Unmanned aerial vehicle anti-collision propeller protection for modular hoisting safety inspection

Abstract

The utility model relates to unmanned plane technical field discloses a kind of unmanned plane anti-collision propeller protection for modular hoisting safety inspection, including unmanned plane, the unmanned plane outer wall is fixedly connected with paddle arm, the paddle arm outer wall is provided with protection component, the paddle arm outer wall is provided with replacement component, the replacement component is located at the bottom of protection component.The utility model is protected to the paddle blade of unmanned plane by annular cover using the annular net of openwork, while annular cover uses lightweight material, and unmanned plane will not be caused by weight burden, annular cover uses full-enclosing round angle, reduces air flow cutting phenomenon, simultaneously by streamline profile guiding airflow direction, directly block side wind, turbulence impact on propeller, the fixed through rod in annular cover inner wall is fixed with connecting piece, to provide support frame to annular cover whole, the protection ring fixed on the outer wall of through rod protects upper layer of paddle blade, avoid the dynamic balance damage or motor overload caused by foreign matter winding paddle blade, substantially reduce flight out-of-control risk.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a collision-resistant propeller protection system for UAVs designed for modular hoisting safety inspection. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are aerial work equipment that do not require direct human piloting and rely on remote control or autonomous flight programs to perform tasks. On construction sites, UAVs are typically used for tasks such as recording construction progress, safety inspections of tower cranes and high-formwork structures, monitoring foundation pits and main structures, material stacking statistics, 3D modeling, and modular hoisting inspections. Their core components consist of a power system and a flight control system, enabling them to fly flexibly in complex and changing construction site environments. Industrial-grade UAVs possess strong adaptability, capable of performing low-altitude flight missions in construction areas with dense steel structures, heavy dust, and limited space, while also offering advantages such as portability, rapid deployment, and high maneuverability.

[0003] Existing drone propeller protection technologies typically employ a semi-enclosed design. However, due to the presence of numerous steel bars, scaffolding, hoisting components, shade nets, and cables, the flight safety risks are significantly higher than in ordinary open environments. While most existing drones use semi-enclosed propeller protection structures, their protective capabilities remain clearly insufficient in complex environments like construction sites. The high-speed rotation of the propeller generates strong negative pressure airflow, easily attracting lightweight, flexible debris such as shade net fragments, warning tape, plastic film, packaging bags, and foam debris. When these objects are drawn to the openings of the semi-enclosed protective structure, the large gaps prevent the existing structure from effectively preventing them from entering the propeller area. Once these objects enter the protected area and become entangled in the rotating propeller, they not only disrupt the propeller's dynamic balance, causing sudden changes in flight attitude and leading to drone loss of control, but can also damage or break the propeller blades. In severe cases, this can even cause the drone to crash, posing significant risks to construction workers, equipment, property, and on-site safety. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a collision-resistant propeller protection system for drones designed for modular hoisting safety inspections.

[0005] This utility model is achieved by the following technical solution: a drone anti-collision propeller protection device for modular hoisting safety inspection, including a drone, a propeller arm fixedly connected to the outer wall of the drone, a protective component provided on the outer wall of the propeller arm, a replacement component provided on the outer wall of the propeller arm, and the replacement component located at the bottom of the protective component; The protective assembly includes an annular cover, a through rod fixedly connected to the inner wall of the annular cover, a connecting piece fixedly connected to the end of the through rod away from the annular cover, and a protective ring fixedly connected to the outer wall of the through rod.

[0006] Through the above technical solution, the ring cover uses a hollow ring mesh to protect the drone's propeller blades. The ring cover adopts a fully enclosed rounded corner to reduce airflow cutting phenomenon. At the same time, the streamlined contour guides the airflow direction and directly blocks the impact of crosswinds and turbulence on the propeller. The protective ring fixed through the outer wall of the rod protects the upper layer of the propeller blades, avoiding dynamic balance damage or motor overload caused by foreign objects getting entangled in the propeller blades, and greatly reducing the risk of flight loss of control.

