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Post by European_A on Jul 20, 2011 23:56:06 GMT 1
I'm developing a concept combine and I think you could help me.
I think a curved unloading tube would make possible an unloading closer to the trailer. But it would be impossible to place a screw auger into a curved tube...
What is the unloading system for forage harvesters? Is it a pneumatic system? Could it be used for unloading grain from a combine harvester tank?
Thank you
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Post by European_A on Jul 24, 2011 18:12:18 GMT 1
A small sketch for illustrating the idea...  Uploaded with ImageShack.us |
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Post by eppie on Jul 27, 2011 18:15:29 GMT 1
There are screw augers that can bend around slight curves, because they have no center shaft: They use it to automate pig feeding in existing barns where they can be bent around to fit. They are called flex augers. www.roxellusa.com/products.php?product_id=363A pneumatic system wastes a lot of power to generate enough airflow. creating air pressure takes lots of power because the air compresses so much. Relatives of mine, work at www.walinga.com/index.php?id=19 which builds vacuum transport solutions. Very flexible, but just look at the tonne/hr and the power required: They allmost require 1hp per tonne/hour of moved material. Unloading a 9 ton grain tank in one minute, would mean 540hp required to run the blower.... |
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Post by European_A on Jul 27, 2011 22:57:47 GMT 1
Hey Renze!
The flex augers are really interesting but since they can bend around slight curves. On the other hand, the maximum capacity(6,300 kg per hour) would ruin the harvesting time...
Despite required power the vacuum transport solutions are not that bad.
I currently think about a curved tube with several sections of conventional auger joined by elastomer parts in order to achieve the curve.
Thank you!
P.S. What has happened to this forum? I used to take part some years ago and it was very active. I still remember the b/w pictures of the New Holland "Magnum" mock-up...
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Post by eppie on Aug 1, 2011 20:51:43 GMT 1
That capacity is because the existing systems are designed to fill feeding bins in sheds: then its ok if it takes an hour a day.
Perhaps they could be built larger as well.
p.s. the auger is only needed for elevation: when the grain is above the sideboard of the tipper, you can just add a hollow pipe at 30° downslope, i suppose.
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Post by Bernhard on Aug 5, 2011 11:57:45 GMT 1
That capacity is because the existing systems are designed to fill feeding bins in sheds: then its ok if it takes an hour a day. Perhaps they could be built larger as well. p.s. the auger is only needed for elevation: when the grain is above the sideboard of the tipper, you can just add a hollow pipe at 30° downslope, i suppose. The Godfather of mechanics, master of all, has spreaded his wisdom. We have to praise the Lord for You being alive! ;D |
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Post by European_A on Oct 31, 2011 0:21:20 GMT 1
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pascal
Junior Member
Posts: 25
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Post by pascal on Jan 18, 2012 13:49:31 GMT 1
Looks like you have introduced some insect DNA in your combine ! Nice round shape. Are you a student or professional designer ?
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Post by Woodbeef on Feb 18, 2012 18:12:42 GMT 1
Hey Man,how ya been? What about running an auger with the shaft in the straight part,then just flighting in the curve? Feed mills over here use this idea. Like Renze was talking about.
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Post by European_A on Feb 22, 2012 22:29:21 GMT 1
Pascal, it's got crustacean DNA... You can read the full story at: www.ivtinternational.com/design_challenge_seco_september_11.phpviewer.zmags.com/publication/c53b8b7d#/c53b8b7d/1I'm a professional designer. You can see more concepts at IVT magazine website. Hey Woodbeef! How long! How are you? It's nice to see you around. We must be among the first users in this forum...I remember everything begun with that b/w picture of the New Holland TG Series... Concerning the combine it is just a concept but something to think about in order to develope new ideas. The unloading system is supposed to rotate 360º, so that tractor and trailer wouldn't need to be parallel to the RHD of the harvester. |
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