A kind of bonding clamping device for hemispherical wave-transparent radome assembly

Abstract

The application discloses a kind of for hemispherical wave-transparent radome assembly bonding clamping device, the device includes base, the middle part of base is provided with cover body positioning device;Cover body positioning device is used to accommodate radome cover body and is positioned, radome cover body is provided with radome aerogel, and the top of radome cover body is provided with radome connecting ring;The top of cover body positioning device is provided with connecting ring positioning device, and connecting ring positioning device is used to position radome connecting ring;Base, cover body positioning device and connecting ring positioning device are positioned by positioning pin;The top of base is provided with center support frame, the middle part of center support frame is provided with aerogel fixing assembly, and aerogel fixing assembly extends downwards and is attached to radome aerogel;Center support frame is also provided with a plurality of pressure rod assemblies.The bonding clamping device for hemispherical wave-transparent radome assembly of the application can realize the accurate assembly of hemispherical radome, and is safe and reliable.

Description

Technical Field

[0001] This invention relates to the technical field of processing and manufacturing transparent radomes, and specifically to an adhesive clamping device for assembling hemispherical transparent radomes. Background Technology

[0002] As a crucial component of spacecraft radar radomes, the radome must withstand the harsh aerodynamic forces and heat during spacecraft flight, protecting electronic components to ensure normal operation at high speeds. It also serves as a channel for transmitting and receiving electromagnetic signals, guaranteeing normal communication between the spacecraft and the ground. Therefore, the radome's optimal operating condition is a vital factor in ensuring the normal flight of the spacecraft.

[0003] A radome typically consists of a composite ceramic housing, a metal connecting ring, and aerogel components. The aerogel and ceramic housing are usually interference-fitted, secured by friction. The metal connecting ring and ceramic housing are usually clearance-fitted, with a clearance generally required to be 0.2-0.3 mm. This clearance is achieved by filling the gap with adhesive and quartz fiber cloth. The radome assembly requires high precision; coaxiality is generally required to be no greater than 0.1, and there are strict dimensional limitations on the end face of the housing and the stepped surface of the connecting ring. Therefore, simple assembly is unlikely to meet design requirements. Failure to achieve the required assembly precision will affect the normal docking of the radome with the module and the normal flight of the spacecraft, leading to incalculable risks.

[0004] Chinese patent "A Method for Assembling and Processing a Composite Ceramic Radome", publication number CN115070655A, publication date 2022.09.20, discloses a method for assembling and processing a composite ceramic radome. The bonding fixture includes a base, an L-shaped bracket, a top rod, and a pressure block. The base has an internal thread that connects to the external thread of a connecting ring. The L-shaped bracket is connected to the base by screws. The top rod connects to the internal thread hole on the crossbar of the L-shaped bracket via an external thread. The bottom end of the top rod passes through the internal thread hole on the crossbar of the L-shaped bracket and connects to a groove on the top of the pressure block. This patented device can achieve the bonding of the radome and the connecting ring, but it has the following problems:

[0005] 1) When pressure is applied to the cover, the force is concentrated at the top of the cover, and since the cover is a thin-walled component, it is easy to cause deformation or damage.

[0006] 2) When the cover is bonded to the connecting ring, the cover may move left and right relative to the connecting ring. Without a fixing device, the product is prone to exceeding the form and position tolerance.

[0007] 3) The bonding device cannot meet the requirements for assembling aerogel.

[0008] Therefore, there is an urgent need to propose an adhesive clamping device that can achieve precise assembly of hemispherical transparent antenna radomes in a safe, reliable, convenient and quick manner. Summary of the Invention

[0009] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide an adhesive clamping device for assembling a hemispherical transparent radome, which can achieve precise assembly of the hemispherical radome safely and reliably.

[0010] To achieve the above objectives, the present invention provides an adhesive clamping device for assembling a hemispherical transparent radome, comprising a base, wherein a radome positioning device is disposed in the middle of the base; the radome positioning device is used to accommodate and position the radome body, wherein radome aerogel is disposed inside the radome body, and an radome connecting ring is disposed above the radome body; a connecting ring positioning device is disposed above the radome positioning device, and the connecting ring positioning device is used to position the radome connecting ring; the base, the radome positioning device, and the connecting ring positioning device are positioned together by positioning pins.

