Boom Features - Goldacres Prairie Pro Operator's Manual

Boom Features

Centre Section
The TriTech centre section is made up of two
components, the Paralift rear and the boom centre
section. The two are held together by delta links.
These links allow the boom to be suspended in
order to provide roll and yaw suspension.
Roll suspension is when the boom pitches up and
down at the tips. Yaw suspension is when the boom
moves fore and aft at the tips. If the boom did not
feature yaw suspension there would be excessive
stresses exerted on the booms and centre section
when cornering or corrections of line are made. The
yaw suspension allows the chassis of the sprayer to
move left and right without any movement being
transferred to the boom. The Paralift rear will move
with the sprayer while the boom centre section will
remain static or level as it rotates around the delta
links connecting it to the Paralift rear.
Two hydraulic cylinders with individual nitrogen filled
accumulators connected to each, centre and dampen
the yaw movement.
ra li
The paralift enables the boom to be raised and
lowered to maintain a consistent boom height above
the target.
The paralift rear uses two hydraulic cylinders to
perform the lift, while also acting as a vertical
suspension component. Each hydraulic cylinder has
a nitrogen charged accumulator which also assists
in improving the boom ride. The boom limit height
switch allows the operator to adjust the minimum
ride height of the boom. Boom maintenance
information can be found in the Chapter 10
'Lubrication & Maintenance'.
The hydraulic lift also enables the boom to be raised
prior to folding and then used to lower the boom
onto the boom rests.
ra li Fol
The booms have a hydraulic fold feature, allows the
boom to opened and closed from within the cabin.
ydraulic cylinders with flow dividers are used in
the folding operation of the boom. This ensures that
both sides of the boom are synchronised and open
and close together so that the weight distribution is
the same for both sides of the boom.
- Chapter 9 - Boom
ai e ower
The outer fold cylinder has an adjustable cushion
at the end of the retraction stroke which can be
adjusted using the needle valve in the cylinder body.
See Chapter 11 'Troubleshooting' for help with
calibrating the boom folding action.
Boom Balance
The boom suspension system causes the boom to
adopt the same plane as the spray tanker. If one
side is heavier than the other, the boom will tend to
hang lower on the heavy side, so both sides need to
be balanced for the boom ends to be of the same
height.
To achieve this, a boom drum weights can be
included on the boom and placed strategically so
that it compensates and balances the boom. The
boom can have more weight added and/or be
moved to balance the boom correctly.
Before adding any boom weights, it is advised
that the boom is adjusted correctly. As per the
instructions following in this chapter.
oo a le
Boom cables are a critical part of the booms and it is
important to ensure that boom cables are correctly
adjusted prior to operation.
Loose boom cables can cause boom damage by
allowing the outer boom section to "break away"
too easily. This can shorten the sprayers life by
placing unnecessary stresses on the boom, lift
and chassis. The cable tension can be checked by
inspecting the cable springs, Further information on
boom adjustment and alignment can be found in this
chapter.
Boom Protection Brackets
Stainless steel boom protectors are fitted on the
boom to protect the boom when resting on the
boom rests for transport. It is important to ensure
that the boom protection brackets are fitted
correctly.
oo n rote tor
oom end protectors are fitted to the breakaway
tips to help prevent damage to the boom from
ground strike or from hitting an obstruction.
They also help to keep the boom from becoming
entangled when spraying close to fence lines.
Prairie Pro Operator's Manual MY19 - REV 2
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