CN107799904A - A kind of FAST radio telescopes central area reflecting surface - Google Patents

A kind of FAST radio telescopes central area reflecting surface Download PDF

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Publication number
CN107799904A
CN107799904A CN201710889829.5A CN201710889829A CN107799904A CN 107799904 A CN107799904 A CN 107799904A CN 201710889829 A CN201710889829 A CN 201710889829A CN 107799904 A CN107799904 A CN 107799904A
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CN
China
Prior art keywords
reflector panel
servo
node plate
main rope
reflector
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CN201710889829.5A
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Chinese (zh)
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CN107799904B (en
Inventor
曹江涛
郑元鹏
张万才
王大为
李增科
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CETC 54 Research Institute
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CETC 54 Research Institute
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Priority to CN201710889829.5A priority Critical patent/CN107799904B/en
Publication of CN107799904A publication Critical patent/CN107799904A/en
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Publication of CN107799904B publication Critical patent/CN107799904B/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14Reflecting surfaces; Equivalent structures
    • H01Q15/16Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
    • H01Q15/161Collapsible reflectors
    • H01Q15/162Collapsible reflectors composed of a plurality of rigid panels

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

The invention provides a kind of FAST radio telescopes central area reflecting surface, belong to FAST radio telescope technical fields.It includes five cable wires in pentagon reflector space, a pair of alternate summits of every cable wire connection pentagon reflector space, pentagon reflector space is divided into 11 sub-regions by the cable wire, one piece of Reflector Panel corresponding with the subregion shape is provided with per sub-regions, each apex of the pentagon reflector space is respectively provided with a main rope node plate, the infall of every two cable wires is respectively provided with a servo-actuated node plate in the pentagon reflector space, and the Reflector Panel is arranged in corresponding node plate.If stem portion is disassembled into an overall reflective face of conventional thought by the present invention, allow central area reflecting surface adaptive main rope net on the premise of reflecting surface rigidity and precision is ensured deformation, the area and weight of monolithic are reduced simultaneously, and live physical condition and operation factors have been taken into full account, it is easy to implement fast quick-detach and assembling.

