Anatomia di un cambio centrale: progettazione del flusso di potenza

The central gearbox is the “torque commander” of the rotary tiller. Its function goes beyond simple transmission; it is a complex system of load management and kinetic conversion.

1. Lo spostamento vettoriale di 90 gradi

The primary mechanical function is to convert the longitudinal rotational energy from the tractor’s PTO into a transverse rotation. This is achieved via a Set di ingranaggi conici a spiraleA differenza degli ingranaggi conici rettilinei, gli ingranaggi a spirale hanno denti curvi che si innestano gradualmente.

This “progressive mesh” reduces impact stress by 30% and noise by 8dB, which is critical when operating at 1000 PTO RPM.

2. Dinamica di moltiplicazione della coppia

In heavy clay soil, high speed is less important than raw cutting force. The gearbox acts as a reducer. For example, with a 1:1.92 ratio, an input of 500 Nm at 540 RPM is converted into approximately 960 Nm at 281 RPM. This torque multiplication provides the “breakout force” needed to fracture compacted soil layers.

3. L'equilibrio termico

Heat is the silent killer. A gearbox operating at 60kW generates approximately 1.8kW of heat energy. In the “Tropical Series,” we manage this via an Coppa dell'olio espansa E Design delle alette radianti.