System  
The RMS Push-Up System

– LIFTING MADE SAFE AND FLEXIBLE
The RMS Push-Up System provides the unique opportunity of handling the very heaviest, indivisible loads safely and with flexibility, with maximum operational safety and precision, in temperatures down as low as -20C.

The system operates with 2-8 masts and is controlled completely from ground level. Between lifts the load rests in its entirety on lock plate above the jacks, an no part of the load is taken by the masts themselves. The positive locking device of the Push-Up System improves the precision of lifting as well as lowering, as compared with other, friction-sensetive systems.

One of the primary safety features of the system is that all operations take place on the ground, including maintanance and repair. The system does not require any personnel to be in the masts during lifting.

The masts bracing has been developed to provide even stress distribution, which simplifies both calculation and erection. The system can be braced completly from within the base area of the masts for lifts in tight situations.Lift height is maximized at 150 meters, with a lift rate of up to 8 meters per hour. The system can be used with masts that lift 600, 1200 or 2000 tonnes per section, i.e. a maximum of 8000 tonnes for a four-mast lift. The mast rig can also be moved horizontally in all directions by skidding.

1st movement
The jack is fully retracted, and the lock plate is pulled out of the climbing guide. A piston is fed into the climbing guide channel above the jack.(The jack head has a built-in safeguard that locates with lock grooves inside the climbing guide, 150 mm apart. In the the event of hydralic failure, all movement stops and the load is automatically locked.)
2nd movement
The jack is expanded to a full stroke. The lock plate is fed into the climbing guide, under the piston, with the load now resting on the lock plate.
3rd movement
As the jack retracts, the full load is carried by the lock plate. When the jack is fully retracted, yet another piston is inserted and the lock plate can be removed, and a new lifting phase can begin.
© rms lifting systems ab 2004