An emergency dropping device for a drone suspension

Abstract

The present invention discloses an emergency dropping device for a drone suspension, which relates to the technical field of drone dropping. It includes a mounting frame, a dropping frame, and a hanging member for hanging materials. There are two dropping frames, which are symmetrically arranged on both sides below the mounting frame. The upper part of the mounting frame is used for bolt assembly connection with the drone. The dropping frame includes an outer frame, an inner frame, arc-shaped teeth, and gears. The inner frame is arranged inside the outer frame and is concentric with the outer frame. There are two arc-shaped teeth, which are symmetrically and slidably arranged on both sides of the outer arc surface of the inner frame. A driving mechanism is arranged inside the inner frame, and the two arc-shaped teeth are respectively driven to slide by the driving mechanism. There are multiple gears, which are slidably arranged between the inner frame and the outer frame. In the present invention, multiple materials are assembled on the gears through the hanging members, and multiple gears are arranged in the dropping frame, so that it is possible to carry more materials for multi-point dropping. After one dropping is completed, the drone can go to the next location for dropping, reducing the round-trip time of the drone and improving the dropping efficiency to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of UAV delivery, and in particular to an emergency delivery device for UAV suspension. Background Art

[0002] An emergency delivery device for UAV suspension is a device usually used to carry and deliver materials, rescue equipment or other items. It is usually installed on the carrying platform of a UAV. It can accurately deliver items from the air to a designated location by remote control or automation, and is widely used in fields such as emergency rescue, environmental monitoring, and post-disaster reconstruction;

[0003] For example, "CN115593631B" discloses a dual-redundancy UAV suspension delivery device and its working method. The delivery device includes a hook box assembly, which includes a box body and a hook, a force transmission crank arm and a cam rotatably arranged on the box body. Both the normal delivery component and the emergency delivery component control the movement of the cam, and the cam controls the swing of the driving end of the force transmission crank arm. The acting end of the force transmission crank arm is in limit cooperation with the limiting end of the hook. The working method uses the above-mentioned dual-redundancy UAV suspension delivery device, including a locked state, normal delivery and emergency delivery. The beneficial effects of the present invention are: it can realize multiple-mode delivery of UAV goods; it can achieve precise delivery through ground control; it can realize autonomous recognition and delivery without human intervention; the operating torque is small and the load is large; there are emergency safety control measures, and the reliability of task completion is higher;

[0004] However, in the prior art, when a UAV delivers materials, it usually only carries and delivers a single material. After completing one delivery, it needs to return to reload. This method limits the operation efficiency of the UAV. Especially in situations such as emergency rescue, frequent returns and reloads increase the number of flights and operation time. Summary of the Invention

[0005] In view of the above existing problems, the present invention is proposed.

[0006] The purpose of the present invention is to solve the problem in the prior art that after completing one delivery, it is necessary to return to reload, which to a certain extent reduces the delivery efficiency.

[0007] To solve the above technical problems, the present invention provides the following technical solutions:

[0008] On the one hand, the present invention provides an emergency dropping device for an unmanned aerial vehicle, which includes a mounting frame, a dropping frame and a hanging member for hanging materials. There are two dropping frames, which are symmetrically arranged on both sides below the mounting frame. The upper part of the mounting frame is used for bolt assembly connection with the unmanned aerial vehicle. The dropping frame includes an outer frame, an inner frame, arc-shaped teeth and gears. The inner frame is arranged inside the outer frame and is concentric with the outer frame. There are two arc-shaped teeth, which are symmetrically and slidably arranged on both sides of the outer arc surface of the inner frame. A driving mechanism is arranged inside the inner frame, and the two arc-shaped teeth are respectively driven to slide by the driving mechanism. There are multiple gears, which are slidably arranged between the inner frame and the outer frame. The outer wall of the gear is meshed with the arc-shaped teeth. The arc-shaped teeth include an arc-shaped plate and tooth blocks. The arc-shaped plate is provided with a plurality of inner grooves on the side facing the outer frame. The tooth blocks are evenly provided with a plurality of them. The tooth blocks are slidably arranged in the inner grooves in an adjustable manner. The two gears at the coaxial positions on the two dropping frames are respectively detachably assembled with the hanging member. The other end of the hanging member is used for assembling with the materials. The upper and lower parts of the outer frame are respectively provided with a feeding groove and a discharging groove. A baffle is arranged at the lower end of the arc-shaped plate.

