Large-cantilever antenna skeleton and antenna system

Abstract

The invention discloses a large-cantilever antenna skeleton and an antenna system. The antenna skeleton comprises a tower drum, and horizontal cross arms, rigid-flexible coupling skeletons and oscillator supporting skeletons which are symmetrically arranged by taking the tower drum as a center, the tower drum is formed by longitudinally and detachably connecting a plurality of first tower drum sections and second tower drum sections, and the drum wall from the tower drum section located at the top to the tower drum section located at the bottom is sequentially thickened; each first tower drum section comprises a first tower drum section body, and a first bearing device and a second bearing device which are connected with the inner wall and the outer wall of the first tower drum section body and are symmetrically arranged; the longitudinal tower drum is used as a vertical support, a horizontal cross arm is used as a horizontal support, one end of the horizontal cross arm is connected with the first bearing device and the second bearing device to achieve stress offset, and the other end of the horizontal cross arm is fixedly connected with the rigid-flexible coupling framework and the vibrator supporting framework to form closed stress. According to the large-cantilever antenna skeleton and the antenna system disclosed by the invention, the reliability of the antenna skeleton can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of radar antennas, and in particular to a large cantilever antenna frame and an antenna system. Background Art

[0002] Due to the large size of the broadcast antenna array, in order to meet the large-span support in height and width, a large cantilever frame support structure of several tens of meters in length is generally used. Its root is connected to the support body. In order to meet the stability of the large-span structure, the root generally adopts a local reinforcement design, usually by adding a thick frame reinforcement at a local position of the support body, and adding upper and lower diagonal braces for auxiliary reinforcement. It generally involves many types of auxiliary plates and strengthening process means, with high cost, complex structure, heavy weight, and high manufacturing and erection costs.

[0003] Existing large-scale broadcast antenna frames generally use multiple trapezoidal tower structures that are thick at the bottom and thin at the top as the main load-bearing frame. The antenna unit and the reflector are installed and suspended between the tower frames by cables. This type of frame has a large bottom size, poor reliability, short service life, and is relatively difficult to maintain.

[0004] Prior art, patent publication number CN207260726U utility model patent, a lightning protection combined transmission steel pipe tower, the tower body adopts a triangular rod fixed structure of the tower section, easy to disassemble and assemble. And through the anti-sway component, the swing force between the transmission tower butt rods can be distributed to the upper and lower butt rods, thereby reducing the force on the connection end. Summary of the invention

[0005] The technical problem to be solved by the present invention is to solve the problem of poor reliability of the existing large-scale broadcast antenna framework.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A large cantilever antenna frame, comprising a tower 1200, and a horizontal cross arm 300, a rigid-flexible coupling frame 400 and a dipole support frame 500 symmetrically arranged around the tower 1200;

[0008] The tower 1200 is formed by a plurality of first tower sections 1210 and second tower sections 1220 connected longitudinally in a detachable manner, and the wall thickness of the tower section from the top to the bottom gradually increases; each of the first tower sections 1210 includes a first tower section body 100 and a first bearing device 210 and a second bearing device 220 connected to the inner and outer walls of the first tower section body 100 and symmetrically arranged;

[0009] The longitudinal tower 1200 is used as a vertical support, and the horizontal cross arm 300 is used as a horizontal support. One end of the horizontal cross arm 300 is connected to the first load-bearing device 210 and the second load-bearing device 220 to achieve force offset, and the other end is fixedly connected to the rigid-flexible coupling frame 400 and the vibrator support frame 500 to form a closed force.

[0010] In one embodiment of the present invention, the first load-bearing device 210 includes a first force transmission rod 211, a second force transmission rod 212 and a first stiffening ring 213;

[0011] The first dowel rod 211 and the second dowel rod 212 pass through the first tower section body 100 horizontally and symmetrically. Both ends of the first dowel rod 211 and the second dowel rod 212 are located on the outer wall of the first tower section body 100, and both ends are provided with cross arm mounting flanges 214.

