An on-vehicle UAV takeoff and landing platform for a fire truck

Abstract

A fire truck-mounted drone take-off and landing platform relates to the application field of fire-fighting drones and is used to improve the take-off and landing flexibility of fire-fighting drones. The fire truck-mounted drone take-off and landing platform includes three parts: a hydraulic lifting connection device, a drone take-off and landing slide, and a drone take-off and landing portal platform. The vehicle-mounted drone take-off and landing platform can meet the vehicle-mounted needs of drones. The fire truck reverses or drives forward into the drone take-off and landing portal platform, the hydraulic lifting connection device on the fire truck is locked and connected with the connecting plate of the drone take-off and landing slide, the fire-fighting drone lands on the drone take-off and landing plate, the landing gear falls into the V-shaped positioning groove of the drone take-off and landing plate, the locking strip drives the gear and rack to wedge the landing gear through the locking drive motor, so that the drone can go to the distant fire scene with the fire truck; for nearby fires, the fire-fighting drone can be unlocked from the drone take-off and landing slide of the drone take-off and landing portal platform and take off on the spot, giving full play to the flexibility of drones in participating in firefighting tasks.

Description

Technical Field

[0001] The present invention relates to the field of drone applications, particularly to the field of drone applications for firefighting. Background Art

[0002] Publication (Announcement) Number: CN206125458U, Utility Model Name: An Unmanned Aerial Vehicle (UAV) Takeoff and Landing Platform, discloses an UAV takeoff and landing platform, including a cargo storage compartment and a base plate. The base plate is disposed on top of the cargo storage compartment. The base plate is provided with a cargo entrance communicating with the cargo storage compartment. At each of the four corners of the base plate, there is an unfolding plate, and the unfolding plate is connected to the base plate through a rotating shaft. The UAV takeoff and landing platform provided by the present utility model can increase the area of the UAV takeoff and landing platform by unfolding the unfolding plate, improving the stability of the UAV landing. By folding up the unfolding plate, the area of the UAV takeoff and landing platform can be reduced, saving space.

[0003] Chinese Patent Application: CN111439387A, Invention Name: A Vehicle-Mounted UAV Takeoff and Landing Platform, discloses a vehicle-mounted UAV takeoff and landing platform for assisting the landing of a UAV. The vehicle-mounted UAV takeoff and landing platform can be fixed on a movable vehicle body. It is characterized in that it includes: a main body, at least two positioning rails disposed on the main body, two limiting blocks disposed at both ends of the main body near the extending direction of each positioning rail, and at least one limiting block slidably connected to the same positioning rail. The limiting block can slide along the extending direction of the positioning rail; the positioning rail is used for clamping the tripod; the main body includes a top plate and a bottom plate disposed opposite to each other. The positioning rail is a concave groove recessed along the surface of the top plate away from the bottom plate. The positioning rail is provided as a trapezoidal groove to facilitate the clamping of the supporting rod in the positioning rail and at the same time facilitate the takeoff of the UAV fixed in the positioning rail; in order to enable the positioning rail to position the supporting rod well, at least part of the positioning rail abuts against the supporting rod. The platform of the present invention performs tripod fixing and charging operations on it to prepare for continuous flight.

[0004] Publication (Announcement) Number: CN210149578U, Utility Model Name: An Unmanned Aerial Vehicle (UAV) Takeoff and Landing Platform. An unmanned aerial vehicle takeoff and landing platform is disclosed, which includes a main body frame. A panel is arranged above the main body frame, and a top cover support is arranged on each of the left and right sides of the main body frame; A top cover is installed above the top cover support; The top cover support is connected to a horizontal drive device, and the top cover support is driven by the horizontal drive device to move horizontally, driving the top cover to open or close to expose or cover the panel; The top cover support is connected to a first lifting drive device, and the top cover support is driven by the first lifting drive device to lift vertically, driving the opened top cover to descend to a height flush with the panel; Or, the panel is connected to a second lifting drive device, and the panel is driven by the second lifting drive device to rise vertically to a height flush with the opened top cover. The UAV takeoff and landing platform in this embodiment avoids the problem of frequent occurrence of UAV rollover caused by objects protruding above the panel of the UAV takeoff and landing platform, and improves the takeoff and landing success rate of the UAV.

