A surveying and mapping unmanned aerial vehicle multi-spectral lens protection device

Abstract

This utility model discloses a multispectral lens protection device for a surveying drone, comprising a protective cylinder and a protective outer shell. The protective outer shell is installed at the end of the protective cylinder via a threaded connection. Two sets of clamping assemblies are symmetrically arranged inside the protective cylinder. Each clamping assembly includes a pull rod, an arc-shaped clamping plate, and a spring. One end of the pull rod movably passes through the protective cylinder. The arc-shaped clamping plate is located inside the protective cylinder, with its middle portion fixed to the other end of the pull rod. One end of the spring is fixed to the inner wall of the protective cylinder, and the other end is fixed to the outer side of the arc-shaped clamping plate. The lens body is clamped between the arc-shaped clamping plates. This utility model belongs to the field of multispectral lens protection technology for drones, specifically referring to a multispectral lens protection device for a surveying drone.

Description

Technical Field

[0001] This utility model belongs to the field of multispectral lens protection technology for UAVs, specifically referring to a multispectral lens protection device for surveying UAVs. Background Technology

[0002] In fields such as geographic surveying and environmental monitoring, multispectral lenses carried by surveying drones have become key equipment for acquiring geographic information due to their high-precision spectral data acquisition capabilities. However, the internal optical components of multispectral lenses are delicate and fragile. In complex operating environments (such as low-altitude flight in mountainous areas or navigating between urban buildings), they are easily damaged by tree branches, sand and dust impacts, or drone vibrations, resulting in damage to the optical surface or displacement of the internal structure, which in turn affects the accuracy of the spectral data and the imaging quality.

[0003] Traditional protective devices for multispectral lenses of surveying drones mostly use clamps of fixed size, which have poor adaptability and are difficult to be compatible with lenses of different diameters. When the lens needs to be replaced, the clamps need to be readjusted or replaced, which is cumbersome and time-consuming. Moreover, in traditional protective devices, the protective lens and the main body of the protective device are mostly integrated into one design. When the protective lens is damaged, the whole device needs to be replaced, resulting in high maintenance costs. Utility Model Content

[0004] To address the challenges of traditional multispectral lens protection devices being difficult to adapt to lenses of different diameters and requiring complete replacement of damaged protective lenses, resulting in high maintenance costs, this invention provides a multispectral lens protection device for surveying drones.

[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: A multispectral lens protection device for a surveying UAV includes a protective cylinder and a protective shell. The protective shell is installed at the end of the protective cylinder by a threaded connection. Two sets of clamping assemblies are symmetrically arranged inside the protective cylinder. The clamping assembly includes a pull rod, an arc-shaped clamping plate, and a spring. One end of the pull rod is movably inserted through the protective cylinder. The arc-shaped clamping plate is located inside the protective cylinder, with its middle part fixed to the other end of the pull rod. One end of the spring is fixed to the inner wall of the protective cylinder, and the other end is fixed to the outer side of the arc-shaped clamping plate. The lens body is clamped between the arc-shaped clamping plates.

[0006] As a preferred embodiment of this utility model, the protective cylinder has a circular groove corresponding to the pull rod, one end of the pull rod is movably disposed in the circular groove and connected to a pull block.

[0007] As a preferred embodiment of this utility model, a protective lens is movably installed inside the protective shell, and is made of optical-grade polycarbonate material.

[0008] As a preferred embodiment of this utility model, the outer side wall of the end of the protective cylinder is provided with an external thread, and the inner side wall of the protective shell is provided with an internal thread corresponding to the external thread.

[0009] As a preferred embodiment of this utility model, the inner contact surface of the arc-shaped clamp is provided with anti-slip texture, and the inner cross section of the arc-shaped clamp is trapezoidal.

[0010] As a preferred embodiment of this invention, a connecting block is connected to the end of the lens body away from the protective shell.

[0011] Compared with the prior art, the present invention achieves the following beneficial effects by adopting the above structure:

[0012] 1. The combination of the pull block, circular groove, and clamping components allows for convenient installation and removal of the multispectral lens body. When installing the lens, pulling the pull block moves the lever, causing the arc-shaped clamping plate to open. After placing the lens body in, releasing the pull block allows the arc-shaped clamping plate to automatically clamp the lens body under the action of the spring. When removing the lens, pulling the pull block again releases the arc-shaped clamping plate, making it easy to remove the lens. Compared with the fixed clamping method in the prior art, the operation is more convenient, and the adaptive clamping space can accommodate lens bodies of different diameters, improving the versatility of the protective device.

[0013] 2. By combining the protective cylinder, protective shell, and protective lens, the high maintenance cost of traditional integrated designs is effectively solved. The protective cylinder and protective shell are connected by threads for quick assembly and disassembly; the protective lens is independently and movable inside the protective shell and can be replaced individually without replacing the entire device, thus reducing maintenance costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a multispectral lens protection device for a surveying UAV proposed in this utility model;

[0015] Figure 2 This is an exploded view of a multispectral lens protection device for a surveying drone proposed in this utility model;

[0016] Figure 3 This is a partial structural schematic diagram of a multispectral lens protection device for a surveying UAV proposed in this utility model;

[0017] Figure 4 This is a cross-sectional view of a multispectral lens protection device for a surveying UAV proposed in this utility model;

[0018] Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle.