[0012] The first stiffening ring 213 is located on the inner wall of the first tower section body 100 and is connected to the first force transmission rod 211 and the second force transmission rod 212 .

[0013] In one embodiment of the present invention, the first bearing device 210 also includes a web mounting assembly 216; the web mounting assembly 216 is fixedly located on the outer wall of the first tower section body 100; a plurality of the web mounting assemblies 216 are respectively located between the first force transmission rod 211 and the second force transmission rod 212, and are all on the same horizontal plane as the first stiffening ring 213 on the first tower section body 100.

[0014] In one embodiment of the present invention, the web rod mounting assembly 216 includes a web rod mounting piece 2161 and a web rod stiffening plate 2162; one end of the web rod stiffening plate 2162 is fixed to the web rod mounting piece 2161, and the other end passes through the wall of the first tower section body 100 and is fixed to the first stiffening ring 213.

[0015] In one embodiment of the present invention, the first bearing device 210 also includes a plurality of groups of local stiffening plate assemblies 2170 mainly composed of a plurality of local stiffening plates 217, and the number of the local stiffening plate assemblies 2170 is determined according to the number of the web rod mounting assemblies 216; the plurality of local stiffening plates 217 are fixedly connected to the first stiffening ring 213 in the first tower section body 100 with the web rod stiffening plate 2162 as the center.

[0016] In an embodiment of the present invention, the horizontal cross arm 300 includes a first-layer horizontal cross arm 310, a second-layer horizontal cross arm 320, and a third horizontal cross arm 330 that are longitudinally connected in sequence on the tower barrel 1200, forming a "rich" - shaped skeleton form transmission path. Among them, the length of the first-layer horizontal cross arm 310 is the smallest, and all three layers of horizontal cross arms are spliced into a frame form using steel pipes. The steel pipe wall thickness at the root position connected to the tower barrel 1200 is the thickest, and the profile density is the highest, while the wall thickness at the end is thin.

[0017] In an embodiment of the present invention, the number of the rigid-flexible coupling skeletons 400 is the same as that of the horizontal cross arms 300, and it includes a first reflecting curtain support 410, a second reflecting curtain support 420, and a third reflecting curtain support 430 that are sequentially connected to the first-layer horizontal cross arm 310, the second-layer horizontal cross arm 320, and the third horizontal cross arm 330 in sequence; it also includes a first cable 440 connected to all reflecting curtain supports, a second cable 450 connected to the horizontal cross arm 300, and a cross arm support 460; the rigid-flexible coupling skeleton 400 can form a rigid-flexible coupling closed stress surface.

[0018] In an embodiment of the present invention, the first reflecting curtain support 410, the second reflecting curtain support 420, and the third reflecting curtain support 430 are respectively located at the tips of the three layers of horizontal cross arms 300, and tensioning devices are provided on the frame structures at the ends and the top tower barrel sections of the first reflecting curtain support 410, the second reflecting curtain support 420, and the third reflecting curtain support 430;

[0019] The first cable 440 is sequentially connected to the tensioning devices on the frame structures of the first reflecting curtain support 410, the second reflecting curtain support 420, the third reflecting curtain support 430, and the top tower barrel section to achieve flexible connection;

[0020] One ends of multiple second cables 450 are respectively fixedly connected to the tower barrel 1200, and the other ends are respectively fixedly connected to the ends of the second-layer horizontal cross arm 320 and the third horizontal cross arm 330 to pull the second-layer horizontal cross arm 320 and the third horizontal cross arm 330;

[0021] One ends of multiple cross arm supports 460 are respectively connected to the first diagonal brace mounting parts 215 and the second diagonal brace mounting parts 1222 on the tower barrel 1200, and the other ends are respectively fixedly connected to the ends of the second-layer horizontal cross arm 320 and the third horizontal cross arm 330 to support the second-layer horizontal cross arm 320 and the third horizontal cross arm 330.

