RACINE, Wis. - A new 120-foot boom option for the Case IH Patriot 4420 self-propelled sprayer increases productivity by allowing applicators to cover more ground in less time. The extra-long sprayer boom has the potential to increase productivity 33 percent over a unit equipped with a 90-foot boom and 20 percent compared to a 100-foot boom. Case IH will unveil the boom at the Midwest Ag Industries Exposition (MAGIE) in Bloomington, Ill. Aug. 22-23.
"To develop this longer option, our engineers built on the strengths and features of the boom design that has been proven in years of field use on Case IH Patriot Series sprayers," says Ken Lehmann, Case IH application equipment marketing manager. The truss-style, three-section boom is engineered for strength and durability, with few support structures to add weight.
"Obviously, adding length to a boom increases the weight of the vehicle, predominantly in the rear," Lehmann adds. "Here's where the Case IH Patriot sprayer design really shines. With the cab in front, product tank in the middle and engine in the rear, Patriot sprayers have the best weight distribution in the industry."
The additional weight of the 120-foot boom doesn't significantly affect the Patriot's optimum axle weight distribution, minimizing soil compaction and rutting and optimizing horsepower utilization through the drive system, Lehmann says.
The inner, mid and outer sections of the new 120-foot boom are all constructed of tube steel; only the breakaway section is made of aluminum. The inner and mid-boom sections have larger steel tubing than either the 90- or 100-foot boom.
The new boom also features a 44" vertical cross section. According to Lehmann, "This large cross section dimension, coupled with the increased size of the boom structure tubes, aggressively resists vertical loading."
Cushioning the ride and dampening the shock load felt by the spray boom promotes longer boom life -- regardless of its length.
"The 120-foot boom employs a three-stage suspension system to absorb energy from field loads," Lehmann continues. "The primary source of protection from vertical loads is the chassis' trailing-link wheel suspension. For impact loads, second stage gas-charged accumulators on the boom height cylinders and third-stage gas-charged accumulators on the boom tilt cylinders absorb energy and protect the boom."
The fore and aft boom suspension is the same as smaller Case IH boom designs -- each boom is independent and suspended by a combination of mechanical design and hydraulic pressure. Each boom rotates at the base about an angled axis.
"As each boom moves forward or back, they also must rotate upward," Lehmann explains. "This geometry uses gravity to dissipate fore and aft energy, and helps keep the booms centered."
In addition, Case IH uses a "center pivot boom" design that allows the boom to be more independent of the frame. Boom motion can be further controlled through a suspension system which allows the boom to "float" across a field over a wide range of travel speeds, yet remain level with the ground when cornering and on side hills. Larger coil springs and four shock absorbers have been added to the center section to minimize the amount of boom tip travel.
An optional automatic boom height control also can be added to the 120-foot boom package. This feature helps maintain proper boom height for optimum crop coverage, and reduces stress and fatigue from contact with the ground.
Boom folding & visibility
The 120-foot boom is a side-sweep, tri-fold design. The inner sections fold and unfold in the same way as other Case IH booms, via top-hat switches located on the hydrostatic control handle. Folding and unfolding the mid and outer boom sections are performed with the same switch, with the right and left sides on separate switches.
With the tri-fold design, the entire boom package is vertically more compact than the fold-over-the-top boom. This compact package greatly enhances side and forward visibility from the operator's seat, with the booms in the cradled or transport position.
Available configurations & plumbing
The new 120-foot boom is offered with these configurations:
- Seven-section standard flow and 20" nozzle spacing with:
- AIM CommandTM spray technology and dual Combo-Rate nozzle bodies, or
- Conventional spray technology and Arag 5-way nozzle bodies
To supply adequate flow for the longer boom, product plumbing has increased. "Hose diameter and spray bar lengths are sized to provide optimum flow capabilities and equal pressurization across the entire length of the boom," Lehmann says.
Case IH is a global leader in agricultural equipment, committed to collaborating with its customers to develop the most powerful, productive, reliable equipment - for those who demand more. With headquarters in the United States, Case IH has a network of dealers and distributors that operates in over 160 countries. Case IH provides agricultural equipment systems, flexible financial service offerings and parts and service support for professional farmers and commercial operators through a dedicated network of professional dealers and distributors. Productivity enhancing products include tractors; combines and harvesters; hay and forage equipment; tillage tools; planting and seeding systems; sprayers and applicators; and site-specific farming tools.