Load transmission device
A telescopic bar for load transmission which, if anchored in concrete slabs, creates a support between them, forming semi-rigid joints, and prevents differential settlement of the slabs, by enabling rotation in the vertical direction about a joint axis. The telescopic bar transmits a load from one slab to an adjacent slab, ensures perfect leveling of the slab surfaces, and enables removal and reuse of the slab at a later time. The telescopic bar may be used for constructing floors of easily manufactured prefabricated materials, and creates a new paradigm for the construction of roads, seaports, airports, railways, industrial areas, etc.
1. A telescopic bar ( 1 ) anchored in slabs, that creates a support between said slabs and forms semi-rigid joints, said telescopic bar ( 1 ) comprising
a sheath ( 2 ),
an anchoring arc ( 3 ) fixed to said sheath ( 2 ),
a rack ( 4 ) fixed to a surface of said telescopic bar ( 1 ),
a rotational key ( 9 ) inserted into an access chamber ( 6 ),
alignment and strengthening armatures ( 10 ), and
a transmission system from rotary motion into rectilinear motion, which moves said rack ( 4 ) and which is actionable from a slab surface by turning said rotational key ( 9 ), said transmission system further comprising a pinion ( 5 ) and an adjusting nut ( 7 );
wherein said telescopic bar ( 1 ) transmits a load between said slabs and prevents differential settlement of said slabs.
2. The telescopic bar ( 1 ) according to claim 1 , wherein said access chamber ( 6 ) is filled with a flexible material and is sealed at said slab surface.
3. The telescopic bar ( 1 ) according to claim 1 wherein said slabs are prefabricated concrete slabs.