CN104617369B - A kind of new rib development mechanism of high accuracy umbrella antenna - Google Patents
A kind of new rib development mechanism of high accuracy umbrella antenna Download PDFInfo
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- CN104617369B CN104617369B CN201410707433.0A CN201410707433A CN104617369B CN 104617369 B CN104617369 B CN 104617369B CN 201410707433 A CN201410707433 A CN 201410707433A CN 104617369 B CN104617369 B CN 104617369B
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Abstract
A kind of new rib development mechanism of high accuracy umbrella antenna, motor and decelerator provide power for rib development mechanism；Leading screw is connected by shaft coupling block with decelerator, the own rotation under the drive of decelerator, and the rotational motion of leading screw is converted into the linear motion up and down of nut loaded on leading screw for nut sleeve；Slider disc is sleeved on fairlead, is connected with nut by stop screw, is moved up and down with nut；Connecting rod one end is hinged in slider disc by rotating shaft, and other end end is hinged with lock arm；Umbrella antenna rib is arranged on the H faces of lock arm, and lock arm is driven by connecting rod and rotated, then drives antenna rib to complete the action for launching or drawing in；Locking device is used to be locked after antenna rib launches in place in place, antenna rib is had enough rigidity；The present invention realizes high accuracy mushroom antenna and smoothly launches and draw in and process control, with repeating the characteristics of precision of expansion is high and thermal deformation is small.
Description
Technical field
The present invention relates to a kind of new rib development mechanism of high accuracy umbrella antenna, the exhibition for realizing high accuracy umbrella antenna
Open and draw in, belong to satellite antenna mechanism technology field.
Background technology
The present invention derives from the development of high accuracy radial rib umbrella deployable antenna, in order to adapt to envelope during satellite launch
Demand, large aperture antenna should possess storage than it is high the characteristics of, in satellite launch, antenna locking is accommodated on satellite platform, in-orbit
Reinflated into working condition afterwards, as shown in figure 1, this requires antenna product in addition to set task function, also wanting can
Realize the function of drawing in launch.
As shown in Fig. 2 radial rib umbrella deployable antenna is main by connecting shaft block (20), radial rib (21), feed component
(22), the composition such as netted main reflector (23), feed support (24), subreflector (25).Radial rib (21) is whole netted master
The skeleton structure of reflector (23), for installing fixed tension cord net and wire netting, and connecting shaft block (20) is for driving radial rib
(21) working condition is expanded to by rounding state.
High accuracy radial rib umbrella deployable antenna works in Ka frequency ranges, it is desirable to which antenna is better than in rail type face precision
0.4mm (RMS), compared with conventional solid surface antenna, net-shape antenna net surface structure and type face forming principle determine the type of antenna
The influence for facing outside environmental elements is more sensitive.Can be seen that connecting shaft block (20) by the structure of antenna is all radial ribs
(21), the basis of netted main reflector (23) and feed support (24), is also to drive antenna rib to be expanded to working condition by drawing in
Critical product, therefore it is designed propose it is claimed below：
1) launch flexible, with enough driving moment nargin, it is ensured that the reliability of expansion；
2) launch that there is lock function afterwards in place to solidify antenna operation on orbit state；
3) launch in-placing precision and repeat precision of expansion requirement height, the type face precision of antenna operation on orbit is ensured with this；
4) should meet Antenna aperture upwards, downwards and the functional requirement of these three ground experiment operating modes forward；
5) good stability, thermal deformation are small.
