A three-combined vibration environmental test chamber

Abstract

The present application relates to the technical field of test equipment, in particular to a three-comprehensive vibration environment test box, which comprises a box body and a connecting frame, one side of the box body is provided with a test station area for placing test pieces to carry out multi-environment simulation test, a connecting frame is arranged in the test station area, a multi-directional movable connecting plate is arranged in the middle of the connecting frame, and an inflatable part is tightly connected between the connecting frame and the connecting plate. By arranging the annular inflatable part on both sides of the connecting frame for providing vibration effect, when the connecting frame moves horizontally or vertically, the inflatable part will expand and abut against one side of the connecting frame, thereby increasing the friction between the inflatable part and the connecting frame, reducing the shock feeling and providing certain noise reduction effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of test equipment, in particular to a three-combination vibration environment test box. BACKGROUND

[0002] The three-combination test box combines temperature, humidity and vibration functions in one, and is suitable for testing various performance indicators of aerospace products, information electronic instruments, materials, electrical products, and various electronic components in a comprehensive harsh environment.

[0003] At present, the three-combination vibration environment test box needs to provide external force continuously in actual use, so that the part for carrying the device to be tested can simulate the vibration effect. Usually, a knocking hammer is used to continuously strike. Even if the entire placement area is set in the box body, and a certain sound-absorbing structure is set on the box door and the outer shell, the dull knocking noise still occurs. Moreover, long-term knocking also causes equipment wear and tear, increasing the test cost.

[0004] Therefore, a three-combination vibration environment test box is proposed to solve the above problems. SUMMARY

[0005] Technical problems to be solved

[0006] In view of the above shortcomings of the prior art, the present application provides a three-combination vibration environment test box, which can effectively solve the problem of excessive noise during simulation of vibration environment in the use of the test box.

[0007] Technical scheme

[0008] To achieve the above purpose, the present application is realized by the following technical scheme:

[0009] The present application provides a three-combination vibration environment test box, which comprises a box body and a connecting frame. One side of the box body is provided with a test station area for placing the test piece for multi-environment simulation test. A connecting frame is arranged in the test station area. A multi-directional movable connecting plate is arranged in the middle of the connecting frame. An inflatable part is tightly connected between the connecting frame and the connecting plate. The inflatable part is provided with at least two expansion points, which are respectively located at the side end and the upper end of the connecting plate. One of the expansion points can be tightly attached to the end face of the connecting plate during displacement of the connecting plate. The inflatable part is enclosed outside the connecting plate and always attached to the side wall of the connecting plate.

[0010] Further, the box body comprises a force applying part, which is installed on one side of the connecting frame and is provided with at least two mutually perpendicular contact points. The two perpendicular contact points are respectively arranged on the vertical sides of the connecting frame and intermittently strike the side end of the connecting frame.

[0011] Further, the contact is frustoconical, and the diameter of one end of the contact is smaller than the diameter of the other end, the connecting plate is provided with a frustoconical alignment hole corresponding to the direction of each contact, and the extension line of the side of the cross section of the contact intersects with the extension line of the side of the cross section of the alignment hole.

[0012] Further, the ratio of the diameter of the side of the alignment hole corresponding to the side of the contact to the diameter of the end of the contact is at least 1:2.

[0013] Further, the connecting plate comprises a shell and a movable plate, the contact is mounted at the side end of the shell, the shell is hollow inside, and the inside is provided with a movable plate which can be guided reciprocally, wherein a resilient member is mounted between the movable plate and the shell.

[0014] Further, the resilient member comprises a reset spring arranged between the shell and the movable plate, a slide rod is inserted in the shell along the transverse displacement direction of the connecting plate, the movable plate slides on the slide rod, and a reset spring is sleeved on the slide rod on both sides of the movable plate.

[0015] Further, the inflatable member is filled with gas, the middle part is pressed into an L shape by a sealing strip arranged on the connecting frame, and the concave surface faces the connecting plate.

[0016] Further, the shell further comprises a contact bar, the contact bar is mounted at the side end of the shell, and is always located below the inflatable member, one end of the contact bar is opposite to the inflatable member, and the contact bar is arranged in an arc shape.

