Door and window pulley service life testing device

The invention provides a door and window pulley service life testing device, and relates to the field of door and window pulleys, the door and window pulley service life testing device comprises a testing assembly, the testing assembly is composed of a push-and-pull mechanism and a control mechanism, and when the pulley is slightly damaged to cause door and window push-and-pull retardation, the push-and-pull force is greater than the set force; the test assembly can automatically cut off the power supply of the electric push rod so as to terminate the test process, can accurately test the movement times of the to-be-tested door and window at the initial stage of the damage of the pulley, can freely regulate and control the set limiting force, and can test the times required by the pulley to reach different damage degrees. The problems that according to an existing door and window pulley service life testing device, due to the fact that the driving force of an electric push rod is large, even if the sliding wh