[0009] Further, the length of the arc-shaped plate is less than half of the circumference of the inner frame. When the upper ends of the two arc-shaped plates are in contact with each other, the baffle is slidably arranged on the inner wall of the end face of the outer frame. A spacer block is arranged between adjacent gears. By making the length of the arc-shaped plate less than half of the circumference of the inner frame, it is convenient for the arc-shaped plate to move up and down, thereby driving the movement of the gear between the inner frame and the outer frame. By arranging the spacer block, it is avoided that the two gears are too close to each other, resulting in the meshing of adjacent gears.

[0010] Further, a connecting shaft is detachably arranged between the two symmetrically arranged gears. An installation block is slidably arranged at the central position of the gear. A clamping groove is arranged above one end of the installation block. The two ends of the connecting shaft are symmetrically provided with clamping blocks that are engaged with the clamping groove. When the connecting shaft is engaged with the gear, the clamping block is engaged with the clamping groove. When the assembled gear is installed in the dropping frame, the two gears can be kept in a symmetrical position. After the gear installation is completed, the connecting shaft can be slid out.

[0011] Further, an arc-shaped frame is slidably arranged at the edge of the inner arc surface of the inner frame. Side grooves are symmetrically arranged on both sides of the inner frame. Linkage bars that are slidably arranged with the side grooves are symmetrically arranged on both sides of the arc-shaped frame. The linkage bars are assembled with the end faces of the tooth blocks. A first cylinder is arranged inside the dropping frame. The first cylinder is slidably connected with the arc-shaped frame. The direction of the inner groove is consistent with the pulling direction of the first cylinder. The linkage bar is not connected to the upper tooth block. When the tooth block needs to be retracted into the inner groove, the first cylinder is contracted, driving the arc-shaped frame away from the inner frame so that the linkage bar pulls the tooth block into the inner groove.

[0012] Further, the driving mechanism includes a mounting seat and a second cylinder. There are two sets of driving mechanisms that drive the sliding of the arc-shaped plates on both sides respectively. The mounting seat is arranged in the middle and lower part of the inner arc surface of the inner frame. The lower end of the second cylinder is hinged to the mounting seat, and the upper end of the second cylinder is hinged to the middle and upper part of the arc-shaped plate through a connecting block. An arc-shaped groove for sliding the connecting block is provided on the inner frame. By driving the second cylinder, the arc-shaped plate is driven to slide and engage with the inner frame, realizing the discharging of the gear.

[0013] Further, a recycling rack is communicated with the placing rack below the discharging groove. An access door is provided on one side below the recycling rack, and a buffer rack is provided above the inside of the recycling rack. The recycling rack provided is used to recycle the gears separated from the materials after being placed for next use.

[0014] Further, both sides of the buffer rack are assembled and connected to both sides of the inner wall of the recycling rack. A support is provided below the buffer rack, and buffer supports are rotatably provided on both sides of the buffer rack. The lower part of the buffer support is assembled and connected to the side wall of the support through a first spring. When the gear or the spacer block falls onto the buffer support, it squeezes one side of the buffer support to unfold under the action of gravity and falls into the recycling rack from that side. After falling, the first spring resets.

[0015] Further, a power supply is provided on the recycling rack, and a conductive sheet electrically connected to the power supply is provided above the buffer rack. A conductive strip is provided at the edge of the gear. Through the cooperation of the conductive strip and the conductive sheet, it is used for the separation of the hanging part and the gear.

