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Dan
USA
3 Posts |
 Posted - 01/09/2010 : 10:21:34
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| Yesterday I did 60 ton of stone, about half way through the first truck the stone started to wave back on me. My solution to the problem was to speed the belt up to compensate for the wave back. The question i have is there any other methods for this problem? |
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whole9yards
USA
898 Posts |
Posted - 01/09/2010 : 22:46:23
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There are so many variables that a set answer for all is not possible. Are you saying the wave-back was because the stone was frozen? Sometimes, slowing the belt way down will help. You just have to play with it, because every material acts differently.
Rule: Run the belt fast enough to carry the material without rock bounce. |
-W9Y
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Fishbone
USA
956 Posts |
Posted - 01/10/2010 : 08:44:03
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If it was washed stone with ice on it, but not frozen in clumps, then I'm with W9Y, the first thing I'd try is slowing the belt down. Sometimes speeding it up in that situation will result in the belt "sliding" under the material, but it sounds like it worked for you on that job. Another option that usually isn't possible, but works great, is to get your hopper up higher to reduce the angle of the feeder. It kind of depends on the site, but using a hill or man made ramp, etc. can help quite a bit.
Winter does present some frustrating challenges, sometimes they are beyond your control. The thing I hate the most is a load of stone that's so frozen it won't come out of the truck (direct dumping), or it's good for awhile until the loose stuff undermines the frozen crust on top, then it plugs the truck's chute.
I've never really had any significant problems from cold when pouring concrete. On the other hand, stone, gravel, sand, etc., in the winter has left me feeling like I was beating my head against a wall. Usually anything except a really frozen load can be overcome, but it can be a pain. |
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Edited by - Fishbone on 01/10/2010 08:50:04 |
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Fishbone
USA
956 Posts |
Posted - 01/10/2010 : 09:01:55
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This is what I meant... pay no attention to the crazy art skills.
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Dan
USA
3 Posts |
Posted - 01/10/2010 : 10:00:15
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| It was just one of those days. I tried slower and it went no where so then i sped it up it moved, but I had rock bounce everywhere along with a big mess. I ended up playing with the speed all day and having the skid steer slowly dump the stone into the hopper. I have only been running the belt for about a year now so I thought it would not hurt to ask if there was a different trick to the trade. Fishbone like the idea and will remember for next time just not practical on this site. |
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biged
3087 Posts |
Posted - 01/10/2010 : 11:43:51
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| Fish how much for that good looking truck. |
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terry
421 Posts |
Posted - 01/10/2010 : 11:49:13
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Fish
Good thing your boom is in the cradle because your outriggers aren't out. (lol) Happy Sunday.Terry |
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Fishbone
USA
956 Posts |
Posted - 01/10/2010 : 12:52:15
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quote:
Originally posted by biged
Fish how much for that good looking truck.
I'll make you a hell of a deal Ed.
Terry, it's a new fly weight design, no outriggers needed. |
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KBrost
USA
4 Posts |
Posted - 03/31/2010 : 06:34:45
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| The way to deal with frosty stone is heat. You need to apply a small amount of heat to the feeder belt. If you have a torpedo style heater placed under the feeder. That heat will make the belt sticky enough to grab the material. |
Kbrost |
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Speedy
Canada
4194 Posts |
Posted - 03/31/2010 : 08:00:27
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KBrost, that's an old gravel crusher's trick. A microscopic film of ice or frost forms on a conveyor belt, and even at a modest angle, there isn't enough friction to hold the aggregate in place. A tiger torch in a pipe will work too. As will an old-fashioned 'smudge pot'.
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If you can't fix it with a hammer....you've got an electrical problem. |
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KBrost
USA
4 Posts |
Posted - 03/31/2010 : 13:34:14
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| It just takes a littel heat. How musc depends on ambient temp and wind. A bertha torch or a torpedo heater seem to be the most available heat source. Belt speeds won't make any difference if you have snow and ice in your material and things get worse the colder it gets. Thank goodness we should be done with that for a few months. |
Kbrost |
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frozen stone
