CN102195133A - Radar antenna pitching pushing mechanism based on ball screw and double push rod structure - Google Patents
Radar antenna pitching pushing mechanism based on ball screw and double push rod structure Download PDFInfo
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- CN102195133A CN102195133A CN2010105863907A CN201010586390A CN102195133A CN 102195133 A CN102195133 A CN 102195133A CN 2010105863907 A CN2010105863907 A CN 2010105863907A CN 201010586390 A CN201010586390 A CN 201010586390A CN 102195133 A CN102195133 A CN 102195133A
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Abstract
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
The invention belongs to the mechanical transmissioning technology field, specifically is on airborne platform, uses the two push rod pushing mechanisms of ball-screw, drives radar antenna and carries out elevating movement, realizes the pitching mechanical scanning of radar antenna wave beam.
Technical background
The operation principle of radar is the launching electromagnetic wave wave beam, run into back echo behind institute's detection of a target, after the acceptance through data processing to determine the position of institute's detection of a target with respect to radar, radar just can detect target in the electromagnetic wave beam scope that radar is launched so target needs, because the electromagnetic wave beam width is certain, often do not satisfy the needs of monitoring extensive area, so need antenna to carry out mechanical scanning to satisfy instructions for use.
The mechanical scanning type of drive that ground radar adopts usually is that servomotor drives decelerator deceleration rear drive antenna rotating shaft realization antenna movement, also can directly use the rotating shaft of torque motor direct driven antenna to carry out scanning motion, these two kinds of motion modes all need at antenna rotary shaft place installation driving mechanism, these two kinds of type of drive all require load (antenna etc.) center of gravity to overlap with the centre of gyration as far as possible simultaneously, thereby obtain better servo performance to reduce moment of inertia, this just need carry out trim to load, cause load to increase the weight of thus, simultaneously need choose the motor and the decelerator of bigger moment in order to satisfy servo performance, from and cause the increasing of equipment volume and weight.Because the difference of the operational environment of airborne radar and ground radar, requirement to gadget is also different, at first, fitting limit and weight that airborne platform can provide are limited, and this just requires airborne equipment should try one's best under the situation that satisfies the function instructions for use lightly; Secondly, the airborne platform environment is more more abominable than ground surface platform environment, and this has just proposed higher resistance to shock requirement to airborne equipment.Based on above condition, under airborne situation, often can not adopt the mode of trim during laod unbalance, if also adopt the ground radar kind of drive, can cause Drive Structure not satisfy the requirement of volume and weight.
Airborne radar is different with general land-based radar operational environment in addition.When general land-based radar was worked, its workbench remained static, though also can be vibrated and impact in the march process, does not influence the performance of radar performance.And airborne radar is always worked in vibration, shock environment, must adapt to airborne vibration, shock environment.Under so abominable vibratory impulse environment, the wave beam stable problem of antenna answers emphasis to consider, if the amplitude of antenna has exceeded the beamwidth scope, radar will lose objects occur or targetpath is discontinuous, influence the performance of radar performance, thus safety not only wanted, and want operate as normal.
Summary of the invention
The problem to be solved in the present invention is: for make radar can be in the vibration of airborne platform, shock environment operate as normal, proposed radar antenna pitching pushing mechanism, solved airborne radar antenna antenna under abominable vibratory impulse condition and drive and the wave beam stable problem based on the two pusher structures of ball-screw.
The technical scheme of the problem that the present invention solves adopts the version of two pushing mechanisms, the structure of two push rods comprises driven pushing mechanism and active pushing mechanism, and driven pushing mechanism and active pushing mechanism symmetry are installed in the back side of antenna and are separately fixed on the base plate.Described active pushing mechanism adopts direct current machine as drive source, and driven antenna is done the pitching scanning motion around the antenna support rotating shaft; Meanwhile, antenna drives driven pushing mechanism motion.In active pushing mechanism part, adopted direct current machine by one-level gear drive speed governing, to rotatablely move by the ball-screw width of cloth and change the rectilinear motion of nut into, the promotion antenna carries out the elevating movement around the antenna support rotating shaft, realizes the height scanning of antenna beam.
In driven pushing mechanism part, the elevating movement of antenna drives the ball-screw width of cloth, the rectilinear motion of nut is converted into rotatablely moving of leading screw, utilize the moment of friction of the ball-screw width of cloth, restriction antenna vibratory impulse amplitude, make the vibratory impulse amplitude of antenna be limited in the allowed band, guarantee the radar operate as normal.
The two push rod antenna pitching pushing mechanisms of ball-screw of the present invention have following characteristics:
(1) with the servo-drive mode of existing radar antenna, antenna does not need trim, does not increase extra weight, and pushing mechanism has little, in light weight, the reliable high characteristics of volume, can satisfy radar in the instructions for use of airborne abominable vibration under the condition.
(2) structure of the two push rods of employing realizes the pitching scanning motion of radar antenna, utilizes and effectively reduces the amplitude of radar antenna under airborne vibratory impulse condition from the pushing mechanism damping, has stablized the radar antenna wave beam.Adopt two pushing mechanisms to guarantee the balance of antenna movement simultaneously.
