CN209913021U - Antenna secondary surface back frame with single-layer space structure with 1:2 inner and outer sides - Google Patents
Antenna secondary surface back frame with single-layer space structure with 1:2 inner and outer sides Download PDFInfo
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- CN209913021U CN209913021U CN201921196176.3U CN201921196176U CN209913021U CN 209913021 U CN209913021 U CN 209913021U CN 201921196176 U CN201921196176 U CN 201921196176U CN 209913021 U CN209913021 U CN 209913021U
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Abstract
The utility model discloses an inside and outside limit number is 1 than 2 individual layer spatial structure vice back of the body frame, it relates to the vice back of the body frame technique of double reflection surface antenna in fields such as communication, observing and controlling and radio astronomy. Aims to provide a light-weight, high-rigidity and easy-to-mount auxiliary back frame suitable for batch production. The novel ball joint comprises an inner ring support, an outer ring support, a main rod, an inclined rod, an inner ring ball joint, an outer ring ball joint and the like. The inner ring support and the outer ring support are in the form of polygons, and the ratio of the number of sides of the inner ring support to the number of sides of the outer ring support is 1: 2. The auxiliary surface back frame is of a single-layer space structure, is composed of a plurality of triangular units, has stable mechanical characteristics, and adopts a bolt-ball structure in each node connection mode. The utility model has the characteristics of structural rigidity is good, light in weight and quick installation, can reduce manufacturing cost and installation, cost of transportation simultaneously, vice face back of the body frame structure in the big-and-middle-sized double reflection surface antenna of specially adapted.
Description
Technical Field
The utility model relates to a vice face back of the body frame of double reflection face antenna in fields such as communication, observing and controlling and radio astronomy, more specifically say, relate to the lightweight of medium-diameter vice face, high rigidity back of the body frame structure, be particularly useful for the production and the manufacturing of big batch, the big medium-and-large-size bore double reflection face antenna of quick installation.
Background
The reflector antenna has the characteristics of high gain, low side lobe and the like, is widely applied to the fields of communication, measurement and control, radio astronomy and the like, and has the following advantages compared with a single reflector antenna:
(1) due to the addition of the auxiliary surfaces, the geometric parameters are increased, and the design is convenient and flexible according to various requirements;
(2) the paraboloid with short focal length can be used as the main reflecting surface, so that the longitudinal size of the antenna is reduced;
(3) due to the introduction of the minor plane, the feed source can be arranged near the vertex of the paraboloid, so that the transmission path between the feed source and the receiver is shortened, and the noise in the transmission process is reduced.
For the above reasons, the dual reflector antenna is more important than the single reflector antenna, and is particularly suitable for high performance, wide frequency band, multi-band and other important occasions.
The double-reflector antenna consists of a main surface, an auxiliary surface and a feed source, wherein the auxiliary surface is used for reflecting electromagnetic waves from the main surface or the feed source, and the performance of the auxiliary surface directly influences the overall index of an antenna system. The secondary back frame is used for supporting and providing rigidity for the secondary face, and the surface precision and the position precision of the secondary face are directly determined by the back frame. Therefore, the sub-surface back frame structure is a core component in the dual reflector antenna system.
For the minor surface with the caliber of 1500-8000 mm, if an integral structure is adopted, the mechanical manufacturing capability is limited, and a blocking form is generally adopted. The sub-surface is connected and supported by a back frame, the traditional sub-surface back frame generally comprises a central body, radiation beams, ring pull rods and the like, the radiation beams are uniformly distributed along the circumference of the central body, and the ring pull rods are connected to form an antenna back frame, for example, an easily adjustable reflecting panel back frame structure is disclosed in Chinese patent publication No. CN101630776A, entitled easily adjustable reflecting panel back frame structure and reflecting panel supporting structure.
