels, ensuring that the fire extinguishing balls are fed sequentially for fire extinguishing and improving the fire extinguishing effect.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) equipment technology, and in particular to a police firefighting UAV. Background Technology

[0002] The use of drones for firefighting, as a new industrial technology, has been widely applied in various fields. In China, many fire departments have successfully used drones for fire scene reconnaissance and monitoring, and for dropping rescue supplies, with very significant results.

[0003] Currently, in the field of firefighting, fire extinguishing balls are usually mounted on drones. The drones are then used to transport the fire extinguishing balls to the fire site, aim at the target location, and release them. The fire extinguishing balls fall freely under the influence of gravity. When the fire extinguishing balls encounter open flames, the extinguishing fuse wrapped around the surface burns, which then drives the core explosion device to automatically spray dry powder, achieving automatic fire extinguishing. However, if the fire extinguishing ball deviates during its free fall and fails to accurately reach the fire source, it will not extinguish the fire. Moreover, many drones can only carry one fire extinguishing ball at a time. When the fire is large, the drones need to make multiple trips to reload the fire extinguishing ball, which greatly reduces the efficiency of firefighting. Alternatively, many drones may need to be launched for firefighting, resulting in high overall costs. Summary of the Invention

[0004] The purpose of this invention is to provide a police firefighting drone that can carry multiple fire extinguishing balls at once, greatly improving firefighting efficiency and increasing the success rate of fire extinguishing.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: It includes a drone body, characterized in that: a material box is fixed to the bottom surface of the drone body, a frame is provided in the material box, and arc-shaped material storage channels are fixed on opposite sides of the frame. The two material storage channels have outlets that are connected one-to-one with two discharge baffles in an intermittent feeding device. Each discharge baffle has an outlet 1 on its bottom plate, and two feeding baffles that open and close the outlet 1 are provided below it. The feeding baffles below the two outlets 1 are connected by a drive assembly 1, which drives the two outlets 1 to always maintain one side open and the other side closed. The bottom surfaces of both outlets 1 are connected to an inclined dropping channel. The two dropping channels are connected and have an outlet 2 at their bottom. The bottom surface of outlet 2 has two feeding baffles that open and close it. A pushing device is provided above outlet 2, which pushes a fire extinguishing ball that has slid down onto the dropping channel and ejects it from outlet 2.

[0006] By adopting the above technical solution and setting up two arc-shaped storage channels, a certain number of fire extinguishing balls can be stored, improving the storage capacity of the channels. Compared with drones that can only carry one fire extinguishing ball at a time, this greatly improves fire extinguishing efficiency. In addition, by setting up an intermittent feeding device, the fire extinguishers in the two storage channels fall one by one from the first discharge port into the bottom of the feeding channel. This ensures that the number of fire extinguishing balls in the two storage channels remains relatively consistent, so that the weight of the remaining fire extinguishing balls in the two storage channels is equal. This avoids serious tilting of one side of the material box, which would cause the drone to shake and the fire extinguishing balls to be displaced off-target, resulting in inaccurate delivery to the fire source and waste of fire extinguishing balls. It also avoids damage to the drone and losses. A pushing device is set above the second discharge port at the bottom of the feeding channel to push out the fire extinguishing balls that slide onto the second discharge port. The fire extinguishing balls are pushed with a certain force and can fall accurately to the fire source, avoiding deviation of the landing point due to external influences during the descent, thus improving the fire extinguishing effect and success rate.

[0007] A further configuration of the present invention is as follows: each of the feeding baffles has a connecting rod 1 and a connecting rod 2 hinged to both sides of its bottom surface. The two connecting rods 1 are L-shaped and mirror-shaped. The short rods of the connecting rods 1 that are close to each other are provided with meshing short teeth. The short teeth on the bottom surfaces of the two discharge ports 1 are arranged far apart. The connecting rod 2 is long and narrow. The right-angled part of the connecting rod 1 and the middle part of the connecting rod 2 are hinged to the support rod 1. The two ends of the two connecting rods 2 that are close to each other in the two discharge ports 1 are respectively hinged to the connecting rod 3. The other ends of the two connecting rods 3 are hinged to both ends of the rack 1. The rack 1 meshes with the drive gear. The drive gear is coaxially provided with a reciprocating assembly that drives the drive gear to reciprocate.

