First publishedin Aggregates Business Europe
ADTs have replaced the use of rigid haulers at Linhay Hill Quarry
The versatility of articulated trucks, along with availability of larger machines, means they are gaining ground on rigid alternatives. Claire Symes reports
Glendinning's Linhay Hill Quarry used to operate a fleet of rigid dump trucks (RDTs), but over the last year the fleet has gradually been replaced by smaller articulated machines. The UK-based quarry operator initially trialled one 40 tonne articulated dump truck (ADT) but has now ordered a second for the site near Ashburton, Devon.
"We wanted to see if 40tonne ADTs could replace our fleet of 50tonne rigids," explained Linhay Hill Quarry supervisor Reg Perrow. "Having operated Volvo
A35's for a while primarily on overburden removal and moving material around the stock piles, we were reasonably confident about Volvo's larger truck for hauling from the face and are pleased to say it passes the test here at Linhay." The two Volvo A40 machines will replace the quarry's Euclid R50 and R60 trucks and become the prime haulers in producing 500000tonnes of limestone per year from the site.
But Linhay is not an isolated case, more and more quarries are opting for ADTs to replace RDTs because they offer greater versatility.
"RDTs are still the best for long hauls with good conditions, particularly if the material is very hard or in large blocks. The choice also depends on the material - for sand and gravel deposits which are generally lighter than blasted rock, then an ADT is better suited to the hauling task," said Caterpillar
ADT marketing product specialist Robert Macintyre. "But looking at each quarry there are always site specific features that dictate the design of the site and there are a lot of quarries that operate with poor traction or steep haul roads where ADTs are better than RDTs."
According to Terex
global products manager articulated trucks George McNeil, the trend towards ADTs has emerged in the last five years. "There has been a general move towards increasing the size of the machines they use and opting for 35 to 40tonne ADTs, in general," he said.
The versatility of ADTs for every stage of quarry operation is the key to their popularity
Sites with steep haul roads are ideal ground for articulated machines