[0017] Beneficial effects

[0018] Compared with the known prior art, the technical scheme provided by the application has the following beneficial effects:

[0019] By arranging the annular inflatable member on both sides of the connecting frame for providing vibration effect, when the connecting frame moves transversely or longitudinally, the inflatable member is inflated and abuts against one side of the connecting frame, the friction between the inflatable member and the connecting frame is increased, the shock feeling is reduced, and a certain noise reduction effect is provided, and the frustoconical design of the contact and the alignment hole enables the contact to contact the connecting plate with a relatively slow force, so that a large impact noise is not caused. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 It is the whole structure schematic diagram in the embodiment of the present application.

[0022] Figure 2 It is the exploded structure schematic diagram of the connecting frame in the embodiment of the present application.

[0023] Figure 3 It is the exploded structure schematic diagram of the connecting plate in the embodiment of the present application.

[0024] Figure 4 It is the longitudinal direction vibration view angle partial section structure schematic diagram of the connecting plate in the embodiment of the present application.

[0025] Figure 5 It is the longitudinal direction vibration view angle front view structure schematic diagram of the connecting plate in the embodiment of the present application.

[0026] Figure 6 It is the transverse direction vibration view angle partial section structure schematic diagram of the connecting plate in the embodiment of the present application.

[0027] Figure 7 It is the transverse direction vibration view angle front view structure schematic diagram of the connecting plate in the embodiment of the present application.

[0028] Figure 8 It is the sealing structure schematic diagram between the connecting frame and the box in the embodiment of the present application.

[0029] The numbers in the figure respectively represent: 1, the box; 11, the test work station area; 12, the cavity; 2, the connecting frame; 21, the connecting plate; 211, the alignment hole; 212, the reset spring; 213, the sliding rod; 214, the outer shell; 215, the movable plate; 22, the inflation member; 23, the force applying member; 231, the contact; 232, the connecting arm; 3, the polyester ammonia heat preservation layer; 4, the glass silk cloth heat breaking plate; 5, the sealing strip; 6, the glass wool; 7, the carbon fiber cloth. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiment of the present application more clear, the technical scheme in the embodiment of the present application will be described clearly and completely below in combination with the drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all the embodiment. Based on the embodiment in the present application, all the other embodiments obtained by the person skilled in the art without making the creative labor, belong to the protection scope of the present application.

[0031] The present application will be further described below in combination with the embodiment.

[0032] Embodiment:

[0033] Reference Figures 1-8The test box outer structure in the example is sprayed with cold-rolled steel plate, the inner structure is SUS304 stainless steel plate, and the PU foaming and ultra-fine centrifugal glass wool composite insulation layer is used between the box 1 and the cabin hole as the insulation structure during the high and low temperature test.

[0034] A three-combination vibration environment test box, comprising a box 1 and a connecting frame 2, one side of the box 1 is provided with a test station area 11 for placing the test piece for multi-environment simulation test, and the other side is provided with a simulation test machine box, a motion connection system, a control system, a refrigeration and dehumidification system and a heating and humidifying system for providing different temperature and humidity and vibration environment simulation for the test station area 11.

[0035] The connecting frame 2 is provided in the test station area 11 and is in a rectangular shape, a cavity 12 is provided in the middle part, a connecting plate 21 is provided in the cavity 12 and can reciprocate along the upper end of the cavity 12 and the transverse direction, the sample device to be tested is placed in the middle part of the connecting plate 21, the connecting plate 21 is provided with a motion connection system at the bottom end, a certain external force (pushing force or knocking force) is provided to the connecting plate 21, the connecting plate 21 can move in the cavity 12, thereby simulating the vibration environment, and the cold and hot environment and humidity environment in the box 1 are combined, the adaptability of the device to the temperature and humidity and vibration combined environment change during transportation and actual use under different environments can be observed, and the defects of the product can be exposed.

