CN212783756U - Large-span suspension cable structure log periodic antenna - Google Patents
Large-span suspension cable structure log periodic antenna Download PDFInfo
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- CN212783756U CN212783756U CN202021404401.0U CN202021404401U CN212783756U CN 212783756 U CN212783756 U CN 212783756U CN 202021404401 U CN202021404401 U CN 202021404401U CN 212783756 U CN212783756 U CN 212783756U
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Abstract
The invention provides a large-span suspension cable structure log periodic antenna, which comprises a first tower, a second tower, a combined oscillator, a bearing cable and a stabilizing cable, wherein the bearing cable is used for signal transmission; the combined vibrator is hung on a bearing cable, one end of the bearing cable is fixed on the first tower, and the other end of the bearing cable is connected with the second tower in a sliding mode and is loaded with a first weight; the combined vibrator is also hung on a stabilizing cable, one end of the stabilizing cable is fixed on the second tower, and the other end of the stabilizing cable is connected with the first tower in a sliding manner and is loaded with a second weight; the bearing cable is positioned above the stabilizing cable. The invention adopts a large-span suspension cable structure, which is easy to realize the large-scale antenna size, the structure has light self weight and less steel consumption, reduces the production cost, and particularly, the larger the span is, the more obvious the economic benefit is.
Description
Technical Field
The invention belongs to the technical field of antennas, and particularly relates to a large-span suspension cable structure log periodic antenna.
Background
With the development of radar detection technology, antennas are moving from narrow band to wide band, from single band to multiple bands. The large-scale log-periodic antenna has the advantages of wide frequency band, high gain, good directivity, long detection distance and the like, and is increasingly applied to many fields.
At present, a truss structure is mostly adopted by a large-scale log periodic antenna, an antenna oscillator is rigidly fixed on the truss, the structure size and the weight of the antenna are large, the production cost is high, the construction difficulty is also large, particularly, in order to obtain larger radar detection power, the overall structure size of the antenna is larger and larger, and the problems of weight, cost, construction and the like caused by the larger and larger overall structure size are more and more obvious. Therefore, it is urgently needed to design a new large log periodic antenna to solve the current problem.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided is a large-span suspension cable structure log periodic antenna, which can meet the design requirements of large-scale, light-weight and low cost of the antenna, and can eliminate the influence of temperature deformation of a bearing cable and improve the position precision and stability of a combined oscillator.
The invention is realized by the following steps: a long-span suspension cable structure log periodic antenna comprises a first tower, a second tower, a combined oscillator, a bearing cable and a stabilizing cable, wherein the bearing cable is used for signal transmission; the combined vibrator is hung on a bearing cable, one end of the bearing cable is fixed on the first tower, and the other end of the bearing cable is connected with the second tower in a sliding mode and is loaded with a first weight; the combined vibrator is also hung on a stabilizing cable, one end of the stabilizing cable is fixed on the second tower, and the other end of the stabilizing cable is connected with the first tower in a sliding manner and is loaded with a second weight; the bearing cable is positioned above the stabilizing cable.
Further, the combined oscillator comprises an upper oscillator, a lower oscillator and an insulating connecting piece; the upper vibrator is connected with the bearing cable in a hanging mode, the lower vibrator is connected with the stabilizing cable in a hanging mode, and the upper vibrator and the lower vibrator are fixedly connected through the insulating connecting piece.
Further, the upper vibrator and the lower vibrator are cage-type structures.
Further, the cage structure is formed by welding aluminum pipes.
Further, cage structure includes the oscillator frame that constitutes by a plurality of first body of rod and the second body of rod of fixed connection between different first body of rod, the diameter of first body of rod is greater than the diameter of second body of rod.
Further, the insulating connecting piece is a weather-proof non-metal connecting piece.
Further, the sliding connection is a connection formed by using pulleys.
Furthermore, the first tower and the second tower respectively comprise a plurality of tower sections which are fixedly connected up and down in sequence.
Further, the tower section comprises a frame formed by a plurality of first pipe bodies and second pipe bodies fixedly connected among different first pipe bodies, and the diameter of each first pipe body is larger than that of each second pipe body.
Furthermore, the bearing rope and the stabilizing rope are galvanized steel wire ropes.
The invention has the following beneficial effects:
1. the invention adopts a large-span suspension cable structure, which is easy to realize the large-scale antenna size, the structure has light self weight and less steel consumption, reduces the production cost, and particularly, the larger the span is, the more obvious the economic benefit is.