Looked into newly by data, mainly there are two kinds of concrete structures at present for the expansion mode of high accuracy umbrella deployable antenna
Form：A kind of is the umbrella deployable antenna being applied on repeater satellite " ray 5 " that Russia develops, and is pulled using steel wire
Mode drive expansion, i.e., every rib is pulled by a steel wire and launched, and can only be transmitted pulling force due to steel wire, can not be transmitted and push away
Power, so antenna can not stop after expansion process starts, can not realize reversely drawing in, and work as antenna by development mechanism
Mouth forward when the latter half rib can under gravity moment launch, top half rib but still in rounding state, so nothing
Method carries out mouth, and state launches experiment forward；Another kind is that the umbrella being applied on its repeater satellite TDRS that the U.S. develops can be opened up
Kaitian's line, by the way of leading screw drives expansion, because leading screw has self-locking action, so antenna can carry out mouth forward-facing state
Launch experiment, and if in-orbit expansion process occur it is abnormal can stop launching or reversely draw in, but for rib development mechanism
Function, performance requirement and concrete structure do not find pertinent literature report.
The content of the invention
Present invention solves the technical problem that being：Overcome prior art not enough, there is provided a kind of new rib of high accuracy umbrella antenna
Development mechanism, realizes high accuracy mushroom antenna and smoothly launches and draw in and process control, and with repeating, precision of expansion is high and heat
The characteristics of deforming small.
The present invention solve technical scheme be：A kind of new rib development mechanism of high accuracy umbrella antenna, including upper bed-plate
(1), lower bottom base (2), motor (3), decelerator (4), leading screw (5) nut (6) pair, fairlead (7), slider disc (8), connecting rod (9),
Connecting rod base (10), lock arm (11), in place locking arm seat (12), locking device (13), Hall circuit (14), guide bearing
(15), stop screw (16), microswitch (17), upper ejector pin (18), lower push rod (19), connecting shaft block (20)；Upper bed-plate (1) and under
Base (2) is fixedly connected by screw；Decelerator (4) is moved on the output shaft of motor (3) for rib development mechanism is provided
Power；Decelerator (4) is fixedly and coaxially connected with fairlead (7)；Fairlead (7) installed in lower bottom base (2) lower surface, with lower bottom base
(2) it is coaxial；Leading screw (5) is connected by connecting shaft block (20) with decelerator (4), is turned in the drive lower leading screw (5) itself of decelerator (4)
Dynamic, nut (6) is set on leading screw (5), and the rotational motion of leading screw (5) is converted into the linear motion up and down of nut (6)；Slide
Disk (8) is sleeved on fairlead (7), is connected with nut (6) by stop screw (16), is moved up and down with nut (6)；Even
Bar (9) one end is hinged in slider disc (8) by connecting rod base (10), and connecting rod (9) other end end is hinged with lock arm (11) upper end；
Lock arm (11) interlude is hinged by locking arm seat (12) with the upper surface of lower bottom base (2)；Umbrella antenna rib is arranged on locking
On the H faces of arm (11), lock arm (11) is driven by connecting rod (9) and rotated, then drive that antenna rib completes to launch or draw in it is dynamic
Make；Locking device (13) can be locked on lower bottom base (2) outer surface after lock arm (11) launches in place in place
Arm (11) lower end, makes lock arm (11) strengthen rigidity；Hall circuit (14) is close to the position of leading screw (5) installed in upper bed-plate (1),
The revolution of leading screw (5) can be gathered, to grasp the deployed condition of antenna in real time；Circumferentially direction is uniformly pacified in slider disc (8)
Equipped with three groups of guide bearings (15), every group has at upper and lower two, and the inner ring of each guide bearing (15) is arranged on by bearing block to be slided
On Moving plate (8), the outer ring of each guide bearing (15) contacts with fairlead (7) so that between slider disc (8) and fairlead (7)
Sliding friction become rolling friction, reduce the frictional dissipation between slider disc (8) and fairlead (7)；Upper bed-plate (1), bottom
Seat (2) is respectively equipped with one group of microswitch (17), and the upper and lower surface of slider disc (8) is respectively provided with upper ejector pin (18), lower push rod (19),
When slider disc (8) moves upward to rib deployed condition, upper ejector pin (18) touches the microswitch (17) of upper bed-plate (1), sends
Signal designation launches in place, and when slider disc (8) is moved downwardly to rib rounding state, lower push rod (19) touches lower bottom base (2)
Microswitch, sends signal designation and draws in place.
