Protective structure of aerial survey camera of unmanned aerial vehicle

Abstract

The utility model belongs to the technical field of aerial photography, and particularly relates to a protection structure of an aerial survey camera of an unmanned aerial vehicle, which comprises a fixing ring and fixing frames, the fixing frames are annularly arranged on the fixing ring at equal intervals, the bottom of the fixing ring is fixedly connected with a glass protection cover, and the glass protection cover is of a semicircular structure. An outer swing arm is movably arranged on the surface of the outer wall of the glass protective cover, an outer rubber scraping strip is installed on the outer swing arm and abuts against the surface of the outer wall of the glass protective cover, an inner swing arm is movably arranged on the inner wall of the glass protective cover, and an inner rubber scraping strip is installed on the inner swing arm. The inner rubber scraping strip abuts against the surface of the inner wall of the glass protective cover, transmission shafts are inserted into the surface of the outer wall of the glass protective cover in a penetrating mode, and the transmission shafts are symmetrically arranged. The swing arms capable of swinging in a reciprocating mode are installed on the surfaces of the inner wall and the outer wall of the protective cover, dust on the surfaces of the outer wall and the inner wall of the protective cover can be cleaned, the cleanliness of the surfaces of the protective cover is guaranteed, and the aerial survey shooting requirement can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial photography, in particular to a protective structure of an unmanned aerial vehicle (UAV) aerial survey camera. Background Art

[0002] Aerial photogrammetry refers to the process of continuously capturing photographs of the ground from an aircraft using aerial photography equipment, and then creating a topographic map by combining ground control point measurement, mapping, and stereo mapping. The core of aerial photogrammetry is transforming the ground into an orthographic projection (topographic map). This problem can be addressed in many ways, including graphical methods, optomechanical methods (also known as simulation methods), and analytical methods. Each of these methods can be further subdivided into many specific approaches, each with its own unique theories. Some of these concepts and theories are fundamental and share commonalities, such as the internal and external orientation elements of a photograph, the coordinate relationship between image points and ground points, collinearity condition equations, relative orientation of image pairs, absolute orientation of models, and the principle of stereoscopic observation.

[0003] The utility model patent currently announced with the number CN204674841U discloses an aerial photography device with the advantages of light weight and good shock absorption effect. It aims to solve the problem in the existing technology that, due to the certain weight of the aerial photography gimbal, higher-strength materials are often selected to connect the aerial photography gimbal in order to support it, but this results in a larger weight; and in order to reduce the weight, thin materials are used, but the shock absorption effect is poor.

[0004] Existing aerial photography equipment is hung on the belly of a drone and protected by a glass cover. When the drone is flying at high speed, dust in the air will adhere to the surface of the glass cover, causing the glass cover to become blurred, which will affect the clarity of the aerial photography camera. To solve the above problem, this application proposes a protective structure for a drone aerial photography camera. Utility Model Content

[0005] (1) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a protective structure for an unmanned aerial survey camera. By installing a reciprocating swing arm on the inner and outer wall surfaces of the protective cover, the dust on the outer and inner wall surfaces of the protective cover can be cleaned to ensure the cleanliness of the protective cover surface, which can meet the needs of aerial survey shooting and solve the problems raised in the background technology.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a protective structure for an unmanned aerial survey camera, comprising a fixing ring and a fixing frame, wherein the fixing frame has equidistant rings arranged on the fixing ring, a glass protective cover is fixedly connected to the bottom of the fixing ring, and the glass protective cover has a semicircular structure. An outer swing arm is movably provided on the outer wall surface of the glass protective cover, and an outer rubber scraper is installed on the outer swing arm, and the outer rubber scraper abuts against the outer wall surface of the glass protective cover;

[0009] An inner swing arm is movably provided on the inner wall of the glass protective cover, and an inner rubber scraper is installed on the inner swing arm, and the inner rubber scraper abuts against the inner wall surface of the glass protective cover;

[0010] The outer wall surface of the glass protective cover is penetrated by a plug-in transmission shaft, the transmission shaft is symmetrically arranged, and the transmission shaft is respectively connected to the two ends of the outer swing arm and the inner swing arm.

[0011] Preferably, one group of the transmission shaft ends is fixedly connected to a worm gear.

[0012] Preferably, a servo motor is provided below the worm gear, a power output end of the servo motor is transmission-connected to a worm, and the worm is transmission-connected to the worm gear.

[0013] Preferably, a fixing seat is installed on the upper surface of the servo motor, the cross section of the fixing seat is a right-angle structure, and the end of the fixing seat is welded to the outer wall of the fixing ring.

[0014] Preferably, heat dissipation windows are provided on the top of the outer wall of the glass protective cover, and the heat dissipation windows are distributed at equal distances.

[0015] Preferably, the inner cavity of the heat dissipation window is provided with a dustproof net, and the surface of the fixing ring is provided with a rubber buffer pad.

