SAR radar antenna subarray assembling tool

Abstract

The utility model provides an SAR radar antenna subarray assembling tool. The SAR radar antenna subarray assembling tool comprises a tool bottom frame assembly, an angle adjusting assembly, a turnover frame assembly, a supporting pull rod assembly and an antenna subarray. The assembling tool has the advantages that the assembling tool enables the two sides of a base body structure of the SAR radar antenna to have enough operation space so that all assemblies can be conveniently installed; in addition, according to the actual situation, the two horizontal parking fixed connection requirements of the base body structure in the + Z direction and the-Z direction can be met; the assembling tool can meet the requirement for transferring in an assembling plant under the working condition of the SAR radar antenna subarray.

Description

Technical Field

[0001] The utility model belongs to the field of spaceborne SAR radar antennas, in particular to an assembly tool for SAR radar antenna subarrays. Background Art

[0002] The spaceborne SAR radar antenna is a radar system carried on a small satellite platform. Due to the limited space size of the rocket fairing, the SAR radar antenna is generally composed of multiple sub-arrays. When the satellite is launched, the multiple sub-arrays are folded on the satellite platform. When in orbit, each antenna sub-array is deployed under the drive of the deployment mechanism to form a complete coplanar surface.

[0003] A SAR radar antenna primarily consists of a base structure, electrical components, cable assemblies, and thermal control components. The electrical components primarily include a microstrip antenna, TR assembly, control components, power divider, and power supply. The microstrip antenna is typically mounted on the ground-facing side (+Z side) of the base structure, while all other components are mounted on the other side (-Z side).

[0004] At present, the assembly of SAR radar antenna subarrays has the following problems: since each component of the SAR radar antenna has relatively high installation precision requirements, and the entire antenna assembly process lasts for a long time, both sides of the base structure must be operated and installed during the assembly process; in addition, the cost of SAR radar antennas is high, the component production cycle is long, and the protective work is not in place, which makes it easy to bump into and cause damage. Utility Model Content

[0005] In view of this, the present invention aims to provide a SAR radar antenna subarray assembly tool to solve at least one problem existing in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0007] A SAR radar antenna subarray assembly tool comprises a tool chassis assembly, an angle adjustment assembly, a flip frame assembly, a support rod assembly and an antenna subarray. The top of the tool chassis assembly is connected to the flip frame assembly via the angle adjustment assembly, and two support rod assemblies are further installed on one side of the flip frame assembly. Both support rod assemblies are installed on one side of the tool chassis assembly, and the antenna subarray is installed on the top of the flip frame assembly.

[0008] Furthermore, the tooling chassis assembly includes a chassis, two handle racks, two mounting platforms, four casters with brakes and two support rod connecting ears. A caster with brakes is installed at each of the four corners of the bottom of the chassis, a handle rack is installed on each side of the chassis, a mounting platform is installed on each side of the top of the chassis, and two support rod connecting ears are symmetrically installed on the surface of the chassis.

[0009] Furthermore, the angle adjustment assembly includes a reducer mounting seat, a worm gear reducer, a first reducer connecting ring, two angle adjustment connecting blocks, a second reducer connecting ring, a slewing bearing and a slewing bearing mounting seat. The reducer mounting seat and the slewing bearing mounting seat are respectively installed on the left and right sides of the base frame. The worm gear reducer is installed on the reducer mounting seat. The first reducer connecting ring and an angle adjustment connecting block are respectively installed on the worm gear reducer in sequence. The slewing bearing mounting seat is respectively installed with a slewing bearing, a second reducer connecting ring and another angle adjustment connecting block. The two angle adjustment connecting blocks are used to connect the flip frame assembly.

[0010] Furthermore, the flip frame assembly includes an antenna protection frame, four antenna connection block assemblies, four hanging point adapter blocks and four hanging ring bodies. Four antenna connection block assemblies are installed on the top of the antenna protection frame. Each of the antenna connection block assemblies is also connected to the antenna subarray respectively. The four hanging ring bodies are symmetrically arranged in pairs on the front and rear sides of the antenna protection frame, and each hanging ring body is installed to the front and rear sides of the antenna protection frame through a hanging point adapter block.

[0011] Furthermore, the surface of the antenna protection frame is provided with several threaded holes connected to the antenna connection block assembly and connection block through holes connected to the angle adjustment connection block, and the surface of the antenna protection frame is welded with several ear bodies connected to the support pull rod assembly.

