CN106054932B - The annulated column type rope net reflecting system of single telescopic rod turntable driving - Google Patents
The annulated column type rope net reflecting system of single telescopic rod turntable driving Download PDFInfo
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- CN106054932B CN106054932B CN201610517246.5A CN201610517246A CN106054932B CN 106054932 B CN106054932 B CN 106054932B CN 201610517246 A CN201610517246 A CN 201610517246A CN 106054932 B CN106054932 B CN 106054932B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/10—Control of position or direction without using feedback
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/10—Control of position or direction without using feedback
- G05D3/105—Solar tracker
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Abstract
The invention discloses a kind of annulated column type cable net structure reflecting systems of single telescopic rod turntable driving.It includes outer toroid (1), centre strut (3), wire side rope (9), hauling rope (10), linear expansion device (4), fixed support rod (5), lower rotatable platform (6), support frame (7) and upper mounting plate (13)；Centre strut is fixed on outer toroid (1) center by supporting cables (12)；Feed (2) are installed at the top of centre strut；Equipped with fastening rope (8) between wire side rope and hauling rope, the length for adjusting fastening rope can control the deformation of wire side rope, change reflector shape；The length for adjusting linear expansion device (4) makes upper mounting plate tracking pitch angle variation；Orientation angles are tracked by the rotation of lower rotatable platform (6), meet the pose of system requirements.The configuration of the present invention is simple, light and flexible, the orientation and pitching for being able to achieve reflecting system accurately control, and can be used for the reflection or convergence of light, electric flux.
Description
Technical field
It is specifically a kind of to be driven by single telescopic rod turntable to realize that orientation is bowed the invention belongs to electromechanical actuation techniques field
The annulated column type rope net reflecting system for facing upward control, can be used for the reflection or convergence of electromagnetic energy or luminous energy.
Background technique
Currently, large-scale reflecting system is not only widely used in electronic information technical field, but also gradually expand
Application of solar is opened up and be applied to, strong technical guarantee can be provided for the application of next-generation clean energy resource.It is existing
Large-scale reflecting system generally include reflector and tracking and positioning mechanism.Reflector structure include Reflector Panel and support backrest,
Tracking and positioning mechanism includes orientation and pitch angle control device.
For the type face precision for guaranteeing reflector, Reflector Panel mostly uses real faceplate panels in the structure of large size reflector at present,
To adapt to the stiffness requirement under gravity under ground surface environment, wind load, the effect of sleet load.This clock large size reflector is due to quality
As the growth of index is presented in the increase of bore, thus its development cost, lead time are all relatively high, it is difficult to make extensively
With.
Although also having reflecting surface is the reflector of mesh panel construction, bore surface density is still much larger than 10.0Kg/
m2.China will complete the 500m bore spherical radio telescope built in 2016 and use based on Active Reflector technology, soft
Rope draws the system-level innovative designs such as feed technology, has been ultralight reflector structure on the ground, but its bore face
Density remains as 6.6Kg/m2, construction cost is not only resulted in and material cost is high, and is unfavorable for promoting the use of on a large scale.
In space, cable net structure Large deployable antenna has obtained commonly used.Since the gravity of space environment is intimate
It is zero, the soft structure of this hard and soft combination can form desired type face precision, and Ultra light-weight, its usual bore face is close
Degree is no more than 0.4Kg/m2, this structure building cost and material cost expense are very low, but this cable net structure cannot be used directly
In ground, because the type face precision of reflecting surface can be greatly reduced after being influenced by external loads such as gravity on ground and wind,
It is unable to satisfy the requirement used.
Adjust control device in pitching and orientation angles, i.e., on tracker, commonly traditional twin shaft series connection tracking at present
Device is distinguished the orientation of control azimuth and the angle of pitching by two axis, passes sequentially through the variation of angle to realize tracking and positioning,
The structure of this tracker is more complicated, flexibility and stability are poor, and processing and maintenance cost are high, and installation effectiveness is low, produces simultaneously
Raw accumulated error is difficult to eliminate.
Summary of the invention
It is an object of the invention to be directed to above-mentioned prior art deficiency, provide it is a kind of by single telescopic rod turntable drive
Annulated column type rope net reflecting system is reduced weight and cost, is improved the type of cable mesh reflector with the structure of the entire reflecting system of simplification
Precision is continuously tracked in face precision and tracker, meets the requirement that ground uses.
