Balancing Belt Tension
Balancing Belt Tension
(OP)
We have a moving shiploader boom with cover reels on both ends. As the boom shuttles through a cradle one reel pays out and the other reel pays in. We are trying to balance the two reel forces to not overpower the motor that actually pushes the boom.






RE: Balancing Belt Tension
RE: Balancing Belt Tension
RE: Balancing Belt Tension
RE: Balancing Belt Tension
RE: Balancing Belt Tension
RE: Balancing Belt Tension
Please tell us some more. What's the thing on the left end of the motor shaft? A brake?
Is there any kind of friction clutch lurking in the system?
What VFDs are you using?
Do you have position encoders?
The more you flesh this out for us the more likely it will paint a solution into one of our minds. The picture was a big help be not enough.
Can you explain the mechanical situation with more detail? I'm not clear on how these drives would battle with the boom drive.
We're EEs here so don't assume we know what a "cover reel" is.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Balancing Belt Tension
Posting the same question in multiple threads is frowned upon, but a "Heads-up" asking the posters in other fora to look at this thread is acceptable.
Have you done an evaluation on how much variation in tension is allowable? I expect that tension is not critical as long as there is enough to move the machine. A wide tolerance may make the solution easier simpler and cheaper.
Bill
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