Rotary distributor for thick matter

Abstract

A rotary distributor for thick matter, in particular for fresh concrete, has a load-bearing framework, which can be set down on a set-down surface, has a first extension-arm tube, which is arranged on the load-bearing framework such that it can be rotated about a framework-mounted vertical axis in the region of its inlet end, and has a second extension-arm tube, which is arranged such that it can be pivoted about a horizontal pivot axis in the region of the outlet end of the first extension-arm tube and communicates with the first extension-arm tube. The first extension-arm tube, in the region of its inlet end, can be pivoted, in addition, about a horizontal axis in relation to the load-bearing framework, and the second extension-arm tube can be rotated, in addition, about an axis of rotation, which is perpendicular to the horizontal pivot axis, in relation to the outlet end of the first extension-arm tube. Parallel-guidance devices are also provided between the first and the second extension-arm tubes to ensure that the second extension-arm tube, in different pivoting positions of the first extension-arm tube, is maintained in an alignment substantially parallel to the set-down surface.

1 - 12 . (canceled) 
     
     
         13 : A rotary distributor for thick matter, in particular for fresh concrete, with a supporting frame ( 14 ) which is mountable on a mounting surface ( 18 ), with a first extension arm tube ( 26 ) which is arranged in the region of the inlet-side end ( 22 ) thereof on the supporting frame ( 14 ) so as to be rotatable about a frame-mounted vertical axis ( 24 ) and is charged under pressure there with the thick matter and through which the thick matter flows, and with a second extension arm tube ( 30 ) which is arranged in the region of the outlet-side end ( 25 ) of the first extension arm tube ( 26 ) so as to be pivotable about a horizontal pivot axis, communicates hydraulically with the first extension arm tube ( 26 ) and through which the thick matter flows, wherein the first extension arm tube ( 26 ) is additionally pivotable in the region of the inlet-side end ( 22 ) thereof about a horizontal axis ( 32 ) in relation to the supporting frame ( 14 ), wherein the first extension arm tube ( 26 ) is connected to a frame-mounted tube length ( 52 ) via at least two tube bends ( 48 ) and a corresponding number of tube couplings ( 50 ), wherein two of the tube couplings ( 50 ) are configured as rotary couplings ( 50 ′,  50 ″) with axes of rotation ( 24 ,  32 ) which are aligned perpendicular to each other, and wherein one of said two rotary couplings ( 50 ′) forms the vertical axis ( 24 ), and the other of said two rotary couplings ( 50 ″) forms the horizontal axis ( 32 ), of the first extension arm tube ( 26 ) in relation to the supporting frame ( 14 ), wherein the second extension arm tube ( 30 ) is additionally rotatable about an axis of rotation ( 34 ), which is perpendicular to the horizontal pivot axis ( 28 ), in relation to the outlet-side end ( 25 ) of the first extension arm tube ( 26 ), and wherein parallel guide means ( 36 ) are arranged between the first and the second extension arm tube ( 26 ,  30 ), which parallel guide means hold the axis of rotation ( 34 ) of the second extension arm tube ( 30 ), which axis of rotation is perpendicular to the horizontal pivot axis ( 28 ), in an alignment parallel to the frame-mounted vertical axis ( 24 ) in different pivoting positions of the first extension arm tube ( 26 ). 
     
     
         14 : The rotary distributor as claimed in  claim 13 , wherein the parallel guide means ( 36 ) which are arranged between the first and the second extension arm tube ( 26 ,  30 ) hold the second extension arm tube ( 30 ) in an alignment which is substantially perpendicular to the frame-mounted vertical axis in different pivoted positions of the first extension arm tube ( 26 ). 
     
     
         15 : The rotary distributor as claimed in  claim 13 , wherein the parallel guide means ( 36 ) have a web ( 38 ) aligned parallel to the frame-mounted vertical axis ( 24 ), and a coupler ( 40 ) of a four-bar linkage mechanism in the manner of a double crank, which coupler is aligned parallel to the axis of rotation ( 34 ) of the second extension arm tube ( 30 ), which axis of rotation is arranged at the outlet-side end ( 25 ) of the first extension arm tube ( 26 ), and wherein the second extension arm tube ( 30 ) is aligned substantially perpendicular to the coupler ( 40 ) of the four-bar linkage mechanism. 
     
     
         16 : The rotary distributor as claimed in  claim 13 , wherein the second extension arm tube ( 30 ) is connected at the inlet-side end ( 54 ) thereof to the outlet-side end ( 25 ) of the first extension arm tube ( 26 ) via at least two tube bends ( 56 ) and a corresponding number of tube couplings ( 58 ), wherein two of the tube couplings are configured as rotary couplings ( 58 ′) with axes of rotation ( 28 ,  34 ) aligned perpendicular to each other. 
     
     
         17 : The rotary distributor as claimed in  claim 16 , wherein one of the relevant rotary couplings ( 58 ′) forms the horizontal pivot axis ( 28 ) and the other of the relevant rotary couplings ( 58 ″) forms the axis of rotation ( 34 ), which is perpendicular with respect to said pivot axis, between the first and the second extension arm tube ( 26 ,  30 ). 
     
     
         18 : The rotary distributor as claimed in  claim 13 , wherein a ballast extension arm ( 60 ) which rotates together with the first extension arm tube ( 26 ) about the frame-mounted vertical axis ( 24 ) is arranged in the region of the inlet-side end ( 22 ) of said first extension arm tube ( 26 ). 
     
     
         19 : The rotary distributor as claimed in  claim 13 , wherein the first extension arm tube ( 26 ) is pivotable about the input-side horizontal axis ( 32 ) thereof by means of a lifting apparatus ( 62 ) with the second extension arm tube ( 30 ) being raised or lowered in relation to the supporting frame ( 14 ). 
     
     
         20 : The rotary distributor as claimed in  claim 19 , wherein the lifting apparatus ( 62 ) has a tensioning or tension member ( 64 ) which is clamped between the first extension arm tube ( 26 ) and the ballast extension arm ( 60 ) and is mechanically actuatable by the first extension arm tube ( 26 ) being pivoted about the horizontal axis ( 32 ) thereof. 
     
     
         21 : The rotary distributor as claimed in  claim 20 , wherein the lifting apparatus ( 62 ) has a lever ( 66 ) which is coupled to the ballast extension arm ( 60 ) or to the web ( 38 ) of the four-bar linkage mechanism, is movable via a drive mechanism ( 68 ) and the free lever end of which is connected to the first extension arm tube ( 26 ) via the tensioning or tension member ( 64 ). 
     
     
         22 : The rotary distributor as claimed in  claim 20 , wherein the lifting apparatus ( 62 ) has a two-armed lever ( 66 ) which is arranged on the ballast extension arm ( 60 ), and the load arm ( 66 ′) of which is connected to the first extension arm tube ( 26 ) via the tensioning or tension member ( 64 ) and the force arm ( 66 ″) of which is coupled to a drive mechanism ( 68 ) which is supported on the ballast extension arm ( 60 ) and is preferably configured as a hydraulic cylinder.