Greetings from the Fozen Eastern Wilderness,

Since you are moving a uniform product you simply need a conveyor that is rated for moving 18 tons of material per hour.

You have to have a flat pulley system for both delivery and return with side boards to keep the boxes in place.

You also need to install guards under the return side of the belt to protect anyone under the belt.

The conveyor has to be a steel framed conveyor to

allow for the flat pulleys on the delivery and return side, with manual adjusment for belt tension.

The conveyor should be 480 volt to maximize efficiency.

The flat belt idlers and head and tail pulley have to be capable of with standing 18 tons per hour of material weight which is small by todays standards and we still do not know what type of drive unit you intend to use, will it be chain drive through a reduction gear box or v belt drive or direct drive head pulley? Or for that matter whether it may have dual hydraulic drive pulleys for the head and tail pulleys

The head and tail ulleys have to be flat as well to move packages.

Are the idler bearings greasable or not.

What type of bearings do you wish to use? tapered cup and cone, ball bearings, or tapered barrel roller?

you have to design or spec a conveyor that will bmove 6 tons every twenty minutes or 600 pounds per minute

Can the work area support the combined weight of the conveyor and parcels all at once?

the elevation will require the use of a belt that

has a tewxtured surface to keep the boxes from slipping back down the belt to the tail pulley.

The only thing you have not told us is what dimension is being set on the belt for transfer of boxes to determine belt width.

You need to install emergency stops from the rear to the front of the conveyor.

Now that I have done all your work for you, all that is necessary for you is to go a conveyor

maufacturers catalog and select a "complete ready to install parcel conveyor" fifty feet long that will move 18 tons per hour that can be elevated 14 feet to a tranfer point - you also neglected to tell us if the transfer points were in line or set an angle for box delivery at the bottom and whether the discharge end was in line or at an angle in relation to the storage area.

The biggest problem you have is your lack information, we do not know if the conveyor is to be suspended from the ceiling or supported on stands from the loading floor, what electric power is available, what the angle of attack is in relation to the conveyor or whether the boxes will be loaded and unloaded by hand?

A+B+C+d+e+F= your conveyor but it is not that simple, as there are still to many unknown variables for your problem in my opinion.

"No magic formulae, talismans, garlic or silver bullets to help you with this problem", designing a belt conveyor is not a simple task.

Granted it all goes back to algebra but you need to do more research as it is something thst hss already been designed with thousands of man hours.

Sorry to ruin your day but you asked for help and it is not that simple as you cannot function linearly with this project. ;^)

lzaharis ■

You have not given enough detailed information for anyone to give you an accurate answer.

You need to do your research and the internet and your university liabrary is the best place to start.

Here is a good site on packaging conveyors to get you started.

http://www.flostor.com/library/intro...conveyors.html

Once you have done your research and can come back with more specific questions than we may be able to be more helpful.

Good luck.

Gary Blenkhorn ■

Your maximum box diagonal, on the conveyor, will be 1280mm & there are 180 to be moved in 1 hour. Therefore you can safely use a conveying speed of about 4m/minute. This would keep the box corners square & opens up your range of conveyors. Powered rollers are going to be more economical, there is no return strand requiring guarding & no tensioning. ■