[0022] In one embodiment of the present invention, the vibrator interface surface of the vibrator supporting skeleton 500 includes a first connecting rod 510, a second connecting rod 520 and a vibrator connecting flange 530; one end of a pair of the first connecting rods 510 is fixedly connected to the main structure of the vibrator supporting skeleton 500, and the two first connecting rods 510 are parallel in the horizontal direction; the second connecting rod 520 is an inclined rod, and a pair of the second connecting rods 520 are parallel in the inclined direction, and one end of a pair of the second connecting rods 520 is hinged to the main structure of the vibrator supporting skeleton 500; a pair of the vibrator connecting flanges 530 are respectively connected to the other ends of a pair of the first connecting rods 510 and a pair of the second connecting rods 520.

[0023] In one embodiment of the present invention, a first mounting hole and a second mounting hole are provided on the vibrator connecting flange 530, and one side of the vibrator connecting flange 530 is set at a right angle, with the first mounting hole close to the right angle side; when assembled and used, a connecting line of center points of two adjacent first mounting holes is parallel to the first connecting rod 510; a connecting line of center points of two adjacent second mounting holes is parallel to the second connecting rod 520.

[0024] The present invention also discloses an antenna system, which uses the large cantilever antenna frame as a support for the system.

[0025] Compared with the prior art, the beneficial effects of the present invention are: utilizing the stress characteristics of the skeleton symmetrical structure and adopting a force transmission rod design to effectively offset the large moment effect brought by the cantilever structure, with a simple structure, fewer reinforcing ribs, a simple processing and manufacturing process, and low manufacturing cost.

[0026] The rigid-flexible coupling design is adopted. The main structure adopts the "Feng"-shaped rigid structure, which consists of the main tower, horizontal crossarms, rigid-flexible coupling skeleton and vibrator support skeleton. The periphery is strengthened by tension cables and large struts. In order to ensure the rigidity matching of the rigid-flexible coupling structure, the wall of the main tower adopts a variable thickness design from top to bottom, from flexible to rigid, and the horizontal crossarms on both sides are connected to ensure stress transfer. The single-sided crossarm frame ensures that the overall rigidity gradually changes from strong to weak from the root to the tip by changing the distribution density and specifications of the steel pipes. The vibrator support adopts a variable cross-section frame design, which also ensures a good transition of the overall rigidity. By designing the overall structure with variable rigidity from bottom to top and from root to tip, the entire structure is ensured to have a high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of a large cantilever antenna skeleton according to an embodiment of the present invention.

[0028] Figure 2 It is a schematic diagram of a tower according to an embodiment of the present invention.

[0029] Figure 3It is a schematic diagram of the first tower section of an embodiment of the present invention.

[0030] Figure 4 It is a schematic diagram of a vibrator supporting frame according to an embodiment of the present invention.

[0031] Figure 5 It is a schematic diagram of a vibrator support frame and a vibrator according to an embodiment of the present invention.

[0032] Figure 6 and Figure 7 It is a schematic diagram of assembling two vibrators according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described in conjunction with the accompanying drawings of the specification.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] See also Figures 1 to 3 As shown, the present invention provides a large cantilever antenna frame, including a tower 1200, and a horizontal cross arm 300, a rigid-flexible coupling frame 400 and a vibrator support frame 500 symmetrically arranged with the tower 1200 as the center. The tower 1200 is formed by a plurality of first tower sections 1210 and second tower sections 1220 connected longitudinally in a detachable manner, and the wall of the tower section from the top to the tower section at the bottom becomes thicker in sequence. Each first tower section 1210 includes a first tower section body 100 and a first bearing device 210 and a second bearing device 220 connected to the inner and outer walls of the first tower section body 100 and symmetrically arranged. The longitudinal tower 1200 is used as a vertical support, and the horizontal cross arm 300 is used as a horizontal support. One end of the horizontal cross arm 300 is connected to the first bearing device 210 and the second bearing device 220 to achieve force offset, and the other end is fixedly connected to the rigid-flexible coupling frame 400 and the vibrator support frame 500 to form a closed force.

