CN111740207A - Three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal - Google Patents
Three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal Download PDFInfo
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- CN111740207A CN111740207A CN202010629875.3A CN202010629875A CN111740207A CN 111740207 A CN111740207 A CN 111740207A CN 202010629875 A CN202010629875 A CN 202010629875A CN 111740207 A CN111740207 A CN 111740207A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
Abstract
The invention discloses a three-point bearing large-scale heavy-load high-precision two-dimensional machine phase-sweeping radar antenna pedestal, which relates to the technical field of large-scale phased array radar antennas and specifically comprises a left pitching support, a right pitching support, a support arm, an azimuth turntable, a roller group, an azimuth track, a central pivot, a central support and a drive, an integrated track and rack, an azimuth measuring mechanism and a pitching angle measuring mechanism, wherein the left pitching support and the right pitching support are fixed on the azimuth turntable through the support arm, the integrated track and the rack are arranged on a back frame of a array surface, the roller group is uniformly distributed and rotatably arranged on the bottom surface of the azimuth turntable, the roller group is arranged on the azimuth track in a rolling manner, the central pivot is arranged in the middle of the bottom surface of the azimuth turntable, the azimuth measuring mechanism is coaxially arranged with an azimuth axis of an antenna pedestal. In the implementation process of the invention, the structure is simple, the design is ingenious, the work is reliable, and the method is effective and feasible.
Description
Technical Field
The invention relates to the technical field of large phased array radar antennas, in particular to a three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal.
Background
The two-dimensional phase-scanning radar antenna pedestal adopts double-shaft mechanical scanning to replace partial phase scanning, greatly reduces the cost and weight of a pure phase-scanning radar system, increases the scanning range and the tracking performance, and becomes an indispensable important component of a phased array radar. With the continuous increase of the scale and the continuous improvement of the precision of the phased array radar array surface, the array surface is required to have good rigidity to realize the precision under different pitching angles, and new challenges are provided for the structural design of the array surface. However, the rigidity difference of the prior array surface structure is large under different pitch angles, the array surface generates heave deformation in the middle under the two-point support of the traditional antenna base, the accuracy change of the array surface is large under different pitch angles, and the requirement of high planeness of a large-span array surface cannot be met.
The structural layout and design of the large two-dimensional organic phase scanning array radar antenna pedestal aiming at multi-point support with the weight of more than 100 tons and the supporting span of more than 10 meters on the left side and the right side are not searched for relevant documents at present.
Disclosure of Invention
The invention aims to provide a three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a three-point bearing large-scale heavy-load high-precision two-dimensional machine phase-scanning radar antenna pedestal comprises a left pitching support, a right pitching support, a support arm, an orientation rotary table, a roller group, an orientation track, a center pivot, a center support and a drive, an integrated track and a rack, an orientation angle measuring mechanism and a pitching angle measuring mechanism, wherein the left pitching support, the right pitching support, the center support and the drive are arranged on a back plane integrated track and the rack to form a three-point bearing large-scale high-precision two-dimensional machine phase-scanning radar antenna pedestal pitching three-point bearing structure;
the three-point bearing large-scale high-precision two-dimensional machine phase-scanning radar antenna pedestal azimuth slewing bearing comprises an azimuth turntable, roller groups, an azimuth track and a central pivot, wherein the roller groups are uniformly distributed and rotatably arranged on the bottom surface of the azimuth turntable, the roller groups are arranged on the azimuth track in a rolling manner, and the central pivot is arranged in the middle of the bottom surface of the azimuth turntable;
the azimuth angle measuring mechanism is coaxially arranged with the azimuth axis of the antenna pedestal, one end of the azimuth angle measuring mechanism is fixed on the basis of the azimuth track, and the other end of the azimuth angle measuring mechanism is connected with the azimuth turntable; the pitching angle measuring mechanism and the pitching shaft of the antenna pedestal are coaxially arranged, one end of the pitching angle measuring mechanism is arranged on the array shaft head, and the other end of the pitching angle measuring mechanism is arranged on the pitching bearing pedestal.
As a further scheme of the invention: and the left pitching support and the right pitching support adopt high-precision self-aligning rollers to automatically compensate the axis deflection caused by the deflection deformation of the shaft system.
As a further scheme of the invention: the integrated track and the rack are meshed with a central support and a pinion in the drive, the central support and the drive adopt double-motor synchronous anti-backlash control, and the integrated track and the rack are in tangential contact with a central support arranged on the azimuth turntable and a roller in the drive.
As a further scheme of the invention: the azimuth turntable is of a rectangular structure and consists of a cross beam, a longitudinal beam, a radiation beam and a center seat, 20mm and 16mm steel plates are welded into a box shape, and a measuring and mounting adjusting reference surface 20 is designed on each component.