In the traditional secondary surface back frame structure, a central body adopts a cylindrical form, is internally lined with a reinforcing rib plate and is formed by welding; the radiant beam is a plane truss structure formed by welding a plurality of sectional materials. Although the structural form of the back frame can meet the electrical performance index of the antenna, the structural form of the back frame has the following defects:
(1) the self-weight deformation is large. The traditional secondary back frame adopts a central body and truss combination mode. The central body is formed by a solid plate, the inside of the central body is provided with a circumferential reinforcing rib plate and a radial reinforcing rib plate, and the truss is composed of a plurality of plane radiation beams distributed along the circumference. Although the structural form can meet the precision requirement of the secondary surface, the weight of the back frame is increased, the deformation of the whole structure of the supporting secondary surface system is increased, and the position precision of the secondary surface is influenced.
(2) The surface accuracy is poor. The traditional secondary surface back frame consisting of a central body, a radiant beam and a ring pull rod has very high rigidity at the position of the central body, and the rigidity of the position of the radiant beam is weak, so that the rigidity of the back frame at the combination position is discontinuous, and the precision of the secondary surface is poor.
(3) The antenna is inefficient. In order to reduce the deformation caused by the overweight secondary back frame, the geometric dimension of the supporting system needs to be increased to improve the rigidity and the position precision, so that the aperture shielding generated by the supporting system is increased, and the overall efficiency of the antenna is reduced.
A secondary surface pose adjusting mechanism for a satellite antenna is disclosed in Chinese patent publication No. CN105281036A, entitled auxiliary surface pose space six-dimensional adjusting mechanism; chinese patent publication No. CN203910974U, entitled "an antenna sub-reflector system with a swing adjusting mechanism", discloses a device for adjusting the posture of a sub-surface by using a crank-rocker mechanism; chinese patent publication No. CN202712431U, entitled "antenna sub-reflector system with fixed adjusting mechanism", discloses a six-degree-of-freedom parallel adjusting mechanism for the sub-surface of a large antenna. Although the above mechanisms can adjust the position or posture of the sub-surface, the following disadvantages exist with respect to the sub-surface back frame involved therein:
(1) only minor adjustments are involved. The above three patents adjust the secondary surface by adopting different methods, and do not relate to the supporting mode or structural form of the secondary surface.
(2) The auxiliary back frame is not involved. In the above mentioned patent, no back frame construction solution is given in order to guarantee the stiffness and accuracy of the secondary side.
(3) Only small bore or conventional back frames are mentioned. The above patents CN105281036A and CN203910974U only relate to integral minor faces; the secondary surface of the patent with publication number CN202712431U adopts a block structure, but the back frame of the secondary surface is a traditional structure.
The contents of the utility model
An object of the utility model is to overcome prior art's not enough, provide an inside and outside limit number for 1 individual layer space structure antenna vice back of the body frame than 2, compare with current technique, have light in weight, the precision is high, rigidity is big and can install fast characteristics.
The utility model discloses vice face back of the body frame adopts individual layer space bolt ball structural style, two rings outside and inside, and the stable triangle-shaped unit of a plurality of is constituteed, and the node connection mode adopts the bolt ball structure, and the bolt ball adopts hollow structure and through numerical control machine-shaping, and this kind of vice face back of the body frame structural style can effectively improve the bulk stiffness of vice face, reduces the weight of vice face system, can reduce manufacturing cost and installation, cost of transportation simultaneously.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
a single-layer space structure antenna secondary surface back frame with the number of inner and outer edges being 1 to 2 comprises an inner ring support 1 and an outer ring support 2 which are positioned in two planes; the shape of the inner ring support 1 is an N-edge shape, wherein N is a natural number and is more than or equal to 3, the inner ring support 1 consists of N inner ring rods 1-N, and every two inner ring rods 1-N are connected through an inner ring ball joint 5; the outer ring support 2 is 2N-sided in shape, the outer ring support 2 is composed of 2N outer ring rods 2-1-2N, and every two outer ring rods 2-1-2N are connected through an outer ring ball joint 6; the 2N outer ring ball nodes 6 comprise N outer ring main rod ball nodes and N outer ring diagonal rod ball nodes, and the outer ring main rod ball nodes and the outer ring diagonal rod ball nodes are arranged at intervals; the N outer ring main rod ball nodes are correspondingly connected with the N inner ring ball nodes 5 through the N main rods 3; the N outer ring diagonal rod ball nodes are correspondingly connected with the N inner ring diagonal rod ball nodes 5 through 2N diagonal rods 4; and triangular structures are formed between the inner ring rod and the two inclined rods and between the outer ring rod, the main rod and the inclined rods.