[0016] Preferably, an impact-resistant base is welded on the surface of the outer swing arm, and the impact-resistant base is located in the middle of the outer swing arm.

[0017] The above technical solution of the utility model has the following beneficial technical effects:

[0018] 1. The utility model can protect the aerial survey camera through the glass protective cover. The outer and inner walls of the glass protective cover can be cleaned simultaneously by the outer and inner rubber scrapers to ensure normal aerial survey shooting. The worm gear and worm are matched with self-locking properties. After cleaning, the outer and inner swing arms can be rotated to the fixed ring to avoid affecting the aerial survey shooting.

[0019] 2. In the present invention, when it is anticipated that the UAV needs to make an emergency landing during flight, the outer and inner swing arms can be rotated to the middle of the glass protective cover to provide support. At the same time, the impact-resistant base is in contact with the ground, which can enhance the impact resistance of the protective structure and ensure the safety of the aerial survey camera and the captured data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a protective structure for a drone aerial survey camera according to the present invention;

[0021] Figure 2 This is a schematic cross-sectional view of a protective structure of a drone aerial survey camera according to the present invention;

[0022] Figure 3 This is a schematic diagram of the swing arm structure of a protective structure of a UAV aerial survey camera of the utility model;

[0023] Figure 4 The utility model is a schematic diagram of the swing arm drive structure of the protective structure of the UAV aerial survey camera.

[0024] Reference numerals:

[0025] 1. Fixing ring; 2. Fixing frame; 3. Rubber cushion; 4. Glass protection cover; 5. Outer swing arm; 6. Outer rubber scraper; 7. Inner swing arm; 8. Inner rubber scraper; 9. Drive shaft; 10. Worm gear; 11. Servo motor; 12. Worm; 13. Fixing seat; 14. Heat dissipation window; 15. Dust screen; 16. Impact-resistant base. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0027] like Figure 1-4 As shown, the present invention proposes a protective structure for a drone aerial survey camera, comprising a fixing ring 1 and a fixing frame 2. The fixing frame 2 is equidistantly arranged on the fixing ring 1. A glass protective cover 4 is fixedly connected to the bottom of the fixing ring 1. The glass protective cover 4 is a semicircular structure. An outer swing arm 5 is movably provided on the outer wall surface of the glass protective cover 4. An outer rubber scraper 6 is installed on the outer swing arm 5. The outer rubber scraper 6 abuts against the outer wall surface of the glass protective cover 4.

[0028] An inner swing arm 7 is movably provided on the inner wall of the glass protective cover 4, and an inner rubber scraper 8 is installed on the inner swing arm 7. The inner rubber scraper 8 abuts against the inner wall surface of the glass protective cover 4;

[0029] The outer wall surface of the glass protective cover 4 is penetrated by a drive shaft 9, which is symmetrically arranged and connected to both ends of the outer swing arm 5 and the inner swing arm 7 respectively.

[0030] It should be noted that the fixing ring 1 is fixed to the bottom of the drone's belly through the fixing frame 2 and the fixing bolts, and the aerial survey camera is covered in the glass protective cover 4. The glass protective cover 4 can protect the aerial survey camera. During the flight of the drone, a small amount of dust will still enter the glass protective cover 4, and the dust in the air will adhere to the surface of the glass protective cover 4 in large quantities, which will affect the shooting of the aerial survey camera. The outer wall and inner wall of the glass protective cover 4 are cleaned at the same time by the outer rubber scraper 6 and the inner rubber scraper 8 to ensure normal aerial survey shooting. The worm gear 10 and the worm 12 are self-locking. After cleaning, the outer swing arm 5 and the inner swing arm 7 can be rotated to the fixing ring 1 to avoid affecting the aerial survey shooting.

[0031] In this embodiment, if Figure 4 As shown, one group of the transmission shafts 9 is fixedly connected to a worm gear 10 at the end thereof, a servo motor 11 is provided below the worm gear 10, a power output end of the servo motor 11 is transmission-connected to a worm 12, the worm 12 is transmission-connected to the worm gear 10, a fixing seat 13 is installed on the upper surface of the servo motor 11, the cross section of the fixing seat 13 is a right-angle structure, and the end of the fixing seat 13 is welded to the outer wall of the fixing ring 1.

[0032] It should be noted that the servo motor 11 drives the worm 12, the worm 12 drives the worm wheel 10 to rotate, and the worm wheel 10 can simultaneously drive the outer swing arm 5 and the inner swing arm 7 through the transmission shaft 9 to perform reciprocating swing with the transmission shaft 9 as the axis.

[0033] In this embodiment, if Figure 2 As shown, a heat dissipation window 14 is provided on the top of the outer wall of the glass protective cover 4 , and the heat dissipation windows 14 are evenly distributed. The inner cavity of the heat dissipation window 14 is provided with a dustproof net 15 , and a rubber buffer pad 3 is provided on the surface of the fixing ring 1 .