2. One end of the bearing cable of the invention is used for hanging a heavy object and tensioning the bearing cable, thereby eliminating the influence of temperature deformation of the bearing cable and improving the position precision of the combined vibrator. Meanwhile, a stabilizing cable is arranged in the structure and used for resisting the action of wind power and the gravity of the combined oscillator together, the stability of the antenna is improved, and the position precision of the combined oscillator is further improved.
3. The combined vibrator is connected with the bearing cable and the stabilizing cable to form a stable stress system, the combined vibrator is equivalent to a web member in the suspension cable, prestress is properly applied, the whole stress system is changed into a 'suspension cable truss', and the stress condition of the antenna can be well improved.
4. The invention adopts the light flexible design, avoids using a heavy crane, is simple and convenient to install and maintain, is beneficial to high-altitude operation of a tower worker, has relatively low construction difficulty and less consumed working hours, and reduces the installation and maintenance cost.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a perspective view of the structure of the combined vibrator shown in FIG. 1;
fig. 3 is a sectional view showing the structure of the combined vibrator shown in fig. 2.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 3, a large-span suspension cable structure log periodic antenna comprises a first tower 1, a second tower 2, a combined oscillator 4, a bearing cable 6 and a stabilizing cable 7.
Wherein the first tower 1 and the second tower 2 are used as supporting components for mounting other components of the whole antenna. The first tower 1 and the second tower 2 are fixed on the ground with a large distance therebetween. The first tower frame 1 and the second tower frame 2 both comprise a plurality of tower sections 12 which are fixedly connected up and down in sequence. Further, the tower section 12 includes a frame formed of a plurality of first tubes and a second tube fixedly connected between the different first tubes, the first tubes having a diameter larger than that of the second tubes. The first pipe body serves as a main frame, and the second pipe body serves as a reinforcing rib. The end face of each tower section 12 is interfaced so as to be integrally connectable. The length and number of tower sections 12 are determined according to the height of the first tower 1 and the second tower 2.
The combined vibrator 4 is hung on a bearing cable 6, one end of the bearing cable 6 is fixed on the first tower frame 1, and the other end of the bearing cable 6 is connected with the second tower frame 2 in a sliding mode and is loaded with a first weight 5; the combined vibrator 4 is also mounted on a stabilizing cable 7, one end of the stabilizing cable 7 is fixed on the second tower 2, and the other end of the stabilizing cable 7 is connected with the first tower 1 in a sliding manner and is loaded with a second heavy object 11; the load-bearing cable 6 is located above the stabilising cables 7. In this example, the number of the combined vibrators 4 is plural, two adjacent combined vibrators 4 are connected by a bearing cable 6, the combined vibrator 4 close to the first tower 1 is fixedly connected to the first tower 1 by the bearing cable 6, the combined vibrator 4 close to the second tower 2 is fixedly connected to the first weight 5 by the bearing cable 6, and the bearing cable 6 is slidably connected to the second tower 2 by a pulley. Under the pulling of the first weight 5, the bearing wire 6 is straightened, so that the temperature deformation is eliminated.
Based on the same principle, the two adjacent combined vibrators 4 are also connected through a stabilizing cable 7, the combined vibrator 4 close to the second tower 2 is fixedly connected with the second tower 2 through the stabilizing cable 7, the combined vibrator 4 close to the first tower 1 is fixedly connected with a second weight 11 through the stabilizing cable 7, and the stabilizing cable 7 is connected with the first tower 1 in a sliding mode through a pulley. Under the pulling of the second weight 11, the stabilizing cable 7 is straightened to resist the action of wind power and the gravity of the combined oscillator 4, and the stability of the antenna is improved. The bearing rope 6 and the stabilizing rope 7 are not only used for hanging and connecting the combined vibrator 4, but also have the function of transmitting electric signals. The bearing rope 6 and the stabilizing rope 7 are galvanized steel wire ropes.
In this example, the combined vibrator 4 includes an upper vibrator 8, a lower vibrator 9, and an insulating connector 10; the upper vibrator 8 is connected with the bearing cable 6 in a hanging mode, the lower vibrator 9 is connected with the stabilizing cable 7 in a hanging mode, and the upper vibrator 8 and the lower vibrator 9 are fixedly connected through the insulating connecting piece 10. Insulation between the upper and lower vibrators 8, 9 is ensured by the insulating connector 10.