[0036] See also Figures 1 to 3As shown, in one embodiment of the present invention, the first load-bearing device 210 and the second load-bearing device 220 are symmetrically arranged. To make the description concise, the first load-bearing device 210 is taken as an example, but there is no doubt that the components, connection relationship, position relationship and working principle of the second load-bearing device 220 are the same as those of the first load-bearing device 210. Specifically, the first load-bearing device 210 includes a first force transmission rod 211, a second force transmission rod 212 and a first stiffening ring 213. The first force transmission rod 211 and the second force transmission rod 212 pass through the first tower section body 100 horizontally and symmetrically, and the two ends of the first force transmission rod 211 and the second force transmission rod 212 are located on the outer wall of the first tower section body 100, and a cross arm mounting flange 214 is arranged on both ends. The first tower section body 100 is made of thick steel plate, and its cylinder is perforated, and the first force transmission rod 211 and the second force transmission rod 212 pass through the cylinder wall, so that there are continuous force transmission paths on both sides of the first tower section body 100. The cross arm mounting flange 214 is used to connect with the main pole of the horizontal cross arm.

[0037] The first stiffening ring 213 is located on the inner wall of the first tower section body 100 and is connected to the first force transmission rod 211 and the second force transmission rod 212 , which can improve the axial stability and local torsional strength of the first tower section body 100 .

[0038] The first bearing device 210 also includes a first diagonal brace mounting member 215 , and a plurality of first diagonal brace mounting members 215 are respectively fixed at both ends of the first force transmission rod 211 and the second force transmission rod 212 , and some of the first diagonal brace mounting members 215 pass through the first tower section body 100 and are connected to the first stiffening ring 213 .

[0039] The first bearing device 210 further includes a web mounting assembly 216, which is fixed to the outer wall of the first tower section body 100. The plurality of web mounting assemblies 216 are respectively located between the first force transmission rod 211 and the second force transmission rod 212, and are all on the same horizontal plane as the first stiffening ring 213 on the first tower section body 100.

[0040] The web rod mounting assembly 216 includes a web rod mounting piece 2161 and a web rod stiffening plate 2162. One end of the web rod stiffening plate 2162 is fixed to the web rod mounting piece 2161, and the other end passes through the wall of the first tower section body 100 and is fixed to the first stiffening ring 213. The web rod mounting assembly 216 is used to install the web rods of the horizontal cross arms on both sides, and the web rod stiffening plate 2162 is connected to the first stiffening ring 213 to strengthen the local strength of the installation position of the web rod mounting assembly 216 and release the stress concentration at the connection point.

[0041] The first bearing device 210 further includes multiple groups of local stiffening plate assemblies 2170 mainly composed of a plurality of local stiffening plates 217. The number of local stiffening plate assemblies 2170 is determined according to the number of web member mounting assemblies 216. The multiple local stiffening plates 217 are centered on the web member stiffening plate 2162 and are fixedly connected to the first stiffening ring 213 within the first tower barrel section body 100. The multiple groups of local stiffening plate assemblies 2170 effectively buffer the problem of load concentration, release the stress of local welds, and improve reliability and service life.

[0042] The first tower barrel section 1210 located in the middle of the tower barrel 1200 has tower barrel mounting flanges 218 provided at both ends of its first tower barrel section body 100. The tower barrel mounting flanges 218 are used to dock with other cylinders, and high-strength bolts are used to achieve rapid installation.

[0043] A second diagonal brace mounting member 1222 is fixedly connected to the second tower barrel section body 1221 of the second tower barrel section 1220. The second diagonal brace mounting member 1222 cooperates with the first diagonal brace mounting member 215 to support the horizontal cross arm.

