CN206194936U - Big working space variably drives parallel antenna pedestal mechanism - Google Patents
Big working space variably drives parallel antenna pedestal mechanism Download PDFInfo
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- CN206194936U CN206194936U CN201621186727.4U CN201621186727U CN206194936U CN 206194936 U CN206194936 U CN 206194936U CN 201621186727 U CN201621186727 U CN 201621186727U CN 206194936 U CN206194936 U CN 206194936U
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Abstract
The utility model discloses a big working space variably drives parallel antenna pedestal mechanism belongs to the antenna device field. This antenna pedestal mechanism by one allocate the platform, one move the sport branch that the platform is the same with three structure and constitute. Sport branch comprises swinging arms, sharp drive unit, sport branch through the revolute pair respectively with allocate the platform, move the platform and be connected. With allocate the platform, move revolute pair that the platform is connected respectively along belonging to circumference 120 evenly distributed of being separated by separately. The utility model discloses a parallel mechanism can realize the working range internal antenna and to the continuous tracking of the arbitrary gesture non -blind area of target, cancel equipment such as sliding ring, joint, driving method is variable, can adapt to the big working space scope demand of antenna, and advantage such as have mechanism's symmetry, compact structure, rigidity is big, the pointing accuracy is high, bearing capacity is strong, dynamic characteristic is good.
Description
Technical field
The utility model belongs to antenna assembly field, is related to a kind of parallel antenna base of big working space variable drive
Structure, is applied to fixed, vehicular in space remote sensing, satellite communication, machine-carried type and ship borne type satellite earth antenna.
Background technology
Satellite antenna is general to be made up of antenna reflector one antenna pedestal of connection, and antenna pedestal is support and the orientation dress of antenna
Put, be used to enable the antenna to according to predetermined track or follow target to move, its structure largely affects antenna
The performance indications of whole machine.
At present, known space remote sensing uses the elevation-azimuth type antenna of classics in the world, and its zenith position is existed
One cannot " cross push up " continuous tracking " blind cone " region, the size (cone-apex angle of i.e. blind cone) in blind cone region depend on antenna with
The horizontal flying speed of distance and aircraft of aircraft, when flight chess Passing zenith tracing, antenna needs very big Azimuth, Speed, Altitude,
Infinity is reached by zenith moment Azimuth, Speed, Altitude in target, causes elevation-azimuth type antenna to there is tracking near zenith
Blind area.The remote sensing satellite antenna of traditional classical due to the presence in blind cone region cannot realize work spatial domain any attitude it is continuous with
Track, it is difficult to meet the demand that satellite-signal and data uninterruptedly continuously work.At present, more options are avoiding satellite to engineering in practice
Running track builds satellite ground station antenna by the place of antenna zenith.
Top tracking can be realized at present has Stewart antennas and different in nature antenna, wherein special-shaped seat antenna is all used
The supporting leg of special shape is realizing the upset demand of special angle, but polymorphic structure in itself because shape is special in order to ensure to make
Special material must be just used with the life-span, and makes cumbersome, efficiency is low, and fault rate is high, and because of general polymorphic structure all
It is into the frequent stress of main strut will produce deformation in use, cause flip angle by main upset pole with secondary support bar group
It is unstable easily error occur, and the antenna of special-shaped antenna holder structure is difficult to solve the problems, such as top, and Stewart antennas are general
Stewart shape parallel-connection structures are all constituted by six roots of sensation telescopic unit, Stewart antennas can solve the problems, such as top with perfection, but
Six roots of sensation telescopic unit needs co-operating in use, and its assembling is cumbersome, and response speed is slow, and cannot realize negative angle.
Parallel institution with its compact conformation, rigidity is big, bearing capacity is strong, dynamic characteristic is good the advantages of be able in numerous areas
Using, but its working space is smaller, it is difficult to meet the requirement of antenna bearingt, luffing angle, it is impossible to realize full angle or negative angle
Degree tracking, thus it is also very limited in the application of field of antenna.It is used in the secondary accurate adjustment of large aperture antenna at present.
