A fall protection device for high-altitude power transmission operations based on UAV positioning

Abstract

This utility model provides a fall protection device for high-altitude power transmission operations based on UAV positioning, belonging to the technical field of protection devices. It includes a main housing, an upper cover, and a buffer umbrella. The upper cover is spliced ​​to the top of the main housing, and its bottom and the top of the buffer umbrella are fixedly connected. Side connecting blocks are fixedly connected to both sides of the upper cover. A central air guide plate and side air guide plates are rotatably connected to the top of the upper cover, with the side air guide plates located on either side of the central air guide plate. Side positioning claws are cable-connected to the sides of both the central and side air guide plates. The deployment of the buffer umbrella cushions the falling UAV, reducing collision damage, decreasing the UAV's fall speed, and extending the output time of the UAV's positioning signal. This solves the problem of short dwell time during the entire fall, which often leads to the inability to obtain the final fall coordinates due to "sudden signal interruption."

Description

Technical Field

[0001] This utility model relates to the field of drone protection devices, and in particular to a fall protection device for high-altitude power transmission operations based on drone positioning. Background Technology

[0002] In high-altitude power transmission operations, drones are increasingly being used to inspect power lines. Drones reduce the number of times personnel need to work at heights and can also transport tools and other equipment to personnel, further reducing the weight of the equipment they need to carry.

[0003] Drones may crash during use due to various accidents. Drone crashes can easily damage core components, increase maintenance costs, and the entire crash process only lasts 1 to 1.5 seconds, which is not enough time for the RTK-GPS positioning data to be fully transmitted (especially when the signal is blocked during a vertical fall). Ground terminals often cannot obtain the final crash coordinates due to "sudden signal interruption". The crash point positioning deviation exceeds 1 meter, requiring manual investigation along the power transmission line. The investigation of the 0km line takes 2 hours, resulting in extremely low search efficiency. Summary of the Invention

[0004] This utility model provides a fall protection device for high-altitude power transmission operations based on UAV positioning. The deployment of the buffer parachute cushions the fall of the UAV, reducing collision damage, slowing the fall speed, extending the output time of the UAV positioning signal, and improving the positioning accuracy after the fall, facilitating the quick recovery of the UAV equipment by the operators. The central and side wind deflectors are deployed vertically to reduce the offset during the fall of the UAV, providing accurate coordinates for subsequent rescue or equipment recovery.

[0005] This utility model provides a fall protection device for high-altitude power transmission operations based on UAV positioning, specifically including: a main housing, an upper housing cover, and a buffer parachute. The upper housing cover is spliced ​​to the top of the main housing, and the bottom of the upper housing cover is fixedly connected to the top of the buffer parachute. A lower connecting frame is bolted to the bottom of the main housing. The main housing and the lower connecting frame clamp and fix the UAV in the middle. A central roller is rotatably connected to the inner side of the main housing, and an electric telescopic rod is fixedly connected to the inner side of the main housing. Side grooves are opened on both sides of the main housing. The electric telescopic rod is model TJC-C1, with a stroke of 50mm, a thrust of 50N, and a response time of ≤0.1s. The electric telescopic rod is electrically connected to the UAV's main control unit. After the gyroscope chip of the UAV's main control unit detects a loss of control and falls, the electric telescopic rod shortens. After the buffer parachute is deployed, it can quickly attenuate the UAV's falling kinetic energy through air resistance, extending the UAV's hovering time.

[0006] Furthermore, side connecting blocks are fixedly connected to both sides of the upper cover, and a middle air guide plate and a side air guide plate are rotatably connected to the top of the upper cover. The side air guide plates are located on both sides of the middle air guide plate, and side positioning claws are cable-connected to the sides of both the middle air guide plate and the side air guide plate.

[0007] Furthermore, coil springs are provided at the rotational connection points between the central air guide plate and the side air guide plate and the upper cover, respectively. The coil springs drive the central air guide plate and the side air guide plate to maintain a vertically unfolded state. The maximum rotational unfolding angle of the central air guide plate and the side air guide plate is ninety degrees, and the rotation angle of the central air guide plate and the side air guide plate is 0° or 90°.