[0036] Specifically, an opening 111 is provided at the front end of the box 1 for the connecting frame 2 to extend into, a polyester ammonia insulation layer 3 and a ten-millimeter glass silk cloth heat break plate 4 are provided on the inner wall of the extending position from one side of the opening to the other side direction, and a sealing strip 5 is filled between the polyester ammonia insulation layer 3 and the glass silk cloth heat break plate 4, and the other side of the glass silk cloth heat break plate 4 is provided with glass wool 6, and the carbon fiber cloth 7 is attached beside the glass wool 6, thereby providing a good insulation and sealing structure.

[0037] And the connecting frame 2 and the connecting plate 21 between the tight connection has a gas-filled member 22, gas-filled member 22 inside filled with gas, gas-filled member 22 as a whole is annular, and wrapped in the connecting plate 21 at the periphery, through the connecting frame 2 on the setting of the seal 222 will be gas-filled member 22 L type (cross section) and its concave towards the connecting plate 21 direction setting, so that the gas-filled member 22 has two expansion points, respectively, in the side end and the upper end of the connecting plate 21, when the connecting plate 21 up, will resist the expansion point in the upper end, gas to the side end direction, the side end of the expansion point begins to expand, volume increases, increase the connecting plate 21 contact to the upper end, the side end and the gas-filled member 22 between the friction and play a role in the sound of one of the expansion points can be in the connecting plate 21 when the displacement of the end surface of the connecting plate 21, similarly, when the horizontal direction moves, the upper end of the contact point to the downward expansion, increase the connecting plate 21 upper end and the gas-filled member 22 between the friction, wherein, the gas-filled member 22 enclosed in the connecting plate 21 outside, and always with the connecting plate 21 side wall.

[0038] Gas-filled member 22 in addition to the role of shock absorption and sound reduction, but also increase the sealing performance between the inside and outside of the connecting plate 21, the moisture is difficult to enter below the connecting plate 21, the internal elements caused by rust and difficult to clean.

[0039] And the motion connecting system in this case is to apply external force to the connecting plate 21, that is, the force applying member 23, the force applying member 23 includes two parts of transverse force and longitudinal force, which are installed at the side end of the connecting frame 2, and the contacts located in the vertical side and the axial side are perpendicular to each other. Specifically, a movable two mutually perpendicular contact 231 is arranged at the lower end of the connecting plate 21, and the two perpendicular contacts 231 are arranged on the vertical side of the connecting frame 2 and intermittently knock the side end of the connecting frame 2.

[0040] Specifically, the connecting plate 21 is composed of a shell 214 and a movable plate 215, the contact 231 is arranged at the side end of the shell 214, the shell 214 is hollow inside, and the movable plate 215 slides in the shell 214. The elastic member includes a return spring 212 arranged between the shell 214 and the movable plate 215, a slide rod 213 inserted into the shell 214 along the transverse displacement direction of the connecting plate 21, and the movable plate 215 slides on the slide rod 213. A return spring 212 is arranged on the slide rod 213 and located on both sides of the movable plate 215.

[0041] And the contact 231 in this case is a circular truncated cone, supported by a transversely movable connecting arm 232, the connecting arm 232 is provided with two blocks, arranged on both sides of the movable plate 215, and each connecting arm 232 is provided with two contacts 231 symmetrically arranged thereon. The longitudinal direction contact 231 is provided with four, which are arranged in a rectangular shape and supported by a I-shaped connecting arm 232.

[0042] The diameter of the end of the contact 231 facing the adjacent movable plate 215 is smaller than the diameter of the other end, and the movable plate 215 is provided with a circular-tapered alignment hole 211 at the position corresponding to the direction of each contact 231, and the side extension line of the cross section of the contact 231 intersects with the side extension line of the cross section of the alignment hole 211.

[0043] When the contact 231 is inserted into the alignment hole 211, the contact force gradually increases, and the contact 231 moves into the alignment hole 211 in a slow manner.