The technical proposal of the invention is realized in this way：
One, technical principle
In nature, cobweb is influenced very little by gravity due to Ultra light-weight, and spider's thread intensity is very high, so
Cobweb the wind and rain load the effects of under still can shape and play effect well.
With the continuous development of mankind's science and technology, high-intensitive lightweight material such as carbon fiber pipe, Kev bracing wire etc. is gradually obtained
It promotes and applies, and its cost is also remarkably decreased, and is generalized to numerous products for civilian use via AEROSPACE APPLICATION, such as fishing rod, kite
Line etc..Traditional metal material such as thin metallic tubd, at low cost, light weight have good intensity simultaneously, are also widely applied
In high-tech area.
The present invention refers to cobweb design feature, can by dexterous cable net structure formation using high-strength light material
The large-scale reflecting surface of external load is born, outer toroid is constructed using carbon fiber pipe or thin metallic tubd, the mouth of reflecting surface in system
Diameter surface density is less than 2.0Kg/m as far as possible2；Tracker uses two they sup-port reflectings surface, and one of support rod can be stretched
Contracting, for controlling the pitching of reflecting surface；Two support rods are installed vertically on turntable, are rotated by turntable and are completed the control of reflecting surface orientation
System.Entire reflecting system conditions such as stiffness requirement in the case where guaranteeing that reflector type face precision, tracking accuracy and external load act on
Under, structure is as light as possible, and material used is also as few as possible, so that its development cost and maintenance cost also will be as low as possible,
It can be widely used.
Two, technical solution
According to above-mentioned principle, the annulated column type rope net reflecting system of single telescopic rod turntable driving of the invention, a kind of list is flexible
The annulated column type cable net structure reflecting system of bar turntable driving, including reflector and tracker,
The reflector, including outer toroid, centre strut；Fasten rope, wire side rope, hauling rope and supporting cables；Fasten rope, net
Face rope and hauling rope three form flexible cable net, are equipped with feed or heat collector at the top of centre strut；
The tracker, including linear expansion device, fixed support rod, lower rotatable platform, support frame, upper mounting plate, pitching
Servo motor and bearing servo motor are equipped with prismatic pair and two revolute pairs, fixed support rod installation on linear expansion device
There is third revolute pair；
It is characterized in that：
Linear expansion device in tracker is flat with upper mounting plate, lower rotation respectively by the first revolute pair and the second revolute pair
Platform is connected；The lower end of fixed support rod is fixed on lower rotatable platform, and upper end is connected by third revolute pair with upper mounting plate；It moves
It moves secondary upper end to connect by the first revolute pair upper mounting plate, lower end is connect by the second revolute pair with lower rotatable platform；
Outer toroid in reflector is formed using the hollow circular-tube of radial bore, is equipped with upper and lower pin, net in radial hole
Face rope is connect by upper pin with centre strut, and fastening rope is connect by lower pin with centre strut, and supporting cables by selling above and below
Nail is connect with centre strut；It being connected between centre strut and supporting cables by the mode of interlocking, connection number is the multiple for taking three,
To obtain the good triangular structure of stability, avoid relatively rotating between outer toroid and centre strut；
Wire side rope in reflector is made of the criss-cross net that more flexible ropes are made into, and is mounted on pin in
Between heart pillar, bind thereon thin to converge the flexible plating metal of sunlight to reflection electromagnetic wave wire mesh, or binding
Film forms first layer wire side；
Hauling rope in reflector is made of, the two of every retractable and flexible rope more retractable and flexible ropes
End is connected with the corresponding rope node of wire side rope and fastening rope respectively, passes through the shape for adjusting the length control wire side rope of hauling rope
Become, the shape of reflecting surface is made to change；
Fastening rope in reflector is made of the criss-cross net that more flexible ropes are made into, is mounted on lower pin
Between centre strut, second layer wire side is formed.
Preferably, the upper mounting plate of above-mentioned system uses fashioned iron or circular configuration, lower rotatable platform is using circle or three
Angular structure, the upper and lower platform parallel installation.
