Belt Sway Switches in Belt Conveyor

Posted in: , on 15. Jul. 2012 - 15:22

Hi

I wan to know that , is there any rule to decide ,how may belt sway/off track switches should be there in a belt conveyor. And at what location and distance between them.

We have in one of our conveyor which is almost 250 mtrs long , 8 off track switches. 4 on each side. The first switch from tail end pulley is at around 40mts distance from tail pully and same in case of first from head pully.

Is it OK ? ■

Conveying
Transport
Belt Conveyors
Mechanical Conveying
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Re: Belt Sway Switches In Belt Conveyor

Posted on 16. Jul. 2012 - 04:08

I would be looking into why the need for off track switch in the first place and correct that problem. Off track switches are a lasy mans way of fixing a problem, I say the same about idler trainers - I will only use them as a very last resort and that all efforts to properly train the belt have failed.

I have installed many miles of conveyor systems from 100 feet long to 10,000 feet long with no need for any off track switches. A good maintenance program would be a better investment than those switches. ■

Gary Blenkhorn
President - Bulk Handlng Technology Inc.
Email: garyblenkhorn@gmail.com
Linkedin Profile: http://www.linkedin.com/in/gary-blenkhorn-6286954b
Offering Conveyor Design Services, Conveyor Transfer Design Services and SolidWorks Design Services for equipment layouts.

Belt Sway Switch

Posted on 16. Jul. 2012 - 06:40

Hi gary

Thanks for your response.

I really appriciate the way you think and your attitude. At our site our mechanical engineers need some more off track switches other than designed switches. Specially very near to tail end.Thats why I was interested to know if there is any standard or rule for number of switches ,location and distance between them. ■

Lyle Brown
(not verified)

Re: Belt Sway Switches In Belt Conveyor

Posted on 16. Jul. 2012 - 12:35
Quote Originally Posted by panthripuView Post
Hi gary

Thanks for your response.

I really appriciate the way you think and your attitude. At our site our mechanical engineers need some more off track switches other than designed switches. Specially very near to tail end.Thats why I was interested to know if there is any standard or rule for number of switches ,location and distance between them.

Agree with the previous comments - fix why is it tracking off (given that the switch does not solve the problem).

How far can the belt "deflect" and hence track off between each switch?

AS1755 provides some guidance (for UG coal mines, at least).

Regards,

Lyle ■