An unmanned aerial vehicle automatic escape device

Abstract

The utility model discloses an unmanned plane automatic escape device belongs to unmanned plane technical field, including unmanned plane body, the landing gear of unmanned plane body is equipped with mounting panel, and the below of mounting panel is fixed with fixed plate, and the circumference of this fixed plate is distributed with a plurality of clamping claws, and clamping claw is rotatably connected with fixed plate, and the lower end of a plurality of clamping claws is clamped in the ring, still be equipped with drive assembly on mounting panel, and this drive assembly is used for driving clamping claw to rotate around its connecting point with fixed plate in vertical plane, and when the lower end of clamping claw opens outward, the ring falls off from the lower end of a plurality of clamping claws, and the central position of a plurality of clamping claws is equipped with support, and the support is equipped with spring plunger, and one end of spring plunger is connected with support, and the other end is connected with the clamping claw of corresponding position. The utility model discloses compared with prior over dead point release device, and the whole mechanical structure is more simple, and the release process is more easy to realize, and can independently rebound to original position after releasing goods.

Description

TECHNICAL FIELD

[0001] The utility model relates to an unmanned plane technical field, concretely relates to an unmanned plane automatic escape device. BACKGROUND

[0002] When the unmanned plane transports goods, the rope is easy to be caught by ground stones or to be knotted with branches on the tree, or the hook is hung on the branch, so that the unmanned plane cannot break free to continue flying, and the unmanned plane cannot be normally recycled, which brings a safety hazard to the unmanned plane transportation and affects the popularization and use of the unmanned plane.

[0003] The patent with the publication number CN118618647A discloses an unmanned plane emergency escape device and unmanned plane, which mainly comprises a rack fixed on the main body of the unmanned plane, a cargo carrying piece capable of limiting the cargo, and a linkage structure; the lower end of the rack and one end of the cargo carrying piece are connected together in a rotatable manner, so that the cargo carrying piece can swing on the rack to form a loading state and an unloading state; the linkage structure at least comprises an upper half connecting rod and a lower half connecting rod; one end of the upper half connecting rod is connected together with the lower end of the rack in a rotatable manner, the other end is connected together with one end of the lower half connecting rod in a rotatable manner, and the other end of the lower half connecting rod is connected together with the cargo carrying piece in a rotatable manner; when the rotating end of the lower half connecting rod and the upper half connecting rod is close to the cargo carrying piece, the included angle between the lower half connecting rod and the upper half connecting rod is obtuse, forming a linkage structure over the dead point, the cargo carrying piece can load the cargo, and the gravity of the cargo carrying piece and the cargo can be used to ensure that the linkage structure is always in the over dead point state; when the rotating end of the lower half connecting rod and the upper half connecting rod is away from the cargo carrying piece, the included angle between the lower half connecting rod and the upper half connecting rod is acute, and the dead point state is separated, the cargo carrying piece can swing downward to release the cargo and complete the escape.

[0004] When carrying an overload or being stuck, the above-mentioned patent breaks the dead point of the connecting rod mechanism through the power component to achieve the release effect. This over dead point release mode is relatively redundant in overall structure, and cannot automatically restore to the original state after releasing the load. UTILITY MODEL CONTENTS

[0005] In view of the existing technical problems, the utility model provides an unmanned plane automatic escape device to solve the problem that the over dead point release escape mode in the prior art cannot automatically restore to the original state after releasing the load.

[0006] In order to achieve the above-mentioned invention purpose, the utility model provides the following technical scheme: The unmanned aerial vehicle automatic escape device comprises an unmanned aerial vehicle body, a mounting plate arranged on the landing gear of the unmanned aerial vehicle body, a fixed plate arranged below the mounting plate, a plurality of clamping claws distributed in the circumferential direction of the fixed plate, the clamping claws being rotationally connected with the fixed plate, and a lifting ring being clamped at the lower ends of the plurality of clamping claws. A driving assembly is further arranged on the mounting plate, the driving assembly being used to drive the clamping claws to rotate in a vertical plane about the connecting points of the clamping claws with the fixed plate, and when the lower ends of the clamping claws are opened outward, the lifting ring is detached from the lower ends of the plurality of clamping claws. A support is arranged at the central position of the plurality of clamping claws, a plurality of spring plungers are arranged on the support, one end of each spring plunger is connected with the support, and the other end of each spring plunger is connected with the corresponding clamping claw.

[0007] According to the above technical scheme, when escape is needed, the driving assembly drives the clamping claws to rotate about the connecting points of the clamping claws with the fixed plate, the spring plungers are compressed, the lower ends of the clamping claws are opened outward, the lifting ring is detached from the lower ends of the plurality of clamping claws, the automatic escape of the unmanned aerial vehicle is realized, and then the clamping claws rebound to the clamping state under the action of the spring plungers.

[0008] Preferably, the upper ends of the clamping claws are inwardly inclined.