Utility model content
The purpose of this utility model is to solve the problems, such as that what prior art was present is difficult to while solving top and negative angle is asked
Topic, there is provided a kind of without the parallel antenna seat mechanism of big working space variable drive for crossing top " blind area ", it solves satellite antenna
Passing zenith tracing problem, realizes continuous tracking of the working range internal antenna to target any attitude non-blind area.
The utility model is achieved through the following technical solutions：
There is provided a kind of big parallel antenna seat mechanism of working space variable drive, it includes the fixed platform be arrangeding in parallel
(1) and moving platform (2), described moving platform is located at fixed platform top, by three circumferentially sides between fixed platform and moving platform
Link to equally distributed movement branched chain；
Described movement branched chain includes swing arm, straight spur unit, one end and the linear drives list of described swing arm
One end of unit is hinged by sphere parafacies, and the other end of straight spur unit is drive end, the drive end of straight spur unit and
The side wall of moving platform is hinged, and the other end of swing arm is turning end, and the turning end of swing arm is hinged with the side wall of fixed platform,
The turning end of swing arm is provided with the tumbler for rotating swing arm with fixed platform joint.
Further, 120 ° are spaced between each described movement branched chain to be uniformly distributed.
Further, the drive end of described straight spur unit is that the first rotation is secondary with the moving platform place of being hinged, each
120 ° of interval is uniformly distributed between first rotation pair.
Further, the turning end of described swing arm is that the second rotation is secondary with the fixed platform place of being hinged, each second turn
120 ° of interval is uniformly distributed between dynamic pair.
Further, described straight spur unit is ball-screw, spherical guide, oil cylinder or cylinder.
Further, described tumbler is motor reducer, and reducer output shaft is connected by rotating secondary and swing arm
Connect.
Further, it is fitted with reflecting antenna on described moving platform.
The utility model has the advantage that in terms of existing technologies：
Upset and Telescopic are realized using three movement branched chains, the overall weight of antenna is light, uses three tumblers
Drive moving platform to rotate, coordinate telescopic unit to stretch out outside antenna pedestal antenna reflective face after rotation, according to stretching out angle not
Together, antenna pedestal is with negative angle alignment horizontal plane
Coordinate three tumblers using three movement branched chains, can preferentially rotate and then flexible, or it is preferential flexible right
After rotate, meet antenna more than 90 ° wide-angle pitching requirement (assuming that antenna point to along fixed platform central axis it is upward when antenna
The angle of pitch is 90 °, and it is 0 ° that antenna points to antenna elevation angle during perpendicular to fixed platform central axis), realize full angle and negative angle
Pry, it is ensured that reflecting surface tracks signal at any time, it is ensured that signal intensity.
The parallel three movement branched chains structure for using, in the absence of unlimited wide-angle Soviet Union situation, solves the mistake of satellite antenna
Top tracking problem.
In the case where with respect to the horizontal plane there is inclination angle in the mounting surface of the antennas such as ship, aircraft or automobile, antenna
Still there is hemisphere working space with respect to the horizontal plane, tracking can be met and point to requirement.
Three axis of bearing pin mutually enclose equilateral triangle and coordinate triangle or hexagonal fixed platform, it is ensured that
Each side chain stress balance, it is ensured that the life-span of movement branched chain, the tie point of 120 ° of angularly mean allocations can meet reflecting surface
Full angle is covered.
The connected mode of the side wall of another platform is connected to using the side wall by a platform, movement branched chain system is simplified
System, tumbler is set in the junction of movement branched chain and fixed platform, and the movement branched chain system after simplifying will greatly reduce appearance
Occurs the situation of dead point (stuck) between linkage.
