Precision-controlled scalable large steel structure unit and assembling method

Abstract

The present application relates to radar antenna construction technical field, specifically to a precision control extensible large steel structure unit and assembling method, including steel structure framework for installing and supporting radar antenna, oblique support unit for supporting steel structure framework and ground assembling unit for supporting steel structure framework splicing, the steel structure is assembled into modular steel structure framework on the ground by using ground assembling unit, the position precision of steel structure framework and oblique support connecting point is ensured, the number of hoisting units is also reduced, the air assembling connection is simple, the array plane is convenient to adjust, the precision of each modular hoisting unit can also be ensured, the precision of key parts after assembling can reach millimeter level, and the steel structure framework unit can expand the horizontal width according to the need, and by rigid, semi-rigid connection, the assembling angle, height and oblique support size are controlled in the adjustable range, the period and cost of on-site erection are also greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of radar antenna construction technology, specifically to a scalable large steel structure unit with precision control and its assembly method. Background Technology

[0002] Radar is a device used to radiate and receive electromagnetic waves and determine its detection direction. The radar antenna is the core component of the radar system, responsible for transmitting and receiving electromagnetic wave signals. The detection range of the radar antenna is affected by the curvature of the earth. Raising the antenna can significantly increase the line of sight. The supporting structure unit of the radar antenna is different from the steel structure of ordinary buildings, requiring high installation accuracy and sufficient support strength.

[0003] Traditional large steel structures are generally assembled on-site using individual components to form a steel frame. However, the assembled steel frame often has large precision errors, which cannot meet the assembly requirements of high-precision radar systems. The subsequent array adjustment is difficult and time-consuming, and rework may occur, which greatly increases the on-site erection cycle and cost. To address this, a precision-controlled scalable large steel structure unit and assembly method are proposed. Summary of the Invention

[0004] To address the technical problems existing in the prior art, the present invention provides a scalable large steel structure unit with precision control and an assembly method thereof.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a precision-controlled scalable large steel structure unit, comprising a steel structure frame for installing and supporting radar antennas, an oblique support unit for supporting the steel structure frame, and a ground assembly unit for supporting the splicing of the steel structure frame;

[0006] The steel structure frame includes a steel structure base, trusses, transverse connecting rods, antenna mounting panels, and diagonal support connection nodes. At least two parallel trusses are fixed to the steel structure base in sequence. Several transverse connecting rods are equidistantly semi-rigidly connected between adjacent trusses by detachable fasteners. Several antenna mounting panels are equidistantly arranged on the top surface of each truss. Several diagonal support connection nodes are equidistantly arranged on the bottom surface of each truss at the end away from the steel structure base.

[0007] Preferably, the inclined support unit includes an inclined support frame, an inclined support base, and a skeleton connection node. Several transverse connecting rods are equidistantly semi-rigidly connected between two adjacent inclined support frames by detachable fasteners. The inclined support base is fixed to the bottom surface of the inclined support frame. Each skeleton connection node is located on the top of the inclined support frame, and each skeleton connection node is rigidly fixed to the inclined support connection node by detachable fasteners.

[0008] Preferably, the ground assembly unit includes an angle control fixture, a steel structure mounting panel, an angle adjustment rod, a fixed base plate, an inclined support fixture, inclined support connecting beams, a spacer hole, and a tripod. The angle adjustment rod is rotatably connected to the top and bottom surfaces of the angle control fixture, the fixed base plate is rotatably connected to the bottom of the angle adjustment rod, the steel structure mounting panel is set on top of the angle control fixture, the inclined support fixture is placed flat on the side of the angle control fixture, a plurality of tripods are equidistantly arranged between the angle control fixture and the inclined support fixture, and a plurality of inclined support connecting beams are equidistantly arranged on the top surface of the inclined support fixture.

[0009] Preferably, the fastener includes a central web and two side flanges, and the central web and the two side flanges are fixedly connected to the truss, diagonal support frame, skeleton connection node or diagonal support connection node by friction type high-strength bolts.

[0010] Preferably, the upper part of the inclined support frame is detachably and fixedly connected to a support rod, and the bottom surface of the support rod is flush with the bottom surface of the inclined support base.

[0011] Preferably, the angle control fixture has fixed-distance holes at both the front and rear ends of its bottom and the front and rear ends of the inclined support fixture.

