RU1800410C - Loading device for testing energized electric motor - Google Patents

Abstract

Usage: reliability test of bearing assemblies and motor windings. SUMMARY OF THE INVENTION: a bed for mounting a test engine in it, with a movable support, a sleeve with a disk in which the motor shaft is fixed, a load bearing mounted on the sleeve, a spring clip mounted on the bed and abutting the other end against the load bearing - a wife, a load fan, the shaft of which is mounted in a bearing mounted on a movable support, and a wheel mounted on the fan shaft and supported on the side surface of the disk. 1 ill.

Description

The invention relates to test equipment and can be used for testing reliability of low power asynchronous motors.

The purpose of the invention is to expand operational capabilities by conducting both separate and joint tests of the winding and bearing assembly.

The drawing shows a load device for testing a connected electric motor.

The loading device comprises a frame 1, on which the test motor 2 is mounted, a sleeve 4 mounted on the output end of the shaft 3 of the electric motor, a sleeve 5 with a disk 5 rigidly connected thereto, a load bearing 6 mounted on the sleeve, the outer ring of which has a clamp 7, which consists of a glass 8, supported by a spring 9 inserted into the sleeve 10, drawn by a nut 11. The clamp is assembled on an axis 12 and fixed to

a glass. On the racks 13, grooves 14 are made, in which the movable support 16 is fixed using bolted joints 15. A wheel 19 and a load fan 20 are mounted on it with a bearing 17 on the shaft 18. Weights 21 are installed in the holes in the disk.

The device operates as follows.

The test motor 2 is mounted on the bed 1. At the output end of the shaft 3, a sleeve 4 with a disk 5 is mounted. A load bearing 6 is mounted on the sleeve, to which the clamp 7 is connected and fixed on the bed 7. Using the nut 11, the required load on the bearing assembly of the test person is installed electric motor.

A movable support 16 with a load fan 20. a bearing 17 and a wheel 19, which are assembled on the shaft 18 using bolted joints 15.

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mounted on the uprights 13 so that the wheel 19 is in close contact with the disk 5. Weights 21 are mounted in the holes in the disk.

The test motor is connected to the network, the fan 20 is rotated, providing a load on the winding.

For ease of adjustment, the disk is equipped with a graduated scale in the form of concentric circular lines, each of which corresponds to a certain frequency of rotation of the load fan, and therefore to a certain load on the winding of the tested electric motor.

The static load on the bearing assembly is created by the action of the clamp 7 on the load bearing 6, and through it on the bearing assembly of the electric motor. The force of action of the clamp is regulated with a spring 9, which is pressed by the nut 11, and the scale applied on the cup 8, shows the magnitude of the load.

The vibrational load on the test electric motor is created by fixing the weights 21 in the holes on the disk 5.

The application of the proposed load device makes it possible:

widespread loads on the winding and bearing assembly of the electric motor during accelerated reliability tests;

conducting both separate and joint accelerated tests for reliability of the winding and bearing assembly of the electric motor;

determining the magnitude of the loads separately on the winding and on the bearing assembly of the test motor.

Claims (1)

The claims A load device for testing a connected electric motor, comprising a load fan and an associated sleeve for mounting on a motor shaft, characterized in that, in order to expand operational capabilities by conducting both separate and joint tests of the winding and bearing assembly, it contains a frame in which the test motor is mounted, a disk rigidly connected to the sleeve, a load bearing in which the sleeve is mounted, an adjustable spring a clamp, one end of which is supported by a load bearing and the other end is mounted on a bed, a wheel mounted on one shaft with a fan and supported on the side surface of the disk, the fan shaft being mounted in a bearing mounted on a movable support that is mounted on the bed with the possibility of axial movement of the wheel.