Tough and reliable drive systems

Paul Boughton

When building a materials handling or processing machine for the quarrying or mining industries the first requirements that come to mind are 'toughness' and 'durability'.

The machine's components must have the toughness to withstand the heavy and abrasive materials that are associated with these industries; as well as the durability to survive the shock loading, heavy workloads and harsh weather conditions they will be subjected to – especially in areas where maintenance access may be difficult.

Fortunately Brevini Power Transmission, manufacturers of the PIV Posiplan hybrid gearbox, supplies tough and reliable complete drive systems for moving and processing applications in the quarrying industry.[Page Break]

Brevini Power Transmission has been combining its technical competences and engineering abilities with Brevini Fluid Power for many years; the two companies providing high-strength and high-efficiency solutions for OE quarrying equipment builders and maintenance providers across Europe and the rest of the world. Recently a solution was designed and installed for material conveying and separating equipment built by Parnaby Cyclones, a UK manufacturer of equipment for the quarrying, coal mining industries.[Page Break]

The requirements from Parnaby Cyclones were for Brevini to provide a main drive to deliver a torque of 9,000Nm and output speed of 4.0rpm as well as two chain drives and a spinner drive that were each required to deliver a torque of 3,000Nm and output speeds of 4.0rpm for the separating process. A hydraulic power pack would also be required to feed pressure to individual hydraulic motors at each of the four gearboxes.

Brevini was able to supply four of their unique PIV Posiplan bevel planetary helical gear units each with a Samhydraulik motor and an 11kW 250L hydraulic power pack that included proportional control valves for PLC control. The overall lifetime of the package was calculated to exceed 50,000 hours.

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