CN106887704B - A kind of water surface floating radio telescope structure that track type gravity-center is variable - Google Patents
A kind of water surface floating radio telescope structure that track type gravity-center is variable Download PDFInfo
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- CN106887704B CN106887704B CN201710255122.9A CN201710255122A CN106887704B CN 106887704 B CN106887704 B CN 106887704B CN 201710255122 A CN201710255122 A CN 201710255122A CN 106887704 B CN106887704 B CN 106887704B
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- backrest
- primary reflection
- reflection surface
- radio telescope
- panel
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Classifications
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- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
- H01Q15/168—Mesh reflectors mounted on a non-collapsible frame
-
- 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
- H01Q19/18—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 having two or more spaced reflecting surfaces
- H01Q19/19—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The present invention relates to the water surface floating radio telescope structures that a kind of track type gravity-center can be changed, the luffing mechanism and orientation mounting in traditional complete movable radio telescope structural system are abandoned, radio telescope reflecting surface backrest is placed directly on the water surface, the movement in orientation and pitch orientation is realized by the displacement for the lumped mass being built in reflecting surface backrest.Compared with previous complete movable radio telescope structure, dead load sharp fall can save construction cost.Compared with two dot points of previous complete movable radio telescope structure reflecting surface backrest, the surface figure accuracy of reflecting surface can be increased substantially.The variable water surface floating radio telescope of track type gravity-center can be built on ocean, and can be moved to the position of needs as needed.
Description
Technical field
The invention belongs to technical field of structural engineering, are related to a kind of water surface floating radio telescope that track type gravity-center is variable
Structure.
Background technique
Radio telescope is a kind of observation device of the reception from celestial body radio signal.Due to the suction of earth atmosphere
It receives, the radio signal from celestial body only has wavelength to get to ground in the part of 1mm to 30m or so, radio astronomy
Research is also mainly carried out in this wave band.It was found from engineer's Jansky, Karl Guthe (K.G.Jansky) of AT&T Labs in 1932
Since radio radiation from glactic centre, radio astronomy is that modern astronomy research is made that tremendous contribution, such as previous generation
Four great discoveries (quasar, pulsar, interstellar molecule and cosmic microwave background radiation) recorded the sixties are all made of radio astronomy
Method is observed obtaining.
At present distribution on global radio telescope of the about 80 multi-panel bores in 25m or more, medium caliber is maximum entirely may be used
Dynamic radio telescope is respectively as follows: U.S.'s Green Bank 110m × 100m radio telescope and Germany's Bonn 100m radio is looked in the distance
Mirror.Another rope-mesh type radio telescope more attracted attention is U.S. A Leixibo 305m radio telescope, it is once by scientist
It is chosen as first of 20th century mankind's ten major projects.And in Guizhou Province, China Pingtang County Karst depression, bore is the spherical crown shape of 500m
Big science engineering of the radio telescope FAST as China is the single port diameter radio telescope of most power in the world today,
Sensitivity will improve 2.25 times than U.S.'s A Leixibo radio telescope, and prediction was kept advanced in the worldly at following 20~30 years
Position.Although A Leixibo radio telescope and FAST bore are huge, reflecting surface not can be rotated, and observation scope is by the very day of one's doom
System, in addition, the two radio telescopes need special geographical environment, it is often not reproducible.Therefore, heavy caliber, high-precision
Complete movable radio telescope is still that current radio astronomy educational circles is primarily upon direction.
Although previous complete movable radio telescope realizes heavy caliber and high-precision purpose to a certain extent, deposit
In following problems:
(1) since radio telescope structural style is excessively huge, reflector precision is not able to satisfy under dead load effect
Design requirement has been difficult to break through 110m bore using existing complete movable radio telescope structural system；
(2) to pursue heavy caliber and high-precision, though design and optimization by science, radio telescope structure division is still
Consumptive material is huge, it is difficult to which batch is built；
(3) have radio telescope and be built in land, day area corresponding to observation land is only capable of, for extensive ocean institute
Corresponding day area, there are observation blind areas.
Therefore, it is necessary to a kind of radio telescope structure of new model be invented, to move towards radio telescope from land
Ocean reduces construction cost, and breaks through 110m bore.
Summary of the invention
Technical problems to be solved
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of water surface floating radio that track type gravity-center is variable
Telescope configuration overcomes the shortcomings of existing radio telescope structural system.
