Vibration isolation system for aerial camera

Abstract

The invention provides a vibration isolation system for an aerial camera, which comprises a vibration isolation device and a switching base plate, the vibration isolation device is mounted between a seat frame and the switching base plate, comprises two switching platforms and four vibration isolators, and is used for reducing vibration on the aircraft to be transmitted to the camera, and the switching base plate is mounted between a structure mounting bottom plate and the vibration isolation device. The device is used for ensuring that the distance between a lens and photographing cabin glass is not less than 70mm after a camera is installed, and the composition is shown in figure 1. In order to meet camera use requirements, the height of the center of gravity of the camera is consistent with the supporting plane of the vibration isolators, and the center of gravity of the camera is located in the center of the four vibration isolators. According to the vibration suppression method of vibration isolation, rigid connection between the camera and the machine body is converted into elastic connection through the vibration isolation device, kinetic energy is converted into elastic potential energy, transmission of vibration of the machine body to the camera is blocked, the influence of vibration of the machine body on the camera is reduced, and the vibration suppression device is quite worthy of application and popularization.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration isolation of aerial cameras and relates to a vibration isolation system for aerial cameras. Background Art

[0002] An aerial camera is a camera installed on an airplane or other aircraft to take photos of the ground. With the development of aviation technology, line array and area array cameras have become the mainstream cameras for aerial cameras. However, aerial cameras are often installed inside an aircraft, and there is a lot of vibration in their installation environment. Line array and area array cameras are both optical precision surveying instruments. Working in a high-frequency vibration environment for a long time has a great impact on the camera's internal precision structure and working stability, making it prone to failure, reducing service life, and causing unstable measurement accuracy. Therefore, it is very necessary to provide additional vibration isolation measures for aerial cameras to improve their service life and measurement accuracy. Summary of the invention

[0003] The invention provides a vibration isolation system for an aerial camera, which reduces the vibration transmission from the body structure to the camera and provides a protection measure for the camera.

[0004] The present invention provides a vibration isolation system for an aerial camera, comprising: a vibration isolation device and a transfer pad; the vibration isolation device comprises: a first transfer platform, a second transfer platform and a plurality of vibration isolators;

[0005] The adapter plate is a hollow rectangle with a first thickness, and four top corners of both end faces are provided with mounting holes, and is mounted on the aircraft structure mounting bottom plate;

[0006] The lower end of the first transfer platform is a hollow rectangle with a second thickness, and the upper end is an outer edge extending from both sides of the lower end. The lower end of the first transfer platform is fixed above the transfer pad.

[0007] The lower end of the second transfer platform is a hollow rectangle with a third thickness, and the upper end is an outer edge extending from both sides of the lower end. The lower end of the second transfer platform is embedded and fixed on the upper surface of the lower end of the first transfer platform;

[0008] The vibration isolator is arranged between two outer edges of the first transfer platform and the second transfer platform;

[0009] The camera is fixedly mounted on the outer edge of the second transfer platform, and the lens passes through the second transfer platform, the first transfer platform and the transfer pad in sequence.

[0010] Optionally, the number of vibration isolators is four, which are arranged on four vertex corners of two outer edges of the first transfer platform.

[0011] Optionally, after the camera is installed, the distance between the lens and the camera cabin glass is not less than 70 mm.

[0012] Optionally, the height of the center of gravity of the camera is consistent with the supporting plane of the vibration isolator.

[0013] Optionally, the distance between the bottom of the second transfer platform and the supporting plane of the vibration isolator is designed to be the height of the center of gravity of the camera, and the center of gravity of the camera is located at the center of the four vibration isolators.

[0014] Optionally, outer edges of the first transfer platform and the second transfer platform are both designed along the span direction of the aircraft.

[0015] Optionally, the transfer pad, the first transfer platform and the second transfer platform are integrally machined from 7050 aluminum alloy pre-stretched plates.

[0016] Optionally, reinforcing ribs are provided under outer edges of the first transfer platform and the second transfer platform.

[0017] The present invention provides a vibration isolation system for an aerial camera. Through a vibration suppression method of vibration isolation, the rigid connection between the camera and the body is converted into an elastic connection through a vibration isolation device, and the kinetic energy is converted into elastic potential energy, thereby blocking the transmission of body vibration to the camera and reducing the influence of body vibration on the camera. The system is very worthy of popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the vibration isolation component;

[0019] Figure 2 This is a schematic diagram of the installation of the vibration isolation device;

[0020] Figure 3 is a schematic diagram of the structure of the first transfer platform;

[0021] Figure 4 is a schematic diagram of the structure of the second transfer platform;

[0022] Figure 5 This is a schematic diagram of the installation of the transfer pad;

[0023] Figure 6 It is a schematic diagram of the structure of the transfer pad;

[0024] Description of reference numerals:

[0025] 1-Transfer plate;

[0026] 2-Vibration isolation device;

[0027] 3- The first transfer platform;

[0028] 4-Vibration isolator;

[0029] 5- Second transfer platform;

[0030] 6-Photographic cabin glass;

[0031] 7- Camera;

[0032] 8- Camera center of gravity;

[0033] 9-Isolator support plane. DETAILED DESCRIPTION

[0034] The vibration isolation system for an aerial camera provided by the present invention is explained below with reference to the accompanying drawings.

[0035] like Figure 1-6 As shown, the present invention provides a vibration isolation system for an aerial camera. The vibration isolation principle of the vibration isolation method and device for an aerial camera provided by the present invention is to install the device to be isolated on a vibration isolator to eliminate or reduce the propagation of vibration, which is one of the important means to eliminate vibration and impact hazards.