[0005] Publication (Announcement) Number: CN209870768U, Utility Model Name: A Vehicle-Mounted Multi-Rotor UAV Takeoff and Landing Platform. A vehicle-mounted multi-rotor UAV takeoff and landing platform is disclosed, which includes a UAV, a takeoff and landing platform, and a landing gear assembly. The UAV fixes the landing gear assembly on the takeoff and landing platform through a push rod mechanism, and the push rod mechanisms are symmetrically distributed along the length and width directions of the takeoff and landing platform; The push rod mechanism includes a push rod, a slider, and a slide rail. The slide rail is fixed on the takeoff and landing platform, a slider is arranged on the slide rail, the slider is fixed to the push rod, and a drive mechanism is also fixed to the bottom of the slider; The landing gear assembly can be embedded in the push rod. This utility model can automatically adjust the position of the UAV landing on the takeoff and landing platform to the central position and lock it, greatly improving the automation level of the system, effectively reducing the UAV deployment / retrieval time, and improving work efficiency; At the same time, the UAV is fixed at the central position of the takeoff and landing platform, which can effectively reduce the storage volume and improve the utilization rate of the carriage.

[0006] In the currently disclosed technologies, either a fixed UAV takeoff and landing platform is designed, which cannot be maneuverably connected to a fire truck. For a fire situation at a relatively far distance, taking off from the original place and flying to the fire scene will consume a large amount of the UAV's own energy, so that there is not enough energy to perform fire fighting tasks at the fire scene and it cannot quickly go out on a fire alarm with the fire truck; Or it is a design for the takeoff and landing platform of a small four-rotor UAV, and there is no design for a vehicle-mounted mobile takeoff and landing platform for fire fighting UAVs. A fire truck-mounted UAV takeoff and landing platform of the present invention designs a UAV takeoff and landing slide that can be automatically connected to the fire truck, and the fire fighting UAV can go out on a fire alarm with the fire truck. For a fire situation nearby, the fire fighting UAV can take off on the UAV takeoff and landing platform on the spot to perform fire fighting tasks, so as to meet the fire fighting operation tasks at far and near distances and give full play to the use performance of the UAV in the fire fighting field. Summary of the Invention

[0007] The purpose of the present invention is to design a fire truck mounted UAV take-off and landing platform, which is used to improve the take-off and landing flexibility of fire-fighting UAVs. The fire truck mounted UAV take-off and landing platform includes three parts: a hydraulic lifting connection device, a UAV take-off and landing slide, and a UAV take-off and landing portal platform. The vehicle-mounted UAV take-off and landing platform of the present invention can meet the long-distance and short-distance take-off and landing requirements of fire-fighting UAVs. When the fire truck reverses or drives forward into the UAV take-off and landing portal platform, the hydraulic lifting connection device on the fire truck can be locked and connected with the connecting plate of the UAV take-off and landing slide, and the fire-fighting UAV lands on the UAV take-off and landing plate, and the landing gear falls into the V-shaped positioning groove of the UAV take-off and landing plate. The locking strip drives the gear and rack to wedge the landing gear through the locking drive motor, so that the UAV can go to the distant fire scene with the fire truck; for the nearby fire, the fire-fighting UAV can be unlocked from the UAV take-off and landing slide of the UAV take-off and landing portal platform and take off on the spot to go to the fire scene. Give full play to the flexibility of UAVs in participating in firefighting tasks.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A fire truck mounted UAV take-off and landing platform, comprising a fire truck, a hydraulic lifting connection device, a UAV take-off and landing slide, a UAV take-off and landing doorway platform, a UAV, and a UAV landing gear; wherein the hydraulic lifting connection device comprises a hydraulic lifting connection device bottom plate, a hydraulic lifting connection device top plate, a support seat, a rotating hole connecting pin, a claw-shaped locking block, a push hole connecting pin, a push rod, a connector drive motor, a hydraulic cylinder, a hydraulic motor, an oil pipe, and an oil tank; the hydraulic lifting connection device bottom plate is welded to the roof of the fire truck, and the hydraulic cylinders are four hydraulic cylinders, which are evenly installed between the hydraulic lifting connection device top plate and the hydraulic lifting connection device bottom plate , the hydraulic motor is connected to the hydraulic cylinder and the oil tank respectively through the connecting oil pipe; the support seat is welded on the top plate of the hydraulic lifting connection device, the connector drive motor is installed with a small bevel gear, and a large bevel gear is installed at the bottom of the transmission screw. The connector drive motor drives the transmission screw to rotate through the bevel gear transmission, and the transmission nut is screwed into the transmission screw through the transmission nut thread and the transmission screw thread. The four push rod connecting columns of the transmission nut are respectively installed with push rods, and the other end of the push rod is connected to the claw-shaped locking block, and the claw-shaped locking block is connected to the claw-shaped locking block support seat. The transmission nut moves up and down, driving the claw-shaped locking block to rotate, so that the four claw-shaped locking blocks are opened and retracted;

