A fire-fighting drone emergency throwing device

Abstract

The present invention discloses a fire-fighting drone emergency throwing device, which relates to the technical field of throwing devices. It includes a frame, a connecting sleeve assembly is provided at the bottom of the frame, a pulling rope is connected to the top of the frame, the pulling rope is located inside the connecting sleeve assembly, a clamping unit is provided at the bottom of the connecting sleeve assembly, the lower end of the pulling rope is connected to the clamping unit, and a driving part for driving the contraction or release of the pulling rope is provided on the bottom plate. When the pulling rope contracts, the clamping unit is in a clamped state. The connecting sleeve assembly includes an upper connecting sleeve, a middle connecting sleeve and a lower connecting sleeve. A pin assembly is arranged inside the connecting sleeve assembly. The pin assemblies are respectively and independently arranged in the upper connecting sleeve, the middle connecting sleeve and the lower connecting sleeve, and multiple pin assemblies can be connected in series with each other. In the present invention, the drone can achieve automatic throwing without staying, and a whole structure is formed through the cooperation between the upper connecting sleeve, the middle connecting sleeve and the lower connecting sleeve during the movement process, avoiding the inclination of materials during transportation.

Description

Technical Field

[0001] The invention relates to the technical field of throwing equipment, in particular to an emergency throwing equipment of a fire-fighting unmanned aerial vehicle. Background Art

[0002] With the rapid development of science and technology, drone technology has been widely used in various fields, especially in the field of emergency rescue. As an efficient and flexible rescue tool, it can quickly deliver rescue supplies at disaster sites such as fires and earthquakes, buying precious time for rescue work. However, most of the existing drone throwing methods use ropes tied to the drone landing gear, and a storage box is tied at the bottom of the rope. When the drone arrives at the designated location, there are two ways to complete the delivery. One is to manually release the connection between the rope and the storage box, and the other is to set a release mechanism on the drone to release the rope and the storage basket synchronously. The above method 1 has the problem of low efficiency. Although the second method can improve efficiency, the rope can only be used once, and the rope is prone to swing during transportation. For this reason, we propose a fire-fighting drone emergency throwing equipment. Summary of the invention

[0003] The purpose of the present invention is to provide an emergency throwing device for a fire-fighting drone to solve the problem of how to realize automatic feeding of the drone's external throwing device and prevent swaying during transportation.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an emergency throwing device for a fire-fighting drone, comprising a frame for connecting to the landing gear of the drone, the frame comprising a bottom plate and four connecting rods connected to the bottom plate, each connecting rod is connected to a locking sleeve at the top, the locking sleeve is connected to the landing gear of the drone, a connecting sleeve assembly is provided at the bottom of the bottom plate, a pull rope is connected to the top of the bottom plate, the pull rope is located inside the connecting sleeve assembly, a clamping unit is provided at the bottom of the connecting sleeve assembly, the lower end of the pull rope is connected to the clamping unit, a driving part for driving the pull rope to retract or release is provided on the bottom plate, and when the pull rope is retracted, the pull rope is released. When the pull rope is retracted, the clamping unit is in a clamping state, and the connecting sleeve assembly includes an upper connecting sleeve, a middle connecting sleeve and a lower connecting sleeve, wherein the upper connecting sleeve is connected to the bottom of the base plate, and the upper connecting sleeve, the middle connecting sleeve and the lower connecting sleeve can rotate with each other, and a pin assembly is arranged in the connecting sleeve assembly, and the pin assembly is independently arranged in the upper connecting sleeve, the middle connecting sleeve and the lower connecting sleeve. When the driving part drives the pull rope to retract, the pin assemblies located in the upper connecting sleeve, the middle connecting sleeve and the lower connecting sleeve are connected in series to form the upper connecting sleeve, the middle connecting sleeve and the lower connecting sleeve into an integral structure.

[0005] As a preferred embodiment of the present invention, a lower connecting plate a is provided at the bottom of the upper connecting sleeve, a first rotation groove is provided in the lower connecting plate a, a first through hole is provided on the lower connecting plate a that passes through the first rotation groove, an upper connecting plate a is provided at the upper end of the middle connecting sleeve, the upper connecting plate a is inserted into the first rotation groove, first bosses are provided on both sides of the upper connecting plate a, the first bosses are inserted into the first through hole, there are multiple middle connecting sleeves, and the multiple middle connecting sleeves are hinged in sequence, a lower connecting plate b is provided at the bottom of the middle connecting sleeve, a second rotation groove is provided on the inner side of the lower connecting plate b, a second through hole is provided on the lower connecting plate b that passes through the second rotation groove, and two adjacent middle connecting sleeves are connected at the ends, an upper connecting plate c is provided at the top of the lower connecting sleeve, second bosses are provided on both sides of the upper connecting plate c, the upper connecting plate c is used to be inserted into the second rotation groove on the middle connecting sleeve, and the second boss is inserted into the second through hole.

