CN201345424Y - Antenna device capable of automatically adjusting reflecting plane thermal deformation - Google Patents
Antenna device capable of automatically adjusting reflecting plane thermal deformation Download PDFInfo
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- CN201345424Y CN201345424Y CNU200920101509XU CN200920101509U CN201345424Y CN 201345424 Y CN201345424 Y CN 201345424Y CN U200920101509X U CNU200920101509X U CN U200920101509XU CN 200920101509 U CN200920101509 U CN 200920101509U CN 201345424 Y CN201345424 Y CN 201345424Y
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Abstract
The utility model discloses an antenna device capable of automatically adjusting reflecting plane thermal deformation which relates to the construction of an antenna component capable of automatically adjusting the reflecting plane thermal deformation. The thermal deformation antenna device comprises a single-free-degree adjusting component, a double-free-degree adjusting component, an antenna reflecting plane unit, a reflecting plane back frame and other components. The principles of thermal deformation automatic adjustment are carried out through combining the single-free-degree adjusting component with the double-free-degree adjusting component, so as to realize the self-adaptation of thermal deformation between the reflecting plane and the back frame with different materials. The antenna device has the characteristics of simple structure, light weight, easy process, convenient adjustment, stable and reliable properties, low price cost and the like, and is particularly suitable for manufacturing the reflecting plane antennas in various forms of greater than 25m antenna caliber, over 50 DEG C working environmental temperature difference and over Ka frequency band of the operating frequency used as adjusting components of a main reflecting plane and an auxiliary reflecting plane with high-precision.
Description
Technical field
The present invention relates to a kind of antenna assembly in the reflector antenna field with the thermal deformation of automatic adjusting antenna reflective face, be specially adapted to heavy caliber, big temperature difference operational environment, be operated in high band, especially antenna aperture greater than 25 meters, the operational environment temperature difference more than 50 ℃, the various forms of reflector antennas of operating frequency more than the Ka frequency range make as the adjustment assembly of the major and minor reflecting surface of high accuracy.
Background technology
Along with operating frequency of antenna is more and more higher, to reflector precision (describing with surperficial root-mean-square value σ usually) require corresponding more and more higher, among the factors that influence reflector precision σ, except manufacturing and mounting technology, the influence of operational environment is the factor that can not be ignored, especially antenna aperture is greater than 25 meters, operating frequency is more than the Ka frequency range, various forms of heavy calibers, the high accuracy reflector antenna, environmental factor shows especially the influence of reflector precision σ, particularly the influence of the big temperature difference heat factor of environment is particularly outstanding, up to now, industry does not also have feasible technology precedent to how eliminating or effectively reduce the influence of hot factor in big temperature difference environment.At present, open-air atmosphere is operated in the reflecting surface of the heavy caliber reflector antenna of each frequency range, with the syndeton design aspect of antenna back frame, all be to adopt traditional technical scheme to design, the particularly design of the adjustment coupling assembling between steel back of the body frame and aluminium reflecting surface, all adopt such as the direct hardwired method of assemblies such as screw rod, there is following deficiency in this method of attachment on the hot property of structure:
Traditional adjustment coupling assembling method, be between four bights and antenna back frame of every reflecting surface unit forming antenna reflective face, directly be rigidly connected with standard components such as four groups of screw rods, nuts respectively, though this method of attachment can be satisfied the installation and the adjustment of every reflecting surface unit, but but can not coordinate steel and carry on the back the distortion difference that causes owing to steel, aluminium different materials coefficient of linear expansion between frame and the aluminium reflecting surface unit, thereby cause the deterioration of reflecting surface integral surface precision σ, formed the key technology weakness of heavy caliber high accuracy reflecting surface.This is because have three in the thermal deformation factor that antenna-reflected surface accuracy σ is exerted an influence, that is:
A. the thermal deformation factor of antenna back frame;
B. the thermal deformation factor of reflecting surface unit;
C. carry on the back frame and reflecting surface unlike material, under traditional constraint that is rigidly connected, the inharmonious factor of the distortion of generation.