[0010] The UAV take-off and landing slide includes a locking groove, a V-shaped positioning groove, a UAV take-off and landing plate, a connecting plate, a Z-shaped plate, a landing gear locking strip, a locking drive motor, a pinion, a large gear, a wedge-shaped locking block, a guide edge, a welding edge, a groove, a rack, a locking pin, a connecting cavity, a fan-shaped connecting groove, and a guide column;

[0011] The UAV take-off and landing portal includes a U-shaped guide groove, reinforcing ribs, observation windows, and rollers; when the fire truck reverses or drives forward into the UAV take-off and landing portal platform, the claw-shaped locking block is locked and connected in the fan-shaped connection groove; two guide columns are fixedly connected between the UAV take-off and landing plate and the connecting plate of the UAV take-off and landing slide. There is a U-shaped guide groove on the UAV take-off and landing portal platform, and the guide columns can slide into the UAV take-off and landing portal platform along the U-shaped guide groove and the rollers; two Z-shaped plates are welded in the middle of the UAV take-off and landing plate, and the guiding edges of the two Z-shaped plates face each other. An undercarriage locking strip is installed on each guiding edge. The locking drive motor drives the undercarriage locking strip to slide along the guiding edge through gear transmission. The wedge block on the undercarriage locking strip wedges the undercarriage through the locking groove of the V-shaped positioning groove; observation windows are installed on both sides of the UAV take-off and landing portal platform for observing the connection of the UAV take-off and landing slide.

[0012] The UAV take-off and landing portal platform is vertically placed on the ground, and two reinforcing ribs are welded on both sides to increase the strength of the UAV take-off and landing portal platform.

[0013] In some embodiments, the claw-shaped locking block is fan-shaped, and there is a semi-circular locking groove at one end of the claw-shaped locking block.

[0014] In some embodiments, there is a V-shaped positioning groove on the UAV take-off and landing plate of the UAV take-off and landing slide; there is a locking groove inside the V-shaped positioning groove.

[0015] In some embodiments, there is a connection cavity at the bottom of the connecting plate of the UAV take-off and landing slide. The connection cavity has a fan-shaped connection groove; the fan-shaped connection grooves are distributed along the inner wall of the connection cavity, and the angle between each fan-shaped connection groove is 90 degrees; the fan-shaped connection groove has a locking pin.

[0016] In some embodiments, four claw-shaped locking block supports are evenly arranged on the support base.

[0017] In some embodiments, the support base is provided with a U-shaped groove.

[0018] The beneficial effects of the present invention are:

[0019] A fire truck-mounted UAV take-off and landing platform of the present invention comprises three parts: a hydraulic lifting connection device, a UAV take-off and landing slide, and a UAV take-off and landing portal platform. The UAV take-off and landing portal platform can be placed in a wide field. The hydraulic lifting connection device is welded on the top of the fire truck. The UAV landing gear is wedged in a V-shaped positioning groove by a wedge-shaped locking block, so that the UAV is fixed and locked on the UAV take-off and landing slide. When a fire occurs at a distant location, the fire truck can reverse or drive forward into the UAV take-off and landing portal platform. The hydraulic lifting connection device welded on the top of the fire truck is locked and connected with the connecting plate of the UAV take-off and landing slide. The observation window can observe the connection between the hydraulic lifting connection device and the UAV take-off and landing slide to ensure accurate connection. The UAV can go to the fire site with the fire truck to perform firefighting tasks. For a fire that occurs at a close distance, the UAV landing gear can be quickly unlocked by driving the landing gear locking strip through a locking drive motor, and the UAV can take off on the spot from the UAV take-off and landing portal platform to go to the close fire site to perform firefighting tasks. The two drone take-off and landing methods can improve the flexibility of drones in performing firefighting tasks, greatly shorten the time it takes for drones to reach the fire site, and greatly reduce the drone's own energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall layout of the present invention;

[0021] Figure 2 It is a schematic diagram of the hydraulic lifting connection device of the present invention;

