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A large square baler from Claas, yet to be named, has taken out a gold Agritechnica Innovation Award.
Innovation awards at international agricultural events are always on the wishlist of manufacturers.
Harvesting equipment and tractor manufacturer Claas appears to have pulled off a first, not by taking a gold Agritechnica Innovation Award, but for its next generation concept of a large square baler, that until 9th November won’t have its name released.
Described as being capable of baling up to 70 tonnes per hour, the completely new, innovative concept will place the machine above that of the current Claas Quadrant range we know today.
The machine, with bale dimensions of 120cm wide by 90cm high and a transportable length of 2.45 metres, is said to combine high throughputs with consistently high bale densities. In practice, this new concept achieves up to 70 t/h throughput when baling straw, maintaining constant bale densities of 210 kg/ m³, climbing to 235 kg/ m³ at peak performance, delivering bales of up to 500kg.
Among other features, these functions are achieved with the main gearbox integrated into the frame with a straight-line power flow. The driveline operates with two longitudinal flywheels, each operating at 1650 rpm and weighing 202kg, which store considerable inertia to ensure uniform compaction. Power delivery is handled solely through efficient, lowloss, and wear-resistant enclosed gearboxes, in addition to two power belts. Sensors in the intake rotor or feed rake gear, continuously monitor gear loads and automatically adjust assistance systems, including an AI-assisted plunger density control and bale length regulation.
On start-up, the flywheels are switched on in succession, followed by the plunger and then the rotor, reducing start up loadings compared to previous solutions. In the event of overloading, the flywheels are rapidly de-coupled via an electro-hydraulically activated multi-plate clutch, separating them from the main driveline.
The plunger is also actively braked in this process, removing the need for shear bolts and cam clutches. Since the entire drive train consists of power bands and enclosed gearboxes, maintenance tasks are significantly reduced. Besides the PTO input shaft, the only other shaft drive leading is to the knotter mechanism.
Further innovations include a new mechanically driven single-row binder for the pre-chamber and a newly designed doubleloop knotter system. The latter generates two loop knots per tying operation, merging the benefits of McCormick and Deering knotters while avoiding their individual drawbacks. The layout is said to ensure secure, dependable knots with minimal twine tension, with the additional benefit of not leaving twine remnants in the paddock.
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