Preferably, the elevation servo motor of above system is connect with driving linear expansion device, upper mounting plate is driven to complete
Pitch angle tracking, bearing servo motor are connect with rotatable platform, are rotated by platform and are completed orientation angles tracking.
Preferably, the wire side rope of above system, hauling rope, fastening rope and supporting cables are all made of high-intensitive Kev bracing wire
Soft material.
Preferably, the outer ring endless tube of above-mentioned system, centre strut and linear expansion device, are all made of high intensity
Carbon fiber pipe lightweight material.
The invention has the advantages that：
It is and existing 1. the present invention crosses the ground return device that tensioning forms reflecting surface using two layers of criss-cross flexible cable Netcom
Some is compared using real faceplate panels as the ground return device of reflecting surface, is saved a large amount of metal material, is significantly reduced
The quality of ground return device, reduces development cost.
2. outer toroid of the present invention uses the hollow circular-tube structure of radial aperture, pin is installed in hole, rope net passes through pin
It is connect with centre strut, eliminates the huge support construction of existing real face ground return device, use simple support construction energy
Guarantee ideal type face precision, greatly simplifies the composition of reflector, thus easily realize the control of its orientation and pitching,
It further reduced development, running and maintenance cost, shorten the lead time.
3. the present invention uses wire mesh reflecting surface, or the metallic film of airing hole is distributed with, make wind, rain, snow
These natural load easily pass through, and improve the bearing capacity of this system, simultaneously because cable net structure is compared with metal material,
Coefficient of thermal expansion is lower, this will significantly reduce influence of the thermal force to reflector type face precision, makes this system more suitable for earth's surface
The application of environment.
4. in cable net structure reflecting surface of the invention, using being cross-linked between upper and lower supporting cables and centre strut, effectively
It solves this ring columnar structures torsion instability problem that may be present, significantly improves the structure fundamental frequency of reflecting system.
5. the present invention can use the knot of Automatic-expanding or assembled by hand due to reflecting surface Ultra light-weight, simplicity
Configuration formula is suitble to quickly assembling and builds, can significantly reduce the mobile transportation cost of reflector system, promote anti-breaking-up and refitting
Ability；
6. this system adds the quick control in single telescopic device structure realization orientation, pitch attitude using rotatable platform, into one
Development, running and the maintenance cost for reducing whole system complexity, and reducing are walked, the lead time is shortened.
Detailed description of the invention
Fig. 1 is motion state structure chart of the invention；
Fig. 2 is original state structure chart of the invention；
Fig. 3 is hollow circular-tube of the invention, connecting joint and pin feature figure；
Fig. 4 is tracker structure figure of the invention；
Fig. 5 is in the annulated column type rope net reflector that first embodiment of the invention bore is 5m, and row is with before on centre strut
The antisymmetry of six roots of sensation supporting cables is cross-linked relational graph；
Fig. 6 is in the annulated column type rope net reflector that first embodiment of the invention bore is 5m, and row is with after under centre strut
The antisymmetry of six roots of sensation supporting cables is cross-linked relational graph；
Fig. 7 is row and preceding ten on centre strut in the annulated column type rope net reflector that second embodiment of the invention bore is 15m
Two supporting cables are just symmetrically cross-linked relational graph；
Fig. 8 is row and rear ten under centre strut in the annulated column type rope net reflector that second embodiment of the invention bore is 15m
Two supporting cables are just symmetrically cross-linked relational graph；
Fig. 9 is the annulated column type rope net reflector that medium caliber of the present invention is 5m, the deformation cloud under agravic effect operating condition
Figure；
Figure 10 is the annulated column type rope net reflector that medium caliber of the present invention is 5m, is under the effect of gravity in position placement of looking up to heaven
Aberration nephogram under operating condition；
Figure 11 is the annulated column type rope net reflector that medium caliber of the present invention is 5m, and pitch angle is 60 degree of works under the effect of gravity
Aberration nephogram under condition；
Figure 12 is the annulated column type rope net reflector that medium caliber of the present invention is 15m, the deformation under agravic effect operating condition
Cloud atlas；
Figure 13 is the annulated column type rope net reflector that medium caliber of the present invention is 15m, is under the effect of gravity in that position of looking up to heaven is put
Set the Aberration nephogram under operating condition；
Figure 14 is the annulated column type rope net reflector that medium caliber of the present invention is 15m, and pitch angle is 60 degree under the effect of gravity
Aberration nephogram under operating condition；
The invention will be described in further detail referring to the drawings：
Embodiment 1：Reflector bore is the annulated column type rope net reflecting system of 5m.
