CN110380214A - A kind of dynamic fixed platform is more bar six degree of freedom minor faces adjustment device of plane girder - Google Patents
A kind of dynamic fixed platform is more bar six degree of freedom minor faces adjustment device of plane girder Download PDFInfo
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- CN110380214A CN110380214A CN201910682951.4A CN201910682951A CN110380214A CN 110380214 A CN110380214 A CN 110380214A CN 201910682951 A CN201910682951 A CN 201910682951A CN 110380214 A CN110380214 A CN 110380214A
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- 229910000831 Steel Inorganic materials 0.000 claims description 5
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- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
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- 230000001105 regulatory effect Effects 0.000 description 3
- 241001347978 Major minor Species 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 241001149930 Protura <class> Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/08—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
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- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses more bar six degree of freedom minor faces that a kind of dynamic fixed platform is plane girder to adjust device, it is related to the minor face pose adjustment technology of dual reflector antenna in the fields such as communication, observing and controlling and radio astronomy.It is intended to provide a kind of minor face adjustment device with six degree of freedom, high rigidity and high reliability.It includes moving platform, moving platform, main modulation bar, auxiliary adjustment bar, moving platform ball node and fixed platform ball node etc..Moving platform and fixed platform are truss structural, realize and adjust to the pose of moving platform by main modulation bar and auxiliary adjustment bar.More bar adjustment device overall structures are made of multiple triangular elements, have stable mechanical characteristic, bearing capacity is strong.The present invention can not only realize the six-freedom degree pose adjustment of minor face, and can be improved the overall stiffness of minor face system, reduce overall weight, while being able to ascend mounting and adjusting efficiency and reducing manufacturing cost.
Description
Technical field
The present invention relates to double offset reflector antenna technical fields, particularly relate to a kind of more bar six degree of freedom minor face adjustment dresses
It sets, can be used as the minor face pose adjustment device of dual reflector antenna.
Background technique
Reflector antenna has the characteristics that high-gain, low sidelobe, is widely used in the neck such as communication, observing and controlling and radio astronomy
In domain.Dual reflector antenna is compared with single reflection surface antenna, with designability is strong, longitudinal size is short and receiving device space is big
The advantages that, therefore it is more important than the status of single reflection surface antenna.
Dual reflector antenna is made of interarea, minor face and feed three parts, and wherein minor face comes from interarea or feedback for reflecting
The electromagnetic wave in source, performance directly affect the global index of antenna system.For large and medium-sized bore dual reflector antenna,
In order to eliminate manufacture, installation and measurement equal error, need to carry out minor face the multidimensional adjustment of position and posture, make it with interarea and
Feed can be realized good matching.
In traditional minor face method of adjustment, four studs are arranged in minor face back, by adjusting screwing for stud
Length realizes the movement of minor face.This method has the following problems: 1. adjusting dimension is few, can only meet the tune in some direction
It is whole, it cannot achieve the demand of total space six degree of freedom；2. adjustment process easily causes influencing each other for different dimensions, such as works as and adjust certain
When dimension, influences whether other adjusted good dimensions, lead to the problem of position and do not restrain；3. being suitable only for small-bore low frequency
The position degrees occasions of less demanding such as section.
One kind is disclosed in the Chinese patent " large-scale antenna minor face adjustment mechanism " that notification number is CN202275925U to have
The minor face adjustment mechanism of intermediate support and adjustment screw rod；Chinese patent " the minor face configuration space of Publication No. CN105281036A
Sextuple regulating mechanism " in disclose a kind of combination using multi-layer board and adjustment bolt and realize the multidimensional of minor face and adjust；
It is disclosed in the Chinese patent " antenna subreflector adjusts device " that notification number is CN206250370U a kind of using multilayer bracket
The adjustment of subreflector is realized with the mode for adjusting stud.Although above-mentioned several patents can make up for it some traditional use spiral shells
Column adjusts the defect of minor face method, but has the disadvantage that
(1) adjustment mechanism weight weight.Above-mentioned several minor face methods of adjustment have been all made of tandem type structure type, i.e., how many is a
It is mechanical cumulative that freedom degree just needs how many layers of kinematic pair to carry out, and produces the disadvantage that volume is big and weight is heavy.
(2) Adjustment precision is low.Using series connection adjustment mechanism, it is easy to produce interfering with each other for different dimensions, especially for
The axially different rotation center of the adjustment of corner, minor face is difficult to control, and causes Adjustment precision not high, regulated efficiency is lower.