Description

A kind of FAST radio telescopes central area reflecting surface
Technical field
The present invention relates to FAST radio telescope technical fields, and it is anti-to particularly relate to a kind of FAST radio telescopes central area Penetrate face.
Background technology
500 meters of bore spherical radio telescope (Five-hundred-meter Aperture Spherical radio Telescope) by the use of the hollow hole of Guizhou Karst Region as dressing table location of looking in the distance, build the big single port footpath radio of the first in the world and look in the distance Mirror, it is national big science engineering.Brand-new mentality of designing, advantageous location advantage, makes it breach telescope in addition Hundred meters of engineering limit, have started the new model of the huge radio telescope of construction.
FAST Active Reflector reference planes are a bore 500m, radius 300m sphere, by body support structure, are actuated Device, reflecting surface unit composition.Actively displacement is the maximum feature of FAST reflectings surface, by active control main rope net in observed direction The instantaneous parabola of 300m bores is formed to converge electromagnetic wave, parabola is with the movement of observed celestial body and in 500m mouths during observation Moved on the spherical crown of footpath, so as to realize tracking observation.Main rope net is with the grid of geodesic line form division, the grid at telescope edge For quadrilateral structure, it is pentagonal configuration that central area, which only has a large-scale grid, and remaining position is entirely triangular structure.In There are architecture basics of the disk as internal reflection surface that are rigidly connected at the pentagonal node in heart district domain.
The reflecting surface of FAST radio telescopes central area is except that will meet the intensity same with other types reflecting surface, essence Outside the functional requirement such as degree, anticorrosive, there are some special design features and requirement:
Grid area is big, reaches 250 square meters or so;
The original shape of grid is equilateral pentagon, while pentagonal configuration causes the grid during main rope net adjustment The deformation bigger than other grids can be produced;
Reflecting surface unit on central gridding has the demand often dismantled and resetted.
To meet the technical requirements of FAST radio telescopes central area reflecting surface, it is therefore necessary to design a kind of precision, just Degree and intensity meet requirement, while adaptive main rope net can be deformed during telescope use, and convenient dismounting With the reflecting surface of installation operation.Early stage traditional theory and remaining type cell reflecting surface structure, be a kind of big rigidity of entirety Structure, this structure are suitable for the quadrilateral mesh of triangular mesh or rope network edge, and if applied in central area, then can Many unsuitable shortcomings are embodied, as precision is low, weight is big, inconvenient adaptive deformation and can not realize that fast assembling-disassembling etc. is asked Topic.
The content of the invention
In view of this, it is an object of the invention to provide a kind of FAST radio telescopes central area reflecting surface, it causes The reflecting surface of central area can the adaptively deformation of main rope net, and being suitable on the premise of reflecting surface rigidity and precision is ensured Fast assembling-disassembling.
To achieve these goals, technical scheme is as follows used by patent of the present invention:
A kind of FAST radio telescopes central area reflecting surface, it includes five bar steels in pentagon reflector space Pentagon reflector space is divided into 11 by rope, a pair of alternate summits of every cable wire connection pentagon reflector space, the cable wire Sub-regions, it is interior per sub-regions to be provided with one piece of Reflector Panel corresponding with the subregion shape, the pentagon reflector space Each apex be respectively provided with a main rope node plate, the infall of every two cable wires is respectively provided with the pentagon reflector space One servo-actuated node plate, the Reflector Panel are arranged in corresponding node plate.
Optionally, the bottom of the servo-actuated node plate has first sleeve arranged in a crossed manner and the second sleeve pipe, first sleeve It is respectively fitted over the second sleeve pipe on two cross one another cable wires.