[0016] Further, an assembly groove is provided at the center position of one side of the gear. The mounting block is slidably arranged in the assembly groove. A strip-shaped groove and a spiral groove are provided inside the assembly groove. One end of the strip-shaped groove is communicated with the spiral groove, and the number of spiral turns of the spiral groove is 0.5 turns. The spiral groove is arranged close to the mounting block. A slider that slidably arranges in the strip-shaped groove and the spiral groove is provided on the mounting block. One end of the assembly groove is assembled and connected to the mounting block through a strong spring. A limiting block is provided above the outer end of the mounting block, and the clamping groove is provided on the limiting block. One end of the hanging part is slidably sleeved on the mounting block. The limiting block provided is used for the stability when the hanging part is sleeved on the mounting block, achieving an anti-slip effect.

[0017] Further, a disassembly groove is communicated above the assembly groove. An insertion bar is arranged in the disassembly groove through a second spring. A slot is arranged on the mounting block and is slidably engaged with the insertion bar. The lower end of the insertion bar is inclined away from the limiting block. A first magnet is arranged at the upper end of the insertion bar. A second magnet is arranged at the upper end of the slot and is adsorbed to the first magnet. One end of the conductive bar is assembled and connected to the second magnet. When feeding materials, the gear drops onto the buffer rack, and the conductive bar on the edge of the gear contacts the conductive sheet to energize the second magnet. The second magnet generates magnetism and adsorbs to the first magnet. Among them, the first magnet is a strong magnetic force magnet. The first magnet drives the insertion bar to quickly contract into the disassembly groove. The mounting block loses the limit of the insertion bar and quickly rebounds into the assembly groove under the strong pulling force of the strong spring. During the pulling-back process, due to the limitation of the slider with the strip groove and the spiral groove, the slider first passes through 0.5 spiral grooves, causing the mounting block to quickly rotate 180 degrees, rotating the limiting block downward to prevent the limiting block from blocking the detachment of the hanging part during retraction. When passing through the strip groove, the mounting block directly retracts to the innermost end of the assembly groove, and the outer end of the mounting block is completely separated from the hanging part. The hanging part loses support and the materials freely fall to the ground.

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

[0019] 1. In the present invention, multiple materials are assembled on the gear through hanging parts. Multiple gears are arranged in the feeding rack, enabling the carrying of more materials for multi-point feeding. After one feeding is completed, the drone can move to the next location for feeding, reducing the round-trip time of the drone and improving the feeding efficiency to a certain extent.

[0020] 2. In the present invention, the materials on both sides in the feeding rack are alternately fed, avoiding the situation that one side of the drone is too heavy and the other side is too light, which may cause unstable flight and ensuring flight safety.

[0021] 3. In the present invention, the provided limiting block is used for the stability when the hanging part is sleeved on the mounting block, achieving an anti-slip effect.

[0022] 4. When feeding materials in the present invention, the gear drops onto the buffer rack, and the conductive bar on the edge of the gear contacts the conductive sheet to energize the second magnet. The second magnet generates magnetism and adsorbs to the first magnet. Among them, the first magnet is a strong magnetic force magnet. The first magnet drives the insertion bar to quickly contract into the disassembly groove. The mounting block loses the limit of the insertion bar and quickly rebounds into the assembly groove under the strong pulling force of the strong spring. During the pulling-back process, due to the limitation of the slider with the strip groove and the spiral groove, the slider first passes through 0.5 spiral grooves, causing the mounting block to quickly rotate 180 degrees, rotating the limiting block downward to prevent the limiting block from blocking the detachment of the hanging part during retraction. When passing through the strip groove, the mounting block directly retracts to the innermost end of the assembly groove, and the outer end of the mounting block is completely separated from the hanging part. The hanging part loses support and the materials freely fall to the ground. Description of the Drawings