Referring to Figures 1 and 2, this example includes reflector and tracker two parts, wherein：
The reflector, including outer toroid 1, centre strut 3 fasten rope 8, wire side rope 9, hauling rope 10 and multiple supporting cables
12.Wherein：
Outer toroid 1 is made of the hollow circular-tube 16 of a plurality of radial bores, the connection of a plurality of connecting joints 17, by changing
The quantity and length that become hollow circular-tube 16 can change the bore of outer toroid 1, i.e. the design bore of reflector, hollow circular-tube 16
Pin 11a and lower pin 11b are installed, the quantity of this example hollow circular-tube 16 is 48, reflector mouth in radial hole
Diameter is 5m, which is equipped with uniformly distributed connecting pin, this example is upper and lower each 12 connecting pins, and pin is equipped with and opens
Hole, as shown in Figure 3.
Rope 8, wire side rope 9 are fastened, 10 three of hauling rope forms flexible cable net group, and wire side rope 9 is equipped with metallized film or gold
Belong to silk screen reflecting surface, for reflection electromagnetic wave or convergence solar energy；Is equipped between pin 11a on newel 3 and outer toroid 1
One layer of criss-cross flexible wire side rope 9；It is criss-cross that the second layer is installed between pin 11b on centre strut 3 and outer toroid 1
Flexible fastener rope 8, wire side rope 9 and fastening rope 8 between longitudinal traction rope 10 is installed, pass through adjust longitudinal traction rope 10 control
The deformation of wire side rope 9, to change reflector shape；
Centre strut 3 which is provided with upper and lower two rows of connecting holes, and the every row of this example is six connecting holes, and heat collector 2 is installed
At the top of centre strut 3；
Supporting cables 12 are made of more flexible ropes, and number is the multiple for taking three, i.e., flexible rope number is 6,9,12
Deng these flexible ropes are linked together centre strut 3 with outer toroid 1 by way of being cross-linked, i.e. every flexible strand
One end of rope is connected on the connecting hole of centre strut 3, and the other end is connected in the connecting pin nail hole of the outer toroid 1；This friendship
Mistake connection can obtain the good triangular structure of stability, provide torque for outer toroid 1 and centre strut 3, make the base of reflector
Frequency is got higher, and stabilized structure avoids relatively rotating between outer toroid 1 and centre strut 3, and guarantees that centre strut 3 is located at mouth
The center of diameter.
The centre strut 3 is cross-linked with supporting cables 12, and there are two types of types of attachment, this example is using the first connection
Form, i.e. connecting pin are connected between the upper and lower connecting hole of centre strut 3 by forward and backward six roots of sensation flexible rope antisymmetry respectively
It connects.
Referring to Fig. 5, the upper row's connecting hole and the upper connecting pin in outer toroid 1 of centre strut 3 pass through the first six every one
The connection of root flexible rope antisymmetry, i.e. first flexible rope connect the arranged on first upper pin hole u1 and centre strut 3
12 connecting hole u12；Second flexible rope connects the 7th arranged on the 6th upper pin hole u6 and centre strut 3 and connect
u7；Third root flexible rope connects the 9th connecting hole u9 arranged on second upper pin hole u2 and centre strut 3；4th soft
Property the upper pin hole u3 of rope connection third and centre strut 3 on the 8th connecting hole u8 arranging；5th flexible rope connection
4th is gone up the 11st connecting hole u11 arranged on pin hole u4 and centre strut 3；Six roots of sensation flexible rope connects on the 5th
The tenth connecting hole u10 arranged on pin hole u5 and centre strut 3.