[0011] A central support frame is provided above the base, and an aerogel fixing component is provided in the middle of the central support frame. The aerogel fixing component extends downward and abuts against the aerogel of the antenna radome. Several pressure rod assemblies are also provided on the central support frame, and the pressure rod assemblies extend downward and abut against the connecting ring positioning device.

[0012] In a preferred embodiment, the base is an I-beam structure consisting of a top plate, a bottom plate, and a connecting column. The top plate is connected to the top end of the connecting column, and the bottom plate is connected to the bottom end of the connecting column. The bottom plate has a plurality of U-shaped mounting holes for fixing to the mounting platform. A central through hole is provided in the middle of the bottom plate.

[0013] In a preferred embodiment, the radome positioning device includes a radome positioning device body, with an annular positioning plate at the top of the radome positioning device body; a groove matching the outer shape of the antenna radome is provided in the middle of the radome positioning device body; and a vent is provided at the bottom of the radome positioning device body.

[0014] In a preferred embodiment, the annular positioning plate of the cover positioning device is provided with a plurality of positioning pin holes for the positioning pins to pass through; the annular positioning plate is also provided with a plurality of lifting rings for hoisting.

[0015] In a preferred embodiment, the connecting ring positioning device includes a connecting ring positioning device body, and a positioning groove is provided on the inner side of the connecting ring positioning device body. The positioning groove is used to limit the top boss of the antenna radome connecting ring.

[0016] The connecting ring positioning device is provided with a number of positioning protrusions, and the bottom end face of the positioning protrusions is in contact with the top end face of the antenna radome.

[0017] In a preferred embodiment, the connecting ring positioning device is further provided with several arc-shaped plates arranged corresponding to the positioning boss, the arc-shaped plates and the positioning boss are connected to form a stepped groove; the arc-shaped plates are provided with several positioning holes for the positioning pin to pass through.

[0018] In a preferred embodiment, the connecting ring positioning device body is provided with a plurality of fixing pin holes, and the connecting ring positioning device is fixed to the antenna cover connecting ring by fixing pins installed in the fixing pin holes; the arc plate is also provided with a plurality of U-shaped through holes.

[0019] In a preferred embodiment, the central support frame includes a first support arch and a second support arch, the first support arch and the second support arch being arranged in a cross shape; the central support frame is fixedly connected to the base by fasteners.

[0020] In a preferred embodiment, the aerogel fixing assembly includes a screw, a rotating handle is provided at the top end of the screw, and a profile pressing block is provided at the bottom end of the screw. The outer profile of the profile pressing block matches the inner profile of the antenna radome aerogel.

[0021] In a preferred embodiment, the pressure bar assembly includes a pressure bar, a pressure bar handle is provided at the top of the pressure bar, a pressure head is provided at the bottom of the pressure bar, and the pressure bar is threadedly connected to the pressure head.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] Firstly, traditional radome bonding typically involves bonding and assembling each part sequentially, which is time-consuming. However, the bonding and clamping device for assembling hemispherical wave-transparent radomes of this invention can achieve integrated bonding and assembly of all parts, significantly improving radome production efficiency.

[0024] Secondly, traditional radome bonding involves manual alignment using dial indicators and simple tooling, resulting in poor assembly accuracy and difficulty in guaranteeing bonding quality. However, the bonding clamping device for assembling hemispherical wave-transparent radomes of this invention ensures that all parts are firmly fixed. The clever use of locating pins effectively guarantees the coaxiality of the product, while the use of locating bosses precisely controls the bonding gap and prevents assembly errors.

[0025] Thirdly, the bonding and clamping device for assembling hemispherical transparent radomes of the present invention uses a split-type combination. After each radome bonding and assembly is completed, the radome co-connecting ring positioning device and the radome positioning device can be taken out separately for curing. The bonding device can then be used to bond the next radome, saving on the cost of the bonding device. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of an adhesive clamping device for assembling a hemispherical wave-transparent antenna radome according to the present invention;

[0027] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the adhesive clamping device used for assembling a hemispherical transparent antenna radome.