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Stereogram of an emergency dropping device suspended by a drone provided by the present invention;

[0025] Figure 2 Assembly schematic diagram of the dropping frame and the hanging part of an emergency dropping device suspended by a drone provided by the present invention;

[0026] Figure 3 Assembly schematic diagram of the dropping frame and the recovery frame of an emergency dropping device suspended by a drone provided by the present invention;

[0027] Figure 4 Assembly structure schematic diagram of the inner frame and the arc teeth of an emergency dropping device suspended by a drone provided by the present invention;

[0028] Figure 5 Assembly structure schematic diagram of the arc frame and the arc teeth of an emergency dropping device suspended by a drone provided by the present invention;

[0029] Figure 6 Position schematic diagram of the gear and the buffer support of an emergency dropping device suspended by a drone provided by the present invention;

[0030] Figure 7 Assembly schematic diagram of the gear and the mounting block of an emergency dropping device suspended by a drone provided by the present invention;

[0031] Figure 8 Of an emergency dropping device suspended by a drone provided by the present invention Figure 7 Enlarged schematic diagram of the structure at position A;

[0032] Figure 9 Internal structure schematic diagram of the gear of an emergency dropping device suspended by a drone provided by the present invention.

[0033] Legend:

[0034] 1. Mounting frame; 2. Feeding frame; 3. Hanging part; 411. Outer frame; 412. Inner frame; 413. Arc-shaped tooth; 4131. Arc-shaped plate; 4132. Tooth block; 4133. Inner groove; 414. Gear; 511. Feeding groove; 512. Discharging groove; 6. Baffle; 7. Partition block; 811. Connecting shaft; 812. Mounting block; 813. Card slot; 814. Card block; 911. Arc-shaped frame; 912. Side groove; 913. Linking bar; 914. First cylinder; 921. Mounting seat; 922. Second cylinder; 923. Connecting block; 924. Arc-shaped groove; 931. Recycling frame; 932. Access door; 933. Buffer frame; 941. Support; 942. Buffer support; 943. First spring; 951. Conductive sheet; 952. Conductive bar; 961. Assembly groove; 962. Spiral groove; 963. Slide block; 964. Strong spring; 965. Limit block; 966. Strip-shaped groove; 971. Disassembly groove; 972. Second spring; 973. Insert bar; 974. Insert slot; 975. First magnet; 976. Second magnet. Detailed implementation manners

[0035] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0036] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0037] Secondly, as used herein, "one embodiment" or "an embodiment" refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or alternative embodiments that exclude other embodiments.

[0038] Please refer to Figures 1 - 9, the present invention provides a technical solution: an emergency dropping device for an unmanned aerial vehicle with a hanging structure, including a mounting frame 1, a dropping frame 2, and a hanging member 3 for hanging materials. There are two dropping frames 2, which are symmetrically arranged on both sides below the mounting frame 1. The upper part of the mounting frame 1 is used for bolted assembly connection with the unmanned aerial vehicle. The dropping frame 2 includes an outer frame 411, an inner frame 412, an arc-shaped tooth 413, and a gear 414. The inner frame 412 is arranged inside the outer frame 411 and is concentric with the outer frame 411. There are two arc-shaped teeth 413, which are symmetrically and slidably arranged on both sides of the outer arc surface of the inner frame 412. A driving mechanism is arranged inside the inner frame 412, and the two arc-shaped teeth 413 are respectively driven to slide by the driving mechanism. There are multiple gears 414, which are slidably arranged between the inner frame 412 and the outer frame 411. The outer wall of the gear 414 is meshed with the arc-shaped tooth 413. The arc-shaped tooth 413 includes an arc-shaped plate 4131 and a tooth block 4132. A plurality of inner grooves 4133 are arranged on one side of the arc-shaped plate 4131 facing the outer frame 411. A plurality of tooth blocks 4132 are evenly arranged, and the tooth blocks 4132 are slidably arranged in the inner grooves 4133 in an adjustable manner. The two gears 414 at the coaxial positions on the two dropping frames 2 are respectively detachably assembled with the hanging member 3. The other end of the hanging member 3 is used for assembling with the materials. An inlet groove 511 and an outlet groove 512 are respectively arranged above and below the outer frame 411, and a baffle 6 is arranged at the lower end of the arc-shaped plate 4131.