[0044] Please refer to Figures 1 to 7 As shown, in an embodiment of the present invention, the horizontal cross arm 300 includes a first layer of horizontal cross arm 310, a second layer of horizontal cross arm 320, and a third horizontal cross arm 330 that are longitudinally connected in sequence on the tower barrel 1200, forming a "丰" - shaped skeleton form transmission path. Among them, the length of the first layer of horizontal cross arm 310 located at the bottom is the smallest. Through the first force transmission rod 211 and the second force transmission rod 212, with the tower barrel 1200 as the center, left - right symmetry is achieved, and the large moment effects brought by each layer of horizontal cross arm are offset in terms of force. The three - layer horizontal cross arm is spliced into a frame form using steel pipes. The wall thickness of the steel pipes at the root position connected to the tower barrel 1200 is the thickest, and the profile density is the highest, while the wall thickness at the end is thin. That is, for a single - side cross arm itself, from the root to the tip, the diameter and thickness of the spliced steel pipes gradually decrease, and the stiffness gradually weakens.

[0045] The number of rigid - flexible coupling skeletons 400 is the same as the number of horizontal cross arms 300, and includes a first reflector support 410, a second reflector support 420, and a third reflector support 430 that are sequentially connected to the first layer of horizontal cross arm 310, the second layer of horizontal cross arm 320, and the third horizontal cross arm 330 respectively. It also includes a first cable 440 connected to all reflector supports, a second cable 450 connected to the horizontal cross arm 300, and a cross - arm support 460. The rigid - flexible coupling skeleton 400 can form a rigid - flexible coupling closed force - bearing surface.

[0046] The first reflective curtain support 410, the second reflective curtain support 420 and the third reflective curtain support 430 are respectively located at the ends of the three-layer horizontal crossarm 300, and the frame structure on the ends of the first reflective curtain support 410, the second reflective curtain support 420 and the third reflective curtain support 430 and the top tower section is provided with a tensioning device. The first cable 440 is sequentially connected with the tensioning device on the frame structure of the first reflective curtain support 410, the second reflective curtain support 420 and the third reflective curtain support 430 to the top tower section to achieve a flexible connection. One end of a plurality of second cables 450 is respectively fixed to the tower 1200, and the other end is respectively fixed to the ends of the second-layer horizontal crossarm 320 and the third horizontal crossarm 330, so as to pull the second-layer horizontal crossarm 320 and the third horizontal crossarm 330. One end of the multiple cross arm supports 460 is respectively connected to the first diagonal brace mounting member 215 and the second diagonal brace mounting member 1222 on the tower 1200, and the other end is respectively fixed to the ends of the second horizontal cross arm 320 and the third horizontal cross arm 330 to support the second horizontal cross arm 320 and the third horizontal cross arm 330.

[0047] The vibrator interface surface of the vibrator support frame 500 includes a first connecting rod 510, a second connecting rod 520 and a vibrator connection flange 530. One end of a pair of first connecting rods 510 is fixedly connected to the main structure of the vibrator support frame 500, and the two first connecting rods 510 are parallel in the horizontal direction. The second connecting rod 520 is an inclined rod, and the pair of second connecting rods 520 are parallel in the inclined direction, and one end of the pair of second connecting rods 520 is hinged to the main structure of the vibrator support frame 500. Among them, an end connection flange 540 is provided at the end of each of the first connecting rod 510 and the second connecting rod 520 for docking with the vibrator connection flange 530.

[0048] A pair of vibrator connection flanges 530 are respectively connected to the other ends of a pair of first connection rods 510 and a pair of second connection rods 520. A first mounting hole and a second mounting hole are set on the vibrator connection flange 530, and one side of the vibrator connection flange 530 is set at a right angle, and the first mounting hole is close to the right angle side. When assembled and used, the connection line of the center points of two adjacent first mounting holes is parallel to the first connection rod 510, and the connection line of the center points of two adjacent second mounting holes is parallel to the second connection rod 520, which is used to play a role in vertical positioning of the vibrator.

