Analysis on the influence of elevator buffer clearance on elevator safety

Currently, a large number of elevator manufacturers do not consider the actual impact speed during the selection of buffers or the calculation of guided travel, which creates safety risks. By analyzing relevant standard situations, this article establishes equations to calculate the impact speed of the elevator car or counterweight, determines the corresponding results, and carries out relevant test verifications. Moreover, the influences of buffer clearance on elevator safety are analyzed. Finally, the paper proposes new rules for buffer selection and a new method for calculating the maximum buffer clearance between the buffer and car (or counterweight), which will improve the safety of elevators in actual applications