The inner ring rod, the outer ring rod, the main rod and the inclined rod are all steel round tubes, aluminum alloy round tubes or carbon fiber composite tubes.
Wherein, the inner ring rod, the outer ring rod, the main rod and the diagonal rod all comprise round pipes, conical heads, high-strength bolts and nuts.
The connection forms of the inner ring rod, the outer ring rod, the main rod 3 and the inclined rod and the corresponding inner ring ball joint 5 and outer ring ball joint 6 all adopt a bolt-ball structure.
The inner ring ball joint 5 and the outer ring ball joint 6 are both in spherical cap-shaped hollow structures, and corresponding threaded holes are distributed in the hemispherical surface.
Wherein each side length of the N-shaped polygon is the same
The N-shaped sides comprise triangles, quadrangles, pentagons and hexagons.
Compared with the background art, the utility model following beneficial effect has:
(1) compared with the prior art, the utility model, the back of the body frame adopts individual layer spatial structure form, comprises a plurality of triangle-shaped units, has stable mechanical properties, can promote the surface accuracy of vice face, has the advantage that rigidity is big, light in weight.
(2) The utility model discloses the individual layer structure who adopts, the member distributes evenly, and gravity warp the equilibrium, has overcome the shortcoming of traditional vice back of the body frame rigidity sudden change.
(3) The utility model provides a vice back of body frame comprises single member, but the independent machine-shaping compares with traditional weld forming's truss structure, has the advantage that the precision is high, non-deformable and easy adjustment.
(4) The utility model discloses each connected node in the vice back of the body frame all adopts the bolt ball node through numerical control machine-shaping, and back of the body frame position accuracy after the equipment is high, interchangeability is good, and the specially adapted mass production is made.
(5) The utility model discloses all members of well constitution back of the body frame all adopt bolt ball structure interconnect, and the transportable unit after the decomposition all is suitable for road transport and standard container.
In a word, the utility model discloses think about ingenious, the thinking is clear, easily realizes, has both solved the problem that vice back of the body frame structure precision is low, the weight is heavy among the traditional double reflection face antenna, has improved the rigidity and the installation accuracy of vice back of the body frame again, is an important improvement to prior art.
Drawings
FIG. 1 is a general block diagram of an embodiment of the present invention;
fig. 2 is a schematic diagram of a node structure according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a ball joint according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the components of an embodiment of the present invention;
FIG. 5 is a schematic diagram of the topology of the present invention with triangular inner rings;
FIG. 6 is a schematic diagram of the present invention in which the inner ring is a quadrilateral;
fig. 7 is a topological schematic diagram of the present invention in which the inner ring is hexagonal.
The meanings of the reference symbols in the figures are as follows: the steel wire rope comprises an inner ring support 1, inner ring rods 1-2, inner ring rods 1-3, inner ring rods 1-4, inner ring rods 1-5, an outer ring support 2, outer ring rods 2-1, outer ring rods 2-2, outer ring rods 2-3, outer ring rods 2-4, outer ring rods 2-5, outer ring rods 2-6, outer ring rods 2-7, outer ring rods 2-8, outer ring rods 2-9, outer ring rods 2-10, a main rod 3, an inclined rod 4, an inner ring ball joint 5 and an outer ring ball joint 6.
Detailed Description
The present invention will be further described with reference to the accompanying fig. 1-7 and the detailed description thereof.
The embodiment of the utility model provides an use in the double reflection surface antenna vice face bore of a knife is 5 meters vice face back of the body frame as the example, as shown in figure 1, the utility model discloses a vice face back of the body frame includes: the inner ring support 1, the outer ring support 2, the main rod 3, the diagonal rod 4, the inner ring ball joint 5 and the outer ring ball joint 6.
The inner ring support 1 and the outer ring support 2 are respectively located in two planes, and the distance between the two planes is 500-3000 mm.
The distance between the two planes in this example takes the value 1000 mm.
