Patent ID: 6871667

Claim:
A distribution device for dense substances, especially concrete, said distribution device comprising: a distribution boom ( 1 ) carrying a concrete-conveyance conduit ( 17 ), said distribution boom having at least one telescopic boom section ( 4 ) having a first telescope component ( 5 ) and a second telescope component, ( 6 ) said second telescopic component being extendable with respect to said first telescope component; and at least one reinforcement beam ( 24 ) arranged on one of said first and second telescope components said at least one reinforcement beam carrying a section of the concrete-conveyance conduit; said section of concrete-conveyance conduit in the region of said telescopic boom section comprising a flexible hose having a compensation loop to accommodate the extension movement of the telescopic boom section, said compensation loop having at least one scissor-type conduit assembly ( 18 ) having two swivel elements ( 19 , 20 ) connected to each other in such a manner that the swivel elements in the two terminal positions of the telescopic boom section ( 4 ) are substantially arranged in a crossover position and, articulated joints ( 21 , 22 ) that interconnect them, said articulated joints moving past each other during the extension and retraction of the telescopic boom section, and a reinforcement beam ( 24 ) carrying a section of the concrete-conveyance conduit in the region of the telescopic boom section, ( 4 ) said reinforcing beam having one of its ends connected to said second telescope component ( 6 ) and its other end connected to said first telescope component ( 5 ) that is relatively immobile with respect to said second telescope component.