[0028] Figure 3 A schematic diagram of the cover positioning device;

[0029] Figure 4 This is a schematic diagram of the connecting ring positioning device;

[0030] Figure 5 This is a schematic diagram of the aerogel fixation component;

[0031] In the diagram: 1-Base, 101-Top plate, 102-Bottom plate, 103-Connecting column, 104-U-shaped mounting hole, 105-Central through hole, 2-Cover positioning device, 201-Cover positioning device body, 202-Annular positioning plate, 203-Shaped groove, 204-Ventilation hole, 205-Positioning pin hole, 206-Lifting ring, 3-Connecting ring positioning device, 301-Connecting ring positioning device body, 302-Positioning groove, 303-Positioning boss, 304-Arc plate, 3 05-Stepped groove, 306-Positioning hole, 307-Fixing pin, 308-U-shaped through hole, 4-Positioning pin, 5-Central support frame, 501-First support arch, 502-Second support arch, 6-Aerogel fixing assembly, 601-Screw, 602-Rotating handle, 603-Shaped pressure block, 7-Pressure rod assembly, 701-Pressure rod, 702-Pressure rod handle, 703-Pressure head, 8-Fixing pin, 9-Radiator cover, 10-Radiator aerogel, 11-Radiator connecting ring. Detailed Implementation

[0032] The following examples illustrate the implementation of the present invention in detail, but they do not constitute a limitation on the invention and are merely illustrative. Furthermore, the advantages of the present invention will become clearer and easier to understand by explaining them.

[0033] like Figure 1 and Figure 2The diagram illustrates an adhesive clamping device for assembling a hemispherical transparent radome, comprising a base 1, with a radome positioning device 2 located in the center of the base 1. The radome positioning device 2 accommodates and positions the radome 9, which contains radome aerogel 10. A radome connecting ring 11 is located above the radome 9. A connecting ring positioning device 3 is located above the radome positioning device 2, used to position the radome connecting ring 11. The base 1, radome positioning device 2, and connecting ring positioning device 3 are positioned by positioning pins 4. A central support frame 5 is located above the base 1, with an aerogel fixing assembly 6 located in the center of the central support frame 5. The aerogel fixing assembly 6 extends downward to abut against the radome aerogel 10. Several pressure rod assemblies 7 are also provided on the central support frame 5, extending downward to abut against the connecting ring positioning device 3. The base 1 is an I-beam structure consisting of a top plate 101, a bottom plate 102, and a connecting column 103. The top plate 101 is connected to the top end of the connecting column 103, and the bottom plate 102 is connected to the bottom end of the connecting column 103. The bottom plate 102 has several U-shaped mounting holes 104 for fixing to the mounting platform, which makes it easy to fix the entire device on the platform or place it on a rotating platform, providing good bonding conditions. The bottom plate 102 has a central through hole 105 in the middle for ventilation of the device, preventing negative pressure from causing assembly or disassembly difficulties.

[0034] like Figure 3 As shown, the radome positioning device 2 includes a radome positioning device body 201, with an annular positioning plate 202 at the top. A groove 203 matching the outer surface of the radome 9 is provided in the middle of the radome positioning device body 201 for self-positioning of the hemispherical radome and to prevent damage caused by concentrated stress. A vent 204 is provided at the bottom of the radome positioning device body 201. The annular positioning plate 202 of the radome positioning device 2 has several positioning pin holes 205 for the positioning pins 4 to pass through. Preferably, two symmetrical pin holes are provided, which are clearance-fitted with the positioning pins 4 on the base, with a clearance not exceeding 0.02mm, thus ensuring that the radome, the radome positioning device, and the base are coaxial. The annular positioning plate 202 also has several lifting rings 206 for easy lifting during assembly and disassembly.

[0035] like Figure 4 As shown, the connecting ring positioning device 3 includes a connecting ring positioning device body 301. A positioning groove 302 is provided on the inner side of the connecting ring positioning device body 301. The positioning groove 302 is used to limit the top boss of the radome connecting ring 11. The positioning groove 302 and the boss of the radome connecting ring 11 are in clearance fit, and the clearance is no more than 0.05mm. In this way, the lateral movement distance of the radome connecting ring during bonding is limited, thereby ensuring that the bonding coaxiality of the radome connecting ring is no more than 0.05mm.