[0007] As a further improvement to the above solution, the replacement component includes a connecting plate, which is fixedly connected to the bottom of the annular cover, and an upper arc-shaped semi-ring is fixedly connected to the end of the connecting plate away from the annular cover.

[0008] As a further improvement to the above solution, the upper arc-shaped semi-ring is disposed on the outer wall of the propeller arm, and a guide groove is provided inside the upper arc-shaped semi-ring. As a further improvement to the above solution, a guide rod is slidably connected to the outer wall of the guide groove, and a lower arc-shaped semi-ring is fixedly connected to the bottom of the guide rod.

[0009] As a further improvement to the above solution, the lower arc-shaped semi-ring is internally threaded with a screw, and the screw is threadedly connected inside the upper arc-shaped semi-ring.

[0010] As a further improvement to the above solution, a first connecting plate is fixedly connected to the outer wall of the lower arc-shaped semi-ring, and a flexible hard plastic plate is fixedly connected to the bottom of the first connecting plate.

[0011] As a further improvement to the above solution, the end of the flexible rigid plastic plate away from the first connecting plate is fixedly connected to the bottom of the annular cover.

[0012] The above technical solution allows for the removal of the screw by tools, enabling it to unscrew from the upper and lower arc-shaped semi-rings, thus releasing their fixed constraints. The flexible hard plastic plate is then fixed to the annular cover. Because the flexible hard plastic plate is made of flexible material, the protective components can be quickly disassembled, facilitating the replacement of individually damaged protective components. This significantly reduces unnecessary component procurement costs and resource consumption, thereby lowering maintenance costs.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses a perforated ring-shaped mesh to protect the drone's propeller blades with a ring-shaped cover. The ring-shaped cover is made of lightweight material and will not add weight to the drone. The ring-shaped cover has a fully enclosed rounded corner to reduce airflow cutting. At the same time, the streamlined contour guides the airflow direction and directly blocks the impact of crosswinds and turbulence on the propeller. The through rod and connecting piece fixed to the inner wall of the ring-shaped cover provide a support frame for the entire ring-shaped cover. The protective ring fixed to the outer wall of the through rod protects the upper layer of the propeller blades, preventing foreign objects from getting entangled in the propeller blades and causing dynamic balance damage or motor overload, thus greatly reducing the risk of flight loss of control.

[0014] This invention utilizes tools to disassemble the screw, allowing it to unscrew from the upper and lower arc-shaped semi-rings, thus releasing their fixed constraints. At this point, the lower arc-shaped semi-ring can slide and separate along the guide groove of the upper arc-shaped semi-ring via a guide rod. The lower arc-shaped semi-ring then drives the flexible hard plastic plate to unfold synchronously via the first connecting plate. The flexible hard plastic plate is fixed to the annular cover. Because the flexible hard plastic plate is made of flexible material, it can be bent at a certain angle, thereby detaching it from the blade and enabling rapid disassembly of the protective components. This facilitates the replacement of individually damaged protective components, significantly reducing unnecessary component procurement costs and resource consumption, and lowering maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the protective component structure of this utility model; Figure 3 This is a schematic diagram of the replacement component structure of this utility model; Figure 4 This is a cross-sectional structural diagram of the replacement component of this utility model; Figure 5 This utility model Figure 4 Enlarged structural diagram of section A in the middle.

[0016] Explanation of key symbols: 1. Unmanned Aerial Vehicle (UAV); 2. Propeller Arm; 3. Protective Components; 301. Annular Cover; 302. Penetrating Rod; 303. Connecting Plate; 304. Protective Ring; 4. Replacement Components; 401. Connecting Plate; 402. Upper Arc-Shaped Semi-Ring; 403. Guide Groove; 404. Guide Rod; 405. Lower Arc-Shaped Semi-Ring; 406. Screw; 407. First Connecting Plate; 408. Flexible Hard Plastic Sheet. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0018] Example: Please combine Figure 1-5 This embodiment provides a drone anti-collision propeller protection device for modular hoisting safety inspection, including a drone 1, a propeller arm 2 fixedly connected to the outer wall of the drone 1, a protective component 3 provided on the outer wall of the propeller arm 2, and a replacement component 4 provided on the outer wall of the propeller arm 2, with the replacement component 4 located at the bottom of the protective component 3. The protective component 3 includes an annular cover 301, a through rod 302 fixedly connected to the inner wall of the annular cover 301, a connecting piece 303 fixedly connected to the end of the through rod 302 away from the annular cover 301, and a protective ring 304 fixedly connected to the outer wall of the through rod 302.

