Unmanned aerial vehicle (UAV) hoisting failure protection device

Abstract

This utility model belongs to the field of hoisting drone technology, specifically relating to a drone hoisting failure protection device. The drone hoisting failure protection device includes: a fixed part and a detachable part for connecting the drone and the hoisting tool respectively; a locking groove member rotatably mounted on the fixed part, having a bearing groove and a sliding groove connected to the bearing groove; a locking fastener for supporting the detachable part; the locking fastener having teeth; and a driver that, in the event of a rigid-flexible switching failure, drives the locking groove member to rotate circumferentially relative to the locking fastener in a preset direction, causing the teeth of the locking fastener to slide out from the bearing groove into the sliding groove, thereby separating the detachable part from the fixed part. In other words, the drone hoisting failure protection device of this application can detach the hoisting tool from the drone in the event of a rigid-flexible switching failure, thus effectively ensuring the normal landing of the drone.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting drone technology, specifically relating to a drone hoisting failure protection device. Background Technology

[0002] In the design of lifting drones, the traditional rigid connection between the drone and the grasping tool provides strong stability when the drone grasps an object. However, during takeoff or flight, the rigid connection may cause significant shaking of the drone, affecting stability. While a flexible connection can effectively reduce the shaking transmitted to the drone body when grasping goods, it can lead to the object rotating during flight, affecting flight stability. Therefore, a device that switches between rigid and flexible connections is applied in lifting operations. For example, patent CN119058954A discloses an outdoor automatic loading and unloading drone, which is equipped with an upper support hinge rod, a hinge component, a lower support hinge rod, and a rigid conversion component. The lower support hinge rod is flexibly connected to the drone through the upper support hinge rod and the hinge component, preventing the shaking drone from affecting the automatic loading and unloading of goods when outdoor winds are strong. After the automatic loading and unloading of goods is completed, the lower support hinge rod is radially rigidly connected to the drone through the rigid conversion component, preventing the goods from shaking relative to the drone during flight transfer, thus improving flight stability and flight safety.

[0003] However, when drones are used for cargo lifting operations, they may face system failures that could lead to a failure in the transition from rigid to flexible configurations. In the rigid configuration, the drone may be unable to land safely or even crash. Therefore, designing a device that can protect the drone and ensure a safe landing in the event of a transition failure is of paramount importance. Utility Model Content

[0004] The purpose of this invention is to provide a drone lifting failure protection device to solve the technical problem that the drone cannot land safely when the rigid-flexible switching of the lifting drone fails.

[0005] This application provides a drone hoisting failure protection device, which includes:

[0006] The mounting part is used to connect the drone;

[0007] The detachable part slides up and down with the fixed part for connecting lifting tools;

[0008] The locking groove is rotatably mounted on the fixed part, and has a bearing groove and a sliding groove connected to the bearing groove.

[0009] A locking element for supporting a detachable part; the locking element is provided with teeth; wherein, when the teeth are located in a supporting groove, the locking element is suspended on a locking groove; when the teeth enter a sliding groove, the locking element disengages from the locking groove; and

[0010] The driver is used to drive the locking groove to rotate circumferentially relative to the locking fastener in a preset direction, so that the teeth of the locking fastener slide out from the bearing groove into the sliding groove, thereby separating the separable part from the fixed part.

[0011] In one embodiment of this application, a plurality of columns are provided at the lower end of the fixing part;

[0012] The upper end of the detachable part is provided with a guide sleeve for inserting the corresponding column.

[0013] In one embodiment of this application, the fixing part includes: a fixing plate, wherein the fixing plate is provided with a first through hole;

[0014] The locking groove is inserted into the first through hole, and its upper and lower parts are located on the upper and lower sides of the fixing plate, respectively. The upper end of the locking groove is provided with a first locking block with an outer diameter larger than the inner diameter of the first through hole, and the lower end is provided with the bearing groove and the sliding groove.

[0015] In one embodiment of this application, a retaining ring protrudes from the outer wall of the lower end of the locking groove member;

[0016] A first spring is sleeved on the lower outer periphery of the locking groove;

[0017] The upper and lower ends of the first spring abut against the fixed plate and the retaining ring, respectively.