Theoretical and result of calculation shows, though preceding two factors can not artificially be controlled, but because the material of itself is same, thermal deformation is more even, so it is little to the influence of the overall precision σ of reflecting surface, do not constitute principal element, and in a back factor, because back of the body frame is different with the material of reflecting surface unit, line of material coefficient of expansion difference, but the rigid connection method that is adopted between the two makes the distortion of the aluminium matter reflecting surface unit that rigidity is more weak relatively yield to the stronger relatively steel back of the body frame distortion of rigidity, thereby causes the deterioration of reflector precision σ.This factor is not only fairly obvious to reflector precision σ influence, can constitute principal element, must be controlled in the mill.
The purpose of this utility model is to avoid the weak point in the above-mentioned background technology and a kind of antenna assembly with the thermal deformation of automatic adjusting antenna reflective face is provided, and reflecting face regulation component device of the present utility model not only is applicable to the unit adjustment of heavy caliber, big temperature difference operational environment and high-precision reflector antenna, but also has simple, in light weight, the easy processing of the modular construction of adjustment, easy to adjust, characteristics such as Costco Wholesale is cheap, and is stable and reliable for performance.
The purpose of this utility model is achieved in that
It comprises the single-degree-of-freedom adjustment part 1 that is made of single-degree-of-freedom adjustment seat 2, adjustment screw rod 3, single-degree-of-freedom axle 5, little standard component 6 the utility model, by double freedom adjustment seat 8, adjust the double freedom adjustment part 7 that screw rod 3, double freedom axle 9, little standard component 6 constitute, antenna reflective face unit 10, reflecting surface back of the body frame 11;
Described adjustment screw rod 3 is installed in the inside and outside arm room that single-degree-of-freedom is adjusted seat 2 by single-degree-of-freedom axle 5, the little standard component 6 of employing, is assembled into single-degree-of-freedom adjustment part 1;
Described adjustment screw rod 3 is installed in the inside and outside arm room that double freedom is adjusted seat 8 by double freedom axle 9, the little standard component 6 of employing, is assembled into double freedom adjustment part 7;
Two cover single-degree-of-freedom adjustment parts 1 are installed in respectively in two of reflecting surface unit 10 non-working surfaces and adjust on the point, make the axis of single-degree-of-freedom axle 5 consistent with the radial direction of antenna reflective face;
Two cover double freedom adjustment parts 7 are installed in respectively on two investigation mission outside the city or town integral points of reflecting surface unit 10 non-working surfaces, make the axis of double freedom axle 9 consistent with the radial direction of antenna reflective face;
The reflecting surface unit 10 that adopts big standard component 4 that single-degree-of-freedom adjustment part 1 and double freedom adjustment part 7 will be installed is installed on the adjustment plate of antenna back frame 11 relevant positions by adjusting screw rod 3;
Adopt big standard component 4 to adjust the height of the adjustment screw rod 3 of the height of adjustment screw rod 3 of single-degree-of-freedom adjustment part 1 and double freedom adjustment part 7 respectively, make 10 positions, reflecting surface unit satisfy installation requirement; Promptly form the temperature adaptive reflecting surface regulating component of reflecting surface unit behind the locking standard component 4.