Antenna pitching pushing mechanism of the present invention is through repeatedly vibratory impulse test and be installed on homemade " straight-9 " armed helicopter and carry out the live simulation flight test of ground, result of the test shows: the two push rod antenna pitching pushing mechanisms of this ball-screw can be finished the radar antenna elevating movement, and (antenna shake angle is 1 ° when adopting single transfer bar mechanism to have the stablizing effect of good antenna beam, and adopt two transfer bar mechanism aft antenna shake angles is 0.30 °, and stablizing effect is very obvious).
Description of drawings
Fig. 1 is the two push rod antenna pitching pushing mechanism structural representations based on ball-screw of the present invention
Fig. 2 is an active pushing mechanism schematic diagram
Fig. 3 is driven pushing mechanism schematic diagram
Embodiment
With reference to above-mentioned accompanying drawing, the specific embodiment of the present invention is described in detail.
Referring to Fig. 1, the present invention adopts the two transfer bar mechanisms of ball-screw by driven pushing mechanism 2, and initiatively pushing mechanism 4 constitutes.Driven pushing mechanism 2 and active pushing mechanism 4 symmetries are installed in the back side of antenna 3, and be separately fixed on the base plate 1, initiatively pushing mechanism 4 driven antenna 3 are carried out elevating movement around antenna support rotating shaft 5, finish the pitching scan function of radar, the pitching of antenna 3 simultaneously drives driven pushing mechanism 2 motions, the moment of friction of utilizing driven pushing mechanism 2 to produce reduces the amplitude of antenna 3 under the vibratory impulse condition, thereby reaches the effect of stability radar antenna beam.
Referring to Fig. 2, initiatively pushing mechanism 4 is by direct current machine 6, gear 7, ball-screw supporting seat 8, bearing 9, ball screw assembly, (being made up of leading screw 10 and nut 11), antenna adapter 12, gear 13, base 14 compositions.Gear 7 is connected on direct current machine 6 driving shafts and with gear 13 and meshes, the lower end of ball-screw 10 is fixed in the hole of gear 13, the ball-screw two ends are fixed on the ball-screw supporting seat 8 by bearing 9, nut 11 is connected the active pushing mechanism by antenna adapter 12 with antenna, initiatively pushing mechanism 4 is fixed on the base plate 1 by base 14.During work, direct current machine 6 drives leading screw 10 by gear 7 and gear 13 speed governing and rotates, and the rotation of leading screw 10 is converted into nut 11 carries out linear reciprocating motion along leading screw 10 axis, thereby drive connected antenna adapter 12, be translated into antenna 3 and carry out elevating movement around antenna support rotating shaft 5.Realize the pitching scanning of antenna 3 by the rotation direction of control direct current machine 6.
Referring to Fig. 3, driven pushing mechanism 2 is by ball screw assembly, (being made up of nut 15 and leading screw 18), ball-screw supporting seat 16, and bearing 17, antenna adapter 19, base 20 is formed.Ball-screw 18 is fixed on the ball-screw supporting seat 16 by bearing 17, and nut 15 is connected driven pushing mechanism by antenna adapter 19 with antenna, and driven pushing mechanism 2 is fixed on the base plate 1 by base 20.Antenna 3 is done around antenna support rotating shaft 5 with active pushing mechanism 4 and is carried out elevating movement, drive nut 15 by antenna adapter 19 and carry out linear reciprocating motion along leading screw 18 axis, and the rectilinear motion of nut 15 is converted into the rotation of leading screw 18, utilize the moment of friction between the ball-screw width of cloth (nut 15 and leading screw 18), reduce the amplitude of antenna 3 under the vibratory impulse condition, thereby reach the effect of stability radar antenna beam.
Antenna pitching pushing mechanism of the present invention is through repeatedly vibratory impulse test and be installed on homemade " straight-9 " armed helicopter and carry out the live simulation flight test of ground, result of the test shows: the two push rod antenna pitching pushing mechanisms of this ball-screw can be finished the radar antenna elevating movement, and (antenna shake angle is 1 ° when adopting single transfer bar mechanism to have the stablizing effect of good antenna beam, and adopt two transfer bar mechanism aft antenna shake angles is 0.30 °, stablizing effect is very obvious), this mechanism's reliable operation, volume is little, in light weight, can satisfy radar fully in the instructions for use of airborne abominable vibration under the condition.
