Re: Question Concerning Feeder Adapter Loads
They may design based on the nominal live and dead load of the feeder, without concern to the storage facility.
Regards,
Lyle ■
Re: Question Concerning Feeder Adapter Loads
Haven't done much with stockpiles myself, but might have thought that the feeder under it would be much the same as a feeder under a core flow bin.
There are established methods to estimate the down load on feeders under bins so would expect to be able to use these for this application. Certainly the downloads are not usually considered to be hydrostatic but increase with depth to a limiting value so the manufacturer may have established a limiting value and sized the cables accordingly. ■
Question concerning feeder adapter loads
I frequently design vibratory feeder adapters, or hoppers, for the crushed stone industry. These feeders are placed beneath stockpiles of stone and sometimes in bins and bunkers.
I have noticed that some feeder manufacturers provide wire rope sizes for supporting each model of feeder. They do not mention any variation with height of the stockpile. I have always designed the cables and hangers for some percentage of the total pile height. I do not know why the manufacturers provide a definitive size cable for each feeder. I am aware that there is a recognized dip in pressure at the center of the cone, but it still is a function of the height of the stockpile.
I have searched for literature to explain how loads at the base of the stockpile are generated but I have not had much luck finding anything that gives me faith in simply picking a cable size from a chart based on feeder size and not on the pile of material directly over top of it.
Can anyone suggest such literature or describe their approach to such a situation. Thanks! ■