[0036] The connecting ring positioning device 3 is provided with several positioning bosses 303. The bottom end face of the positioning bosses 303 is in contact with the top end face of the radome shroud 9. The distance from the top of the positioning boss to the bottom of the positioning groove is equal to the height difference of the outer circular bosses of the radome connecting ring plus the design requirement for the gap between the end face of the radome shroud and the step end face of the radome connecting ring. This is used to ensure the required gap between the end face of the radome shroud and the step end face of the radome connecting ring. The connecting ring positioning device 3 is also provided with several arc-shaped plates 304 arranged corresponding to the positioning bosses 303. The arc-shaped plates 304 are connected to the positioning bosses 303 to form a stepped groove 305. This is used to observe the bonding state and re-measure the bonding gap between the radome connecting ring and the radome shroud. Several positioning holes 306 are provided on the arc-shaped plates 304 for the positioning pins 4 to pass through. By making clearance fit with the positioning pins on the base, the gap is no greater than 0.02mm. This ensures that the coaxiality of the radome connecting ring and the radome shroud is less than 0.1mm. The connecting ring positioning device 301 has several fixing pin holes 307. The connecting ring positioning device 3 is fixed to the outer circular pin hole of the radome connecting ring 11 by fixing pins 8 installed in the fixing pin holes 307. This is used to bond and fix the radome connecting ring 11 to the radome cover 9, and to fix the radome connecting ring to the connecting ring positioning device by fixing pins. This prevents axial movement of the radome connecting ring during the bonding process. The arc plate 304 also has several U-shaped through holes 308. The connecting ring positioning device 3 is connected to the cover positioning device 2 by screws.

[0037] like Figure 5 As shown, the aerogel fixing assembly 6 includes a screw 601, a rotating handle 602 at the top of the screw 601, and a profiled pressure block 603 at the bottom of the screw 601. The screw 601 is threadedly connected to the profiled pressure block, which can rotate relative to the screw to apply downward pressure. The outer profile of the profiled pressure block 603 matches and fits snugly against the inner profile of the radome aerogel 10. The aerogel fixing assembly 6 is threadedly connected to the central support frame 5 for pressurizing the radome aerogel 10, achieving an interference fit.

[0038] The central support frame 5 includes a first support arch 501 and a second support arch 502, which are arranged in a cross shape. The central support frame 5 is fixedly connected to the base 1 by fasteners such as screws and bolts. The cross structure of the central support frame provides a support point for the aerogel fixing assembly, facilitating downward pressure. The pressure rod assembly 7 includes a pressure rod 701, with a pressure rod handle 702 at the top and a pressure head 703 at the bottom. The pressure rod 701 and the pressure head 703 are threaded together. The end face of the pressure rod fits against the end face of the connecting ring positioning device, which is used to apply downward pressure evenly to the connecting ring positioning device during bonding.

[0039] The method of using the adhesive clamping device for assembling a hemispherical wave-transparent antenna radome of the present invention includes the following steps:

[0040] 1) Place the cover positioning device 2 into the base 1.

[0041] 2) Place the antenna cover 9 into the cover positioning device 2 to achieve self-positioning.

[0042] 3) Gently insert the antenna radome aerogel 10 into the radome.

[0043] 4) Fix the central support frame 5 and its aerogel fixing component 6 to the base 1 using screws.

[0044] 5) Use the aerogel fixing component 6 to push the radome aerogel in until the outer surface of the radome aerogel fits against the inner surface of the radome.

[0045] 6) Disassemble the central support frame 5 and the aerogel fixing assembly 6.

[0046] 7) Insert the antenna cover connecting ring 11 into the connecting ring positioning device 3 and lock it with the fixing pin 8.

[0047] 8) Gently place the antenna radome connecting ring 11 and its connecting ring positioning device on the radome positioning device, and align the positioning hole with the positioning pin and insert it downwards.

[0048] 9) After assembling the central support frame 5, pressure rod assembly 7, and aerogel fixing assembly 6, place them on the base and tighten the central support frame 5 with screws;

[0049] 10) Use the aerogel fixing component 6 to tighten the radome aerogel 10 and radome cover 9 to prevent movement.

[0050] 11) Apply pressure evenly to the connecting ring positioning device 3 using the pressure rod assembly 7, so that the positioning boss 303 of the connecting ring positioning device contacts the end face of the antenna radome.

[0051] 12) The connecting ring positioning device 3 and the cover positioning device 2 are connected and tightened with screws.

[0052] 13) Disassemble all tooling and put the antenna radome body, along with the connecting ring positioning device and the radome positioning device, into the oven for curing.

[0053] 14) The remaining tooling (including the base, center support frame, pressure rod assembly and aerogel fixing assembly) is used for the bonding of the next radome.

[0054] The above are merely specific embodiments of the present invention. It should be noted that any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the protection scope of the present invention. Any other aspects not described in detail are prior art.