(3) reliability is low.For serial mechanism, each level corresponds to one degree of freedom, when certain layer of mechanism malfunction
When, it will lead to entire adjustment thrashing, therefore above method reliability is lower.
In recent years, with the raising of computing capability, parallel institution is had application in the minor face adjustment of multiple reflector antennas
It goes.Notification number is public in a kind of Chinese patent " antenna subreflector system containing fixed adjustment mechanisms " of CN202712431U
A kind of device using classical Stewart parallel institution adjustment subreflector is opened；In Publication No. CN105226370A
A kind of six bar parallel institutions of use are disclosed in state's patent " 6/6-UPU type parallel antenna structure system " as antenna pedestal
Frame realizes Passing zenith tracing function；A kind of Chinese patent " parallel six degrees of freedom redundancy drive of Publication No. CN106450653A
Dynamic antenna structure system " in disclose it is a kind of be combined by six bar parallel institutions and cone, realize the negative angle of antenna
The elevation angle.Above three patent can be realized the six degree of freedom adjustment to antenna or minor face, but for such as double offset reflector antenna
Minor face adjustment application, there are still following deficiencies:
(1) local stiffness is low.Conventional parallel mechanism is generally made of six drive rods, moving platform and fixed platform, and moving platform passes through
Three supporting points are connected with drive rod.It, may be because of as the moving platform of minor face installation foundation when minor face bore is larger
Supporting point is very few to cause link position rigidity low, to reduce the surface accuracy of minor face.
(2) designability is poor.Conventional parallel mechanism is unable to each rod piece of arbitrary disposition to meet the needs of solution room
Position distribution particularly for double offset antenna, when needing fixed platform to be located at outside minor face bore, can design band to structure
Carry out very big difficulty.
(3) there is no Redundancy Design.Six bar parallel institutions use six sets drive systems, when wherein have one driving or rod piece production
When raw failure, the system of will lead to be can not work normally, or even can have an impact to equipment safety.
The content of invention
In view of this, the present invention provides a kind of more bar six degree of freedom minor face adjustment devices, the six degree of freedom position of minor face can be realized
Appearance adjustment, is reduced between the obstruction of the Electromagnetic Wave Propagation major-minor face, and can be improved the overall stiffness of minor face system, is reduced whole
Weight promotes mounting and adjusting efficiency and reduces manufacturing cost, with light-weight, rigidity is big, high reliablity and designability are strong
The characteristics of.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of dynamic fixed platform is more bar six degree of freedom minor faces adjustment device of plane girder comprising moving platform plane girder knot
Structure, fixed platform truss structural, N root main modulation bar and 2N root auxiliary adjustment bar, N >=4；The fixed platform truss structural
The side the N shape structure formed to be joined end to end by N root fixed platform bar passes through a fixed platform between two adjacent fixed platform bars
Ball node connection；The moving platform truss structural is the side the 2N shape structure for being joined end to end by 2N root moving platform bar and being formed,
Pass through a moving platform ball node connection between two adjacent moving platform bars；It is non-conterminous two-by-two in 2N moving platform ball node
N number of moving platform ball node and the N number of fixed platform ball node correspond, a mutual corresponding moving platform ball node and one
By a main modulation bar connection between fixed platform ball node, each fixed platform ball node also passes through two auxiliary adjustment bars and is somebody's turn to do
Two ortho position moving platform ball nodes of moving platform ball node corresponding to fixed platform ball node connect one by one；The main modulation bar and auxiliary
It helps the both ends of adjustment bar to all have spherical hinge, all has screw thread tune long structure in the middle part of bar；The moving platform truss structural
Angle between place plane and the place plane of fixed platform truss structural is 0 °~30 °.
Specifically, the moving platform bar and fixed platform bar are steel round tube or tube and pipe of aluminium alloy, diameter is 30~
120mm, length are 500~4000mm.
Specifically, the spherical hinge is ball bearing.
It is threadedly coupled specifically, the moving platform ball node and fixed platform ball node pass through threaded hole with each respective rods.
It has the following beneficial effects: compared with the background technology, the present invention
(1) method of adjustment of the invention uses more bar parallel forms, realizes the continuously adjustable and each of six-freedom degree
It is mutually indepedent between adjustment dimension, be independent of each other, therefore Adjustment precision and regulated efficiency are high.
(2) overall structure form of the invention is made of multiple triangular elements, has stable mechanical property, Neng Gouyou
Effect resists weight deformation of the antenna in pitching movement, improves the dynamic property of antenna system, has rigidity big, light-weight
Advantage.