[0008] By adopting the above technical solution, when the driving gear is located at one end of the rack, the two discharge baffles near that end of the rack move closer to each other to block the discharge port. Then, when the driving gear rotates, it drives the rack to slide. The sliding of the rack pushes the connecting rod three near the driving gear closer to the connecting rod two. Since the middle of the connecting rod two is hinged to the support rod one, the connecting rod two rotates clockwise, and the angle between it and the connecting rod three decreases. The clockwise rotation of the connecting rod two further drives the connecting rod one located on the same discharge baffle to rotate clockwise. Since the connecting rods one on the two discharge baffles on the same side are meshed and mirror-image, they drive the connecting rod one on the bottom surface of the other discharge baffle on the same side to rotate counterclockwise. Finally, the two discharge baffles on the same side separate, and the corresponding discharge port one opens, allowing the fire extinguishing ball to slide smoothly from the discharge port onto the material drop channel. Simultaneously, the corresponding... On the other side, the two discharge baffles open the corresponding discharge ports one above. The short teeth on the two connecting rods one mesh. As the rack one slides, the connecting rod three on this side gradually approaches the drive gear. The connecting rod three pulls the connecting rod two, which is close to the drive gear, to rotate counterclockwise. The connecting rod one located on the bottom surface of the same discharge baffle rotates counterclockwise, driving the two meshing connecting rods one to move closer to each other, driving the two discharge baffles to move closer together and close the corresponding discharge port one. Through the sliding of the rack one, the alternating opening and closing of the two discharge ports one is completed. Thus, the two discharge ports one can discharge one fire extinguishing ball at a time. This alternation does not affect the discharge of each ball, and the balls are discharged one by one in sequence. The number of fire extinguishing balls remaining in the two storage channels can remain relatively consistent, without affecting the balance of the entire drone, further ensuring the safety of the drone and improving the fire extinguishing efficiency of the fire extinguishing balls.

[0009] A further configuration of the present invention is as follows: the reciprocating assembly includes a rotating cylinder coaxially fixed with the driving gear, a groove is provided concavely on the circumferential side of the rotating cylinder, the groove is X-shaped, a rotating ring is provided on the side of the rotating cylinder, the rotating ring is provided with a notch and a push rod extending out of the notch is connected to the center of the ring, the push rod is intermittently limited and engaged in the groove, and the rotating ring is fixedly connected to the output shaft of the motor.

[0010] By adopting the above technical solution, the motor drives the rotating ring to rotate. When the drive rod on the rotating ring extends into the slide groove, it drives the rotating cylinder, i.e., the drive gear, to rotate. The rotation of the drive gear causes the rack to slide, thus completing one feeding of the fire extinguishing ball. Since the slide groove is X-shaped, after the drive rod rotates out from the top of one inclined groove, the next drive rod will first contact the bottom of the other inclined groove, which will drive the rotating cylinder to reverse, drive the drive gear to reverse, and finally drive the rack to retract. The reciprocating sliding of the rack allows the two discharge ports to open and close alternately, ensuring the smooth feeding of a single fire extinguishing ball. The fire extinguishing balls can be continuously replenished, enabling the extinguishing of larger fires and improving fire extinguishing capabilities.

[0011] A further configuration of the present invention is as follows: the pushing device includes a push rod connected to the end of a drive rod, the drive rod being slidably connected to a sleeve, a frustum being sleeved on the drive rod inside the sleeve, the bottom surface of the frustum being close to the push rod, a vertical stop bar perpendicular to the drive rod being provided inside the sleeve, a right-angled triangular reset limiting block being provided at the top of the vertical stop bar, the inclined surface of the reset limiting block being parallel to the side surface of the frustum, a sleeve rod extending out of the sleeve being sleeved on part of the drive rod, a power rod parallel to the drive rod being connected at the bottom end of the sleeve rod, the power rod extending into the sleeve and wedge-shaped abutting against the side surface of the vertical stop bar, a spring one being sleeved on the sleeve rod outside the sleeve, the spring one driving the drive rod closer to the discharge port two, a spring two being sleeved on the drive rod between the sleeve rod and the frustum, the spring two driving the sleeve rod away from the discharge port two, a spring three being connected to the bottom of the vertical stop bar, the spring three driving the vertical stop bar closer to the drive rod.

[0012] By adopting the above technical solution, when the push rod drives a fire extinguishing ball to be ejected from the second discharge port, the drive rod is subsequently pushed away from the second discharge port. At this time, the drive rod drives the truncated cone to slide from the inclined surface of the reset limit block at the top of the vertical stop to the vertical angle side of the limit block. At this time, the first spring is compressed, and the drive rod remains stationary. Then, the sleeve is driven to approach the second discharge port. At this time, the sleeve slides inside the sleeve, compressing the second spring. When the sleeve slides, the drive rod slides towards the second discharge port. Because the drive rod extends into the sleeve and is wedge-shaped and abuts against the side of the vertical stop, Therefore, at this time, the power rod drives the vertical stop rod away from the truncated cone, and the drive rod slides towards the discharge port two under the action of spring one, and finally successfully drives the fire extinguishing ball on the discharge port two to be shot vertically towards the fire source. When the force acting on the sleeve disappears, the sleeve rod returns to the starting point under the action of spring two. This completes one firing of the fire extinguishing ball. The external force is applied to the fire extinguishing ball, which makes up for the disadvantage of the fire extinguishing ball being deflected when it falls freely under the action of gravity. This improves the accuracy of the fire extinguishing ball, avoids the waste of fire extinguishing balls, and ensures the fire extinguishing efficiency.