Technical solution
A kind of water surface floating radio telescope structure that track type gravity-center is variable, it is characterised in that including primary reflection surface backrest
1, multiple primary reflection surface panels 2, multiple actuators 3, primary reflection surface coverboard 4, arc track 5, bogie 6, centerbody 7, feed
8, support leg 9, subreflector backrest 10 and subreflector panel 11；The upper chord node of primary reflection surface backrest 1 passes through actuator 3 and master
Reflection surface panel 2 connects, and the lower-chord panel point of primary reflection surface backrest 1 is connect with primary reflection surface coverboard 4；2 arc tracks 5 hang down mutually
Directly, non-intersecting to be built in primary reflection surface backrest, 2 bogies are located in 2 arc tracks, and travel on respective track respectively
In；Centerbody 7 is located at primary reflection surface backrest center, and feed 8 is located on centerbody；49 upper ends of support leg and subreflector backrest
10 are connected, and lower end is connected through primary reflection surface panel with 2 arc tracks, subreflector panel 11 and 10 phase of subreflector backrest
Even；The multiple primary reflection surface panel 2 is located on the same paraboloid of revolution.
The primary reflection surface backrest uses spatial mesh structure form, and upper chord node is located on the same paraboloid of revolution,
Lower-chord panel point is located on the same spherical surface.
The primary reflection surface coverboard is a spherical surface, is connected directly with primary reflection surface backrest lower-chord panel point.
The arc track is box-type section.
The bogie is the telecar for having certain counterweight, can receive instruction.
The centerbody is a tube-shaped structure, and 2 arc tracks extend there through respectively, centerbody and arc track, master
Reflecting surface backrest, primary reflection surface coverboard are connected.
The support leg is cancelled structure.
The subreflector backrest is spatial mesh structure, and the node being connected with subreflector panel is located at the same rotation
On hyperboloid.
The hyperboloid of revolution that the subreflector panel is made of several pieces of small panels.
Beneficial effect
A kind of variable water surface floating radio telescope structure of track type gravity-center proposed by the present invention has been abandoned and traditional entirely may be used
Luffing mechanism and orientation mounting in dynamic radio telescope structural system, are placed directly within the water surface for radio telescope reflecting surface backrest
On, the movement in orientation and pitch orientation is realized by the displacement for the lumped mass being built in reflecting surface backrest.
Due to using above-mentioned technology, be allowed to have as follows compared with existing complete movable radio telescope structure has the present invention
Beneficial effect:
1. orientation mounting and luffing mechanism in the previous complete movable radio telescope structure of present invention nothing, but directly will be anti-
The face back frame structure of penetrating is placed on the water surface, and the buoyancy of water is born by primary reflection surface coverboard, orthogonal at 2 by 2 bogies
Arc track in cooperation it is mobile change integrally-built center of gravity, and then realize fortune of the overall structure in orientation and pitching
It is dynamic.Therefore, compared with previous complete movable radio telescope structure, dead load sharp fall can save construction cost.
2. the variable water surface floating radio telescope structure of track type gravity-center is that water surface buoyancy supports, buoyancy with water
On the spherical surface of contact, compared with two dot points of previous complete movable radio telescope structure reflecting surface backrest, the face shape of reflecting surface
Precision can increase substantially.
3. existing radio telescope is built in land, it is only capable of day area corresponding to observation land, for extensive ocean institute
Corresponding day area, there are observation blind areas.The variable water surface floating radio telescope of track type gravity-center can be built on ocean, and
It can be moved to the position of needs as needed.
Detailed description of the invention
Fig. 1 is the sectional view for the water surface floating radio telescope structure that track type gravity-center can be changed；
Fig. 2 is the top view for the water surface floating radio telescope structure that track type gravity-center can be changed；
Fig. 3 is the arc track for the water surface floating radio telescope structure that track type gravity-center can be changed；
Fig. 4 is the plan of transposition for the water surface floating radio telescope structure that track type gravity-center can be changed；
In figure: 1- primary reflection surface backrest, 2- primary reflection surface panel, 3- actuator, 4- primary reflection surface coverboard, 5- curved track
Road, 6- bogie, 7- centerbody, 8- feed, 9- support leg, 10- subreflector backrest, 11- subreflector panel, the 12- water surface.