[0006] As a preferred embodiment of the present invention, the plug-in assembly in the upper connecting sleeve includes a first movable plate, the first movable plate is located between the cross frame and the bottom plate, the first slide plate is connected to the cross frame between the second driving rod, the first movable plate is downwardly extended at both sides of the first movable plate, the first movable plate is upwardly extended and connected to the second slide rail, and the cross frame is provided with a second slide plate on both outer sides of the cross frame and is slidably connected to the second slide rail. The upper connecting sleeve is provided with a fifth slot at a symmetrical position on both sides of the upper connecting sleeve and the second slot, and the second slot is slidably arranged with the fifth slot, and the first slot and the second slot are longitudinally arranged on both sides of the middle connecting sleeve in sequence, and the first slot extends upward along the middle connecting sleeve and penetrates the upper connecting plate a, and the second slot extends downward along the middle connecting sleeve and penetrates the lower connecting plate b. When the first movable plate moves downward, the second slot moves downward and enters the first slot, and the pin assembly inside the middle connecting sleeve includes a third slot arranged in the second slot, and the third slot The rod is provided with a first through slot, the second through slot is provided with a second sliding rod, the second slot is provided with a first baffle, the first baffle passes through the second through slot, the third plug rod slides on the first baffle through the second through slot, the second sliding rod penetrates the first baffle and is slidably connected with it, the second sliding rod is sleeved on the second sliding rod, two ends of the second spring respectively abut against the first baffle and the inner wall of the second through slot, the lower connecting sleeve is provided with a third slot and a fourth slot, the third slot and the fourth slot are connected, the third slot extends upward along the lower connecting sleeve and penetrates the upper connecting plate c, the third slot is slidably connected with the first plug rod, the first plug rod is provided with a first through slot, the fourth slot is provided with a second baffle, the second baffle is slidably arranged with the first through slot, the first sliding rod is provided in the first through slot, the first sliding rod penetrates the second baffle, the first sliding rod is sleeved on the first sliding rod, and the two ends of the first spring respectively abut against the second baffle and the first through slot.

[0007] As a preferred implementation manner of the present invention, the width of the first slot is greater than the widths of the second slot and the fifth slot.

[0008] As a preferred embodiment of the present invention, a second outer convex plate is provided at the top of the third plug rod, and the top of the second outer convex plate is arc-shaped. When the second outer convex plate moves upward to the limit position, the surface of the second outer convex plate coincides with the end face of the upper connecting plate a, and the width of the second outer convex plate is equal to the first slot, and the second outer convex plate is embedded in the first slot, and a first stop is provided at the end part of the first slot, and a first notch is provided on the end face of the second outer convex plate to accommodate the first stop block, and the bottom of the second plug rod is composed of two symmetrical first push rods, and the gap between the two first push rods forms a first accommodating groove, and the first accommodating groove is a vertical strip, and the width of the first accommodating groove is the same as the first stop block, each of the first push rods is provided with a second accommodating groove, and a first rotating shaft is provided in the two symmetrical second accommodating grooves, and the first rotating shaft is connected to the first rotating plate by a torsion spring. In a natural state, the two first rotating plates are close to each other under the action of the torsion spring, and a first positioning block is provided on the outside of the first rotating plate.

[0009] As a preferred embodiment of the present invention, the lower end of the third plug rod in the middle connecting sleeve is composed of two second push rods, the gap between the two second push rods forms a fourth accommodating groove, each of the second push rods is provided with a third accommodating groove, a second rotating shaft is provided in the third accommodating groove, the second rotating shaft is connected to the second rotating plate through a torsion spring, and a second positioning block is provided on the outer side of the second rotating plate.

[0010] As a preferred embodiment of the present invention, a first outer convex plate is provided at the upper end of the first plug rod in the lower connecting sleeve, a second stopper is connected to the third slot port portion, and a second notch is provided at the end surface of the first outer convex plate.

[0011] The cam is connected with the second movable plate by the second movable plate, and the cam is connected with the second movable plate by the second movable plate.

[0012] As a preferred embodiment of the present invention, the clamping unit includes four third sliding rods installed at the bottom of the lower connecting sleeve, and the four third sliding rods are slidably connected with a lifting plate. The lower end of the pull rope is connected to the lifting plate, and two symmetrical first brackets are provided at the bottom of the lower connecting sleeve. A clamping rod is rotatably provided at the lower end of the first bracket, and a hook is provided at the lower end of the clamping rod. A resistance rod is provided at the upper end of the clamping rod. When the pull rope contracts and drives the lifting plate to move upward, the lifting plate contacts the inner side of the resistance rod and drives the clamping rod to rotate, and the two hooks are in a fit state.

[0013] As a preferred embodiment of the present invention, a second bracket is provided on the first bracket, a fixing sleeve is connected to the second bracket, an arc rod is connected to the resistance rod, the arc rod is slidably connected to the fixing sleeve, a fourth spring is sleeved on the arc rod, two ends of the fourth spring are respectively abutted against the resistance rod and the fixing sleeve, a limiting plate is provided at the end of the arc rod, and a third spring is sleeved on each of the four third sliding rods, and the third spring is located between the lifting plate and the lower connecting sleeve.

[0014] Compared with the prior art, the beneficial effect of the present invention is that while the driving part drives the pull rope to retract, the latch assembly moves synchronously to lock the upper connecting sleeve, the middle connecting sleeve and the lower connecting sleeve, thereby avoiding tilting when the drone is running.