Present invention advantage compared with prior art is：
(1) be used for for the mode of leading screw and connecting rod assembly transmission to drive high accuracy umbrella antenna rib to complete to launch to receive by the present invention
Hold together, its process control can meet the demand of the various operating modes of mushroom antenna；
(2) present invention devises guide bearing in mechanism, and the sliding friction for making slider disc move generation is changed into rolling and rubs
Wipe, the frictional dissipation inside reducing mechanism makes mechanism kinematic more flexible；
(3) position locking device is installed in mechanism of the present invention state cured after antenna rib launches in place, makes umbrella antenna
With repetition precision of expansion higher, test show that repetition precision of expansion is 0.01 °；
(4) mechanism's upper bed-plate of the present invention and lower bottom base using carbon fibre material ply angles come substituted metal material, base
Resemblance design meets the moulding process requirement of carbon fibre material, rib development mechanism is had preferable heat endurance, more can
Adapt to space environment.
Brief description of the drawings
Fig. 1 is umbrella antenna locking state and deployed condition schematic diagram；
Fig. 2 is umbrella antenna structure composition, and the present invention applies the schematic diagram on umbrella antenna；
Fig. 3 is rib development mechanism operation principle schematic diagram；
Fig. 4 is rib development mechanism deployed condition generalized section；
Fig. 5 is rib development mechanism rounding state generalized section；
Fig. 6 is close-up schematic view at rib development mechanism guide bearing；
Fig. 7 indicates schematic diagram in place for rib development mechanism；
Fig. 8 is the carbon fiber shell of rib development mechanism.
Specific embodiment
Below in conjunction with the accompanying drawings and specific example is discussed in detail implementation process of the invention.
As shown in Fig. 2 radial rib umbrella deployable antenna is main by the present invention, radial rib 21, feed component 22, netted master
The compositions such as reflector 23, feed support 24, subreflector 25.The present invention is the installation foundation of umbrella antenna, the He of feed component 22
Subreflector 25 is arranged in feed support 24, and feed support 24 is arranged on upper surface of the invention, and antenna rib 21 is whole
The skeleton structure of netted main reflector 23, for installing fixed tension cord net and wire netting, circumferentially direction is uniform for antenna rib 21
On H faces of the invention, antenna rib 21 is driven to be expanded to working condition by rounding state by the present invention, as shown in figure 1,
And its process is reversible.
Operation principle of the invention is as shown in figure 3, α1It is the angle between connecting rod and slider disc, α2It is connecting rod and lock arm
Between angle, provide thrust F by set screw screw mechanism, promote the work of one group of connecting rod to produce final execution connecting rod
Torque, realizes the expansion of antenna rib and draws in.
Structure of the invention includes upper bed-plate 1, lower bottom base 2, motor 3, decelerator 4, the pair of 5 nut of leading screw 6, fairlead 7, cunning
Moving plate 8, connecting rod 9, connecting rod base 10, lock arm 11, locking arm seat 12, in place locking device 13, Hall circuit 14, guide bearing
15th, stop screw 16, microswitch 17, upper ejector pin 18, lower push rod 19 etc.；Motor 3 and decelerator 4 are dynamic for rib development mechanism is provided
Power；Leading screw 5 is connected by shaft coupling block 20 with decelerator 4, and the own rotation under the drive of decelerator 4, nut 6 is set in leading screw 5
On, the rotational motion of leading screw 5 is converted into the linear motion up and down of nut 6；Slider disc 8 is sleeved on fairlead 7, by spacing
Screw 16 is connected with nut 6, is moved up and down with nut 6；As shown in figure 3, connecting rod 9 is equivalent to AB sections in Fig. 3, A ends lead to
Cross axle to be hinged in slider disc 8, B ends are hinged with lock arm 11, mechanism blockage is caused to prevent connecting rod 9 from swinging, A, B two ends are hinged
Place all uses oscillating bearing；The top of lock arm 11 is hinged on the B ends of connecting rod 9, is driven by connecting rod 9, middle to be cut with scissors with locking arm seat 12
Connect, locking arm seat 12 is fixed on mechanism's lower bottom base 2, equivalent to the C points in schematic diagram, H faces are the installation of antenna rib for hinged place
Interface, lock arm 11 produces a certain amount of angular displacement under the driving of connecting rod 9 by the center of circle of C points so that antenna rib 21 completes exhibition
The action opened or draw in；Umbrella antenna rib 21 is arranged on the H faces of lock arm 11, and the mounting surface of antenna rib 21 is perpendicular under deployed condition
Nogata is to as shown in Figure 4 and Figure 5.