Specific embodiment
Now in conjunction with embodiment, attached drawing, the invention will be further described:
The following technical solution is employed by the present invention: the variable water surface floating radio telescope structure floats of track type gravity-center in
On the water surface, including primary reflection surface backrest 1, primary reflection surface panel 2, actuator 3, primary reflection surface coverboard 4, arc track 5, bogie
6, centerbody 7, feed 8, support leg 9, subreflector backrest 10, subreflector panel 11.The upper chord node of primary reflection surface backrest is logical
It crosses actuator to connect with primary reflection surface panel, the lower-chord panel point of primary reflection surface backrest is directly connect with primary reflection surface coverboard, main anti-
The buoyancy that face-piece plate directly bears water is penetrated, 2 arc tracks are orthogonal and are built in primary reflection surface backrest, 2 bogies
It is travelled in 2 arc tracks respectively, centerbody is located at primary reflection surface backrest center, and feed is located on centerbody, 4 support legs
Upper end is connected with subreflector backrest, and 4 support leg lower ends are connected through primary reflection surface panel with 2 arc tracks, subreflector
It is connected with subreflector backrest.
Wherein, the primary reflection surface backrest uses spatial mesh structure form, and upper chord node is located at the same rotary parabolic
On face, lower-chord panel point is located on the same spherical surface.
The primary reflection surface panel is the minimum unit for constituting primary reflection surface, and all primary reflection surface panels are located at the same rotation
Turn on paraboloid.
The actuator both ends are connected with primary reflection surface backrest and primary reflection surface panel respectively, can extend shortening at any time, use
It is deformed caused by compensation primary reflection surface panel is due to Structure Attitude adjustment.
The primary reflection surface coverboard be a spherical surface, be located at primary reflection surface backrest under, and with chord joint under primary reflection surface backrest
Point is connected directly, and directly bears the buoyancy of water.
The arc track is box-type section, is bogie running rail, 2 arc tracks are at primary reflection surface backrest center
Position is staggered up and down, to guarantee that 2 bogies can pass through primary reflection surface backrest center simultaneously.
The bogie is the telecar with certain counterweight, and receivable instruction is traveled freely in arc track, passes through 2
Integrally-built center of gravity can be changed in the cooperation movement of loading gage loaded vehicle, to control fortune of the overall structure in orientation and pitch orientation
It is dynamic.
The centerbody is a tube-shaped structure, and 2 arc tracks extend there through respectively, centerbody and arc track, master
Reflecting surface backrest, primary reflection surface coverboard are connected.
The feed is located on centerbody, for receiving radio signal.
The support leg is cancelled structure, is used to support subreflector backrest.
The subreflector backrest is spatial mesh structure, and the node being connected with subreflector panel is located at the same rotation
On hyperboloid；
The hyperboloid of revolution that the subreflector panel is made of several pieces of small panels.
The present invention uses following implementer's case, and the variable water surface floating radio telescope structure of track type gravity-center is cutd open
Face figure, top view, arc track and plan of transposition are shown in Fig. 1-4, including primary reflection surface backrest 1, primary reflection surface panel 2, actuator 3,
Primary reflection surface coverboard 4, arc track 5, bogie 6, centerbody 7, feed 8, support leg 9, subreflector backrest 10 and subreflector
The specific location of panel 11, every part is shown in Fig. 1.The invention will be further described with example with reference to the accompanying drawing.
Specific embodiment:
Radio wave from celestial body is connect after 11 liang of secondary reflections of primary reflection surface panel 2 and subreflector panel by feed 8
It receives, due to the influence of earth rotation, observes celestial body for long time-tracking and need radio telescope structure that can adjust primary reflection surface at any time
Direction, the paraboloid of revolution that primary reflection surface is made of several pieces of primary reflection surface panels 2 (see Fig. 2).
The present invention realizes the adjustment of Structure Attitude, specific gravity motion side by way of changing overall structure center of gravity
Formula is bogie rail type mobile scheme, the traveling in arc track 5 (see Fig. 3) of bogie 6, when a bogie 6 is in arc
It is static in track 5, when another bogie 6 moves in another arc track 5, overall structure can be adjusted in bogie 6
The posture of driving direction, integrally-built gravity motion direction is identical as the moving direction of bogie 6, when 2 bogies are in arc
When cooperating mobile in shape track 5, movement (see Fig. 4) of the overall structure in orientation and pitch orientation can be realized, reach to sky
Between target following observe purpose.To enable 2 bogies also cross reflecting surface center, 2 arc tracks 5 are in reflecting surface
Heart intersection is staggered up and down, and 2 arc tracks 5 are connected into an entirety by centerbody 7.
It is connected with actuator 3 between the upper chord node of each of primary reflection surface backrest 1 and primary reflection surface panel 2, in entirety
During structure position changing, the deformation that actuator 3 can stretch with collocation structure under the effect of gravity at any time makes the essence of primary reflection surface
Degree is maintained in the range of demand.