[0012] Preferably, a method for assembling a scalable large steel structure includes the following steps:

[0013] S1. Prepare and position the ground assembly unit according to the radar antenna interface requirements;

[0014] S2, according to the ground assembly units, the steel structure frame is assembled and fixed on the ground;

[0015] S3, after the assembled steel structure frame is lifted, it is aligned with the diagonal support unit, assembled and fixed.

[0016] Preferably, step S1 specifically includes the following:

[0017] S11. According to the radar antenna interface requirements, adjust the angle between the angle adjustment rod and the angle control fixture. After adjusting to the required angle, fix the base plate and the angle control fixture on the plane.

[0018] S12, determine the distance between the angle control fixture and the angle control fixture by using the distance holes on the angle control fixture and the angle support fixture. After determining the distance, place the angle support fixture in the corresponding position and fix the angle support fixture.

[0019] S13, place several tripods at equal intervals between the angle control fixture and the oblique support fixture, and then place a tripod on the side of the oblique support fixture away from the angle control fixture, so as to support the steel structure unit during the assembly process.

[0020] Preferably, step S2 specifically includes the following:

[0021] S21, the prefabricated steel structure base is fixed to the steel structure installation panel in a detachable manner. The bottom of the truss is supported by a tripod. Each component is installed in sequence as required. The diagonal support connection node is aligned with the diagonal support connection beam. Each component is connected in the middle by fasteners. A certain gap is maintained when connecting, and the bolts are tightened to a half-tight state.

[0022] S22, repeat S21, and then connect the remaining trusses to the steel structure mounting panel and the diagonal support fixture in sequence. When splicing, place several transverse connecting rods at equal intervals between the upper and lower ends of two adjacent trusses, and connect the transverse connecting rods to the trusses in a semi-rigid manner. Adjust the height of the antenna mounting surface by adjusting the gap between the components.

[0023] S23. After the adjustment is completed, tighten all the remaining bolts to complete the steel structure frame assembly. Then, follow steps S1-S2 to complete the assembly of the inclined support frame.

[0024] Preferably, step S3 specifically includes the following:

[0025] S31, lift the inclined support frame as a whole, fix the inclined support base in the reserved position on the platform, fix the top of the support rod to the ground above the inclined support frame with bolts, and the bottom of the support rod abuts against the platform. Use the support rod to support the inclined support frame at a fixed angle.

[0026] S32, tighten the fastening bolts of the steel structure installation panel and the steel structure base, and the inclined support connecting beam and the inclined support connecting node, so that the steel structure frame is released from the ground assembly unit. After the steel structure frame is lifted, it is placed in the reserved position on the platform, and the steel structure base is fixed to the platform. The inclined support connecting node and the frame connecting node are aligned one by one. Then, the inclined support connecting node and the frame connecting node are rigidly fixed and connected by fasteners. After the connection is completed, tighten all bolts.

[0027] S33. The radar antenna is fixed to the antenna mounting panel by friction-type high-strength bolts. After the installation is completed, the tightness of the friction-type high-strength bolts should be checked regularly. If any looseness is found, they should be replaced immediately.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. The present invention uses ground assembly units to assemble the steel structure into a modular steel structure framework on the ground for assembly, ensuring the position accuracy of the connection points between the steel structure framework and the diagonal supports, reducing the number of hoisting units, simplifying the aerial assembly connection, facilitating the adjustment of the array surface, and at the same time ensuring the accuracy of each modular hoisting unit. The accuracy of key parts after assembly can reach the millimeter level, and the steel structure framework can be extended horizontally as needed. Meanwhile, through rigid and semi-rigid connections, the assembly angle, height, and diagonal support size are controlled within an adjustable range, greatly reducing the on-site erection cycle and cost.

[0030] 2. Through the design of the "inverted V" type mutual support structure, a triangular support space is formed at the bottom, which can better ensure the lateral support strength, provide stronger support for the radar antenna, and reduce the longitudinal windward area, thereby improving the overall stability of the steel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall steel structure framework of the present invention;

[0032] Figure 2 is a schematic diagram of the overall structure during the ground assembly of the steel structure framework of the present invention;

[0033] Figure 3 is a schematic diagram of the overall ground assembly tooling of the present invention;

[0034] Figure 4 is a schematic diagram of the structure of the diagonal support tooling of the present invention;

[0035] Figure 5 is a schematic diagram of the structure after the steel structure framework of the present invention is assembled;

[0036] Figure 6 of the present invention Figure 1 is an enlarged schematic diagram of the structure at location A in

[0037] The numbers in the figure represent:

[0038] 1. Truss; 2. Steel structure base; 3. Horizontal connecting rod; 4. Antenna mounting panel; 5. Diagonal support connection node; 6. Fastener; 7. Diagonal support frame; 8. Diagonal support base; 9. Skeleton connection node; 10. Support rod; 11. Angle control tooling; 12. Steel structure mounting panel; 13. Angle adjustment rod; 14. Fixed bottom plate; 15. Spacing hole; 16. Diagonal support tooling; 17. Diagonal support connection beam; 18. Tripod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments, which illustrate the above and other technical features and advantages of the present invention. However, the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.

