Large antenna framework and assembling method thereof

Abstract

The application discloses a large antenna framework and an assembling method thereof. The antenna framework comprises a main bearing framework, a plurality of antenna mounting pieces and a framework splicing assembly. The main bearing framework comprises a plurality of assembling modules. The antenna mounting pieces and the framework splicing assembly are arranged on the assembling modules. The antenna array is mounted on the main bearing framework through the antenna mounting pieces. The plurality of antenna frameworks are connected along the up-down direction and the left-right direction of the main bearing framework through the framework splicing assembly. In the application, the flange mounting surface of the assembling module is precisely processed in a factory and is produced in a modular way. Therefore, the antenna mounting surface precision after the antenna framework is erected is effectively improved. The size expansion of the antenna framework is realized through vertical connecting flanges and horizontal connecting flanges. The high-precision assembling mode of block assembling, pre-connection, preliminary positioning and final positioning is adopted, so that the on-site assembling efficiency of the framework is improved.

Description

Technical Field

[0001] This invention relates to the field of radar antenna technology, specifically to a large antenna frame and its assembly method. Background Technology

[0002] For ultra-large radar antenna arrays, the antenna frame, as the main supporting structure, is typically made of steel or cast concrete. The installation involves meticulous adjustments to the point antenna mounting surface. Radar antenna arrays are large, require high precision, and are complex to install. The antenna frame is the foundation of the entire antenna assembly; the precision achievable after the antenna frame is installed determines the overall precision of the antenna. Current technologies suffer from several limitations: firstly, on-site construction of the antenna frame is time-consuming and susceptible to environmental influences; secondly, once the antenna frame is erected, subsequent expansion of the antenna's scale is impossible, resulting in significant limitations.

[0003] In view of the above-mentioned defects, the inventors of this invention have finally obtained this invention after a long period of research and practice. Summary of the Invention

[0004] To address the aforementioned technical deficiencies, this invention provides a large antenna frame and its assembly method.

[0005] A large antenna frame includes a main load-bearing frame, multiple antenna mounting components, and a frame splicing assembly. The main load-bearing frame includes multiple assembly modules. The antenna mounting components and the frame splicing assembly are both disposed on the multiple assembly modules. The antenna array is mounted on the main load-bearing frame through the multiple antenna mounting components. The multiple antenna frames are connected along the vertical and horizontal directions of the main load-bearing frame through the frame splicing assembly.

[0006] Furthermore, the multiple assembly modules are assembled to form a cuboid structure. The multiple assembly modules include multiple longitudinal beams and cross beams. The multiple longitudinal beams are equally spaced along the length direction of the main load-bearing frame. The cross beams are located between two adjacent longitudinal beams. The two ends of the cross beams are respectively connected to two adjacent longitudinal beams. The multiple antenna mounting components and skeleton splicing components are equally spaced along the length direction of the multiple cross beams and longitudinal beams.

[0007] Furthermore, the assembly module also includes a diagonal support, one end of which is connected to a crossbeam and the other end to a longitudinal beam. The crossbeam and the longitudinal beam are perpendicular to each other, and the diagonal support, the crossbeam, and the longitudinal beam are welded together to form a triangular structure.

[0008] Furthermore, the antenna mounting component is an antenna mounting flange, and multiple antenna mounting flanges are disposed on the front end face of the main load-bearing frame, with the multiple antenna mounting flanges being equally spaced along the length direction of the longitudinal beam and the transverse beam.

[0009] Furthermore, the plurality of the frame splicing components include a plurality of vertical connecting flanges, horizontal connecting flanges and frame fixing flanges. The plurality of vertical connecting flanges are disposed on the upper and lower end faces of the main load-bearing frame, the plurality of horizontal connecting flanges are disposed on the left and right end faces of the main load-bearing frame, and the plurality of frame fixing flanges are disposed on both sides of the rear end face of the main load-bearing frame.

[0010] Furthermore, the plurality of vertical connecting flanges are respectively located at the middle and both sides of the upper and lower end faces of the main load-bearing frame. The vertical connecting flange located at the middle position is provided with a circular tapered pin, and the vertical connecting flange located at both sides is provided with a semi-circular tapered pin.

[0011] Furthermore, the antenna frame also includes a wiring assembly, which includes a wiring groove and a wiring hole. The wiring groove is disposed at the bottom of the main load-bearing frame, and the wiring hole is disposed along the inner periphery of the main load-bearing frame. The wiring groove and the wiring hole are connected.

[0012] Furthermore, the interior of the main load-bearing frame is hollow, forming a maintenance passage.

