الاثنين، 29 يوليو 2013

Adjustment of the knotter in big baler part2 Result of all modifications

A.Reduced driveline torque
Advantages :
Better overal performance
Less wear on components
Smooth driveline = less noise when knotting
Increased reliability
B.More consistent and longer pigtails
Double knotting results in twines around the bale with two knots
One to join top and bottom twine when tie-ing off a bale (knot I)
One to join top and bottom twine of the new bale (knot II)

Past weakness of NH knotter was knot II which tended to have short tails which could unroll. High density and silage baling (some grass in the knots) are conditions which worsen the problem.

NH knotters have changed (patent!) to overcome this weakness. Competitive knotters still have this weakness.
B.More consistent and longer pigtails – Summary of the test
NH knots do have tail lengths of around 20mm. There’s no difference between knot I & II anymore, all knots have good length knot tails.
Competitive double knotter clearly had problems with short tails  with knot II. Several borderline tails (5mm). All nr. I knots were OK: all longer than 10mm and of approximately the same length as NH knots.
Unfortunately one poor knot is enough to cause a bale to explode.
  NH BB9080 rotor cutter vs comparable competitive unit 
Oat straw. Spain 24/6/2008. 10.00-12.00

C.Improved serviceability

Easy and quick removing of the shielding to access the knotter.

This simplifies threading, adjusting and maintenance






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