[0012] Furthermore, the antenna connection block assembly includes an antenna connection block body, a joint bearing and a bearing pressure plate. The outer ring of the joint bearing is installed inside the antenna connection block body through the bearing pressure plate. The surface of the antenna connection block body is provided with sub-array through holes connected to the antenna sub-array and protective frame through holes connected to the antenna protective frame. The surface of the antenna connection block body is provided with an installation groove for installing the joint bearing.

[0013] Furthermore, the lifting point adapter block includes a lifting ring mounting screw hole column and two groups of mounting flanges symmetrically arranged up and down, the lifting ring mounting screw hole column is installed to one side of one group of mounting flanges, and the two groups of mounting flanges are symmetrically installed to the antenna protection frame.

[0014] Furthermore, the supporting rod assembly includes two sets of rod connectors, two sets of rod bodies, two sets of double-headed screw connectors and double-headed screws. The two ends of the double-headed screws are respectively connected to one end of the two sets of rod bodies through two sets of double-headed screw connectors, and the other ends of the two sets of rod bodies are respectively installed with a set of rod connectors, and the two sets of rod connectors are respectively installed to the base frame and the antenna protection frame.

[0015] Furthermore, the antenna subarray includes an antenna base, a reinforced aluminum frame and an aluminum skin. The antenna base is covered with aluminum skin on both sides. The interior of the antenna base is filled with a honeycomb core and inlaid with a reinforced aluminum frame. The surface of the reinforced aluminum frame is provided with an external interface.

[0016] Compared with the prior art, the SAR radar antenna subarray assembly tool described in the present invention has the following advantages:

[0017] (1) The utility model discloses a SAR radar antenna subarray assembly tool. The assembly tool provides sufficient operating space on both sides of the base structure of the SAR radar antenna to facilitate the installation of various components. The assembly tool can also meet the two horizontal parking and fixed connection requirements of the base structure, namely, +Z upward and -Z upward, according to actual conditions. The assembly tool can meet the transportation requirements within the assembly plant under the working conditions of the SAR radar antenna subarray.

[0018] (2) The utility model discloses a SAR radar antenna subarray assembly tool. This assembly tool can provide good protection for the SAR radar antenna subarray during the entire assembly, testing, and shipping and hoisting process. The assembly tool has good rigidity and strength and is easy to operate and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of a tooling chassis assembly according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the angle adjustment assembly according to an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the flip frame assembly according to an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the antenna connection block assembly according to an embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the lifting point adapter block according to an embodiment of the present utility model;

[0026] Figure 7 This is a schematic diagram of the support rod assembly according to an embodiment of the present utility model;

[0027] Figure 8 This is a schematic diagram of the antenna subarray according to an embodiment of the present utility model;

[0028] Figure 9A schematic diagram of the angle adjustment process of the assembly tooling system according to an embodiment of the present invention;

[0029] Figure 10 This is a second schematic diagram of the angle adjustment process of the assembly tooling system according to an embodiment of the present utility model;

[0030] Figure 11 This is a schematic diagram of the hoisting process of the antenna sub-array 5 after assembly according to an embodiment of the present utility model;

[0031] Figure 12 This is a second schematic diagram of the hoisting process after the antenna sub-array 5 according to an embodiment of the present invention is completed.

[0032] Description of reference numerals:

[0033] 1. Tooling chassis assembly; 11. Chassis; 12. Handle frame; 13. Mounting platform; 14. Casters with brakes; 15. Support rod connecting lugs; 2. Angle adjustment assembly; 21. Reducer mounting base; 22. Worm gear reducer; 23. First reducer connecting ring; 24. Angle adjustment connecting block; 25. Second reducer connecting ring; 26. Slewing bearing; 27. Slewing bearing mounting base; 3. Flip frame assembly; 31. Antenna protection frame; 311. Threaded hole; 312. Lug body; 313. Connecting block through hole; 32 , antenna connection block assembly; 321, antenna connection block body; 3211, subarray through hole; 3212, protection frame through hole; 3213, mounting slot; 322, joint bearing; 323, bearing pressure plate; 33, hanging point adapter block; 331, mounting flange; 332, lifting ring mounting screw hole column; 34, lifting ring body; 4, support rod assembly; 41, rod connector; 42, rod body; 43, double-headed screw connector; 44, double-headed screw; 5, antenna subarray; 51, reinforced aluminum frame; 52, aluminum skin; 53, external interface. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0038] like Figure 1 As shown, a SAR radar antenna subarray assembly tool mainly includes a tool base component 1, an angle adjustment component 2, a flip frame component 3, a support rod component 4 and an antenna subarray 5.