[0039] As Figures 1 - 9 shown, the length of the arc-shaped plate 4131 is less than half of the circumference of the inner frame 412. When the upper ends of the two arc-shaped plates 4131 are in contact with each other, the baffle 6 is slidably arranged on the inner wall of the end face of the outer frame 411. A spacer block 7 is arranged between adjacent gears 414. By making the length of the arc-shaped plate 4131 less than half of the circumference of the inner frame 412, it is convenient for the up and down movement of the arc-shaped plate 4131, thereby driving the movement of the gear 414 between the inner frame 412 and the outer frame 411. Through the arranged spacer block 7, it is avoided that the two gears 414 are too close to each other, resulting in the meshing of adjacent gears 414.

[0040] As Figures 1 - 9 shown, a connecting shaft 811 is detachably arranged between the two symmetrically arranged gears 414. An installation block 812 is slidably arranged at the central position of the gear 414. A clamping groove 813 is arranged above one end of the installation block 812. The two ends of the connecting shaft 811 are symmetrically provided with clamping blocks 814 that are engaged with the clamping groove 813. When the connecting shaft 811 is engaged with the gear 414, the clamping blocks 814 can be engaged with the clamping groove 813. After the assembled gears 414 are installed in the dropping frame 2, the two gears 414 can be kept in a symmetrical position. After the installation of the gears 414 is completed, the connecting shaft 811 can be slid out.

[0041] As Figures 1 - 9As shown, an arc-shaped frame 911 is slidably provided at the edge of the inner arc surface of the inner frame 412. Side grooves 912 are symmetrically provided on both sides of the inner frame 412. Linkage bars 913 that are slidably arranged with the side grooves 912 are symmetrically provided on both sides of the arc-shaped frame 911. The linkage bars 913 are assembled and connected to the end surface of the tooth block 4132. A first air cylinder 914 is provided inside the delivery rack 2. The first air cylinder 914 is slidably connected to the arc-shaped frame 911. The direction of the inner groove 4133 is consistent with the pulling direction of the first air cylinder 914. The linkage bar 913 is not connected to the upper tooth block 4132. When it is necessary to retract the tooth block 4132 into the inner groove 4133, the first air cylinder 914 is retracted, driving the arc-shaped frame 911 away from the inner frame 412 so that the linkage bar 913 pulls the tooth block 4132 into the inner groove 4133.

[0042] As Figures 1 - 9 shown, the drive mechanism includes a mounting seat 921 and a second air cylinder 922. Two sets of drive mechanisms are provided to drive and slide the arc-shaped plates 4131 on both sides. The mounting seat 921 is arranged in the lower middle of the inner arc surface of the inner frame 412. The lower end of the second air cylinder 922 is hinged to the mounting seat 921. The upper end of the second air cylinder 922 is hinged to the upper middle of the arc-shaped plate 4131 through a connecting block 923. An arc-shaped groove 924 for slidably arranging the connecting block 923 is provided on the inner frame 412. By driving the second air cylinder 922, the arc-shaped plate 4131 is driven to engage and slide with the inner frame 412, realizing the discharging of the gear 414.

[0043] As Figures 1 - 9 shown, a recovery rack 931 is communicated and provided on the delivery rack 2 below the discharge chute 512. An access door 932 is provided on one side below the recovery rack 931. A buffer rack 933 is provided above the inside of the recovery rack 931. Through the provided recovery rack 931, the gear 414 separated from the materials after being delivered is recovered for next use.