[0019] The annular cover 301 uses a hollowed-out annular mesh to protect the propeller blades of the UAV 1. At the same time, the annular cover 301 is made of lightweight material and will not put a weight burden on the UAV 1. The annular cover 301 adopts a fully enclosed rounded corner to reduce the airflow cutting phenomenon. At the same time, the streamlined contour guides the airflow direction and directly blocks the impact of crosswinds and turbulence on the propeller. The through rod 302 fixed to the inner wall of the annular cover 301 is fixed to the connecting piece 303, thus providing a support frame for the entire annular cover 301. The protective ring 304 fixed to the outer wall of the through rod 302 protects the upper layer of the propeller blades, avoiding the dynamic balance damage or motor overload caused by foreign objects getting entangled in the propeller blades, and greatly reducing the risk of flight loss of control.

[0020] Replacement component 4 includes a connecting plate 401, which is fixedly connected to the bottom of the annular cover 301. An upper arc-shaped semi-ring 402 is fixedly connected to the end of the connecting plate 401 away from the annular cover 301.

[0021] The upper arc-shaped semi-ring 402 is positioned on the outer wall of the propeller arm 2, and a guide groove 403 is provided inside the upper arc-shaped semi-ring 402. A guide rod 404 is slidably connected to the outer wall of the guide groove 403, and a lower arc-shaped semi-ring 405 is fixedly connected to the bottom of the guide rod 404.

[0022] The lower arc-shaped semi-ring 405 has a screw 406 internally threaded, and the screw 406 is threaded inside the upper arc-shaped semi-ring 402.

[0023] A first connecting plate 407 is fixedly connected to the outer wall of the lower arc-shaped semi-ring 405, and a flexible hard plastic plate 408 is fixedly connected to the bottom of the first connecting plate 407.

[0024] The end of the flexible rigid plastic plate 408 away from the first connecting plate 407 is fixedly connected to the bottom of the annular cover 301.

[0025] By using tools to disassemble the screw 406, the screw 406 is unscrewed from inside the upper arc-shaped semi-ring 402 and the lower arc-shaped semi-ring 405, releasing their fixed constraints. At this time, the lower arc-shaped semi-ring 405 can slide and separate along the guide groove 403 of the upper arc-shaped semi-ring 402 via the guide rod 404. The lower arc-shaped semi-ring 405 drives the flexible hard plastic plate 408 to unfold synchronously through the first connecting plate 407. The flexible hard plastic plate 408 is fixed to the annular cover 301, realizing the rapid disassembly of the protective component 3. This facilitates the replacement of individually damaged protective components 3 by personnel, greatly reducing unnecessary component procurement costs and resource consumption, and lowering maintenance costs.

