Re: Bend On Conveyors
Dear diktosim
You require large radius for convex curve of your 3 roll troughed conveyor.Minimum radius is required by complete analyses of conveyor
Belt edges beeing on larger radious are having more stress than centre of belt where radious is minimum.
large radious holds these stresses within acceptable limits.
due to radius difference .
I feel 1.5 m - 2 m radious will be enough for your application to avoid buckling of belt /to avoid over stresses on belt edges.
you can provide idler at 50 percent of spacing at curve portion
A R SINGH ■
Re: Bend On Conveyors
Dear Mr. Dikotsi Molefe Pr techni Eng
It seems you have 3-roller carrying idlers and possibly single roller return idler. For 600 mm wide belt, the roller length is normally around 235 mm for 3-roller idler. It seems you are using comparatively longer roller (290 mm). Please mention the troughing angle of 3-roller carrying idlers. There is a specific value of convex radius which one has to follow in installation of idlers. The radial zone should be tangent to the straight line portion of conveyor at both the ends. In a more serious kind of installation, the radius is calculated in accordance with the troughing angle, type of carcass and belt tension. However, in your case, possibly we can take the value directly from table.
Regards,
Ishwar G Mulani.
Author of Book : Engineering Science and Application Design for Belt Conveyors.
Advisor / Consultant for Bulk Material Handling System & Issues.
Email : parimul@pn2.vsnl.net.in
Tel.: 0091 (0)20 25882916 ■
Bend on conveyors
Honourable members
I have 600mm width belt that inclines from the chute for 6 meters and that gets horintal(flattens) for another 10 meters where it dumps ash. the problem i have is that at the bend between the incline and the horintal i have a hump caused by a middle idller. the idler sizes are 130mm dia X 290 length. Would it help if i install a small diameter idler there to remove the hump of should i install two longer idlers at that point instead of three. I suspect that this area causes tearing on the belt metal splice since i have experienced some lately.
Could anyone assist me please. ■