[0044] As Figures 1 - 9 shown, both sides of the buffer rack 933 are assembled and connected to both sides of the inner wall of the recovery rack 931. A support 941 is provided below the buffer rack 933. Buffer supports 942 are rotatably provided on both sides of the buffer rack 933. The lower sides of the buffer supports 942 are assembled and connected to the side walls of the support 941 through first springs 943. When the gear 414 or the spacer 7 falls onto the buffer support 942, one side of the buffer support 942 is squeezed and unfolded under the action of gravity and falls into the recovery rack 931 from this side. After falling, the first spring 943 resets.

[0045] As Figures 1 - 9 shown, a power supply is provided on the recovery rack 931. A conductive sheet 951 electrically connected to the power supply is provided above the buffer rack 933. A conductive bar 952 is provided at the edge of the gear 414. Through the cooperation of the conductive bar 952 and the conductive sheet 951, it is used for the separation of the hanging part 3 and the gear 414.

[0046] AsFigures 1 - 9 As shown, an assembly groove 961 is provided at the center position on one side of the gear 414. The mounting block 812 is slidably arranged in the assembly groove 961. A strip groove 966 and a spiral groove 962 are provided inside the assembly groove 961. One end of the strip groove 966 is communicated with the spiral groove 962, and the number of spiral turns of the spiral groove 962 is 0.5 turns. The spiral groove 962 is arranged close to the mounting block 812. A slider 963 that is slidably arranged with the strip groove 966 and the spiral groove 962 is provided on the mounting block 812. One end of the assembly groove 961 is assembled and connected with the mounting block 812 through a strong spring 964. A limit block 965 is provided above the outer end of the mounting block 812. A clamping groove 813 is provided on the limit block 965. One end of the hanging part 3 is slidably sleeved on the mounting block 812. The provided limit block 965 is used for the stability when the hanging part 3 is sleeved on the mounting block 812, achieving an anti-slip effect.

[0047] As Figures 1 - 9 As shown, a disassembly groove 971 is communicated and provided above the assembly groove 961. An insertion bar 973 is provided in the disassembly groove 971 through a second spring 972. A slot 974 that is slidably engaged with the insertion bar 973 is provided on the mounting block 812. The lower end of the insertion bar 973 is inclined on the side away from the limit block 965. A first magnet 975 is provided at the upper end of the insertion bar 973. A second magnet 976 that is mutually adsorbed with the first magnet 975 is provided at the upper end of the slot 974. One end of the conductive bar 952 is assembled and connected with the second magnet 976. When feeding materials, the gear 414 drops onto the buffer frame 933. The conductive bar 952 on the edge of the gear 414 contacts the conductive sheet 951, energizing the second magnet 976. The second magnet 976 generates magnetism and adsorbs with the first magnet 975. Among them, the first magnet 975 is a strong magnetic force magnet. The first magnet 975 drives the insertion bar 973 to quickly contract into the disassembly groove 971. The mounting block 812 loses the limit of the insertion bar 973 and quickly rebounds into the assembly groove 961 under the strong pulling force of the strong spring 964. During the pulling-back process, due to the limitation of the slider 963 with the strip groove 966 and the spiral groove 962, the slider 963 first passes through 0.5 spiral grooves 962, causing the mounting block 812 to quickly rotate 180 degrees, turning the limit block 965 to the lower side to prevent the limit block 965 from blocking the detachment of the hanging part 3 during retraction. When passing through the strip groove 966, the mounting block 812 directly retracts to the innermost end of the assembly groove 961. The outer end of the mounting block 812 is completely separated from the hanging part 3, and the hanging part 3 loses support and freely falls to the ground with the materials.

