A four-in-one test system

Abstract

The application discloses a four-combination test system, which comprises a test box, a test table, and a vibration generator. The test box comprises a test box body, and the test box body is provided with a first communication part. The test table is arranged in the first communication part, and a gap exists between the test table and the first communication part. The test table is used for placing a test piece. The vibration generator comprises a vibration generation box body and a vibration generation assembly. The vibration generation box body is provided with a second communication part, and the second communication part and the first communication part are arranged in communication. The vibration generation assembly comprises a moving coil assembly. The test table is connected to the moving coil assembly. The moving coil assembly is arranged in the second communication part, and a gap exists between the moving coil assembly and the second communication part. The test box and the vibration generator can be communicated, so that the air pressure in the test box and the vibration generator is consistent, the test table is prevented from deviating from a predetermined position, and the required test result can be obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of test system, and particularly relates to a four-combined test system. BACKGROUND

[0002] In the current test field, the four-combined test system is indispensable equipment for testing reliability in the field, and the four-combined test system can be used to apply the comprehensive stress simulating the actual working condition of the product to the product in the development stage to test the reliability. The three-combined test system is the most widely used conventional electric vibration system at present, and is suitable for general military and civilian test projects. However, during the operation of the aerospace equipment, there is a positive and negative pressure environment. In order to simulate different air pressure environments, the thickness of the box wall of the test box is usually increased on the basis of the three-combined test system, and the air in the test box is pumped out by a vacuum pump or high-pressure gas is filled into the test box by an air compressor to perform the test in the four-combined test system.

[0003] The prior art discloses a four-combined test system, which completely separates the vibration generator and the test box into two sealed chambers through a transition head and sealing rubber, and controls the air pressure in the vibration generator and the test box through different pressure adjusting devices. However, the above-mentioned method cannot guarantee that the air pressure of the vibration generator and the air pressure in the test box are consistent, that is, there is still a pressure difference between the two, the moving coil assembly of the vibration generator is offset from the original balance position, the test table connected with the moving coil assembly is offset from the predetermined position, the stroke in one direction of the vibration is lost, and the standard running stroke of the test piece in the four-combined test system is 51mm, 76mm and 100mm. When the offset occurs, the standard running stroke cannot be met, and thus the required test result cannot be obtained. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the defects in the prior art that the air pressure of the vibration generator and the air pressure in the test box have a pressure difference, the test table is offset from the predetermined position, the standard running stroke cannot be met, and thus the required test result cannot be obtained, so as to provide a four-combined test system.

[0005] A four-combined test system, comprising:

[0006] A test box, the test box comprises a test box body, and the test box body is provided with a first communication part;

[0007] A test table, the test table is arranged in the first communication part, and there is a gap between the test table and the first communication part, and the test table is used for placing a test piece;

[0008] The vibration generator comprises a vibration generating box and a vibration generating assembly, the vibration generating box is provided with a second communication part, the second communication part and the first communication part are in communication; the vibration generating assembly comprises a moving coil assembly, the test bench is connected to the moving coil assembly, the moving coil assembly is arranged in the second communication part, and a gap exists between the moving coil assembly and the second communication part.

[0009] Further, a sealing structure is further included, the sealing structure connects the test box and the vibration generating box, the sealing structure has a third communication part, the third communication part is in communication with the first communication part and the second communication part.

[0010] Further, the sealing structure comprises a soft sealing piece and a hard sealing piece, the soft sealing piece is arranged between a first mounting wall of the hard sealing piece and the test box, and the three are connected through a fastener, the soft sealing piece is arranged between a second mounting wall of the hard sealing piece and the vibration generating box, and the three are connected through the fastener.

[0011] Further, a water blocking structure is further included, the water blocking structure comprises a first water blocking piece and a second water blocking piece, the test bench is provided with the first water blocking piece, the test box is provided with the second water blocking piece, a gap exists between the first water blocking piece and the second water blocking piece, and the first water blocking piece and the second water blocking piece block each other partially.

[0012] Further, the vibration generating assembly further comprises a first air bag, the first air bag is connected to the moving coil assembly through a guide piece.