[0015] The drone of the present invention can realize automatic delivery without stopping, and during the movement, an upper connecting sleeve, a middle connecting sleeve and a lower connecting sleeve cooperate to form an integral structure, thereby avoiding tilting of materials during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an emergency throwing device for a fire-fighting drone of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of an emergency throwing device for a fire-fighting drone of the present invention. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the structure of an emergency throwing device for a fire-fighting drone of the present invention. Figure 3 ;

[0019] Figure 4 This is a schematic diagram of the structure of the driving part of the emergency throwing equipment of a fire-fighting drone of the present invention. Figure 1 ;

[0020] Figure 5 This is a schematic diagram of the structure of the driving part of the emergency throwing equipment of a fire-fighting drone of the present invention. Figure 2 ;

[0021] Figure 6 The present invention is a fire-fighting drone emergency throwing equipment Figure 5 The structural diagram of part A in the figure;

[0022] Figure 7 This is a structural schematic diagram of a middle connecting sleeve of an emergency throwing device of a fire-fighting drone of the present invention;

[0023] Figure 8 This is a schematic diagram of the internal structure of a middle connecting sleeve of an emergency throwing device of a fire-fighting drone of the present invention;

[0024] Fig. 9 The present invention is a fire-fighting drone emergency throwing equipment Figure 8 The structural diagram of part B;

[0025] Fig.10 This is a schematic diagram of the structure of a clamping unit for emergency throwing equipment of a fire-fighting drone of the present invention. Figure 1 ;

[0026] Fig.11 The present invention is a fire-fighting drone emergency throwing equipment Fig.10 Schematic diagram of the structure of part C;

[0027] Fig.12 This is a schematic diagram of the structure of a clamping unit for emergency throwing equipment of a fire-fighting drone of the present invention. Figure 2 ;

[0028] Fig.13 The present invention is a fire-fighting drone emergency throwing equipment Fig.12 The structural diagram of the D part;

[0029] Fig.14 A schematic diagram of the connection structure of a latch assembly for an emergency throwing device of a fire-fighting drone according to the present invention Figure 1 ;

[0030] Fig.15 A schematic diagram of the connection structure of a latch assembly for an emergency throwing device of a fire-fighting drone according to the present invention Figure 2 ;

[0031] In the figure: 100, bottom plate; 101, connecting rod; 102, locking sleeve; 200, upper connecting sleeve; 201, lower connecting plate a; 202, first rotating groove; 203, first through hole; 300, middle connecting sleeve; 301, upper connecting plate a; 302, first boss; 303, lower connecting plate b; 304, second rotating groove; 305, second through hole; 306, first stopper; 307, first slot; 308, second slot; 309, first stopper; 400, lower connecting sleeve; 401, first Four slots; 402, second baffle; 403, third slot; 404, second baffle; 405, first plug rod; 406, first outer convex plate; 407, first slide bar; 408, first spring; 409, first through slot; 412, upper connecting plate c; 413, second boss; 500, mounting plate; 501, cross frame; 502, supporting partition; 503, cylinder; 504, first slide plate; 505, first slide slot; 506, second slide plate; 5061, second slide rail; 507, first slide rail ; 508, first moving plate; 5081, second plug rod; 5082, first push rod; 5083, first receiving groove; 5084, second receiving groove; 5085, first rotating shaft; 5086, first rotating plate; 5087, first positioning block; 5089, fifth slot; 509, second moving plate; 510, pull rope; 511, first driving rod; 512, second driving rod; 600, third plug rod; 601, second outer convex plate; 602, first notch; 603, second through groove; 604 , second push rod; 605, second slide bar; 606, second spring; 607, third accommodating groove; 608, fourth accommodating groove; 609, second rotating shaft; 610, second rotating plate; 611, second positioning block; 700, third slide bar; 701, lifting plate; 702, third spring; 703, first bracket; 704, clamping rod; 705, hook; 706, contact rod; 707, second bracket; 708, fixing sleeve; 709, arc rod; 710, fourth spring; 711, limit plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] See also Figure 1-Figure 15 The present invention discloses an emergency throwing device for a fire-fighting UAV, comprising a frame for connecting to a landing gear of the UAV, the frame comprising a base plate 100 and four connecting rods 101 connected to the base plate 100, a locking sleeve 102 is connected to the top of each connecting rod 101, the locking sleeve 102 is connected to the landing gear of the UAV, a connecting sleeve assembly is provided at the bottom of the base plate 100, a pull rope 510 is connected to the top of the base plate 100, the pull rope 510 is located inside the connecting sleeve assembly, a clamping unit is provided at the bottom of the connecting sleeve assembly, the lower end of the pull rope 510 is connected to the clamping unit, a driving part is provided on the base plate 100, which is used to drive the pull rope 510 to contract or release, and when the pull rope 510 contracts, the clamping unit is in a clamped state.

[0036] In one embodiment, reference Figure 2 The connecting sleeve assembly includes an upper connecting sleeve 200, a middle connecting sleeve 300 and a lower connecting sleeve 400. The upper connecting sleeve 200 is connected to the bottom of the base plate 100 and can be connected by welding or other screw fixing methods. The upper end of the middle connecting sleeve 300 is hinged to the upper connecting sleeve 200, and the lower end thereof is hinged to the lower connecting sleeve 400. In a natural state, the upper connecting sleeve 200, the middle connecting sleeve 300 and the lower connecting sleeve 400 can rotate with each other, wherein there are multiple middle connecting sleeves 300, and the multiple middle connecting sleeves 300 are hinged in sequence.