[0048] Working principle: When placing materials on the drone, first contract the tooth blocks 4132 on the arc-shaped plate 4131 into the inner groove 4133, and link the two gears 414 through the connecting shaft 811. Then, place the two gears 414 into the space between the inner frame 412 and the outer frame 411 through the feeding groove 511. After placing the gears 414, place the spacer 7. Repeat the above steps to place multiple gears 414. After placement, remove the tooth blocks 4132 from the inner groove 4133 to engage with the gears 414 and remove the connecting shaft 811. When taking the materials to be dropped, assemble and connect one end of the hanging part 3 to the end face of the material, which can be achieved by hooking and buckling. The other end of the hanging part 3 is assembled and connected to the gear 414. After the drone takes off to a designated location, start the driving mechanism to drive the arc-shaped plate 4131 on one side to slide downward. Since the gear 414 meshes with the tooth block 4132, it drives the lower gear 414 to slide out from the discharging groove 512. After sliding out, the hanging part 3 is separated from the gear 414, and the hanging part 3 falls freely with the material to the designated location. The gear 414 and a spacer 7 fall into the recovery rack 931 for recovery. The driving mechanism drives the arc-shaped plate 4131 on this side to move upward and reset, driving the other gears 414 on this side to move upward accordingly, and contracting the tooth blocks 4132 into the inner groove 4133. At this time, the gear 414 lacks support and slowly slides downward under the action of gravity until the gear 414 contacts the baffle 6. Then, remove the tooth blocks 4132 from the inner groove 4133 again to engage with the gears 414, realizing the complete dropping of one material. The drone flies to the next location and repeats the above steps for the dropping of the next material. The dropping of the second material is achieved by driving the arc-shaped plate 4131 on the other side to drive the materials on the lower side of the other side to fall and be dropped. By alternately dropping the materials on both sides in the dropping rack 2, it is avoided that one side of the drone is too heavy and the other side is too light, resulting in unstable flight and ensuring flight safety.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An emergency delivery device for hanging from a drone, characterized in that: The invention comprises a mounting frame (1), a delivery frame (2) and a hanging part (3) for hanging materials, wherein the delivery frame (2) is provided with two and symmetrically arranged on both sides below the mounting frame (1), and the top of the mounting frame (1) is used for bolt assembly connection with a drone, and the delivery frame (2) comprises an outer frame (411), an inner frame (412), arc-shaped teeth (413) and a gear (414), wherein the inner frame (412) is arranged inside the outer frame (411) and is arranged concentrically with the outer frame (411), wherein the arc-shaped teeth (413) are provided with two and symmetrically slidably arranged on both sides of the outer arc surface of the inner frame (412), wherein a driving mechanism is arranged inside the inner frame (412), and the two arc-shaped teeth (413) are respectively driven to slide by the driving mechanism, and the gear (414) The inner frame (412) and the outer frame (411) are provided with a plurality of gears (414) and are slidably arranged between the inner frame (412) and the outer frame (411). The outer wall of the gear (414) is meshed with the arc-shaped teeth (413). The arc-shaped teeth (413) include an arc-shaped plate (4131) and a tooth block (4132). The arc-shaped plate (4131) is provided with a plurality of inner grooves (4133) on one side facing the outer frame (411). The tooth blocks (4132) are evenly provided with a plurality of gear blocks (4132). The tooth blocks (4132) are adjustable and slidably arranged in the inner grooves (4133). The two gears (414) at coaxial positions on the two delivery racks (2) are respectively detachably assembled with the hanging parts (3). The other end of the hanging parts (3) is used for assembly and connection with materials. The outer frame (411) ) are provided with a feed trough (511) and a discharge trough (512) above and below, respectively; a baffle (6) is provided at the lower end of the arc plate (4131); the length of the arc plate (4131) is less than half of the circumference of the inner frame (412); when the upper ends of the two arc plates (4131) are in abutment with each other, the baffle (6) and the inner wall of the end surface of the outer frame (411) are slidably arranged; a spacer (7) is provided between adjacent gears (414); a detachable connecting shaft (811) is provided between two symmetrically arranged gears (414); a mounting block (812) is slidably provided at the center of the gear (414); a slot (813) is provided above one end of the mounting block (812); and two ends of the connecting shaft (811) are symmetrically provided with slots (813) corresponding to the gears (414). The card block (814) is engaged with the card slot (813), an arc frame (911) is slidably provided at the edge of the inner arc surface of the inner frame (412), side grooves (912) are symmetrically provided on both sides of the inner frame (412), linkage bars (913) slidably provided with the side grooves (912) are symmetrically provided on both sides of the arc frame (911), and the linkage bars (913) are assembled and connected with the end faces of the tooth blocks (4132), a first cylinder (914) is provided inside the delivery rack (2), the first cylinder (914) is slidably connected with the arc frame (911), the direction of the inner groove (4133) is consistent with the pulling direction of the first cylinder (914), and a recovery rack (931) is connected to the delivery rack (2) below the discharge chute (512),An access door (932) is provided at one side below the recovery rack (931), and a buffer rack (933) is provided at the top inside the recovery rack (931).