[0049] Compared with the traditional single-sided flange connection, the joint of the vibrator support frame 500 is connected by two-sided four-point connection, which greatly improves the overall rigidity and firmness. The vibrator 600 is connected with the first connecting rod 510 and the second connecting rod 520 to ensure the rigidity matching of the overall structure, ensure the durability and fatigue resistance of the vibrator 600 during long-term service, and greatly improve its service life. The connecting line of the center points of the two adjacent first mounting holes is parallel to the first connecting rod 510 to ensure that the assembled array surface has high verticality and flatness after the vibrator is assembled, thereby improving the installation accuracy. The use of two hinged second connecting rods 520 for repeated tightening can not only improve the assembly efficiency, but also increase the overall strength. The entire vibrator support frame 500 adopts a connecting rod splicing form, which is low in cost, light in weight, easy to install, high in positioning accuracy and reasonable in rigidity design.

[0050] In another embodiment of the present invention, the present invention further provides an antenna system, using the above-mentioned large cantilever antenna frame as the support of the antenna system.

[0051] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0052] The above-described embodiments merely represent implementation methods of the invention. The protection scope of the present invention is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements may be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A large cantilever antenna frame, characterized in that: It comprises a tower (1200), and horizontal cross arms (300), a rigid-flexible coupling frame (400) and a vibrator support frame (500) symmetrically arranged around the tower (1200); The tower (1200) is formed by longitudinally detachably connecting a plurality of first tower sections (1210) and second tower sections (1220), and the wall thickness gradually increases from the tower section at the top to the tower section at the bottom; each of the first tower sections (1210) comprises a first tower section body (100) and a first bearing device (210) and a second bearing device (220) connected to the inner and outer walls of the first tower section body (100) and symmetrically arranged; The longitudinal tower (1200) is used as a vertical support, and the horizontal cross arm (300) is used as a horizontal support. One end of the horizontal cross arm (300) is connected to the first load-bearing device (210) and the second load-bearing device (220) to achieve force offset, and the other end is fixedly connected to the rigid-flexible coupling frame (400) and the vibrator support frame (500) to form a closed force.

2. The large cantilever antenna frame according to claim 1, characterized in that: The first bearing device (210) comprises a first force transmission rod (211), a second force transmission rod (212) and a first stiffening ring (213); The first dowel rod (211) and the second dowel rod (212) pass through the first tower section body (100) in a horizontal and symmetrical manner, and both ends of the first dowel rod (211) and the second dowel rod (212) are located on the outer wall of the first tower section body (100), and both ends are provided with cross arm mounting flanges (214); The first stiffening ring (213) is located on the inner wall of the first tower section body (100) and is connected to the first force transmission rod (211) and the second force transmission rod (212).

3. The large cantilever antenna frame according to claim 2, characterized in that: The first bearing device (210) also includes a web mounting assembly (216); the web mounting assembly (216) is fixedly located on the outer wall of the first tower section body (100); a plurality of web mounting assemblies (216) are respectively located between the first force transmission rod (211) and the second force transmission rod (212), and are all on the same horizontal plane as the first stiffening ring (213) on the first tower section body (100).

4. The large cantilever antenna frame according to claim 3, characterized in that: The web rod mounting assembly (216) comprises a web rod mounting piece (2161) and a web rod stiffening plate (2162); one end of the web rod stiffening plate (2162) is fixed to the web rod mounting piece (2161), and the other end passes through the wall of the first tower section body (100) and is fixed to the first stiffening ring (213).

5. The large cantilever antenna frame according to claim 4, characterized in that: The first bearing device (210) also includes a plurality of groups of local stiffening plate assemblies (2170) mainly composed of a plurality of local stiffening plates (217), and the number of the local stiffening plate assemblies (2170) is determined according to the number of the web rod mounting assemblies (216); the plurality of local stiffening plates (217) are centered on the web rod stiffening plate (2162) and are fixedly connected to the first stiffening ring (213) in the first tower section body (100).