[0008] Furthermore, the side guide plates are located on both sides of the central guide plate, and the central and side guide plates form a cross shape. The vertically opened central and side guide plates can form a "wind-resistant and stable surface".

[0009] Furthermore, the side connecting plug and the side groove are vertically slidably connected, and the telescopic rod of the electric telescopic rod is slidably connected to the side connecting plug. When the side connecting plug is inserted into the side groove, the electric telescopic rod extends and the telescopic rod of the electric telescopic rod is inserted into the positioning hole of the side connecting plug, thereby achieving rigid locking between the upper cover and the main body.

[0010] Furthermore, both sides of the lower part of the buffer umbrella are fixedly connected with lower connecting straps, the lower ends of the lower connecting straps are fixedly connected to the middle roller, the umbrella canopy of the buffer umbrella is made of nylon Oxford cloth, and the rotation of the middle roller will roll the lower connecting straps and the buffer umbrella into the main box.

[0011] Furthermore, the side positioning claw and the side connecting block engage with each other in the slot. When the side connecting block and the side groove slide into each other, the side positioning claw is located between the side connecting block and the side groove, thereby locking the middle air guide plate and the side air guide plate in a horizontal state.

[0012] This utility model provides a fall protection device for high-altitude power transmission operations based on UAV positioning, which has the following beneficial effects: The deployment of the buffer parachute cushions the fall of the drone, reducing collision damage, slowing its descent, extending the output time of its positioning signal, and further improving positioning accuracy. This facilitates rapid retrieval of the drone by personnel. The central and side wind deflectors deploy vertically, enhancing wind resistance and reducing the drone's deviation during the fall, providing precise coordinates for subsequent rescue or equipment recovery.

[0013] The rotation of the central spool winds up the lower connecting strap and the buffer umbrella inside the main housing, reducing the difficulty of folding the lower connecting strap and the buffer umbrella. The central air guide plate and the side air guide plate rotate to fit vertically against the top of the upper housing cover, reducing space occupation and minimizing the impact on the normal operation of the drone. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram: Figure 1 This diagram shows the structure of the main body and the upper cover of this application in a separated state; Figure 2 This diagram shows the structure of the main body and the upper cover of this application in their assembled and closed state; Figure 3 A schematic diagram of the buffer umbrella structure of this application is shown; Figure 4 A schematic diagram of the upper cover structure of this application is shown; Figure 5 A schematic diagram of the main casing of this application is shown; Figure 6 This invention presents a structural schematic diagram showing the main body, upper cover, and buffer umbrella in their separated states. Figure label: 1. Main housing; 101. Lower connecting frame; 102. Middle roller; 103. Electric telescopic rod; 104. Side groove; 2. Top cover; 201. Side connecting block; 202. Central air guide plate; 203. Side positioning claw; 204. Side air guide plate; 3. Buffer umbrella; 301. Lower connecting strap. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] Example 1: Please refer to Figures 1 to 6 : This utility model proposes a fall protection device for high-altitude power transmission operations based on UAV positioning, including a main housing 1, an upper housing cover 2, and a buffer umbrella 3. A lower connecting frame 101 is bolted to the bottom of the main housing 1. The main housing 1 and the lower connecting frame 101 clamp and fix the UAV in the middle. A central roller 102 is rotatably connected to the inner side of the main housing 1, and an electric telescopic rod 103 is fixedly connected to the inner side of the main housing 1. Side grooves 104 are provided on both sides of the main housing 1. The electric telescopic rod 103 is model TJC-C1, with a stroke of 50mm, a thrust of 50N, and a response time ≤0.1s. The electric telescopic rod 103 and the UAV main controller... Electrical connections are established. After the gyroscope chip of the UAV's main control detects a loss of control and crash, the electric telescopic rod 103 shortens. After the buffer parachute 3 deploys, it can quickly attenuate the UAV's falling kinetic energy through air resistance, extending the UAV's hovering time from 1.2 seconds without buffer to 3-4 seconds. This provides a more sufficient signal output window for the UAV's RTK-GPS positioning unit, extending the output time of the UAV's positioning signal and further improving the positioning accuracy after the crash. The top of the main housing 1 is spliced ​​with an upper housing cover 2. Side connecting blocks 201 are fixedly connected to both sides of the upper housing cover 2. The top of the upper housing cover 2 is rotatably connected to a central air guide plate 202 and... Side air guide plates 204 are located on both sides of the central air guide plate 202. Both the central air guide plate 202 and the side air guide plates 204 are connected by cables to side positioning claws 203. Springs are installed at the rotational connection points between the central air guide plate 202 and the upper cover 2 of both the side air guide plates 204 and the upper cover 2. These springs drive the central air guide plate 202 and the side air guide plates 204 to maintain a vertically extended state. The maximum rotational extension angle of the central air guide plate 202 and the side air guide plates 204 is 90 degrees. The rotational angle of the central air guide plate 202 and the side air guide plates 204 is 0° or 90°. The side connecting block 201 and the side groove 104 are vertically slidably connected. The electric telescopic rod 103... The telescopic rod and the side connecting plug 201 are slidably connected. When the side connecting plug 201 is inserted into the side groove 104, the electric telescopic rod 103 extends and the telescopic rod of the electric telescopic rod 103 is inserted into the positioning hole of the side connecting plug 201 to achieve rigid locking between the upper cover 2 and the main body 1. The bottom of the upper cover 2 and the top of the buffer umbrella 3 are fixedly connected. The lower connecting straps 301 are fixedly connected to both sides of the lower part of the buffer umbrella 3. The lower end of the lower connecting straps 301 is fixedly connected to the middle roller 102. The umbrella surface of the buffer umbrella 3 is made of nylon Oxford cloth. The rotation of the middle roller 102 will wind the lower connecting straps 301 and the buffer umbrella 3 into the main body 1 to improve storage efficiency.