The shape of the inner ring support 1 is an N-sided polygon, each side length of the N-sided polygon is the same, N is a natural number and is not less than 3, the inner ring support 1 is composed of N inner ring rods 1-N, and every two inner ring rods 1-N are connected through an inner ring ball joint 5;
in the embodiment, the inner ring support 1 is pentagonal in shape and consists of an inner ring rod 1-1, an inner ring rod 1-2, an inner ring rod 1-3, an inner ring rod 1-4 and an inner ring rod 1-5.
The outer ring support 2 is 2N-shaped, the outer ring support 2 is composed of 2N outer ring rods 2-1-2N, and every two outer ring rods 2-1-2N are connected through an outer ring ball joint 6.
In this example, the outer ring support 2 is decagonal in shape and is composed of an outer ring rod 2-1, an outer ring rod 2-2, an outer ring rod 2-3, an outer ring rod 2-4, an outer ring rod 2-5, an outer ring rod 2-6, an outer ring rod 2-7, an outer ring rod 2-8, an outer ring rod 2-9 and an outer ring rod 2-10.
At least one of the N inner ring ball nodes 5 corresponds to the outer ring ball node 6.
In this example, five of the inner ring ball nodes 5 correspond to the outer ring ball node 6.
Two ends of the main rod 3 are respectively connected with the inner ring ball nodes 5 and the outer ring ball nodes 6, and the number of the main rod is N.
The number of stems 3 in this example is 5.
Two ends of the diagonal rod 4 are respectively connected with the inner ring ball joint 5 and the outer ring ball joint 6, and the number of the diagonal rod is 2N.
The number of diagonal rods in this example is 10.
The net surface structure of a plurality of triangular dead zones is formed by the inner ring rods 1-5, the outer ring rods 2-1-2-10, the main rod 3 and the diagonal rods 4.
The back frame structure in this example is a mesh surface structure consisting of 15 triangular vacant areas.
The inner ring rods 1-5, the outer ring rods 2-1-2-10, the main rod 3 and the diagonal rods 4 are steel round tubes or aluminum alloy round tubes, and can also be carbon fiber composite materials, the diameter is 30-120 mm, and the length is 500-3000 mm.
In this example, the inner ring rods 1-1 to 1-5, the outer ring rods 2-1 to 2-10, the main rod 3 and the diagonal rods 4 are made of carbon fiber composite materials, and have a diameter of 60 to 100mm and a length of 1200 to 2000 mm.
The inner ring rods 1-5, the outer ring rods 2-1-2-10, the main rod 3 and the diagonal rods 4 respectively comprise round pipes, conical heads, high-strength bolts and nuts.
As shown in FIG. 2, the connection forms of the inner ring rods 1-5, the outer ring rods 2-1-2-10, the main rod 3 and the diagonal rods 4 and the corresponding inner ring ball nodes 5 and outer ring ball nodes 6 are all in a bolt-ball structure.
As shown in fig. 3, the inner ring ball joint 5 and the outer ring ball joint 6 are both of spherical cap-shaped hollow structures, and corresponding threaded holes are distributed on the hemispherical surfaces and are formed by machining through a numerical control machine.
In order to verify the universality of the utility model, the embodiment also provides a schematic diagram of the polygon with different edge numbers of the inner ring. Fig. 5 is a topological schematic diagram of the embodiment of the present invention in which the inner ring is triangular; fig. 6 is a schematic diagram of a quadrilateral topology of an inner ring according to an embodiment of the present invention; fig. 7 is a topological schematic diagram of the present invention in which the inner ring is hexagonal. Other inner ring edge number manufacturing methods can also be obtained according to the steps provided above.
The above, only be the preferred embodiment of the present invention, it is not right the utility model discloses do any restriction, all according to the utility model discloses any simple modification, change and equivalent structure change that the technical entity was done to above embodiment all still belong to the utility model discloses technical scheme's within the scope of protection.