Claims (9)
1. a kind of variable water surface floating radio telescope structure of track type gravity-center, it is characterised in that including primary reflection surface backrest
(1), multiple primary reflection surface panels (2), multiple actuators (3), primary reflection surface coverboard (4), arc track (5), bogie (6),
Centerbody (7), feed (8), support leg (9), subreflector backrest (10) and subreflector panel (11)；Primary reflection surface backrest (1)
Upper chord node connect with primary reflection surface panel (2) by actuator (3), the lower-chord panel point of primary reflection surface backrest (1) with lead instead
Penetrate face-piece plate (4) connection；2 arc tracks (5) are orthogonal, non-intersecting to be built in primary reflection surface backrest, 2 load-carrying parking stalls
In 2 arc tracks, and travelled in respective track respectively；Centerbody (7) is located at primary reflection surface backrest center, feed (8)
On centerbody；4 support leg (9) upper ends are connected with subreflector backrest (10), and lower end penetrates primary reflection surface panel and 2
Arc track is connected, and subreflector panel (11) is connected with subreflector backrest (10)；The multiple primary reflection surface panel (2) position
In on the same paraboloid of revolution.
2. the variable water surface floating radio telescope structure of track type gravity-center according to claim 1, it is characterised in that: described
Primary reflection surface backrest uses spatial mesh structure form, and upper chord node is located on the same paraboloid of revolution, and lower-chord panel point is located at
On the same spherical surface.
3. the variable water surface floating radio telescope structure of track type gravity-center according to claim 1, it is characterised in that: described
Primary reflection surface coverboard is a spherical surface, is connected directly with primary reflection surface backrest lower-chord panel point.
4. the variable water surface floating radio telescope structure of track type gravity-center according to claim 1, it is characterised in that: described
Arc track is box-type section.
5. the variable water surface floating radio telescope structure of track type gravity-center according to claim 1, it is characterised in that: described
Bogie is the telecar for having certain counterweight, can receive instruction.
6. the variable water surface floating radio telescope structure of track type gravity-center according to claim 1, it is characterised in that: described
Centerbody is a tube-shaped structure, and 2 arc tracks extend there through respectively, centerbody and arc track, primary reflection surface backrest, master
Reflecting surface coverboard is connected.
7. the variable water surface floating radio telescope structure of track type gravity-center according to claim 1, it is characterised in that: described
Support leg is cancelled structure.
8. the variable water surface floating radio telescope structure of track type gravity-center according to claim 1, it is characterised in that: described
Subreflector backrest is spatial mesh structure, and the node being connected with subreflector panel is located in the same hyperboloid of revolution.
9. the variable water surface floating radio telescope structure of track type gravity-center according to claim 1, it is characterised in that: described
The hyperboloid of revolution that subreflector panel is made of several pieces of small panels.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710255122.9A CN106887704B (en) | 2017-04-19 | 2017-04-19 | A kind of water surface floating radio telescope structure that track type gravity-center is variable |
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| CN201710255122.9A CN106887704B (en) | 2017-04-19 | 2017-04-19 | A kind of water surface floating radio telescope structure that track type gravity-center is variable |
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| CN106887704A CN106887704A (en) | 2017-06-23 |
| CN106887704B true CN106887704B (en) | 2019-08-09 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516768A (en) * | 2017-07-24 | 2017-12-26 | 西北工业大学 | A kind of Moving water surface floating radio telescope based on water flowing |
| CN109244678B (en) * | 2018-09-27 | 2023-10-17 | 中国科学院国家天文台 | Rope system foundation telescope reflecting surface structure |
| CN109301439B (en) * | 2018-10-23 | 2024-03-15 | 中国科学院国家天文台 | Main reflecting surface quasi-rigid supporting system of giant fully-movable telescope |
| CN109768364B (en) * | 2018-12-18 | 2021-07-13 | 黑龙江职业学院(黑龙江省经济管理干部学院) | Antenna boom for communication engineering |
| CN113536649B (en) * | 2021-09-09 | 2021-11-19 | 东方法马通核泵有限责任公司 | Simplified model construction method and beam unit model construction method of nuclear power main pump structure |
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| KR101608682B1 (en) * | 2015-04-15 | 2016-04-04 | 한국 천문 연구원 | Waterproof method for vertex window of radio telescope reflector |
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| CN1341536A (en) * | 2000-09-07 | 2002-03-27 | 黄上立 | Spin-stabilized film reflector and its application in space |
| CN2806083Y (en) * | 2005-06-21 | 2006-08-16 | 北京航空航天大学 | T shape spherical detection robot |
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