[0019] In this embodiment, the side guide plates 204 are located on both sides of the central guide plate 202. The central guide plate 202 and the side guide plates 204 form a cross shape. The vertically opened central guide plate 202 and the side guide plates 204 can form a "wind-resistant stabilizing surface", which controls the offset of the UAV during the fall from 1.5m to within 0.3m. The stable attitude can avoid the drift of RTK-GPS positioning caused by the violent shaking of the fuselage.

[0020] In this embodiment, the side positioning claw 203 and the side connecting plug 201 engage with each other in the slot. When the side connecting plug 201 and the side groove 104 slide into each other, the side positioning claw 203 is positioned between the side connecting plug 201 and the side groove 104, thereby locking the middle air guide plate 202 and the side air guide plate 204 in a horizontal state, reducing space occupation and minimizing the impact on the normal operation of the UAV.

[0021] In this second embodiment, based on the first embodiment, a fall detection module is installed inside the main housing 1. The fall detection module integrates a three-axis accelerometer with a measurement range of ±2g and a sampling rate of 100Hz. The fall detection module is connected to the positioning drone 4 for power supply. When the fall detection module detects a free fall signal, it triggers the fall protection action, and the electric telescopic pole 103 shortens, thus deploying the buffer parachute 3.

[0022] The working principle of this embodiment: The buffer parachute 3 uses a nylon Oxford cloth canopy. After unfolding, it can quickly attenuate the kinetic energy of the drone's fall through air resistance. When the drone falls from a height of 30m with an initial speed of about 24.5m / s, the buffer parachute 3 can reduce the fall speed to 3-5m / s, with a kinetic energy attenuation rate of over 92%. The impact acceleration of the drone's fuselage is reduced from 200g to below 15g, which is lower than the drone's impact resistance threshold of 20g. The damage rate of core components such as the RTK-GPS unit and communication module is reduced from 85% in the traditional unprotected case to below 10%. The cost of repairing a single fall is reduced from 5000 yuan to 800 yuan, and the annual maintenance cost is reduced by 75%. The deceleration process of the buffer parachute 3 can extend the drone's hovering time from 1.2 seconds without buffering to 3-4 seconds, which is beneficial for the drone's RTK-GPS positioning unit. Provides a more ample signal output window, ensuring stable transmission of positioning data to the ground terminal even after a crash. The effective output duration of the positioning signal is increased by 150%. Compared to the situation where there is no buffer and the signal is interrupted momentarily, making it impossible to locate the crash point, this device can accurately lock the crash coordinates of the drone, facilitating rapid equipment recovery by operators and avoiding blind spots in operator safety monitoring caused by drone positioning interruption. The wind deflector plate provides wind resistance and stability, ensuring continuous positioning accuracy: When the middle wind deflector plate 202 and the side wind deflector plates 204 are deployed to a vertical state (cross-shaped layout), they can form a "wind-resistant and stable surface," controlling the offset of the drone during the crash from 1.5m to within 0.3m. The stable attitude can avoid the drift of RTK-GPS positioning caused by violent shaking of the aircraft, providing accurate coordinates for subsequent rescue or equipment recovery. The central roll 102 winds and stores the lower connecting strap 301 and the buffer umbrella 3 inside the main housing 1, eliminating the need for combing and folding and greatly improving storage efficiency. When storing, the central air guide plate 202 and the side air guide plate 204 can be rotated to be horizontally attached to the top of the upper housing cover 2. With the central roll 102 storing the lower connecting strap 301 and the buffer umbrella 3, the overall size of the device is greatly reduced after storage. After storage, the surface of the drone body can be kept flat, which does not affect the normal take-off and landing of the drone and ensures the stable performance of the drone in core operations such as power line inspection and positioning tracking.