(3) parallel-connection structure of the present invention is Redundancy Design, and adjustment rod member is more than six traditional rod structures, when individual
When rod piece breaks down or fails, adjustment device can still work normally and be rock-steady structure, will not have an impact to antenna system,
Therefore has the characteristics that high reliablity.
(4) moving platform in the present invention and fixed platform are truss structure form, can according to the minor face of different structure scale into
Row design adjustment, with the strong advantage of flexible form, designability.
(5) each connecting node in present invention adjustment device, is all made of bolted spherical node through numerical control machine-shaping, assembled
Overall structure position precision afterwards is high, interchangeability is good, manufactures especially suitable for producing in enormous quantities.
(6) present invention in composition adjustment device all rod pieces be all made of bolt spherical structure interconnection, after decomposition can
Delivery unit is adapted to highway transportation and TEU (Twenty-foot Equivalent Unit).
(7) present invention is installed between antenna minor face and interarea, in general can be directly installed on minor face support construction
On, the center of the adjustment device is unseparated perforation region, it is possible to reduce to the resistance between the Electromagnetic Wave Propagation major-minor face
Hinder, improves the overall efficiency of antenna.
In short, present inventive concept is ingenious, and clear thinking, it is easy to accomplish, both solved traditional serial mechanism adjustment effect
The problem of difference, weight weight, and the reliability and design flexibility of parallel institution are improved, it is change important to one kind of the prior art
Into.
Detailed description of the invention
Fig. 1 is the general structure schematic diagram of minor face adjustment device in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of fixed platform bar in Fig. 1；
Fig. 3 is the structural schematic diagram of moving platform bar in Fig. 1；
Fig. 4 is the attachment structure schematic diagram at Fig. 1 interior joint；
Fig. 5 is the structural schematic diagram of main modulation bar in Fig. 1；
Fig. 6 is the structural schematic diagram of ball node in Fig. 1.
The meaning of each label is as follows in figure: plane A where moving platform, plane B where fixed platform, between plane A and plane B
Angle α, moving platform 1, moving platform bar 1-1, moving platform bar 1-2, moving platform bar 1-3, moving platform bar 1-4, moving platform bar 1-5,
Moving platform bar 1-6, moving platform bar 1-7, moving platform bar 1-8, moving platform bar 1-9, moving platform bar 1-10, fixed platform 2, fixed platform bar
2-1, fixed platform bar 2-2, fixed platform bar 2-3, fixed platform bar 2-4, fixed platform bar 2-5, main modulation bar 3, auxiliary adjustment bar 4 move
Platform ball node 5, fixed platform ball node 6.
Specific embodiment
The invention will be further described with specific embodiment with reference to the accompanying drawing.
A kind of dynamic fixed platform is more bar six degree of freedom minor faces adjustment device of plane girder comprising moving platform plane girder
Structure, fixed platform truss structural, N root main modulation bar and 2N root auxiliary adjustment bar, N >=4；The fixed platform plane girder knot
Structure is the side the N shape structure for being joined end to end by N root fixed platform bar and being formed, and is allocated between two adjacent fixed platform bars by one
The connection of billiard ball node；The moving platform truss structural is the side the 2N shape knot for being joined end to end by 2N root moving platform bar and being formed
Structure passes through a moving platform ball node connection between two adjacent moving platform bars；Two neither phases in 2N moving platform ball node
Adjacent N number of moving platform ball node and N number of fixed platform ball node correspond, a mutual corresponding moving platform ball node and
By a main modulation bar connection between one fixed platform ball node, each fixed platform ball node also passes through two auxiliary adjustment bars
It is connect one by one with two ortho position moving platform ball nodes of moving platform ball node corresponding to the fixed platform ball node；The main modulation bar
Spherical hinge is all had with the both ends of auxiliary adjustment bar, all has screw thread tune long structure in the middle part of bar；The moving platform plane girder knot
Angle between the place plane of structure and the place plane of fixed platform truss structural is 0 °~30 °.
Specifically, the moving platform bar and fixed platform bar are steel round tube or tube and pipe of aluminium alloy, diameter is 30~
120mm, length are 500~4000mm.
Specifically, the spherical hinge is ball bearing.
It is threadedly coupled specifically, the moving platform ball node and fixed platform ball node pass through threaded hole with each respective rods.
Below by dual reflector antenna medium caliber be 5 meters minor face adjust device for minor face of the present invention adjust device into
Row further description.
As shown in Figure 1, the adjustment device includes: moving platform 1, fixed platform 2, main modulation bar 3, auxiliary adjustment bar 4, moving platform
Ball node 5 and fixed platform ball node 6.