[0036] The present invention adopts a vibration isolation vibration suppression method to provide a camera vibration isolation system for an aerial camera, including a vibration isolation device 2 and an adapter pad 1, wherein the vibration isolation device 2 is installed between the mount and the adapter pad, including two adapter platforms and four vibration isolators, which are used to reduce the vibration on the aircraft from being transmitted to the camera, and the adapter pad 1 is installed between the structural mounting bottom plate and the vibration isolation device, which is used to ensure that the distance between the lens of the camera 7 and the camera cabin glass 6 is not less than 70 mm after the camera 7 is installed, and the composition is as follows Figure 1 To meet the requirements of camera use, the height of the camera's center of gravity 8 is consistent with the vibration isolator support plane 9, and the camera's center of gravity is located at the center of the four vibration isolators, as shown in the figure. Figure 2 shown.

[0037] The bottom of the first transfer platform 3 is consistent with the bottom shape and interface of the original transfer pad of the camera. The upper part is designed with double-sided outer edges along the aircraft span direction for placing vibration isolators. Reinforcement ribs are arranged under the double-sided outer edges. The 7050 aluminum alloy pre-stretched plate is used for overall machining to improve rigidity and reduce deformation and stress. Figure 3 shown.

[0038] The second transfer platform 5 is used to install the camera. It is designed with double-sided outer edges along the aircraft span direction and is connected to the first transfer platform through four symmetrically arranged vibration isolators 4 to form a vibration isolation device. The camera is installed on the bottom surface of the second transfer platform through the support plate nut. To ensure that the support plane of the vibration isolator passes the center of gravity of the camera, the distance between the bottom of the second transfer platform and the support plane of the vibration isolator is designed to be the height of the center of gravity of the camera. It is made of 7050 aluminum alloy pre-stretched plate and integrally machined. Figure 4 shown.

[0039] Exemplarily, the vibration isolator is a three-dimensional (vertical, lateral and heading) vibration isolation device, which has an all-metal structure and can be composed of elastic parts such as springs.

[0040] The upper and lower interfaces of the adapter plate are consistent with the bottom shape and interface of the original adapter plate of the camera, match the bottom interface of the first adapter platform and the interface of the structure installation base plate, and are installed between the structure installation base plate and the vibration isolation device to ensure that the distance between the lens and the camera cabin glass after the camera is installed is not less than 70mm. Figure 5 As shown, the 7050 aluminum alloy pre-stretched plate is used for overall machining. The structure of the transfer pad is shown in the figure below. Figure 6 shown.

[0041] Before using the camera to perform photography tasks, first connect the first transfer platform, the vibration isolator, and the second transfer platform with bolts to form a whole. When performing photography tasks, connect the transfer pad to the aircraft structure mounting base, then install the vibration isolation device on the transfer pad, and finally use bolts to install the camera on the four support plate nuts on the bottom surface of the second transfer platform of the vibration isolation device.

[0042] Exemplarily, the length×width×height of the adapter support is 660 mm×526 mm×167 mm.

[0043] Exemplarily, the length×width×height of the first transfer platform is 808 mm×660 mm×187 mm.

[0044] Exemplarily, the length×width×height of the second transfer platform is 790 mm×656 mm×131 mm.

Claims

1. A vibration isolation system for an aerial camera, characterized in that: include: Vibration isolation devices and adapter pads; The vibration isolation device comprises: a first transfer platform, a second transfer platform and a plurality of vibration isolators; The adapter plate is a hollow rectangle with a first thickness, and four top corners of both end faces are provided with mounting holes, and is mounted on the aircraft structure mounting bottom plate; The lower end of the first transfer platform is a hollow rectangle with a second thickness, and the upper end is an outer edge extending from both sides of the lower end. The lower end of the first transfer platform is fixed above the transfer pad. The lower end of the second transfer platform is a hollow rectangle with a third thickness, and the upper end is an outer edge extending from both sides of the lower end. The lower end of the second transfer platform is embedded and fixed on the upper surface of the lower end of the first transfer platform; The vibration isolator is arranged between two outer edges of the first transfer platform and the second transfer platform; The camera is fixedly mounted on the outer edge of the second transfer platform, and the lens passes through the second transfer platform, the first transfer platform and the transfer pad in sequence.

2. The vibration isolation system for an aerial camera according to claim 1, characterized in that: The number of the vibration isolators is four, which are arranged on four vertex corners of two outer edges of the first transfer platform.

3. The vibration isolation system for an aerial camera according to claim 1, characterized in that: After the camera is installed, the distance between the lens and the camera cabin glass should be no less than 70mm.

4. The vibration isolation system for an aerial camera according to claim 1, characterized in that: The height of the camera's center of gravity is consistent with the support plane of the vibration isolator.

5. The vibration isolation system for an aerial camera according to claim 1, characterized in that: The distance between the bottom of the second transfer platform and the supporting plane of the vibration isolator is designed to be the height of the center of gravity of the camera, and the center of gravity of the camera is located at the center of the four vibration isolators.

6. The vibration isolation system for an aerial camera according to claim 1, characterized in that: The outer edges of the first transfer platform and the second transfer platform are both designed along the span direction of the aircraft.

7. The vibration isolation system for an aerial camera according to claim 1, characterized in that: The transfer pad, the first transfer platform and the second transfer platform are integrally machined from 7050 aluminum alloy pre-stretched plates.

8. The vibration isolation system for an aerial camera according to claim 1, characterized in that: Reinforcement ribs are arranged under the outer edges of the first transfer platform and the second transfer platform.

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