Enerpac Synchronized Lift System
Synchronous Lifting System
Now For Rent
- Oil and Gas
- Power Generation
- Bridge Construction
- Ship Building
The main bearing on a Bardella iron ore reclaimer stacker needed to be replaced. Safely replacing the bearing without injury or damaging the stacker required lifting the 470 metric ton stacker approximately 400 mm (15.74 inches) while maintaining the machine’s center of gravity.
Vale Vitoria utilized a four point EVO Synchronous Lifting System and four hydraulic cylinders to lift and lower the stacker 400 mm. The EVO system provided the ability to synchronize and control each lifting point and monitor the load’s center of gravity from a touchscreen display interface. A centralized control unit allowed the maintenance team to perform the lifting and lowering operations from a safe distance of 30 meters from the load. In collaboration with Rotec Equipamentos, Vale Victoria was able to replace the stacker’s bearing without injury or damage, and within the scheduled timeframe.
The construction of the 4.5 km Waterview Connection motorway included the deployment of an Earth Pressure Balance Machine to bore a 2.5 km underground twin tunnel. Commencing the tunneling process required positioning the 3,600 ton tunnel boring machine into its starting position.
Ten 600 ton cylinders with internal stroke sensors controlled by the EVO synchronous lifting system lowered and tilted the tunnel boring machine into its starting position. Once positioned, the synchronous lift system pushed the machine a few meters forward to gain purchase and begin tunneling. After the length of the first tunnel is complete, the synchronous lifting system will be redeployed to lift and tilt the machine to complete the other parallel length of the twin tunnel, eventually arriving back at the starting point.
Optimum weight distribution is fundamental to the safety and ongoing reliability of a container crane. Accurately lifting, weighing, and positioning an 800 ton container crane on the rails is critical to achieving ideal weight distribution. Existing methods of lifting port cranes typically involve whole teams of lifting personnel manually coordinating lifts with a standard pump without stroke control or weighing capabilities. Such methods are typically not accurate in lifting and do not provide any input concerning weight distribution.
Aluminum hydraulic cylinders and an EVO synchronous lifting system were deployed to install the new Liebherr Super Post-Panamax crane. The EVO system’s integrated HMI (Human Machine Interface) provided real-time status updates and a central control position for managing each lifting point. The ability to precisely monitor and control the load from a central point improved the efficiently, time savings, and achieved ideal weight distribution
Replacing the slew bearing on the 40 year old (grain) ship loader required lifting the upper structure 300 mm to provide adequate clearance during replacement. Keeping the boom connected made it challenging to maintain the balance of the ship loader during the lift. Maintaining the center of gravity of the ship loader throughout the lift was critical.
A 12 point EVO Synchronous Lift System and CLRG and RR-Series cylinders were utilized to maintain the balance of the ship loader during the lifting and lowering operation. The EVO System’s ability to monitor the load and the center of gravity provided precision accuracy during the operation. In collaboration with Enerpac and Coates Hire, the ship loader was lifted and lowered safely in a timely manner.
The existing 90-year-old Johnson Street Bridge is located at the heart of Victoria, B.C. and is in the process of being replaced with a new bridge that will serve the community for the next 100 years. The new bridge is being built adjacent to the existing bridge, allowing the important transportation connection into Victoria’s downtown to remain open during construction. The new bridge design includes a 25 meter long by 20 meter wide bascule pier box which will house the mechanical and electrical componentry for opening and closing the bridge span across the marine harbor. The 1,100 ton bascule pier box is comprised of a steel and concrete caisson which needed to be lowered upon 16 large piers with tight precision.
PCL utilized a bar lowering method to evenly lower the caisson into its final position on the piers. Enerpac provided 32 CLSG high tonnage hydraulic cylinders and 3 EVO synchronous lifting systems. All three EVO systems were networked together which enabled a single operator to control all 32 points from a master control user interface. At each pier were two independently controlled hydraulic jacks providing precision lowering of the caisson. Utilizing the Enerpac EVO system in tandem with the bar lowering method, PCL was able to improve accuracy, productivity, and efficiency thus completing the caisson lowering and leveling in 3 working days.
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