CN-224232908-U - Multi-feed multi-mode antenna convenient to erect

Abstract

The utility model discloses a multi-feed multi-mode antenna convenient to erect, which comprises a center mast, a multi-mode device cage, a cross brace and a vibrator. The center mast is provided with a multimode device cage for accommodating the multimode device, the outer wall of the mast is provided with a transverse support fixing support lug, and the transverse support is connected to the transverse support fixing support lug in a hinging mode. The transverse support fixing support lugs are provided with transverse support mounting holes and transverse support fixing holes, when the antenna is erected, the transverse support is folded to the vicinity of the mast through the mounting holes, the multimode device and the multimode device cage are avoided, so that an installer can conveniently fix the vibrator, and when the vibrator is installed, the transverse support is moved to the fixing holes through the mounting holes to be unfolded and fixed, so that the antenna forms a stable umbrella-shaped structure. The design can effectively avoid the cross brace from interfering with the multimode device, reduces the risk of cross brace breakage, simplifies the erection step, improves the installation efficiency and the reliability, enhances the overall stability through the cooperation of the light structure and the pull rope, and has the advantages of reasonable structure, convenient operation and strong adaptability.

Inventors

• SHEN XIAOQI
• ZHANG XIMENG
• WANG ZHANHAO
• CHEN JINGTAO

Assignees

• 河南爱科瑞特电子科技有限公司

Dates

Publication Date

20260512

Application Date

20250904

Claims (6)

1. 1. A multi-feed multi-mode antenna convenient to erect comprises a center mast (2), a multi-mode device (7), a multi-mode device cage (1), a cross brace (3) and a vibrator (4), and is characterized in that the multi-mode device cage (1) is arranged on the center mast (2), the multi-mode device (7) is placed in the multi-mode device cage (1), cross brace fixing lugs (5) are arranged in the circumferential direction of the center mast (2), the cross brace fixing lugs (5) are located below the multi-mode device cage (1), the cross brace (3) are connected to the cross brace fixing lugs (5) in a hinging mode, cross brace mounting holes (11) and cross brace fixing holes (9) are formed in the cross brace fixing lugs (5), the cross brace mounting holes (11) are located on the outer sides of the cross brace fixing holes (9), the cross brace (3) are hinged and folded towards the center mast (2) through the cross brace mounting holes (11), and the cross brace (3) are moved to the cross brace fixing holes (9) and are fixed, and therefore the cross brace (3) is unfolded.
2. 2. A multi-feed multi-mode antenna convenient to erect as set forth in claim 1, wherein the cross brace fixing lugs (5) are integrally welded or cast on the center mast (2), grooves (10) are formed in the cross brace fixing lugs (5), and the grooves (10) are located between the cross brace mounting holes (11) and the cross brace fixing holes (9).
3. 3. A multi-feed multi-mode antenna convenient to erect according to claim 1, wherein the cross brace (3) is made of a lightweight alloy material.
4. 4. A multi-feed multi-mode antenna convenient to erect as set forth in claim 1, wherein said cross brace (3) is connected to said cross brace mounting holes (11) or said cross brace fixing holes (9) by a pin, a pin or a quick plug structure.
5. 5. The conveniently-erected multi-feed multi-mode antenna according to claim 1, wherein a pull rope (12) is matched between the transverse support (3) and the lower end fixing surface of the antenna.
6. 6. The multi-feed multi-mode antenna convenient to erect according to claim 1 is characterized in that a mast base (6) is arranged at the lower end of the central mast (2), the mast base (6) is fixed on the ground and used for supporting the central mast (2), the central mast (2) adopts a segmented structure, and segments of the central mast (2) are connected through flanges (8).

Description

Multi-feed multi-mode antenna convenient to erect Technical Field The utility model relates to the technical field of antenna erection, in particular to a multi-feed multi-mode antenna convenient to erect. Background A multi-feed multimode antenna is an antenna in which different modes (or different states of the same mode) are excited through a plurality of feed ports to achieve high-performance radiation characteristics. The antenna is excited by adopting a plurality of feed ports, and the amplitude and the phase of different ports can be independently controlled, so that the working flexibility and the radiation performance of the antenna are improved. In the short-wave frequency range, the caliber of a common multi-feed multi-mode antenna can generally reach 18 meters, the erection height is about 15 meters, and the whole structure is in a vertically inverted umbrella shape. The antenna generally comprises 6 cross braces (umbrella ribs), a plurality of vibrators, usually 4 vibrators, are spirally wound around a central mast, and the vibrators are fixed on the cross braces according to positions, so that the antenna is in an inverted cone shape as a whole. In the process of erecting the antenna, a transverse brace (umbrella rib) is hinged on a central mast, then the transverse brace is folded to a position close to the central mast, and an erector fixes vibrators on the transverse brace in sequence from top to bottom. After the vibrator is fixed, the transverse support is unfolded, so that the antenna is unfolded in an umbrella shape, and the whole erection is completed. The multi-fed multimode antenna typically also includes a multimode device. For short wave antennas, the size of the multimode device is typically large, typically around 300mm in diameter, and the multimode device is typically arranged in a central mast inside the antenna. Because the multimode device has a larger volume, when the cross brace is folded inwards in the antenna erection process, the cross brace is easy to interfere with the multimode device, so that the cross brace cannot be pulled smoothly, even the cross brace is likely to be broken, the installation efficiency and the structural reliability of the antenna are seriously affected, and therefore, an improved technology is urgently needed in the market to solve the problems. Disclosure of utility model The technical problem to be solved by the utility model is to overcome the existing defects, and provide a multi-feed multi-mode antenna convenient to erect, wherein a transverse support installation position and a transverse support fixing position are arranged on a central mast, when the antenna is erected, the transverse support is fixed on the transverse support installation position, after the transverse support is opened, the transverse support is moved to the transverse support fixing position, and the antenna is erected, so that the problems in the background technology can be effectively solved. The multi-feed multi-mode antenna comprises a central mast, a multi-mode device cage, a transverse support and a vibrator, wherein the multi-mode device cage is arranged on the central mast, the multi-mode device is placed in the multi-mode device cage, transverse support fixing lugs are arranged in the circumferential direction of the central mast, the transverse support fixing lugs are arranged below the multi-mode device cage, the transverse support is connected to the transverse support fixing lugs in a hinging mode, transverse support mounting holes and transverse support fixing holes are formed in the transverse support fixing lugs, the transverse support mounting holes are formed in the outer sides of the transverse support fixing holes, the transverse support is hinged through the transverse support mounting holes and folded towards the central mast, and the transverse support is moved to the transverse support fixing holes through the transverse support mounting holes and is fixed, so that the transverse support is unfolded. Specifically, when the antenna is erected, the transverse support is hinged and folded to the vicinity of the central mast through the transverse support mounting hole, so that the transverse support can avoid the multimode device and the multimode device cage and is vertically placed so as to mount the vibrator, and after the vibrator is mounted, the transverse support is moved to the transverse support fixing hole from the transverse support mounting hole and is fixed, and the transverse support is unfolded, so that the antenna is erected. The vibrators are spirally wound, uniformly arranged on the central mast and unfolded in an inverted cone shape, and the structure is a conventional technology. Further, the cross brace fixing support lugs are integrally welded or cast on the central mast, grooves are formed in the cross brace fixing support lugs and located between the cross brace mounting holes and the cross brace fixing holes, and the groo