[0034] It should be noted that during flight, air passes through the heat dissipation window 14 and enters the glass protective cover 4 to ensure normal heat dissipation of the aerial survey camera, and the dustproof net 15 can block dust in the air.

[0035] In this embodiment, if Figure 2 As shown, an impact-resistant base 16 is welded on the surface of the outer swing arm 5 , and the impact-resistant base 16 is located in the middle of the outer swing arm 5 .

[0036] It should be noted that if it is anticipated that the UAV needs to make an emergency landing during flight, the outer swing arm 5 and the inner swing arm 7 can be rotated to the middle of the glass protective cover 4 to provide support. At the same time, the impact-resistant base 16 can be used in contact with the ground to enhance the impact resistance of the protective structure, thereby ensuring the safety of the aerial survey camera and the captured data.

[0037] The working principle and use process of the utility model are as follows: the fixing ring 1 is fixed to the lower part of the drone's belly through the fixing frame 2 and the fixing bolts, and the aerial survey camera is covered in the glass protective cover 4. The glass protective cover 4 can protect the aerial survey camera. During the flight, air passes through the heat dissipation window 14 and enters the glass protective cover 4 to ensure the normal heat dissipation of the aerial survey camera. The dustproof net 15 can block the dust in the air to reduce the dust from entering the glass protective cover 4. During the flight of the drone, a small amount of dust will still enter the glass protective cover 4, and the dust in the air will adhere to the surface of the glass protective cover 4 in large quantities, which will affect the shooting of the aerial survey camera. The servo motor 11 drives the worm 12, and the worm 12 drives the worm gear 1 0 rotates, the worm gear 10 can simultaneously drive the outer swing arm 5 and the inner swing arm 7 through the transmission shaft 9 to swing back and forth with the transmission shaft 9 as the axis, so that the outer wall and the inner wall of the glass protective cover 4 can be cleaned at the same time by the outer rubber scraper 6 and the inner rubber scraper 8 to ensure normal aerial survey shooting. The worm gear 10 and the worm 12 are matched with self-locking. After cleaning, the outer swing arm 5 and the inner swing arm 7 can be rotated to the fixed ring 1 to avoid affecting the aerial survey shooting. If it is anticipated that the drone needs to make an emergency landing during flight, the outer swing arm 5 and the inner swing arm 7 can be rotated to the middle of the glass protective cover 4 to play a supporting role. At the same time, through the impact-resistant base 16 in contact with the ground, the impact resistance of the protective structure can be improved to ensure the safety of the aerial survey camera and the shooting data.

[0038] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims or their equivalents.

Claims

1. A protective structure for an unmanned aerial survey camera, comprising a fixing ring (1) and a fixing frame (2), wherein the fixing frame (2) is equidistantly arranged on the fixing ring (1), and is characterized in that: The bottom of the fixing ring (1) is fixedly connected to a glass protective cover (4), the glass protective cover (4) is in a semicircular structure, an outer swing arm (5) is movably provided on the outer wall surface of the glass protective cover (4), an outer rubber scraper (6) is installed on the outer swing arm (5), and the outer rubber scraper (6) abuts against the outer wall surface of the glass protective cover (4); An inner swing arm (7) is movably provided on the inner wall of the glass protective cover (4), an inner rubber scraper (8) is mounted on the inner swing arm (7), and the inner rubber scraper (8) abuts against the inner wall surface of the glass protective cover (4); A drive shaft (9) is inserted through the outer wall surface of the glass protective cover (4). The drive shaft (9) is symmetrically arranged and is connected to both ends of the outer swing arm (5) and the inner swing arm (7).

2. The protective structure of a drone aerial survey camera according to claim 1, characterized in that: One of the transmission shafts (9) has a worm gear (10) fixedly connected to its end.

3. The protective structure of a drone aerial survey camera according to claim 2, characterized in that: A servo motor (11) is provided below the worm wheel (10), a power output end of the servo motor (11) is transmission-connected to a worm (12), and the worm (12) is transmission-connected to the worm wheel (10).

4. The protective structure of a drone aerial survey camera according to claim 3, characterized in that: A fixing seat (13) is installed on the upper surface of the servo motor (11), the cross section of the fixing seat (13) is a right-angle structure, and the end of the fixing seat (13) is welded to the outer wall of the fixing ring (1).

5. The protective structure of a drone aerial survey camera according to claim 4, characterized in that: The top of the outer wall of the glass protective cover (4) is provided with heat dissipation windows (14), and the heat dissipation windows (14) are distributed at equal distances.

6. The protective structure of a drone aerial survey camera according to claim 5, characterized in that: The inner cavity of the heat dissipation window (14) is provided with a dustproof net (15), and the surface of the fixing ring (1) is provided with a rubber buffer pad (3).

7. The protective structure of a drone aerial survey camera according to claim 6, characterized in that: An impact-resistant base (16) is welded on the surface of the outer swing arm (5), and the impact-resistant base (16) is located in the middle of the outer swing arm (5).

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