Optionally, the Reflector Panel is divided into three types, and wherein first kind Reflector Panel covers two main rope node plates With a servo-actuated node plate, the second class Reflector Panel covers a main rope node plate and two servo-actuated node plates, the reflection of the 3rd class Panel covers five servo-actuated node plates;Two summits of the first kind Reflector Panel covered respectively with the Reflector Panel two Individual main rope node plate is hinged using the line direction of the two main rope node plates as axle, the 3rd top of first kind Reflector Panel Point is directly placed in the servo-actuated node plate that the Reflector Panel is covered;The second class Reflector Panel is on a summit with being somebody's turn to do The main rope node plate that Reflector Panel is covered is hinged using the direction perpendicular to the Reflector Panel as axle, the second class reflection Another summit of panel is connected with the servo-actuated node plate that the Reflector Panel is covered by oscillating bearing, second class 3rd summit of Reflector Panel is directly placed in another servo-actuated node plate that the Reflector Panel is covered;3rd class The servo-actuated node plate that Reflector Panel is covered on a summit with the Reflector Panel is with perpendicular to the side of the Reflector Panel Be hinged to for axle, corresponding to alternate with the be hinged summit summit of the 3rd class Reflector Panel and the summit with Dynamic node plate is connected by oscillating bearing, and other summits of the 3rd class Reflector Panel are directly placed at the Reflector Panel and covered In other servo-actuated node plates of lid.
Optionally, the first kind Reflector Panel includes being located at the first kind with the articulated structure of corresponding main rope node plate Two first rotating shafts on Reflector Panel and the first axis hole being respectively arranged in a corresponding main rope node plate, described first turn Axle is inserted in first axis hole;The second class Reflector Panel includes located at described with the articulated structure of corresponding main rope node plate The second rotating shaft on second class Reflector Panel and the second axis hole in corresponding main rope node plate, second rotating shaft are inserted in In second axis hole;The 3rd class Reflector Panel includes being located at the 3rd class with the articulated structure of corresponding servo-actuated node plate The 3rd rotating shaft on Reflector Panel and the Triaxial hole in corresponding servo-actuated node plate, the 3rd rotating shaft are inserted in described the In Triaxial hole.
Optionally, in addition to for the servo-actuated tensioning of the moment holding cable wire tensioning state in main rope deformation process fill Put.
Optionally, the size of each Reflector Panel is respectively less than the size of the subregion where it.
Compared with prior art, the beneficial effects of the invention are as follows:
1st, the present invention can rely on live physical condition to be adjusted flexibly and designed, rational in infrastructure feasible;
2nd, the present invention effectively prevent the excessive disadvantage of monolithic Reflector Panel area by way of by large area segmentation combination End, it is possible to achieve the high accuracy of whole region reflecting surface after the high accuracy of monolithic Reflector Panel and splicing;
3rd, the present invention efficiently solves central area reflecting surface overall structure with main rope change in shape and is accordingly servo-actuated and becomes The problem of change;
4th, during reflecting surface mass motion, Reflector Panel both can guarantee that rationally the present invention by rational connected mode Position, dissolved plane resistance again, so that Reflector Panel is not destroyed.
In a word, if an overall structure of conventional thought is disassembled into stem portion by reflecting surface of the present invention so that central area Reflecting surface can on the premise of reflecting surface rigidity and precision is ensured adaptive main rope net deformation, while reduce monolithic Area and weight, and live physical condition and operation factors have been taken into full account, it is easy to implement fast quick-detach and assembling.
Brief description of the drawings
Fig. 1 is the main rope position deformation schematic diagram in FAST telescopic centrals region in the embodiment of the present invention.
Fig. 2 is the cable wire subregion schematic diagram in FAST telescopic centrals region in the embodiment of the present invention.
Fig. 3 is the structural representation of FAST radio telescopes central area reflecting surface in the embodiment of the present invention;
Fig. 4 is that the structure in the embodiment of the present invention after FAST radio telescopes central area reflecting surface removal Reflector Panel is shown Meaning;
Fig. 5 is the structural representation that node plate is servo-actuated in the embodiment of the present invention;
Fig. 6 is the way of restraint schematic diagram of first kind Reflector Panel in the embodiment of the present invention;
Fig. 7 is the way of restraint schematic diagram of the second class Reflector Panel in the embodiment of the present invention;
Fig. 8 is the way of restraint schematic diagram of the 3rd class Reflector Panel in the embodiment of the present invention.
Embodiment