[0040] Example:

[0041] like Figure 1-6 As shown, the present invention provides a scalable large steel structure unit with precision control, including a steel structure frame for installing and supporting a radar antenna, an oblique support unit for supporting the steel structure frame, and a ground assembly unit for supporting the splicing of the steel structure frame.

[0042] The steel structure frame includes a steel structure base 2, trusses 1, transverse connecting rods 3, antenna mounting panels 4, and diagonal support connection nodes 5. At least two parallel trusses 1 are fixed to the steel structure base 2 in sequence. Several transverse connecting rods 3 are equidistantly semi-rigidly connected between adjacent trusses 1 by detachable fasteners 6. Several antenna mounting panels 4 are equidistantly arranged on the top surface of each truss 1. Several diagonal support connection nodes 5 are equidistantly arranged on the bottom surface of the end of each truss 1 away from the steel structure base 2.

[0043] In this embodiment, the inclined support unit includes an inclined support frame 7, an inclined support base 8, and a skeleton connection node 9. The number and spacing of the inclined support frames 7 are the same as those of the truss 1. Two adjacent inclined support frames 7 are parallel to each other. The inclined support frames 7 and the truss 1 have similar structures. Several transverse connecting rods 3 are equidistantly semi-rigidly connected between two adjacent inclined support frames 7 by detachable fasteners 6. The inclined support base 8 is fixed on the bottom surface of the inclined support frame 7. Each skeleton connection node 9 is set on the top of the inclined support frame 7. Each skeleton connection node 9 is rigidly fixedly connected to the inclined support connection node 5 by detachable fasteners 6.

[0044] In this embodiment, the ground assembly unit includes an angle control fixture 11, a steel structure mounting panel 12, an angle adjustment rod 13, a fixed base plate 14, an inclined support fixture 16, an inclined support connecting beam 17, and a tripod 18. The angle adjustment rod 13 is rotatably connected to the top and bottom surfaces of the angle control fixture 11. The erection angle of the angle control fixture 11 is determined based on the connection position between the inclined support frame 7 and the inclined support unit before erection. The fixed base plate 14 is rotatably connected to the bottom of the angle adjustment rod 13. The steel structure mounting panel 12 is set on the top of the angle control fixture 11. The inclined support fixture 16 is placed flat on the side of the angle control fixture 11. Several tripods 18 are equidistantly arranged between the angle control fixture 11 and the inclined support fixture 16. Several inclined support connecting beams 17 are equidistantly arranged on the top surface of the inclined support fixture 16.

[0045] In this embodiment, fastener 6 includes a central web plate and two side flanges, such as... Figure 6As shown, the middle web plate and the two side flanges are all fixedly connected to the truss 1, the diagonal support frame 7, the skeleton connection node 9 or the diagonal support connection node 5 by friction type high-strength bolts. When rigidly connected, the middle web plate and the two side flanges are fixedly connected. When semi-rigidly connected, they are only connected through the middle web plate.

[0046] In this embodiment, a support rod 10 is detachably and fixedly connected to the ground on the upper part of the inclined support frame 7. The bottom surface of the support rod 10 is flush with the bottom surface of the inclined support base 8. During assembly, the inclined support frame 7 is first supported to the required angle and fixed by the support rod 10. After the steel structure frame and the inclined support frame 7 are assembled and fixed, the support rod 10 is removed from the bottom of the inclined support frame 7.

[0047] In this embodiment, the front and rear ends of the bottom of the angle control fixture 11 and the front and rear ends of the inclined support fixture 16 are provided with distance-fixing holes 15. When placing the angle control fixture 11 and the inclined support fixture 16, the distance and position between them can be accurately controlled and determined through the distance-fixing holes 15.

[0048] In this embodiment, a method for assembling a scalable large steel structure is provided, which includes the following steps:

[0049] S1. Prepare and position the ground assembly unit according to the radar antenna interface requirements;

[0050] S2, according to the ground assembly units, the steel structure frame is assembled and fixed on the ground;

[0051] S3, after the assembled steel structure frame is lifted, it is aligned with the diagonal support unit, assembled and fixed.

