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#29246 - 05/07/20 08:21 PM 2.22.3.2.1 spring buffers vs 3.22.1.2.1  
Joined: Apr 2016
Posts: 1
YYZConsult Offline
stranger
YYZConsult  Offline
stranger

Joined: Apr 2016
Posts: 1
Ontario
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.

#29257 - 05/08/20 09:37 PM Re: 2.22.3.2.1 spring buffers vs 3.22.1.2.1 [Re: YYZConsult]  
Joined: Feb 2013
Posts: 586
john jay Offline
addict
john jay  Offline
addict

Joined: Feb 2013
Posts: 586
ohio
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.


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