[0013] A further configuration of the present invention is as follows: racks two and three are arranged facing each other on the side of the drive rod and sleeve rod away from the discharge port two. Racks two and three are intermittently externally meshed with incomplete gears. A driven pulley is coaxially fixed to the incomplete gear. A belt is sleeved on the driven pulley and the drive pulley. The drive pulley is coaxially fixed to the output shaft of motor one. A drive bevel gear is also fixed on the output shaft of motor one. A driven bevel gear one is externally meshed with the drive bevel gear. A driven bevel gear two is coaxially fixed to the driven bevel gear. Driven bevel gear two and driven bevel gear three are externally meshed. A cam group in the drive assembly two that drives the material discharge baffle to move closer to or away from the driven bevel gear three is coaxially fixed to the driven bevel gear three.

[0014] By adopting the above technical solution, when the incomplete gear rotates to mesh with rack two, it drives the drive rod away from discharge port two. As the incomplete gear further rotates to mesh with rack three, it drives the sleeve rod closer to discharge port two. The incomplete gear completes a 360° rotation, which completes the injection of one fire extinguishing ball. At the same time, by setting a driven pulley and a driving pulley, motor one drives the fire extinguishing balls to be discharged one by one from discharge port two, and then they are ejected from discharge port two under the action of the pushing device. This saves costs and ensures the smoothness of the entire operation. In addition, by setting multiple reversing bevel gears, motor one drives the opening and closing of the two discharge baffles, and discharge can be completed without the use of other power, further saving costs.

[0015] A further configuration of the present invention is as follows: the cam assembly includes two coaxially fixed and mirror-arranged drive cams, the drive cams respectively engaging with connecting rods slidably connected in the slide plate, the two connecting rods being fixed parallel to two material discharge baffles, and a telescopic spring connecting the two material discharge baffles, the telescopic spring driving the two material discharge baffles to approach each other.

[0016] By adopting the above technical solution, after the drive rod completes the injection of a fire extinguishing ball, the two discharge baffles are in a state of distance, that is, the discharge port two is open. When the drive rod initially moves away from the discharge port two, the two drive cams rotate, and the connecting rod always adheres to the side of the drive cam. The distance between the two discharge baffles gradually decreases until they are closed. When the sleeve rod begins to approach the discharge port two, the drive cam rotates again to push the two connecting rods away, that is, gradually push the two discharge baffles open until the drive rod finally slides out of the sleeve, and the drive push rod ejects the fire extinguishing ball. The above connection method cleverly links the injection of the fire extinguishing ball with the opening and closing of the discharge port two, which greatly saves the amount of parts used and saves costs. By setting a sliding plate, the sliding of the two connecting rods is limited, and by setting a telescopic spring, it is ensured that the two connecting rods always adhere to the drive cam body.

[0017] A further feature of the present invention is that the discharge baffle is U-shaped and a second sliding groove is provided on the bottom plate, a baffle is slidably connected in the second sliding groove, the baffle is located between the discharge port of the storage channel and the discharge baffle, the bottom end of the baffle is hinged to one end of the fourth connecting rod, and the other end of the fourth connecting rod is hinged to the hinge point of the second connecting rod and the third connecting rod.

[0018] By adopting the above technical solution and setting a baffle, when the discharge port is opened, the baffle is located at the discharge port and discharge baffle of the storage channel, which can block the fire extinguishing ball at the discharge port of the storage channel and prevent it from sliding onto the discharge baffle and causing leakage.

[0019] A further feature of the present invention is that the storage channel is U-shaped, the storage channel gradually approaches the discharge port 2 along the direction towards its own discharge port, and the two storage channels are symmetrical end to end.

[0020] By adopting the above technical solution, the storage channel is set in a U-shape, which can ensure the stability of the fire extinguishing ball in the storage channel and prevent it from falling during the flight of the fire extinguishing ball drone. The storage channel gradually approaches the discharge port two along the direction towards its own discharge port, that is, the storage channel is set in a slightly inclined state. Then, the fire extinguishing ball on each storage channel slides towards the discharge port of the storage channel, completing the automatic feeding to the discharge port one on the discharge baffle.

[0021] A further feature of the present invention is that: a circular plate is provided at the top and bottom of the rotating cylinder, and two grooves are symmetrically arranged around the periphery of each circular plate, and the rotating ring is intermittently limited to the grooves.

[0022] By adopting the above technical solution, the grooves on the top and bottom circular plates of the rotating cylinder ensure that the rotating ring is always in contact with the rotating cylinder, thus guaranteeing the reciprocating rotation of the rotating cylinder.

