Tank Jacking Equipment's

Also known as hydraulic lifting jacks, tank lifting jacks, tank jacking equipments, tank erection equipments or tank lifting hydraulic system
Our manufacturing plant is in India. Each machine is quality checked and performance tested and carefully packed. We believe in first class customer service and are committed to building life-long relationship with customers.

Working principle of jack (Tank Jacking Equipments)

Basically the jack climbs up on the jack rod (which is a part of the lifting trestle) like a monkey climbs up a tree trunk, i.e, first it holds on to the trunk with its legs and lunges upwards, then it holds on to the trunk with its hands and lifts its legs up. At any time, either its hands or legs have a grip on the trunk which prevents it from falling down. Similarly, the jack has two pairs of grip jaws, a lower pair of jaws and an upper pair of jaws. During lifting, both the pairs are in “locked” position. In this position the jack can move only upwards. During lifting, the lower pair of jaws grips the trestle rod while the jack lifts up. After making the full stroke, the upper pair of jaws grips the trestle rod while the base of the jack travels upwards. During lowering, any one of the pairs is engaged or locked.

Description of principle of the tank jacking / erection system

Refer drawings CC-1 and CC-2 below :

  • The following short description gives the working procedure in outline. It can in certain details be modified when required.
  • The tank botton-plates are placed on the prepared foundation and welded together.
  • The beams or lattice work of the roof are assembled and finally joined to the upper rim of the shell ring. Possible the inner sheets of the roof are placed and welded together.
  • The lifting equipments is assembled according to Chapters 10 and 13. The plates of the second shell ring (next to top ring) are positioned outside the first one.
  • The plates of the second shell ring are located exactly and welded together to the lower edge of the first shell ring.

Determining the number of jacks to be used for any tank :

The number of trestle required for a tank is settled by :

  • The maximum weight of the tank. The vertical load is max 8, 12 or 25 ton per trestle, depending upon the type of tank jacking equipments selected.
  • The maximum wind load on the trestles.
  • The maximum distance between the lifting points in the shell with regard to the stability of shell.
  • The normal maximum distance between the trestles is 3 mtrs.
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