Gearboxes drive huge X-ray machine in Middle East
A
Renold Gears product story
Edited by the Engineeringtalk editorial team
Apr 10, 2006
Huge plattons carrying driverless lorries through a giant X-ray machine glide smoothly across a series of wheels driven by gearboxes secured to spring-loaded base plates.
A company in the UK has designed and constructed a huge X-ray machine capable of scanning an entire articulated lorry, in one go, for a government in the Middle East.
The machine has been installed to increase efficiency at a border crossing by scanning entire lorries like suitcases at airport security points.
The machine increases the speed with which lorries are processed and eliminates the risk of error, which is inherent with manual security checks.
The driverless lorries are taken through the X-ray machine on plattons driven by a power transmission system designed by Renold Gears of Milnrow, Lancashire.
The huge plattons glide smoothly across a series of wheels driven by gearboxes secured to spring-loaded base plates.
The wheels are fitted with tyres to create the right degree of cushioning and friction with the plattons.
As the platton carrying the lorry moves from one set of wheels to the next, the weight of the lorry depresses the spring-loaded plate creating tension with the driving wheel sufficient to propel the platton forwards.
A long line of gearboxes takes each lorry from a start point, where the driver disembarks, through the machine and out the other side where the driver rejoins the vehicle and waits for security clearance to continue the journey.
The gearboxes had to be fitted in pits below ground with limited space so Renold's engineers selected PB50 and PB40 helical bevel helical gearboxes that provide high torque from a compact design.
A special case was designed for the gearboxes, which included removing the corner of the standard case to ensure they fitted into the limiting space of the pit.
Renold Gears also supplied the gearboxes that open and close the huge lead doors that protect security personnel from harmful radiation while lorries are being scanned inside the machine.
Simon McClean, Renold Gears Project Manager, said: "It was Renold Gears' ability to provide complete designs and supply within the given timescale that helped us to win this contract".
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