CN115051155A - Hemispherical antenna housing for astronomical telescope - Google Patents
Hemispherical antenna housing for astronomical telescope Download PDFInfo
- Publication number
- CN115051155A CN115051155A CN202210756745.5A CN202210756745A CN115051155A CN 115051155 A CN115051155 A CN 115051155A CN 202210756745 A CN202210756745 A CN 202210756745A CN 115051155 A CN115051155 A CN 115051155A
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- China
- Prior art keywords
- arc
- main beam
- supporting platform
- truss
- arc guide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/428—Collapsible radomes; rotatable, tiltable radomes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/005—Damping of vibrations; Means for reducing wind-induced forces
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- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a hemispherical antenna housing for an astronomical telescope, belonging to the technical field of antenna protection; the truss girder mainly comprises a truss part, a girder part and a bottom supporting platform. Two ends of the main beam are respectively hinged on the supporting platform; the supporting platform is provided with an arc guide rail; each group of truss components comprises a plurality of trusses, and each truss is an 1/4 arc rod; one end of the arc rod is hinged with the middle position of the main beam part; the two groups of truss components are respectively positioned at two sides of the main beam component, and the other ends of the arc rods are restrained on the arc guide rails at the same side and can move along the arc guide rails; the electric pushing cylinder is used for driving the main beam component to lift and fall back, the driving device drives the arc rods to move along the arc guide rail through the rope, and the adjacent arc rods are connected through the rope; the invention has compact integral structure, light weight, high unfolding speed during working, strong structural stability, high rigidity and wide application prospect.
Description
Technical Field
The invention relates to the technical field of antenna protection, in particular to a hemispherical antenna housing for an astronomical telescope, which is an emergency protection device for the astronomical telescope on the ground in an emergency or in severe weather, can be quickly lifted and unfolded in the emergency, and plays a role in protecting the astronomical telescope.
Background
The development trend of astronomical observation technology in China is rising at present, the performance requirement of a telescope is also increasing day by day, the protection value of the telescope needs to be considered comprehensively along with the improvement of the quality specification of the telescope, and if the telescope is damaged in the use process or cannot be protected in time in case of some emergency, the damage caused by the result is immeasurable. Therefore, it is necessary to design an emergency protection device for the telescope. The traditional protection measures generally take methods such as fabric covering and the like as main measures, have low protection effect, cannot deal with some severe weather and some emergency situations, and have great potential risks for the telescope. Moreover, in case of some emergency situations, some manual protective measures such as a skylight opening and closing mechanism and the like are far from insufficient for emergency time, the wind resistance is low, and the rigidity and the stability are also insufficient, so that a mechanical device with high automation level, high rigidity and good stability is required to be designed.
Disclosure of Invention
In view of the above-mentioned technical problems, the present invention provides a hemispherical radome for an astronomical telescope, which can realize emergency protection of a ground telescope in emergency or bad weather, in view of the problems of insufficient rigidity and stability, slow response, low wind resistance, low level of mechanization and automation, etc. of the current telescope emergency protection devices.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a hemispherical radome for an astronomical telescope mainly comprises a main beam component 1, an annular supporting platform 3, an electric push cylinder, a driving device and two groups of truss components 2;
the main beam part is of a semi-annular structure, and two ends of the main beam part are respectively hinged on the supporting platform and are positioned at the same circle center with the supporting platform;
the supporting platform is provided with an arc guide rail, and the arc guide rail and the supporting platform are positioned in the same circle center;
each group of truss components comprises a plurality of trusses, and each truss is an 1/4 arc rod; one end of the arc rod is hinged with the middle position of the main beam part, and the central axis of the two hinged shafts penetrates through the center of the supporting platform; the two groups of truss components are respectively positioned at two sides of the main beam component, and the other ends of the arc rods are restrained on the arc guide rails at the same side and can move along the arc guide rails;
the electric push cylinder is used for driving the main beam component to lift and fall back, the driving device drives the arc rods to move along the arc guide rail through the rope, and the adjacent arc rods are connected through the rope; in a storage state, the two groups of truss components are respectively folded at two sides of the main beam component, and the main beam component is tightly attached to the supporting platform; in the unfolded state, the main beam component is vertical to the supporting platform, and the bottom ends of the arc rods are arranged on the guide rail of the supporting platform.
Furthermore, the arc guide rails are provided with a plurality of arc guide rails, the length of the arc guide rails on the same side is sequentially reduced from inside to outside, and the starting ends of the arc guide rails on the same side are positioned on the same diameter of the supporting platform; the arc rods on the same side are respectively constrained on the arc guide rails; and two sides of the main beam part are respectively provided with a furling groove for furling the arc rods on the same side.