[0013] Further, a base is further included, the test box is arranged on the base, the vibration generating box is arranged in the base, and a second air bag is arranged between the base and the vibration generating box.

[0014] Further, the base is provided with a first mounting piece, the vibration generating box is provided with a second mounting piece, and the second air bag is arranged between the first mounting piece and the second mounting piece.

[0015] Further, an air inlet structure is further included, the air inlet structure comprises an air inlet source, a first air inlet pipeline and a second air inlet pipeline, the air inlet source is connected to the first air bag through the first air inlet pipeline and connected to the second air bag through the second air inlet pipeline, wherein the first air inlet pipeline is provided with a first pressure reducing valve and a first reversing valve, and the second air inlet pipeline is provided with a second pressure reducing valve and a second reversing valve.

[0016] Further, the first air bag is correspondingly provided with a first electric centering structure, the second air bag is correspondingly provided with a second electric centering structure, the air pressure of the first air bag is adjusted through the first electric centering structure, and the air pressure of the second air bag is adjusted through the second electric centering structure.

[0017] Further, the test box is cylindrically arranged.

[0018] The technical scheme of the present application has the following advantages:

[0019] 1. The four-combined test system provided by the present application comprises a test box, a test bench, a vibration generator, wherein the test box comprises a test box body provided with a first communication part; the test bench is arranged in the first communication part and has a gap with the first communication part, and is used for placing a test piece; the vibration generator comprises a vibration generation box body and a vibration generation assembly, the vibration generation box body is provided with a second communication part, the second communication part and the first communication part are arranged in communication, and the vibration generation assembly comprises a moving coil assembly, the test bench is connected to the moving coil assembly, and the moving coil assembly is arranged in the second communication part and has a gap with the second communication part. The four-combined test system has the following advantages: the first communication part and the second communication part are arranged in communication, and the test bench and the first communication part have a gap and the moving coil assembly and the second communication part have a gap, so that the test box and the vibration generator are connected internally, the internal air pressure of the test box and the vibration generator is consistent, the test bench is prevented from deviating from the predetermined position, and the required test result can be obtained.

[0020] 2. The four-combined test system provided by the present application comprises a sealing structure, the sealing structure comprises a soft sealing element and a hard sealing element, the first mounting wall of the hard sealing element and the test box body are provided with the soft sealing element, and the three are connected through a fastener, and the second mounting wall of the hard sealing element and the vibration generation box body are provided with the soft sealing element, and the three are connected through the fastener. The four-combined test system has the following advantages: the sealing structure is arranged, so that sufficient rigidity and sufficient elasticity are ensured, and when the vibration generator has an amplitude, the vibration impact on the test box is reduced.

[0021] 3. The four-combined test system provided by the present application further comprises a water blocking structure, the water blocking structure comprises a first water blocking part and a second water blocking part, the test table is provided with the first water blocking part, the test box body is provided with the second water blocking part, and a gap exists between the first water blocking part and the second water blocking part, and the first water blocking part and the second water blocking part block each other. The four-combined test system of the structure can prevent the liquid generated by the environment adjusting structure from entering the moving coil assembly to protect the moving coil assembly when the gas pressure adjusting structure such as the vacuum pump assembly or the air compressor assembly adjusts the internal gas pressure and the gas can flow.

[0022] 4. The four-combined test system provided by the present application further comprises a base, the test box is arranged on the base, the vibration generating box body is arranged in the base, and a second air bag is arranged between the base and the vibration generating box body. The four-combined test system of the structure can reduce vibration and reduce the influence on the surrounding environment by arranging the second air bag.

[0023] 5. The four-combined test system provided by the present application further comprises an air inlet structure, the air inlet structure comprises an air inlet source, a first air inlet pipeline and a second air inlet pipeline, the air inlet source is connected to the first air bag through the first air inlet pipeline and connected to the second air bag through the second air inlet pipeline, and the first air inlet pipeline is provided with a first pressure reducing valve and a first reversing valve, and the second air inlet pipeline is provided with a second pressure reducing valve and a second reversing valve. The four-combined test system of the structure can realize the gas pressure adjustment of the first air bag and the second air bag through the same air inlet source, simplifies the system and saves the cost.