[0013] Furthermore, the main load-bearing frame is equipped with safety railings to ensure the personal safety of testing and maintenance personnel.

[0014] A method for assembling a large antenna frame as described above includes the following steps:

[0015] S1: First, align the multiple antenna frames of the first layer left and right, then insert a bolt into the connection hole of the horizontal connecting flange on the main load-bearing frame of each antenna frame to partially tighten it, i.e., not fully tighten it, to achieve the pre-connection between the multiple antenna frames of the first layer.

[0016] S2: Install the positioning pin into the positioning hole of the horizontal connecting flange, and then tighten the bolts installed in step S1 to achieve the initial positioning of the splicing position of multiple antenna frames;

[0017] S3: Remove the positioning pin from step S2, then install the positioning screw at the position where the positioning pin was removed, and tighten the positioning screw to complete the final positioning of the splicing position of multiple antenna frames on the same layer. Then install the remaining bolts at the other connection holes of the horizontal connecting flange and tighten them to complete the assembly between multiple antenna frames on the first layer.

[0018] S4: Install circular tapered pins at the positioning holes of the vertical connecting flanges in the middle of the upper end face of the first layer antenna frame, and install semi-circular tapered pins at the positioning holes of the vertical connecting flanges on the left and right sides of the upper end face of the first layer antenna frame.

[0019] S5: Lift the pre-installed antenna frame into the second layer and use its own weight to guide and position the circular and semi-circular tapered pins of the corresponding first-layer antenna frame to the corresponding positioning holes in the vertical connecting flange of the antenna frame in the second layer. Then, tighten the bolts in the connecting holes in the vertical connecting flange using a torque wrench.

[0020] S6: Repeat steps S1 to S3 to assemble multiple antenna frames in the second layer, and so on to complete the overall assembly of the multi-layer antenna frames.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. Compared with traditional steel and concrete large antenna frames, the main load-bearing frame in this invention is composed of multiple assembly modules. The flange mounting surfaces of the multiple assembly modules are precision machined in the factory and produced in a modular manner. The on-site assembly method effectively improves the accuracy of the antenna mounting surface after the antenna frame is erected. By setting vertical connecting flanges and horizontal connecting flanges on the upper and lower end faces and the left and right end faces of the main load-bearing frame respectively, the antenna frame can be expanded in two dimensions according to the needs of the antenna scale.

[0023] 2. This invention adopts a high-precision assembly method that uses multiple frames to achieve the same or multiple layers of modular assembly, uses bolts to partially tighten for pre-connection, uses the taper of the positioning pin for preliminary positioning, and uses positioning pins and positioning holes to achieve final positioning. The accuracy of the antenna mounting surface does not need to be adjusted again, and some installation accuracy that is less sensitive to antenna performance is appropriately released, thereby improving the efficiency of on-site frame assembly.

[0024] 3. The antenna frame in this invention adopts an internal hollow design, providing a spacious personnel maintenance passage. The equipment cable is installed at the bottom, which not only provides good protection for the cable, but also makes it easy to lay and maintain, and improves the aesthetics of the frame. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a large antenna frame according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the back and bottom of the antenna frame according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the maintenance channel according to an embodiment of the present invention.

[0028] The numbers in the diagram represent:

[0029] 1-Main load-bearing frame; 2-Crossbeam; 3-Longitudinal beam; 4-Diagonal brace; 5-H-shaped beam module; 6-U-shaped beam module; 7-Antenna mounting flange; 8-Horizontal connecting flange; 9-Vertical connecting flange; 10-Frame fixing flange; 11-Circular tapered pin; 12-Semi-circular tapered pin; 13-Floor; 14-Cable tray; 15-Cable hole; 16-Safety railing; 17-Maintenance passage. Detailed Implementation

[0030] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1 As shown in this embodiment, a large antenna frame is described. The antenna frame has an overall cuboid structure and is mainly constructed by welding profiles. This antenna frame is large in size and numerous. To facilitate rapid installation, the main load-bearing frame 1 includes multiple assembly modules. These modules are combined and welded to form the overall frame. The materials for these assembly modules are readily available, resulting in low manufacturing costs and suitability for modular production. To ensure the overall steel strength of the frame structure, the assembly modules include longitudinal beams 3, transverse beams 2, and diagonal supports 4, assembled using a segmented and then spliced ​​structure.