The utility model double freedom is adjusted the difference DELTA L sum of the inside and outside support arm spacing dimension a of seat 8 for mating holes length dimension b and reflecting surface unit 10 and antenna back frame 11 heat distortion amount under the work temperature difference of adjustment screw rod 3, be a=b+ Δ L, in the formula: Δ L=L * Δ t (α
1-α
2), wherein:
L is the radially nominal dimension of reflecting surface unit, and unit is a millimeter
Δ t is the work temperature difference, and unit is ℃
α
1Be the line of material coefficient of expansion of reflecting surface unit, unit is 10
-6℃
-1
α
2Be the line of material coefficient of expansion of back of the body frame, unit is 10
-6℃
-1
The utility model adjustment screw rod 3 to the distance of the interior support arm of double freedom adjustment seat 8 is L
1, the distance of adjusting screw rod 3 support arm to double freedom adjustment seat 8 is L
2, L
1/ L
2Ambient temperature when adjusting with reflecting surface unit 10 is relevant, satisfies following formula: L
1/ L
2=Δ t
2/ Δ t
1, in the formula:
L
1Adjust the distance of the interior support arm of seat 8 for adjusting screw rod 3 to double freedom, unit is a millimeter
L
2Adjust the distance of the outer support arm of seat 8 for adjusting screw rod 3 to double freedom, unit is a millimeter
Δ t
1=t-t
1, Δ t
2=t
2-t, the ambient temperature when t is adjustment, t
1To t
2Be circumstance of temperature difference, unit is ℃.
The reflecting surface unit 10 that adopts big standard component 4 that single-degree-of-freedom adjustment part 1 and double freedom adjustment part 7 will be installed is installed on the adjustment plate of antenna back frame 11 relevant positions by adjusting screw rod 3.
Adopt big standard component 4 to adjust the height of the adjustment screw rod 3 of the height of adjustment screw rod 3 of single-degree-of-freedom adjustment part 1 and double freedom adjustment part 7 respectively, make 10 positions, reflecting surface unit satisfy installation requirement; Promptly form the antenna assembly of the automatic adjusting antenna reflective face of having of reflecting surface unit thermal deformation behind the locking standard component 4.
The utility model single-degree-of-freedom adjustment seat 2, all adopt aluminium or stainless steel manufacturing by double freedom adjustment seat 8, adjust screw rod 3, single-degree-of-freedom axle 5, double freedom axle 9, all adopt the stainless steel manufacturing, little standard component 6, big standard component 4 all adopt the manufacturing of commercially available stainless steel 1Cr18Ni9Ti standard component.
The utility model is compared with background technology has following advantage:
1. the utility model has overcome the deficiency of large-scale antenna reflecting plane unit with tradition adjustment coupling assembling rigid connection method, adopted antenna assembly syndeton form with the thermal deformation of automatic adjusting antenna reflective face, the reflecting surface unit relies on rigidity to be installed in that back of the body frame is adjusted the single-degree-of-freedom adjustment part 1 of close antenna reflective face center one side on the plate and away from the synergy of the double freedom adjustment part 7 of antenna reflective face center one side, can be reliably fixing exactly, be adjusted at the back of the body and set up the meter position, again can be when variation of ambient temperature, utilize double freedom adjustment part 7 to eliminate well between back of the body frame and the reflecting surface unit because steel in the radial direction displacement degree of freedom, aluminium different materials coefficient of linear expansion and the distortion difference that causes at radial direction, utilize single each adjustment part to coordinate preferably to carry on the back between frame and the reflecting surface unit because steel at the rotational freedom of circumferencial direction, aluminium different materials coefficient of linear expansion and the distortion difference that causes at circumferencial direction, thereby the deterioration degree that guarantees reflecting surface integral surface precision σ reduces greatly, for heavy caliber, the effect of big temperature difference operational environment and high-precision reflector antenna is particularly remarkable.
2. the utility model is to remove the displacement constraint of investigation mission outside the city or town integral point at the antenna reflective face radial direction, remove the rotational restraint of inside and outside adjustment point at the antenna reflective face circumferencial direction, realize that the reflecting surface of unlike material and the thermal deformation between the back of the body frame adapt to voluntarily, each adjustment part only comprises adjusts seat, adjustment screw rod and three constitutional details of axle.Have processing simple in structure, in light weight, easy, characteristics such as easy to adjust, particularly stable and reliable for performance, Costco Wholesale is cheap, also is remarkable advantage of the present invention.
Description of drawings
Fig. 1 is the mounting structure schematic diagram of most preferred embodiment of the present invention.
