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08/05/2020 4:21 am
Does anyone know why the criteria for spring buffers for traction elevators has a different acceptable range than spring buffers for hydraulic elevators?
Traction require 3x the gross load to compress solid, and a minimum of 2x; where hydraulic buffers max load rating is 2x the gross load to compress and minimum of 1x.
Rack and pinion devices also utilize the traction criteria for spring buffers.
Traction require 3x the gross load to compress solid, and a minimum of 2x; where hydraulic buffers max load rating is 2x the gross load to compress and minimum of 1x.
Rack and pinion devices also utilize the traction criteria for spring buffers.
09/05/2020 5:37 am
A17.1-2016-8.2.3.2, gives the formula for spring buffers. I would guess the difference between the safety plank construction, and the construction of the bolster channel may have somehing to do with the different critera.