PARAMETERS OF CONTACT-FORCE INTERACTION BETWEEN ELEMENTS OF THE PROGRESSIVE SAFETY GEAR DURING AN EMERGENCY BRAKING STOP
The paper describes the design and operating principle of the elevator safety unit - a by-directional progressive safety gear of the roller type. The parameters of the force interaction between the working elements to ensure smooth braking of the elevator cab depending on the direction of movement during an emergency stop (due to the actuation of the progressive safety gear) have been determined. The calculation of force magnitudes is presented based on the experimentally obtained values of friction coefficients arising on the working elements of the progressive safety gear.