SU124545A1 - Device for automatic testing of electrical apparatus according to a predetermined program - Google Patents

Description

The proposed device for automatic testing of electrical apparatuses according to a predetermined program differs from the known ones in that it simultaneously names three time sensors, a step distributor and a switch. Such an implementation provides the possibility of complex verification of electrical devices.

The drawing shows a schematic diagram of the proposed device, which contains three time sensors Dj Do and Dz - a step-up distributor SR and a switch / C with switching animatura.

The time sensors allow the implementation of a smooth and independent control of the on-delay times, the duration of the pauses between the inclusions and the long-term cooling period that follows a certain number of cycles, which is the maximum operating mode of the test product. The sensors receive rotation from the synchronous motor of the SD through the reducer P electromagnetic EM couplings and alternately at time intervals set on the Hx, send a signal to the activation of the stepper distributor.

Stepper valve SR has an electromagnetic clutch EL. triggered by signals from sensors and an interlocking synchronous electric motor SDU. with ratchet X.

Switch K has a brush W, driven by the -j.ieK motor SD1 and sliding as it moves along its lamella. -2 The same relay circuit ensures that the corresponding time sensors are disconnected in accordance with the test program.

The jBj microswitch is also used in the schagovy distributor, which disconnects the EM coupling and stops the yoke in the initial position. This is achieved by repeating the 1e of the prescribed pattern 1 of the test of the expiration of the deadline.

No. 124545-2 -

The switch has a series of concentric brass rings that are connected using contact screws with radial lamellae. It allows you to set any sequence of switching on the products with the interval between the end of work of one product and the start of work of the other with the correct arrangement of the contact screws on the switch rings, as well as fix the required number of cycles in accordance with the mode of operation of the product.

To test products that have their own disconnecting setups, a RT current relay is used, which, in conjunction with time sensors and a step generator, creates the necessary test program.

In addition, the device uses: pulse counter C, a group of intermediate relays, a stopwatch, recording the total operating time of the mechanisms, a number of electrical measuring instruments and signal lamps.

In order to automate power supply automation, the electrical circuit of the apparatus also allows the following tasks to be performed: a) reverse the electric motors; b) switch auxiliary masks used to load the motor under test by current; c) issue a command for transferring the load on the test bench for mechanisms with translational motion; d) give the command to change the sign of the moment load when testing mechanisms with rotational movement of the output shaft.

Subject invention

A device for automatic testing of electrical apparatus according to a predetermined program, which is based on the fact that, in order to ensure the possibility of carrying out a comprehensive test, it contains: a) three time sensors that receive rotation from a common synchronous motor through electromagnetic the clutch and control the duration of the periods of inclusion of the test apparatus, the pauses between these inclusions and periods of prolonged cooling; b) a stepper distributor with an electromagnetic clutch operating from signals from the specified time sensors and connecting a synchronous electric motor with a ratchet, using a microswitch and a relay circuit, to disconnect the corresponding time sensors; c) a commutator, playing a brush, rotated from the same electric motor, intended to switch on the test objects by reference.