[0039] like Figure 2 The figure shows the tooling chassis assembly 1: it consists of a chassis 11, two handle frames 12, two mounting platforms 13, four casters with brakes 14, and two support rod connecting lugs 15. The chassis 11 is welded from Q235 steel tube and plate with a cross-section of 40×40×3mm, providing high rigidity and strength. The casters with brakes 14 are mounted to the chassis 11 with screws, while the remaining components are mounted to the chassis 11 by welding. The mounting platforms 13 have through-holes for connecting to the angle adjustment assembly 2.

[0040] Figure 3The angle adjustment assembly 2 shown here mainly comprises a reducer mounting base 21, a worm gear reducer 22, a first reducer connecting ring 23, two angle adjustment connecting blocks 24, a second reducer connecting ring 25, a slewing bearing 26, and a slewing bearing mounting base 27. The reducer mounting base 21 and the slewing bearing mounting base 27 are both screwed to the base frame 11. The worm gear reducer 22, serving as the active transmission end, is screwed to the reducer mounting base 21 and has the ability to self-lock at any position. It is directly driven by a handwheel, driving the tilt frame assembly 3 to rotate about its axis. The slewing bearing 26, serving as the driven end, supports the entire tilt frame assembly 3. Two angle adjustment connecting blocks 24, one mounted at the active end and the other at the driven end, provide interfaces for connecting to the tilt frame assembly 3.

[0041] Figure 4 This is a diagram illustrating the flip frame assembly 3, which primarily comprises an antenna protection frame 31, four antenna connection block assemblies 32, four suspension point adapter blocks 33, and four suspension ring bodies 34. The antenna protection frame 31 is welded from Q235 steel tubular plate with a cross-section of 40×40×3mm, offering high rigidity and strength. It features threaded holes 311 for connecting to the antenna connection block assemblies 32, through-holes 313 for connecting to the angle adjustment connection block 24, and welded tab bodies 312 for connecting to the support rod assembly 4. The position of the suspension point adapter blocks 33 on the antenna protection frame 31 can be adjusted as needed. The antenna connection block assemblies 32 are connected to the antenna protection frame 31 at one end and to the antenna subarray 5 at the other.

[0042] Figure 5 This is the antenna connection block assembly 32. It primarily comprises the antenna connection block body 321, a joint bearing 322, and a bearing pressure plate 323. The antenna connection block body 321 has the following features: a subarray through-hole 3211 for connecting the antenna subarray 5, a protective frame through-hole 3212 for connecting to the antenna protective frame 31, and a mounting slot 3213 for mounting the joint bearing 322. The outer ring of the joint bearing 322 is mounted inside the antenna connection block body 321 via the bearing pressure plate 323, while the inner ring serves as an adjustment interface for external testing. The four antenna connection block assemblies 32 not only connect the antenna subarrays 5 to the antenna protective frame 31, but also enable multi-degree-of-freedom adjustments during the multi-subarray splicing and testing phase through the reserved interfaces of the joint bearings 322.

[0043] Figure 6 It is a suspension point adapter block 33, which consists of two parts. It is installed to the antenna protection frame 31 using screws through two sets of mounting flanges 331. After adjusting to the position, the screws are tightened and squeezed to position them. At the same time, the suspension point adapter block 33 has a screw hole column 332 for mounting a lifting ring on the outside.

[0044] Figure 7The support rod assembly 4 is primarily composed of two sets of rod connectors 41, two sets of rod bodies 42, two sets of double-ended screw connectors 43, and double-ended screws 44. The rod connectors 41 at both ends of the support rod assembly 4 connect to the antenna protection frame 31 and the base frame 11, providing stable support. The connectors 41, rod bodies 42, and double-ended screw connectors 43 are all fixedly connected, while the double-ended screws 44 are threadedly connected to the two double-ended screw connectors 43. Changing the threaded length of the double-ended screws 44 can adjust the length of the support rod assembly 4.

