Shock and ore: tough and reliable drive systems get things moving

Paul Boughton

Tough and reliable drive systems get things moving

When building a materials handling or processing machine for mining the first requirements 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.

For design engineers, finding companies whose products can be trusted for such difficult conditions can prove to be time consuming and frustrating.

Brevini Power Transmission manufacturers of the PIV Posiplan hybrid gearbox, has shown that with the help of its sister company, Brevini Fluid Power, it is able to supply tough and reliable complete drive systems for moving and processing applications in the quarrying industry.

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 and waste processing industries.

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 its 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.

The gearbox for the main drive was a three-stage Posiplan BPH323 gearbox with an ISO6336 torque rating (T2ISO) of 15,100Nm and a reduction ratio of 58.82:1. The gearboxes for the chain and spinner drives all used three-stage Posiplan BPH313 gearboxes with torque ratings (T2ISO) of 3,900Nm and reduction ratios of 45.68:1. Combined respectively with Samhydraulik BR200 and BR080 orbit motors, the drives comfortably delivered the needed torque and speed required by the application.

Brevini's PIV Posiplan gearbox is a power transmission solution for many of the material handling applications found in quarrying and mining.

Video: The convenience of being able to drive large machines using small motors makes the gearbox the most rational, reliable, and economical way to transmit power



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