[0022] Figure 3 This is a schematic diagram of the take-off and landing platform of the UAV of the present invention;

[0023] Figure 4 This is a schematic diagram of the UAV take-off and landing portal platform of the present invention;

[0024] Figure 5 It is a connection principle diagram of the hydraulic lifting connection device of the present invention;

[0025] Figure 6 It is a front view of the support base of the present invention;

[0026] Figure 7 It is a cross-sectional view of the support seat CC of the present invention;

[0027] Figure 8 It is a cross-sectional view of the support seat AA of the present invention;

[0028] Figure 9 A top view of the support base of the present invention;

[0029] Figure 10 It is a right side view of the support base of the present invention;

[0030] Figure 11 It is a front view of the transmission screw of the present invention;

[0031] Figure 12 Rotary view of the drive screw of the present invention;

[0032] Figure 13 Schematic diagram of the push rod of the present invention;

[0033] Figure 14 B-B sectional view of the drive screw of the present invention

[0034] Figure 15 Front view of the drive nut of the present invention;

[0035] Figure 16 D-D sectional view of the drive nut of the present invention;

[0036] Figure 17 Schematic diagram of the claw-shaped locking block of the present invention;

[0037] Figure 18 Front view of the claw-shaped locking block of the present invention;

[0038] Figure 19 Left view of the claw-shaped locking block of the present invention;

[0039] Figure 20 Schematic diagram of the Z-shaped plate of the present invention;

[0040] Figure 21 Front view of the Z-shaped plate of the present invention;

[0041] Figure 22 F-F sectional view of the Z-shaped plate of the present invention;

[0042] Figure 23 Schematic diagram of the landing gear locking bar of the present invention;

[0043] Figure 24 Left view of the landing gear locking bar of the present invention;

[0044] Figure 25 G-G sectional view of the landing gear locking bar of the present invention;

[0045] Figure 26 Schematic diagram of the connecting plate of the present invention;

[0046] Figure 27 Front view of the connecting plate of the present invention;

[0047] Figure 28 H-H sectional view of the connecting plate of the present invention;

[0048] Figure 29 Bottom view of the connecting plate of the present invention;

[0049] Figure 30Cross-sectional view I-I of the connecting plate of the present invention;

[0050] Figure 31 Front view of the connection between the hydraulic lifting connection device and the connecting plate of the present invention;

[0051] Figure 32 Cross-sectional view J-J of the connection between the hydraulic lifting connection device and the connecting plate of the present invention.

[0052] In the attached drawings:

[0053] 100. Fire truck; 200. Hydraulic lifting connection device; 201. Bottom plate of the hydraulic lifting connection device; 202. Hydraulic cylinder; 203. Top plate of the hydraulic lifting connection device; 204. Support seat; 205. Rotating hole connecting pin; 206. Claw-shaped locking block; 207. Pushing hole connecting pin; 208. Pushing rod; 209. Connector drive motor; 210. Hydraulic motor; 211. Oil pipe; 212. Support seat for the claw-shaped locking block; 213. Rotating hole of the claw-shaped locking block; 214. U-shaped groove; 215. Transmission screw; 216. Bearing retaining ring; 217. Thread of the transmission screw; 218. Bearing seat; 219. Small bevel gear; 220. Transmission nut; 221. Push rod connecting column; 222. Push rod hole; 223. Thread of the transmission nut; 224. Large bevel gear; 225. Rotating hole; 226. Pushing hole; 227. Semi-circular locking groove; 228. Pushing rod connecting hole; 229. Top hole of the support seat; 230. Fuel tank; 231 Thrust cylindrical roller bearing; 300. UAV takeoff and landing slide; 301. Locking groove; 302. V-shaped positioning groove; 303. UAV takeoff and landing plate; 304. Connecting plate; 305. Z-shaped plate; 306. Landing gear locking strip; 307. Locking drive motor; 308. Small gear; 309. Large gear; 310. Wedge-shaped locking block; 311. Guide edge; 312. Welding edge; 313 Groove; 314. Rack; 315. Locking pin; 316. Connection cavity; 317. Sector-shaped connection groove; 318. Guide post; 400. UAV; 401. UAV landing gear; 500. UAV takeoff and landing door platform; 501. U-shaped guide groove; 502. Reinforcing rib; 503. Observation window; 504. Roller. Detailed implementation manners

[0054] The following further describes the present invention with reference to the attached drawings and specific examples.