[0033] Specifically, the longitudinal beams 3 are evenly spaced along the length of the antenna frame, and the crossbeams 2 are located between two adjacent longitudinal beams 3. The two ends of the crossbeams 2 are connected to the middle of the two longitudinal beams 3 respectively to form H-shaped beam modules 5. The ends of the two adjacent longitudinal beams 3 are connected to the ends of the corresponding crossbeams 2 respectively to form U-shaped beam modules 6. The H-shaped beam modules 5 and U-shaped beam modules 6 are arranged perpendicularly to each other, and the ends of the H-shaped beam modules 5 are welded to the ends of the U-shaped beam modules 6. Because the H-shaped beam modules 5 have good rigidity and are lightweight, they are typically used in large steel structures. The U-shaped beam modules 6 have a flat exterior, allowing for flange welding, and a large internal space, which can be used for wiring. The flange mounting surfaces of multiple assembly modules are precision machined in the factory and assembled on-site, effectively improving the accuracy of the antenna mounting surface after the frame is erected.

[0034] To enhance the stability of the assembled modules, one end of the diagonal support 4 is connected to the crossbeam 2, and the other end is connected to the longitudinal beam 3. The crossbeam 2 and the longitudinal beam 3 are perpendicular to each other. The diagonal support 4, the crossbeam 2, and the longitudinal beam 3 form a triangular shape. The crossbeam 2, the longitudinal beam 3, and the diagonal support 4 are connected by welding. The crossbeam 2 and the longitudinal beam 3 are spliced ​​together to form an H-shaped beam module 5 and a U-shaped beam module 6. The diagonal support 4 is used to enhance the stability of the antenna frame.

[0035] Example 2

[0036] In this embodiment, as Figure 1As shown, the antenna frame is a cuboid structure with six end faces, which serve as flange mounting surfaces. After precision machining in the factory, it can meet the requirements for high-precision assembly and antenna installation.

[0037] The antenna frame is fitted with frame fixing flanges 10 on both sides of the rear end face. The frame fixing flanges 10 are connected to external mechanisms to fix the assembled antenna frame, so that the external mechanism of the assembled antenna frame is at different angles to the horizontal plane.

[0038] The antenna frame has multiple vertical connecting flanges 9 on its upper and lower end faces, and multiple horizontal connecting flanges 8 on its left and right end faces. Antenna frames joined in pairs along the horizontal direction are connected via the horizontal connecting flanges 8, and antenna frames joined in pairs along the vertical direction are connected via the vertical connecting flanges 9. This allows for expansion of the antenna frame size in all four directions (up, down, left, and right) according to the antenna's dimensions.

[0039] Specifically, the upper surface of the antenna frame is equipped with three sets of vertical connecting flanges 9 with different functional positioning. One set is located in the middle of the upper surface of the antenna frame, and a circular tapered pin 11 is installed in the positioning hole of this set of vertical connecting flanges 9. The other two sets of vertical connecting flanges 9 are located on both sides of the upper surface of the antenna frame, and semi-circular tapered pins 12 are installed in the positioning holes of these two sets of vertical connecting flanges 9. These three sets of positioning tapered pins have different functional positioning. The circular tapered pin 11 is used to position the upper and lower layers of the frame, and the semi-circular tapered pin 12 is used to prevent the frame surface from bending due to excessive length of the antenna frame. As multiple antenna frames of the same layer are spliced, the overall length of the antenna frame of the same layer increases, and the accuracy of the positioning holes decreases. Since the antenna performance has high requirements for the flatness of the antenna mounting surface, in order to ensure the accuracy of the antenna array, semi-circular tapered pins 12 are used in the length direction during splicing. This appropriately releases the accuracy of the antenna frame in the length direction without affecting the antenna performance, which can improve the on-site assembly efficiency of the antenna frame and is beneficial for the installation of multi-layer antenna frames.

[0040] Multiple horizontal connecting flanges 8 are equally spaced on the left and right end faces of the antenna frame. Multiple antenna frames on the left and right sides are connected through the horizontal connecting flanges 8 to realize the horizontal expansion of the antenna frame.

[0041] The frame fixing flange 10, horizontal connecting flange 8, and vertical connecting flange 9 are all welded to the main load-bearing frame 1.

[0042] The front end face of the antenna frame serves as the antenna mounting surface, and an antenna mounting component is provided on the front end face of the antenna frame.

[0043] Specifically, the antenna mounting component is an antenna mounting flange 7, which is equidistantly arranged along the length of the longitudinal beam 3 and the transverse beam 2. Multiple antenna mounting flanges 7 are arranged in an array. The antenna array is mounted on the main load-bearing frame 1 through the antenna mounting flange 7. Since the antenna mounting surfaces are on the same plane and the precision requirements are high, using the antenna mounting flange 7 is not only economical and practical but also helps to improve the accuracy of the antenna array. Existing antenna mounting components can also use height-adjustable transition supports, but they are costly, have long adjustment times, and low assembly efficiency.