[0018] In one embodiment of this application, a lever is provided at the upper end of the locking groove member;

[0019] The driver is a push rod motor, used to push the lever to drive the locking groove to rotate circumferentially.

[0020] In one embodiment of this application, the locking groove is further provided with an upper extension groove;

[0021] The two ends of the bearing groove are respectively connected to the upper extension groove and the lower slide groove;

[0022] The bearing groove is set horizontally, and the upper extension groove and the lower extension groove are both inclined in the same direction.

[0023] In one embodiment of this application, the separable portion includes: a support plate, wherein a second through hole is provided on the support plate;

[0024] The locking element is inserted into the second through hole, and its upper and lower parts are located on the upper and lower sides of the support plate, respectively; the upper part of the locking element is provided with the teeth, and the lower part is provided with a second locking block with an outer diameter larger than the inner diameter of the second through hole.

[0025] In one embodiment of this application, the upper end of the locking member is provided with a sleeve for fitting around the outer periphery of the lower end of the locking groove member;

[0026] The sleeve has teeth on its inner wall.

[0027] In one embodiment of this application, a second spring is provided on the outer periphery of the upper part of the locking member;

[0028] The upper and lower ends of the second spring abut against the sleeve and the bearing plate, respectively.

[0029] In one embodiment of this application, a fixing sleeve is provided on the lower surface of the bearing plate;

[0030] The fixed sleeve is provided with a third through hole, and the third through hole is provided with a plurality of sliding grooves;

[0031] The lower end of the locking element passes through the third through hole, and the outer wall of the locking element is provided with several limiting blocks that are accommodated in the sliding groove.

[0032] The beneficial effects of this utility model are:

[0033] Unlike existing technologies, this application provides a drone lifting failure protection device, comprising: a fixed part for connecting the drone; a detachable part that slides vertically with the fixed part for connecting a lifting tool; a locking groove member rotatably mounted on the fixed part, and having a bearing groove and a sliding groove connected to the bearing groove; a locking fastener for supporting the detachable part; the locking fastener having teeth; wherein, when the teeth are located in the bearing groove, the locking fastener is suspended on the locking groove member; when the teeth enter the sliding groove, the locking fastener disengages from the locking groove member; and a driver that, in the event of a rigid-flexible switching failure, drives the locking groove member to rotate circumferentially relative to the locking fastener in a preset direction, so that the teeth of the locking fastener slide out from the bearing groove into the sliding groove, thereby separating the detachable part from the fixed part. In other words, the drone lifting failure protection device of this application can detach the lifting tool from the drone in the event of a rigid-flexible switching failure, thereby effectively ensuring the normal landing of the drone.

[0034] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0036] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of a preferred embodiment of the UAV hoisting of this utility model;

[0038] Figure 2 This is a perspective view of a preferred embodiment of the drone hoisting failure protection device of this utility model;

[0039] Figure 3 This is a schematic diagram of the unmanned aerial vehicle (UAV) hoisting failure protection device of a preferred embodiment of the present invention before separation;

[0040] Figure 4 This is a schematic diagram of the separation of the drone hoisting failure protection device according to a preferred embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of a preferred embodiment of the locking groove component of this utility model;

[0042] Figure 6 This is a schematic diagram of a locking component according to a preferred embodiment of the present invention;

[0043] Figure 7 This is a cross-sectional view of a preferred embodiment of the drone hoisting failure protection device of this utility model;

[0044] Figure 8 This is a partial sectional view from below of a preferred embodiment of the drone hoisting failure protection device of this utility model.

[0045] In the picture:

[0046] Fixed part 1, column 11, fixed plate 12, first through hole 121, top cover 13, separable part 2, guide sleeve 21, bearing plate 22, second through hole 221, locking groove 3, first locking block 31, retaining ring 32, first spring 33, lever 34, bearing groove 41, sliding groove 42, upper extension groove 43, locking buckle 5, toothed part 51, second locking block 52, sleeve 53, second spring 54, fixed sleeve 55, third through hole 551, sliding groove 552, limit block 56, driver 6;