[0023] The beneficial effects of this invention are as follows: Two arc-shaped storage channels can store a certain number of fire extinguishing balls, increasing the storage capacity of the channels. Compared to drones that can only carry one fire extinguishing ball at a time, this significantly improves fire extinguishing efficiency. Furthermore, by setting up an intermittent feeding device, fire extinguishers in the two storage channels fall one by one from outlet one into the bottom of the feeding channel. This ensures that the number of fire extinguishing balls in the two storage channels remains relatively consistent, resulting in a balanced weight of the remaining fire extinguishing balls. This prevents severe tilting of one side of the storage box, which could cause the drone to shake, leading to fire extinguishing ball misalignment and inaccurate delivery to the fire source, wasting fire extinguishing balls and damaging the drone. A pushing device is installed above outlet two on the bottom of the feeding channel to push out the fire extinguishing balls that have slid onto outlet two. The fire extinguishing balls, under a certain pushing force, can accurately fall to the fire source, preventing deviation in the landing point due to external influences during descent, thus improving the fire extinguishing effect and success rate. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the internal structure of the material box in this invention.

[0027] Figure 3 This is an exploded structural diagram of the material storage channel and intermittent feeding device in this invention.

[0028] Figure 4 yes Figure 3 A schematic diagram of the structure on the other side of the intermittent feeding device.

[0029] Figure 5 yes Figure 4 A schematic diagram of the bottom structure.

[0030] Figure 6 This is a schematic diagram of the connection structure between the feeding device and the discharge channel of the present invention.

[0031] Figure 7 yes Figure 6 A schematic diagram of the structure on the other side.

[0032] Figure 8 This is a schematic diagram of the connection structure between the feeding device and the cam group in this invention.

[0033] Figure 9 This is an exploded structural diagram of the various structures inside the sleeve in this invention.

[0034] In the diagram, 1. UAV body; 2. Material bin; 3. Material storage channel; 4. Discharge baffle; 5. Discharge port one; 6. Feeding baffle; 7. Drop channel; 8. Discharge port two; 9. Connecting rod one; 10. Connecting rod two; 11. Short tooth; 12. Support rod one; 13. Connecting rod three; 14. Rack one; 15. Drive gear; 16. Rotating cylinder; 17. Slide groove one; 18. Rotating ring; 19. Push rod; 20. Motor one; 21. Push rod; 22. Drive rod; 23. Sleeve; 24. Frustum; 25. Vertical stop rod; 6. Reset limit stop; 27. Sleeve rod; 28. Power rod; 29. ​​Spring 1; 30. Spring 2; 31. Spring 3; 32. Rack 2; 33. Rack 3; 34. Incomplete gear; 35. Driving bevel gear; 36. Driven bevel gear 1; 37. Driven bevel gear 2; 38. Driven bevel gear 3; 39. Drive cam; 40. Connecting rod; 41. Material discharge baffle; 42. Telescopic spring; 43. Slide groove 2; 44. Stop bar; 45. Connecting rod 4; 46. Circular plate; 47. Groove opening; 48. Frame. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] Example: A police firefighting drone, such as Figure 1-9 As shown, the device includes a drone body 1 and a discharge port 2. A material box 2 is fixed to the bottom of the drone body 1. A frame 48 is installed in the material box 2. Arc-shaped storage channels 3 are fixed to opposite sides of the frame 48. The discharge ports 2 and 2 are connected to two discharge baffles 4 in the intermittent feeding device. Each discharge baffle 4 has a discharge port 5 on its bottom plate. Below each discharge port 2 and 2, two feeding baffles 6 are installed to open and close the discharge port 5. The discharge ports 2 and 2 are connected to the discharge outlets 4. The discharge baffles 6 at the discharge port 28 are connected by a drive assembly 1. The drive assembly 1 drives the discharge ports 5 on both sides to always keep one side open and the other side closed. The bottom surfaces of the discharge ports 28 and 5 are connected to inclined drop channels 7. The drop channels 7 of the two discharge ports 28 are connected and the discharge ports 28 are set at the bottom. The bottom surfaces of the discharge ports 28 are provided with two drop baffles 41 that open and close the discharge ports 28. A pusher device is set above the discharge ports 28. The pusher device pushes the discharge ports 28 to slide down into the drop channels. Fire extinguishing balls on channel 7 are launched from outlet 28. Two arc-shaped storage channels 3 are provided to store a certain number of fire extinguishing balls, increasing the storage capacity of the channels. Compared to drones that can only carry one fire extinguishing ball at a time, this significantly improves fire extinguishing efficiency. Furthermore, by incorporating an intermittent feeding device, the fire extinguishers in the two storage channels 3 fall one by one from outlet 5 into the bottom of the feeding channel 7. This ensures that the number of fire extinguishing balls in the two storage channels 3 remains relatively consistent. Therefore, the weight of the remaining fire extinguishing balls in the two storage channels 3... To ensure the fire extinguishing balls are level and prevent severe tilting on one side of the material bin 2, which could cause the drone to shake and deviate during delivery, resulting in inaccurate placement of the fire extinguishing balls and wasted fire extinguishing balls, and also to prevent damage to the drone and losses, a pushing device is installed above the discharge port 2 8 at the bottom of the material drop channel 7. This device pushes the fire extinguishing balls that have slid onto the discharge port 2 8 of the material drop channel 7. With a certain pushing force, the fire extinguishing balls can accurately fall to the fire source, preventing deviation of the landing point due to external influences during the descent, thus improving the fire extinguishing effect and the success rate of fire extinguishing.

