New technology of automatic rope tension adjustment device!
Donam Engineering helps you to move up to better elevator environment!
According to EN 81-1 (clause 9.1.3) it is mandatory to have at least 2 suspension ropes on a traction lift. Usually 4 to 12 ropes are employed, which are run over the same traction sheave and divertors. EN81-1 (clause 9.5.1) calls for an automatic device to equalize rope tension, at least at one of their ends. In the vast majority of cases, this is achieved by springs as detailed in EN81-1 (clause 9.5.2). The tendency in design of lifts is increasingly moving away from a few thick ropes with big traction sheaves in a 1:1 suspension configuration, towards many thinner ropes in 2:1 suspension configuration on small traction sheaves; mainly due to space and cost restrictions.