Hydraulic jacking system

Simple and economical hydraulic jacking system


Technical data for 12 t hydraulic jacking system

1.pump station

Maximum pressure:25MPa


Rated oil flow:60L/min

Motor rotate speed:1470r/min

oil tank capacity:360L

System temperature :20-60ºC

oil filter precision:20υm


System oil type:L-HM46# antiwear hydraulic oil

Total weight:360Kg

Outsize(mm): 1100*750*1000


theory lifting capacity:125KN

Rated lift capacity:120KN

rated oil pressure:12MPa

Hydraulic stroke:100±0.5mm

Glissade capacity:≤5mm


Installation size for up and down chuck: settle 3 *14U hole on the circumference of a φ120 circle


Suitable lifting rod:φ30round steel(45#)

chuck device: screw mechanism

 3.Jack support

Total height:4460mm (will be confirmed after design)

Lifting rod height:3900mm

Slider stroke:3630mm (will be confirmed after design)

distance between expansion loop support to ground:310mm

Principle of the 12t hydraulic jacks system

Principle of the erection system
The following short description gives the working procedure in outline. It can in certain details be modified when required.
Step 1. The tank bottom - plates are placed on the prepared foundation and welded together.
Step 2. The beams or lattice work of the roof are assembled and finally joined to the upper rim of the shell ring. 
Step 3. The jacking equipment is installed in the tank. The plates of the second shell ring (next to the top ring) are positioned outside the first one.
Step 4. The completed part of the tank (roof and top shell ring) is lifted hydraulically to a height at which the plates of the second ring can be moved into place and the roof sheeting can be completed.
Step 5. The plates of the second shell ring are located exactly and welded together to the lower edge of the first ring.
Step 6. The plates of the third shell ring are placed outside the second shell ring.
Step 7. The completed part of the tank (roof the two uppermost shell rings) is lifted.
Step 8. The above cycle of operations is repeated until the last (bottom) shell ring is finished.
Step 9. The entire tank is lowered down to the bottom plate and welded to this.
Step 10. The lifting equipment is dismantled.