Rib development mechanism upper bed-plate 1 and lower bottom base 2 are respectively equipped with one group of microswitch, and the upper and lower surface of slider disc 8 is equipped with two
Individual push rod, as shown in fig. 7, when antenna launches, motor 3 and decelerator 4 drive leading screw 5 to rotate forward, and promote nut 6 and slider disc
8 motions upwards, slider disc 8 drives lock arm 11 to be rotated counterclockwise by the center of circle of C points by connecting rod 9, and antenna rib 21 follows locking
Arm 11 moves to deployed condition by rounding state, launches when in place, and upper ejector pin 18 touches the microswitch of upper bed-plate 1, sends letter
Number indicate launch in place, locking device 13 by the expansion of antenna rib 21, determine in place by status lock in place；When antenna draws in, first solve manually
It is locked into position locking device 13 to discharge antenna rib 21, motor 3 and decelerator 4 drive leading screw 5 to rotate backward, and promote nut 6 and slide
Moving plate 8 is moved downward, and slider disc 8 drives lock arm 11 to be rotated clockwise by the center of circle of C points by connecting rod 9, and antenna rib 21 is followed
Lock arm 11 moves to rounding state by deployed condition, draws in when in place, and lower push rod 19 touches the microswitch of lower bottom base 2, hair
Go out signal designation to draw in place.
Locking device 13 is used to be locked after the drive antenna of lock arm 11 rib 21 launches in place in place, has antenna rib 21
There is rigidity high, and make umbrella antenna that there is 0.01 ° of repetition precision of expansion high.
Hall circuit 14 can gather the revolution of leading screw 5, and the end circumferencial direction of development mechanism leading screw 5 is uniformly provided with 4 pieces
Magnet steel, leading screw 5 often rotates 1/4 circle and can detect a hall signal, and now respective antenna launches 1.16 ° (launching 73 ° altogether), i.e.,
Often launch 1.16 ° during antenna expansion and can detect a hall signal, such that it is able to grasp the expansion of antenna in real time
State.
In order to reduce the loss of the internal friction in rib development mechanism motion process, circumferentially direction is uniform in slider disc 8
Three groups of deep groove ball bearings are installed as guide bearing 15, every group has at upper and lower two, as shown in fig. 6, the inner ring of each bearing leads to
Bearing block is crossed in slider disc 8, outer ring contacts with fairlead 7 so that the sliding friction between slider disc 8 and fairlead 7
Rolling friction has been reformed into, in-house kinetic equation loss has been reduced.
Rib development mechanism is the basis that all antenna ribs 21 and feed component 22 are installed, the stability on basis and thermal deformation pair
The stability and antenna Control Thermal Deformation in its line style face are most important, and the housing of mechanism is the installation base of all parts
Plinth, in order to improve type face stability, reduce antenna thermal deformation, the upper bed-plate 1 and lower bottom base 2 of mechanism use carbon fiber laying knot
Structure, its structure design adapts to the production process property of carbon fibre material, housing non-threaded mounting hole, all flanges and bending place without
Back chipping right angle feature, and leave design margin of the technique fillet not less than 2mm, the left figure of shell structure such as Fig. 8 and right figure institute
Show.
