loads on each rollers
loads on each rollers
(OP)
Hi everyone.
I have 9 rollers in semi circle arrangement, receiving 3 tons of total loads.
I want to get the load of the center roller, anybody points me out where can I get this information? or how.
Thank you so much.
Regards,
cgelang
I have 9 rollers in semi circle arrangement, receiving 3 tons of total loads.
I want to get the load of the center roller, anybody points me out where can I get this information? or how.
Thank you so much.
Regards,
cgelang





RE: loads on each rollers
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RE: loads on each rollers
Maximum: 3 tons
Generally somewhere in between.
RE: loads on each rollers
then sum(cos(theta)^2)*P0 = applied, where theta is the angle (to the vertical) of the roller loads, and P0 is the load in the roller on the CL (the one you're interested in).
another assumption is that the roller loads are equal ... sum(cos(theta))*P0 = applied
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RE: loads on each rollers
RE: loads on each rollers
I don't think that's reasonable at all.
Perhaps if all of the rollers are perfectly aligned with each other.
Perhaps if each of the roller supports deflects identically.
Perhaps if the "pallet" (if there even is one) is perfectly flat and very stiff.
RE: loads on each rollers
alignment and stiffness variations ... sure that an assumption. similar rollers ... i think it's reasonable to assume that the rollers are essentially the same.
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RE: loads on each rollers
My picture looks like this:
RE: loads on each rollers
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RE: loads on each rollers
RE: loads on each rollers
Regards,
Mike
RE: loads on each rollers
http://www.maintenanceworld.com/Articles/timken/ca...
RE: loads on each rollers
Thanks MintJulep, the arrangement of the rollers is like what Tmoose has attached.
@rb1957-I agree with your assumptions, but i modify a little to be more close. I just assume that the force by the vertical vector component on 8 rollers(4 @ left & @right) are the same.(though its not, but fair assumption)
Thus load at center roller = 3tons - sum of 8vertical forces on rollers.
Thanks.
Regards,
cgelang
RE: loads on each rollers
If your rollers have an arrangement of constraints similar to a cylindrical roller bearing then you can find an analytical approach in any rolling element bearing text. The actual load distribution at the rollers can be greatly affected by the stiffness of the components, dimensional accuracy of the components, and any installed preload or clearance in the assembly.
Hope that helps.
Terry
RE: loads on each rollers
if you mean you want a symmeric loading (a reasonable assumption) then my post gave two options for that. note my 2nd loading assumed each roller carried the same load, but as a vector, normal to the contact cylinder; so only the vertical component is effective in reacting the applied load.
btw, Tmoose's link wouldn't open for me.
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RE: loads on each rollers
RE: loads on each rollers
RE: loads on each rollers
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