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A picture good for ...

... douglnij ■

Originally Posted by douglnij

Dear

We have motorized overhead trolley/tripper belt conveyor to transport and prepare heaps material. The conveyor trolley moves frequently between certain distance to prepare mix bed heap of crushed limestone. But, we have frequent belt failure due to pre-tension and continuous movement of trolley.

I need to find improve design of trolley belt conveyor for this application. Specially, travel distance, belt specification, brake system of trolley etc.

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We could use a few more pictures-

If your tripper is motorized it is fighting the weight of the belt, weight ore and resistance under load while traveling, wight of the belt tension unit if it is integral with the tripper

A wire rope winch powered tripper Is something I can tell you by my experience that it will work and work very well with little repair and maintenance.

The winch has a double drum "one cable wrap" system which is tensioned with four sheaves- two sheave pulleys at each end for each drum to create and multiply the pulling power for the winch to pull the tripper back and forth across the surge pile.

The belt is tensioned with a mechanical counter weight at one end to create belt tension.

Mr. Nordell can help you with that very easily if you contact him at Conveyor Dynamics Inc.

lzaharis ■

Hi

There is nothing wrong with this system / concept.

You did not give much info - but I suspect you are having issues with the belt splices...then if so...you need to look at the details - splice, belt tensions and pulley diameters and curve radii

I assume that there is no issue with belt drift..

Thanks

James ■

I don't need any more pictures.

Your chutework looks like it was made by the A team on a bad day!

The access ladder is positively dangerous. Decapitation is imminent.

I suspect that if I told you to check the design documentation you would reply that you can't because there isn't any.

If you build stuff off the bag of a fag packet sketch then don't be surprised if the fag packet catches fire. Sometimes you get lucky and sometimes you don't. ■

Existing layout drawing with complete specification is necessary for review. What is the type of tensioning arrangement used? ■