[0055] A UAV takeoff and landing platform mounted on a fire truck according to the present invention, as shown in the attached Figures 1 to 32As shown, which includes a fire truck 100, a hydraulic lifting connection device 200, a bottom plate 201 of the hydraulic lifting connection device, a hydraulic cylinder 202, a top plate 203 of the hydraulic lifting connection device, a support seat 204, a rotating hole connecting pin 205, a claw-shaped locking block 206, a pushing hole connecting pin 207, a push rod 208, a connector drive motor 209, a hydraulic motor 210, a hydraulic pipe 211, a support seat 212 for the claw-shaped locking block, a rotating hole 213 for the claw-shaped locking block, a U-shaped groove 214, a transmission screw rod 215, a bearing retaining ring 216, a thread 217 of the transmission screw rod, a bearing seat 218, a small bevel gear 219, a transmission nut 220, a push rod connecting column 221, a push rod hole 222, a thread 223 of the transmission nut, a large bevel gear 224, a rotating hole 225, a pushing hole 226, a semi-circular locking groove 227, a connecting hole 228 for the push rod, a top hole 229 of the support seat, a fuel tank 230, a thrust cylindrical roller bearing 231, a drone takeoff and landing slide 300, a locking groove 301, a V-shaped positioning groove 302, a drone takeoff and landing plate 303, a connecting plate 304, a Z-shaped plate 305, a landing gear locking strip 306, a locking drive motor 307, a small gear 308, a large gear 309, a wedge-shaped locking block 310, a guiding edge 311, a welding edge 312, a groove 313, a rack 314, a locking pin 315, a connecting cavity 316, a fan-shaped connecting groove 317, a guiding column 318, a drone 400, a drone landing gear 401, a drone takeoff and landing door opening platform 500, a U-shaped guiding groove 501, a reinforcing rib 502, an observation window 503, and a roller 504.

[0056] Assembly relationship

[0057] A vehicle-mounted drone takeoff and landing platform for a fire truck includes three parts: a hydraulic lifting connection device 200, a drone takeoff and landing slide 300, and a drone takeoff and landing door opening platform 500.

[0058] The hydraulic lifting connection device 200 includes a hydraulic lifting connection device bottom plate 201, a hydraulic cylinder 202, a hydraulic lifting connection device top plate 203, a support seat 204, a rotating hole connection pin 205, a claw-shaped locking block 206, a pushing hole connection pin 207, a push rod 208, a connector drive motor 209, a hydraulic motor 210, an oil pipe 211, and a fuel tank 230. The hydraulic lifting connection device bottom plate 201 is welded to the top of the fire truck 100. Four hydraulic cylinders 202 are evenly and fixedly installed between the hydraulic lifting connection device bottom plate 201 and the hydraulic lifting connection device top plate 203. The hydraulic cylinder 202 is connected to the hydraulic motor 210, the hydraulic motor 210 is connected to the oil pipe 211, and the oil pipe 211 is connected to the fuel tank 230. The four hydraulic cylinders 202 are connected in parallel. The support seat 204 is welded to the middle position of the hydraulic lifting connection device top plate 203. The transmission nut thread 223 of the transmission nut 220 is screwed into the transmission screw thread 217 of the transmission screw 215. There are four push rod connection columns 221 on the transmission nut 220. A push rod 208 is connected to each push rod connection column 221. There are push rod connection holes 228 of the same size at both ends of the push rod 208. The push rod connection holes 228 are connected to the push rod holes 222 with connection pins. The push rod 208 is connected to the pushing holes 226 of the claw-shaped locking block 206 in the same way. The rotating hole 225 of the claw-shaped locking block 206 is connected to the claw-shaped locking block support seat 212. There is a claw-shaped locking block rotation hole 213 on the support seat 212. The claw-shaped locking block rotation hole 213 is connected to the rotating hole 225 of the claw-shaped locking block 206. There is a bearing retaining ring 216 on the transmission screw 215. The transmission screw 215 is vertically placed into the support seat 204. One end with the bearing retaining ring 216 passes through the bearing seat 218. A thrust cylindrical roller bearing 231 is installed in the bearing seat 218. The inner hole of the thrust cylindrical roller bearing 231 has an interference fit with one end of the transmission screw 215 with the bearing retaining ring 216. The outer circle of the thrust cylindrical roller bearing 231 has an interference fit with the bearing seat 218. The transmission screw 215 is installed with a large bevel gear 224. The connector drive motor 209 is fixed to the U-shaped groove 214. A small bevel gear 219 is installed on the connector drive motor 209. The large bevel gear 224 meshes with the small bevel gear 219.