Fig. 1-the 1st, the scheme of installation of the utility model single-degree-of-freedom adjustment part 1, double freedom adjustment part 7.
Fig. 1-2 is the structure for amplifying schematic diagram of the single-degree-of-freedom adjustment part 1 of II among the utility model Fig. 1-1.
Fig. 1-the 3rd, the structure for amplifying schematic diagram of the double freedom adjustment part 7 of III among utility model bright Fig. 1-1.
Fig. 2 is the assembly relation structural representation of the single, double degree of freedom adjustment part 1,7 of the utility model.
Fig. 2-the 1st, the assembly relation structural representation of the utility model single-degree-of-freedom adjustment part 1.
Fig. 2-the 2nd, the assembly relation structural representation of the utility model double freedom adjustment part 7.
Fig. 3 is the installation site schematic diagram of the single, double degree of freedom adjustment part 1,7 of the utility model on reflecting surface unit 10.
Among Fig. 1, Fig. 2, Fig. 3: 1 be the single-degree-of-freedom adjustment part, 2 for single-degree-of-freedom adjust seat, 3 for adjust screw rod, 4 for big standard component, 5 for the single-degree-of-freedom axle, 6 for little standard component, 7 for the double freedom adjustment part, 8 for double freedom adjust seat, 9 for the double freedom axle, 10 for reflecting surface unit, 11 be antenna back frame.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, utility model employing single-degree-of-freedom adjustment part 1 and double freedom adjustment part 7 combine and carry out the self-regulating principle of thermal deformation, single-degree-of-freedom adjustment part 1 has been determined the relative position of structure between reflecting surface unit 10 and the back of the body frame 11, double freedom adjustment part 7 is removed the displacement constraint of investigation mission outside the city or town integral point at the antenna reflective face radial direction, make reflecting surface unit 10 adapt to temperature deformation in the radial direction displacement, single, double freedom adjustment part 1, in 7 combinations are removed, the investigation mission outside the city or town integral point is at the rotational restraint of antenna reflective face circumferencial direction, reflecting surface unit 10 is rotated at circumferencial direction adapt to temperature deformation, realized that the reflecting surface of unlike material and the thermal deformation between the back of the body frame adapt to voluntarily.
The single-degree-of-freedom adjustment part 1 that the utility model is made of single-degree-of-freedom adjustment seat 2, adjustment screw rod 3, single-degree-of-freedom axle 5, little standard component 6, by double freedom adjustment seat 8, adjust the double freedom adjustment part 7 that screw rod 3, double freedom axle 9, little standard component 6 constitute, antenna reflective face unit 10, reflecting surface back of the body frame 11 is formed, as shown in Figure 1, Fig. 1 is the mounting structure schematic diagram of most preferred embodiment of the present invention.Fig. 1-the 1st, the scheme of installation of the utility model single-degree-of-freedom adjustment part 1, double freedom adjustment part 7.Fig. 1-2 is the structure for amplifying schematic diagram of the single-degree-of-freedom adjustment part 1 of II among the utility model Fig. 1-1.Fig. 1-the 3rd, the structure for amplifying schematic diagram of the double freedom adjustment part 7 of III among utility model bright Fig. 1-1.
Described adjustment screw rod 3 is installed in the inside and outside arm room that single-degree-of-freedom is adjusted seat 2 by single-degree-of-freedom axle 5, the little standard component 6 of employing, is assembled into single-degree-of-freedom adjustment part 1, shown in Fig. 2-1.1 effect of single-degree-of-freedom adjustment part is a relative position of having determined structure between reflecting surface and the back of the body frame, remove the rotational restraint of inside and outside adjustment point simultaneously at the antenna reflective face circumferencial direction, reflecting surface is rotated at circumferencial direction adapt to temperature deformation, realized that the reflecting surface of unlike material and the thermal deformation between the back of the body frame adapt to voluntarily.Embodiment adjusts screw rod 3, single-degree-of-freedom axle 5 adopts the stainless steel material machine work to form, and little standard component 6 adopts the manufacturing of commercially available stainless steel standard part, and single-degree-of-freedom adjustment seat 2 adopts aluminum material to be machined to U type structure.
