Meter is a measuring instrument.

Your chain drag can be found on Renolds website without too much bother. Accumulator or what? You have not quite given any load data. Is it unit load or total UDL?

Motor power will be somewhere between 2.5 & 5.5 kW because the gearbox losses are generally greater than the conveying requirement. So you have 3 gearmotor sizes to choose from depending on the reduction level. SEW do some handy catalogues but the best by far is/was the Brauer publication. ■

Dear Mr. Lineker,

Furnish more details to calculate. For basis you may consult books or your country standard.

Regards.

A.Banerjee ■

Dear Mr. Lineker,

Calculating tractive pull and power for chain conveyor is a routine matter in bulk material handling. Please refer the relevant literature on the subject. In general you need to have following input data.

- Conveyor length

- Conveyor lift

- Material being handled, whether object or bulk material.

If it is object, then such object weight and the number of objects to be transported in one hour. If it is bulk material then capacity mtph.

For deciding the pull and power, firstly one has to decide the type of chain conveyor. The suitable type of chain conveyor depends upon the application, and it requires knowledge about various types of chain conveyors, their operational characteristics and their limitations etc. Having decided the type of chain conveyor, tractive pull and power is decided as per the well-known formulae. The resistance for required tractive pull comprises of frictional resistance and gravity resistance due to lift. Having decided the resistances, its product with the velocity will give the needed kW. In general, industrial resistance for accelerating the material happens to be quite low due to slow speed nature of the chain conveyor, and thereby the same can be ignored.

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 25871916 ■

Power in a conveyor is all about mass, friction and speed, the sort of thing I did in school physics before I ever became an engineer.

Work out the total mass you are moving.

Establish a coefficient of friction applicable to the application, sliding or rolling (or both).

Check the velocity that the mass will be moving at.

Combine together the above in standard school physics formulae and out pops the required power.

"...and that's all there is to it!" ■

Hi Lineker

What is your length, lift and loading?

LSL Tekpro ■