The above, optimal specific embodiment only of the invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (6)
1. the new rib development mechanism of a kind of high accuracy umbrella antenna, it is characterised in that：Including upper bed-plate (1), lower bottom base (2), electricity
Machine (3), decelerator (4), leading screw (5), nut (6), fairlead (7), slider disc (8), connecting rod (9), connecting rod base (10), lock arm
(11), locking arm seat (12), in place locking device (13), Hall circuit (14), guide bearing (15), stop screw (16), micro-
Dynamic switch (17), upper ejector pin (18), lower push rod (19), connecting shaft block (20)；Upper bed-plate (1) and lower bottom base (2) are fixed by screw
Connection；Decelerator (4) on the output shaft of motor (3), for rib development mechanism provides power；Decelerator (4) and fairlead
(7) it is fixedly and coaxially connected；Fairlead (7) is coaxial with lower bottom base (2) installed in lower bottom base (2) lower surface；Leading screw (5) is by even
Axle block (20) is connected with decelerator (4), and in drive lower leading screw (5) own rotation of decelerator (4), nut (6) is set in leading screw
(5) on, the rotational motion of leading screw (5) is converted into the linear motion up and down of nut (6)；Slider disc (8) is sleeved on fairlead (7)
On, it is connected with nut (6) by stop screw (16), moved up and down with nut (6)；Connecting rod (9) one end passes through connecting rod base
(10) it is hinged in slider disc (8), connecting rod (9) other end is hinged with lock arm (11) upper end；Lock arm (11) interlude passes through
Locking arm seat (12) is hinged with the upper surface of lower bottom base (2)；Umbrella antenna rib is arranged on the H faces of lock arm (11), lock arm
(11) driven by connecting rod (9) and rotated, then drive antenna rib to complete the action for launching or drawing in；Locking device (13) is pacified in place
On lower bottom base (2) outer surface, lock arm (11) lower end can be locked after lock arm (11) launches in place, make lock arm
(11) rigidity is strengthened；Hall circuit (14) near the position of leading screw (5), can gather turning for leading screw (5) installed in upper bed-plate (1)
Number, to grasp the deployed condition of antenna in real time；Circumferentially direction is uniformly provided with three groups of guide bearings in slider disc (8)
(15), every group has at upper and lower two, and the inner ring of each guide bearing (15) is arranged in slider disc (8) by bearing block, and each is led
Contacted with fairlead (7) to the outer ring of bearing (15) so that the sliding friction between slider disc (8) and fairlead (7) becomes rolling
Dynamic friction, reduces the frictional dissipation between slider disc (8) and fairlead (7)；Upper bed-plate (1), lower bottom base (2) are respectively micro- equipped with one group
Dynamic switch (17), the upper and lower surface of slider disc (8) is respectively provided with upper ejector pin (18), lower push rod (19), when slider disc (8) is transported upwards
When moving rib deployed condition, upper ejector pin (18) touches the microswitch (17) of upper bed-plate (1), sends signal designation and launches in place,
When slider disc (8) is moved downwardly to rib rounding state, lower push rod (19) touches the microswitch of lower bottom base (2), sends signal
Indicate to draw in place.
2. the new rib development mechanism of a kind of high accuracy umbrella antenna according to claim 1, it is characterised in that：Using described
The mode that leading screw (5) combines transmission with connecting rod (9) is used to drive lock arm (11) to complete to launch to draw in, and this launches gathering process energy
Enough control.
3. the new rib development mechanism of a kind of high accuracy umbrella antenna according to claim 1, it is characterised in that：The guiding
Bearing (15) is deep groove ball bearing, slider disc (8) is moved the sliding friction for producing and is changed into rolling friction, inside reducing mechanism
Frictional dissipation, moves rib development mechanism more flexible.
4. the new rib development mechanism of a kind of high accuracy umbrella antenna according to claim 1, it is characterised in that：It is described in place
Locking device (13) launches afterwards that lock arm (11) is state cured in place in lock arm (11), lock arm (11) is repeated with height
Precision of expansion, test show that the precision of expansion that repeats high can reach 0.01 °.