Adjustment device is located at minor face bore direction and does not block to minor face generation；Moving platform 1 is connected with minor face backrest, fixed
Platform 2 is located at outside minor face bore.
Angle α between 2 place plane B of 1 place plane A of moving platform and fixed platform is 0 °~30 °.
Particularly, the angle α in this example between plane A and plane B is 15 °.
Fixed platform 2 is truss structural, the symmetrical side the N shape of shape, wherein N is natural number, and N >=4, by N
A fixed platform bar 2-1~2-N composition, fixed platform bar 2-1~2-N pass through fixed platform ball node 6 between any two and are connected.
The shape of fixed platform 2 is pentagon in this example, by fixed platform bar 2-1, fixed platform bar 2-2, fixed platform bar 2-3, is determined
Platform bar 2-4 and fixed platform bar 2-5 composition.
Moving platform 1 is truss structural, the symmetrical side the 2N shape of shape, by 2N moving platform bar 1-1~1-2N
Composition, and be connected between any two by moving platform ball node 5.
1 shape of moving platform is decagon in this example, by moving platform bar 1-1, moving platform bar 1-2, moving platform bar 1-3, moves and puts down
Platform bar 1-4, moving platform bar 1-5, moving platform bar 1-6, moving platform bar 1-7, moving platform bar 1-8, moving platform bar 1-9 and moving platform bar
1-10 composition.
At least one node is corresponding with moving platform ball node 5 in N number of fixed platform ball node 6.
Five nodes of fixed platform ball node 6 are corresponding with moving platform ball node 5 in this example.
Main modulation bar 3 is made of N number of rod piece, and both ends are connected with moving platform ball node 5 and fixed platform ball node 6 respectively,
Quantity is N number of.
The quantity of main modulation bar 3 is 5 in this example.
Auxiliary adjustment 4 both ends of bar are connected with moving platform ball node 5 and fixed platform ball node 6 respectively, and quantity is 2N.
The quantity of auxiliary adjustment bar 4 is 10 in this example.
Main modulation bar 3 and auxiliary adjustment 4 both ends of bar include spherical hinge, and centre is length-adjustable helicitic texture.
Moving platform bar 1-1~1-2N, fixed platform bar 2-1~2-N, main modulation bar 3 and auxiliary adjustment bar 4 form multiple triangles
The net surface structure of shape dead zone.
The net surface structure that adjustment device in this example is made of 15 triangle dead zones.
Moving platform bar 1-1~1-10 and fixed platform bar 2-1~2-5 be steel round tube or tube and pipe of aluminium alloy, diameter be 30~
120mm, length are 500~4000mm.
In this example moving platform bar 1-1~1-10 and fixed platform bar 2-1~2-5 use steel round tube, diameter be 40~
100mm, length are 500~3300mm.
As shown in Figure 2 and Figure 3, moving platform bar 1-1~1-10 and fixed platform bar 2-1~2-5 include round tube, it is conehead, high-strength
Spend screw bolt and nut.
As shown in figure 4, moving platform bar 1-1~1-10 and fixed platform bar 2-1~2-5 and corresponding moving platform ball node 5 or
The type of attachment of fixed platform ball node 6 is all made of bolt spherical structure.
The both ends spherical hinge of main modulation bar 3 and auxiliary adjustment bar 4 is ball bearing.
As shown in figure 5, main modulation bar 3 and auxiliary adjustment bar 4 intermediate thread structure be left and right rotation direction be applied in combination can
Adjust length fashion.
As shown in fig. 6, moving platform ball node 5 and fixed platform ball node 6 are spherical hollow structure, divide on hemisphere face
It is furnished with respective screw hole, using numerically-controlled machine tool machine-shaping.
In use, this adjustment device is installed between antenna minor face and interarea, pair in general can be directly installed on
In the support construction of face, that is, fixed platform part is fixed with minor face support construction, and antenna minor face is installed at moving platform.In this way, passing through
The body of rod between fixed platform and moving platform is adjusted, the adjustment to minor face can be realized.
In short, present inventive concept is ingenious, and clear thinking, it is easy to accomplish, both solved traditional serial mechanism adjustment effect
The problem of difference, weight weight, and the reliability and design flexibility of parallel institution are improved, it is change important to one kind of the prior art
Into.
The above is only highly preferred embodiment of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification, change and equivalent structure to the above embodiments change, and still fall within skill of the present invention
In the protection scope of art scheme.