[0044] In existing technologies, it is difficult to guarantee the accuracy of the antenna mounting surface, and the accuracy adjustment is challenging. However, in this embodiment, the six end faces of the antenna frame serve as the frame flange mounting surface. After precision machining in the factory, they can meet the high-precision assembly requirements and antenna installation requirements. Based on the high-precision assembly method on site, the accuracy of the antenna mounting surface does not require secondary adjustment, thus improving on-site assembly efficiency.

[0045] Example 3

[0046] Existing radar systems have numerous cables, which, when exposed, not only affect aesthetics but also pose safety hazards. In this embodiment, as... Figure 2 As shown, the wiring assembly is also designed to fully utilize the structural features of the main load-bearing frame 1. The wiring assembly includes a wiring trough 14 and a cable passage hole 15. A floor 13 is provided at the bottom of the antenna frame, which is located above the U-shaped beam module 6. The wiring trough 14 is provided inside the U-shaped beam module 6. The wiring trough 14 is correspondingly provided with the cable passage hole 15. The cable passage hole 15 is provided at equal intervals along the inner periphery of the main load-bearing frame 1. The wiring trough 14 and the cable passage hole 15 are connected. Cables are installed inside the wiring trough 14. The cables pass through the cable passage hole 15 to complete the cable layout of the entire antenna frame, which facilitates later cable maintenance, provides good protection for the cables, is easy to lay and maintain, and also improves the aesthetics of the antenna frame.

[0047] As a modular assembly of the system, the antenna frame reduces the workload of on-site equipment installation by pre-assembling the internal equipment and cables in the factory.

[0048] In this embodiment, as Figure 3 As shown, the antenna frame has a hollow interior design, which facilitates providing a spacious personnel maintenance passage 17.

[0049] A safety guardrail 16 is installed on the back of the antenna frame. The safety guardrail 16 is set on the main load-bearing frame 1 to ensure the personal safety of testing and maintenance personnel at high altitudes.

[0050] Example 4

[0051] The antenna frame requires high precision in welding and processing. Pre-installing the antenna frame in advance and arranging the installation sequence of the antenna frame in a reasonable manner can not only shorten the antenna installation time, but also achieve higher installation accuracy.

[0052] In this embodiment, a method for assembling a large antenna frame includes the following steps:

[0053] S1: First, align the multiple antenna frames in the first layer left and right, then insert a bolt into the connection hole of the horizontal connecting flange 8 on the main load-bearing frame 1 of each antenna frame, so as to achieve the pre-connection between the multiple antenna frames in the first layer.

[0054] S2: After installing the positioning pin into the positioning hole of the horizontal connecting flange 8, tighten the bolts installed in step S1 to achieve the initial positioning of the splicing position of multiple antenna frames.

[0055] S3: Remove the positioning pin from step S2, then install the positioning screw at the position where the positioning pin was removed, and tighten the positioning screw to complete the final positioning of the splicing position of multiple antenna frames on the same layer. Then install the remaining bolts at the other connection holes of the horizontal connecting flange 8 and tighten them to complete the assembly between multiple antenna frames on the first layer.

[0056] S4: Install circular tapered pins 11 at the positioning holes of the vertical connecting flanges 9 in the middle of the upper end face of the first layer antenna frame, and install semi-circular tapered pins 12 at the positioning holes of the vertical connecting flanges 9 on the left and right sides of the upper end face of the first layer antenna frame.

[0057] S5: Lift the antenna frame pre-installed in the second layer and use its own weight to guide and position the circular tapered pin 11 and semi-circular tapered pin 12 of the corresponding first layer antenna frame to the positioning holes in the vertical connecting flange 9 of the antenna frame in the second layer. Then tighten the bolts located in the connecting holes in the vertical connecting flange 9 using a torque wrench.

[0058] S6: Repeat steps S1 to S3 to assemble multiple antenna frames in the second layer, and so on to complete the assembly of multiple antenna frames.

[0059] This invention discloses a method for assembling a large antenna frame. It employs a modular assembly approach, involving pre-connection, preliminary positioning, and final positioning to assemble multiple antenna frames. The method utilizes semi-tight bolts to pre-connect multiple antenna frames on the same layer, uses the taper of positioning pins to initially position the upper and lower layers of antenna frames, and employs positioning pins and positioning holes to achieve final positioning of the upper and lower layers of antenna frames. This high-precision assembly method appropriately reduces the installation precision required to accommodate less sensitive antenna performance. Since antenna performance has high requirements for the flatness of the antenna mounting surface and low sensitivity in the length direction, a semi-circular tapered pin 12 is used in the length direction during assembly. This appropriately reduces the installation precision in the length direction of the antenna frame without affecting antenna performance, while simultaneously improving the efficiency of on-site frame assembly.

