A common
task on many farms is preparing for harvesting forages. "Harvesting
forages" can include many different things, such as preparing
small square bales, large square bales, large round bales,
or silage. The methods of harvesting vary along with
the types of material being harvested. For instance,
forages are often grown in areas that are too rough or
steep for row crops. Also, it is very likely that some time
has elapsed since the equipment used for harvesting forages
was last used. Factors such as these have implications for
safe equipment operation.
As with
many farm hazards, those present in forage harvesting situations
are usually recognized. However, the risk perceived by the
operator is reduced to much below the actual risk simply because
of the familiarity of the operation. Invariably, the speed
with which the equipment operates and with which incidents
can occur are underestimated. The result is that operators
overestimate their ability to react. A pto shaft rotating
at 540 rpm will pull something into it at the rate of 7 feet
per second. A baler traveling at 3 miles per hour will pull
crops into it at the rate of over 4 feet per second. Likewise,
belts and pulleys needed for operating many pieces of forage
harvesting equipment will pull something into them at up to
66 feet per second. These speeds are beyond the human ability
to react, not even considering the power that runs the machine
and from energy in the machine itself. Here are some safety
tips to minimize risk while operating different types of equipment.
- Examine
fields for changes since last fall: debris, limbs or foreign
objects, and driving hazards, such as holes and ditch formation
or undercutting.
- Think
through the operation to be used. Did you harvest this field
for haylage last year, and are you going to bale it this
year? Will that change make a difference in how you set
up windrows?
- Review
operations manuals and follow maintenance guidelines. Cleaning,
proper lubrication, replacement of worn parts (belts, chains,
springs, hydraulic hoses, etc.), and replacing shields may
save valuable time during the short harvest period.
- Remember
that the Illinois Motor Vehicle Code requires a Slowing
Moving Vehicle (SMV) emblem on agricultural equipment. If
the SMV emblem on the tractor is obstructed by equipment,
hay on wagons, or haylage wagons, an SMVemblem must be on
the rearmost piece.
- If
traveling between 30 minutes before sundown or 30 minutes
after sunrise, the wagons being towed may require
lighting: two red lights if it obstructs the lighting on
the tractor and a flashing amber on the rearmost piece
- It
is recommended that the extremities-the widest part of balers,
mowers and forage choppers-have reflectors or reflective
tape on them. This will assist the driving public in recognizing
the width of the towed equipment.
- Always
return the equipment to the roadway position before traveling
on public roads. This position makes the equipment as narrow
as possible, an advantage when pulling to the side to allow
traffic to pass.
- The
density of the crop and the terrain will both affect the
speed used. Heavy crops, rough terrain, and too high a speed
can cause clogging or plugging. The more this occurs, the
more the operator is tempted to leave the machine and tractor
running. Always disengage the pto and shut off the tractor.
- Keep
sickle bars and rotary knives sharp.
- Always
disengage the pto and shut off the tractor before working
on equipment.
- The
flywheel supplies a uniform momentum for operating parts
and will continue to turn even after the pto is disengaged.
Always allow time for it to stop turning before working
on the baler.
- Knotter
operation can usually be viewed by a hand turning the flywheel.
Be watchful for co-workers when two or more are working
on/adjusting equipment.
- Extra
caution is needed when bale throwers are used because of
potential energy in the unit.
- The
newer large square balers pose an even greater risk because
of the larger tractors needed for operation and the weight
of the bales produced.
- As
always, caution is needed when loading bales by hand onto
wagons. The experience of the stacker and the person driving
the tractor or truck pulling the wagon are important elements
for safely loading and hauling wagons from the field.
- Always
disengage the pto and shut off the tractor before working
on equipment.
- Stay
clear of pickup fingers, rollers, belts, and raised rear
gates.
- Use
good judgment in placing round bales on slopes after baling.
Even though most will stay where you put them, gravity never
takes a break.
- Equipment
used to handle round bales should be large enough to handle
the bale and equipped with rollover protection. Loader buckets
were not meant to carry round bales without a spear or grapple
designed for the load.
- When
working on slopes, always approach the bale from the downhill
side.
- Bale
transport wagons or trailers should have appropriate carrying
capacity, proper width, and end racks.
- Use
good judgment when stacking round bales. High bales are
sometimes easier to get up than they are to get down without
problems.
- Always
disengage the pto and shut off the tractor/harvester before
working on equipment.
- Stay
clear of the discharge spout. Allow the machine to stop
before hooking up wagons.
- Keep
knives sharp and properly balanced.
- Allow
all components to come to a complete stop before inspecting/adjusting/repairing.
- Doors
and shields should be tightly latched to deflect objects
thrown by the cutter.
Disclaimer and Reproduction Information: Information in
NASD does not represent NIOSH policy. Information included in
NASD appears by permission of the author and/or copyright holder.
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