Claims (7)
1. The utility model provides an inside and outside limit is 1 to 2 single layer space structure's antenna secondary face back of body frame which characterized in that: comprises an inner ring support (1) and an outer ring support (2) which are positioned in two planes; the shape of the inner ring support (1) is an N-edge shape, wherein N is a natural number and is more than or equal to 3, the inner ring support (1) is composed of N inner ring rods (1-N), and every two inner ring rods (1-N) are connected through inner ring ball nodes (5); the outer ring support (2) is 2N-sided in shape, the outer ring support (2) is composed of 2N outer ring rods (2-1-2N), and every two outer ring rods (2-1-2N) are connected through an outer ring ball joint (6); the 2N outer ring ball nodes (6) comprise N outer ring main rod ball nodes and N outer ring diagonal rod ball nodes, and the outer ring main rod ball nodes and the outer ring diagonal rod ball nodes are arranged at intervals; the N outer ring main rod ball nodes are correspondingly connected with the N inner ring ball nodes (5) through the N main rods (3) one by one; the N outer ring diagonal rod ball nodes are correspondingly connected with the N inner ring diagonal rod ball nodes (5) through 2N diagonal rods (4); and triangular structures are formed between the inner ring rod and the two inclined rods and between the outer ring rod, the main rod and the inclined rods.
2. The antenna sub-surface back frame with the single-layer space structure, the number of the inner sides and the outer sides of which is 1 to 2, as claimed in claim 1, wherein: the inner ring rod, the outer ring rod, the main rod and the inclined rod are all steel round tubes, aluminum alloy round tubes or carbon fiber composite tubes.
3. The antenna sub-surface back frame with the single-layer space structure, the number of the inner sides and the outer sides of which is 1 to 2, as claimed in claim 1, wherein: the inner ring rod, the outer ring rod, the main rod and the inclined rod respectively comprise a circular tube, a conical head, a high-strength bolt and a nut.
4. The antenna sub-surface back frame with the single-layer space structure, the number of the inner sides and the outer sides of which is 1 to 2, as claimed in claim 1, wherein: the connection forms of the inner ring rod, the outer ring rod, the main rod (3) and the inclined rod and the corresponding inner ring ball joint (5) and outer ring ball joint (6) all adopt a bolt ball structure.
5. The antenna sub-surface back frame with the single-layer space structure, the number of the inner sides and the outer sides of which is 1 to 2, as claimed in claim 1, wherein: the inner ring ball joint (5) and the outer ring ball joint (6) are both of spherical crown-shaped hollow structures, and corresponding threaded holes are distributed on the hemispherical surface.
6. The antenna sub-surface back frame with the single-layer space structure, the number of the inner sides and the outer sides of which is 1 to 2, as claimed in claim 1, wherein: and each side length of the N-shaped polygon is the same.
7. The antenna sub-surface back frame with the single-layer space structure, the number of the inner sides and the outer sides of which is 1 to 2, as claimed in claim 1, wherein: the N-shaped polygon comprises a triangle, a quadrangle, a pentagon and a hexagon.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921196176.3U CN209913021U (en) | 2019-07-26 | 2019-07-26 | Antenna secondary surface back frame with single-layer space structure with 1:2 inner and outer sides |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921196176.3U CN209913021U (en) | 2019-07-26 | 2019-07-26 | Antenna secondary surface back frame with single-layer space structure with 1:2 inner and outer sides |
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| CN209913021U true CN209913021U (en) | 2020-01-07 |
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| CN201921196176.3U Active CN209913021U (en) | 2019-07-26 | 2019-07-26 | Antenna secondary surface back frame with single-layer space structure with 1:2 inner and outer sides |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289477A (en) * | 2019-07-26 | 2019-09-27 | 中国电子科技集团公司第五十四研究所 | A kind of the antenna minor face backrest and manufacturing method of the single layer space structure that inside and outside number of edges is 1 to 2 |
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2019
- 2019-07-26 CN CN201921196176.3U patent/CN209913021U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289477A (en) * | 2019-07-26 | 2019-09-27 | 中国电子科技集团公司第五十四研究所 | A kind of the antenna minor face backrest and manufacturing method of the single layer space structure that inside and outside number of edges is 1 to 2 |
| CN110289477B (en) * | 2019-07-26 | 2024-05-24 | 中国电子科技集团公司第五十四研究所 | Antenna auxiliary face back frame with single-layer space structure and inner and outer edge number of 1 to 2 and manufacturing method |
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