Liebherr has a range of machines for quarries. Image: Liebherr
Liebherr’s wide range of machinery enables it to meet all the challenges a quarry can face while delivering productivity and efficiency.
Liebherr has designed a range of modern, economical, and efficient machinery by balancing the quarry industry’s power requirements with technological advancements.
The company’s ability to produce innovative designs and major componentry in-house has led to the creation of crawler excavators, wheel loaders, articulated dump trucks and dozers.
Quarry looks at the key machines within the Liebherr machinery portfolio that make a difference to the quarry industry.
Made for big things – the Liebherr XPower wheel loaders
Liebherr’s L 550 XPower – L 586 XPower wheel loaders are ideal for high capacity handling.
Liebherr-XPower is a complete, innovative machine concept that sets new standards in terms of fuel efficiency, power, robustness and comfort. The power-split travel drive combines the hydrostatic drive, which is optimal for short loading cycles, with the mechanical drive, the advantages of which come to the fore when driving long distances and also driving uphill.
The XPower range is designed to achieve machine efficiency and productivity across all terrains and distances. Fundamental to this is the Liebherr-XPower driveline and Liebherr-Power-Efficiency. According to Liebherr’s data, the combination of these two features results in up to 30 per cent less fuel consumption. At maximum handling capacity this reduces a quarry’s operating costs and improves their productivity and profits.
The modern ergonomic cab design provides the operator with maximum comfort enabling him to concentrate on accurate operation for whole working period, which once again means more safety and productivity. The Liebherr control lever, which is built into the operator’s seat as standard, allows precise and sensitive control of the machine.
Liebherr Articulated dump truck TA 230. Image: Liebherr
Liebherr Articulated dump truck TA 230 – Powerful, robust and efficient
The TA 230 is one of the latest articulated dump trucks from Liebherr. This powerful all-terrain machine is specially designed for efficient use in the quarrying industry and for overburden transport. It was subjected to Liebherr’s rigorous testing, including test trials, to ensure the componentry and parts met the company’s high standards.
The model features a powerful drivetrain, reliable traction control, and solid axle suspension, which allows it to handle any terrain. The machine can remove up to 28 tonnes of material per loading operation with a maximum dump box capacity of 18.1 m³. Under the bonnet, a 6-cylinder construction machinery engine with 12 litres displacement and 265 kW / 360 hp capably does its job. The machine has a top speed of up to 57 km/h in forward travel and up to 16 km/h in reverse. Since the machine will be largely exposed to abrasive materials in punishing quarry applications, Liebherr offers optional equipment to minimise wear and tear and extend the vehicle’s service life.
The six-cylinder Liebherr construction engine is emissions Tier 4 Final, while meeting modern specifications, the Liebherr D956 engine achieves power and efficiency.
Operator wellbeing is front of mind for Liebherr, which is why the TA 230 is equipped with spacious cab, various storage areas, clearly and intuitively arranged control elements, as well as staggered steps and a generous driver’s door. Liebherr shock absorbers on the front axle and the viscoelastic suspension on the cab also optimally absorb the vibrations that occur in tough quarry operations, thereby increasing driving comfort. The soundproofed operator’s cab reduces the interior noise level to just 72 dB(A).
More importantly, the lighting and visibility concept of the TA 230 ensures optimum visibility and safety – both for the machine operator and for anyone working nearby. Thanks to the excellent all-round glazing without blind-spot-inducing pillars and the short, sloping engine bonnet, the machine operator always has an optimum view of the machine’s driving, working and articulation areas from the operator’s cab. A rear camera is integrated into the touch display, providing a clear view of the area behind the vehicle.
The travel path and working area are illuminated by LED low beam headlights with integrated high beam and extra powerful LED headlights on the front of the cab. This innovative lighting concept creates optimal conditions for working in the dark. At the same time, it ensures that the machine is always clearly visible to everyone else on the construction site. The lighting at the rear of the body and another light package on the mud guards ensure optimum illumination of the manoeuvring areas at night.
Liebherr offers numerous, modern driver assistance systems that support the machine operator and thus increase productivity and safety. For example, the innovative weighing device, which is installed as standard, records the loaded weight in real time. During the loading process, the current payload is shown on the display in the operator’s cab, and all collected data is displayed in LiDAT, Liebherr’s data transmission and location system.
With the weighing device, optimal loading of the machine can always be ensured, its productivity measured and at the same time overloading of the machine components can be prevented. In addition, the speed maintenance assistant, also fitted as standard, limits the truck’s maximum travel speed. Activated via a button on the retarder lever, the system monitors the current speed when the accelerator is pressed and automatically adjusts it to the set value. When driving downhill, the vehicle decelerates automatically using the engine brake and retarder. The standard Hill Start Assist intelligently regulates the starting torque and thus eliminates the risk of rolling backwards on slopes.
Opening up new horizons: Liebherr Dozers
In an industry that deals with harsh and heavy rock, using a dozer with high penetration and force can be a game-changer. The PR 756, PR 766 and PR 776 are the headline dozers from Liebherr to meet the industry’s requirements.
Designed for a range of applications, from powerful ripping excavation to shifting heavy material, Liebherr’s dozers balance performance and economy.
The PR 756, PR 766, and PR 776 have operating weights of 40, 50, and 70 tonnes and a hydrostatic drive designed to deliver the engine force required to get material loose and moving without slippage.
The dozers use Liebherr’s latest diesel engine technology. The engine’s low speed ensures fuel savings and a longer uptime even in the harshest working environments. The hydrostatically driven cooling fan and separate hydraulic oil cooler help provide reliable engine cooling and reduce needless fuel consumption wasted in extended warm-up and cooling situations.
The cabin is integrated with a roll-over protection system and falling object protective structure protection to maximise worker safety while operating in the quarry. Its spacious design provides the operator with an all-around view of the work site, which provides peace of mind during the work day.
Powerful, efficient, high-performance: Liebherr large crawler excavators
Liebherr designs its excavators based on one key principle: to maximise power while improving the efficiency of individual parts, ensuring optimum serviceability and minimum downtimes for machines.For Liebherr, protection of the environment is one of its guiding principles for a long time. Environmentally-configured power regulation of the hydraulic system and engine performance optimises the fuel efficiency of the machine to match the quarrying application. The automatic idling system reduces engine speed when the machine is stationary, and if less power is required, “eco mode” can be selected on the control panel to reduce the engine load, further improving the fuel efficiency and reducing CO₂ emissions.
Liebherr’s reputation for providing robust and reliable components is fundamental to the company’s fulfilment of this principle.
The stick and bucket cylinders, which provide a higher breakout and digging force, are reinforced with internal protection, which results in a longer service life.
Liebherr excavators can be serviced from one side, with easy access to the key service points, ensuring more time is spent in the quarry than on maintenance. •
For more information, visit liebherr.com.au
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