Furthermore, four driving devices are arranged, and every two driving devices are grouped to respectively provide power for the truss components on two sides of the main beam component to move along the arc guide rail; and the two driving devices in the same group, wherein one driving device provides unfolding power for the truss members, and the other driving device provides folding power for the truss members.
Furthermore, the arc rods are provided with baffle plates, and the baffle plates extend towards the outer side of the supporting platform; when the driving device drives the arc rods to be furled, the first arc rod at the innermost side is furled towards the main beam component along the arc guide rail of the first arc rod, the baffle is propped against the second arc rod at the adjacent outer side to drive the second arc rod to be furled, and by analogy, the arc rods at the same side are furled in furling grooves corresponding to the main beam component.
Furthermore, the arc guide rail is an inverted T-shaped groove, and a seal for limiting is arranged at the tail end of the arc guide rail; the bottom of the arc rod is provided with a roller; the roller is restrained in the T-shaped groove.
Furthermore, a plurality of fixed pulleys are arranged on the supporting platform; the fixed pulley is fixed on the inner side of the innermost arc guide rail through a pulley bracket, and a pin shaft of the fixed pulley is vertical to the supporting platform; the rope for driving the first arc rod to move is constrained on the fixed pulley by the driving device.
Furthermore, the section of the arc rod is a right-angled triangle.
The invention adopts the technical scheme to produce the beneficial effects that:
the invention adopts the nested truss, the truss can be nested in the furling groove of the stacked main beam component, the occupied space is smaller, and in the opening process, the trusses of the two rotating shafts above the main beam component are opened and closed in half at the left side and the right side, the unfolding speed is high, after the trusses are unfolded, the trusses can be used as the framework part of the protective cover to be covered on the outer layer, the safety is higher, the whole protective cover is light in weight, large in rigidity and better in stability.
Drawings
FIG. 1 is an overall view of an expanded state of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the main beam of an embodiment of the present invention;
FIG. 3 is a top view of an embodiment of the present invention in an expanded state;
FIG. 4 is an enlarged view of a single truss of an embodiment of the present invention;
FIG. 5 is an overall view of the vertical state of the main beam of the embodiment of the present invention;
FIG. 6 is an enlarged view of a support platform of an embodiment of the present invention;
in the figure: 1-a main beam portion; 2-a truss section; 3-supporting the platform; 11-main beam first axis of rotation; 12-main beam second shaft; 21-tenth truss; 22-a ninth truss; 23-an eighth truss; 24-a seventh truss; 25-a sixth truss; 26-a fifth truss; 27-a fourth truss; 28-a third truss; 29-a second truss; 30-a first truss; 211-truss rotating shaft holes; 31-a gathering groove; 32-arc guide rail; 311-a fixed pulley; 312-a pulley carriage;
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
A hemispherical radome for an astronomical telescope mainly comprises a main beam component 1, an annular supporting platform 3, an electric push cylinder, a driving device and two groups of truss components 2;
the main beam part is of a semi-annular structure, and two ends of the main beam part are respectively hinged on the supporting platform and are positioned in the same circle center with the supporting platform;
the supporting platform is provided with an arc guide rail, and the arc guide rail and the supporting platform are positioned in the same circle center;
each group of truss components comprises a plurality of trusses, and each truss is an 1/4 arc rod; one end of the arc rod is hinged with the middle position of the main beam part, and the central axis of the two hinged shafts penetrates through the center of the supporting platform; the two groups of truss components are respectively positioned at two sides of the main beam component, and the other ends of the arc rods are restrained on the arc guide rails at the same side and can move along the arc guide rails;
the electric push cylinder is used for driving the main beam component to lift and fall back, the driving device drives the arc rods to move along the arc guide rail through the rope, and the adjacent arc rods are connected through the rope; in a storage state, the two groups of truss components are respectively folded at two sides of the main beam component, and the main beam component is tightly attached to the supporting platform; in the unfolded state, the main beam component is vertical to the supporting platform, and the bottom ends of the arc rods are arranged on the guide rail of the supporting platform.
Furthermore, the arc guide rails are provided with a plurality of arc guide rails, the length of the arc guide rails on the same side is sequentially reduced from inside to outside, and the starting ends of the arc guide rails on the same side are positioned on the same diameter of the supporting platform; the arc rods on the same side are respectively constrained on the arc guide rails; and two sides of the main beam part are respectively provided with a furling groove for furling the arc rods on the same side.