[0047] 100 drones, 200 hoisting tools, and 300 drone hoisting failure protection devices. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0049] This application provides a drone hoisting failure protection device, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0050] See Figures 1 to 8 In one embodiment of this application, a drone hoisting failure protection device 300 is provided, comprising: a fixing part 1 for connecting a drone 100; a detachable part 2 for slidingly engaging with the fixing part 1 and connecting a hoisting tool 200; a locking groove 3 rotatably disposed on the fixing part 1, and having a bearing groove 41 and a sliding groove 42 connected to the bearing groove 41; a locking fastener 5 for supporting the detachable part 2; the locking fastener 5 having teeth 51; wherein, when the teeth 51 are located in the bearing groove 41, the locking fastener 5 is hoisted on the locking groove 3; when the teeth 51 enter the sliding groove 42, the locking fastener 5 disengages from the locking groove 3; and a driver 6 for driving the locking groove 3 to rotate circumferentially relative to the locking fastener 5 in a preset direction, so that the teeth 51 of the locking fastener 5 slide out after entering the sliding groove 42 from the bearing groove 41, thereby separating the detachable part 2 from the fixing part 1.

[0051] See Figure 1In one application scenario, the drone 100 is connected to the lifting device 200 via a drone lifting failure protection device 300. The lifting device 200 may include a rigid-flexibility switching device and a lifting rod. The lower end of the lifting rod may be equipped with grippers or other devices for connecting with the cargo. Optionally, the rigid-flexibility switching device may be existing technology, such as, but not limited to, the structure disclosed in patent CN119058954A, or a rigid-flexibility switching device previously filed by the applicant. When the rigid-flexibility switching device malfunctions, such as being unable to switch from a rigid state to a flexible state, or when other malfunctions occur, the drone lifting failure protection device 300 can separate the drone 100 from the lifting device 200, thereby effectively ensuring the landing of the drone 100.

[0052] Optional, see Figures 3 to 6 During normal hoisting operations, the tooth 51 is located in the bearing groove 41, and the locking groove 3 and the locking fastener 5 are under the same force. When it is necessary to separate the UAV 100 from the hoisting device 200, the driver 6 can drive the locking groove 3 to rotate circumferentially relative to the locking fastener 5 in a preset direction, so that the tooth 51 of the locking fastener 5 slides out from the bearing groove 41 into the sliding groove 42 due to gravity, thereby separating the separable part 2 from the fixed part 1.

[0053] Optionally, the bearing groove 41 may be horizontally positioned, and the sliding groove 42 may be inclined or vertically positioned. It is understood that when the sliding groove 42 is inclined, the inclination direction of the sliding groove 42 should satisfy the following condition: when the tooth 51 slides down along the sliding groove 42, it can drive the locking member 3 to continue rotating in the preset direction.

[0054] See Figure 3 or Figure 4 The lower end of the fixed part 1 is provided with a plurality of columns 11; the upper end of the separable part 2 is provided with a guide sleeve 21 for inserting the corresponding columns 11. The columns 11 and the guide sleeve 21 allow the separable part 2 to move vertically relative to the fixed part 1, but it cannot rotate circumferentially.

[0055] Further, see Figures 3 to 7 The fixing part 1 includes: a fixing plate 12, on which a first through hole 121 is provided; the locking groove 3 passes through the first through hole 121, and its upper and lower parts are respectively located on the upper and lower sides of the fixing plate 12; the upper end of the locking groove 3 is provided with a first locking block 31 whose outer diameter is larger than the inner diameter of the first through hole 121, and the lower end is provided with the bearing groove 41 and the sliding groove 42.

[0056] In this embodiment, the upper space of the fixing plate 12 can be used to install the driver 6, etc. The fixing plate 12 and the first locking block 31 enable the fixing plate 12 to withstand the downward pulling force of the locking groove 3.

[0057] Furthermore, a retaining ring 32 protrudes from the outer wall of the lower end of the locking groove 3; a first spring 33 is sleeved on the outer periphery of the lower part of the locking groove 3; the upper and lower ends of the first spring 33 abut against the fixing plate 12 and the retaining ring 32 respectively.

[0058] In this embodiment, the first spring 33 can ensure that the first locking block 31 is pressed against the upper surface of the fixing plate 12 to prevent it from shaking and ensure working stability.

[0059] In this embodiment, optionally, the circumferential rotation of the locking groove 3 can be achieved by various existing driving methods, such as using a lead screw motor, gear rack, or other methods that can be conceived by those skilled in the art. It is only necessary to process the locking groove 3 into a structure that can be connected to different driving methods.

