PJ250
4Pages

Catalog excerpts

sarens group www.sarens.com CLIMBING SYSTEM PJ 250 The Perpetuum jack 250Te is made up of: • Jacking cylinder with bottom plate • Elements each have a height of 100 mm. • Steel base plate 50mm

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CLIMBING SYSTEM PJ 250 Werking Fonctionnement Operation Betrieb • Phase 1: The minimal height of the jack is 393mm. The jack is placed on a load spreading plate with a thickness of 50mm. The cylinder is retracted, the load is transferred via the top of the cylinder to the 4 connection plates on the bottom of the PJ jack. The jacking cylinder don’t take any load at this instance. The total length is now: 443mm (50mm plate + 393mm jack) • Phase 2: The jacking cylinder is energised; thus extending its ram, pushing up the jack & transferring the load through the cylinder. The maximum jack...

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CLIMBING SYSTEM PJ 250 Werking Fonctionnement Operation Betrieb • Phase 5: The jacking cylinder is energised; thus extending its cylinder and pushing up the jack & transferring the load through the cylinder. In this phase the item being jacked up a little more than 100 mm. • Phase 6: Two new elements are placed perpendicular on the previous layer manually. The new elements on the second can be secured to the element below with 12 bolts in extreme conditions. The position of the newly placed elements to the jack and the previous layer is fixated by a pin and a hole on each element. The total...

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CLIMBING SYSTEM PJ 250 Werking Fonctionnement Operation Betrieb Working security: Each jacking cylinder is connected, via a safety valve, counterbalance valve (hose rupture protection) and hydraulic hoses, to a constant displacement jacking pump which can be either diesel or electrically driven. The pump discharges the same volume of oil to each jacking cylinder, irrespective of load, which ensures that each jacking cylinder extends at the same speed, regardless of pressure. Therefore, the item being jacked up will be lifted (or lowered if jacking down) simultaneously by all the jacking...

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