Referring to Fig. 6, pass through rear six roots of sensation flexible strand between the lower pin on the lower row's connecting hole and outer toroid 1 of centre strut 3
The connection of rope antisymmetry, i.e. first flexible rope connect the 1st lower pin hole d1 and lower the 8th connecting hole arranged of centre strut 3
d8；Second flexible rope connects the 2nd lower pin hole d2 and the lower of centre strut 3 arranges the 7th connecting hole d7；Third root is flexible
Rope connects the 3rd lower pin hole d3 and lower the 10th connecting hole d10 arranged of centre strut 3；4th flexible rope connection the 4th
A lower pin hole d4 and lower the 9th connecting hole d9 arranged of centre strut 3；5th flexible rope connects the 5th lower pin hole d5
With lower the 12nd connecting hole d12 arranged of centre strut 3；Six roots of sensation flexible rope connects the 6th lower pin hole d6 and centre strut 3
The 11st connecting hole d11 of lower row.
Referring to Fig. 4, the tracker, including linear expansion device 4 fix support rod 5, rotatable platform 6 and support frame 7,
Linear expansion device 4 is connected with upper mounting plate 13, lower rotatable platform 6 respectively by the first revolute pair R1 and the second revolute pair R2；Gu
The lower end for determining support rod 5 is fixed on lower rotatable platform 6, and upper end is connected by third revolute pair R3 with upper mounting plate 13；It is mobile
The upper end of secondary P is connect by the first revolute pair R1 with upper mounting plate 13, and lower end is connected by the second revolute pair R2 and lower rotatable platform 6
It connects；It is placement of looking up to heaven under original state, i.e. the outer toroid 1 of reflecting system is parallel with lower rotatable platform 6, according to job requirement, adjusts
The length of straightening line telescopic device 4 makes upper mounting plate tracking pitch angle variation；The rotation of lower rotatable platform 6 tracks orientation angles,
Meet the pose of system requirements.
Embodiment 2：Reflector bore is the annulated column type rope net reflecting system of 15m.
The present embodiment includes reflector and tracker two parts, and reflector bore is 15m, tracker structure and embodiment 1
Identical, the structure type of reflector is same as Example 1, but structural parameters are different, i.e.,：
The supporting cables 12 of this example are made of forward and backward each 12 flexible ropes；Centre strut 3 which is provided with upper and lower
Two rows of connecting holes, the quantity of every row's connecting hole are six.
Centre strut 3 is staggeredly symmetrically connect with supporting cables 12, using second of type of attachment；I.e. centre strut 3 is upper and lower
Row's connecting hole is symmetrically connect between the connecting pin in outer toroid 1 by forward and backward 12 flexible ropes respectively.
Referring to Fig. 7, pass through first 12 between the upper connecting pin on the upper row's connecting hole and outer toroid 1 of centre strut 3
Flexible rope symmetrically connects, i.e. first flexible rope connects the 13rd arranged on first upper pin hole u1 and centre strut 3
A connecting hole u13；Second flexible rope connects the 18th connecting hole arranged on second upper pin hole u2 and centre strut 3
u18；Third root flexible rope connects the 14th connecting hole u14 arranged on the upper pin hole u3 of third and centre strut 3；4th
Root flexible rope connects the 13rd connecting hole u13 arranged on the 4th upper pin hole u4 and centre strut 3；5th flexible strand
Rope connects the 15th connecting hole u15 arranged on the 5th upper pin hole u5 and centre strut 3；Six roots of sensation flexible rope connection the
Six are gone up the 16th connecting hole u16 arranged on pin hole u6 and centre strut 3；7th flexible rope connects the 7th upper pin
The 16th connecting hole u16 arranged on nail hole u7 and centre strut 3；8th flexible rope connect the 8th upper pin hole u8 with
The 15th connecting hole u15 arranged on centre strut 3；9th flexible rope connects the 9th upper pin hole u9 and centre strut
The 17th connecting hole u17 arranged on 3；Tenth flexible rope, which connects, to be arranged on the tenth upper pin hole u10 and centre strut 3
16th connecting hole u16；Tenth flexible rope connects the arranged on the 11st upper pin hole u11 and centre strut 3
16 connecting hole u16；12nd flexible rope connects the tenth arranged on the 12nd upper pin hole u12 and centre strut 3
Seven connecting hole u17.