[0060] Optionally, as an alternative method for driving the locking groove 3 to rotate, a lever 34 is provided at the upper end of the locking groove 3; the driver 6 is a push rod motor, used to push the lever 34 to drive the locking groove 3 to rotate circumferentially.

[0061] It should be noted that in some application scenarios, the driver 6 can execute actions after receiving control commands from the control module. This is existing technology and will not be elaborated here.

[0062] Optional, see Figure 2 The upper end of the fixing part 1 may be provided with a cover 13, which can cover and protect the driver 6.

[0063] Further, see Figures 3 to 7 Optionally, the separable part 2 includes: a support plate 22, on which a second through hole 221 is provided; the locking member 5 passes through the second through hole 221, and its upper and lower parts are located on the upper and lower sides of the support plate 22, respectively; the upper part of the locking member 5 is provided with the toothed part 51, and the lower part is provided with a second locking block 52 with an outer diameter larger than the inner diameter of the second through hole 221.

[0064] In this embodiment, the cooperation between the second locking block 52 and the bearing plate 22 allows the locking fastener 5 to bear the downward pulling force of the detachable part 2. During normal hoisting operations, the lift of the UAV 100 is transmitted sequentially to the hoisting tool 200 through the fixing part 1, the locking groove 3, the locking fastener 5, and the detachable part 2.

[0065] See Figure 6 Optionally, the upper end of the locking member 5 is provided with a sleeve 53 for fitting around the lower end of the locking groove member 3; the inner wall of the sleeve 53 is provided with the teeth 51.

[0066] Optionally, there can be multiple teeth 51, and the grooves on the outer periphery of the locking groove 3 can also be multiple sets, which can make the force distribution between the locking groove 3 and the locking buckle 5 more uniform.

[0067] Furthermore, a second spring 54 is provided on the outer periphery of the upper part of the locking member 5; the upper and lower ends of the second spring 54 abut against the sleeve 53 and the bearing plate 22 respectively.

[0068] In this embodiment, the second spring 54 can prevent the components from shaking.

[0069] Optionally, the locking groove 3 is further provided with an upper extension groove 43; the two ends of the bearing groove 41 are respectively connected to the upper extension groove 43 and the lower extension groove 42; the bearing groove 41 is inclined to be horizontal, and the upper extension groove 43 and the lower extension groove 42 are both inclined in the same direction.

[0070] In one application scenario, when the drone 100 is not lifting goods, or when the drone lifting failure protection device 300 is not installed on the drone 100 in the warehouse, the tooth 51 can enter the upper extension groove 43, so that the second spring 54 is not under full load and pressure, thereby improving the service life of the spring.

[0071] Further, see Figure 8 A fixing sleeve 55 is provided on the lower surface of the bearing plate 22; a third through hole 551 is provided in the fixing sleeve 55, and a plurality of sliding grooves 552 are provided in the third through hole 551; the lower end of the locking member 5 passes through the third through hole 551, and a plurality of limiting blocks 56 are provided on the outer wall of the locking member 5, which are accommodated in the sliding grooves 552.

[0072] In this embodiment, the lower end of the locking member 5 can move up and down within the third through hole 551, and due to the cooperation between the sliding groove 552 and the limiting block 56, the locking member 5 can be restricted from circumferential rotation.

[0073] In summary, the drone lifting failure protection device of this utility model adopts a motor unlocking mechanism design to ensure the safe landing of the drone in the event of a failure to transition from rigid to flexible configuration, thus preventing damage or crashes. The cooperative structure of the column and guide sleeve prevents rotation of the fixed part relative to the detachable part, avoiding circumferential rotation of the cargo and reducing the impact of swaying on the locking device, ensuring stability during lifting. The use of multiple teeth increases the load-bearing capacity of the locking mechanism, ensuring stability even under external impacts during lifting. The design of a locking groove combined with a longer lever arm reduces the power required by the motor, allowing for the selection of a smaller, lower-power motor, improving the system's economic efficiency and overall performance.

[0074] It should be noted that all the devices (parts whose specific structures are not specified) selected in this application are general standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0075] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0076] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification.