Brief description of the drawings
A kind of big parallel antenna pedestal structural scheme of mechanism of working space variable drive of Fig. 1；
Fig. 2 is to realize bar linkage structure figure during negative angle；
Fig. 3 is cooperation ship use state figure；
Reference：Fixed platform 1, moving platform 2, swing arm 3, straight spur unit 4, spherical pair 5, second rotate secondary 13,
First rotates secondary 24
Specific embodiment
As depicted in figs. 1 and 2, there is provided a kind of big parallel antenna seat mechanism of working space variable drive, it is including parallel
The fixed platform 1 and moving platform 2 of setting, described fixed platform 1 are identical with the structure of moving platform 2, fixed platform be triangle sheet material or
Fixed platform is hexagon sheet material, and described moving platform is located at fixed platform top, by three along circle between fixed platform and moving platform
The equally distributed movement branched chain of circumferential direction links, and being spaced 120 ° between each described movement branched chain is uniformly distributed.
As shown in figure 1, each movement branched chain includes swing arm 3, straight spur unit 4, one end of described swing arm
One end with straight spur unit is mutually hinged by spherical pair 5, and the other end of straight spur unit is drive end, linear drives list
The drive end of unit is hinged with the side wall of moving platform by bearing pin, and the drive end of described straight spur unit mutually cuts with scissors with moving platform
Place is met for first rotates secondary 24,120 ° of interval is uniformly distributed between each the first rotation pair.
As shown in figure 1, the other end of swing arm is swinging end, the swinging end of swing arm passes through bearing pin with the side wall of fixed platform
Be hinged, swinging end and the fixed platform place of being hinged of described swing arm are second to rotate secondary 13, each second rotate it is secondary between
120 ° of interval is uniformly distributed, and swing arm intersects with the axis of fixed platform connecting place bearing pin, and the axis of the bearing pin encloses equilateral three
It is angular.
For guarantee equipment can freely stretch, swinging end and the fixed platform joint of swing arm are provided with for rotating swing arm
Tumbler, described tumbler is reducing motor, and the output shaft of reducing motor is connected with swing arm.
Described straight spur unit is the one kind in ball-screw, spherical guide, oil cylinder or cylinder.
There is the utility model the following two kinds control strategy can use：
The first control strategy is：Six driving inputs are divided into secondary 13, three straight line of the second rotation of two groups, i.e., three to drive
Moving cell 4 is respectively one group, carries out Time-sharing control.I.e.：During regulation antenna attitude, can first by three linear drives in each branch
Unit 4 is locked, and driving three second to rotate secondary 13 carries out antenna attitude regulation.Now the antenna seat mechanism has two rotations
With the common three degree of freedom of a movement, orientation, pitching and collection motion are capable of achieving；When antenna receives the antenna pedestal mechanism structure institute
It is limited to up to after a certain attitude limit, pins three second and rotate secondary 13, straight spur unit 4 is then unlocked, by controlling three
Straight spur unit 4 drives antenna further to move, to reach expected pose.Certainly, this strategy is corresponded to, three also can be first pinned
Individual second rotates secondary 13, drives three straight spur units 4, and three straight spur units 4 are then pinned again, drives three second
Secondary 13 are rotated, effect is consistent with the above；Antenna can be made has the big working space more than hemisphere.
Second control strategy be：According to expected antenna pose requirement, with reference to indexs such as extraneous load, velocity and accelerations
It is required that integrated planning mechanism kinematic track, simultaneously driving three second rotates pair 13 to Synchronization Control and three straight spur units 4 are real
Existing coordination, so that antenna reaches target.
It is illustrated in figure 3 a kind of application of parallel antenna seat mechanism of big working space variable drive on ship 10.Institute
A kind of fixed platform 1 of the parallel antenna seat mechanism of big working space variable drive is stated to be fixed on ship 10.Ship 10 is in the water surface
On can produce and wave, satellite antenna system is in order to meet tracking measurement requirement, it is necessary to remove compensating swinging with certain luffing angle
Angle.The utility model can compensate the swing angle of ship 10, still have phase in the case where hull occurs slightly to swing
For 0 °~90 ° of angle pitching requirement of horizontal plane.