In this example, the upper vibrator 8 and the lower vibrator 9 are cage structures, and the cage structures are formed by welding aluminum pipes. Specifically, the cage structure includes a vibrator frame 13 composed of a plurality of first rod bodies and a second rod body fixedly connected between different first rod bodies, and the diameter of the first rod body is larger than that of the second rod body. In order to further widen the bandwidth of the antenna, the cross-sectional dimensions of the upper element 8 and the lower element 9 are enlarged, the outer dimensions of the upper element 8 and the lower element 9 are enlarged, and the weight of the combined element 4 is reduced.
In this example, the insulated connector 10 is a weather-resistant non-metallic connector, preferably a plastic part.
During on-site construction, the first tower frame 1 and the second tower frame 2 are assembled on the ground, and then are hoisted by a crane and are installed at a designated fixed point. The combined vibrator 4 is assembled on the ground and fixed at the specified positions of the bearing cable 6 and the stabilizing cable 7, then the combined vibrator is integrally hoisted, and finally the bearing cable 6 and the stabilizing cable 7 are tensioned.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A long-span suspension cable structure log periodic antenna is characterized by comprising a first tower (1), a second tower (2), a combined oscillator (4), a bearing cable (6) and a stabilizing cable (7), wherein the bearing cable is also used for signal transmission; the combined vibrator (4) is hung on a bearing cable (6), one end of the bearing cable (6) is fixed on the first tower (1), and the other end of the bearing cable is connected with the second tower (2) in a sliding mode and is loaded with a first weight (5); the combined vibrator (4) is also mounted on a stabilizing cable (7), one end of the stabilizing cable (7) is fixed on the second tower (2), and the other end of the stabilizing cable is connected with the first tower (1) in a sliding manner and is loaded with a second weight (11); the bearing cable (6) is positioned above the stabilizing cable (7).
2. The long-span suspension cable structure log periodic antenna is characterized in that the combined oscillator (4) comprises an upper oscillator (8), a lower oscillator (9) and an insulating connecting piece (10); the upper vibrator (8) is connected with the bearing cable (6) in a hanging mode, the lower vibrator (9) is connected with the stabilizing cable (7) in a hanging mode, and the upper vibrator (8) is fixedly connected with the lower vibrator (9) through the insulating connecting piece (10).
3. A large span suspension cable structure log periodic antenna according to claim 2, characterized in that the upper element (8) and the lower element (9) are cage structures.
4. The long-span suspension cable structure log periodic antenna as claimed in claim 3, wherein the cage structure is welded by aluminum tubes.
5. A long-span suspension cable structure log periodic antenna according to claim 4, characterized in that the cage structure comprises a dipole frame (13) consisting of several first rods and second rods fixedly connected between different first rods, the diameter of the first rods being larger than the diameter of the second rods.
6. The long-span catenary configuration log-periodic antenna of claim 2, wherein the dielectric connector (10) is a weatherable non-metallic connector.
7. The long-span catenary configuration log-periodic antenna of any of claims 1-6, wherein the sliding connection is a connection formed by pulleys.
8. The long-span suspension cable structure log periodic antenna as claimed in any one of claims 1 to 6, wherein the first tower (1) and the second tower (2) each comprise a plurality of tower sections (12) fixedly connected one above the other.
9. The long span catenary configuration log-periodic antenna of claim 8, wherein the tower sections (12) comprise a frame of a plurality of first tubes and a second tube fixedly connected between different first tubes, the first tubes having a diameter greater than the diameter of the second tubes.
10. The long-span suspension cable structure log periodic antenna as claimed in any one of claims 1 to 6, wherein the bearing cable (6) and the stabilizing cable (7) are galvanized steel wire ropes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021404401.0U CN212783756U (en) | 2020-07-16 | 2020-07-16 | Large-span suspension cable structure log periodic antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021404401.0U CN212783756U (en) | 2020-07-16 | 2020-07-16 | Large-span suspension cable structure log periodic antenna |
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| Publication Number | Publication Date |
|---|---|
| CN212783756U true CN212783756U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021404401.0U Active CN212783756U (en) | 2020-07-16 | 2020-07-16 | Large-span suspension cable structure log periodic antenna |
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| CN (1) | CN212783756U (en) |
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- 2020-07-16 CN CN202021404401.0U patent/CN212783756U/en active Active
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