[0052] In this embodiment, step S1 specifically includes the following:

[0053] S11. According to the radar antenna interface requirements, adjust the angle between the angle adjustment rod 13 and the angle control fixture 11. After adjusting to the required angle, fix the base plate 14 and the angle control fixture 11 on the plane.

[0054] S12, the distance between the angle control fixture 16 and the angle control fixture 11 is determined by the distance hole 15 on the angle control fixture 11 and the angle support fixture 16. After the distance is determined, the angle support fixture 16 is placed in the corresponding position and fixed.

[0055] S13, several tripods 18 are placed at equal intervals between the angle control fixture 11 and the inclined support fixture 16, and a tripod 18 is placed on the side of the inclined support fixture 16 away from the angle control fixture 11, so as to support the steel structure frame during the assembly process.

[0056] In this embodiment, step S2 specifically includes the following:

[0057] S21, the prefabricated steel structure base 2 is fixed to the steel structure installation panel 12 in a detachable manner. The bottom of the truss 1 is supported by the tripod 18. Each component is installed in sequence as required. The diagonal support connection node 5 is aligned with the diagonal support connection beam 17. Each component is connected in the middle by fasteners 6. A certain gap is maintained when connecting, and the bolts are tightened to a half-tight state.

[0058] S22, repeat S21, and then connect the remaining trusses 1 to the steel structure mounting panel 12 and the diagonal support fixture 16 in sequence. When splicing, place several transverse connecting rods 3 at equal intervals between the upper and lower ends of two adjacent trusses 1, and semi-rigidly connect the transverse connecting rods 3 to the trusses 1. Adjust the height of the antenna mounting surface through the gap between the mounting hole and the bolt. The interface positioning is done through the positioning fixture. Millimeter-level fine adjustment can be made during installation.

[0059] S23. After the adjustment is completed, tighten all the remaining bolts to complete the steel structure frame assembly. Then, follow steps S1-S2 to complete the assembly of the inclined support frame 7.

[0060] In this embodiment, step S3 specifically includes the following:

[0061] S31, the inclined support frame 7 is lifted as a whole, the inclined support base 8 is fixed in the reserved position on the platform, the top of the support rod 10 is fixed to the ground above the inclined support frame 7 with bolts, the bottom of the support rod 10 abuts against the platform, and the inclined support frame 7 is supported and fixed at an angle by the support rod 10 to prevent structural deformation;

[0062] S32, tighten the fastening bolts of the steel structure installation panel 12 and the steel structure base 2, and the inclined support connecting beam 17 and the inclined support connecting node 5, so that the steel structure frame is released from the ground assembly unit. After the steel structure frame is lifted, it is placed in the reserved position on the platform, and the steel structure base 2 is fixed to the platform. The inclined support connecting node 5 and the frame connecting node 9 are aligned one by one. Then, the inclined support connecting node 5 and the frame connecting node 9 are rigidly fixedly connected by fasteners 6. After the connection is completed, tighten all bolts.

[0063] S33. The radar antenna is fixed to the antenna mounting panel 4 by friction-type high-strength bolts. After the installation is completed, the tightness of the friction-type high-strength bolts is checked regularly. If any loosening is found, they are replaced immediately.

[0064] The above are merely preferred embodiments of the present invention and are illustrative in nature, not 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 scalable large steel structure unit with precision control, characterized in that, It includes a steel frame for installing and supporting radar antennas, diagonal support units for supporting the steel frame, and ground assembly units for supporting the splicing of the steel frame. The steel structure frame includes a steel structure base, trusses, transverse connecting rods, antenna mounting panels, and diagonal support connection nodes. At least two parallel trusses are fixed to the steel structure base in sequence. Several transverse connecting rods are equidistantly semi-rigidly connected between adjacent trusses by detachable fasteners. Several antenna mounting panels are equidistantly arranged on the top surface of each truss. Several diagonal support connection nodes are equidistantly arranged on the bottom surface of each truss at the end away from the steel structure base. The inclined support unit includes an inclined support frame, an inclined support base, and a skeleton connection node. Several of the transverse connecting rods are equidistantly semi-rigidly connected between two adjacent inclined support frames by detachable fasteners. The inclined support base is fixed to the bottom surface of the inclined support frame. Each skeleton connection node is located on the top of the inclined support frame, and each skeleton connection node is rigidly fixed to the inclined support connection node by detachable fasteners. The ground assembly unit includes an angle control fixture, a steel structure mounting panel, an angle adjustment rod, a fixed base plate, an inclined support fixture, inclined support connecting beams, and tripods. The angle adjustment rod is rotatably connected to the top and bottom surface of the angle control fixture, and the fixed base plate is rotatably connected to the bottom of the angle adjustment rod. The steel structure mounting panel is set on top of the angle control fixture, and the inclined support fixture is placed flat on the side of the angle control fixture. Several tripods are equidistantly arranged between the angle control fixture and the inclined support fixture, and several inclined support connecting beams are equidistantly arranged on the top surface of the inclined support fixture.