[0037] Furthermore, the rotation between the upper connecting sleeve 200 and the middle connecting sleeve 300 is as follows: Figure 5-Figure 7 As shown, a lower connecting plate a201 is provided at the bottom of the upper connecting sleeve 200, a first rotation groove 202 is provided in the lower connecting plate a201, a first through hole 203 penetrating the first rotation groove 202 is provided on the lower connecting plate a201, an upper connecting plate a301 is provided at the upper end of the middle connecting sleeve 300, the upper connecting plate a301 is inserted into the first rotation groove 202, first bosses 302 are provided on both sides of the upper connecting plate a301, and the first bosses 302 are inserted into the first through hole 203, thereby satisfying the rotation between the upper connecting sleeve 200 and the middle connecting sleeve 300.

[0038] Furthermore, the rotation method between multiple middle connecting sleeves 300 is as follows: a lower connecting plate b303 is provided at the bottom of the middle connecting sleeve 300, a second rotation groove 304 is provided on the inner side of the lower connecting plate b303, and a second through hole 305 that penetrates the second rotation groove 304 is provided on the lower connecting plate b303. The two adjacent middle connecting sleeves 300 can be rotated by being connected at the ends. The connection method refers to the connection method between the upper connecting sleeve 200 and the middle connecting sleeve 300, and will not be elaborated on here.

[0039] Furthermore, the rotation method between the middle connecting sleeve 300 and the lower connecting sleeve 400 is as follows: an upper connecting plate c412 is provided on the top of the lower connecting sleeve 400, and second bosses 413 are provided on both sides of the upper connecting plate c412. The upper connecting plate c412 is used to be inserted into the second rotation groove 304 on the middle connecting sleeve 300, and the second boss 413 is inserted into the second through hole 305, thereby satisfying the rotation between the middle connecting sleeve 300 and the lower connecting sleeve 400.

[0040] In one embodiment, the present embodiment discloses an embodiment of a clamping unit, the clamping unit is connected to the bottom of the lower connecting sleeve 400, the clamping power source of the clamping unit mainly comes from the contraction of the pull rope 510, and the driving part for driving the contraction of the pull rope 510 includes two mounting plates 500 mounted on the bottom plate 100, the two mounting plates 500 are symmetrically arranged, two cross frames 501 are arranged between the two mounting plates 500, and support partitions 502 are arranged near the ends of the two cross frames 501 for improving stability, a first slide groove 505 is arranged on the inner side of the cross frame 501, and a second slide groove 505 is slidably arranged on the first slide groove 505. A slide plate 504 is provided with a cylinder 503 on the supporting partition plate 502, the output end of the cylinder 503 is connected to the first slide plate 504, a first slide rail 507 is provided in the middle of the cross frame 501, a second movable plate 509 is slidably connected to the first slide rail 507, a first driving rod 511 is rotatably connected between the first slide plate 504 and the second movable plate 509, the upper end of the pull rope 510 is connected to the second movable plate 509, when the first slide plate 504 approaches the first slide rail 507, the second movable plate 509 is driven to move upward by the first driving rod 511, thereby applying tension to the pull rope 510.

[0041] Further, such as Figure 8 , Fig. 9 and Fig.10As shown, the clamping unit includes four third slide bars 700 installed at the bottom of the lower connecting sleeve 400, and the four third slide bars 700 are slidably connected with the lifting plate 701, and the lower end of the pull rope 510 is connected to the lifting plate 701. Two symmetrical first brackets 703 are provided at the bottom of the lower connecting sleeve 400, and a clamping rod 704 is rotatably provided at the lower end of the first bracket 703. A hook 705 is provided at the lower end of the clamping rod 704, and a resistance rod 706 is provided at the upper end. When the pull rope 510 contracts and drives the lifting plate 701 to move upward, the lifting plate 701 contacts the inner side of the resistance rod 706 and drives the clamping rod 704 to rotate, so that the two hooks 705 are in a fitting state.

[0042] Furthermore, the first bracket 703 is provided with a second bracket 707, the second bracket 707 is connected with a fixing sleeve 708, the contact rod 706 is connected with an arc rod 709, the arc rod 709 is slidably connected with the fixing sleeve 708, the arc rod 709 is sleeved with a fourth spring 710, the two ends of the fourth spring 710 are respectively against the contact rod 706 and the fixing sleeve 708, through the setting of the fourth spring 710, the clamping rod 704 can be automatically reset, the end of the arc rod 709 is provided with a limit plate 711, which is used to limit the arc rod 709 from being separated from the fixing sleeve 708, and the two hooks 705 are automatically separated to facilitate the release of the storage container. At the same time, a third spring 702 is sleeved on each of the four third sliding rods 700, and the third spring 702 is located between the lifting plate 701 and the lower connecting sleeve 400. When the driving unit drives the pull rope 510 to release, the third spring 702 drives the lifting plate 701 to automatically reset, and then the two hooks 705 are in an open and closed state.