Referring to Fig. 8, connection type is in second：Lower connecting pin on lower row's connecting hole of centre strut 3 and outer toroid 1
It is symmetrically connected between the connecting hole of nail by rear 12 flexible ropes, i.e., first flexible rope connects first lower pin hole d1
With lower the 13rd connecting hole d13 arranged of centre strut 3, second flexible rope connects second lower pin hole d2 and center branch
Lower the 18th connecting hole d18 arranged of column 3, the lower pin hole d3 of third root flexible rope connection third and the lower row of centre strut 3
The 14th connecting hole d14, the 4th flexible rope connect lower the 13rd arranged of the 4th lower pin hole d4 and centre strut 3
A connecting hole d13, the 5th flexible rope connect the 5th lower pin hole d5 and lower the 15th connecting hole arranged of centre strut 3
D15, six roots of sensation flexible rope connect lower the 16th connecting hole d16 arranged of the 6th lower pin hole d6 and centre strut 3, and the 7th
Root flexible rope connects the 7th lower pin hole d7 and lower the 16th connecting hole d16 arranged of centre strut 3, the 8th flexible strand
Rope connects lower the 15th connecting hole d15 arranged of the 8th lower pin hole d8 and centre strut 3, the 9th flexible rope connection the
Nine lower pin hole d9 and lower the 17th connecting hole d17 arranged of centre strut 3, the tenth flexible rope connects to be sold under the tenth
Nail hole d10 and lower the 16th connecting hole d16 arranged of centre strut 3, the tenth flexible rope connect the 11st lower pin
Hole d11 and lower the 16th connecting hole d16 arranged of centre strut 3, the 12nd flexible rope connect the 11st lower pin hole
D12 and lower the 17th connecting hole d17 arranged of centre strut 3.
Effect of the invention is further illustrated by following emulation：
Emulation 1, the reflector for being 5m to 1 bore of embodiment, the emulation of carry out type face precision when agravic.
1.1) analogue system and structure
Reflector bore 5m, burnt diameter is than 0.4,48 equal part of ring, radial 8 equal parts of reflecting surface rope net, the open circles of outer toroid
Pipe outside diameter is 0.006m, internal diameter 0.005m, height of pin 0.016m.Centre strut outer diameter 0.05m, height 1.8m, round bar
Outer diameter is 0.01m, internal diameter 0.006m.In addition to each 6 supporting cables outer diameters are 0.0003m up and down, other flexible cable outer diameters are
0.0002m.All rigid bars select carbon fibre material, and flexible cable net selects kevlar fiber material.Reflecting surface film thickness
20 μm, using aramid fiber film of aluminizing.
1.2) emulation content
Above-mentioned reflector is placed in initial position, 3 supporting points that constraint newel is centrosymmetric, in agravic work
Under, standing balance emulation is carried out to the structure of 5m reflector under null-gravity state, obtains Aberration nephogram, as shown in figure 9, its
In, different colors indicates different displacement structure variations in Fig. 9；It can be seen in figure 9 that in weightless situation, it is anti-
The maximum distortion of emitter is 0.031692m.
It is 1.711Hz that reflecting system structure fundamental frequency, which is obtained by calculation, and reflecting system rigid backbone quality is 1.767Kg,
Flexible cable net quality is 0.022Kg, reflecting surface film 0.611Kg, reflecting system gross mass 2.401Kg；
The surface Root Mean Square error RMS=1.665mm of reflecting surface is obtained by calculation.
Emulation 2, to the reflector that 1 bore of embodiment is 5m position of the looking up to heaven when carry out type face precision that has gravity emulation.
The structural parameters of emulation are identical as emulation 1, reflector placed in position of looking up to heaven, constraint newel is centrosymmetric
3 supporting points, under the effect of gravity, to reflector structure carry out standing balance emulation, the results are shown in Figure 10, wherein figure
Different colors indicates different displacement structure variations in 10；It can be seen from fig. 10 that the maximum distortion of its reflector is
0.0311692m。
By the surface Root Mean Square error RMS=2.125mm for calculating available reflecting surface.
Emulation 3, type face precision simulation of the reflector in the case where pitch angle is 60 degree of operating conditions for being 5m to 1 bore of embodiment.
The structural parameters of emulation are identical as emulation 1, and by reflector in 60 degree of pitch angle placements, constraint newel is in center pair
3 supporting points claimed carry out standing balance emulation to reflector structure, as a result as shown in figure 11 under the effect of gravity, wherein
Different colors indicates different displacement structure variations in Figure 11；It can be seen from fig. 11 that the maximum distortion of its reflector is
0.032909m。
The surface Root Mean Square error RMS=2.893mm of reflecting surface is obtained by calculation.
