An Enerpac EVO synchronous lifting system was used by G&S
Engineering for the complex task of accurately lifting and positioning
components of a 515t stacker reclaimer during a maintenance operation at the
Clermont Mine in the Bowen Basin, Queensland.
A precision engineering company based in Queensland, G&S Engineering
is committed to safety, quality and customer satisfaction. The latest version
of the Enerpac EVO system gave G&S the capability to smoothly manoeuvre the
load vertically and horizontally using one system to control the entire load.
The stacker reclaimer had to be jacked apart from the portal frame while
balancing a 60m boom in order to replace the centre bearing. With such a long
boom, it was important for the slew deck to remain balanced throughout the
operation. An Enerpac EVO system with three CLRG 250t cylinders was used to
safely handle the weight.
According to Mr Steve Gordon, Shutdowns Project Manager for G&S
Engineering, the EVO system enabled them to set the load limits for individual
jacking points as well as identify the centre of gravity. Using the minimum
flow rate available to provide extremely smooth movements, they were able to
avoid bobbing at the end of the boom, which ensured that the loads on the
jacking points remained constant.
Mr Gordon adds that the system also provides controlled movements within
the parameters set onsite, giving the operator confidence that he is not
outside any of the engineering loads or limits during the jacking operations.
Enerpac’s multifunctional EVO-Series synchronous lifting systems can be
used with multiple standard 700 bar single- or double-acting cylinders and are offered
with a 5 HP or 10 HP hydraulic power unit featuring a 250-litre reservoir.
The EVO-Series system 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.
Mr Gordon was also appreciative of the technical
support received from Enerpac, which included assistance in certifying the CLGR
250t cylinders to take the load on the cylinder wall, enabling a horse shoe
style ram packer to be used and saving them time in obtaining an independent