[0024] 6. The four-combined test system provided by the present application, wherein the test box body is arranged in a cylindrical shape. The four-combined test system of the structure can ensure that the test box body is uniformly stressed and avoid stress concentration by arranging the test box body in a cylindrical shape. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 The structure diagram of the four-combined test system provided in the embodiments of the present application;

[0027] Figure 2 The structure diagram of the four-combined test system provided in the embodiments of the present application; Figure 1A partial enlarged view of the sealing structure and the water blocking structure is shown.

[0028] Figure 3 As Figure 1 A structural schematic view of the hard sealing piece is shown.

[0029] Figure 4 As Figure 1 A gas path schematic view of the four-combined test system is shown.

[0030] Explanation of reference signs:

[0031] 11-test box, 12-first communication part, 13-cylindrical protruding part, 2-test table, 31-vibration generating box, 311-second communication part, 312-second mounting piece, 321-moving coil assembly, 322-first air bag, 323-housing piece, 324-guide piece, 325-first electric centering structure, 4-sealing structure, 41-soft sealing piece, 42-hard sealing piece, 5-water blocking structure, 51-first water blocking piece, 52-second water blocking piece, 6-base, 61-first mounting piece, 62-second air bag, 63-second electric centering structure, 71-air inlet source, 72-first pressure reducing valve, 73-first reversing valve, 74-second pressure reducing valve, 75-second reversing valve, 8-supporting structure, 91-environment adjusting structure, 92-gas pressure adjusting structure, 93-drainage structure, 100-controller. DETAILED DESCRIPTION

[0032] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Example

[0037] like Figures 1 to 4 The illustrated four-component integrated testing system includes a test chamber, a test bench 2, a vibration generator, a sealing structure 4, a water-blocking structure 5, a base 6, an air intake structure, a support structure 8, an environmental conditioning structure 91, an air pressure regulating structure 92, and a drainage structure 93. The support structure 8 includes a support frame, an air spring, and a guide bearing assembly. The air spring is sleeved on the guide bearing assembly. The guide bearing assembly is located between the test chamber and the support frame. The support frame is mounted on the base 6 to allow the test chamber to be positioned on the base 6. The environmental conditioning structure 91 is connected to the test chamber and is used to regulate the temperature and humidity inside the test chamber. Existing technologies can be used to regulate temperature and humidity. The air pressure regulating structure 92 can be a vacuum pump assembly or an air compressor assembly, used to regulate the air pressure inside the test chamber. The drainage structure 93 is connected to the test chamber.

[0038] like Figure 1 As shown, the test chamber includes a test chamber body 11, which has a first connecting portion 12. The test chamber body 11 is cylindrical and can be filled with insulation material. The bottom of the test chamber body 11 has a cylindrical protrusion 13 corresponding to the vibration generator. A test platform 2 passes through the first connecting portion 12, and there is a gap between the test platform 2 and the first connecting portion 12. The test platform 2 is used to place the test specimen. The cylindrical shape of the test chamber body 11 ensures that the test chamber body 11 is subjected to uniform force and avoids stress concentration. The cylindrical protrusion 13 reduces the flow rate of nearby gas and improves the sealing efficiency of the sealing structure 4.

[0039] like Figure 1 As shown, the vibration generator includes a vibration generating housing 31 and a vibration generating assembly. The vibration generating housing 31 has a second connecting portion 311, which is connected to the first connecting portion 12. The vibration generating housing 31 is located within a base 6, and a second airbag 62 is provided between the base 6 and the vibration generating housing 31. See details. Figure 1The base 6 is provided with a first mounting member 61, the vibration generating box body 31 is provided with a second mounting member 312, and the first mounting member 61 and the second mounting member 312 are provided with a second air bag 62. The first mounting member 61 and the vibration generating box body 31 are provided with a gap, and the second mounting member 312 and the base 6 are provided with a gap. By providing the second air bag 62, the vibration can be reduced, and the influence on the surrounding environment can be reduced.