Claims

1. An adhesive clamping device for assembling a hemispherical wave-transparent antenna radome, characterized in that: The device includes a base (1), and a cover positioning device (2) is provided in the middle of the base (1). The cover positioning device (2) is used to accommodate and position the antenna cover (9). The antenna cover (9) is provided with antenna aerogel (10). An antenna connecting ring (11) is provided above the antenna cover (9). A connecting ring positioning device (3) is provided above the cover positioning device (2). The connecting ring positioning device (3) is used to position the antenna connecting ring (11). The base (1), the cover positioning device (2), and the connecting ring positioning device (3) are positioned by a positioning pin (4). A central support frame (5) is provided above the base (1), and an aerogel fixing component (6) is provided in the middle of the central support frame (5). The aerogel fixing component (6) extends downward and abuts against the antenna radome aerogel (10). Several pressure rod components (7) are also provided on the central support frame (5). The pressure rod components (7) extend downward and abut against the connecting ring positioning device (3).

2. The adhesive clamping device for assembling a hemispherical transparent radome according to claim 1, characterized in that: The base (1) is an I-shaped structure composed of a top plate (101), a bottom plate (102) and a connecting column (103). The top plate (101) is connected to the top end of the connecting column (103), and the bottom plate (102) is connected to the bottom end of the connecting column (103). The bottom plate (102) has a plurality of U-shaped mounting holes (104) for fixing to the mounting platform. The bottom plate (102) has a central through hole (105) in the middle.

3. The adhesive clamping device for assembling a hemispherical transparent radome according to claim 1, characterized in that: The radome positioning device (2) includes a radome positioning device body (201), the top of which is provided with an annular positioning plate (202); the middle part of the radome positioning device body (201) is provided with a groove (203) that matches the outer surface of the antenna radome (9); and the bottom of the radome positioning device body (201) is provided with a vent hole (204).

4. The adhesive clamping device for assembling a hemispherical transparent radome according to claim 3, characterized in that: The annular positioning plate (202) of the cover positioning device (2) is provided with a number of positioning pin holes (205) for the positioning pins (4) to pass through; the annular positioning plate (202) is also provided with a number of lifting rings (206) for hoisting.

5. The adhesive clamping device for assembling a hemispherical transparent radome according to claim 4, characterized in that: The connecting ring positioning device (3) includes a connecting ring positioning device body (301), and a positioning groove (302) is provided on the inner side of the connecting ring positioning device body (301). The positioning groove (302) is used to limit the top boss of the antenna radome connecting ring (11). The connecting ring positioning device (3) is provided with a plurality of positioning bosses (303), the bottom end face of the positioning bosses (303) is in contact with the top end face of the antenna cover (9).

6. The adhesive clamping device for assembling a hemispherical transparent antenna radome according to claim 5, characterized in that: The connecting ring positioning device (3) is also provided with a number of arc-shaped plates (304) arranged corresponding to the positioning boss (303). The arc-shaped plates (304) and the positioning boss (303) are connected to form a stepped groove (305). The arc-shaped plates (304) are provided with a number of positioning holes (306) for the positioning pin (4) to pass through.

7. The adhesive clamping device for assembling a hemispherical transparent radome according to claim 6, characterized in that: The main body (301) of the connecting ring positioning device is provided with a plurality of fixing pin holes (307), and the connecting ring positioning device (3) is fixed to the antenna radome connecting ring (11) by fixing pins (8) installed in the fixing pin holes (307); the arc plate (304) is also provided with a plurality of U-shaped through holes (308).

8. The adhesive clamping device for assembling a hemispherical transparent radome according to any one of claims 1 to 7, characterized in that: The central support frame (5) includes a first support arch (501) and a second support arch (502), the first support arch (501) and the second support arch (502) are arranged in a cross shape; the central support frame (5) is fixedly connected to the base (1) by fasteners.

9. The adhesive clamping device for assembling a hemispherical transparent radome according to any one of claims 1 to 7, characterized in that: The aerogel fixing assembly (6) includes a screw (601), a rotating handle (602) is provided at the top end of the screw (601), and a profile pressing block (603) is provided at the bottom end of the screw (601). The outer profile of the profile pressing block (603) matches the inner profile of the antenna radome aerogel (10).

10. The adhesive clamping device for assembling a hemispherical wave-transparent antenna radome according to any one of claims 1 to 7, characterized in that: The pressure rod assembly (7) includes a pressure rod (701), a pressure rod handle (702) is provided at the top of the pressure rod (701), and a pressure head (703) is provided at the bottom of the pressure rod (701). The pressure rod (701) and the pressure head (703) are threadedly connected.

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