Claims (10)
1. a kind of parallel antenna seat mechanism of big working space variable drive, it is characterised in that：Including the fixed platform be arrangeding in parallel
(1) and moving platform (2), described moving platform is located at fixed platform top, by three circumferentially sides between fixed platform and moving platform
Link to equally distributed movement branched chain；
Each movement branched chain includes swing arm (3), straight spur unit (4), one end of described swing arm and linear drives
One end of unit is mutually hinged by spherical pair (5), and the other end of straight spur unit is drive end, the driving of straight spur unit
End is hinged with the side wall of moving platform, and the other end of swing arm is swinging end, the swinging end of swing arm and the side wall phase of fixed platform
It is hinged, swinging end and the fixed platform joint of swing arm are provided with the tumbler for rotating swing arm.
2. a kind of big parallel antenna seat mechanism of working space variable drive according to claim 1, it is characterised in that：Institute
120 ° are spaced between each movement branched chain stated to be uniformly distributed.
3. a kind of big parallel antenna seat mechanism of working space variable drive according to claim 1, it is characterised in that：Institute
The drive end of the straight spur unit stated and the moving platform place of being hinged are first to rotate secondary (24), each first rotate it is secondary between
It is uniformly distributed every 120 °.
4. a kind of big parallel antenna seat mechanism of working space variable drive according to claim 1, it is characterised in that：Institute
The swinging end of the swing arm stated is that the second rotation is secondary (13) with the fixed platform place of being hinged, and 120 ° are spaced between each the second rotation pair
It is uniformly distributed.
5. a kind of big parallel antenna seat mechanism of working space variable drive according to claim 1, it is characterised in that：Institute
The straight spur unit stated is the one kind in ball-screw, spherical guide, oil cylinder or cylinder.
6. a kind of big parallel antenna seat mechanism of working space variable drive according to claim 1, it is characterised in that：Institute
The tumbler stated is reducing motor, and the output shaft of reducing motor is logical to be connected with swing arm.
7. a kind of big parallel antenna seat mechanism of working space variable drive according to claim 1, it is characterised in that：Institute
Reflecting antenna is fitted with the moving platform stated.
8. a kind of big parallel antenna seat mechanism of working space variable drive according to claim 1, it is characterised in that：Institute
The fixed platform (1) stated is identical with moving platform (2) structure, and fixed platform is triangle sheet material or fixed platform is hexagon sheet material.
9. a kind of big parallel antenna seat mechanism of working space variable drive according to claim 1, it is characterised in that：Often
Individual swing arm is all hinged by bearing pin with fixed platform.
10. a kind of big parallel antenna seat mechanism of working space variable drive according to claim 9, it is characterised in that：
The axis of each bearing pin is intersecting and encloses equilateral triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621186727.4U CN206194936U (en) | 2016-11-04 | 2016-11-04 | Big working space variably drives parallel antenna pedestal mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621186727.4U CN206194936U (en) | 2016-11-04 | 2016-11-04 | Big working space variably drives parallel antenna pedestal mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206194936U true CN206194936U (en) | 2017-05-24 |
Family
ID=58735152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621186727.4U Active CN206194936U (en) | 2016-11-04 | 2016-11-04 | Big working space variably drives parallel antenna pedestal mechanism |
Country Status (1)
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| CN (1) | CN206194936U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654510A (en) * | 2016-11-04 | 2017-05-10 | 中国电子科技集团公司第五十四研究所 | Large working space variable driving parallel antenna seat mechanism |
| CN108832253A (en) * | 2018-04-24 | 2018-11-16 | 浙江麦知网络科技有限公司 | A kind of network base station antenna easy to use |
-
2016
- 2016-11-04 CN CN201621186727.4U patent/CN206194936U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654510A (en) * | 2016-11-04 | 2017-05-10 | 中国电子科技集团公司第五十四研究所 | Large working space variable driving parallel antenna seat mechanism |
| CN106654510B (en) * | 2016-11-04 | 2024-02-20 | 中国电子科技集团公司第五十四研究所 | Large-working-space variable-drive parallel antenna pedestal mechanism |
| CN108832253A (en) * | 2018-04-24 | 2018-11-16 | 浙江麦知网络科技有限公司 | A kind of network base station antenna easy to use |
| CN108832253B (en) * | 2018-04-24 | 2020-05-26 | 上海深迅通信技术有限公司 | Convenient to use's antenna for network basic station |
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