Device for combined testing

 

(57) Abstract:

Use: the invention relates to testing of electronic equipment (REE), components of its components (ERIE), and other objects on the effects of mechanical and environmental factors. The essence of the invention lies in the fact that the table of the vibration exciter 1 is mounted a cylindrical adapter 2, the upper end of which is fastened experience (OE) REA (ERIE) 3, and the circumference of the side surface of the adapter is the rubber diaphragm 4, which is made in the form of a ring and its outer circumference is fixed to the hole of the stationary cylindrical chamber 5 located in its lower part, and in the upper part of the cylindrical chamber has an opening that can be aligned with the openings of the heat chamber 6 low temperature heat chamber 7 high temperature transfer mechanism, in which through flexible hoses are brought low and high temperature. The transfer mechanism made in the form of segmental construction. On its outer surface cut teeth that engages with the wheel mounted on the shaft of a reversible motor, in which there is a change cameras on the STV will improve the efficiency of trials of CEA and ERIE on the resistance to mechanical and climatic factors. 3 Il.

The invention relates to testing of electronic equipment (REE), components of its components (ERIE), and other objects on the effects of mechanical and environmental factors.

To assess persistence REA and ERIE to mechanical and climatic factors carry out the appropriate tests, regulated domestic, foreign and international standards, special test equipment (IO) [1,2].

One of the most hard types of tests CEA, and ERIE are tested for vibration and thermal shock, which are held separately on a special IO [3].

At the bottom of the device for testing products on heat stroke is a low temperature heat chamber (TNT), in the upper part of the heat chamber high temperature (TW), and in the middle part - cylindrical chamber with an opening for the test samples. This camera is provided by the test area, in which are placed the samples.

By turning the cylindrical chamber (test area does not rotate) and dense agree its aperture with the apertures TNT and TW, respectively, obtained low-temperature and viscotester the high temperature.

In terms of aircraft (mostly aircraft), these effects on CEA and ERIE operate simultaneously (fast climbing aircraft or rapid decline), which in some cases leads to their failure.

So now becomes important to model this type of combined effects in laboratory conditions.

The aim of the invention is to increase the efficiency of testing by ensuring that the combined effect of vibration and thermal shock, which allows a user to zoom in test mode to real operating conditions, and to identify potentially unreliable nodes of the object. For this to the table vibrator is mounted a cylindrical adapter on the upper end of which is fastened experience(OE) REA (ERIE), and the circumference of the side surface of the adapter is a rubber diaphragm, which is made in the form of a ring and its outer circumference is fixed to the hole of the stationary cylindrical chamber located in its lower part, and in the upper part of the cylindrical chamber is made of an aperture that can be aligned with the openings of the chambers, in which the through flexible hoses are fed high and low temperature. the which engages with the wheel, mounted on the shaft of a reversible motor, in which there is a change of TNT and TW over the openings of the cylindrical chamber, and therefore, the temperature change in her.

In Fig. 1 shows the proposed device and the structural arrangement of its mechanisms, General view; Fig.2), the same cross-section along the axis of the vibrator of Fig.3 is a section along a vertical plane.

The device comprises a vibration exciter 1 pinned on his Desk cylindrical adapter 2, the upper end of which is attached test item 3 (REA or ERIE). The circumference of the side surface of the adapter 2 is rubber sealed aperture 4, which is made in the form of a ring and is attached to its external circumference to the hole of the cylindrical chamber 5 located in its lower part. Aperture 4 acts as a heat insulator. The space inside the chamber 5 is the test zone.

In the upper part of the chamber 5 has an opening that is designed for tight coordination with the openings of the chamber 6 and the chamber 7. The camera 5 is rigidly connected with the base 8 of the device. Camera 6 and 7 are fixed to the moving mechanism 9, which is mounted on the upper surface of the base 8 with the possibility of prostroke.

In one of the walls of the chambers 6 and 7 and the adjacent side surface of the mobile mechanism 9 is made of the total hole to which on the outer side of the mobile mechanism 9 is connected insulated flexible hoses 12. Through the hose 12 into the chambers 6 and 7 serves cold and hot air.

On the upper surface of the movable mechanism 9 cut teeth that engages with the wheel 14 fixed on the shaft of the reversible motor 15, rigidly connected with the farm 16 installed on the basis of laboratory premises, where a test is performed (in the drawing the location of the farm 16 on the basis of premises not shown).

To the side surface of the camera 5 and the base 8 is attached arc plate 17 so that when moving mobile mechanism 9 openings TNT 6 and TW 7 tightly aligned with their outer surfaces in order to ensure thermal insulation (remote control compartment and switchboard on figures not shown).

The proposed device operates as follows.

Before starting the test run the engine 15 as long as the mechanism 9 will not occupy a position that allows the operator to have easy access to the adapter 2 to install the Oia openings camera 5 and 6.

In chambers 6 and 7 from the cooling and heating devices through the hose 12 is supplied with hot and cold air and set the temperature depending on the degree of hardness tests. Product 3 is kept in the chamber 6 during the time required to reach thermal equilibrium.

Starts up the vibration exciter and simultaneously started the engine 15 as long as the mechanism 9 will not occupy a position in which the openings of the chambers 7 and 5 will be tightly coordinated. The vibration exciter 1 is turned off, and the product 3 is maintained in the chamber 7 during the time required to achieve thermal equilibrium (tests can be built so that the product 3 within the specified time will be first subjected to the combined effect of vibration and low temperature, when the product of thermal shock vibration exciter 1 is turned off, and then a test is performed on the combined effect of vibration and high temperature).

Similarly, the device will work when the work operations, following the reverse sequence. The number of test cycles is set in the normative-technical documentation on the test item 3.

DEVICE FOR COMBINED TESTING of OBJECTS containing the base, set the camera tool temperature changes, vibration exciter associated with camera by means of a sealed diaphragm, characterized in that it has established on the basis of additional Luggage together with the temperature changes and the mechanism for moving the Cam drive motor gear, a base and a camera made in the form of the mating segment designs, camera mounted for movement along the base and fixing their relatively tight aperture, with each chamber is communicated with the corresponding means of temperature changes through flexible hoses.

 

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