Claims

1. A drone hoist failure protection device, characterized by, include: A fixing part (1) is used to connect the drone (100); The separable part (2) slides up and down with the fixed part (1) for connecting the hoisting tool (200). The locking groove (3) is rotatably mounted on the fixed part (1), and is provided with a bearing groove (41) and a sliding groove (42) connected to the bearing groove (41). A locking member (5) is used to support the separable part (2); the locking member (5) is provided with teeth (51); wherein, when the teeth (51) are located in the bearing groove (41), the locking member (5) is suspended on the locking groove (3); when the teeth (51) enter the sliding groove (42), the locking member (5) disengages from the locking groove (3); as well as The driver (6) is used to drive the locking groove (3) to rotate circumferentially relative to the locking fastener (5) in a preset direction so that the teeth (51) of the locking fastener (5) slide out from the bearing groove (41) into the sliding groove (42), thereby separating the separable part (2) from the fixed part (1).

2. The unmanned aerial vehicle (UAV) hoisting failure protection device according to claim 1, characterized in that, The lower end of the fixing part (1) is provided with several columns (11). The upper end of the separable part (2) is provided with a guide sleeve (21) for the corresponding column (11) to be inserted.

3. The unmanned aerial vehicle (UAV) hoisting failure protection device according to claim 1, characterized in that, The fixing part (1) includes: a fixing plate (12), and the fixing plate (12) is provided with a first through hole (121); The locking groove (3) is inserted into the first through hole (121), and the upper and lower parts are located on the upper and lower sides of the fixing plate (12), respectively. The upper end of the locking groove (3) is provided with a first locking block (31) with an outer diameter larger than the inner diameter of the first through hole (121), and the lower end is provided with the bearing groove (41) and the sliding groove (42).

4. The unmanned aerial vehicle (UAV) hoisting failure protection device according to claim 3, characterized in that, A retaining ring (32) is provided on the outer wall of the lower end of the locking groove (3); The lower outer periphery of the locking groove (3) is fitted with a first spring (33); The upper and lower ends of the first spring (33) abut against the fixed plate (12) and the retaining ring (32), respectively.

5. The unmanned aerial vehicle (UAV) hoisting failure protection device according to claim 3, characterized in that, The upper end of the locking groove (3) is provided with a lever (34); The driver (6) is a push rod motor, used to push the lever (34) to drive the locking groove (3) to rotate circumferentially.

6. The unmanned aerial vehicle (UAV) hoisting failure protection device according to claim 1, characterized in that, The locking groove (3) is also provided with an upper extension groove (43); The two ends of the bearing groove (41) are respectively connected to the upper extension groove (43) and the lower slide groove (42); The bearing groove (41) is set horizontally, and the upper extension groove (43) and the lower slide groove (42) are both set inclined in the same direction.

7. The unmanned aerial vehicle (UAV) hoisting failure protection device according to claim 1, characterized in that, The separable part (2) includes: a support plate (22), on which a second through hole (221) is provided; The locking element (5) is inserted into the second through hole (221), and the upper and lower parts are located on the upper and lower sides of the bearing plate (22), respectively. The upper part of the locking element (5) is provided with the toothed part (51), and the lower part is provided with a second locking block (52) with an outer diameter larger than the inner diameter of the second through hole (221).

8. The unmanned aerial vehicle (UAV) hoisting failure protection device according to claim 7, characterized in that, The upper end of the locking member (5) is provided with a sleeve (53) for fitting around the outer periphery of the lower end of the locking groove member (3); The inner wall of the sleeve (53) is provided with the teeth (51).

9. The unmanned aerial vehicle (UAV) hoisting failure protection device according to claim 8, characterized in that, A second spring (54) is provided on the outer periphery of the upper part of the locking member (5); The upper and lower ends of the second spring (54) abut against the sleeve (53) and the bearing plate (22) respectively.

10. The unmanned aerial vehicle (UAV) hoisting failure protection device according to claim 7, characterized in that, A fixing sleeve (55) is provided on the lower surface of the bearing plate (22); The fixing sleeve (55) is provided with a third through hole (551), and the third through hole (551) is provided with a plurality of sliding grooves (552). The lower end of the locking member (5) passes through the third through hole (551), and the outer wall of the locking member (5) is provided with a number of limiting blocks (56) that are accommodated in the sliding groove (552).

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