Re: Making It Longer...
Dear Mr. JerryThm
You have got a conveyor which has got centre to centre horizontal distance 10 m. You have said that the head pulley is 2 m above ground level; I presume that tail pulley will be around 0.75 m from ground level. This means conveyor inclination is around 7 degrees. Now you want to increase the conveyor horizontal centre to centre distance by 2 m. Firstly there are two ways of doing this thing.
1) Instead of disturbing the complete conveyor, provide convex curvature near head end and extend it by 2m. The convex curvature zone is likely to be around 3 m, considering 25 m radius of curvature (suitability of 25 m radius is assumed looking at your general information).
2) You have to reinstall the entire conveyor straight incline from tail to head. This will create more disturbance in the installation.
Regarding the adequacy of motor and drive for 2 m extension, theoretically no body can comment unless full particulars of the conveyor are known. However for such a short conveyor, generally the kW required for lift and terminal kW values are dominant and possibly 2m increase in length should not alter the situation (unless your drive is exceptionally critical). So option for you in this matter is to take risk and amend the conveyor or else contact the conveyor designers in your country or put the basic information of the conveyor in this forum and you may get the response.
Regards,
Ishwar G Mulani.
Author of Book : Engineering Science and Application Design for Belt Conveyors.
Author of Book : Belt Feeder Design and Hopper Bin Silo
Advisor / Consultant for Bulk Material Handling System & Issues.
Email : parimul@pn2.vsnl.net.in
Tel.: 0091 (0)20 25882916 ■
Making it longer...
Good day and happy to find you here. I was recently involved with a project and the scenario goes like this:
There is a simple conveyor system, the motor is 2m from the ground, the pulley on the ground and between them the distance is 10m. Of course a number of smaller rollers in between.
The target is to move the pulley two meters further, make the horizontal distance 12m, alter the declination a few degrees and run the system.
I'm not an expert but I assume that we should consider:
1. The tension of the belt
2. If the motor can still handle this as everything changes and if there is enough torque
3. At the other end the pulley and its bearings.
Do you think I'm correct? At the moment some experts say that we should only think the motor and as its 3.5kw it should be ok. I'm not that confident though. I have speeds and mainly the product is aggregate parts, quite heavy.
Also by changing the tensioning shall I assume that the elasticity will change as well?
I'm looking initially for a simple answer, simple figures as I'm an amateur and then I can study further and deeper.
Many thanks all,
Jerry ■