Described adjustment screw rod 3 is installed in the inside and outside arm room that double freedom is adjusted seat 8 by double freedom axle 9, the little standard component 6 of employing, is assembled into double freedom adjustment part 7, shown in Fig. 2-2.7 effects of double freedom adjustment part are to remove the displacement constraint of investigation mission outside the city or town integral point at the antenna reflective face radial direction, make reflecting surface unit 10 adapt to temperature deformation in the radial direction displacement, remove the rotational restraint of inside and outside adjustment point simultaneously at the antenna reflective face circumferencial direction, reflecting surface is rotated at circumferencial direction adapt to temperature deformation, realized that the reflecting surface of unlike material and the thermal deformation between the back of the body frame adapt to voluntarily.Embodiment adjusts screw rod 3, double freedom axle 9 adopts the stainless steel material machine work to form, and little standard component 6 adopts the manufacturing of commercially available stainless steel standard part, and double freedom adjustment seat 8 adopts aluminum material to be machined to U type structure.
Adopt No. 133 gluing connecing to adjust in two that are installed in reflecting surface unit 10 non-working surfaces on the point respectively two cover single-degree-of-freedom adjustment parts 1, make the axis of single-degree-of-freedom axle 5 consistent with the radial direction of antenna reflective face, embodiment installs as shown in Figure 3.
Two cover double freedom adjustment parts 7 are adopted gluing connecing on two investigation mission outside the city or town integral points that are installed in reflecting surface unit 10 non-working surfaces respectively No. 133, make the axis of double freedom axle 9 consistent with the radial direction of antenna reflective face, embodiment installs as shown in Figure 3.
The reflecting surface unit 10 that adopts big standard component 4 that single-degree-of-freedom adjustment part 1 and double freedom adjustment part 7 will be installed is installed on the adjustment plate of antenna back frame 11 relevant positions by adjusting screw rod 3, and embodiment installs as Figure 1-1.
Adopt big standard component 4 to adjust the height of the adjustment screw rod 3 of the height of adjustment screw rod 3 of single-degree-of-freedom adjustment part 1 and double freedom adjustment part 7 respectively, make 10 positions, reflecting surface unit satisfy installation requirement, embodiment installs as Fig. 1-2, as Figure 1-3; Lock the temperature adaptive reflecting surface regulating component that promptly forms reflecting surface unit 10 behind the big standard component 4.Embodiment reflecting surface unit 10 adopts the aluminum alloy materials manufacturing, and polylith reflecting surface unit 10 is assembled into antenna reflective face.Antenna back frame 11 adopts steel pipe to manufacture the grid type back frame structure.Big standard component 4 adopts the manufacturing of commercially available stainless steel standard part.
The utility model double freedom is adjusted the difference DELTA L sum of the inside and outside support arm spacing dimension a of seat 8 for mating holes length dimension b and reflecting surface unit 10 and antenna back frame 11 heat distortion amount under the work temperature difference of adjustment screw rod 3, be a=b+ Δ L, in the formula: Δ L=L * Δ t (α
1-α
2), wherein:
L is the radially nominal dimension of reflecting surface unit, and unit is a millimeter
Δ t is the work temperature difference, and unit is ℃
α
1Be the line of material coefficient of expansion of reflecting surface unit, unit is 10
-6℃
-1
α
2Be the line of material coefficient of expansion of back of the body frame, unit is 10
-6℃
-1
Embodiment L gets 2300 millimeters, and Δ t gets 60 ℃, the α of aluminium matter reflecting surface
1Get 23.0 * 10
-6℃
-1, the α of steel back of the body frame
2Get 11.0 * 10
-6℃
-1
So Δ L=L * Δ t (α
1-α
2)
＝2300×60×(23.0×10
-6-11.0×10
-6)
=1.656 millimeters.