[0045] Figure 8 The antenna subarray 5 has an aluminum honeycomb panel structure with aluminum skins 52 on both sides and a honeycomb core filled inside. A reinforced aluminum frame 51 is embedded to enhance the overall rigidity. An external interface 53 is left on the reinforced aluminum frame 51 for support or hoisting.

[0046] Figure 9-10 Illustration of the angle adjustment process for the SAR radar antenna subarray assembly fixture system. After the equipment on one side of the antenna subarray 5 is installed, the equipment on the other side needs to be installed, adjusting the other side to face upward. Turning the handwheel on the worm gear reducer 22 rotates the flip frame assembly 3 accordingly. When it rotates 180 degrees, adjust the position. Then, install the two sets of support rod assemblies 4 onto the antenna protection frame 31 and the base frame 11 for support. Then, install other equipment on the upward-facing surface.

[0047] Figure 11-12 After the antenna subarray 5 is assembled, the flip frame assembly 3 is hoisted together with the antenna subarray 5. Both horizontal and vertical hoisting are possible using the reserved hoisting point adapter blocks 33 and hoist ring bodies 34. Throughout the hoisting and transport process, the flip frame assembly 3 protects the antenna subarray 5 from damage such as collisions.

[0048] This assembly tooling ensures that both sides of the base structure of the SAR radar antenna have sufficient operating space to facilitate the installation of various components; and can meet the two horizontal parking and fixed connection requirements of the base structure (+Z upward and -Z upward) according to actual conditions; the assembly tooling can meet the transportation requirements within the assembly plant under the working conditions of SAR radar antenna subarrays.

[0049] This assembly tool can provide good protection for the SAR radar antenna subarray during the entire assembly, testing, shipping and hoisting process; the assembly tool has good rigidity and strength and is easy to operate and maintain.

[0050] Working principle of a SAR radar antenna subarray assembly tool:

[0051] The first step is to install the antenna subarray 5 base structure on the flip frame assembly 3 through the external interface 53 and the antenna connection block assembly 32; the second step is to rotate the handwheel on the worm gear reducer 22, and the flip frame assembly 3 rotates accordingly, and adjust it to the base structure +Z facing upward, and then install the two sets of support rod assemblies 4 to the antenna protection frame 31 and the base frame 11 for support; the third step is to install the microstrip antenna on the base structure to complete the installation tooling of this surface; the fourth step is to rotate the handwheel on the worm gear reducer 22, and the flip frame assembly 3 rotates accordingly, and adjust it 180 degrees to When the base structure -Z is facing upward, the two sets of support rod assemblies 4 are installed on the antenna protection frame 31 and the base frame 11 for support; in the fifth step, the TR assembly, control assembly, power divider, power supply assembly, cable and thermal control assembly are installed on the base structure in sequence to complete the assembly of the entire antenna subarray 5; in the sixth step, if the antenna subarray 5 is hoisted and transported, the flip frame assembly 3 is separated from the angle adjustment connection block 24, and the flip frame assembly 3 and the antenna subarray 5 can be hoisted horizontally and vertically together through the reserved hoisting point adapter block 33 and the hoisting ring body 34.

[0052] This tooling ensures that both sides of the base structure of the SAR radar antenna have sufficient operating space to facilitate the installation of various components; and according to actual conditions, it can meet the base structure's +Z upward and -Z upward horizontal parking and fixed connection requirements; the assembly tooling can meet the transportation requirements within the assembly plant under the working conditions of SAR radar antenna subarrays; the assembly tooling can provide good protection for the SAR radar antenna subarrays during the entire assembly, testing, shipping and hoisting process; the assembly tooling has good rigidity and strength, and is easy to operate and maintain.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A SAR radar antenna subarray assembly tool, characterized by: The utility model comprises a tooling base frame assembly (1), an angle adjustment assembly (2), a flip frame assembly (3), a support rod assembly (4) and an antenna subarray (5); the top of the tooling base frame assembly (1) is connected to the flip frame assembly (3) via the angle adjustment assembly (2); two support rod assemblies (4) are also installed on one side of the flip frame assembly (3); the two support rod assemblies (4) are both installed on one side of the tooling base frame assembly (1); and the antenna subarray (5) is installed on the top of the flip frame assembly (3).