Furthermore, four driving devices are arranged, and every two driving devices are grouped to respectively provide power for the truss components on two sides of the main beam component to move along the arc guide rail; and the two driving devices in the same group, wherein one driving device provides unfolding power for the truss members, and the other driving device provides folding power for the truss members.
Furthermore, the arc rods are provided with baffle plates, and the baffle plates extend towards the outer side of the supporting platform; when the driving device drives the arc rods to be furled, the first arc rod at the innermost side is furled towards the main beam component along the arc guide rail of the first arc rod, the baffle is propped against the second arc rod at the adjacent outer side to drive the second arc rod to be furled, and by analogy, the arc rods at the same side are furled in furling grooves corresponding to the main beam component.
Furthermore, the arc guide rail is an inverted T-shaped groove, and a seal for limiting is arranged at the tail end of the arc guide rail; the bottom of the arc rod is provided with a roller; the roller is restrained in the T-shaped groove.
Furthermore, a plurality of fixed pulleys are arranged on the supporting platform; the fixed pulley is fixed on the inner side of the innermost arc guide rail through a pulley bracket, and a pin shaft of the fixed pulley is vertical to the supporting platform; the rope for driving the first arc rod to move is constrained on the fixed pulley by the driving device.
Furthermore, the section of the arc rod is a right-angled triangle.
The following is a more specific example:
the embodiment is mainly divided into 5 parts, including a truss part, a main beam part, a driving part, a track part and a locking part; the truss part is the skeleton main part of protection casing, is responsible for playing the supporting role for flexible membrane material. The girder part plays the effect of lifting for accomodating the truss. The driving part provides power for the whole system. The track part provides fixed track for truss bottom gyro wheel, plays spacing effect. The locking part provides a fixing and locking function when the wind shielding cover is closed.
Referring to fig. 2, the main beam part adopts a semicircular structure, the cross section of the main beam part is in an I shape, the left side and the right side of the main beam part are asymmetrical, so that a membrane is conveniently folded into a furling groove of the main beam, and meanwhile, the truss structure is completely retracted into the main beam structure.
Referring to fig. 1 and 3, both are schematic views of the truss partially unfolded structure; the semi-spherical truss structure is characterized in that two quarter spheres are spliced into a semi-spherical structure, the trusses are quarter arc rods, one side of each truss is totally 10 trusses, the trusses are divided into 10 spans, the number of the trusses is 180 degrees when the trusses are unfolded, the trusses are divided into 10 parts, and each group of trusses needs to be rotated by 18 degrees more. Two rotating shafts are arranged above the main beam, and 10 trusses are distributed on each rotating shaft. The truss structure is shown in fig. 1, and considering the total weight of the whole device and the bearing limit of the specified area, the interior of the truss adopts a hollow design, the cross section of the truss is a right triangle, and when the truss is folded, the occupied space is reduced.
Referring to fig. 5, the trusses are unfolded along the arc guide rail on the supporting slip, and one side of the trusses is totally 10 trusses and is divided into 10 spans, in this embodiment, every two spans share one rail, and one side of the two spans shares 5 rails; the two sides of the track are distributed in a centrosymmetric way. The length of each track is different, the unfolding needs 180 degrees and is divided into 10 parts, and each group of trusses needs to be rotated by 18 degrees more, so that the length of the track is designed.
The gyro wheel can be better enter into the pitch arc guide rail in, there is angle of inclination and fillet at gyro wheel income groove department track, the gyro wheel of being convenient for gets into the inslot. And considering that in order to prevent the interference between the roller structure and the guide rail during the lifting process, the roller structure bracket is slightly bent and has a length suitable for enabling the roller to just enter the guide rail.
The idler wheel and the rail can not be separated, and the inverted T-shaped rail is adopted, so that the idler wheel can be hooked, the idler wheel is prevented from being pulled out of the rail, and the idler wheel is attached to and rolls on the inverted T-shaped rail.
The tail of each guide rail is sealed, so that the roller is prevented from sliding out, and meanwhile, the limiting effect is also achieved.
The truss part is unfolded in a wire rope driving mode, a first truss is pulled, and all trusses are connected with each other through ropes and are sequentially unfolded. A circle of steel wire rope is arranged in the circular ring, and the driving device is arranged below the supporting platform by utilizing the steering of the fixed pulley.
Considering the problem that the whole steel wire rope presents a polygon instead of a circle due to the fact that the steel wire rope is tightened between the pulleys, the polygon is close to the circle by the method of increasing the even distribution quantity of the pulleys, and further the action track of the truss is approximate to the circle. The arrangement of the fixed pulley is shown in fig. 6.
