Mondo Macchina - Nr. 7-9 - Anno 2023

n. 7-9/2023 53 TECHNOLOGY te paratie orizzontali di materiale plastico o panieri disposti in due nastri a movimento continuo, che si spostano verso la parte posteriore della macchina, dove un gruppo di trasporto colloca le olive nelle tramogge. Ognuna di esse è provvista, nella parte superiore, di una coclea che assicura un’uniforme distribuzione del prodotto nel volume disponibile. In alternativa allo stoccaggio temporaneo a bordo, è possibile avvalersi di un braccio a “collo d’oca” per trasferire il materiale in un rimorchio trainato da un trattore, parallelamente alla macchina per la raccolta. Le tramogge vengono infine svuotate in rimorchi per il trasferimento al frantoio. Lavinia Eleonora Galli cause of their lower mass and because the tracks left by the wheels are offset from those of the tractor tires, thus producing less localized ground pressure. Self-propelled models operate more easily on steeply sloping slopes: they are self-leveling and are easier to drive, being based on a monolithic structure. The leveling function of the machine body is entrusted to 4 hydraulic cylinders (one per wheel), which, together with the central hinging of the harvesting module, ensure effective vertical alignment of the harvesting head with the canopies, especially when driving in turn, with slopes of up to 25% and with crops that are irregular in alignment and width of vegetation. Traction is provided by 4 hydraulic motors (again, one per wheel), operated with variable oil flow rate to limit localized slippage. The harvesting unit Again, action is taken on the plants by shaking the crowns: the olives detached from the plant are intercepted and then conveyed into special hoppers. The shaking apparatus consists of braked rods of various conformations oscillating in the transverse axis. More specifically, braked rods (a solution adopted by New Holland) are preloaded, that is, each is rigidly hinged at one end, while the opposite end is connected to an eccentric that causes the rhythmic variation of the curvature, causing--according to the manufacturer's claim--a gentle release of the olives. Instead, the curved rods are usually P-shaped and hinged at both ends. The olives are then intercepted and conveyed using horizontal plastic bulkheads or baskets arranged in two continuously moving belts to the machine's rear, where a conveyor unit places the olives in hoppers. Each is equipped at the top with an auger that ensures uniform product distribution in the available volume. As an alternative to temporary storage on board, a "gooseneck" arm can be used to transfer the material to a tractordrawn trailer parallel to the harvesting machine. Finally, the hoppers are emptied into trailers for transfer to the mill. Lavinia Eleonora Galli Dalle tramogge le olive vengono trasferite in rimorchi per il trasferimento al frantoio Olives are moved from the hoppers into trailers for transfer to the mill