2. The scalable large steel structure unit with precision control as described in claim 1, characterized in that, The fasteners include a central web plate and two side flanges, both of which are fixedly connected to the truss, diagonal support frame, skeleton connection node, or diagonal support connection node by friction-type high-strength bolts.

3. The scalable large steel structure unit with precision control as described in claim 2, characterized in that, The inclined support frame is detachably and fixedly connected to the ground on its upper part with a support rod, the bottom surface of which is flush with the bottom surface of the inclined support base.

4. The scalable large steel structure unit with precision control as described in claim 3, characterized in that, The angle control fixture has fixed-distance holes at both the front and rear ends of its bottom and the front and rear ends of its inclined support fixture.

5. A method for assembling a scalable large steel structure using a precision-controlled scalable large steel structure unit as described in claim 4, characterized in that, The assembly method includes the following steps: S1. Prepare and position the ground assembly unit according to the radar antenna interface requirements; S2, according to the ground assembly units, the steel structure frame is assembled and fixed on the ground; S3, after the assembled steel structure frame is lifted, it is aligned with the diagonal support unit, assembled and fixed.

6. The method for assembling a scalable large steel structure as described in claim 5, characterized in that, Step S1 specifically includes the following steps: S11, according to the radar antenna interface requirements, adjust the angle between the angle adjustment rod and the angle control fixture, and after adjusting to the required angle, fix it on the plane through the fixed base plate; S12, determine the distance between the angle control fixture and the angle control fixture by using the distance holes on the angle control fixture and the angle support fixture. After determining the distance, place the angle support fixture in the corresponding position and fix the angle support fixture. S13, place several tripods at equal intervals between the angle control fixture and the oblique support fixture, and then place a tripod on the side of the oblique support fixture away from the angle control fixture, so as to support the steel structure frame during the assembly process.

7. The method for assembling a scalable large steel structure as described in claim 5, characterized in that, Step S2 specifically includes the following steps: S21, the prefabricated steel structure base is fixed to the steel structure installation panel in a detachable manner. The bottom of the truss is supported by a tripod. Each component is installed in sequence as required. The diagonal support connection node is aligned with the diagonal support connection beam. Each component is connected in the middle by fasteners. A certain gap is maintained when connecting, and the bolts are tightened to a half-tight state. S22, repeat S21, and then connect the remaining trusses to the steel structure mounting panel and the diagonal support fixture in sequence. When splicing, place several transverse connecting rods at equal intervals between the upper and lower ends of two adjacent trusses, and connect the transverse connecting rods to the trusses in a semi-rigid manner. Adjust the height of the antenna mounting surface by adjusting the gap between the components. S23. After adjustment, tighten all remaining bolts to complete the steel structure frame assembly. Then, follow steps S1-S2 to complete the assembly of the inclined support frame.

8. The method for assembling a scalable large steel structure as described in claim 5, characterized in that, Step S3 specifically includes the following steps: S31, lift the inclined support frame as a whole, fix the inclined support base in the reserved position on the platform, fix the top of the support rod to the ground above the inclined support frame with bolts, and the bottom of the support rod abuts against the platform. Use the support rod to support the inclined support frame at a fixed angle. S32, tighten the fastening bolts of the steel structure installation panel and the steel structure base, and the inclined support connecting beam and the inclined support connecting node, so that the steel structure frame is released from the ground assembly unit. After the steel structure frame is lifted, it is placed in the reserved position on the platform, and the steel structure base is fixed to the platform. The inclined support connecting node and the frame connecting node are aligned one by one. Then, the inclined support connecting node and the frame connecting node are rigidly fixed and connected by fasteners. After the connection is completed, tighten all bolts. S33. The radar antenna is fixed to the antenna mounting panel by friction-type high-strength bolts. After the installation is completed, the tightness of the friction-type high-strength bolts should be checked regularly. If any loosening is found, they should be replaced immediately.

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