Claims (1)
1. radar antenna pitching pushing mechanism based on the two pusher structures of ball-screw, utilize ball-screw as the motion transmission part, adopt two pusher structures to promote the antenna elevating movement, it is characterized in that: the structure of two push rods comprises driven pushing mechanism (2) and active pushing mechanism (4), described driven pushing mechanism (2) and active pushing mechanism (4) symmetry are installed in the back side of antenna (3) and are separately fixed on the base plate (1), described active pushing mechanism (4) driven antenna (3) is done the pitching scanning motion around antenna support rotating shaft (5), meanwhile, antenna (3) drives driven pushing mechanism (2) motion, described active pushing mechanism (4) is by direct current machine (6), gear (7), ball-screw supporting seat (8), bearing (9), by ball-screw (10), nut (11), antenna adapter (12), gear (13) is formed, gear (7) is connected on direct current machine (6) driving shaft and with gear (13) and meshes, the lower end of ball-screw (10) is fixed in the hole of gear (13), the ball-screw two ends are fixed on the ball-screw supporting seat (8) by bearing (9), and nut (11) is connected the active pushing mechanism by antenna adapter (12) with antenna; Direct current machine (6) drives leading screw (10) by gear (7) and gear (13) and rotates, make nut (11) go up linear reciprocating motion at ball-screw (10), and drive antenna adapter (12) motion, realize that antenna (3) carries out elevating movement around antenna support rotating shaft (5); Described driven pushing mechanism (2) is by nut (15), ball-screw (18), ball-screw supporting seat (16), bearing (17), antenna adapter (19) is formed, ball-screw (18) is fixed on the ball-screw supporting seat (16) by bearing (17), and nut (15) is connected driven pushing mechanism by antenna adapter (19) with antenna; The elevating movement of antenna drives the ball-screw width of cloth by antenna adapter (19), the rectilinear motion of nut is converted into rotatablely moving of leading screw, utilize the moment of friction of the ball-screw width of cloth to reduce antenna at the vibratory impulse amplitude, improve antenna elevating movement smoothness, realize the stable of radar antenna wave beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010586390 CN102195133B (en) | 2010-12-10 | 2010-12-10 | Radar antenna pitching pushing mechanism based on ball screw and double push rod structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010586390 CN102195133B (en) | 2010-12-10 | 2010-12-10 | Radar antenna pitching pushing mechanism based on ball screw and double push rod structure |
Publications (2)
| Publication Number | Publication Date |
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| CN102195133A true CN102195133A (en) | 2011-09-21 |
| CN102195133B CN102195133B (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010586390 Expired - Fee Related CN102195133B (en) | 2010-12-10 | 2010-12-10 | Radar antenna pitching pushing mechanism based on ball screw and double push rod structure |
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| CN (1) | CN102195133B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406193A (en) * | 2015-11-25 | 2016-03-16 | 中国电子科技集团公司第三十八研究所 | Large radar antenna with pitching dual-motor synchronous driving mechanism |
| CN105811078A (en) * | 2016-03-29 | 2016-07-27 | 中国计量学院 | Retractable satellite antenna of underwater aircraft |
| CN112327254A (en) * | 2020-10-10 | 2021-02-05 | 南京誉葆科技有限公司 | Radar device applied to radio frequency integrated system |
| CN112510369A (en) * | 2020-11-24 | 2021-03-16 | 武汉滨湖电子有限责任公司 | Antenna every single move transmission with early warning protection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3982247A (en) * | 1975-04-09 | 1976-09-21 | Rohr Industries, Inc. | Antenna spring counterweight |
| CN1608804A (en) * | 2004-05-27 | 2005-04-27 | 张国梁 | Two-purpose grinding machine for lead screw and external circle |
| CN2901338Y (en) * | 2006-03-02 | 2007-05-16 | 中国兵器工业第二○六研究所 | Radar leveling device based on real time contacting earth detection |
| CN201256177Y (en) * | 2008-04-30 | 2009-06-10 | 中国兵器工业第二○六研究所 | Built-in over 360 deg. Limited azimuth radar antenna seat |
-
2010
- 2010-12-10 CN CN 201010586390 patent/CN102195133B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3982247A (en) * | 1975-04-09 | 1976-09-21 | Rohr Industries, Inc. | Antenna spring counterweight |
| CN1608804A (en) * | 2004-05-27 | 2005-04-27 | 张国梁 | Two-purpose grinding machine for lead screw and external circle |
| CN2901338Y (en) * | 2006-03-02 | 2007-05-16 | 中国兵器工业第二○六研究所 | Radar leveling device based on real time contacting earth detection |
| CN201256177Y (en) * | 2008-04-30 | 2009-06-10 | 中国兵器工业第二○六研究所 | Built-in over 360 deg. Limited azimuth radar antenna seat |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406193A (en) * | 2015-11-25 | 2016-03-16 | 中国电子科技集团公司第三十八研究所 | Large radar antenna with pitching dual-motor synchronous driving mechanism |
| CN105406193B (en) * | 2015-11-25 | 2018-07-13 | 中国电子科技集团公司第三十八研究所 | A kind of Large Radar Antenna with pitching two-shipper synchronous drive mechanism |
| CN105811078A (en) * | 2016-03-29 | 2016-07-27 | 中国计量学院 | Retractable satellite antenna of underwater aircraft |
| CN112327254A (en) * | 2020-10-10 | 2021-02-05 | 南京誉葆科技有限公司 | Radar device applied to radio frequency integrated system |
| CN112510369A (en) * | 2020-11-24 | 2021-03-16 | 武汉滨湖电子有限责任公司 | Antenna every single move transmission with early warning protection |
| CN112510369B (en) * | 2020-11-24 | 2023-05-09 | 武汉滨湖电子有限责任公司 | Antenna every single move transmission with early warning protection |
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| Publication number | Publication date |
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| CN102195133B (en) | 2013-08-28 |
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