With embodiment, the present invention will be further described in detail below.
The rope net center situation that following examples are directed to FAST radio telescopes devises a kind of central area reflecting surface. In a practical situation, the center pentagon grid that main rope is formed can occur with the mass motion of rope net near home position A small amount of change in location of slight change in shape (as shown in Figure 1), i.e. main rope node.
As seen in figures 3-5, a kind of FAST radio telescopes central area reflecting surface, it includes being located at pentagon echo area Five cable wires 4 in domain, every cable wire 4 connect a pair of alternate summits of pentagon reflector space, and the cable wire 4 is anti-by pentagon It is 11 sub-regions (see Fig. 2,11 sub-regions are divided into the class of A, B, C tri-) to penetrate region segmentation, per be provided with sub-regions one piece with The corresponding Reflector Panel 1,2,3 of the subregion shape, (i.e. main rope 6 is intersecting for each apex of the pentagon reflector space Place) be respectively provided with a main rope node plate 7, in the pentagon reflector space infall of every two cable wires 4 be respectively provided with one with Dynamic node plate 5, the Reflector Panel 1,2,3 are arranged in corresponding node plate.
During installation, servo-actuated attachment means accordingly are penetrated before cable wire connection in advance, steel is tensioned after adjusting each part position suitable Rope.After cable wire tensioning, with the pallet of main rope node plate and servo-actuated attachment means (i.e. servo-actuated node plate) for installation site, press Order installs the panel of three types, and cable wire needs slave tension device, that is, needs the slow motion with main rope in cable wire In deformation, cable wire should keep certain numerical value and stable tensile force.
Optionally, Fig. 5 is still seen, the bottom of the servo-actuated node plate 5 has first sleeve arranged in a crossed manner and the second sleeve pipe, First sleeve and the second sleeve pipe are respectively fitted on two cross one another cable wires 4.
Optionally, Fig. 3 and Fig. 6~8 are seen, the Reflector Panel is divided into three types, and wherein first kind Reflector Panel 1 covers Two main rope node plates and a servo-actuated node plate, the second class Reflector Panel 2 cover a main rope node plate and two servo-actuated sections Point disk, the 3rd class Reflector Panel 3 cover five servo-actuated node plates;Two summits of the first kind Reflector Panel 1 respectively with this Two main rope node plates that Reflector Panel is covered are hinged using the line direction of the two main rope node plates as axle, the first kind 3rd summit of Reflector Panel is directly placed at the servo-actuated node plate that the Reflector Panel covered by planar slide structure 9 On;The main rope node plate that the second class Reflector Panel is covered on a summit with the Reflector Panel is with perpendicular to the reflection The direction of panel is that axle is hinged, covered with the Reflector Panel one of another summit of the second class Reflector Panel Servo-actuated node plate is connected by oscillating bearing 11, and the 3rd summit of the second class Reflector Panel passes through planar slide structure 9 It is directly placed in another servo-actuated node plate that the Reflector Panel is covered;The 3rd class Reflector Panel is on a summit The servo-actuated node plate covered with the Reflector Panel is hinged using the direction perpendicular to the Reflector Panel as axle, and described Alternate with a be hinged summit summit for three class Reflector Panels passes through oscillating bearing with the servo-actuated node plate corresponding to the summit 13 connections, other summits of the 3rd class Reflector Panel are directly placed at the Reflector Panel by planar slide structure 9 and covered In other servo-actuated node plates of lid.
Optionally, as can be seen from figures 6 to 8, the first kind Reflector Panel includes with the articulated structure of corresponding main rope node plate Two first rotating shafts 8 on the first kind Reflector Panel and be respectively arranged in a corresponding main rope node plate first Axis hole, the first rotating shaft are inserted in first axis hole;The second class Reflector Panel is be hinged with corresponding main rope node plate Structure includes the second rotating shaft 10 on the second class Reflector Panel and the second axle in corresponding main rope node plate Hole, second rotating shaft are inserted in second axis hole;The 3rd class Reflector Panel and the corresponding be hinged knot for being servo-actuated node plate Structure includes the 3rd rotating shaft 12 on the 3rd class Reflector Panel and the Triaxial hole in corresponding servo-actuated node plate, 3rd rotating shaft is inserted in the Triaxial hole.
Specifically:
First kind Reflector Panel is isosceles triangle, the square meter of area about 25, is rotation articulated manner in main rope node plate, It is planar slide device in panel apex.The type panel long side when rope net moves keeps constant, and top is in servo-actuated connection Small range is slidably on the holding tray surface of device.First kind Reflector Panel can surround and rotate hinge axes rotary motion, Central area unit needs to be turned to during dismounting on the outside of main rope, is simply flipped back to reset when in use.
Second class Reflector Panel is isosceles triangle, the square meter of area about 15, the rotation vertical with panel is set in apex Axle, insert during connection in the reserved connecting hole of main rope node plate.The another two angle end of triangle, one uses oscillating bearing, and one It is individual to use planar slide device.The connected mode of the connected mode of the panel and the reflecting surface unit of telescope basic model approaches. For the type panel when rope net moves, vertex position is constant but can be rotated relative to main rope node plate.One angle The oscillating bearing connected mode at end, the distance change being servo-actuated when rope net deforms between attachment means and node plate can be overcome to cause Counter plate adverse effect;Small range is slidably on the holding tray surface of servo-actuated attachment means at another angle end.Second class Reflector Panel is in light weight because area is small, can be with manually implemented dismounting and reset.
3rd class Reflector Panel is regular pentagon, the square meter of area about 36;Vertical with panel turn is provided with the end of one angle Moving axis, insert during connection in the reserved connecting hole of servo-actuated node plate.Put down in the pallet of servo-actuated attachment means at adjacent two angles end Slidably, remaining two diagonal angle ends, one is selected oscillating bearing connected mode to small range, and one is selected planar slide on face Device.3rd class Reflector Panel can rely on original ground rise or fall dolly to be dismantled and resetted in mechanism center.
Optionally, in addition to for the servo-actuated tensioning of the moment holding cable wire tensioning state in main rope deformation process fill Put.
In addition, in order to avoid being interfered between each Reflector Panel of motion process, the size of each Reflector Panel is respectively less than The size of subregion where it.
In above-described embodiment, the crossover location of cable wire is nature overlap joint, thus with the movement of main rope, Pentagram shape Cable wire can do corresponding movement therewith.Because the former motion is known controllable, so the range of movement of the latter is controllable And can calculate in advance.
In cable wire lap position, servo-actuated attachment means are set.Servo-actuated attachment means include two wear-resistant copper tubes and pallet, Three can be relatively rotated by being articulated and connected around jointed shaft.In cable wire lap position, cable wire respectively penetrates resistance to Copper sheathing is ground, due to the effect of material property and lubrication between copper sheathing and cable wire, there is less coefficient of friction.Cable wire is relative to be transported The dynamic corresponding sports that can cause servo-actuated attachment means, while pallet can be adjusted relative to height between wear-resistant copper tube.
The structural support of the pallets of servo-actuated attachment means and the pentagonal node plate of main rope together as Reflector Panel.A types, Type B and c-type zonule correspond to Reflector Panel of different shapes respectively.Reflector Panel is connected angle end by suitable connection method Onto the pentagonal node plate of pallet and main rope of attachment means so that each Reflector Panel in main rope motion process with The deformation of internal wire rope structure and change position accordingly, avoid the excessive damage for causing structure and precision of Reflector Panel stress Wound.
In a word, by the way of the present invention is not using grid one unit of correspondence in early stage traditional structure, but pass through Whole region is split into some small regions, the mode of the corresponding unit in each zonule by two subzones.Two subzones Interface point at take can be as rope net deforms and adaptive attachment structure, so that small region can be with master The deformation of rope net and respective change, while each unit is connected on these rope net nodes with rational connected mode.
Those of ordinary skills in the art should understand that:The discussion of any of the above embodiment is exemplary only, not It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples.Within the spirit and principles of the invention, To any omission made for any of the above embodiments, modification, equivalent substitution, improvement etc., should be included in protection scope of the present invention it It is interior.