[0019] The components include: 1. Protective cylinder, 2. Protective outer shell, 3. Clamping assembly, 4. Pull rod, 5. Arc-shaped clamping plate, 6. Spring, 7. Lens body, 8. Circular groove, 9. Pulling block, 10. Protective lens, 11. External thread, 12. Internal thread, and 13. Connecting block. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" 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 application based on the specific circumstances. The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-5As shown, this utility model provides a multispectral lens protection device for a surveying UAV, including a protective cylinder 1 and a protective shell 2 installed at the end of the protective cylinder 1 via a threaded connection. The outer side wall of the end of the protective cylinder 1 is provided with an external thread 11, and the inner side wall of the protective shell 2 is provided with an internal thread 12 corresponding to the external thread 11, facilitating the installation and removal of the protective shell 2 on the protective cylinder 1. Two sets of clamping assemblies 3 are symmetrically arranged inside the protective cylinder 1. Each clamping assembly 3 includes a pull rod 4, an arc-shaped clamping plate 5, and a spring 6. One end of the pull rod 4 is movably inserted into the protective cylinder 1, the arc-shaped clamping plate 5 is located inside the protective cylinder 1, and its middle portion is fixed to the other end of the pull rod 4. One end of the spring 6 is fixed to the protective... The inner wall of the cylinder 1 is fixed at one end to the outer side of the arc-shaped clamp 5, and the lens body 7 is clamped between the arc-shaped clamp 5. The end of the lens body 7 away from the protective shell 2 is connected to a connecting block 13. The connecting block 13 is used to realize the mechanical and electrical connection between the lens body 7 and the surveying drone. The arc-shaped clamp 5 forms an adaptive clamping space under the action of the spring 6, which is used to fix the lens body 7 of different diameters. The protective cylinder 1 has a circular groove 8 corresponding to the pull rod 4. One end of the pull rod 4 is movably set in the circular groove 8 and connected to a pull block 9. The circular groove 8 provides guidance and movement space for the pull rod 4, ensuring that the pull rod 4 can move smoothly in a specific direction when subjected to force. The pull block 9 can facilitate personnel to pull the pull rod 4.

[0024] like Figure 1 and 2 As shown, a protective lens 10 is movably installed inside the protective housing 2. It is made of optical-grade polycarbonate material and has high light transmittance. The protective lens 10 can not only block external debris from directly hitting the lens, withstand and disperse the impact force, and protect the optical surface of the lens, but also ensure that light passes through smoothly without affecting the spectral data acquisition and imaging effect of the lens.

[0025] like Figure 3 and 4 As shown, the inner contact surface of the arc-shaped clamp 5 is provided with anti-slip texture. By increasing the roughness of the contact surface, the friction between the arc-shaped clamp 5 and the lens body 7 can be effectively improved, enhancing the clamping stability. The inner cross section of the arc-shaped clamp 5 is trapezoidal. When it contacts the cylindrical surface of the lens body 7, it can form multiple contact points and contact areas. Compared with planar contact, the clamping force can be distributed more evenly, avoiding excessive local pressure that could damage the surface of the lens body 7.

[0026] In practical use, first pull the pull block 9 to move the pull rod 4 within the circular groove 8, causing the arc-shaped clamp 5 to open against the elastic force of the spring 6, and placing the lens body 7 into the clamping space of the protective cylinder 1; after releasing the pull block 9, the spring 6 pushes the arc-shaped clamp 5 to reset, adaptively clamping the lens; then, install the protective lens 10 into the protective housing 2, and then tighten the protective housing 2 onto the end of the protective cylinder 1 through the threaded connection to complete the installation of the lens protection device; when disassembling, rotate the protective housing 2 in the opposite direction, and then pull the pull block 9 to loosen the arc-shaped clamp 5, so that the lens can be taken out.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A protective device for a multispectral lens of a surveying unmanned aerial vehicle (UAV), comprising a protective cylinder (1) and a protective shell (2), wherein the protective shell (2) is installed at the end of the protective cylinder (1) by a threaded connection, characterized in that: The protective cylinder (1) is symmetrically provided with two sets of clamping components (3). The clamping components (3) include a pull rod (4), an arc-shaped clamp (5) and a spring (6). One end of the pull rod (4) is movably inserted into the protective cylinder (1). The arc-shaped clamp (5) is located inside the protective cylinder (1), with its middle part fixed to the other end of the pull rod (4). One end of the spring (6) is fixed to the inner wall of the protective cylinder (1), and the other end is fixed to the outer side of the arc-shaped clamp (5). The lens body (7) is clamped between the arc-shaped clamps (5).

2. The multispectral lens protection device for a mapping UAV according to claim 1, characterized in that: The protective cylinder (1) has a circular groove (8) corresponding to the pull rod (4), and one end of the pull rod (4) is movably disposed in the circular groove (8) and connected to a pull block (9).

3. The multispectral lens protection device for a mapping UAV according to claim 1, characterized in that: The protective housing (2) contains a protective lens (10) made of optical grade polycarbonate.

4. The multispectral lens protection device for a mapping UAV according to claim 1, characterized in that: The outer side wall of the end of the protective cylinder (1) is provided with an external thread (11), and the inner side wall of the protective shell (2) is provided with an internal thread (12) corresponding to the external thread (11).

5. The multispectral lens protection device for a mapping UAV according to claim 1, characterized in that: The inner contact surface of the arc-shaped clamp (5) is provided with anti-slip texture, and the inner cross section of the arc-shaped clamp (5) is trapezoidal.

6. The multispectral lens protection device for a mapping UAV according to claim 1, characterized in that: The end of the lens body (7) away from the protective shell (2) is connected to a connecting block (13).

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