Rotary table for large-inertia radar

Abstract

The invention provides a rotary table for a large-inertia radar, which comprises a base fixed on a carriage, a rotary table is rotatably arranged on the base, two ends of the rotary table in the length direction are respectively provided with a supporting seat, and the two supporting seats are rotatably matched with two ends of an antenna skeleton respectively; when the length direction of the turntable is parallel to the length direction of the carriage, the turntable and the antenna framework are located in the vertical space of the carriage; two ends of the antenna framework are respectively provided with a rotating shaft which is in running fit with the supporting seat, a rotating gear is fixed on each rotating shaft, two driving motors are arranged on the supporting seat, and driving gears which are meshed with the rotating gears are fixed at the output ends of the driving motors. The two driving gears are arranged on the rotating gears at the two ends respectively, the four driving motors on the two sides conduct electric anti-backlash at the same time, distortion of a large-span antenna array plane in the anti-backlash process is eliminated, and therefore the transmission torsional rigidity of a large-inertia radar is improved.

Description

technical field [0001] The invention relates to the technical field of radar turntables, in particular to a turntable for large inertia radars. Background technique [0002] The measurement radar needs to be able to adjust the orientation according to the target, and is generally fixed on the turntable to facilitate the rotation and adjustment of the attitude. At the same time, in order to improve the maneuverability, the vehicle-mounted radar turntable is generally used, such as a vehicle-mounted radar azimuth turntable provided by the invention patent application with the publication number CN109506096A , the radar is driven to rotate through the matching structure of the motor and the gear; this method is more convenient for general small radars. [0003] At present, in order to improve the detection capability, ultra-large antenna array radar has become a development trend. There have been antenna arrays with a mechanical aperture length of about 10 meters, and the inert...

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Problems solved by technology

[0003] At present, in order to improve the detection capability, ultra-large antenna array radar has become a development trend. There have been antenna arrays with a mechanical aperture length of about 10 meters, and the inertia of the radar increases significantly with the increase of the mechanical aperture, and the large inertia radar In order to meet the requirements of follow-up tracking, the size and weight of the turntable can only be increased, and it needs to have sufficient transmission stiffness, which will bring inconvenience to the transportation of the whole vehicle and even exceed the transportation limit

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