Testing machine for testing variable load reducer for washing machines

Abstract

The invention relates to a testing machine for testing a variable load reducer for washing machines. The testing machine comprises a servo motor. The servo motor is connected with a reducer under test, through a shaft sleeve. The reducer under test is clamped with an adjustable clamp which is positioned via a guide rail; a pneumatic cylinder is connected with the shaft sleeve through a connecting line and loads the reducer under test; the connecting line is supported by a pulley; an air pipe is mounted on the pneumatic cylinder; the guide rail and the pulley are directly mounted on a base; the servo motor and the pneumatic cylinder are fixed on the base through a rib plate. The pneumatic cylinder loads the reducer, low heat is generated, and loading performance is stable; different loads can be acquired by adjusting a pneumatic valve through an industrial personal computer according to the load of the reducer for washing machines.

Description

technical field [0001] The invention relates to a test device for a variable load washing machine speed reducer. Background technique [0002] The washing machine speed reducer is the core component of the washing machine, and it is very important to experiment with it. The usual test method is that the output end of the reducer to be tested is connected coaxially with the loading mechanism, the input end is connected coaxially with the input shaft of the servo motor through an angle encoder and other equipment, and the angle encoder is installed on a connection with the output shaft of the servo motor Therefore, the connecting shaft will inevitably be affected by the rotational torque transmitted by the servo motor, which will generate errors caused by the torque deformation of the connecting shaft itself, thereby reducing the measurement accuracy of the angle encoder. In addition, the usual test method uses a magnetic powder brake to achieve loading, which has a simple st...

AI Technical Summary

Problems solved by technology

The usual test method is that the output end of the reducer to be tested is connected coaxially with the loading mechanism, the input end is connected coaxially with the input shaft of the servo motor through an angle encoder and other equipment, and the angle encoder is installed on a connection with the output shaft of the servo motor Therefore, the connecting shaft will inevitably be affected by the rotational torque transmitted by the servo motor, which will produce errors caused by the torque deformation of the connecting shaft itself, thereby reducing the measurement accuracy of the angle encoder

In addition, the usual test method uses a magnetic powder brake to achieve loading, which has a simple structure and is convenient to control, but it has the defects of large volume, serious heat generation, and poor stability of loading performance.

And once the load is determined, the load cannot be adjusted arbitrarily during the test, which limits the test performance of the reducer to a large extent

Images