[0040] As shown in Figure 1 , the vibration generating assembly includes a moving coil assembly 321, a first air bag 322, a magnet assembly, and a containing member 323. The test bench 2 is connected to the moving coil assembly 321, the moving coil assembly 321 is provided through the second communication part 311, and the moving coil assembly 321 and the second communication part 311 are provided with a gap; the first air bag 322 is connected to the moving coil assembly 321 through a guide member 324; the magnet assembly is arranged on the inner wall of the vibration generating box body 31, and the moving coil assembly 321 can move in the magnetic field to form vibration through the magnetic effect of the current; the containing member 323 is arranged in the vibration generating box body 31, the first air bag 322 is contained in the containing member 323, and the guide member 324 is provided through the containing member 323 to be connected to the moving coil assembly 321.

[0041] As shown in Figures 1 to 3 , the sealing structure 4 connects the test box body 11 and the vibration generating box body 31, and the sealing structure 4 has a third communication part, the third communication part, the first communication part 12, and the second communication part 311 are communicated and arranged. Referring to Figure 2 and Figure 3 , the sealing structure 4 includes a soft sealing member 41 and a hard sealing member 42, the first mounting wall of the hard sealing member 42 and the test box body 11 are provided with the soft sealing member 41, and the three are connected through fasteners such as screws, and the second mounting wall of the hard sealing member 42 and the vibration generating box body 31 are provided with the soft sealing member 41, and the three are connected through fasteners such as screws. The soft sealing member 41 can be a sealing washer or other, and the hard sealing member 42 can be an expansion joint or other. By providing the sealing structure 4, sufficient rigidity and sufficient elasticity can be ensured, and when the vibration generator has an amplitude, the vibration impact on the test box can be reduced.

[0042] As shown in Figure 1 and Figure 2As shown, the water blocking structure 5 includes a first water blocking part 51 and a second water blocking part 52, the test bench 2 is provided with the first water blocking part 51, the test box 11 is provided with the second water blocking part 52, and there is a gap between the first water blocking part 51 and the second water blocking part 52, and the first water blocking part 51 and the second water blocking part 52 block each other. The first water blocking part 51 and the second water blocking part 52 block each other, that is, the end of the first water blocking part 51 blocks the second water blocking part 52, and the end of the second water blocking part 52 blocks the first water blocking part 51. By providing the first water blocking part 51 and the second water blocking part 52, when the gas pressure adjusting structure 92 such as a vacuum pump assembly or an air compressor assembly adjusts the internal gas pressure, the liquid generated by the environmental adjusting structure 91 can also be prevented from entering the moving coil assembly 321 to protect the moving coil assembly 321.

[0043] The air inlet structure in the embodiment includes an air inlet source 71, a first air inlet pipeline, and a second air inlet pipeline. The air inlet source 71 is connected to the first air bag 322 through the first air inlet pipeline and connected to the second air bag 62 through the second air inlet pipeline. The first air inlet pipeline is provided with a first pressure reducing valve 72 and a first reversing valve 73, and the second air inlet pipeline is provided with a second pressure reducing valve 74 and a second reversing valve 75. The same air inlet source 71 can be used to adjust the gas pressure of the first air bag 322 and the second air bag 62, which simplifies the system and saves costs.

[0044] The first air bag 322 is correspondingly provided with a first electric centering structure 325, and the second air bag 62 is correspondingly provided with a second electric centering structure 63. The gas pressure of the first air bag 322 is adjusted by the first electric centering structure 325, and the gas pressure of the second air bag 62 is adjusted by the second electric centering structure 63. The first electric centering structure 325 includes a first sensor and a first sensing block, and the second electric centering structure 63 includes a second sensor and a second sensing block. The position can be determined by the cooperation of the corresponding sensors and sensing blocks to adjust the gas pressure of the corresponding air bag. It should be noted that the first electric centering structure 325, the second electric centering structure 63, and the air inlet source 71 are all connected to the controller 100.

[0045] The four-combination test system can be assembled and debugged under normal pressure conditions. The gas pressure of the first air bag 322 can be adjusted by the first electric centering structure 325 to make the test bench 2 located at a predetermined position, and the gas pressure of the second air bag 62 can be adjusted by the second electric centering structure 63 to make the second air bag 62 located at a predetermined position. When different test pieces are replaced, the gas pressure of the first air bag 322 can be adjusted according to the requirements to make the test bench 2 located at a predetermined position.