[0059] The UAV takeoff and landing slide 300 has a connecting plate 304 and a UAV takeoff and landing plate 303. Two guide columns 318 are welded between the connecting plate 304 and the UAV takeoff and landing plate 303. The two guide columns 318 are in a straight line and can slide parallel into the U-shaped guide groove 501 of the UAV takeoff and landing portal platform 500. There are two parallel V-shaped positioning grooves 302 on the UAV takeoff and landing plate 303. The distance between the two V-shaped positioning grooves 302 is the span of the UAV landing gear 401. There is a locking groove 301 inside each V-shaped positioning groove 302. Two Z-shaped plates 305 are welded at the middle position of the UAV takeoff and landing plate 303. The welding edge 312 is welded on the UAV takeoff and landing plate 303. The guiding edges 311 of the two Z-shaped plates 305 face each other. A landing gear locking bar 306 is installed on each guiding edge 311. The groove 313 is clamped into the guiding edge 311 so that the rack 314 can slide relative to the guiding edge 311. One end of the rack 314 is welded with a wedge-shaped locking block 310. A locking drive motor 307 is fixedly connected between the two Z-shaped plates 305. A small gear 308 is installed on the locking drive motor 307. The two racks 314 are meshed with a large gear 309. The small gear 308 is meshed with the large gear 309. The locking drive motor 307 drives the two racks 314 to slide along the Z-shaped plate 305 towards the locking groove 301 through a transmission relationship, driving the wedge-shaped locking block 310 to wedge and lock the UAV landing gear 401 that falls into the V-shaped positioning groove 302, thereby locking and fixing the UAV 400. There is a connecting cavity 316 at the bottom of the connecting plate 304. There are four sector-shaped connecting grooves 317 on the inner wall of the connecting cavity 316. The width of the sector-shaped connecting groove 317 is the same as the width of the claw-shaped locking block 206. The angle between each two sector-shaped connecting grooves 317 is 90 degrees. There is a locking pin 315 in the sector-shaped connecting groove 317. The locking pin 315 can be stuck in the semi-circular locking groove 227 of the claw-shaped locking block 206.

[0060] The UAV takeoff and landing portal platform 500 is transparent from front to back and has a U-shaped guide groove 501 at the top. There are 10 rollers 504 on each side of the U-shaped guide groove 501. The UAV takeoff and landing slide 300 can slide into the UAV takeoff and landing portal platform 500 through the U-shaped guide groove 501 and the rollers 504. There are reinforcing ribs 502 on both sides of the UAV takeoff and landing portal platform 500 to improve the strength of the UAV takeoff and landing portal platform 500. There is an observation window 503 on the left and right sides of the portal, through which the connection between the hydraulic lifting connection device 200 and the connecting plate 304 can be observed.

[0061] The working principle of the present invention is as follows:

[0062] The drone take-off and landing portal platform 500 is transparent from front to back. A fire truck can drive through the portal, which is fixed on a relatively wide square or a site conducive to the take-off of drones. There are U-shaped guide grooves 501 and rollers 504 on the top of the drone take-off and landing portal platform 500. Two guide columns 318 are welded between the connecting plate 304 and the drone take-off and landing board 303 of the drone take-off and landing slide 300. In the normal state, the drone take-off and landing slide 300 slides into the drone take-off and landing portal platform 500 through the U-shaped guide grooves 501 and rollers 504. The drone 400 stops on the drone take-off and landing board 303 of the drone take-off and landing slide 300, and the drone landing gear 401 lands in two V-shaped positioning grooves 302. Two Z-shaped plates 305 are welded at the middle position of the drone take-off and landing board 303, and the welding edge 312 is welded on the drone take-off and landing board 303. The guiding edges 311 of the two Z-shaped plates 305 face each other. A landing gear locking bar 306 is installed on each guiding edge 311, and the groove 313 is clamped into the guiding edge 311 so that the rack 314 can slide relatively along the guiding edge 311. One end of the rack 314 is welded with a wedge-shaped locking block 310. A locking drive motor 307 is fixedly connected between the two Z-shaped plates 305. A small gear 308 is installed on the locking drive motor 307. The two racks 314 are meshed with a large gear 309. The small gear 308 is meshed with the large gear 309. The locking drive motor 307 drives the two racks 314 to slide along the Z-shaped plate 305 towards the locking groove 301 through the transmission relationship, driving the wedge-shaped locking block 310 to wedge and lock the drone landing gear 401 that lands in the V-shaped positioning groove 302, thereby locking and fixing the drone 400.

