Tensions in a Static Belt

Posted in: , on 28. Feb. 2012 - 07:44

Hi all,

i am looking for an estimation of the tensions in a static (stationary) belt. Obviously for short, relatively low lift conveyors the tension throughout the belt would be near enough to the take-up tension but what about for high lift conveyors or long length (>1km) conveyors?

I use Belstat when designing conveyors, for those that are familiar this software, are there design inputs that I can enter to get a reasonable estimate?

Thanks,

Matt ■

Antworten
Login to add a Reply
Lyle Brown
(not verified)

Re: Tensions In A Static Belt

Erstellt am 28. Feb. 2012 - 01:31

Not sure about your application or Belt stat, though consider a FBD - which forces are acting - maybe mgh of belt.

Regards,

Lyle ■

Beststat Lift Tension

Erstellt am 28. Feb. 2012 - 05:51

Dear Matt,

The Material Lift Force is already provided, depending on your net (tail to head) lift geometry, tonnage, and belt speed. Go to the icon header button to right of RESULTS and click BSO FILE. Scroll down to Summary at bottom right box section below Total Gearbox Losses & Drive Pulley Drag. You can see the following itemized forces:

1. Lift force ..................................

2. Friction Force ...........................

3. Miscellaneous Drag Force ........... ■

Lawrence Nordell Conveyor Dynamics, Inc. website, email & phone contacts: www.conveyor-dynamics.com nordell@conveyor-dynamics.com phone: USA 360-671-2200 fax: USA 360-671-8450

Re: Tensions In A Static Belt

Erstellt am 14. Apr. 2012 - 07:30

Hello Mattsec,

Tension in belt is calculated by following principles:

1) For gravity take-up conveyors: Tension in belt at take-up is known. The tension in belt at other points can be calculated by considering stability of belt length chosen segment (stationary situation).

2) For non-floating take-up pulley conveyors (screw take-up and non-active winch take-up): Tension diagram area is constant, which is known value. This along with the belt segment stability provide tension values.

One may find out the solution or refer to literature of his choice or if one has my book, he may refer page-430 for some information.

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.

Pune, India.

Tel.: 0091 (0)20 25871916

Email: parimul@pn2.vsnl.net.in ■