[0043] In one embodiment, in order to prevent the connecting sleeve assembly from swaying during drone transportation, a latch assembly is provided in the connecting sleeve assembly. Specifically, the latch assemblies are independently provided in the upper connecting sleeve 200, the middle connecting sleeve 300 and the lower connecting sleeve 400. When the driving unit drives the pull rope 510 to contract, the latch assemblies located in the upper connecting sleeve 200, the middle connecting sleeve 300 and the lower connecting sleeve 400 are connected in series with each other to form the upper connecting sleeve 200, the middle connecting sleeve 300 and the lower connecting sleeve 400 into an integral structure, thereby avoiding swaying between the multiple connecting sleeve bodies.

[0044] like Figure 4-Figure 9 As shown, the above connecting sleeve 200 and the middle connecting sleeve 300 are taken as examples:

[0045] The plug-in assembly in the upper connecting sleeve 200 includes a first movable plate 508, which is located between the cross frame 501 and the bottom plate 100. A second driving rod 512 is connected between the first slide plate 504 and the cross frame 501. As the first slide plate 504 moves on the cross frame 501, the first movable plate 508 is driven to move up and down by the second driving rod 512. Second plug rods 5081 extend downward on both sides of the first movable plate 508, and the first movable plate 508 extends upward and is connected to a second slide rail 5061. Second slide plates 506 that are slidably connected to the second slide rail 5061 are provided on both outer sides of the cross frame 501. Fifth slots 5089 are provided at positions symmetrical to the second plug rod 5081 on both sides of the upper connecting sleeve 200, and the second plug rod 5081 is slidably set with the fifth slot 5089.

[0046] The middle connecting sleeve 300 is provided with a first slot 307 and a second slot 308 which are interpenetrating with each other in sequence on both sides of the middle connecting sleeve 300. The first slot 307 extends upward along the middle connecting sleeve 300 and penetrates the upper connecting plate a301. The second slot 308 extends downward along the middle connecting sleeve 300 and penetrates the lower connecting plate b303. When the first moving plate 508 moves downward, the second insertion rod 5081 moves downward into the first slot 307, thereby preventing the middle connecting sleeve 300 from rotating relative to the upper connecting sleeve 200. Figure 7-Figure 9 The latch assembly inside the middle connecting sleeve 300 includes a third plug rod 600 arranged in the second slot 308, a second through slot 603 is provided on the third plug rod 600, a second slide rod 605 is provided in the second through slot 603, a first baffle plate 309 is provided in the second slot 308, the first baffle plate 309 passes through the second through slot 603, the third plug rod 600 slides on the first baffle plate 309 through the second through slot 603, the second slide rod 605 passes through the first baffle plate 309 and is slidably connected thereto, a second spring 606 is sleeved on the second slide rod 605, and the two ends of the second spring 606 are respectively against the first baffle plate 309 and the inner wall of the second through slot 603. In a natural state, the third plug rod 600 is driven to move upward by the second spring 606, and under the elastic force of the second spring 606, the end of the third plug rod 600 coincides with the end of the upper connecting plate a301. It should be noted that when the pull rope 510 is in the released state, the lower end of the second plug rod 5081 is in contact with the upper end of the third plug rod 600. The purpose of this arrangement is to keep the movement stroke of the second plug rod 5081 and the third plug rod 600 consistent, thereby avoiding the phenomenon that multiple adjacent pin assemblies cannot be matched due to inconsistent movement strokes.

[0047] The cooperation between the multiple middle connecting sleeves 300 refers to the above working principle. Since the structure of the lower connecting sleeve 400 is different from that of the upper connecting sleeve 200 and the middle connecting sleeve 300, the cooperation between the middle connecting sleeve 300 and the lower connecting sleeve 400 is taken as an example to explain the working principle of the lower connecting sleeve 400 in detail. Figure 12-13 A third slot 403 and a fourth slot 401 are provided in the lower connecting sleeve 400, and the third slot 403 and the fourth slot 401 are connected. The third slot 403 extends upward along the lower connecting sleeve 400 and penetrates the upper connecting plate c412. A first plug rod 405 is slidably connected in the third slot 403, and a first through slot 409 is provided on the first plug rod 405. A second baffle plate 402 is provided in the fourth slot 401, and the second baffle plate 402 is slidably arranged with the first through slot 409. A first slide bar 407 is provided in the first through slot 409, and the first slide bar 407 penetrates the second baffle plate 402. A first spring 408 is sleeved on the first slide bar 407, and the two ends of the first spring 408 are respectively against the second baffle plate 402 and the first through slot 409. When the elastic force of the first spring 408 is released, the upper end edge of the first plug rod 405 overlaps with the upper connecting plate c412 to form an integral arc surface. When the third plugging rod 600 in the middle connecting sleeve 300 moves downward, the first plugging rod 405 in the lower connecting sleeve 400 is synchronously driven to move downward. At this time, the third plugging rod 600 is inserted into the third slot 403 to realize the positioning of the lower connecting sleeve 400.

[0048] In one embodiment, in order to prevent the pin assembly inside the upper connecting sleeve 200, the middle connecting sleeve 300 or the lower connecting sleeve 400 from getting stuck, this embodiment optimizes the internal shape of each connecting sleeve and locally improves multiple plug rods, thereby avoiding the sticking phenomenon while minimizing the swing amplitude between multiple connecting sleeves.

