mobile hop picker - farm hack · • motors, pump & hydraulics $5,800 • conveyor belts &...
TRANSCRIPT
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Mobile Hop PickerA project of University of Vermont Extension, Vermont Agency of Agriculture and Massachusetts Department of Agricultural Resources through the USDA Specialty Crops Block Grants Program.
Christopher Callahan, PECallahan Engineering, PLLCNovember 5, 2011 – Troy, NY
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Project Team• Dr. Heather Darby (UVM Extension)• Rosalie Madden (UVM Extension)• Roger Rainville (Borderview Farm – Alburgh, VT)• Gene L’Etoile (Four Star Farm – Northfield, MA)• Paul Hendler (Shaftsbury, VT)• Mark Magiera (Bobcat Cafe - Bristol, VT)• Chris Callahan (Callahan Engineering, PLLC – Cambridge, NY)• Dave Bister (Triangle Metal Fab – Milton, VT)• With technical support & donations from several key vendors
including– Dauenhauer Manufacturing (Hop Harvester Parts -Fresno, CA)– Kauffman Trailer, White Drive Products (Hydraulic Motors)– Prince Hydraulics (PTO Pump)– Charlebois Truck Parts (Burlington, VT) and – Sparks Belting Co. (MI).
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– Provide mechanical picking and cleaning capability to Northeast hops growers
– Serve multiple growers with one or two machines
– Provide outreach and education about hops and hops harvesting
Project Goals
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Picker Design RequirementsCapacity 2 bine/min
8 hr/acre10,000 lbs/day wet {2,000 lbs/day dry}
Portability over road with standard tow hitch
Safety similar to farm equipmenttraining req’d
Power 110 VAC or PTO / direct hydraulic
Cone Damage <5% by volume
Operation team of two trained operators
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Full bines enter here Stripping Section
Dribble Belts
Hops and
leaves
Stripped bines
exit here
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Hops
Trash
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Full bines enter here Stripped
bines exit here (far
side)
Stripping Section
Hops and
leaves
Dribble Belts
And new ones are hooked on here (near side).
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Frame – 2”x2”x0.25” Steel – Intentionally Overdesigned
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Subframing - Unistrut Channel for adjustability
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Sprockets, Shafts, and Bearings
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Roller Chain Attachments
Feed and Drive Chain
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Bine Hook (Unmodified, from Dauenhauer Mfg Co.)
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Stripping Fingers
From DauenhauerMfg Co
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Stripping Fingers
From DauenhauerMfg Co
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PTO Pump (Prince)
Hydraulic Motor (White)
Flow Control Valve
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• Trailer $3,500• Frame & Subframe $1,800• Stripping Section $4,100• Motors, Pump & Hydraulics $5,800• Conveyor Belts & Rollers $4,200• Bine Feed $1,200• Total Material $20,600• Fabrication Labor $32,000• Total $52,600
Cost Summary
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So Did it Work?
Yes, with some “adjustments.”
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• Gene L’Etoile – Four Star Farms explains his hops operation and the machine– http://how2heroes.com/videos/field-
trips/growing-harvesting-hops
• Chris’ explanation on the UVM Extension Crop and Soil Team YouTube channel– http://www.youtube.com/watch?v=2iZIkdozeXo
Video
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• COSTS - 1st time fabrication of a prototype is expensive.• WALKING BELTS - Conveyor tracking is challenging on
short, wide belts. V-grooves are nice.• BINE FEED – Extension on back is not completely
necessary. Current design tends to pull bine toward right side of machine. (No directional panels had yet been installed for 2011 harvest).
• DRIBBLE BELTS – Gravity only separation is fine. Rough top belts. Quantity of 5. Need quicker adjustment mechanism.
• ADJUSTABILITY – Very helpful when doing different varieties, serving different farms, or when you have different maturities.
Lessons Learned
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• Correct belt walking – steel shafts and v-grooves
• Add directional panels / chutes
• Add a hydraulic radiator
• Improve dribble belt adjustment
• Improve all belt tensioning adjustments
• Reconfigure bine feed
Next Steps
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Thank You’s
• Roger, Gene, Bonnie, Nathan, Liz, Jacob, Donny, Paul, Larry, Kate, Heather, Rosy, Kerry, Dave, Mark, & Trevor.
• White Drive Products (Dich Zachary)• Prince Hydraulics (Scott Knaack)• Dauenhauer Mfg. Co (Tom Frazer)• UVM Extension• VT Agency of Agriculture, Food and Markets• MA Department of Agriculture• USDA Specialty Crops Program