[0026] The implementation principle of the anti-collision propeller protection for UAVs in modular hoisting safety inspection in this application embodiment is as follows: By replacing component 4, the protective component 3 is fixed to the outer wall of the propeller arm 2, thereby protecting the UAV 1. The annular cover 301 uses a hollow annular mesh to protect the propeller blades of the UAV 1. At the same time, the annular cover 301 is made of lightweight material and will not cause a weight burden on the UAV 1. The annular cover 301 adopts a fully enclosed rounded corner to reduce airflow cutting phenomenon, and at the same time, the streamlined contour guides the airflow direction, directly blocking crosswinds and turbulent winds. The impact of the airflow on the propeller is mitigated by the through rod 302 fixed to the inner wall of the annular cover 301 and the connecting piece 303, which provides a support frame for the entire annular cover 301. The protective ring 304 fixed to the outer wall of the through rod 302 protects the upper layer of the propeller blades, preventing dynamic imbalance or motor overload caused by foreign objects entangled in the blades, thus significantly reducing the risk of flight loss of control. When it is necessary to disassemble or replace the protective component 3, the screw 406 is removed using a tool, allowing the screw 406 to unscrew from inside the upper arc-shaped semi-ring 402 and the lower arc-shaped semi-ring 405, releasing the fixing constraint between them. Currently, the arc-shaped semi-ring 405 can slide and separate along the guide groove 403 of the upper arc-shaped semi-ring 402 via the guide rod 404. The lower arc-shaped semi-ring 405 drives the flexible hard plastic plate 408 to unfold simultaneously via the first connecting plate 407. The flexible hard plastic plate 408 is fixed to the annular cover 301. Since the flexible hard plastic plate 408 is made of flexible material, it can be bent at a certain angle, thereby detaching from the blade and realizing the quick disassembly of the protective component 3. This facilitates the replacement of individually damaged protective components 3 by personnel, greatly reducing unnecessary parts procurement. To reduce purchase costs and resource consumption, and to lower maintenance costs, the flexible rigid plastic plate 408 provides a certain support force to the annular cover 301 when it is installed, ensuring the stability of the annular cover 301. During installation, the operation is reversed. The personnel align the connecting piece 303 with the blade motor so that the two are in a perpendicular state, thereby determining the position of the annular cover 301. At the same time, the blade is manually moved appropriately to prevent the blade from scratching the annular cover 301. The personnel use the screw 406 to lock the upper arc-shaped semi-ring 402 and the lower arc-shaped semi-ring 405 so that they fit tightly against the outer wall of the blade arm 2.

[0027] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A collision-resistant propeller protection system for UAVs used in modular hoisting safety inspections, characterized in that: The drone (1) is fixedly connected to the outer wall of the drone (1), the outer wall of the rotor arm (2) is provided with a protective component (3), the outer wall of the rotor arm (2) is provided with a replacement component (4), and the replacement component (4) is located at the bottom of the protective component (3). The protective component (3) includes an annular cover (301), a through rod (302) is fixedly connected to the inner wall of the annular cover (301), a connecting piece (303) is fixedly connected to one end of the through rod (302) away from the annular cover (301), and a protective ring (304) is fixedly connected to the outer wall of the through rod (302).

2. The anti-collision propeller protection for drones as described in claim 1, characterized in that: The replacement component (4) includes a connecting plate (401), which is fixedly connected to the bottom of the annular cover (301), and an upper arc-shaped semi-ring (402) is fixedly connected to one end of the connecting plate (401) away from the annular cover (301).

3. The anti-collision propeller protection for UAVs as described in claim 2, characterized in that: The upper arc-shaped semi-ring (402) is disposed in contact with the outer wall of the propeller arm (2), and a guide groove (403) is provided inside the upper arc-shaped semi-ring (402).

4. The anti-collision propeller protection for UAVs as described in claim 3, characterized in that: The outer wall of the guide groove (403) is slidably connected to a guide rod (404), and the bottom of the guide rod (404) is fixedly connected to a lower arc-shaped semi-ring (405).

5. The anti-collision propeller protection for UAVs as described in claim 4, characterized in that: The lower arc-shaped semi-ring (405) is internally threaded with a screw (406), and the screw (406) is threaded inside the upper arc-shaped semi-ring (402).

6. The anti-collision propeller protection for unmanned aerial vehicles as described in claim 5, characterized in that: The lower arc-shaped semi-ring (405) is fixedly connected to the outer wall of a first connecting plate (407), and a flexible hard plastic plate (408) is fixedly connected to the bottom of the first connecting plate (407).

7. The anti-collision propeller protection for unmanned aerial vehicles as described in claim 6, characterized in that: The flexible rigid plastic plate (408) is fixedly connected to the bottom of the annular cover (301) at one end away from the first connecting plate (407).

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