Radar antenna pitching pushing mechanism based on ball screw and double push rod structure
A ball screw, push mechanism technology, applied in the direction of antenna, electrical components, etc., to achieve the effect of light weight, obvious stability effect, and ensure balance
Inactive Publication Date: 2013-08-28
中国兵器工业第二0六研究所 +1
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Problems solved by technology
Generally, when land-based radar is working, its working platform is in a static state. Although it will be subject to vibration and shock during the march, it does not affect the performance of the radar.
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Embodiment Construction
[0015] Referring to the above-mentioned drawings, specific embodiments of the present invention will be described in detail.
[0016] see figure 1 , the present invention adopts the double push rod mechanism of ball screw and is made up of driven mechanism 2 and driving mechanism 4. The driven pushing mechanism 2 and the active pushing mechanism 4 are symmetrically installed on the back side of the antenna 3, and are respectively fixed on the base plate 1. The active pushing mechanism 4 drives the antenna 3 to perform a pitching motion around the antenna support shaft 5 to complete the pitch scanning function of the radar. The pitch of the antenna 3 drives the driven driving mechanism 2 to move, and the friction torque generated by the driven pushing mechanism 2 is used to reduce the amplitude of the antenna 3 under vibration and shock conditions, thereby achieving the effect of stabilizing the radar antenna beam.
[0017] see figure 2 , the active push mechanism 4 is compo...
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The invention discloses a radar antenna pitching pushing mechanism based on a ball screw and a double push rod structure, belonging to the technical field of mechanical transmission and being applied to an airborne platform for driving a radar antenna to perform pitching mechanical scanning. In the invention, a ball screw is used for performing motion transmission, a double push rod structure is adopted, and a set of pushing mechanism serves as a master pushing mechanism to drive the antenna to perform pitching scanning; and the other set of pushing mechanism serves as a slave pushing mechanism and is driven to move by an antenna undergoing pitching motion, the friction torque of a ball screw pair is utilized to reduce the amplitude of the antenna under an airborne vibration impact condition, so that the effect of stabilizing the beam of the radar antenna is achieved. Proved by a plurality of ground vibration impact tests and actual combat flight simulation tests carried out by arranging a sample mechanism developed by the invention on a domestic Z-9 helicopter gunship, the sample mechanism can complete radar antenna pitching motion, has a favorable antenna beam stabilizing effect, and can completely meet the requirements for using radar under a severe airborne oscillation condition.
Description
technical field [0001] The invention belongs to the technical field of mechanical transmission, in particular, on an airborne platform, a ball screw double push rod push mechanism is used to drive a radar antenna for pitching motion, so as to realize the pitching mechanical scanning of the radar antenna beam. technical background [0002] The working principle of the radar is to emit an electromagnetic wave beam, and return the echo after encountering the detected target. After receiving, the data is processed to determine the position of the detected target relative to the radar. Therefore, the target must be within the range of the electromagnetic wave beam emitted by the radar. The radar can detect To the target, since the beam width of the electromagnetic wave is fixed, it often cannot meet the needs of monitoring a large area, so the antenna needs to be mechanically scanned to meet the requirements of use. [0003] The mechanical scanning driving method usually adopted ...
Claims
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IPC IPC(8): H01Q3/04
Inventor 郝刚李栋王克军
Owner 中国兵器工业第二0六研究所