[0009] Preferably, the driving assembly comprises a linear motor arranged on the mounting plate, a push rod is connected with the motor shaft of the linear motor, the push rod is connected with a limiting plate after penetrating through the mounting plate, a limiting through hole is arranged in the middle of the limiting plate, the upper ends of the clamping claws can extend into the limiting through hole in the downward movement of the limiting plate, and the clamping claws can rotate about the connecting points of the clamping claws with the fixed plate under the action of the limiting through hole.

[0010] According to the above technical scheme, the linear motor pushes the limiting plate to move downward through the push rod, the upper ends of the plurality of clamping claws extend into the limiting through hole, since the upper ends of the clamping claws are inwardly inclined, the clamping claws rotate about the connecting points of the clamping claws with the fixed plate under the action of the limiting through hole as the limiting plate continues to move downward, the upper ends of the plurality of clamping claws are continuously tightened, the lower ends of the clamping claws are opened outward, and then the lifting ring is detached from the lower ends of the clamping claws.

[0011] Preferably, the limiting through hole is a tapered hole.

[0012] Preferably, the lower ends of the clamping claws are bent inward to form support portions, and the upper ends of the lifting ring are supported on the support portions.

[0013] Preferably, a pressure sensor is arranged on the support portions of the clamping claws, and the pressure sensor is electrically connected with the linear motor.

[0014] The scheme, when the unmanned aerial vehicle carries goods, if the goods are entangled by branches and the like, or the carried goods exceed the rated weight of the unmanned aerial vehicle, the pressure value obtained by the pressure sensor of the clamping claw exceeds the threshold value, the pressure sensor will transmit the corresponding signal to the linear motor, so as to start the linear motor.

[0015] Preferably, the lower end of the mounting plate is fixed with a limiting cylinder, the fixing plate is fixed in the limiting cylinder, the upper end of the clamping claw is located in the limiting cylinder, the lower end of the clamping claw extends out of the lower end of the limiting cylinder, and the limiting plate moves up and down in the limiting cylinder.

[0016] Preferably, the outer periphery of the fixing plate is uniformly distributed with recesses recessed inward, and the clamping claw is rotatably connected to the two side walls of the recess through a rotating shaft.

[0017] Compared with the prior art, the utility model has the advantages that: compared with the existing dead point release device, the overall mechanical structure is more simple, the release process is easier to realize, and after releasing the goods, it can automatically rebound to the original state. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the utility model; Figure 2 It is the partial structure schematic diagram in Figure 1 Figure 3 It is the structure schematic diagram after removing the limiting cylinder in Figure 2 Figure 4 It is the structure schematic diagram after removing the limiting plate in Figure 3 Figure 5 It is the structure schematic diagram of the clamping claw in Figure 2 Figure 6 It is the structure state schematic diagram after releasing the lifting ring. Figure 3 DETAILED DESCRIPTION

[0019] The utility model will be further described in detail below in combination with test examples and specific embodiments. However, this should not be understood as the scope of the above-mentioned subject matter of the utility model being limited to the following examples only, and any technology realized based on the content of the utility model belongs to the scope of the utility model.

[0020] ​​​​​In the description of the utility model, need understanding is, the term "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the device or element must have a particular orientation, with a particular orientation configuration and operation, therefore it can not be understood as the limitation of the utility model.

[0021] As shown in the accompanying Figure 1 - the Figure 5 As shown in the accompanying

[0022] The outer periphery of the fixed plate 10 in the embodiment is uniformly distributed with recesses recessed inward, and the clamping claws 7 are rotatably connected to the two side walls of the recesses through the rotating shafts 11.

[0023] In order to facilitate the placement and falling of the lifting ring 8, the lower end of the clamping claw 7 is bent inward to form a support portion 71 in the embodiment, and the upper end of the lifting ring 8 is supported on the support portion 71, so that when the lower end of the clamping claw 7 is opened outward, the lifting ring 8 can directly fall off from the lower end of the clamping claw 7.

[0024] In order to realize the rotation of the clamping claw 7, the upper end of the clamping claw 7 is inclined inward, and a driving assembly is further arranged on the mounting plate 5, which is used to drive the clamping claw 7 to rotate in the vertical plane around the connecting point of the clamping claw 7 and the fixed plate 10, and when the lower end of the clamping claw 7 is opened outward, the lifting ring 7 falls off from the lower end of the clamping claw 7.

[0025] A support 12 is arranged at the center position of the four clamping claws 7, and the support 12 is provided with spring plungers 13 which are the same in number as the clamping claws 7, one end of the spring plunger 13 is connected with the support 12, and the other end is connected with the clamping claw 7 at the corresponding position.

[0026] In the embodiment, the driving assembly comprises a motor bracket 4 arranged on the mounting plate 5, a linear motor 2 is arranged on the motor bracket 4, a motor shaft of the linear motor 2 is connected with a push rod 3, the push rod 3 is arranged through the mounting plate 5, a lower end of the push rod 3 is connected with a limiting plate 9, the limiting plate 9 is located in a limiting cylinder 6, and the limiting plate 9 moves up and down in the limiting cylinder 6 under the driving of the push rod 3.