[0037] Furthermore, each discharge port 28 has connecting rod 19 and connecting rod 20 hinged to both sides of the bottom surface of the discharge baffle 6. The connecting rod 19 of the two discharge ports 28 is L-shaped and mirrored. The short rods of the connecting rod 19 of the two discharge ports 28 that are close to each other are provided with meshing short teeth 11. The short teeth 11 on the bottom surface of the two discharge ports 15 are far apart. The connecting rod 20 of the discharge port 28 is long and narrow. The right-angle part of the connecting rod 19 of the discharge port 28 and the middle part of the connecting rod 20 are hinged to the support rod 12. The ends of the two connecting rods 20 of the two discharge ports 15 that are close to each other are respectively hinged to connecting rod 3 13. The other end of the connecting rod 3 13 of the two discharge ports 28 is hinged to both ends of rack 14. The rack 14 of the discharge port 28 is... Meshing with the drive gear 15, the discharge port 2 8 is coaxially equipped with a reciprocating assembly that drives the drive gear 15 to reciprocate. When the drive gear 15 is located at the end of the rack 14, the two discharge baffles 6 near that end of the rack 14 move closer to each other and block the discharge port 1 5. Subsequently, when the drive gear 15 rotates, it drives the rack 14 to slide. The sliding of the rack 14 pushes the connecting rod 3 13 near the drive gear 15 closer to the connecting rod 2 10. Since the middle of the connecting rod 2 10 is hinged to the support rod 12, the angle between the connecting rod 2 10 and the connecting rod 3 13 decreases when the connecting rod 2 10 rotates clockwise. The clockwise rotation of the connecting rod 2 10 further drives the discharge baffles located on the same side. When the connecting rod 9 on the first 6 rotates clockwise, since the connecting rods 9 on the two discharge baffles 6 on the same side are meshed and mirrored, the connecting rod 9 on the bottom surface of the other discharge baffle 6 on the same side rotates counterclockwise. This ultimately drives the two discharge baffles 6 on the same side to separate, opening the corresponding discharge port 5, allowing the fire extinguishing ball to slide smoothly from the discharge port onto the discharge channel 7. Simultaneously, the two discharge baffles 6 on the opposite side open the corresponding discharge port 5 above them, and the short teeth 11 on the two connecting rods 9 mesh. As the rack 14 slides, the connecting rod 13 on that side gradually approaches the drive gear 15, pulling the connecting rod 13 closer to the drive gear 15. When rod 10 rotates counterclockwise, connecting rod 9 located on the bottom surface of the same feeding baffle 6 rotates counterclockwise, driving the two meshing connecting rods 9 to move closer together, and driving the two feeding baffles 6 to move closer together, closing the corresponding discharge port 5; through the sliding of the rack 14, the alternating opening and closing of the two discharge ports 5 is completed, so that the two discharge ports 5 can discharge one fire extinguishing ball at a time. This alternation does not affect the discharge of each ball, and the balls are discharged one by one in sequence. The number of fire extinguishing balls remaining in the two storage channels 3 can remain relatively consistent, without affecting the balance of the entire drone, further ensuring the safety of the drone and improving the fire extinguishing efficiency of the fire extinguishing balls.

[0038] Furthermore, the reciprocating assembly of the discharge port 28 includes a rotating cylinder 16 coaxially fixed with the drive gear 15. A groove 17 is recessed on the circumferential side of the rotating cylinder 16 of the discharge port 28. The groove 17 is X-shaped. A rotating ring 18 is provided on the side of the rotating cylinder 16 of the discharge port 28. The rotating ring 18 of the discharge port 28 has a notch, and a push rod 19 extending out of the notch is connected to its center. The push rod 19 of the discharge port 28 is intermittently limited and engaged in the groove 17. The rotating ring 18 of the discharge port 28 is fixedly connected to the output shaft of the motor 20. The motor 20 drives the rotating ring 18 to rotate. When the drive rod 22 on the rotating ring 18 extends into the groove 17, it can... The rotating cylinder 16, i.e., the drive gear 15, rotates. The rotation of the drive gear 15 causes the rack 14 to slide, thus completing one feeding of fire extinguishing balls. Since the chute 17 is X-shaped, after the drive rod 22 rotates out from the top of one inclined chute, the next time the drive rod 22 contacts the bottom of the other inclined chute, which drives the rotating cylinder 16 to reverse, drives the drive gear 15 to reverse, and finally drives the rack 14 to retract. The reciprocating sliding of the rack 14 realizes the alternating opening and closing of the two discharge ports 5, ensuring the smooth feeding of individual fire extinguishing balls. The fire extinguishing balls can be continuously replenished, enabling the extinguishing of larger fire areas and improving fire extinguishing capabilities.