Emulation 4 carries out static analysis to the reflector structure that 2 bore of embodiment is 15m.
4.1) analogue system and structure
The reflector bore is 15m, and for burnt diameter than 0.4, ring is divided into 48 equal parts, radial 8 equal parts of reflecting surface rope net, outer toroid
Hollow circular-tube outer diameter is 0.016m, internal diameter 0.015m, height of pin 0.032m.Centre strut outer diameter is 0.7m, is highly 5m,
Its round bar outer diameter is 0.036m, internal diameter 0.030m.In addition to each 6 supporting cables outer diameters are 0.0006m up and down, outside other flexible cables
Diameter is 0.0003m.All rigid bars select carbon fibre material, and flexible cable net selects kevlar fiber material.Reflecting surface is thin
20 μm of film thickness, using aramid fiber film of aluminizing.
4.2) emulation content
Above-mentioned reflector is placed in initial position, 3 supporting points that constraint newel is centrosymmetric, in agravic work
Under, standing balance emulation is carried out to the structure of 15m reflector under null-gravity state, obtains Aberration nephogram, as shown in figure 12,
In, different colors indicates different displacement structure variations in Figure 12；In figure 12 it can be seen that in weightless situation,
The maximum distortion of reflector is 0.111103m.
It is 1.711Hz by calculating reflecting system structure fundamental frequency, reflecting system rigid backbone quality is 1.767Kg, flexible
Rope net quality is 0.022Kg, reflecting surface film 0.611Kg, reflecting system gross mass 2.401Kg, the surface Root Mean Square of reflecting surface
Error RMS=1.665mm.
Emulation 5, to the reflector that 2 bore of embodiment is 15m position of the looking up to heaven when carry out type face precision that has gravity emulation.
The structural parameters of emulation are identical as emulation 4, reflector placed in position of looking up to heaven, constraint newel is centrosymmetric
3 supporting points, under the effect of gravity, to reflector structure carry out standing balance emulation, as a result as shown in figure 13, wherein figure
Different colors indicates different displacement structure variations in 13；It can be observed from fig. 13 that the maximum distortion of its reflector is
0.10606m。
By the surface Root Mean Square error RMS=2.125mm for calculating available reflecting surface.
Emulation 6, type face precision simulation of the reflector in the case where pitch angle is 60 degree of operating conditions for being 15m to 2 bore of embodiment.
The structural parameters of emulation are identical as emulation 6, are 60 degree in pitch angle for reflector and place, and constraint newel is in center
Symmetrical 3 supporting points carry out standing balance emulation to reflector structure under the effect of gravity, as a result as shown in figure 14,
In, different colors indicates different displacement structure variations in Figure 14；As can be seen from Figure 14, the maximum distortion of reflector
For 0.121996m.
By calculating available mirror surface root-mean-square error RMS=8.040mm.
Above-mentioned emulation statistics indicate that, if the reflecting surface be used for microwave communication, can work in L, S-band.If considering wind
The equiprobable external load of rain can suitably increase the stiffness of rigid element, and then suitably increase the quality of reflector system.I.e.
Make in this way, the surface density of entire reflector system is made to be less than 2.0Kg/m2。
Embodiments above described herein is only to of the invention for example, not constituting to the present invention
Limitation.Obviously, those skilled in the art can do described specific embodiment various
The similar mode of modify or supplement or adopt substitutes, and however, it does not deviate from the spirit of the invention or surmounts the appended claims
Defined range.Such as this example has used the terms such as telescopic rod, hauling rope, wire side rope, fastening rope, but use is not precluded
A possibility that other terms.The use of these items is only for being more convenient to describe and explain essence of the invention, if it
To be construed to any additional limitation disagreed with spirit of that invention, it is this without departing substantially from the principle of the invention, knot
In the case where structure, form or various modifications and change in details are carried out, still within the scope of the claims of the present invention.