[0027] A limiting through hole 91 is arranged in the middle of the limiting plate 9, and the limiting through hole 91 is preferably a tapered hole in the embodiment; during the downward movement of the limiting plate 9, the upper end of the clamping jaw 7 is inwardly inclined, so that the upper end of the clamping jaw 7 can extend into the limiting through hole 91 and drive the clamping jaw 7 to rotate around the connecting point of the clamping jaw 7 and the fixed plate 10, so that the upper end of the clamping jaw 7 is continuously tightened, and the lower end of the clamping jaw 7 is continuously opened outward.

[0028] A pressure sensor 14 is arranged on the supporting portion 71 of the clamping jaw 7, and the pressure sensor 14 is electrically connected with the linear motor 2.

[0029] The use process of the utility model is as follows: When the unmanned aerial vehicle carries goods to fly, if the goods are entangled by objects such as branches, or the carried goods exceed the rated weight of the unmanned aerial vehicle, the pressure value obtained by the pressure sensor 14 on the clamping jaw 7 exceeds the threshold value, the linear motor 2 is started, the motor shaft moves downward, the limiting plate 9 is driven downward by the push rod 3, the limiting through hole 91 is arranged on the limiting plate 9, the inner wall of the limiting through hole 91 extrudes the clamping jaw 7 during the downward movement of the limiting plate 9, the top of the clamping jaw 7 is continuously tightened, the clamping jaw 7 rotates around the rotating shaft 11, the spring plunger 13 is compressed, the lower end of the clamping jaw 7 is opened, and the lifting ring 8 is released and falls off (for reference Figure 6 ). At this time, the pressure value of the pressure sensor 14 is empty, after reading the release of the goods, the linear motor 2 is reversed, the motor shaft moves upward, drives the limiting plate 9 to return to the original position and stops, and the clamping jaw 7 is rebounded to the clamping state under the action of the spring plunger 13.

[0030] The above describes the preferred embodiment of the utility model. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the utility model. Therefore, any technical scheme obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the utility model shall be within the protection scope determined by the claims.

Claims

1. An automatic escape device for unmanned aerial vehicles (UAVs), comprising a UAV body (1), wherein the landing gear of the UAV body (1) is provided with a mounting plate (5), characterized in that: A fixing plate (10) is provided below the mounting plate (5). Multiple clamping claws (7) are distributed around the fixing plate (10). The clamping claws (7) are rotatably connected to the fixing plate (10). The lifting ring (8) is engaged with the lower end of the multiple clamping claws (7). The mounting plate (5) is also provided with a drive assembly, which is used to drive the clamping claw (7) to rotate in the vertical plane around its connection point with the fixing plate (10), and when the lower end of the clamping claw (7) opens outward, the lifting ring (8) falls off from the lower end of the plurality of clamping claws (7); A bracket (12) is provided at the center of the plurality of gripping claws (7). The bracket (12) is provided with the same number of spring plungers (13) as the gripping claws (7). One end of the spring plunger (13) is connected to the bracket (12), and the other end is connected to the gripping claw (7) at the corresponding position.

2. The automatic escape device for unmanned aerial vehicles according to claim 1, characterized in that: The upper end of the clamping claw (7) is inclined inward.

3. The automatic escape device for unmanned aerial vehicles according to claim 2, characterized in that: The drive assembly includes a linear motor (2) mounted on the mounting plate (5). The motor shaft of the linear motor (2) is connected to a push rod (3). The push rod (3) passes through the mounting plate (5) and is connected to a limiting plate (9). A limiting through hole (91) is provided in the middle of the limiting plate (9). During the downward movement of the limiting plate (9), the upper end of the clamping claw (7) can extend into the limiting through hole (91) and drive the clamping claw (7) to rotate around its connection point with the fixing plate (10) under the action of the limiting through hole (91).

4. The automatic escape device for unmanned aerial vehicles according to claim 3, characterized in that: The limiting through hole (91) is a tapered hole.

5. The automatic escape device for unmanned aerial vehicles according to claim 3, characterized in that: The lower end of the clamping claw (7) is bent inward to form a support part (71), and the upper end of the lifting ring (8) is supported on the support part (71).

6. The automatic escape device for unmanned aerial vehicles according to claim 5, characterized in that: A pressure sensor (14) is provided on the support part (71) of the gripper (7), and the pressure sensor (14) is electrically connected to the linear motor (2).

7. The automatic escape device for unmanned aerial vehicles according to claim 3, characterized in that: The lower end of the mounting plate (5) is fixed with a limiting cylinder (6), the fixing plate (10) is fixed inside the limiting cylinder (6), the upper end of the clamping claw (7) is located inside the limiting cylinder (6), the lower end of the clamping claw (7) extends out of the lower end of the limiting cylinder (6), and the limiting plate (9) moves up and down inside the limiting cylinder (6).

8. The automatic escape device for unmanned aerial vehicles according to claim 1, characterized in that: The outer periphery of the fixing plate (10) is evenly distributed with inwardly recessed grooves, and the clamping claws (7) are rotatably connected to the two side walls of the grooves via a rotating shaft (11).

Images