Something In The Air?
Just what kind of vertical conveyance are you talking about?
Is it really always centrally loaded?
Vertical belts in South Asia have quite a chequered history within these forums going back quite a few years. Is it a particularly nasty application; was the Contractor restricted in scope or otherwise compromised? There was one Indian installation of a vertical conveyor close to a hot reactor, blast furnace perhaps, and the splice was mentioned as failing regularly. Maybe there is something similar happening on your site. ■
Re: Belt Off Tracking In Vertical Conveyors
It sounds to me like it is the splice - when the splice goes around the head pulley it tracks one way and when it goes around the tail pulley it goes the other way (half way around). Wandering side to side is typically a splicing issue.
Hard to really say without seeing it.
Does it do the same under load and no load? Have you checked the squareness of the head and tail pulley to each other? ■
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Belt Tracking - Hook Path
[I agree it appears like a poorly constructed splice. This may be in part due to the conveyor's vertical alignment. It may be very difficult to create a splice that has an inherently good alignment with the belt's basic axis.
There may be more than one option, that only a review of the belt and conveyor arrangement will result with a prudent recommendation. ■
Splice Straightening Out
Dear Mr. Sganesh,
you could (if not already considered) patch in a length of belt by cutting out the failed splice and then making 2 new splices sufficiently spaced from each other.
This could be done in consideration of
- damaged / tired out length of belt in vicinity of old splice
- minimum distance between splices dependant on length of drive module and information of belt supplier (belt supplier to state a distance as for instance 2..5 m).
Please make it 100% sure that this mistracking effect is due to splice failure / incorrectness and not due to other influences as forum members pointed out or your operators put in.
Doing the new splices high attention must be given to straightness of alignment of belt and patch.
Regards
R. ■
Belt Off Tracking in Vertical Conveyors
Dear experts,
In one of our vertical conveyors is running in "/" & "\" shape.
That is , when the belt is off tracking at West side at Head end, ("/"), it is off tracking at East side at Tail pulley.
After half a round, it takes "\" shape. Now at the Head end takes East side ( Where the joint is slightly damaged ), the belt is at West side at Tail end.
Even if joint is weak, I thought that only that area should have off track. Usually +/- 3 meters from the joint.
I have not seen / heard any self alighning roller for belt alighning for vertical / steep angle conveyor as usually the horizontal space is less at head end and at tail end.
Again providing self aligning roller should be the last option as I learnt from this forum.
Renewal of the joint may be the best option. But there is no margin for renewal. We have to change the full length. It will affect production and take more time.
Requesting your advice for any better and faster solution.
Regards, ■