[0039] Furthermore, the material pushing device of the second discharge port 8 includes a push rod 21, which is connected to the end of the drive rod 22. The drive rod 22 is slidably connected in the sleeve 23. A frustum 24 is sleeved on the drive rod 22 inside the sleeve 23. The bottom surface of the frustum 24 is close to the push rod 21. A vertical stop 25 perpendicular to the drive rod 22 is also provided inside the sleeve 23. A right-angled triangular reset limit block 26 is provided at the top of the vertical stop 25. The inclined surface of the reset limit block 26 is parallel to the side surface of the frustum 24. Part of the drive rod 24 of the second discharge port 8... 2. The sleeve is provided with a sleeve rod 27 extending out of the sleeve 23. The bottom end of the sleeve rod 27 of the discharge port 28 is also connected to a power rod 28 parallel to the drive rod 22. The power rod 28 of the discharge port 28 extends into the sleeve 23 and fits against the side of the vertical stop rod 25 in a wedge shape. The sleeve rod 27 of the discharge port 28 located outside the sleeve 23 is provided with a spring 29. The spring 29 of the discharge port 28 drives the drive rod 22 to move closer to the discharge port 28. The drive rod 22 of the discharge port 28 between the sleeve rod 27 and the truncated cone 24 is provided with a spring 30. The spring 30 of the discharge port 28 drives the sleeve rod 27 away from the discharge port 28. The bottom of the vertical stop rod 25 of the discharge port 28 is connected to a spring 31. When spring 31 drives vertical stop 25 near the discharge port 28, and push rod 21 drives a fire extinguishing ball to be ejected from discharge port 28, drive rod 22 is subsequently pushed away from discharge port 28. At this time, drive rod 22 drives truncated cone 24 to slide from the inclined surface of reset limit block 26 at the top of vertical stop 25 to the vertical angle side of limit block. At this time, spring 1 29 is compressed, and drive rod 22 remains stationary. Then sleeve rod 27 is driven near discharge port 28. At this time, sleeve rod 27 slides inside sleeve 23, compressing spring 20. When sleeve rod 27 slides, drive power rod 28 slides toward discharge port 28. Since power rod 28 extends into sleeve 23, 3. It fits and abuts against the side of the vertical stop bar 25 in a wedge shape. So at this time, the power rod 28 drives the vertical stop bar 25 away from the truncated cone 24. Then, the drive rod 22 slides towards the discharge port 28 under the force of the spring 1 29. Finally, it successfully drives the fire extinguishing ball on the discharge port 28 to shoot vertically towards the fire source. After the force on the sleeve rod 27 disappears, the sleeve rod 27 returns to the starting point under the force of the spring 2 30. This completes one fire extinguishing ball injection. The external force is applied to the fire extinguishing ball, which makes up for the disadvantage of the fire extinguishing ball deflecting when it falls freely under the action of gravity. This improves the accuracy of the fire extinguishing ball, avoids the waste of fire extinguishing balls, and ensures the fire extinguishing efficiency.

[0040] Furthermore, on the side of the discharge port 28 away from the drive rod 22 and sleeve rod 27, there are two opposing racks 32 and 33. The racks 32 and 33 intermittently mesh with the incomplete gear 34. The incomplete gear 34 is coaxially fixed with a driven pulley. A belt is sleeved on the driven pulley and the drive pulley of the discharge port 28. The drive pulley of the discharge port 28 is coaxially fixed with the output shaft of the motor 20. A drive bevel gear 35 is also fixed on the output shaft of the motor 20. The drive bevel gear 35 meshes with a driven bevel gear 36. The driven bevel gear 36 is coaxially fixed with a driven bevel gear 37. The driven bevel gear 37 meshes with a driven bevel gear 38. The driven bevel gear 38 is coaxially fixed with a drive drop baffle. When the cam group in the drive assembly 2, which is close to or far away from the discharge port 2, rotates incompletely, the gear 34 rotates to mesh with rack 2 32, driving the drive rod 22 away from the discharge port 2 8. As the gear 34 rotates further to mesh with rack 3 33, the drive sleeve 27 moves closer to the discharge port 2 8. The gear 34 completes a 360° rotation, which completes the injection of one fire extinguishing ball. At the same time, by setting a driven pulley and a driving pulley, the motor 1 20 simultaneously drives the fire extinguishing balls to be discharged one by one from the discharge port 1 5 to the discharge port 2 8, and then ejected from the discharge port 2 8 under the action of the pushing device, saving costs and ensuring the smoothness of the entire operation. In addition, by setting multiple reversing bevel gears, the motor 1 20 drives the two dropping baffles 41 to open and close, and the discharge can be completed without the use of other power, further saving costs.

