Arrangement for effecting uniform load distrubution on climbing jacks

Claim 2

Arrangement for a uniform load distribution at a group of cooperating climbing jacks, in which each climbing jack in the group acts on a separate, smooth climb rod, and each climbing jack in the group including a load transferring base, a stepwise lifting means, said lifting means being connected to said base by at least one continuously acting hydraulic balancing jack transferring the load and comprising a hydraulic pressure cylinder, and means hydraulically interconnecting the pressure cylinders of the balancing jacks connected to the climbing jacks of said group.

Claim 3

The arrangement according to claim 1, characterized in that at least two balancing jacks are disposed symmetrically in relation to the respective climb rod.

Claim 4

The arrangement according to claim 1 including a load carrier with respect to which the load is lifted or lowered, said climbing jacks being supported on the balancing jacks, and said balancing jacks being supported on the load carrier.

Claim 5

The arrangement according to claim 1, including a load carrier with respect to which the load is lifted or lowered, a load support for the load, a carrier member connected with and disposed above the load support, and said climbing jacks and balancing jacks being mounted on the carrier member.

Claim 6

The arrangement according to claim 1 including a load carrier with respect to which the load is lifted or lowered, a load support for the load, said climbing jacks being connected with the load support and said balancing jacks being connected with the load carrier.

Claim 7

An arrangement for a uniform load distribution at a group of cooperating climbing jacks in which each jack in the group acts on a separate, smooth climb rod, and each climbing jack in the group has at least one load transferring means operably connected thereto, a load carrier with respect to which the load is lifted or lowered, each climbing jack including upper and lower heads, grip means for the rod carried by each head, a pair of cylinders mounted on the upper head, a piston movable in each cylinder, each piston having a piston rod mounted on the lower head, a return spring within each cylinder cooperable with the piston and cylinder, a source of pressure fluid, conduit means leading to each cylinder and said source, said load transferring means being defined by a balancing jack including a pair of cylinders mounted on the lower gripping head of the climbing jack, a piston slidably mounted in each cylinder, a load transferring base on the load carrier, each piston having a piston rod mounted on said load transferring base, a return spring for each piston within each cylinder cooperable with the piston and cylinder, conduit means interconnecting the cylinders of the balancing jacks connected to the climbing jacks of said group and stop valves in the conduit means.

Claim 8

An arrangement for a uniform load distribution at a group of cooperating climbing jacks in which each jack in the group acts on a separate, smooth climb rod, and each climbing jack in the group has at least one load transferring means operably connected thereto, a load carrier with respect to which the load is lifted or lowered, each climbing jack including upper and lower heads, grip means for the rod carried by each head, a pair of cylinders mounted on the upper head, a piston movable in each cylinder, each piston having a piston rod mounted on the lower head, a return spring within each cylinder cooperable with the piston and cylinder, a source of pressure fluid, conduit means leading to each cylinder and said source, said load transferring means being defined by a balancing jack including a pair of cylinders mounted on the lower gripping head of the climbing jack, a piston slidably mounted in each cylinder, a load transferring base on the load carrier, each piston having a piston rod mounted on said load transferring base, a return spring for each piston within each cylinder cooperable with the piston and cylinder, conduit means interconnecting the cylinders of the balancing jacks connected to the climbing jacks of said group and stop valves in the conduit means.