5. the new rib development mechanism of a kind of high accuracy umbrella antenna according to claim 1, it is characterised in that：The upper bottom
Seat (1) and lower bottom base (2) use carbon fibre material ply angles, have the new rib development mechanism of high accuracy umbrella antenna preferable
Heat endurance, be suitable for space environment, upper bed-plate (1) and lower bottom base (2) non-threaded mounting hole, upper bed-plate (1) and bottom
Without back chipping right angle feature, surplus of the technique fillet more than or equal to 2mm is left in all bending places for all bending places of seat (2).
6. the new rib development mechanism of a kind of high accuracy umbrella antenna according to claim 1, it is characterised in that：The slip
Disk (8), upper bed-plate (1) and lower bottom base (2) are cylinder or column regular polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707433.0A CN104617369B (en) | 2014-11-27 | 2014-11-27 | A kind of new rib development mechanism of high accuracy umbrella antenna |
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|---|---|---|---|
| CN201410707433.0A CN104617369B (en) | 2014-11-27 | 2014-11-27 | A kind of new rib development mechanism of high accuracy umbrella antenna |
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| CN104617369A CN104617369A (en) | 2015-05-13 |
| CN104617369B true CN104617369B (en) | 2017-06-13 |
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| CN105390790B (en) * | 2015-11-03 | 2018-08-07 | 西安空间无线电技术研究所 | A kind of novel high-precision locking device in place |
| CN105576337B (en) * | 2015-12-11 | 2018-05-22 | 哈尔滨工业大学 | One kind can collapse formula Shell of rrdar antenna and its method of work |
| CN106402319B (en) * | 2016-11-30 | 2019-08-13 | 深圳果力智能科技有限公司 | A kind of drive lacking transmission device based on flange transmission |
| CN107425295B (en) * | 2017-07-07 | 2023-06-16 | 燕山大学 | Layered foldable umbrella-shaped expandable antenna |
| CN107959124A (en) * | 2017-11-22 | 2018-04-24 | 西安航天恒星科技实业(集团)公司 | The light-duty net-shape antenna of expansion |
| CN107944139B (en) * | 2017-11-23 | 2021-04-13 | 西安空间无线电技术研究所 | Parametric modeling method for mesh reflector antenna |
| CN107946727B (en) * | 2017-12-21 | 2023-10-27 | 星际漫步（北京）航天科技有限公司 | Expandable dish antenna system and expansion method thereof |
| CN108183307B (en) * | 2018-02-28 | 2020-04-10 | 西安空间无线电技术研究所 | Large-diameter umbrella-shaped antenna unfolding mechanism |
| CN108860661B (en) * | 2018-07-19 | 2020-05-15 | 北京空间技术研制试验中心 | Driving mechanism |
| CN110504521B (en) * | 2019-08-14 | 2021-06-11 | 西安空间无线电技术研究所 | Unfolding mechanism for high-precision umbrella-shaped antenna |
| CN111009714B (en) * | 2019-12-12 | 2021-11-23 | 西安工业大学 | Satellite-borne umbrella-shaped antenna structure with self-unfolding speed regulating device and unfolding method thereof |
| CN111740229B (en) * | 2020-07-29 | 2024-05-24 | 湖南航天环宇通信科技股份有限公司 | Large-caliber vehicle-mounted expandable composite antenna |
| CN112996155B (en) * | 2021-02-01 | 2022-09-30 | 北京空间飞行器总体设计部 | Umbrella antenna rib thermal control device |
| CN113131172B (en) * | 2021-04-06 | 2022-02-11 | 北京理工大学 | Rope-driven foldable umbrella-shaped antenna |
| CN113381161B (en) * | 2021-05-24 | 2022-08-23 | 西安电子科技大学 | Single-folding umbrella antenna unfolding mechanism capable of being unfolded and folded repeatedly |
| CN114188696A (en) * | 2021-11-24 | 2022-03-15 | 中国船舶重工集团公司第七二三研究所 | Compact type automatically-unfolded multi-antenna structure |
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