The truss part is still folded in by adopting a steel wire rope traction driving mode, and the trusses are sequentially recovered from the main truss. Wherein according to the unique triangle-shaped structural design of truss make the truss alternate in order to reduce girder horizontal storage area size. The truss is driven by the baffle plate to achieve the retracting effect.
Referring to fig. 4 and 2, the sealing effect is considered and the integrity of the sealing plate is ensured as much as possible. This design adopts unilateral truss connection design, and girder both sides truss is mutually incoherent, and every side covers 180 through ten trusses rotations and reaches the effect of keeping out the wind, also makes the connection position can reach good sealed effect. The trusses on the two sides are hinged through different pin shafts.
Claims (7)
1. A hemispherical radome for an astronomical telescope is characterized by mainly comprising a main beam part (1), an annular supporting platform (3), an electric push cylinder, a driving device and two groups of truss parts (2);
the main beam part is of a semi-annular structure, and two ends of the main beam part are respectively hinged on the supporting platform and are positioned at the same circle center with the supporting platform;
the supporting platform is provided with an arc guide rail, and the arc guide rail and the supporting platform are positioned in the same circle center;
each group of truss components comprises a plurality of trusses, and each truss is an 1/4 arc rod; one end of the arc rod is hinged with the middle position of the main beam part, and the central axis of the two hinged shafts penetrates through the center of the supporting platform; the two groups of truss components are respectively positioned on two sides of the main beam component, and the other ends of the arc rods are restrained on the arc guide rails on the same side and can move along the arc guide rails;
the electric push cylinder is used for driving the main beam component to lift and fall back, the driving device drives the arc rods to move along the arc guide rail through the rope, and the adjacent arc rods are connected through the rope; in a storage state, the two groups of truss components are respectively folded at two sides of the main beam component, and the main beam component is tightly attached to the supporting platform; in the unfolded state, the main beam component is vertical to the supporting platform, and the bottom ends of the arc rods are arranged on the guide rail of the supporting platform.
2. The hemispherical radome for the astronomical telescope of claim 1, wherein the arc guide rails are provided with a plurality of arc guide rails, the length of the arc guide rails on the same side is sequentially reduced from inside to outside, and the starting ends of the arc guide rails on the same side are positioned on the same diameter of the supporting platform; the arc rods on the same side are respectively constrained on the arc guide rails; and two sides of the main beam part are respectively provided with a furling groove for furling the arc rods on the same side.
3. The hemispherical radome for the astronomical telescope of claim 2 wherein the driving device is provided with four driving devices, and the four driving devices are grouped in pairs to respectively provide power for the truss components at two sides of the main beam component to move along the arc guide rail; and the two driving devices in the same group, wherein one driving device provides unfolding power for the truss members, and the other driving device provides folding power for the truss members.
4. The hemispherical radome for the astronomical telescope of claim 3 wherein the arc rods are provided with baffles, and the baffles extend towards the outer side of the supporting platform; when the driving device drives the arc rods to be furled, the first arc rod at the innermost side is furled towards the main beam component along the arc guide rail of the first arc rod, the baffle is propped against the second arc rod at the adjacent outer side to drive the second arc rod to be furled, and by analogy, the arc rods at the same side are furled in furling grooves corresponding to the main beam component.
5. The hemispherical radome for the astronomical telescope of claim 4, wherein the arc guide rail is an inverted T-shaped groove, and the tail end of the arc guide rail is provided with a seal for limiting; the bottom of the arc rod is provided with a roller; the roller is restrained in the T-shaped groove.
6. The hemispherical radome for the astronomical telescope of claim 5, wherein the supporting platform is further provided with a plurality of fixed pulleys; the fixed pulley is fixed on the inner side of the innermost arc guide rail through a pulley bracket, and a pin shaft of the fixed pulley is vertical to the supporting platform; the rope for driving the first arc rod to move is constrained on the fixed pulley by the driving device.
7. A hemispherical radome for an astronomical telescope according to claim 1, wherein the circular rods have a right-angled triangle cross-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210756745.5A CN115051155A (en) | 2022-06-30 | 2022-06-30 | Hemispherical antenna housing for astronomical telescope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210756745.5A CN115051155A (en) | 2022-06-30 | 2022-06-30 | Hemispherical antenna housing for astronomical telescope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115051155A true CN115051155A (en) | 2022-09-13 |
Family
ID=83165698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210756745.5A Pending CN115051155A (en) | 2022-06-30 | 2022-06-30 | Hemispherical antenna housing for astronomical telescope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115051155A (en) |
-
2022
- 2022-06-30 CN CN202210756745.5A patent/CN115051155A/en active Pending
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