In other words, in 60 ℃ temperature range, length is 2300 millimeters reflectings surface in the thermal deformation difference of the thermal deformation of antenna reflective face radial direction and back of the body frame is 1.656 millimeters, when making double freedom and adjust the inside and outside support arm spacing dimension a of seat 8, reserve 1.656 mm clearance.
The mating holes length b that adjusts screw rod 3 gets 10 millimeters, and double freedom is adjusted the arm room of seat 8 apart from a=b+ Δ L
So a=b+ Δ L
＝10+1.656
=11.656 millimeters.
Double freedom is adjusted the size of the arm room of seat 8 apart from a, satisfy 10 millimeters of mating holes length adjusting screw rod 3 with in 60 ℃ temperature range, length is that 2300 millimeters reflectings surface are in the thermal deformation of antenna reflective face radial direction and 1.656 millimeters sums of thermal deformation difference of carrying on the back frame.
The utility model adjustment screw rod 3 to the distance of the interior support arm of double freedom adjustment seat 8 is L
1, the distance of adjusting screw rod 3 support arm to double freedom adjustment seat 8 is L
2, L
1/ L
2Ambient temperature when adjusting with reflecting surface unit 10 is relevant, satisfies following formula: L
1/ L
2=Δ t
2/ Δ t
1, in the formula:
L
1Adjust the distance of the interior support arm of seat 8 for adjusting screw rod 3 to double freedom, unit is a millimeter
L
2Adjust the distance of the outer support arm of seat 8 for adjusting screw rod 3 to double freedom, unit is a millimeter
Δ t
1=t-t
1, Δ t
2=t
2-t, the ambient temperature when t is adjustment, t
1To t
2Be circumstance of temperature difference, unit is ℃.Embodiment:
If t
1=-10 ℃, t
2=50 ℃, t=20 ℃
Δ t then
1=t-t
1=20+10=30 ℃
Δt
2＝t
2-t＝50-20＝30℃
Because Δ L=a-b=L
1+ L
2=1.656
So L
1=1.656-L
2, substitution formula L
1/ L
2=Δ t
2/ Δ t
1
Get L
1=L
2=0.828 millimeter.
L
1=0.828 millimeter be for the temperature that conforms from 20 ℃ to 50 ℃ variation and be the thermal deformation displacement that reflecting surface is reserved, L
2=0.828 millimeter be for the temperature that conforms from 20 ℃ to-10 ℃ variation and be the thermal deformation displacement that reflecting surface is reserved.
Therefore, when double freedom adjustment part 7 is installed on two investigation mission outside the city or town integral points of reflecting surface unit 10 non-working surfaces respectively, satisfy L
1=L
2=0.828 millimeter requirement.
Claims (3)
1. antenna assembly with the thermal deformation of automatic adjusting antenna reflective face, it comprises antenna reflective face unit (10), reflecting surface back of the body frame (11), it is characterized in that: also comprise the single-degree-of-freedom adjustment part (1) of adjusting (2), an adjustment screw rod (3), single-degree-of-freedom axle (5), little standard component (6) formation by single-degree-of-freedom, adjust the double freedom adjustment part (7) of seat (8), adjustment screw rod (3), double freedom axle (9), little standard component (6) formation by double freedom;
Described adjustment screw rod (3) by single-degree-of-freedom axle (5), adopt little standard component (6) to be installed in the inside and outside arm room that single-degree-of-freedom is adjusted seat (2), be assembled into single-degree-of-freedom adjustment part (1);
Described adjustment screw rod (3) by double freedom axle (9), adopt little standard component (6) to be installed in the inside and outside arm room that double freedom is adjusted seat (8), be assembled into double freedom adjustment part (7);
Two cover single-degree-of-freedom adjustment parts (1) are installed in respectively in two of reflecting surface unit (10) non-working surface adjust on the point, make the axis of single-degree-of-freedom axle (5) consistent with the radial direction of antenna reflective face;
Two cover double freedom adjustment parts (7) are installed in respectively on two investigation mission outside the city or town integral points of reflecting surface unit (10) non-working surface, make the axis of double freedom axle (9) consistent with the radial direction of antenna reflective face;
The reflecting surface unit (10) that adopts big standard component (4) that single-degree-of-freedom adjustment part (1) and double freedom adjustment part (7) will be installed is installed on the adjustment plate of antenna back frame (11) relevant position by adjusting screw rod (3);
Adopt big standard component (4) to adjust the height of the adjustment screw rod (3) of the height of adjustment screw rod (3) of single-degree-of-freedom adjustment part (1) and double freedom adjustment part (7) respectively, make position, reflecting surface unit (10) satisfy installation requirement; Lock the temperature adaptive reflecting surface regulating component that promptly forms the reflecting surface unit behind the big standard component (4).