[0063] When a fire breaks out at a nearby location, the locking drive motor 307 rotates in reverse, driving the two racks 314 to slide reversely along the Z-shaped plate 305 through the transmission relationship, driving the wedge-shaped locking block 310 to unlock the drone landing gear 401, and the drone 400 can take off on the spot to perform fire-fighting tasks.

[0064] The hydraulic lifting connection device bottom plate 201 of the hydraulic lifting connection device 200 is welded to the top of the fire truck 100. Four hydraulic cylinders 202 are installed between the hydraulic lifting connection device top plate 203 and the hydraulic lifting connection device bottom plate 201. The hydraulic motor 210 is sequentially connected to the oil pipe 211, the fuel tank 230, and the hydraulic cylinder 202. The support seat 204 is welded to the hydraulic lifting connection device top plate 203. The thread 223 of the drive nut of the drive nut 220 and the thread 217 of the drive screw are screwed into the drive screw 215. There are four push rod connection columns 221 on the drive nut 220. A push rod 208 is connected to each push rod connection column 221. There are push rod connection holes 228 of the same size at both ends of the push rod 208. The moving rod connection hole 228 is connected to the push rod hole 222 with a connecting pin. The push rod 208 is connected to the push hole 226 of the claw-shaped locking block 206 in the same way. The rotation hole 225 of the claw-shaped locking block 206 is connected to the claw-shaped locking block support seat 212. There is a claw-shaped locking block rotation hole 213 on the support seat 212. The claw-shaped locking block rotation hole 213 is connected to the rotation hole 225 of the claw-shaped locking block 206. There is a bearing retaining ring 216 on the drive screw 215. The drive screw 215 is vertically placed into the support seat 204. One end with the bearing retaining ring 216 passes through the bearing seat 218. A thrust cylindrical roller bearing 231 is installed in the bearing seat 218. The inner hole of the thrust cylindrical roller bearing 231 has an interference fit with one end of the drive screw 215 with the bearing retaining ring 216. The outer circle of the thrust cylindrical roller bearing 231 has an interference fit with the bearing seat 218. A large bevel gear 224 is installed on the drive screw 215. The connector drive motor 209 is fixed to the U-shaped groove 214. A small bevel gear 219 is installed on the connector drive motor 209. The large bevel gear 224 meshes with the small bevel gear 219. When there is a fire at a relatively long distance, the fire truck 100 can reverse or drive forward into the drone takeoff and landing portal platform 500, aligning the hydraulic lifting connection device 200 with the connection cavity 316. The hydraulic motor 210 works to drive the four hydraulic cylinders 202 to rise, causing the hydraulic lifting connection device 200 to extend into the connection cavity 316 of the connecting plate 304. The connector drive motor 209 is started, and through the transmission relationship, the four claw-shaped locking blocks 206 are opened and extend into the four sector-shaped connection grooves 317 respectively. The semi-circular locking groove 227 of the claw-shaped locking block 206 is stuck on the locking pin 315, making the connection more stable. The drone takeoff and landing slide 300 is successfully connected to the fire truck 100. The fire truck 100 drives away from the drone takeoff and landing portal platform 500 in the forward direction. The drone takeoff and landing slide 300 slides out from the U-shaped guiding groove 501. The drone 400 is locked on the drone takeoff and landing slide 300 and goes to the fire location at a relatively long distance with the fire truck 100, saving the energy consumption of the drone itself. When arriving at the fire location, the drone can take off directly on the drone takeoff and landing slide 300 connected to the fire truck 100 to perform fire-fighting tasks.

[0065] The above is the specific embodiment of the present invention and the technical principles applied. Any changes made according to the concept of the present invention, as long as the resulting functional effects do not exceed the spirit covered by the specification and the drawings, are within the protection scope of the present invention patent.