Claims (6)

1. a kind of FAST radio telescopes central area reflecting surface, it is characterised in that including in pentagon reflector space Five cable wires, a pair of alternate summits of every cable wire connection pentagon reflector space, the cable wire divide pentagon reflector space 11 sub-regions are segmented into, interior per sub-regions to be provided with one piece of Reflector Panel corresponding with the subregion shape, the pentagon is anti- The each apex for penetrating region is respectively provided with a main rope node plate, the infall of every two cable wires in the pentagon reflector space A servo-actuated node plate is respectively provided with, the Reflector Panel is arranged in corresponding node plate.
2. FAST radio telescopes central area reflecting surface according to claim 1, it is characterised in that the servo-actuated node The bottom of disk has first sleeve arranged in a crossed manner and the second sleeve pipe, and first sleeve and the second sleeve pipe are respectively fitted over two and mutually handed over On the cable wire of fork.
3. FAST radio telescopes central area reflecting surface according to claim 2, it is characterised in that the Reflector Panel It is divided into three types, wherein first kind Reflector Panel covers two main rope node plates and a servo-actuated node plate, the reflection of the second class Panel covers a main rope node plate and two servo-actuated node plates, and the 3rd class Reflector Panel covers five servo-actuated node plates;It is described Two main rope node plates that two summits of first kind Reflector Panel are covered with the Reflector Panel respectively are with the two main rope sections The line direction of point disk is hinged for axle, and the 3rd summit of first kind Reflector Panel is directly placed at the Reflector Panel and covered In the servo-actuated node plate of lid;The main rope node plate that the second class Reflector Panel is covered on a summit with the Reflector Panel It is hinged using the direction perpendicular to the Reflector Panel as axle, another summit and the reflecting surface of the second class Reflector Panel The servo-actuated node plate that plate is covered is connected by oscillating bearing, and the 3rd summit of the second class Reflector Panel is directly put Put in another the servo-actuated node plate covered in the Reflector Panel;The 3rd class Reflector Panel is anti-with this on a summit Penetrate the servo-actuated node plate that panel is covered to be hinged as axle using the direction perpendicular to the Reflector Panel, the 3rd class is anti- Alternate with the be hinged summit summit for penetrating panel is connected with the servo-actuated node plate corresponding to the summit by oscillating bearing, institute Other summits for stating the 3rd class Reflector Panel are directly placed in other servo-actuated node plates that the Reflector Panel is covered.
4. FAST radio telescopes central area reflecting surface according to claim 3, it is characterised in that the first kind is anti- Penetrate the articulated structure of panel and corresponding main rope node plate include two first rotating shafts on the first kind Reflector Panel with And the first axis hole in a corresponding main rope node plate is respectively arranged on, the first rotating shaft is inserted in first axis hole;It is described Second class Reflector Panel includes second turn on the second class Reflector Panel with the articulated structure of corresponding main rope node plate Axle and the second axis hole in corresponding main rope node plate, second rotating shaft are inserted in second axis hole;Described 3rd Class Reflector Panel and the articulated structure of corresponding servo-actuated node plate include the 3rd rotating shaft on the 3rd class Reflector Panel with And the Triaxial hole in corresponding servo-actuated node plate, the 3rd rotating shaft are inserted in the Triaxial hole.
5. FAST radio telescopes central area reflecting surface according to claim 1, it is characterised in that also include being used for The moment keeps the slave tension device of the cable wire tensioning state in main rope deformation process.
6. FAST radio telescopes central area reflecting surface according to claim 1, it is characterised in that each Reflector Panel Size be respectively less than the size of the subregion where it.
CN201710889829.5A 2017-09-27 2017-09-27 FAST radio telescope central area reflecting surface Active CN107799904B (en)

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CN108682935A (en) * 2018-06-19 2018-10-19 中国科学院国家天文台 It is a kind of can local loading/unloading FAST reflecting surface centre bore rigidity beam and face plugging structures
CN109244678A (en) * 2018-09-27 2019-01-18 中国科学院国家天文台 A kind of rope system basis telescope reflecting surface structure
CN111180896A (en) * 2020-01-20 2020-05-19 中国科学院国家天文台 System and method for processing data measured by reflecting surface of spherical radio telescope

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Publication number Priority date Publication date Assignee Title
CN108682935A (en) * 2018-06-19 2018-10-19 中国科学院国家天文台 It is a kind of can local loading/unloading FAST reflecting surface centre bore rigidity beam and face plugging structures
CN108682935B (en) * 2018-06-19 2023-11-03 中国科学院国家天文台 FAST reflecting surface center Kong Gangxing beam panel plugging structure capable of being partially assembled/disassembled
CN109244678A (en) * 2018-09-27 2019-01-18 中国科学院国家天文台 A kind of rope system basis telescope reflecting surface structure
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
CN111180896A (en) * 2020-01-20 2020-05-19 中国科学院国家天文台 System and method for processing data measured by reflecting surface of spherical radio telescope

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