Claims (4)
1. more bar six degree of freedom minor faces that a kind of dynamic fixed platform is plane girder adjust device, which is characterized in that including moving platform
Truss structural, fixed platform truss structural, N root main modulation bar and 2N root auxiliary adjustment bar, N >=4；The fixed platform is flat
Face truss structure is the side the N shape structure for being joined end to end by N root fixed platform bar and being formed, and is passed through between two adjacent fixed platform bars
One fixed platform ball node connection；The moving platform truss structural is the 2N for being joined end to end by 2N root moving platform bar and being formed
Side shape structure passes through a moving platform ball node connection between two adjacent moving platform bars；Two in 2N moving platform ball node
Two non-conterminous N number of moving platform ball nodes and N number of fixed platform ball node correspond, a mutual corresponding moving platform ball
By a main modulation bar connection between node and a fixed platform ball node, each fixed platform ball node also passes through two auxiliary
Adjustment bar is connect one by one with two ortho position moving platform ball nodes of moving platform ball node corresponding to the fixed platform ball node；The master
The both ends of adjustment bar and auxiliary adjustment bar all have spherical hinge, all have screw thread tune long structure in the middle part of bar；The moving platform plane
Angle between the place plane of truss structure and the place plane of fixed platform truss structural is 0 °~30 °.
2. more bar six degree of freedom minor faces according to claim 1 adjust device, which is characterized in that the moving platform bar and fixed
Platform bar is steel round tube or tube and pipe of aluminium alloy, and diameter is 30~120mm, and length is 500~4000mm.
3. more bar six degree of freedom minor faces according to claim 1 adjust device, which is characterized in that the spherical hinge is ball axis
It holds.
4. more bar six degree of freedom minor faces according to claim 1 adjust device, which is characterized in that the moving platform ball node
Pass through threaded hole with fixed platform ball node to be threadedly coupled with each respective rods.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910682951.4A CN110380214A (en) | 2019-07-26 | 2019-07-26 | A kind of dynamic fixed platform is more bar six degree of freedom minor faces adjustment device of plane girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910682951.4A CN110380214A (en) | 2019-07-26 | 2019-07-26 | A kind of dynamic fixed platform is more bar six degree of freedom minor faces adjustment device of plane girder |
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| CN110380214A true CN110380214A (en) | 2019-10-25 |
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|---|---|---|---|
| CN201910682951.4A Pending CN110380214A (en) | 2019-07-26 | 2019-07-26 | A kind of dynamic fixed platform is more bar six degree of freedom minor faces adjustment device of plane girder |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10135729A (en) * | 1996-10-24 | 1998-05-22 | Nippon Telegr & Teleph Corp <Ntt> | Cable film surface support method and device |
| CN204834875U (en) * | 2015-08-06 | 2015-12-02 | 中国电子科技集团公司第五十四研究所 | Vice face position appearance adjusting device based on stewart formula six -degree -of -freedom parallel mechanism |
| CN106450653A (en) * | 2016-09-08 | 2017-02-22 | 中国电子科技集团公司第五十四研究所 | Parallel type six-freedom-degree redundant driving antenna structural system |
| CN109301452A (en) * | 2018-09-19 | 2019-02-01 | 中国科学院遥感与数字地球研究所 | S/X/Ka triaxial antennas |
| CN209913042U (en) * | 2019-07-26 | 2020-01-07 | 中国电子科技集团公司第五十四研究所 | Multi-rod six-degree-of-freedom auxiliary surface adjusting device with movable platform and fixed platform as planar truss |
-
2019
- 2019-07-26 CN CN201910682951.4A patent/CN110380214A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10135729A (en) * | 1996-10-24 | 1998-05-22 | Nippon Telegr & Teleph Corp <Ntt> | Cable film surface support method and device |
| CN204834875U (en) * | 2015-08-06 | 2015-12-02 | 中国电子科技集团公司第五十四研究所 | Vice face position appearance adjusting device based on stewart formula six -degree -of -freedom parallel mechanism |
| CN106450653A (en) * | 2016-09-08 | 2017-02-22 | 中国电子科技集团公司第五十四研究所 | Parallel type six-freedom-degree redundant driving antenna structural system |
| CN109301452A (en) * | 2018-09-19 | 2019-02-01 | 中国科学院遥感与数字地球研究所 | S/X/Ka triaxial antennas |
| CN209913042U (en) * | 2019-07-26 | 2020-01-07 | 中国电子科技集团公司第五十四研究所 | Multi-rod six-degree-of-freedom auxiliary surface adjusting device with movable platform and fixed platform as planar truss |
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