2. The drone hanging emergency delivery device according to claim 1, characterized in that: The driving mechanism comprises a mounting seat (921) and a second cylinder (922), the driving mechanism being provided with two groups for driving the arc-shaped plates (4131) on both sides to slide respectively, the mounting seat (921) being arranged at the middle and lower part of the inner arc surface of the inner frame (412), the lower end of the second cylinder (922) being hingedly arranged on the mounting seat (921), the upper end of the second cylinder (922) being hingedly arranged at the middle and upper part of the arc-shaped plate (4131) via a connecting block (923), and the inner frame (412) being provided with an arc-shaped groove (924) slidably arranged with the connecting block (923).

3. The drone hanging emergency delivery device according to claim 1, characterized in that: The two sides of the buffer frame (933) are assembled and connected to the two sides of the inner wall of the recovery frame (931); a bracket (941) is provided below the buffer frame (933); buffer supports (942) are rotatably provided on the two sides of the buffer frame (933); the buffer supports (942) are assembled and connected to the side walls of the bracket (941) below via a first spring (943).

4. The drone hanging emergency delivery device according to claim 3, characterized in that: A power source is provided on the recovery frame (931), a conductive sheet (951) electrically connected to the power source is provided above the buffer frame (933), and a conductive strip (952) is provided at the edge of the gear (414).

5. The drone hanging emergency delivery device according to claim 4, characterized in that: A mounting groove (961) is provided at the center of one side of the gear (414), the mounting block (812) is slidably arranged in the mounting groove (961), a strip groove (966) and a spiral groove (962) are arranged inside the mounting groove (961), one end of the strip groove (966) is connected to the spiral groove (962), and the number of spiral turns of the spiral groove (962) is 0.5 turns. The spiral groove (962) is arranged close to the mounting block (812), and the mounting block (812) is provided with a plurality of strip grooves (966) and a plurality of spiral grooves (962). The block (812) is provided with a sliding block (963) slidably arranged with the strip groove (966) and the spiral groove (962); one end of the assembly groove (961) is assembled and connected with the mounting block (812) via a strong spring (964); a limit block (965) is arranged above the outer end of the mounting block (812); the locking groove (813) is arranged on the limit block (965); and one end of the hanging component (3) is slidably sleeved on the mounting block (812).

6. The drone hanging emergency delivery device according to claim 5, characterized in that: A disassembly groove (971) is provided above the assembly groove (961), an insertion strip (973) is provided in the disassembly groove (971) via a second spring (972), a slot (974) is provided on the mounting block (812) and is slidably engaged with the insertion strip (973), a side of the lower end of the insertion strip (973) away from the limit block (965) is inclined, a first magnetic block (975) is provided at the upper end of the insertion strip (973), a second magnetic block (976) is provided at the upper end of the slot (974) and is attracted to the first magnetic block (975), and one end of the conductive strip (952) is assembled and connected with the second magnetic block (976).

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