An Emergency Stop Device for a Super High Speed Elevator(810m/min)(Development of Braking Materials).

Abstract

A braking material for an emergency stop device for a super high speed elevator (810 m/min)was developed. The material is a special cast iron containing Cr, Ni and P. Its structure is a pearlitic matrix of flaky graphite, steadite and cementite, and its wear resistance is about lO times that of FC250. Its coefficient of friction is about 1. 5 times that of FC250. A new emergency stop device made of the material was proven to conform to Japanese standards and ANSI (American National Standards Institute) standards for stopping-distance and car inclination criteria in tests conducted by dropping actual-scale equipment.