Claims

1. An on-vehicle drone takeoff and landing platform for a fire truck, comprising a fire truck, a hydraulic lifting connection device, a drone takeoff and landing slide, a drone takeoff and landing door opening platform, a drone, and a drone landing gear, characterized in that: The described hydraulic lifting connection device includes a hydraulic lifting connection device bottom plate, a hydraulic lifting connection device top plate, a support seat, a rotating hole connecting pin, a claw-shaped locking block, a pushing hole connecting pin, a push rod, a connector drive motor, a hydraulic cylinder, a hydraulic motor, a fuel pipe, and a fuel tank. The hydraulic lifting connection device bottom plate is welded to the roof of the fire truck. The hydraulic cylinders are four hydraulic cylinders, and the four hydraulic cylinders are evenly installed between the hydraulic lifting connection device top plate and the hydraulic lifting connection device bottom plate. The hydraulic motor is connected to the hydraulic cylinder and the fuel tank respectively through connecting fuel pipes. The support seat is welded to the hydraulic lifting connection device top plate. The connector drive motor is equipped with a small bevel gear, and a large bevel gear is installed at the bottom of the transmission screw. The connector drive motor drives the transmission screw to rotate through bevel gear transmission. The transmission nut is screwed into the transmission screw through the cooperation of the transmission nut thread and the transmission screw thread. There are four push rod connecting columns on the transmission nut. The push rod connecting columns are installed with push rods. The other end of the push rod is connected to the claw-shaped locking block. The claw-shaped locking block is connected to the claw-shaped locking block support seat. The transmission nut moves up and down, driving the claw-shaped locking block to rotate, so that the four claw-shaped locking blocks open and close. The UAV takeoff and landing door opening includes a U-shaped guide groove, a reinforcing rib, an observation window, and a roller. The fire truck reverses or drives forward into the UAV takeoff and landing door opening platform, and the claw-shaped locking block is locked and connected in the fan-shaped connection groove. The UAV takeoff and landing sliding table includes a locking groove, a V-shaped positioning groove, a UAV takeoff and landing plate, a connecting plate, a Z-shaped plate, a landing gear locking strip, a locking drive motor, a small gear, a large gear, a wedge-shaped locking block, a guiding edge, a welding edge, a groove, a rack, a locking pin, a connecting cavity, a fan-shaped connection groove, and a guiding column. Two guiding columns are fixedly connected between the UAV takeoff and landing plate and the connecting plate of the UAV takeoff and landing sliding table. There is a U-shaped guide groove on the UAV takeoff and landing door opening platform, and the guiding column can slide into the UAV takeoff and landing door opening platform along the U-shaped guide groove and the roller. Two Z-shaped plates are welded in the middle of the UAV takeoff and landing plate. The guiding edges of the two Z-shaped plates are opposite to each other. A landing gear locking strip is installed on each guiding edge. The locking drive motor drives the landing gear locking strip to slide along the guiding edge through gear transmission. The wedge-shaped block on the landing gear locking strip is wedged into the landing gear through the locking groove of the V-shaped positioning groove. An observation window is installed on each side of the UAV takeoff and landing door opening platform for observing the connection situation of the UAV takeoff and landing sliding table. The UAV takeoff and landing door opening platform is vertically placed on the ground, and two reinforcing ribs are welded on each side to increase the strength of the UAV takeoff and landing door opening platform.

2. The vehicle-mounted UAV takeoff and landing platform for a fire truck according to claim 1, characterized in that: The described claw-shaped locking block is fan-shaped, and one end of the claw-shaped locking block has a semi-circular locking groove.

3. The on-vehicle UAV takeoff and landing platform for a fire truck according to claim 1, wherein: There is a V-shaped positioning groove on the UAV takeoff and landing plate of the UAV takeoff and landing sliding table, and a locking groove is inside the V-shaped positioning groove.

4. The vehicle-mounted UAV take-off and landing platform for a fire truck according to claim 1, characterized in that: There is a connecting cavity at the bottom of the connecting plate of the UAV takeoff and landing sliding table, and the connecting cavity has a fan-shaped connection groove; the fan-shaped connection grooves are distributed along the inner wall of the connecting cavity, and the angle between each of the fan-shaped connection grooves is 90 degrees; the fan-shaped connection groove has a locking pin.

5. The on-vehicle UAV takeoff and landing platform for a fire truck according to claim 1, characterized in that: The described support seats are evenly provided with four claw-shaped locking block support seats.

6. The on-vehicle drone takeoff and landing platform for a fire truck according to claim 1, characterized in that: The described support seat is provided with a U-shaped groove.

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