Tension-shear strength testing device for non-deployable curved surface antenna reflector insert combination unit

Abstract

The utility model discloses a non-deployable curved surface antenna reflector insert combination unit tension-shear strength testing device, and relates to the antenna reflector technology, and the device comprises a pedestal which provides an installation interface and is connected with a tension tester; the supporting plate is fixed on the base based on a side plate, and a specified angle is formed between the supporting plate and the base; the cover plate is connected with the supporting plate so that the insert combination unit can be wrapped, clamped and fixed after the cover plate is connected with the supporting plate, an opening is formed in the middle of the cover plate, and the pulling-up end of the insert combination unit is led out through the opening; and one end of the pull rod is T-shaped and is used for being fixed with the pull-up end of the insert combination unit, and the other end of the pull rod is connected to a tension tester. The utility model provides a testing device capable of directly measuring the tensile-shear strength of a non-deployable curved surface antenna reflector insert combination unit.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of antenna reflectors, in particular to a non-developable curved surface antenna reflector inlay assembly unit tensile shear strength testing device. BACKGROUND

[0002] The antenna reflector is a key component of a certain tracking radar, is a non-developable rotary parabolic surface structure functional part composed of a composite material, a honeycomb core and a metal inlay, has a complex structure, high surface precision, and integrates electrical functions and structural bearing, functions to connect a radome and a high-frequency box, guarantees correct path reflection and electromagnetic wave reception, has sufficient structural strength and rigidity under strong vibration service conditions, and guarantees stable and reliable antenna operation. As a main bearing structure of the entire antenna structure, the reliability of the inlay adhesive assembly unit determines the stability of the relative position of the entire antenna, and is one of key elements of long-term service performance reliability of the radar system. In order to accurately reflect the bearing capacity of the antenna reflector, the tensile shear strength of the inlay adhesive assembly unit needs to be tested.

[0003] A connecting structure and connecting method of a radome and a pre-buried metal ring are disclosed in Chinese Patent CN 213600485 U. In the radome processing process, a metal pre-buried part is arranged, the fixation of the pre-buried part is completed through the adhesive force of the composite material itself and the high-temperature and high-pressure curing environment, and the adhesive strength is increased in the mode of coating adhesive on the concave and convex surfaces of the contact surface. However, the structural strength is not tested. The currently disclosed composite material tensile shear strength testing method is limited to testing the plane tensile shear of a single composite material plate, and has not yet proposed a tensile shear strength test for the inlay assembly unit in a non-developable curved surface composite material part. SUMMARY

[0004] The embodiment of the application provides a non-developable curved surface antenna reflector inlay assembly unit tensile shear strength testing device, which is used to propose a testing device capable of directly measuring the tensile shear strength of the non-developable curved surface antenna reflector inlay assembly unit.

[0005] The embodiment of the application provides a non-developable curved surface antenna reflector inlay assembly unit tensile shear strength testing device, which comprises:

[0006] A base 1 is provided, which provides a mounting interface and is connected with a tensile testing machine;

[0007] A support plate 40 is fixed on the base 1 based on a side plate, and the support plate 40 and the base 1 are at a specified angle;

[0008] A cover plate 2 is connected with the support plate 40 so as to sandwich and fix the inlaid piece combination unit 14 after being connected with the support plate 40, and the cover plate 2 has an opening in the middle so as to lead out the pull-up end of the inlaid piece combination unit 14 through the opening;

[0009] A pull rod 3 has a "T" shape at one end and is used to fix the pull-up end of the inlaid piece combination unit 14, and the other end of the pull rod 3 is connected to a tensile testing machine.

[0010] Optionally, a plurality of through grooves are arranged on the base 1 so as to be connected with the tensile testing machine through the through grooves by using screws.

[0011] Optionally, the side plates include a first side plate 34 and a second side plate 35, which are arranged based on two pairs of edges of the base 1 respectively.

[0012] Optionally, a plurality of threaded holes are arranged on the support plate 40 and the cover plate 2 so as to sandwich and fix the inlaid piece combination unit 14 based on each threaded hole.

[0013] Optionally, the support plate 40 and the cover plate 2 extend out four leading-out parts so as to arrange threaded holes based on the four leading-out parts.

[0014] Optionally, a through hole is arranged on the "T" shaped end of the pull rod 3;

[0015] A pull ring 4 is arranged on the leading-out end of the inlaid piece combination unit 14, and the pull ring 4 is connected to the "T" shaped end of the pull rod 3 through the through hole and an appropriate screw.

[0016] The test device of the embodiment of the present application can directly test the tensile shear strength of the inlaid piece combination unit in the non-developable curved surface antenna reflector.

[0017] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the accompanying drawings indicate the same or similar components. In the drawings:

[0019] Figure 1 The overall structure of the inlaid piece combination unit tensile shear strength test device of the embodiment of the present application is shown in the figure;

[0020] Figure 2 Explosive schematic diagram of the pull-shear strength test device for the inlay assembly unit of the embodiment of the present application;

[0021] Figure 3 Schematic diagram of the base part structure of the pull-shear strength test device for the inlay assembly unit of the embodiment of the present application;

[0022] Figure 4 Schematic diagram of the rear view structure of the base of the pull-shear strength test device for the inlay assembly unit of the embodiment of the present application;

[0023] Figure 5 Schematic diagram of the local connection of the pull rod of the pull-shear strength test device for the inlay assembly unit of the embodiment of the present application. DETAILED DESCRIPTION

[0024] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art.

[0025] The inlay assembly unit is installed on the back of a certain non-developable curved surface antenna reflector and serves as the main load-bearing structure of the antenna reflector to bear the vibration impact load and other loads during the service of the antenna reflector. In order to accurately reflect the load-bearing capacity, the pull-shear strength of the inlay assembly unit needs to be tested. Since the surrounding of the inlay assembly unit is a honeycomb sandwich structure, in order to reduce the impact of cutting on the honeycomb structure, a larger circle is drawn around the sample during cutting, the large circle is cut first, and then the edge is polished to the corresponding test size using a grinder. In order to accurately simulate the vibration impact load borne by the antenna reflector during the service, the embodiment of the present application provides a pull-shear strength test device for the inlay assembly unit of a non-developable curved surface antenna reflector, as shown in Figures 1-3 , which comprises:

[0026] A base 1 is provided to provide a mounting interface and is connected to a pull testing machine; as shown in Figure 1 The base 1 is fixed on the electronic pull testing machine by screws 11-13 and nuts 15-17.

[0027] A support plate 40 is fixed on the base 1 based on a side plate, and the support plate 40 is at a specified angle with the base 1;

[0028] A cover plate 2 is connected to the support plate 40 to clamp and fix the inlay assembly unit 14 after being connected to the support plate 40, and the cover plate 2 has an opening in the middle to lead out the pull-up end of the inlay assembly unit 14. In a specific example, as shown inFigure 2 As shown, the insert assembly unit 14 is fixed to the base 1 by the cover plate 2, screws 7-10 and nuts 18-21.

[0029] The pull rod 3 has a "T" shape at one end, which is used to fix it to the lifting end of the insert assembly unit 14, and the other end of the pull rod 3 is connected to the tensile testing machine.

[0030] In some embodiments, the base 1 is provided with multiple through slots for connection to a tensile testing machine using screws. In a specific example, the base 1 includes a base plate, side plates 34-35, and a support plate 40. The surface of the base plate has through slots 37-39, which are connected to the tensile testing machine using corresponding screws 11-13.

[0031] Specifically, such as Figure 4 As shown, screw 11 passes through slot 37 and is fixed to the electronic tensile testing machine with nut 17; screw 12 passes through slot 38 and is fixed to the electronic tensile testing machine with nut 16; screw 13 passes through slot 39 and is fixed to the electronic tensile testing machine with nut 17.

[0032] In some embodiments, the side plate includes a first side plate 34 and a second side plate 35, respectively disposed on two opposite sides of the base 1.

[0033] In some embodiments, such as Figure 2 , Figure 3 As shown, the support plate 40 and the cover plate 2 are provided with a plurality of corresponding threaded holes to clamp and fix the insert assembly unit 14 based on each threaded hole.

[0034] In some embodiments, the support plate 40 and the cover plate 2 extend outwards with four leads, and threaded holes are provided based on the four leads. Specifically, the cover plate 2 is provided with threaded holes 26-29, all of which are through holes. In a specific example, screws 7, 8, 9, and 10 pass through the threaded holes 29, 28, 27, and 26 on the cover plate 2 and the threaded holes 23, 24, 25, and 22 on the support plate 40, respectively, and are fixed to the base by nuts 23, 24, 25, and 22.

[0035] In some embodiments, the pull rod 3 has a through hole at one of its "T"-shaped ends; the lead-out end of the insert assembly unit 14 is provided with a pull ring 4, which is connected to the "T"-shaped end of the pull rod 3 through the through hole and a matching screw.

[0036] like Figure 5As shown, the pull ring 4 is mounted on the threaded hole 33 by screwing, the threaded hole 33 is a counterbore. The screw 5 passes through the hole 31, the threaded hole 32, the hole 30 in turn, and is connected with the nut 6 to fix the pull rod 3 on the pull ring 4, and is connected with the electronic pull testing machine through the pull rod 3.

[0037] The application designs a device to directly test the tensile shear strength of the inlay assembly unit, which can more accurately reflect the bearing capacity of the antenna reflector. The test device of the application fixes the measured object by the way of cover plate plus screw and nut, and can be applied to measured objects with different honeycomb sandwich structure thicknesses by relying on the length of the screw, while ensuring that the measured object does not displace during the test.

[0038] The side plate is used to ensure that the angle of the measured piece placed is the same as the stress angle in the actual service state, so that the static tensile shear coupling test can be used to measure the vibration impact strength of the inlay assembly unit.

[0039] It should be noted that in the embodiments of the application, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that the processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or further include elements inherent in such processes, methods, articles or devices. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0040] The above application embodiment serial numbers are only for description, not representing the advantages and disadvantages of the embodiments.

[0041] The embodiments of the application are described above in combination with the drawings, but the application is not limited to the above specific embodiments, the above specific embodiments are only illustrative, not restrictive, and those skilled in the art can make many forms under the inspiration of the application without departing from the purpose of the application and the scope protected by the claims, which are all within the protection of the application.

Claims

1. A non-developable curved surface antenna reflector tile assembly unit tensile shear strength testing apparatus, characterized by, The utility model relates to a kind of pull-out test machine for testing the pull-out strength of inlaid piece combination unit, including: Base (1) provides installation interface, connect with pull-out test machine; Supporting plate (40) is fixed on the base (1) based on side plate, and the supporting plate (40) is at specified angle with the base (1); Cover plate (2) is connected with the supporting plate (40), so that inlaid piece combination unit (14) is clamped and fixed after being connected with the supporting plate (40), there is opening in the cover plate (2), to lead out the pull-up end of the inlaid piece combination unit (14) by the opening; Pull rod (3), one end is "T” shape, for being fixed with the pull-up end of the inlaid piece combination unit (14), the other end of the pull rod (3) is connected to pull-out test machine.

2. The non-developable curved surface antenna reflector tile assembly unitized tensile shear strength testing apparatus of claim 1, wherein, The base (1) is provided with a plurality of through grooves, to be connected with pull-out test machine by the through groove using screw.

3. The non-developable curved surface antenna reflector tile assembly unitized tensile shear strength testing apparatus of claim 1, wherein, The side plate includes first side plate (34) and second side plate (35), and is arranged based on two pairs of edges of the base (1) respectively.

4. The non-developable curved surface antenna reflector tile assembly unitized tensile shear strength testing apparatus of claim 1, wherein, The supporting plate (40) and the cover plate (2) are provided with a plurality of corresponding threaded holes, to realize the clamping and fixing of inlaid piece combination unit (14) based on each threaded hole.

5. The non-developable curved surface antenna reflector tile assembly unitized tensile shear strength testing apparatus of claim 4, wherein, The supporting plate (40) and the cover plate (2) extend 4 lead-out parts, to set threaded hole based on 4 lead-out parts.

6. The non-developable curved surface antenna reflector tessellation assembly unitized pull- shear strength test apparatus of claim 1 wherein, The pull rod (3), "T” shape one end is provided with through hole; The lead-out end of the inlaid piece combination unit (14) is provided with pull ring (4), and the pull ring (4) is connected to the "T” shape one end of the pull rod (3) by the through hole and the screw of adaptation.

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