Methods of shifting heavy and/or loaded structures
OwnerNils Harald Ahlgreninventor
Life of this patent
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Abstract
Apparatus for shifting heavy supporting structures relative to stationary load carrying structures comprises a plurality of parallel jack rods secured to the load carrying structure. A plurality of climbing jacks adapted to operatively engage the jack rods are secured to the heavy supporting structure. The arrangement is such that the heavy supporting structure is shifted relative to the load carrying structure when the climbing jacks are operated and advance along the jack rods while the load carrying structure remains stationary. The reactive forces caused by the operation of the climbing jacks is transferred to the load carrying structure by the jack rods. A method for shifting heavy supporting structures is also disclosed.
Claims5
A method for shifting a heavy supporting structure used with a load carrying structure which remains stationary relative to shifting movements of said heavy supporting structure, a plurality of jack rods being carried by said load carrying structure and being secured against relative motion with respect thereto, said heavy supporting structure supporting said load carrying structure in a manner such that said heavy supporting structure is slideable relative to said load carrying structure, a plurality of climbing jacks being secured to said heavy supporting structure, said climbing jacks being adapted to operatively engage said jack rods;
- said method comprising simultaneously operating said plurality of climbing jacks so that said climbing jacks move along said jack rods thereby sliding said heavy supporting structure relative to said load carrying structure which remains stationary, the reactive force in said jack rods caused by the operation of said climbing jacks being transferred to said load carrying structure by said jack rods.
Dependencies are inferred from the claim text.