[0049] Specifically, refer to Figure 5 , Fig.14 , Fig.15 When the width of the first slot 307 is the same as the width of the fifth slot 5089 and the second slot 308, when the upper connecting sleeve 200 and the middle connecting sleeve 300 are slightly bent, the second plug rod 5081 cannot be inserted into the first slot 307, resulting in a jamming phenomenon. Therefore, in this embodiment, the width of the first slot 307 is greater than the width of the second slot 308 and the fifth slot 5089. The purpose of this setting is that even if a slight bend occurs, it will not affect the up and down movement of the second plug rod 5081.

[0050] Further, such as Fig.14As shown, since the width of the first slot 307 is wider, there is a gap in the second plug rod 5081 in the first slot 307, so that there is a certain swing gap between the upper connecting sleeve 200 and the middle connecting sleeve 300. In order to avoid this defect, a second outer convex plate 601 is provided on the top of the third plug rod 600, and the top of the second outer convex plate 601 is arc-shaped. When the second outer convex plate 601 moves upward to the extreme position, the surface of the second outer convex plate 601 coincides with the end face of the upper connecting plate a301. The width of the second outer convex plate 601 is equal to that of the first slot 307. The second outer convex plate 601 is embedded in the first slot 307. A first stopper 306 is provided at the end portion of the first slot 307. A first notch 602 for accommodating the first stopper 306 is provided on the end face of the second outer convex plate 601. The bottom of the second plug rod 5081 is composed of two symmetrical first push rods 5082. The gap between the two first push rods 5082 forms a first accommodating groove 5083, which is a vertical strip. The width of the first accommodating groove 5083 is the same as that of the first stop block 306. Each first push rod 5082 is provided with a second accommodating groove 5084, and two symmetrical second accommodating grooves 5084 are provided with a first rotating shaft 5085. The first rotating shaft 5085 is connected to the first rotating plate 5086 through a torsion spring (not shown in the figure). In a natural state, the two first rotating plates 5086 move closer to each other under the action of the torsion spring. When the first stop block 306 moves upward on the first accommodating groove 5083 and touches the inner side of the first rotating plate 5086, the two first rotating plates 5086 are driven to expand outward, and a first positioning block 5087 is provided on the outer side of the first rotating plate 5086. The first positioning block 5087 contacts the first slot 307 to achieve positioning.

[0051] Optionally, the structure between the first positioning block 5087 and the first slot 307 can be designed according to actual use, including but not limited to rubber and frosted metal layers.

[0052] Furthermore, the lower end of the third plug rod 600 in the middle connecting sleeve 300 is composed of two second push rods 604, and the gap between the two second push rods 604 forms a fourth accommodating groove 608. Each second push rod 604 is provided with a third accommodating groove 607, and a second rotating shaft 609 is provided in the third accommodating groove 607. The second rotating shaft 609 is connected to the second rotating plate 610 through a torsion spring, and a second positioning block 611 is provided on the outer side of the second rotating plate 610. The locking between the middle connecting sleeves 300 has the same working principle as described in the previous paragraph, and will not be elaborated here.

[0053] Further, see Fig.12A first outer convex plate 406 is provided at the upper end of the first insertion rod 405 in the lower connecting sleeve 400, a second stopper 404 is connected to the end portion of the third slot 403, and a second notch is provided on the end face of the first outer convex plate 406 (not shown in the figure, the structure of the second notch is the same as the first notch 602). The locking principle between the middle connecting sleeve 300 and the lower connecting sleeve 400 is the same as the locking method of the upper connecting sleeve 200 and the middle connecting sleeve mentioned above, and will not be elaborated here.

[0054] The working principle of the present invention is as follows: the drone is in operation and starts to take off from the take-off frame to a preset height. At this time, the clamping unit is located directly above the material. At this time, the pull rope 510 is driven to contract by the driving unit. At this time, the latch assembly moves synchronously to achieve the locking of the upper connecting sleeve 200, the middle connecting sleeve 300 and the lower connecting sleeve 400, thereby avoiding tilting when the drone is in operation. The drone of the present invention can achieve automatic delivery without stopping, and during the movement, the upper connecting sleeve, the middle connecting sleeve and the lower connecting sleeve form an integral structure through the cooperation, thereby avoiding the tilting of the material during the transportation process.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A fire-fighting drone emergency throwing device, characterized by: The invention relates to a frame for connecting to a landing gear of an unmanned aerial vehicle, wherein the frame comprises a base plate (100) and four connecting rods (101) connected to the base plate (100), wherein the top of each connecting rod (101) is connected to a locking sleeve (102), wherein the locking sleeve (102) is connected to the landing gear of the unmanned aerial vehicle, wherein a connecting sleeve assembly is provided at the bottom of the base plate (100), wherein a pull rope (510) is connected to the top of the base plate (100), wherein the pull rope (510) is located inside the connecting sleeve assembly, wherein a clamping unit is provided at the bottom of the connecting sleeve assembly, wherein the lower end of the pull rope (510) is connected to the clamping unit, wherein a driving unit for driving the pull rope (510) to contract or release is provided on the base plate (100), wherein when the pull rope (510) contracts, the clamping unit is in a clamping state, and wherein the connecting sleeve assembly comprises an upper connecting sleeve assembly and a lower connecting sleeve assembly. The invention relates to a pull rope (510) comprising an upper connecting sleeve (200), a middle connecting sleeve (300) and a lower connecting sleeve (400), wherein the upper connecting sleeve (200) is connected to the bottom of the base plate (100), and the upper connecting sleeve (200), the middle connecting sleeve (300) and the lower connecting sleeve (400) can rotate relative to each other, and a latch assembly is arranged in the connecting sleeve assembly, and the latch assembly is independently arranged in the upper connecting sleeve (200), the middle connecting sleeve (300) and the lower connecting sleeve (400), respectively. When the driving unit drives the pull rope (510) to contract, the latch assemblies in the upper connecting sleeve (200), the middle connecting sleeve (300) and the lower connecting sleeve (400) are connected in series to form an integral structure of the upper connecting sleeve (200), the middle connecting sleeve (300) and the lower connecting sleeve (400).