6. The large cantilever antenna frame according to claim 1, characterized in that: The horizontal cross arm (300) includes a first-layer horizontal cross arm (310), a second-layer horizontal cross arm (320), and a third horizontal cross arm (330) longitudinally connected in sequence on the tower barrel (1200), forming a "丰"-shaped skeleton form transmission path. Among them, the length of the first-layer horizontal cross arm (310) is the smallest, and all three layers of horizontal cross arms are spliced into a frame form with steel pipes. The wall thickness of the steel pipes at the root position connected to the tower barrel (1200) is the thickest, the profile density is the highest, and the wall thickness at the end is thin.

7. The large cantilever antenna frame according to claim 6, characterized in that: The number of the rigid-flexible coupling skeletons (400) is the same as that of the horizontal cross arms (300), and includes a first reflector support (410), a second reflector support (420), and a third reflector support (430) connected in sequence to the first-layer horizontal cross arm (310), the second-layer horizontal cross arm (320), and the third horizontal cross arm (330); it also includes a first cable (440) connected to all reflector supports, a second cable (450) connected to the horizontal cross arm (300), and a cross arm support (460); the rigid-flexible coupling skeleton (400) can form a rigid-flexible coupling closed stress surface.

8. The large cantilever antenna frame according to claim 7, characterized in that: The first reflector support (410), the second reflector support (420), and the third reflector support (430) are respectively located at the tips of the three layers of horizontal cross arms (300), and tensioning devices are arranged on the frame structures at the ends and the top tower barrel sections of the first reflector support (410), the second reflector support (420), and the third reflector support (430); The first cable (440) is sequentially connected to the tensioning devices on the frame structures of the first reflector support (410), the second reflector support (420), the third reflector support (430) to the top tower barrel section, realizing flexible connection; One ends of multiple second cables (450) are respectively fixedly connected to the tower barrel (1200), and the other ends are respectively fixedly connected to the ends of the second-layer horizontal cross arm (320) and the third horizontal cross arm (330) for pulling the second-layer horizontal cross arm (320) and the third horizontal cross arm (330); One ends of multiple cross arm supports (460) are respectively connected to the first diagonal brace mounting parts (215) and the second diagonal brace mounting parts (1222) on the tower barrel (1200), and the other ends are respectively fixedly connected to the ends of the second-layer horizontal cross arm (320) and the third horizontal cross arm (330) for supporting the second-layer horizontal cross arm (320) and the third horizontal cross arm (330).

9. The large cantilever antenna frame according to claim 1, characterized in that: The vibrator interface surface of the vibrator support frame (500) comprises a first connecting rod (510), a second connecting rod (520) and a vibrator connecting flange (530); one end of a pair of the first connecting rods (510) is fixedly connected to the main structure of the vibrator support frame (500), and the two first connecting rods (510) are parallel in the horizontal direction; the second connecting rod (520) is an inclined rod, and the pair of the second connecting rods (520) are parallel in the inclined direction, and one end of the pair of the second connecting rods (520) is hinged to the main structure of the vibrator support frame (500); and the pair of the vibrator connecting flanges (530) are respectively connected to the other ends of the pair of the first connecting rods (510) and the pair of the second connecting rods (520).

10. The large cantilever antenna frame according to claim 9, characterized in that: The vibrator connecting flange (530) is provided with a first mounting hole and a second mounting hole, and one side of the vibrator connecting flange (530) is arranged at a right angle, with the first mounting hole close to the right angle side; when assembled and used, a connecting line between the center points of two adjacent first mounting holes is parallel to the first connecting rod (510); and a connecting line between the center points of two adjacent second mounting holes is parallel to the second connecting rod (520).

11. An antenna system, characterized in that: The large cantilever antenna frame described in any one of claims 1 to 10 is used as a support for the system.

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