Tag Archives: 994K

New Cat 994K wheel loader improves ROM productivity at Batchfire’s Callide mine

Coal technology, Mine operation news, Mining equipment, Mining services, , , , , , , ,

Batchfire Resources says the arrival of a new Cat 994K wheel loader has brought with it a 150% improvement in material movement efficiency and reduced carbon footprint at its Callide coal mine in Queensland, Australia.

The operation recently retired its old Cat 994 after 100,000 hours of use, replacing it with a more efficient, safer, high-productivity Cat 994K.

The upgrade was made under Batchfire’s joint initiative with Hastings Deering to modernise its pre-strip mining fleet, future-proofing its operations with the latest technology.

The new 994K was customised with an oversized bucket, offering a 14 cu.m capacity, generating 150% more material movement without increasing carbon emissions, the company said.

Batchfire Resources Superintendent Mobile – Engineering and Maintenance, Daniel Boal, said: “There’s a huge difference in payload. It used to take us 10 buckets to load a Cat 789 truck on the run of mine. With the new 994K, we can do that in four.”

Batchfire has already seen a reduction in emissions, as well as a lower cost per tonne on the run of mine, despite the 994K featuring 500 horsepower (373 kW) more power than its predecessor. The unit also offers greatly improved operator comfort with its new high-cab design, air-suspended seat and lower noise emissions, the company says.

The 994K takes safety to another level at Callide, offering improved access, visibility and reducing tailpipe emissions – improving air quality and keeping the mine site safe, the company says.

Boal said the investment in new machinery ensured a more sustainable and efficient run of mine operation.

“On a ROM, what you need is a reliable loader, it’s probably one of the most critical parts of the mine,” he said. “We’ve got 500 hp more in the new 994, so we can do it quicker and more efficiently.

“This journey started in 1993. The old 994 has pretty much been in service the whole time. The way Caterpillar build things, they are made to last; they’re built for a long-term investment. It was an easy decision in the end to go for the new 994K loader.”

Enerpac EVO solution gives WesTrac and Cat 994K wheel loader a needed lift

Equipment maintenance, Mining equipment, Mining safety, Mining services, , , , , ,

Enerpac’s EVO synchronous lifting system has come to the rescue of WesTrac in Western Australia, with the Caterpillar dealer in need of an efficient, portable and safe solution to lift its Cat® 994K wheel loader.

The system needed to be operated independently without manual intervention and provide a locking function during the lift, according to Enerpac.

The 200 t Cat wheel loader had to be lifted to a height of 400-450 mm with an accuracy of +/- 2 mm across four lift points: a process carried out on uneven ground, which caused the lifting points to be at different heights. The lifting equipment needed to work independently to the pump and required forklift pockets so it could be manoeuvred into place easily, according to Enerpac.

Enerpac recommended its EVO synchronous lifting system, which, the company says, allows one device to control the entire lifting operation while providing status updates at every point of the process without the need for manual monitoring. By digitally monitoring and controlling lifting operations, users enhance safety and eliminate costly downtime, it says.

“Utilising proven synchronised lifting technology, combined with an expertise in high tonnage cylinder manufacturing, a customised Enerpac solution was developed to provide a high-precision lifting system to lift the Cat wheel loader on challenging ground conditions,” Enerpac explained.

Sanjesh Balgovind, Heavy Lifting Technology Special Projects Manager, Enerpac, said: “With an intuitive user interface, the custom EVO synchronous lifting system is easy to set up and control. It combines high pressure hydraulics and computer controls to monitor and control precise lifting and movement of heavy loads, such as WesTrac’s 200 t Cat wheel loader.”

Assembling and transporting over-dimension vehicles like the Cat wheel loader requires several steps, according to Balgovind.

“It often involves locating and positioning the lifting equipment at the appropriate lift points, removing the wheels, attaching wheel stands, and lowering the vehicle to the ground followed by removing the lifting equipment,” Balgovind says.

“Thereafter, a multi-wheel trailer would be placed under the vehicle and the wheel stands removed before it is ready for transportation. Using short stroke cylinders without synchronous lifting would be time-consuming, cumbersome and could introduce additional risk if the load is lifted at different heights.”

Through an integrated human machine interface, all movements are operated from a central control system displaying live operation and real time status updates of each lifting position. The Enerpac EVO system can deliver an accuracy of up to 1 mm across all lift points and provides stroke feedback and indicative load at each point, according to the company. In addition, there are built-in warning and stop alarms to ensure optimum safety.

The custom HCRL-Series 100-ton (91 t) 18 in stroke cylinders have servo motor-driven lock nuts that provide mechanical load holding across all lift points for a safe work environment, according to the company, while its hardened and robust surface is designed to resist side-loading and cyclic wear. The locknut drive controller is mounted on the cylinder and keeps the locking collar 3-6 mm from the cylinder body. The cylinders are then affixed in custom steel frames with lifting pockets.

The lifting frames are then placed at the respective lift points with forklifts and connected to a custom EVO-Series synchronous lifting system, ready for lifting. As the rear of the truck requires a higher lift point, the frames are further attached to stands for additional height. The cylinders are then placed at the respective lift points with forklifts and connected to the EVO system, ready for lifting. A flow of 3 litres per minute is used to ensure that the locking collar adjustment can keep up with cylinder extension and retraction.

“At a rate of 1 mm/s, the wheel loader is lifted with significant safety and productivity gains,” Balgovind says. “The auto-locking cylinders provide an improved safety application as the load is always mechanically locked during both lifting and lowering operations.

“It is a safe and effective solution for applications with potential safety risks of working with hydraulic-suspended loads. In addition, given the portability of the system, it was brought to site easily and could function in a convenient manner.”