2. the antenna assembly with automatic accommodation reflex face temperature deformation according to claim 1, it is characterized in that: double freedom is adjusted the difference DELTA L sum of the inside and outside support arm spacing dimension a of seat (8) for mating holes length dimension b and reflecting surface unit (10) and antenna back frame (11) heat distortion amount under the work temperature difference of adjustment screw rod (3), be a=b+ Δ L, in the formula: Δ L=L * Δ t (α
1-α
2), wherein:
L is the radially nominal dimension of reflecting surface unit, and unit is a millimeter
Δ t is the work temperature difference, and unit is ℃
α
1Be the line of material coefficient of expansion of reflecting surface unit, unit is 10
-6℃
-1
α
2Be the line of material coefficient of expansion of back of the body frame, unit is 10
-6℃
-1
3. the antenna assembly with automatic accommodation reflex face temperature deformation according to claim 1 is characterized in that: the distance that adjustment screw rod (3) is adjusted the interior support arm of seat (8) to double freedom is L
1, the distance of adjusting screw rod (3) support arm outside double freedom is adjusted seat (8) is L
2, L
1/ L
2Ambient temperature when adjusting with reflecting surface unit (10) is relevant, satisfies following formula: L
1/ L
2=Δ t
2/ Δ t
1, in the formula:
L
1Adjust the distance of the interior support arm of seat (8) for adjusting screw rod (3) to double freedom, unit is a millimeter
L
2Adjust the distance of the outer support arm of seat (8) for adjusting screw rod (3) to double freedom, unit is a millimeter
Δ t
1=t-t
1, Δ t
2=t
2-t, the ambient temperature when t is adjustment, t
1To t
2Be circumstance of temperature difference, unit is ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920101509XU CN201345424Y (en) | 2009-02-13 | 2009-02-13 | Antenna device capable of automatically adjusting reflecting plane thermal deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920101509XU CN201345424Y (en) | 2009-02-13 | 2009-02-13 | Antenna device capable of automatically adjusting reflecting plane thermal deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201345424Y true CN201345424Y (en) | 2009-11-11 |
Family
ID=41277007
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920101509XU Expired - Fee Related CN201345424Y (en) | 2009-02-13 | 2009-02-13 | Antenna device capable of automatically adjusting reflecting plane thermal deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201345424Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928426A (en) * | 2021-02-25 | 2021-06-08 | 上海卫星工程研究所 | Large-scale deployable satellite antenna profile precision in-orbit active control device and method |
| WO2023087399A1 (en) * | 2021-11-19 | 2023-05-25 | 中车长春轨道客车股份有限公司 | Passive self-moving structural design method and low-temperature temperature-controlled switch |
-
2009
- 2009-02-13 CN CNU200920101509XU patent/CN201345424Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928426A (en) * | 2021-02-25 | 2021-06-08 | 上海卫星工程研究所 | Large-scale deployable satellite antenna profile precision in-orbit active control device and method |
| WO2023087399A1 (en) * | 2021-11-19 | 2023-05-25 | 中车长春轨道客车股份有限公司 | Passive self-moving structural design method and low-temperature temperature-controlled switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20180213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |