A Beidou beacon comprehensive environmental test fixture and operation method

Abstract

The present invention relates to a Beidou beacon comprehensive environmental test fixture and an operation method, wherein the fixture comprises at least a mounting plate and a hexahedron fixed on the mounting plate; the mounting plate is provided with a mounting interface fixed with a vibration test bench, a constant acceleration test bench and the hexahedron; the mounting plate is a rectangular aluminum plate structure. The Beidou beacon comprehensive environmental test fixture has the advantages of small mass, large rigidity, tight connection, convenient installation, and no structural "resonance" or "vibration isolation" within the test frequency range.

Description

Technical Field

[0001] The invention belongs to the field of fixture design, and in particular relates to a Beidou beacon comprehensive environmental test fixture and an operation method. Background Art

[0002] Environmental testing mainly studies the impact of various environmental conditions on products. The purpose is to verify whether the product meets the expected quality goals in design and manufacturing through environmental testing. The purpose of developing products is to expose and analyze the failure laws and failure mechanisms of products under various environmental conditions, and provide an important basis for improving product reliability and formulating reliability improvement plans. Reliability review or acceptance is carried out on finalized products.

[0003] Environmental test fixtures are an indispensable part of environmental testing. On the one hand, their functions are to fix the product, and on the other hand, to transmit the motion and energy of environmental test equipment such as vibration tables to the product without distortion. Therefore, environmental test fixtures should be designed reasonably to avoid "resonance" and "vibration isolation" and meet product testing requirements.

[0004] At present, Beidou beacon products are in the development stage, and need to undergo vibration tests in three directions: X, Y, and Z; impact tests and constant acceleration tests in six directions: X, -X, Y, -Y, Z, and -Z. There is no corresponding special environmental test fixture for Beidou beacon products. It is urgent to design a Beidou beacon comprehensive environmental test fixture to simultaneously meet the environmental test requirements of Beidou beacon products for vibration in three directions, impact in six directions, and constant acceleration in six directions. Summary of the invention

[0005] The present invention provides a Beidou beacon comprehensive environmental test fixture and an operating method which have small mass, high rigidity, tight connection, easy installation, and no structural "resonance" or "vibration isolation" within the test frequency range, so as to solve the problems existing in the prior art.

[0006] The technical solution of the present invention is:

[0007] A Beidou beacon comprehensive environmental test fixture comprises at least a mounting plate and a hexahedron fixed on the mounting plate;

[0008] The mounting plate is provided with a mounting interface fixed to the vibration test bench, the constant acceleration test bench and the hexahedron;

[0009] The mounting plate is a rectangular aluminum plate structure.

[0010] The aforementioned hexahedron is composed of a pentahedral base and a cover plate; a stepped hole is provided at each of the four corners of the cover plate, and the stepped hole is used as a screw through hole for fixing the cover plate to the pentahedral base; a first rectangular hole is provided on the cover plate, and the first rectangular hole is used as an installation clearance hole for disassembling screws; two first screw through holes are provided on each of the two vertically opposite sides of the first rectangular hole on the cover plate, and the first screw through holes are used as an installation interface fixedly connected to the impact test bench, and at the same time, used as an installation interface fixedly connected to the front side of the pentahedral base;

[0011] The five surfaces of the pentahedral base are mounting surfaces, and each of the five mounting surfaces is provided with a group of four second screw through holes, which are used as mounting interfaces for being fixedly connected to the impact test bench;

[0012] A group of four third threaded holes are provided on the inner side of the bottom surface of the base for installing and fixing the Beidou beacon control box;

[0013] The left, right, rear side surfaces and top surface of the base are each provided with rectangular holes of different sizes, which are used as installation holes for disassembling screws;

[0014] The top surface of the base is provided with a group of 12 fourth screw through holes arranged on the same circumference for installing the Beidou beacon transmitting tube.

[0015] A third screw through hole is provided at each of the four corners of the aforementioned mounting plate, which is used as a mounting interface for fixed connection with the constant acceleration test bench;

[0016] The mounting plate is provided with a central screw hole at the center, four evenly arranged first concentric screw holes on the first concentric circle, four evenly arranged second concentric screw holes on the second concentric circle, four evenly arranged third concentric screw holes on the third concentric circle, and six symmetrically arranged fourth concentric screw holes on the fourth concentric circle in the region within the third screw hole from the center outward in sequence, wherein the first concentric screw hole, the second concentric screw hole, the third concentric screw hole, and the fourth screw hole are all used as mounting interfaces fixedly connected to the vibration test bench;

[0017] The mounting plate is provided with four fifth screw through holes located at the four corners of the same rectangle on the outside of the fourth concentric circle, and serves as a mounting interface fixedly connected to the second screw through holes.

[0018] A space for manual handling operation is respectively arranged on the upper side and the lower side of the aforementioned mounting plate.

[0019] The operation method of the Beidou beacon comprehensive environmental test fixture is as follows:

[0020] Impact test process: Only the hexahedron is used. First, the Beidou beacon product is fixed to the corresponding installation position of the hexahedron. Then, one of the faces of the hexahedron with the Beidou beacon product is fixed to the impact test bench surface through a screw. After tightening, an impact test in one direction is carried out. By flipping the hexahedron and changing its installation connection surface with the impact test bench surface, the Beidou beacon product can be impact tested in six directions.

[0021] Vibration test process: First, fix the mounting plate to the center of the vibration test bench with 19 screws, then fix the Beidou beacon product to the corresponding mounting position of the hexahedron, and then fix the hexahedron with the Beidou beacon product to the mounting plate with 4 screws and washers. After tightening, carry out a vibration test in one direction; by flipping the hexahedron and changing its mounting connection surface with the mounting plate, the Beidou beacon product can be subjected to vibration tests in three directions.

[0022] Constant acceleration test process: first, fix the mounting plate to the table top of the constant acceleration test bench with 6 bolts, then fix the Beidou beacon product to the corresponding mounting position of the hexahedron, and then fix the hexahedron with the Beidou beacon product to the mounting plate with 4 screws and washers. After tightening, carry out a constant acceleration test in one direction; by flipping the hexahedron and changing its mounting connection surface with the mounting plate, the Beidou beacon product can be tested in six directions with constant acceleration.

[0023] The invention has the advantages of small mass, high rigidity, tight connection, convenient installation, and no structural "resonance" or "vibration isolation" within the test frequency range.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The diagram is a structural diagram of a Beidou beacon comprehensive environmental test fixture.

[0026] Figure 2 It is a structural diagram of the mounting plate.

[0027] Figure 3 yes Figure 2 AA view of the .

[0028] Figure 4 It is a schematic diagram of the structure of a hexahedron.

[0029] Figure 5 It is a structural diagram of the cover.

[0030] Figure 6 It is a structural diagram of a pentahedral stand.

[0031] Description of reference numerals:

[0032] 1. Mounting plate; 2. Hexahedron; 3. Pentahedron base; 4. Step hole; 5. Second screw hole; 6. Threaded hole; 7. Rectangular hole; 8. Fourth screw hole; 9. Cover plate; 10. First rectangular hole; 11. First screw hole; 12. Third screw hole; 13. Center screw hole; 14. First concentric screw hole; 15. Second concentric screw hole; 16. Third concentric screw hole; 17. Fourth screw hole; 18. Fifth screw hole; 19. Space for manual handling operation; 20. Screw; 21. Washer. DETAILED DESCRIPTION

[0033] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0034] The exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms used in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements are marked with the same reference numerals.

[0035] Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0036] The following specific implementation manner is now combined with the accompanying drawings to illustrate a Beidou beacon comprehensive environmental test fixture provided by the present invention, which has the advantages of small mass, high rigidity, tight connection, easy installation, and no structural "resonance" or "vibration isolation" within the test frequency range, thereby solving the problems existing in the prior art.

[0037] Embodiment 1:

[0038] Figure 1 The embodiment of the present invention provides a Beidou beacon comprehensive environmental test fixture, which at least includes a mounting plate 1 and a hexahedron 2 fixed on the mounting plate 1 made of aluminum; wherein the mounting plate 1 is provided with a mounting interface fixed to the vibration test bench, the constant acceleration test bench and the hexahedron 2; the mounting plate 1 is a rectangular aluminum plate structure, combined with Figure 2It can be seen that a third screw through hole 12 is provided at each of the four corners of the mounting plate 1, which is used as a mounting interface fixedly connected to the constant acceleration test bench, and the mounting hole 1 is provided with a center screw through hole 13 at the center, four evenly arranged first concentric screw through holes 14 on the first concentric circle, four evenly arranged second concentric screw through holes 15 on the second concentric circle, four evenly arranged third concentric screw through holes 16 on the third concentric circle, and six symmetrically arranged fourth screw through holes 17 on the fourth concentric circle in the area within the third screw through hole 12, and the first concentric screw through hole 14, the second concentric screw through hole 15, the third concentric screw through hole 16 and the fourth concentric screw through hole 17 are all used as mounting interfaces fixedly connected to the vibration test bench; at the same time, four fifth screw through holes 18 are provided on the mounting plate 1 at the outer side of the fourth concentric circle, which are respectively located at the four corners of the same rectangle, and are used to connect to the vibration test bench. Figure 6 The second screw through hole 5 on the pentahedral base 3 is fixedly connected to the mounting interface, so that the hexahedron 2 is fixedly connected to the mounting plate 1 through the screws 20 and washers 21 (two stacked washers).

[0039] For easy transportation, Figure 3 As shown, in this embodiment, a manual carrying operation space 19 is respectively provided on the upper side and the lower side of the installation plate 1.

[0040] Embodiment 2:

[0041] Based on the first embodiment, Figure 4 , 5 6, it can be seen that the hexahedron 2 is composed of a pentahedral base 3 and a cover plate 9 made of aluminum; wherein the structure of the cover plate 9 is as follows Figure 5 As shown, a stepped hole 4 is provided at each of its four corners, and the stepped hole 4 is used as a screw through hole for fixing the cover plate 9 to the pentahedral base 3, specifically, the cover plate 9 is fixedly connected to the front side of the pentahedral base 3. At the same time, a first rectangular hole 10 is provided on the cover plate 9, and the first rectangular hole 10 is used as an installation clearance hole for disassembling screws; and two first screw through holes 11 are provided on each of the vertically opposite sides of the first rectangular hole 10, and the first screw through holes 11 are used as an installation interface for fixing to the impact test bench, and at the same time, as an installation interface for fixing the cover plate 9 to the front side of the pentahedral base 3.

[0042] Depend on Figure 6It is obvious that the five faces of the pentahedral base 3 are all mounting faces, and a group of four second screw holes 5 are set on the five mounting faces, which are used as mounting interfaces for fixing with the impact test bench; and a group of four threaded holes 6 are set on the inner side of the bottom face of the base 3, which are used for mounting and fixing the Beidou beacon control box; at the same time, the left, right, rear side faces and top face of the base 3 are each provided with rectangular holes 7 of different sizes, which are used as installation holes for disassembly and assembly screws; and a group of 12 fourth screw holes 8 set on the same circumference for mounting the Beidou beacon launch tube are set on the top face of the base 3. In addition, the pentahedral base 3 in this embodiment is formed by integral casting.

[0043] The Beidou beacon comprehensive environmental test fixture provided in the above embodiments can be used as a vibration, impact, and constant acceleration comprehensive environmental test fixture for Beidou beacon products. The product only needs to be clamped once, and the test requirements of the product in all directions can be achieved by flipping the hexahedron, which effectively simplifies the operation process and improves the test efficiency. At the same time, the test adopts a split structure with small mass, high rigidity, and tight connection. No structural "resonance" or "vibration isolation" will occur within the test frequency range, meeting the comprehensive environmental test requirements of Beidou beacon products.

[0044] The specific operation of the Beidou beacon comprehensive environmental test fixture is as follows:

[0045] Impact test process: Only hexahedron 2 is used. First, the Beidou beacon product is fixed to the corresponding installation position of hexahedron 2. Then one of the faces of hexahedron 2 with the Beidou beacon product is fixed to the impact test bench table with 4 screws. After tightening, an impact test in one direction is carried out. By flipping hexahedron 2 and changing its installation connection surface with the impact test bench table, the Beidou beacon product can be impact tested in six directions.

[0046] Vibration test process: First, install the mounting plate 1 through 19 screws (including Figure 2 The 1 center screw hole 13, four first concentric screw holes 14, four second concentric screw holes 15, four third concentric screw holes 16, four fourth screw holes 17 and six fifth screw holes 18 shown in the figure are fixed to the center of the vibration test bench, and then the Beidou beacon product is fixed to the corresponding installation position of the hexahedron 2. After that, the hexahedron 2 with the Beidou beacon product is fixed to the mounting plate 1 through 4 screws 20 and washers 21 (two stacked washers). After tightening, a vibration test in one direction is carried out. By flipping the hexahedron 2 and changing its mounting connection surface with the mounting plate 1, the Beidou beacon product vibration test in three directions is realized.

[0047] Constant acceleration test process: First, the mounting plate 1 is fixed to the constant acceleration test bench table with 6 bolts, and then the Beidou beacon product is fixed to the corresponding installation position of the hexahedron 2. Then, the hexahedron 2 with the Beidou beacon product is fixed to the mounting plate 1 with 4 screws 20 and washers 21 (two stacked washers). After tightening, a constant acceleration test in one direction is carried out. By flipping the hexahedron 2 and changing its installation connection surface with the mounting plate 1, the Beidou beacon product constant acceleration test in six directions is realized.

[0048] In the absence of conflicts, technicians in this field can combine the relevant technical features in the above examples according to actual conditions to achieve corresponding technical effects. The specific combinations are not described here one by one.

[0049] The above is only a preferred embodiment of the present invention. The present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention. The above detailed description of the implementation mode of the present invention is combined with the accompanying drawings, but the present invention is not limited to the above implementation mode. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention, which are all within the protection scope of the technology.

Claims

1. A Beidou beacon comprehensive environmental test fixture, characterized in that: At least comprising a mounting plate (1) and a hexahedron (2) fixed on the mounting plate (1); The mounting plate (1) is provided with a mounting interface fixed to the vibration test bench, the constant acceleration test bench and the hexahedron (2); The mounting plate (1) is a rectangular aluminum plate structure; The hexahedron (2) is composed of a pentahedral base (3) and a cover plate (9); A stepped hole (4) is provided at each of the four corners of the cover plate (9), and the stepped hole (4) is used as a screw through hole for fixing the cover plate (9) to the pentahedral base (3); a first rectangular hole (10) is provided on the cover plate (9), and the first rectangular hole (10) is used as a mounting clearance hole for disassembling screws; Two first screw through holes (11) are respectively arranged on the cover plate (9) on two sides of the first rectangular hole (10) in the vertical direction opposite to each other, and the first screw through holes (11) are used as a mounting interface for fixed connection with the impact test bench, and are also used as a mounting interface for fixed connection with the front side of the pentahedral base (3); The five surfaces of the pentahedral base (3) are mounting surfaces, and each of the five mounting surfaces is provided with a group of four second screw through holes (5) serving as mounting interfaces for fixed connection with the impact test bench; A group of four threaded holes (6) are provided on the inner side of the bottom surface of the base (3) for mounting and fixing the Beidou beacon control box; The left, right, rear side surfaces and top surface of the base (3) are each provided with rectangular holes (7) of different sizes, which are used as installation clearance holes for disassembling screws; the top surface of the base (3) is provided with a group of 12 fourth screw through holes (8) arranged on the same circumference for installing the Beidou beacon transmitting tube; A third screw through hole (12) is provided at each of the four corners of the mounting plate (1) and is used as a mounting interface for being fixedly connected to the constant acceleration test bench; a central screw through hole (13) at the center, four evenly arranged first concentric screw through holes (14) on the first concentric circle, four evenly arranged second concentric screw through holes (15) on the second concentric circle, four evenly arranged third concentric screw through holes (16) on the third concentric circle, and six symmetrically arranged fourth concentric screw through holes (17) on the fourth concentric circle are sequentially provided on the mounting plate (1) from the center outward, and the first concentric screw through hole (14), the second concentric screw through hole (15), the third concentric screw through hole (16), and the fourth concentric screw through hole (17) are all used as mounting interfaces for being fixedly connected to the vibration test bench; The mounting plate (1) is provided with four fifth screw through holes (18) located at the four corners of the same rectangle at the outer side of the fourth concentric circle, serving as mounting interfaces fixedly connected to the second screw through holes (5); The pentahedral base (3) is formed by integral casting.

2. The Beidou beacon comprehensive environmental test fixture as claimed in claim 1, characterized in that: A manual handling operation space (19) is provided on each of the upper and lower sides of the mounting plate (1).

3. The method for operating the Beidou beacon comprehensive environmental test fixture as described in claim 1 or 2, characterized in that: The specific operations are as follows: Impact test process: Only the hexahedron is used. First, the Beidou beacon product is fixed to the corresponding installation position of the hexahedron. Then, one of the faces of the hexahedron with the Beidou beacon product is fixed to the impact test bench surface with screws. After tightening, an impact test in one direction is carried out. By flipping the hexahedron and changing its installation connection surface with the impact test bench surface, the Beidou beacon product can be impact tested in six directions. Vibration test process: First, fix the mounting plate to the center of the vibration test bench with 19 screws, then fix the Beidou beacon product to the corresponding mounting position of the hexahedron, and then fix the hexahedron with the Beidou beacon product to the mounting plate with 4 screws and washers. After tightening, carry out a vibration test in one direction; by flipping the hexahedron and changing its mounting connection surface with the mounting plate, the Beidou beacon product can be subjected to vibration tests in three directions. Constant acceleration test process: first, fix the mounting plate to the table top of the constant acceleration test bench with 6 bolts, then fix the Beidou beacon product to the corresponding mounting position of the hexahedron, and then fix the hexahedron with the Beidou beacon product to the mounting plate with 4 screws and washers. After tightening, carry out a constant acceleration test in one direction; by flipping the hexahedron and changing its mounting connection surface with the mounting plate, the Beidou beacon product can be tested in six directions with constant acceleration.

Images