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Miniature antenna turntable

A technology of small antennas and turntables, applied in radio wave measurement systems, instruments, etc., can solve problems such as difficult structure design, and achieve the effect of reducing size and weight

Active Publication Date: 2017-05-31
CHINA PRECISION ENG INST FOR AIRCRAFT IND AVIC
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

At present, the two-axis rotation range has increased from ±45° to ±62°, the size limit has been reduced to ≤200mm×200mm×300mm, the weight limit is ≤15KG, and it needs to bear 10KG and has a pitching moment of 15Nm. The improvement of these indicators makes interference The problem is more prominent and the structure is more difficult to design

Method used

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and embodiment technical solution of the present invention is described in further detail:

[0022] See attached Figure 1~6 As shown, this kind of small antenna turntable, the turntable includes the azimuth base 42 with the top open, the "cross" balance frame 2, the azimuth axis system and the pitch axis system that intersect vertically, the pitch axis system has three-stage reduction, one-stage planetary gear , one-stage bevel gear and one-stage worm gear to achieve self-locking and high-torque pitching, the pitching motor and transmission device are placed under the pitching balance frame to reduce the size of the equipment, ensure sufficient rotation space for pitching, and have a counterweight function; It is characterized in that: the azimuth axis system and the pitch axis system are respectively fixed in the two vertical directions of the "cross" balance frame 2, and the azimuth axis system is fixed on the top of the...

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Abstract

The invention relates to a miniature antenna turntable which is provided with an azimuth axis system and a pitch axis system which are perpendicularly crossed. A symmetrical integral structure design is utilized, thereby ensuring an enough antenna rotation space. In the azimuth axis system, transmission between a disc type motor and a gear is adopted, thereby reducing axial structure dimension. In the pitch axis system, self-locking and large-moment pitching of a servo motor is realized through three-stage transmission, and furthermore a motor and a transmission device are below a balancing frame, thereby realizing compact structure. The miniature antenna turntable has advantages of small dimension, small weight, large moment and high precision.

Description

technical field [0001] The invention relates to a small-sized antenna turntable, which is used for the installation and high-precision rotation of flat plate crack antennas during the electrical performance test of a radome, and belongs to the field of test equipment. Background technique [0002] Radome is an important part of aircraft rectification and navigation system, and its electrical performance is a very important performance index. During the electrical performance test of the radome, the antenna is installed on the antenna turntable to simulate the relative movement between the antenna and the radome. The antenna turret has two rotational degrees of freedom, azimuth and pitch, and needs to achieve high-precision rotation within a certain angle range, so that the antenna can be accurately rotated to the target position. Due to the relatively small size of the small radome, the antenna and the antenna turret need to be installed in the narrow space inside the radom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40
CPCG01S7/4004
Inventor 施嘲风
Owner CHINA PRECISION ENG INST FOR AIRCRAFT IND AVIC
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