As a further scheme of the invention: the roller train structure comprises a driving wheel and a driven wheel, the azimuth track adopts an evenly-divided 10-section respectively-processing and on-site tailor-welding structure, the single-section track adopts 40CrNi2MoA, the hardenability and the corrosion resistance are good, the wear resistance after heat treatment is good, 6 measuring reference holes 24 are finely processed on the step surface of the single-section track, and 4M 30 installation adjusting holes 25 are symmetrically arranged on the inner side and the outer side of an arc.
As a further scheme of the invention: and the central pivot adopts a high-precision single-row cylindrical roller bearing and is coaxially mounted with the azimuth axis of the antenna pedestal.
The invention discloses an antenna pedestal device capable of realizing high-precision rotary supporting and driving of a large two-dimensional phase-scanning radar array, which has the advantages of simple structure, ingenious design, reliable work, effective and feasible method and beneficial technical effects mainly embodied in the following aspects:
1) the three-point supporting and central centralized driving structure eliminates the problems that the center position of the array surface is greatly deformed under the support of two ends of the array surface with large span (the span reaches 10-20 m), and the accuracy of the array surface is reduced due to the torsional deformation of the array surface caused by the dispersed driving of shaft heads at two ends;
2) the antenna pedestal has reasonable structural layout and rigidity design, reduces the change of the contact cone angle of the roller caused by the load change of the central support position under different pitching angles while realizing high shafting precision, and realizes the good linear contact state of the large-bearing roller;
3) the coaxially mounted azimuth and elevation angle measuring mechanism is adopted, so that the influence of large bounce and deflection deformation on angle measuring precision is reduced, and the requirement of the system on high angle measuring precision is met;
4) the wheel set balance beam structure with four groups of symmetrically distributed wheel sets and a master wheel set and a slave wheel set is adopted, so that the influence of wheel pressure fluctuation on the driving force of the system is eliminated, the sufficient friction force of wheel rail driving is ensured, and the high dynamic response of the system is realized;
5) the azimuth track is made of high-quality alloy structural steel 40CrNi2MoA, has good hardenability, large bearing capacity and good wear resistance, and is provided with a measuring reference hole and an installation adjusting hole, so that the high-precision and rapid measurement and installation and adjustment of the azimuth track can be realized.
Drawings
Fig. 1 is a schematic structural diagram of a three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal.
Fig. 2 is a schematic structural diagram of an azimuth and elevation angle measuring mechanism of a three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal.
Fig. 3 is a structural schematic diagram of a central support and drive of a three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal.
Fig. 4 is a schematic structural diagram of an azimuth turntable in a three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal.
Fig. 5 is a schematic structural diagram of an azimuth wheel set in a three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal.
Fig. 6 is a schematic structural diagram of a roller group in a three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal.
Fig. 7 is a schematic diagram of an overall structure of an azimuth track in a three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal.
Fig. 8 is a schematic structural diagram of each section of an azimuth track in a three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, in the embodiment of the present invention, a three-point bearing large-scale heavy-load high-precision two-dimensional machine phase-scanning radar antenna pedestal includes a left pitching support 2, a right pitching support 3, a support arm 4, an azimuth turntable 5, a roller set 6, an azimuth rail 7, a center pivot 8, a center support and drive 9, an integrated rail and rack 10, an azimuth angle measuring mechanism 11 and a pitching angle measuring mechanism 12, wherein a span between the left pitching support 2 and the right pitching support 3 is 16.5m, and a center diameter of the azimuth rail 7 is 16.5 m;
the three-point bearing large-scale high-precision two-dimensional phase-scanning radar antenna pedestal pitching three-point bearing structure consists of a left pitching support 2, a right pitching support 3, a central support and drive 9, and an integrated track and a rack 10 which are arranged on a wavefront, wherein the left pitching support 2 and the right pitching support 3 are fixed on an azimuth turntable 5 through a support arm 4, and the left pitching support 2 and the right pitching support 3 both adopt a high-precision aligning roller 13 to realize automatic compensation of axis deflection caused by shaft system deflection deformation;
the integrated track and the rack 10 are arranged on the back frame of the array surface 1, the diameter of the track contact surface of the integrated track and the rack 10 is 14.41m, the integrated track and the rack 10 are in tangential contact with a central support arranged on the azimuth turntable 5 and a roller 14 in the drive 9, the diameter of the roller in the central support and the drive 9 is 0.6m, and the central auxiliary support with the maximum load of 30 tons is realized;
the integrated track and rack 10 is provided with a rack module 25, a pitch diameter of 14.5m, a sector range of 111.5 degrees and a gear ring arc length of about 14m, a rack in the integrated track and rack 10 is meshed with a pinion 15 in a central support and drive 9, a front 1 is driven to rotate under the drive of a motor reducer, and the central support and the drive 9 adopt dual-motor synchronous anti-backlash control to realize high-precision transmission of the pitching motion of the front 1;
as shown in fig. 1, 4 and 5, the three-point bearing large-scale high-precision two-dimensional machine phase-scanning radar antenna pedestal azimuth slewing bearing comprises an azimuth turntable 5, roller groups 6, azimuth rails 7 and a central pivot 8, wherein the roller groups 6 are uniformly distributed and rotatably mounted on the bottom surface of the azimuth turntable 5, the roller groups 6 are rotatably mounted on the azimuth rails 7, the central pivot 8 is mounted in the middle of the bottom surface of the azimuth turntable 5, the azimuth turntable 5 is of a rectangular structure, the azimuth turntable 5 is 16.84m long, 10.4m wide and 1.85m high, the azimuth turntable 5 comprises cross beams 16, longitudinal beams 17, radiation beams 18 and a central pedestal 19, the azimuth turntable is welded into a box shape by adopting 20mm and 16mm steel plates, the structural rigidity is good, the requirement of highway transportation size limit is met, a measuring and mounting and adjusting reference surface 20 is designed on each component, and rapid high-precision resetting, mounting and adjusting can be carried out.