[0041] Furthermore, the discharge port 28 cam assembly includes two coaxially fixed and mirror-arranged drive cams 39. The drive cams 39 of the discharge port 28 are respectively engaged with connecting rods 40 slidably connected in the slide plate. The two connecting rods 40 of the discharge port 28 are parallelly fixed to two discharge baffles 41. A telescopic spring 42 connects the two discharge baffles 41 of the discharge port 28. The telescopic spring 42 of the discharge port 28 drives the two discharge baffles 41 to move closer together. When the drive rod 22 completes the injection of a fire extinguishing ball, the two discharge baffles 41 are in a state of separation, i.e., the discharge port 28 is open. When the drive rod 22 initially moves away from the discharge port 28, the two drive cams 39 rotate, and the connecting rods 40 initially... Finally, the material is attached to the side of the drive cam 39, and the distance between the two discharge baffles 41 gradually decreases until they are closed. When the sleeve rod 27 begins to approach the discharge port 28, the drive cam 39 rotates again to push the two connecting rods 40 away, that is, to gradually push the two discharge baffles 6 open until the drive rod 22 finally slides out of the sleeve 23, and the drive push rod 21 shoots the fire extinguishing ball out. The above connection method cleverly links the shooting of the fire extinguishing ball with the opening and closing of the discharge port 28, which greatly saves the amount of parts used and saves costs. By setting a sliding plate, the sliding of the two connecting rods 40 is limited, and by setting a telescopic spring 42, it is ensured that the two connecting rods 40 are always in contact with the drive cam 39.

[0042] Furthermore, the discharge port 28 discharge baffle 4 is U-shaped and has a sliding groove 2 43 on its bottom plate. A baffle 44 is slidably connected in the sliding groove 2 43 of the discharge port 28. The baffle 44 of the discharge port 28 is located between the discharge port of the storage channel 3 and the discharge baffle 4. The bottom end of the baffle 44 of the discharge port 28 is hinged to one end of the connecting rod 45. The other end of the connecting rod 45 of the discharge port 28 is hinged to the hinge point of the connecting rod 2 10 and the connecting rod 3 13. By setting the baffle 44, when the discharge port 1 5 is opened, the baffle 44 is located between the discharge port of the storage channel 3 and the discharge baffle 4, which can block the fire extinguishing ball at the discharge port of the storage channel 3 and prevent it from sliding onto the discharge baffle 4 and causing leakage.

[0043] Furthermore, the storage channel 3 of the second discharge port 8 is U-shaped. The storage channel 3 of the second discharge port 8 gradually approaches the second discharge port 8 along the direction towards its own discharge port. The two storage channels 3 of the second discharge port 8 are symmetrical end to end. The storage channel 3 is set in a U-shape to ensure the stability of the fire extinguishing ball in the storage channel 3 and to prevent it from falling during the flight of the fire extinguishing ball drone. The storage channel 3 gradually approaches the second discharge port 8 along the direction towards its own discharge port, that is, the storage channel 3 is set in a slightly inclined state. Then, the fire extinguishing ball on each storage channel 3 slides towards the discharge port of the storage channel 3 to complete the automatic feeding to the discharge port 5 on the discharge baffle 4.

[0044] Furthermore, the top and bottom of the rotating cylinder 16 at the discharge port 28 are provided with circular plates 46. Each circular plate 46 at the discharge port 28 has two symmetrically arranged grooves 47 around its circumference. The rotating ring 18 at the discharge port 28 is intermittently limited to the grooves 47. The grooves 47 on the circular plates 46 at the top and bottom of the rotating cylinder 16 and the rotating ring 18 are always in contact with the rotating cylinder 16 to ensure the reciprocating rotation of the rotating cylinder 16.