[0046] At normal pressure, the air pressure of the first air bag 322 and the second air bag 62 is a constant value, so the larger value of the two can be set as the pressure of the air inlet source 71, and the corresponding lower air pressure of the two is obtained by pressure reduction, so as to realize air pressure adjustment through the same air inlet source 71. Specifically, under different test air pressures, the relative values of the working air pressures of the first air bag 322 and the second air bag 62 are constantly changing, so the air source pressure of the air inlet source 71 is set as the theoretical maximum working pressure in both the first air bag 322 and the second air bag 62, and then the working pressures of the first air bag 322 and the second air bag 62 are adjusted through the first pressure reducing valve 72 and the second pressure reducing valve 74. Wherein when the required working pressure increases, the corresponding reversing valve can be adjusted.

[0047] The four-combination test system in the embodiment can realize the communication between the test box and the vibration generator inside, so as to ensure the consistency of the air pressure inside the test box and the vibration generator, avoid the deviation of the test table 2 from the predetermined position, and thus obtain the required test result.

[0048] Obviously, the above embodiments are only examples for clearly illustrating, but not limit the embodiments. For those skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, all the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A four-synthesis test system characterized by, The test box comprises a test box body provided with a first communication part; a test table arranged in the first communication part and having a gap with the first communication part, the test table being used for placing a test piece; a vibration generator comprising a vibration generator box body and a vibration generator assembly, the vibration generator box body being provided with a second communication part in communication with the first communication part; the vibration generator assembly comprising a moving coil assembly, the test table being connected to the moving coil assembly, the moving coil assembly being arranged in the second communication part and having a gap with the second communication part; the vibration generator assembly further comprises a first air bag connected to the moving coil assembly through a guide piece; the four-combination test system further comprises a base, the test box being arranged on the base, the vibration generator box body being arranged in the base and having a second air bag between the base and the vibration generator box body; the base is provided with a first mounting piece, the vibration generator box body is provided with a second mounting piece, and the second air bag is arranged between the first mounting piece and the second mounting piece. a sealing structure is further arranged, the sealing structure connecting the test box body and the vibration generator box body, the sealing structure having a third communication part in communication with the first communication part and the second communication part.

2. The four-combination test system according to claim 1, characterized in that the sealing structure comprises a soft sealing piece and a hard sealing piece, the soft sealing piece being arranged between a first mounting wall of the hard sealing piece and the test box body and connected to the three through fasteners, and the soft sealing piece being arranged between a second mounting wall of the hard sealing piece and the vibration generator box body and connected to the three through the fasteners.

3. A four-synoptic test system according to claim 2, wherein, a water blocking structure is further arranged, the water blocking structure comprising a first water blocking piece and a second water blocking piece, the test table being provided with the first water blocking piece, the test box body being provided with the second water blocking piece, a gap being arranged between the first water blocking piece and the second water blocking piece, and the first water blocking piece and the second water blocking piece blocking each other partially.

4. The four-synoptic test system according to any one of claims 1 to 3, characterized in that an air inlet structure is further arranged, the air inlet structure comprising an air inlet source, a first air inlet pipeline and a second air inlet pipeline, the air inlet source being connected to the first air bag through the first air inlet pipeline and to the second air bag through the second air inlet pipeline, the first air inlet pipeline being provided with a first pressure reducing valve and a first reversing valve, and the second air inlet pipeline being provided with a second pressure reducing valve and a second reversing valve.

5. The four-combination test system of claim 1, wherein the first air bag is correspondingly provided with a first electric centering structure, the second air bag is correspondingly provided with a second electric centering structure, the air pressure of the first air bag is adjusted through the first electric centering structure, and the air pressure of the second air bag is adjusted through the second electric centering structure.

6. The four-combination test system of claim 1, wherein the test box body is arranged in a cylindrical shape.

7. A four-synthesis test system according to any one of claims 1 to 3, wherein ​

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