2. The SAR radar antenna subarray assembly tool according to claim 1, characterized in that: The tooling chassis assembly (1) comprises a chassis (11), two handle frames (12), two mounting platforms (13), four casters with brakes (14) and two support rod connecting ear pieces (15), wherein a caster with brakes (14) is respectively installed at the four corners of the bottom of the chassis (11), a handle frame (12) is respectively installed on both sides of the chassis (11), a mounting platform (13) is respectively installed on both sides of the top of the chassis (11), and two support rod connecting ear pieces (15) are also symmetrically installed on the surface of the chassis (11).

3. The SAR radar antenna subarray assembly tool according to claim 2, characterized in that: The angle adjustment assembly (2) comprises a reducer mounting seat (21), a worm gear reducer (22), a first reducer connecting ring (23), two angle adjustment connecting blocks (24), a second reducer connecting ring (25), a slewing bearing (26) and a slewing bearing mounting seat (27); the reducer mounting seat (21) and the slewing bearing mounting seat (27) are respectively mounted on the left and right sides of the base frame (11); the worm gear reducer (22) is mounted on the reducer mounting seat (21); the first reducer connecting ring (23) and an angle adjustment connecting block (24) are respectively mounted on the worm gear reducer (22); the slewing bearing (26), the second reducer connecting ring (25) and another angle adjustment connecting block (24) are respectively mounted on the slewing bearing mounting seat (27); the two angle adjustment connecting blocks (24) are used to connect the flip frame assembly (3).

4. The SAR radar antenna subarray assembly tool according to claim 2, characterized in that: The flip frame assembly (3) comprises an antenna protection frame (31), four antenna connection block assemblies (32), four suspension point adapter blocks (33) and four suspension ring bodies (34); the four antenna connection block assemblies (32) are installed on the top of the antenna protection frame (31); each of the antenna connection block assemblies (32) is also connected to the antenna subarray (5) respectively; the four suspension ring bodies (34) are symmetrically arranged in pairs on the front and rear sides of the antenna protection frame (31); and each suspension ring body (34) is installed on the front and rear sides of the antenna protection frame (31) respectively through a suspension point adapter block (33).

5. The SAR radar antenna subarray assembly tool according to claim 4, characterized in that: The surface of the antenna protection frame (31) is provided with a plurality of threaded holes (311) connected to the antenna connection block assembly (32) and a connection block through hole (313) connected to the angle adjustment connection block (24), and the surface of the antenna protection frame (31) is welded with a plurality of ear plate bodies (312) connected to the support pull rod assembly (4).

6. The SAR radar antenna subarray assembly tool according to claim 4, characterized in that: The antenna connection block assembly (32) comprises an antenna connection block body (321), a joint bearing (322) and a bearing pressure plate (323); the outer ring of the joint bearing (322) is installed inside the antenna connection block body (321) through the bearing pressure plate (323); the surface of the antenna connection block body (321) is provided with a subarray through hole (3211) connected to the antenna subarray (5) and a protection frame through hole (3212) connected to the antenna protection frame (31); the surface of the antenna connection block body (321) is provided with a mounting groove (3213) for mounting the joint bearing (322).

7. The SAR radar antenna subarray assembly tool according to claim 4, characterized in that: The lifting point adapter block (33) comprises a lifting ring mounting screw hole column (332) and two groups of mounting flanges (331) symmetrically arranged up and down, the lifting ring mounting screw hole column (332) is installed to one side of one group of mounting flanges (331), and the two groups of mounting flanges (331) are symmetrically installed to the antenna protection frame (31).

8. The SAR radar antenna subarray assembly tool according to claim 4, characterized in that: The support rod assembly (4) comprises two groups of rod connectors (41), two groups of rod bodies (42), two groups of double-headed screw (44) connectors (43) and double-headed screws (44), the two ends of the double-headed screw (44) are respectively connected to one end of the two groups of rod bodies (42) through the two groups of double-headed screw (44) connectors (43), and the other ends of the two groups of rod bodies (42) are respectively installed with a group of rod connectors (41), and the two groups of rod connectors (41) are respectively installed to the base frame (11) and the antenna protection frame (31).

9. The SAR radar antenna subarray assembly tool according to claim 1, characterized in that: The antenna subarray (5) comprises an antenna substrate, a reinforced aluminum frame (51) and an aluminum skin (52); the two sides of the antenna substrate are provided with aluminum skins (52); the interior of the antenna substrate is filled with a honeycomb core and inlaid with a reinforced aluminum frame (51); and an external interface (53) is provided on the surface of the reinforced aluminum frame (51).

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