[0023] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only involve structures relevant to the embodiments disclosed herein; other structures may refer to general designs.

[0024] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0025] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. An anti-falling protection device for power transmission aerial work based on positioning of a UAV, comprising: The main box (1), the upper box cover (2) and the buffer umbrella (3) are characterized in that the top of the main box (1) is spliced ​​with the upper box cover (2), the bottom of the upper box cover (2) and the top of the buffer umbrella (3) are fixedly connected, and the two sides of the upper box cover (2) are fixedly connected with side connecting blocks (201). The top of the upper box cover (2) is rotatably connected with the middle air guide plate (202) and the side air guide plate (204). The side air guide plate (204) is located on both sides of the middle air guide plate (202). The sides of the middle air guide plate (202) and the side air guide plate (204) are both connected with side positioning claws (203) by cables.

2. The anti-falling protection device for power transmission aerial work based on positioning of the unmanned aerial vehicle according to claim 1, characterized in that, The bottom of the main box (1) is bolted to a lower connecting frame (101), the inner side of the main box (1) is rotatably connected to a middle roller (102), the inner side of the main box (1) is fixedly connected to an electric telescopic rod (103), and side grooves (104) are provided on both sides of the main box (1).

3. The anti-falling protection device for power transmission aerial work based on positioning of the unmanned aerial vehicle according to claim 2, characterized in that, The middle air guide plate (202) and the side air guide plate (204) are respectively provided with coil springs at the rotation connection points with the upper cover (2), and the maximum rotation and unfolding angle of the middle air guide plate (202) and the side air guide plate (204) is ninety degrees.

4. The anti-falling protection device for power transmission aerial work based on positioning of the unmanned aerial vehicle according to claim 3, characterized in that, The side air guide plate (204) is located on both sides of the middle air guide plate (202), and the middle air guide plate (202) and the side air guide plate (204) form a cross shape.

5. The anti-falling protection device for power transmission aerial work based on positioning of the unmanned aerial vehicle according to claim 4, characterized in that, The side connecting plug (201) and the side groove (104) are vertically slidably connected, and the telescopic rod of the electric telescopic rod (103) is slidably connected to the side connecting plug (201).

6. The anti-falling protection device for power transmission aerial work based on positioning of the unmanned aerial vehicle according to claim 3, characterized in that, The lower sides of the buffer umbrella (3) are fixedly connected with lower connecting straps (301), and the lower end of the lower connecting straps (301) is fixedly connected to the middle roller (102).

7. The anti-falling protection device for power transmission aerial work based on positioning of the unmanned aerial vehicle according to claim 2, characterized in that, The side positioning claw (203) and the side connecting plug (201) engage with each other in the slot. When the side connecting plug (201) and the side groove (104) slide in, the side positioning claw (203) is located between the side connecting plug (201) and the side groove (104).

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