2. The emergency throwing device of the fire-fighting drone according to claim 1, characterized in that: The bottom of the upper connecting sleeve (200) is provided with a lower connecting plate a (201), a first rotating groove (202) is provided in the lower connecting plate a (201), and a first through hole (203) penetrating the first rotating groove (202) is provided on the lower connecting plate a (201). The upper end of the middle connecting sleeve (300) is provided with an upper connecting plate a (301), the upper connecting plate a (301) is inserted into the first rotating groove (202), and first bosses (302) are provided on both sides of the upper connecting plate a (301), and the first bosses (302) are inserted into the first through hole (203). The number of the middle connecting sleeves (300) is multiple, and the multiple middle connecting sleeves (300) are hingedly connected in sequence. The middle connecting sleeve (300) is provided with a lower connecting plate b (303) at the bottom, a second rotation groove (304) is provided on the inner side of the lower connecting plate b (303), and a second through hole (305) penetrating the second rotation groove (304) is provided on the lower connecting plate b (303). The two adjacent middle connecting sleeves (300) are connected at the ends, and an upper connecting plate c (412) is provided at the top of the lower connecting sleeve (400). Second bosses (413) are provided on both sides of the upper connecting plate c (412), and the upper connecting plate c (412) is used to be inserted into the second rotation groove (304) on the middle connecting sleeve (300), and the second boss (413) is inserted into the second through hole (305).

3. The emergency throwing device of the fire-fighting drone according to claim 2, characterized in that: The plug-in assembly in the upper connecting sleeve (200) comprises a first movable plate (508), the first movable plate (508) is located between the cross frame (501) and the bottom plate (100), a second driving rod (512) is connected between the first slide plate (504) and the cross frame (501), second plugging rods (5081) are extended downwardly on both sides of the first movable plate (508), the first movable plate (508) is extended upwardly and connected to a second slide rail (5061), and two outer sides of the cross frame (501) are provided with a second slide rail (5061) connected to the second slide rail (5061). A second sliding plate (506) is slidably connected, a fifth slot (5089) is symmetrically arranged on both sides of the upper connecting sleeve (200) and the second plug rod (5081), and the second plug rod (5081) and the fifth slot (5089) are slidably arranged, and a first slot (307) and a second slot (308) are longitudinally arranged on both sides of the middle connecting sleeve (300) in sequence, and the first slot (307) extends upward along the middle connecting sleeve (300) and penetrates the upper connecting plate a (301), and the second slot (308) is arranged on both sides of the middle connecting sleeve (300). 08) extends downwardly along the middle connecting sleeve (300) and penetrates the lower connecting plate b (303); when the first movable plate (508) moves downward, the second plug rod (5081) moves downward and enters the first slot (307); the latch assembly inside the middle connecting sleeve (300) includes a third plug rod (600) arranged in the second slot (308); the third plug rod (600) is provided with a second through slot (603); the second through slot (603) is provided with a second sliding rod (605); the second plug rod (600) is provided with a second sliding rod (605); the second A first baffle (309) is provided in the groove (308), the first baffle (309) passes through the second through groove (603), the third insertion rod (600) slides on the first baffle (309) through the second through groove (603), the second sliding rod (605) passes through the first baffle (309) and is slidably connected thereto, a second spring (606) is sleeved on the second sliding rod (605), and two ends of the second spring (606) are respectively against the first baffle (309) and the inner wall of the second through groove (603),The lower connecting sleeve (400) is provided with a third slot (403) and a fourth slot (401), the third slot (403) and the fourth slot (401) are connected, the third slot (403) extends upward along the lower connecting sleeve (400) and passes through the upper connecting plate c (412), the third slot (403) is slidably connected with a first plug rod (405), the first plug rod (405) is provided with a first through slot (409), the fourth slot (401) is provided with a second baffle plate (402), the second baffle plate (402) and the first through slot (409) are slidably arranged, the first through slot (409) is provided with a first slide bar (407), the first slide bar (407) passes through the second baffle plate (402), the first slide bar (407) is sleeved with a first spring (408), and the two ends of the first spring (408) are respectively against the second baffle plate (402) and the first through slot (409). , 4. The emergency throwing device of the fire-fighting drone according to claim 3, characterized in that: The width of the first slot (307) is greater than the widths of the second slot (308) and the fifth slot (5089).