Claims

1. A police firefighting drone, comprising a drone body (1), characterized in that: The bottom surface of the UAV body (1) is fixed with a material box (2). A frame (48) is installed in the material box (2). Arc-shaped storage channels (3) are fixed on opposite sides of the frame (48). The outlets of the two storage channels (3) are connected one-to-one with the two discharge baffles (4) in the feeding device. Each discharge baffle (4) has an outlet (5) on its bottom plate. Below the outlet (5) are two feeding baffles (6) that open and close the outlet (5). The feeding baffles (6) below the two outlets (5) are connected by a drive assembly. The drive assembly drives the two outlets (5) to always keep one side open and the other side closed. The bottom surfaces of the two outlets (5) are connected to an inclined... The two discharge channels (7) are connected and have discharge ports (8) at the bottom. The bottom surface of the discharge ports (8) is provided with two discharge baffles (41) to open and close the discharge ports (8). A pushing device is provided above the discharge ports (8). The pushing device pushes the fire extinguishing ball that slides down onto the discharge channel (7) and shoots it out from the discharge ports (8). Each discharge baffle (6) has a connecting rod (9) and a connecting rod (10) hinged on both sides of its bottom surface. The two connecting rods (9) are L-shaped and mirrored. The short rods of the connecting rods (9) that are close to each other are provided with meshing short teeth (11). The short teeth (11) on the bottom surface of the two discharge ports (5) are far apart. The connecting rod (10) is long and narrow. The right-angled part of the first connecting rod (9) and the middle part of the second connecting rod (10) are hinged to the first supporting rod (12). The ends of the two adjacent second connecting rods (10) in the two discharge ports (5) are respectively hinged to the third connecting rod (13). The other ends of the two third connecting rods (13) are hinged to the two ends of the rack (14). The rack (14) meshes with the drive gear (15). The drive gear (15) is coaxially provided with a reciprocating assembly that drives the drive gear (15) to rotate back and forth. The pushing device includes a push rod (21). The push rod (21) is connected to the end of the drive rod (22). The drive rod (22) is slidably connected in the sleeve (23). A frustum (24) is sleeved on the drive rod (22) located in the sleeve (23). The bottom surface of the truncated cone (24) is close to the push rod (21). The sleeve (23) is also provided with a vertical stop rod (25) perpendicular to the drive rod (22). The top part of the vertical stop rod (25) is provided with a right-angled triangular reset limit block (26). The inclined surface of the reset limit block (26) is parallel to the side surface of the truncated cone (24). Part of the drive rod (22) is provided with a sleeve rod (27) extending out of the sleeve (23). The bottom end of the sleeve rod (27) is also connected to a power rod (28) parallel to the drive rod (22). The power rod (28) extends into the sleeve (23) and is wedge-shaped against the side surface of the vertical stop rod (25). The sleeve rod (27) located outside the sleeve (23) is provided with a spring (29).The first spring (29) drives the drive rod (22) closer to the discharge port (8). A second spring (30) is fitted over the drive rod (22) between the sleeve rod (27) and the frustum (24). The second spring (30) drives the sleeve rod (27) away from the discharge port (8). A third spring (31) is connected to the bottom of the vertical stop rod (25). The third spring (31) drives the vertical stop rod (25) closer to the drive rod (22).

2. The police firefighting drone according to claim 1, characterized in that: The reciprocating assembly includes a rotating cylinder (16) coaxially fixed with the drive gear (15). The rotating cylinder (16) has a groove (17) recessed on its circumferential side. The groove (17) is X-shaped. A rotating ring (18) is provided on the side of the rotating cylinder (16). The rotating ring (18) has a notch and a push rod (19) extending out of the notch is connected at the center. The push rod (19) is intermittently limited and locked in the groove (17). The rotating ring (18) is fixedly connected to the output shaft of the motor (20).

3. A police firefighting drone according to claim 2, characterized in that: On the side of the drive rod (22) and sleeve rod (27) away from the discharge port (8), there are racks two (32) and rack three (33) facing each other. The racks two (32) and rack three (33) are intermittently externally meshed with the incomplete gear (34). The incomplete gear (34) is coaxially fixed with a driven pulley. The driven pulley and the drive pulley are covered with a belt. The drive pulley is coaxially fixed with the output shaft of the motor (20). The output shaft of the motor (20) is also fixed with a drive bevel gear (35). The drive bevel gear (35) is externally meshed with a driven bevel gear one (36). The driven bevel gear one (36) is coaxially fixed with a driven bevel gear two (37). The driven bevel gear two (37) is externally meshed with a driven bevel gear three (38). The driven bevel gear three (38) is coaxially fixed with a cam group in the drive assembly two that drives the material discharge baffle (41) to approach or move away.

4. A police firefighting drone according to claim 3, characterized in that: The cam assembly includes two coaxially fixed and mirror-arranged drive cams (39), which are respectively attached to connecting rods (40) slidably connected in the slide plate. The two connecting rods (40) are fixed in parallel on two material drop baffles (41), and a telescopic spring (42) is connected between the two material drop baffles (41). The telescopic spring (42) drives the two material drop baffles (41) to move closer together.

5. A police firefighting drone according to claim 4, characterized in that: The discharge baffle (4) is U-shaped and has a sliding groove (43) on its bottom plate. A baffle (44) is slidably connected in the sliding groove (43). The baffle (44) is located between the discharge port of the storage channel (3) and the discharge baffle (4). The bottom end of the baffle (44) is hinged to one end of the connecting rod (45), and the other end of the connecting rod (45) is hinged to the hinge point of the connecting rod (10) and the connecting rod (13).

6. A police firefighting drone according to claim 5, characterized in that: The storage channel (3) is U-shaped, and the storage channel (3) gradually approaches the discharge port (8) in the direction of its own discharge port. The two storage channels (3) are symmetrical from end to end.

7. A police firefighting drone according to claim 6, characterized in that: The rotating cylinder (16) is provided with circular plates (46) at the top and bottom. Each circular plate (46) has two grooves (47) symmetrically arranged around its periphery. The rotating ring (18) is intermittently rotated within the grooves (47).

Images