[0044] The driving mode of the connecting arm 232 in the example is a known technology, and a push rod or other moving structure can be used as a substitute. When the connecting arm 232 in one direction (the two connecting arms 232 in the transverse direction are driven by the same driving mechanism by default) moves, the connecting arm 232 in the other direction does not move, and the contact 231 and the alignment hole 211 are not in contact. The diameter of the side of the alignment hole 211 opposite to the contact 231 is at least 1:2 compared with the diameter of the corresponding end surface of the contact 231, so as not to affect the movement in the other direction.

[0045] When the movable plate 215 is subjected to the force of the contact 231, the movable plate 215 reciprocally moves in the shell 214. When subjected to the axial force, the movable plate 215 elastically reciprocally moves in the shell 214, so that the connecting plate 21 as a whole is subjected to the force, thereby achieving the transverse vibration effect. When subjected to the longitudinal force, the connecting plate 21 moves up and down (at this time, the contact 231 moves in the alignment hole 211 to a certain extent in the longitudinal direction), thereby achieving the longitudinal vibration effect.

[0046] The shell 214 is respectively provided with a contact resistance strip 216 at the side end, and the contact resistance strip 216 is always located below the inflatable member 22, and one end of the contact resistance strip 216 is opposite to the inflatable member 22 and is provided with an arc surface, so that the force receiving parts between the shell 214 and the inflatable member 22 are respectively the top end of the arc surface and the upper part.

[0047] The above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features. Such modifications or replacements do not change the essence of the corresponding technical solutions, and do not deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A three-integrated vibration environment test chamber, characterized in that: include: A box body, one side of which is provided with a test station area for placing the test piece to be tested for multi-environment simulation test; A connecting frame is provided in the test station area. The connecting frame is rectangular in shape and has a cavity in the middle. A connecting plate is provided in the cavity and can be moved back and forth along the upper end of the cavity and in the transverse direction. An inflatable member is tightly connected between the connecting frame and the connecting plate. The inflatable member is enclosed on the outside of the connecting plate and is always in contact with the side wall of the connecting plate. The inflatable member is tightened into an L-shape by a seal provided on the connecting frame, and its concave surface is arranged toward the connecting plate, so that the inflatable member has two expansion points, respectively located at the side end and the upper end of the connecting plate. One of the expansion points can be in contact with the end surface of the connecting plate when the connecting plate is displaced. The box includes: A force applying member, the force applying member being mounted on one side of the connecting frame and having at least two mutually perpendicular contact points, the two perpendicular contact points being respectively located on the vertical sides of the connecting frame and intermittently striking the side end of the connecting frame; The contact is truncated cone-shaped, and the diameter of one end toward the adjacent connecting plate is smaller than the diameter of the other end. A truncated cone-shaped alignment hole is provided on the connecting plate at the direction corresponding to each contact, and the side extension line of the contact cross section intersects with the side extension line of the alignment hole cross section.

2. A three-comprehensive vibration environment test box according to claim 1, characterized in that: The ratio of the diameter of the side of the alignment hole facing the contact to the diameter of the corresponding end face of the contact is at least 1:

2.

3. The three-comprehensive vibration environment test box according to claim 1, characterized in that: The connecting plate comprises: a housing, wherein the contacts are mounted on a side end of the housing; The movable plate is hollow inside the shell, and a movable plate capable of reciprocating movement is provided inside the shell; Wherein, an elastic member is installed between the movable plate and the shell.

4. A three-comprehensive vibration environment test box according to claim 3, characterized in that: The elastic member includes a return spring arranged between the shell and the movable plate, a sliding rod is inserted in the shell along the lateral displacement direction of the connecting plate, the movable plate slides on the sliding rod, and a return spring is respectively sleeved on the sliding rod and located on both sides of the movable plate.

5. The three-comprehensive vibration environment test box according to claim 1, characterized in that: The inflatable piece is filled with gas, and the inflatable piece is tightened into an L-shape at its center by a sealing strip arranged on the connecting frame, and the concave surface of the inflatable piece is arranged toward the connecting plate.

6. The three-comprehensive vibration environment test box according to claim 4, characterized in that: The housing also includes: The interference strip is installed at the side end of the shell and is always located below the inflatable component. One end of the interference strip is directly opposite to the inflatable component and is arranged in an arc surface.

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