5. The emergency throwing device of the fire-fighting drone according to claim 4, characterized in that: A second outer convex plate (601) is provided at the top of the third insertion rod (600), and the top of the second outer convex plate (601) is arc-shaped. When the second outer convex plate (601) moves upward to the limit position, the surface of the second outer convex plate (601) coincides with the end face of the upper connecting plate a (301). The width of the second outer convex plate (601) is equal to the first slot (307). The second outer convex plate (601) is embedded in the first slot (307). A first stopper (306) is provided at the end portion of the first slot (307). A first notch (602) for accommodating the first stopper (306) is provided at the end face of the second outer convex plate (601). The bottom of the second insertion rod (5081) is composed of two symmetrical The first push rod (5082) is composed of a first push rod (5082), the gap between the two first push rods (5082) forms a first receiving groove (5083), the first receiving groove (5083) is a vertical strip, the width of the first receiving groove (5083) is the same as the first stopper (306), each of the first push rods (5082) is provided with a second receiving groove (5084), two symmetrical second receiving grooves (5084) are provided with a first rotating shaft (5085), the first rotating shaft (5085) is connected with a first rotating plate (5086) through a torsion spring, in a natural state, the two first rotating plates (5086) are moved closer to each other under the action of the torsion spring, and a first positioning block (5087) is provided on the outer side of the first rotating plate (5086).

6. The emergency throwing device of the fire-fighting drone according to claim 5, characterized in that: The lower end of the third insertion rod (600) in the middle connecting sleeve (300) is composed of two second push rods (604), and the gap between the two second push rods (604) forms a fourth accommodating groove (608). Each of the second push rods (604) is provided with a third accommodating groove (607), and a second rotating shaft (609) is provided in the third accommodating groove (607). The second rotating shaft (609) is connected to a second rotating plate (610) through a torsion spring, and a second positioning block (611) is provided on the outer side of the second rotating plate (610).

7. The emergency throwing device of the fire-fighting drone according to claim 5, characterized in that: A first outer convex plate (406) is provided at the upper end of the first insertion rod (405) in the lower connecting sleeve (400), a second stopper (404) is connected to the end portion of the third slot (403), and a second notch is provided on the end surface of the first outer convex plate (406).

8. The emergency throwing device of the fire-fighting drone according to claim 1, characterized in that: The driving unit for driving the pull rope (510) to contract comprises two mounting plates (500) mounted on the bottom plate (100), the two mounting plates (500) being symmetrically arranged, two cross frames (501) being arranged between the two mounting plates (500), support partitions (502) being arranged near the ends of the two cross frames (501), a first slide groove (505) being arranged inside the cross frame (501), a first slide plate (504) being slidably arranged on the first slide groove (505), a cylinder (503) being mounted on the support partition plate (502), an output end of the cylinder (503) being connected to the first slide plate (504), a first slide rail (502) being arranged in the middle of the cross frame (501), and a first slide rail (505) being arranged on the inner side of the cross frame (501). 07), a second movable plate (509) is slidably connected to the first slide rail (507), a first driving rod (511) is rotatably connected between the first slide plate (504) and the second movable plate (509), the upper end of the pull rope (510) is connected to the second movable plate (509), when the first slide plate (504) approaches the first slide rail (507), the second movable plate (509) is driven to move upward by the first driving rod (511), thereby applying tension to the pull rope (510), the clamping unit is connected to the bottom of the lower connecting sleeve (400), and the clamping power source of the clamping unit is mainly derived from the contraction of the pull rope (510).

9. The emergency throwing device of the fire-fighting drone according to claim 8, characterized in that: The clamping unit comprises four third sliding bars (700) installed at the bottom of the lower connecting sleeve (400), and a lifting plate (701) is slidably connected to the four third sliding bars (700). The lower end of the pull rope (510) is connected to the lifting plate (701). Two symmetrical first brackets (703) are provided at the bottom of the lower connecting sleeve (400), and a clamping rod (704) is rotatably provided at the lower end of the first bracket (703). A hook (705) is provided at the lower end of the clamping rod (704), and a resistance rod (706) is provided at the upper end of the clamping rod (704). When the pull rope (510) contracts and drives the lifting plate (701) to move upward, the lifting plate (701) contacts the inner side of the resistance rod (706) and drives the clamping rod (704) to rotate, and the two hooks (705) are in a fitted state.

10. The emergency throwing device of the fire-fighting drone according to claim 9, characterized in that: A second bracket (707) is provided on the first bracket (703), a fixing sleeve (708) is connected to the second bracket (707), an arc rod (709) is connected to the abutting rod (706), the arc rod (709) is slidably connected to the fixing sleeve (708), a fourth spring (710) is sleeved on the arc rod (709), two ends of the fourth spring (710) are respectively abutted against the abutting rod (706) and the fixing sleeve (708), a limiting plate (711) is provided at the end of the arc rod (709), and at the same time, a third spring (702) is sleeved on each of the four third sliding rods (700), and the third spring (702) is located between the lifting plate (701) and the lower connecting sleeve (400).

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