Claims (5)
1. a kind of annulated column type rope net reflecting system of list telescopic rod turntable driving, including reflector and tracker,
The reflector, including outer toroid (1), centre strut (3)；It fastens rope (8), wire side rope (9), hauling rope (10) and support
Rope (12)；It fastens rope (8), wire side rope (9) and hauling rope (10) three and forms flexible cable net, the top installation of centre strut (3)
There are feed or heat collector (2)；
The tracker, including linear expansion device (4), fixed support rod (5), lower rotatable platform (6), support frame (7) are upper flat
Platform (13), elevation servo motor (14) and bearing servo motor (15) are equipped with prismatic pair (P) and two on linear expansion device
Revolute pair (R1, R2), fixed support rod (5) are equipped with third revolute pair (R3)；
It is characterized in that：
Linear expansion device (4) in tracker by the first revolute pair (R1) and the second revolute pair (R2) respectively with upper mounting plate
(13), lower rotatable platform (6) is connected；The lower end of fixed support rod (5) is fixed on lower rotatable platform (6), and upper end passes through third
A revolute pair (R3) is connected with upper mounting plate (13)；The upper end of prismatic pair (P) is connected by the first revolute pair (R1) and upper mounting plate (13)
It connects, lower end is connect by the second revolute pair (R2) with lower rotatable platform (6)；
Outer toroid (1) in reflector is connected by the hollow circular-tube (16) of a plurality of radial bores, a plurality of connecting joints (17)
Composition；It is equipped in radial hole upper and lower pin (11a, 11b), wire side rope (9) is connected by upper pin (11a) and centre strut (3)
It connects, fastening rope (8) is connect by lower pin (11b) with centre strut (3), and supporting cables (12) pass through upper and lower pin (11a, 11b)
It is connect with centre strut (3)；It is connect between centre strut (3) and supporting cables (12) by the mode of interlocking, connection number is to take
Three multiple avoids occurring between outer circle endless tube (1) and centre strut (3) opposite to obtain the good triangular structure of stability
Rotation；
Wire side rope (9) in reflector, is made of the criss-cross net that more flexible ropes are made into, and is mounted on pin (11a)
Between centre strut (3), bound thereon to reflection electromagnetic wave wire mesh, or flexible plating of the binding to converge sunlight
Metallic film forms first layer wire side；
Hauling rope (10) in reflector, is made of, the two of every retractable and flexible rope more retractable and flexible ropes
End is connected with wire side rope (9) and the corresponding rope node of fastening rope (8) respectively, passes through the length control net for adjusting hauling rope (10)
The deformation of face rope (9), makes the shape of reflecting surface change；
Fastening rope (8) in reflector, is made of the criss-cross net that more flexible ropes are made into, is mounted on lower pin
Between (11b) and centre strut (3), second layer wire side is formed.
2. system according to claim 1, it is characterised in that：Upper mounting plate (13) uses fashioned iron or circular configuration, lower rotation
Platform (6) is using round or triangular structure, the upper and lower platform parallel installation.
3. system according to claim 1, it is characterised in that elevation servo motor (14) and driving straight line in tracker
Telescopic device (4) connection drives upper mounting plate (13) to complete pitch angle tracking, bearing servo motor (15) and lower rotatable platform
(6) it connects, is rotated by platform (6) and completes orientation angles tracking.
4. system according to claim 1, it is characterised in that wire side rope (9), hauling rope (10), fastening rope (8) and support
Rope (12) is all made of the high-intensitive soft material of Kev bracing wire.
5. system according to claim 1, it is characterised in that outer ring endless tube (1), centre strut (3) and linear expansion dress
(4) are set, high-intensitive carbon fiber pipe lightweight material is all made of.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610517246.5A CN106054932B (en) | 2016-07-04 | 2016-07-04 | The annulated column type rope net reflecting system of single telescopic rod turntable driving |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610517246.5A CN106054932B (en) | 2016-07-04 | 2016-07-04 | The annulated column type rope net reflecting system of single telescopic rod turntable driving |
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| CN106054932A CN106054932A (en) | 2016-10-26 |
| CN106054932B true CN106054932B (en) | 2018-11-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107943107B (en) * | 2017-11-17 | 2019-10-25 | 西安电子科技大学 | A kind of tracking reflector system of double rod support cable traction |
| CN109119741A (en) * | 2018-09-29 | 2019-01-01 | 中国科学院国家天文台 | A kind of complete movable huge radio telescope |
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