Sunday 26th May, 2019

Using hydraulic tools for the heavy lifting

Hydraulic tool technology specialist Enerpac has introduced to Australia, New Zealand and Papua New Guinea a range of hydraulic pumps and lifting equipment that is ideal for jobs that require a combination of portability, speed and safety.

Resources and infrastructure

industries present some of the most challenging heavy lifts, because of the large and sometimes irregularly shaped loads that must be balanced and positioned safely and time-efficiently.

The towers, tanks, turbines, transformers, crushers, conveyors, mills and process infrastructure involved in project development and maintenance all need to be lifted and shifted with considerable care – yet with the minimum delay feasible to ensure multi-billion-dollar projects proceed without the huge costs associated with delay.

Two of Enerpac Heavy Lifting Technology’s time-saving solutions employed in such applications include the SFP-Series split flow pumps; and the EVO-Series PLC-controlled synchronous lifting systems.

The latest SFP-Series electrically driven 700 bar split flow pumps are an ideal solution for lifting applications with multiple lift points where lifting synchronisation of a maximum ± 4% is appropriate to ensure safety of the job. Where such limits are appropriate, the SFP-Series split flow pumps are a safe and economical solution to ensure load is evenly distributed over the lifting points, says Enerpac.

The load can be lifted simultaneously using single or double-acting cylinders. Depending on the application, the lifting points can be operated individually or simultaneously.

For even more precise lifts, split flow pumps are complemented by the PLC-controlled EVO-Series Synchronous Lifting Systems, by which one person can safely control multiple cylinders from a single point.

These systems link to Enerpac high-tonnage cylinders using stroke sensors’ signals for synchronised lifting and lowering of multiple lifting points.

Depending on the model and sophistication required, EVO systems can extend from EVO B units – with pumps controlling 4 or 8 lifting points – through to custom-engineered systems governing scores of cylinders with total lifting capacities of thousands of tonnes.

Toughest-yet heavy tonnage cylinders

New generation Enerpac high-tonnage cylinders are engineered to meet demand for heavy lifts in some of the harshest environments.

Enerpac’s Summit Edition HTC models – in standard capacities from 50-1000 tonnes – are designed to provide optimum reliability, durability, cost-efficiency and safety for industries and far-flung projects that cannot afford downtime as operations staff work to complete projects within demanding time frames.

Summit Edition cylinders are particularly suited to industries including mining and energy, onshore and offshore oil and gas, construction and infrastructure, bridges and pipeline plant, heavy manufacturing, materials handling, process engineering and maintenance across diverse industries.

New HTC engineering incorporated into the cylinders includes advanced bearing and sealing technology to extend the boundaries for eccentric loads, while reducing cylinder maintenance intervals, says Enerpac national sales manager Darryl Lange.

“The effects of corrosion and scoring are no longer a concern with the Summit ranges because of the cylinders’ black nitrocarburization surface treatment for improved load and wear resistance, plus corrosion protection.”

Summit Edition cylinders are also highly compatible with Enerpac’s PLC-controlled synch-ronous lifting systems, which simultaneously control multiple cylinders used to precisely lift, shift, balance and position structures sometimes weighing many thousands of tonnes.

“Safety has long been a major feature of Enerpac cylinder designs, and these cylinders lift our outstanding safety record further,” says Mr Lange.

Enerpac split-flow pumps were used in Australia to lift and lower into place large conveyor sections, achieving far more efficient installation procedures.
Enerpac split-flow pumps were used in Australia to lift and lower into place large conveyor sections, achieving far more efficient installation procedures.

Quiet, environmentally harmonious pumps

“These advanced technology pumps – with impressive run times and national service backing from Enerpac – are among the first of a stream of high-technology products Enerpac is introducing to save users time and money,” says Enerpac engineer Tony Cooper, who is Asia-Pacific marketing manager responsible for introducing the new ZC-Series to the region.

He says the technology is a high-flow cordless solution with an 8-litre reservoir capacity, 0.52l/min flow at rated pressure and reduced noise level of 80 dB a maximum. The pumps are designed to handle, for example, 50 lifting cycles with an RC1006 95-tonne cylinder, or 90 cycles of the equally widely used RC504 cylinder on a single charge.

ZCs save users time and money by eliminating the need for a generator and extension cords. The brushless 1.0 kW (1.4 hp) motor and 3-stage pumps maximise pump and tool productivity while minimising heat build-up and downtime. Safety of the pump is enhanced by a 3m pendant cord for hassle-free operation.

The 700 bar (10,000psi) ZC Series pumps combine the performance of an electric pump with the convenience, portability and stumble-free safety of a battery pump that is ideal for applications where emissions and noise are concerns.

The new generation cordless pumps – featuring a rechargeable 82V lithium ion battery with long run times, even under extreme site conditions – work well in remote locations where there is no access to power, as well as indoor uses where trip hazards, ergonomics or size are a concern.

Available in single-acting, double-acting and Power Seater Post Tensioning models (weighing 29.7-33.3kg), the pumps provide a high-flow cordless solution for a range of applications. These may include lifting, shifting, cutting, pressing, gear pulling and other workshop maintenance tasks; foundation work; post-tensioning and rail, road, civil engineering and infrastructure development on sites as diverse as mining and energy, construction, oil and gas exploration and development; water and pipeline projects