[0060] The above description is merely a preferred embodiment of the present invention and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A large antenna frame, characterized in that, The device includes a main load-bearing frame, multiple antenna mounting components, and a skeleton splicing assembly. The main load-bearing frame includes multiple assembly modules. The antenna mounting components and the skeleton splicing assembly are both disposed on the multiple assembly modules. The antenna array is mounted on the main load-bearing frame through the multiple antenna mounting components. The multiple antenna skeletons are connected along the vertical and horizontal directions of the main load-bearing frame through the skeleton splicing assembly. Multiple assembly modules are assembled to form a cuboid structure. Each assembly module includes multiple longitudinal beams and cross beams. The multiple longitudinal beams are equally spaced along the length of the main load-bearing frame. The cross beams are located between two adjacent longitudinal beams, and the two ends of the cross beams are respectively connected to the two adjacent longitudinal beams. Multiple antenna mounting components and frame splicing assemblies are equally spaced along the length of the multiple cross beams and longitudinal beams. The assembly module also includes a diagonal support, one end of which is connected to a crossbeam and the other end to a longitudinal beam. The crossbeam and the longitudinal beam are perpendicular to each other. The diagonal support, the crossbeam, and the longitudinal beam are welded together to form a triangular structure. The antenna mounting component is an antenna mounting flange, and multiple antenna mounting flanges are disposed on the front end face of the main load-bearing frame. The multiple antenna mounting flanges are equally spaced along the length direction of the longitudinal beam and the transverse beam. The plurality of said skeleton splicing components include a plurality of vertical connecting flanges, horizontal connecting flanges and skeleton fixing flanges. The plurality of said vertical connecting flanges are disposed on the upper and lower end faces of the main load-bearing frame, the plurality of said horizontal connecting flanges are disposed on the left and right end faces of the main load-bearing frame, and the plurality of said skeleton fixing flanges are disposed on both sides of the rear end face of the main load-bearing frame. The multiple vertical connecting flanges are respectively located in the middle and on both sides of the upper and lower end faces of the main load-bearing frame. The vertical connecting flange located in the middle position is provided with a circular tapered pin, and the vertical connecting flange located on both sides is provided with a semi-circular tapered pin. The antenna frame also includes a wiring assembly, which includes a wiring groove and a wiring hole. The wiring groove is located at the bottom of the main load-bearing frame, and the wiring hole is located along the inner periphery of the main load-bearing frame. The wiring groove and the wiring hole are connected.

2. The large antenna frame as described in claim 1, characterized in that, The interior of the main load-bearing frame is hollow, forming a maintenance passage.

3. The large antenna frame as described in claim 1, characterized in that, The main load-bearing frame is equipped with safety railings to ensure the personal safety of testing and maintenance personnel.

4. A method for assembling a large antenna frame as described in any one of claims 1-3, characterized in that, Includes the following steps: S1: First, align the multiple antenna frames of the first layer left and right, then insert a bolt into the connection hole of the horizontal connecting flange on the main load-bearing frame of each antenna frame to partially tighten it, i.e., not fully tighten it, to achieve the pre-connection between the multiple antenna frames of the first layer. S2: Install the positioning pin into the positioning hole of the horizontal connecting flange, and then tighten the bolts installed in step S1 to achieve the initial positioning of the splicing position of multiple antenna frames; S3: Remove the positioning pin from step S2, then install the positioning screw at the position where the positioning pin was removed, and tighten the positioning screw to complete the final positioning of the splicing position of multiple antenna frames on the same layer. Then install the remaining bolts at the other connection holes of the horizontal connecting flange and tighten them to complete the assembly between multiple antenna frames on the first layer. S4: Install circular tapered pins at the positioning holes of the vertical connecting flanges in the middle of the upper end face of the first layer antenna frame, and install semi-circular tapered pins at the positioning holes of the vertical connecting flanges on the left and right sides of the upper end face of the first layer antenna frame. S5: Lift the pre-installed antenna frame into the second layer and use its own weight to guide and position the circular and semi-circular tapered pins of the corresponding first-layer antenna frame to the corresponding positioning holes in the vertical connecting flange of the antenna frame in the second layer. Then, tighten the bolts in the connecting holes in the vertical connecting flange using a torque wrench. S6: Repeat steps S1~S3 to assemble multiple antenna frames in the second layer, and so on to complete the overall assembly of the multi-layer antenna frames.

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