As shown in fig. 6, the roller train 6 structure comprises a driving wheel 21 and a driven wheel 22, the diameter of the roller is 1.2m, as shown in fig. 7 and 8, the azimuth rail 7 considers road transportation, and adopts a structure of dividing 10 sections equally and respectively processing and splicing welding on site, the single-section rail 23 adopts 40CrNi2MoA, the hardenability and the corrosion resistance are good, the wear resistance after heat treatment is good, the central arc length of the single-section rail 23 is about 5.2 m, 6 measurement reference holes 24 are finely processed on the step surface of the single-section rail 23, and the roller train can be conveniently used for measuring the levelness and the centripetal centring degree of the azimuth rail; the inner side and the outer side of the arc are symmetrically provided with 4M 30 mounting adjusting holes 25 which can be conveniently used for hoisting and radial traction centering adjustment of the single-section track 23;
the central pivot 8 adopts a high-precision single-row cylindrical roller bearing which is coaxially arranged with an azimuth axis of the antenna base, four roller groups 6 which are symmetrically distributed on the azimuth turntable 5 and an azimuth track 7 which is precisely leveled are utilized to realize high-precision azimuth axial support of the antenna base, and the central pivot 8 is utilized to realize high-precision radial positioning of the antenna base; the direction rotary motion is realized by the friction transmission between the driving wheel 21 and the direction track 6 in the roller set 6;
as shown in fig. 2, the azimuth angle measuring mechanism 11 is coaxially installed with the azimuth axis of the antenna base, one end of the azimuth angle measuring mechanism 11 is fixed on the basis of the azimuth track 7, and the other end of the azimuth angle measuring mechanism 11 is connected with the azimuth turntable 5; the pitching angle measuring mechanism 12 is coaxially mounted with a pitching shaft of the antenna pedestal, one end of the pitching angle measuring mechanism 12 is mounted on the array shaft head, and the other end of the pitching angle measuring mechanism 12 is mounted on the pitching bearing pedestal; and 5' azimuth and elevation angle measurement of the antenna pedestal are realized by utilizing displacement reducing mechanisms and high-precision angle measurement elements in the angle measurement mechanism 11 and the elevation angle measurement mechanism 12.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention without departing from the spirit and scope of the invention.
Claims (6)
1. A three-point bearing large-scale heavy-load high-precision two-dimensional machine phase-scanning radar antenna pedestal comprises a left pitching support (2), a right pitching support (3), a support arm (4), an azimuth turntable (5), a roller group (6), an azimuth track (7), a central pivot (8), a central support and drive (9), an integrated track and rack (10), an azimuth angle measuring mechanism (11) and a pitching angle measuring mechanism (12), the large-scale high-precision two-dimensional phase-scanning radar antenna pedestal pitching three-point bearing structure is characterized in that the left pitching support (2), the right pitching support (3), the central support and drive (9) and the integrated track and rack (10) arranged on the array surface form a three-point bearing large-scale high-precision two-dimensional phase-scanning radar antenna pedestal pitching three-point bearing structure, the left pitching support (2) and the right pitching support (3) are fixed on the azimuth turntable (5) through the support arm (4), and the integrated track and rack (10) are arranged on a back frame of the array surface (1);
the three-point bearing large-scale high-precision two-dimensional machine phase-scanning radar antenna pedestal azimuth slewing bearing comprises an azimuth turntable (5), roller groups (6), azimuth rails (7) and a central pivot (8), wherein the roller groups (6) are uniformly distributed and rotatably arranged on the bottom surface of the azimuth turntable (5), the roller groups (6) are arranged on the azimuth rails (7) in a rolling manner, and the central pivot (8) is arranged in the middle of the bottom surface of the azimuth turntable (5);
the azimuth angle measuring mechanism (11) is coaxially mounted with an azimuth axis of the antenna base, one end of the azimuth angle measuring mechanism (11) is fixed on the basis of the azimuth track (7), and the other end of the azimuth angle measuring mechanism (11) is connected with the azimuth turntable (5); the pitching angle measuring mechanism (12) is coaxially mounted with the pitching shaft of the antenna pedestal, one end of the pitching angle measuring mechanism (12) is mounted on the array shaft head, and the other end of the pitching angle measuring mechanism (12) is mounted on the pitching bearing pedestal.
2. The three-point bearing large heavy-duty high-precision two-dimensional phase-scanning radar antenna pedestal according to claim 1, wherein the left pitching bearing (2) and the right pitching bearing (3) both adopt high-precision self-aligning rollers (13) to realize automatic compensation of axis deflection caused by shaft system deflection deformation.
3. A three-point bearing large-scale heavy-duty high-precision two-dimensional mechanical scanning radar antenna pedestal according to claim 1, characterized in that the integrated track and rack (10) is meshed with a central bearing and a pinion (15) in a drive (9), the central bearing and the drive (9) adopt dual-motor synchronous backlash elimination control, and the integrated track and rack (10) is in tangential contact with a roller (14) in the drive (9) and the central bearing installed on an azimuth turntable (5).
4. A three-point bearing large heavy-duty high-precision two-dimensional machine-scanning radar antenna pedestal according to claim 1, wherein the azimuth turntable (5) is of a rectangular structure, the azimuth turntable (5) is composed of cross beams (16), longitudinal beams (17), radiation beams (18) and a center base (19), the cross beams and the longitudinal beams are welded into a box shape by adopting 20mm and 16mm steel plates, and each component is designed with a measuring and installation adjusting reference surface 20.
5. The three-point bearing large-scale heavy-load high-precision two-dimensional machine phase-scanning radar antenna pedestal according to claim 1, wherein the roller group (6) comprises a driving wheel (21) and a driven wheel (22), the azimuth track (7) adopts a structure of dividing 10 sections equally and respectively processing and splicing welding on site, the single-section track (23) adopts 40CrNi2MoA, the hardenability and the corrosion resistance are good, the wear resistance after heat treatment is good, 6 measurement datum holes 24 are finely processed on the step surface of the single-section track (23), and 4M 30 installation adjusting holes 25 are symmetrically arranged on the inner side and the outer side of an arc.
6. A three-point bearing large-scale heavy-duty high-precision two-dimensional phase-scanning radar antenna pedestal according to claim 1, wherein a high-precision single-row cylindrical roller bearing is adopted in the central pivot (8) and is coaxially mounted with an azimuth axis of the antenna pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010629875.3A CN111740207A (en) | 2020-07-03 | 2020-07-03 | Three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010629875.3A CN111740207A (en) | 2020-07-03 | 2020-07-03 | Three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal |
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| CN111740207A true CN111740207A (en) | 2020-10-02 |
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| CN202010629875.3A Pending CN111740207A (en) | 2020-07-03 | 2020-07-03 | Three-point bearing large-scale heavy-load high-precision two-dimensional phase-scanning radar antenna pedestal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799746A (en) * | 2022-04-11 | 2022-07-29 | 中国电子科技集团公司第三十八研究所 | Shafting machining method and assembly method of large-span radar rotary table |
| USD962799S1 (en) * | 2020-06-11 | 2022-09-06 | China Meteorological Administration Meteorological Observation Center | Phased-array radar |
Citations (1)
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| CN110364806A (en) * | 2019-08-09 | 2019-10-22 | 中国电子科技集团公司第十四研究所 | A kind of heavy duty antenna arrays of radar 3, space high rigidity support device and method |
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2020
- 2020-07-03 CN CN202010629875.3A patent/CN111740207A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110364806A (en) * | 2019-08-09 | 2019-10-22 | 中国电子科技集团公司第十四研究所 | A kind of heavy duty antenna arrays of radar 3, space high rigidity support device and method |
Non-Patent Citations (1)
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| 陈亚峰等: ""一种高精度测角装置的设计及研究"", 《现代雷达》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD962799S1 (en) * | 2020-06-11 | 2022-09-06 | China Meteorological Administration Meteorological Observation Center | Phased-array radar |
| CN114799746A (en) * | 2022-04-11 | 2022-07-29 | 中国电子科技集团公司第三十八研究所 | Shafting machining method and assembly method of large-span radar rotary table |
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Application publication date: 20201002 |