Circular Distributor for Thick Materials, in Particular for Liquid Concrete
The invention relates to a circular distributor for thick materials, in particular for liquid concrete. The circular distributor comprises a support frame ( 10 ) mounted on a base ( 16 ), a frame-secured conveying pipe ( 24 ) which can be charged at an inlet end ( 26 ) with thick materials under pressure, a first pipe bend ( 30 ) coupled to the outlet end of the frame-secured conveying pipe ( 24 ), a second pipe bend ( 34 ) which, via a first articulated coupling ( 32 ), can be pivoted with respect to the first pipe bend ( 30 ) about a vertical axis ( 36 ) of the support frame ( 10 ), and a distributor pipe ( 44 ) connected to the second pipe bend ( 34 ), the outlet end of which distributor pipe has an outlet opening ( 48 ) for the thick materials. According to the invention, a third pipe bend ( 40 ) is arranged between the second pipe bend ( 34 ) and the distributor pipe ( 44 ), this third pipe bend being able to pivot on the second pipe bend ( 34 ) via a second articulated coupling ( 38 ) having a horizontal axis ( 46 ) which is perpendicular to the vertical axis ( 36 ) and being coupled to the distributor pipe ( 44 ) via a connector coupling ( 42 ).
1 . Circular distributor for thick substances, particularly for liquid concrete, having a support frame ( 10 ) that can be set up on a base ( 16 ), having a conveyor pipe ( 24 ) fixed in place on the frame, to which the thick substances can be applied under pressure, at an inlet-side end ( 26 ), having a first pipe bend ( 30 ) connected to the outlet-side end of the conveyor pipe ( 24 ) fixed in place on the frame, having a second pipe bend ( 34 ) that can be pivoted relative to the first pipe bend ( 30 ), at a first articulation coupling ( 32 ), about a vertical axis ( 36 ) of the support frame ( 10 ), and a distributor pipe ( 44 ) connected with the second pipe bend ( 34 ), whose outlet-side end has an exit opening ( 48 ) for the thick substances, wherein a third pipe bend ( 40 ) is disposed between the second pipe bend ( 34 ) and the distributor pipe ( 44 ), and is connected to the second pipe bend ( 34 ) by way of a second articulation coupling ( 38 ), so as to pivot about a horizontal axis ( 46 ) that is perpendicular to the vertical axis ( 36 ), and to the inlet-side end of the distributor pipe ( 44 ), by way of a connection coupling ( 42 ).
2 . Circular distributor according to claim 1 , wherein the connection coupling ( 42 ) is configured as a weld connection between the third pipe bend ( 40 ) and the distributor pipe ( 44 ).
3 . Circular distributor according to claim 1 , wherein the second articulation coupling ( 38 ) spans a plane ( 64 ) that is perpendicular to the horizontal axis ( 46 ), and intersects the plane of the first articulation coupling ( 32 ) and the plane of the connection coupling ( 42 ) in perpendicular and centered manner, in each instance, in the region of the coupling, in each instance.
4 . Circular distributor according to claim 1 , wherein a straight pipe piece ( 76 ) aligned with the outlet opening of the first pipe bend ( 30 ) and the connection opening ( 60 ) of the second pipe bend ( 34 ) is disposed between the first and the second pipe bend ( 30 , 34 ), which piece is connected with one of the two pipe bends ( 30 ) by way of the first articulation coupling ( 32 ).
5 . Circular distributor according to claim 4 , wherein the straight pipe piece ( 76 ) is connected with the second pipe bend ( 34 ), so as to rotate or rigidly.
6 . Circular distributor according to claim 4 , wherein the straight pipe piece ( 76 ) is connected with the first pipe bend ( 30 ) by way of the first articulation coupling ( 32 ), and with the second pipe bend ( 34 ) by way of a rigid connection coupling ( 78 ).
7 . Circular distributor according to claim 1 , wherein the second and the third pipe bend ( 30 , 34 ) each have a connection opening ( 60 , 80 ) and an articulation opening ( 62 , 82 ) perpendicular to the latter, whereby the articulation opening ( 62 , 82 ) spans a plane that intersects the connection opening ( 60 , 80 ) in the region of its center, in each instance.
8 . Circular distributor according to claim 7 , wherein a pipe elbow group ( 86 , 88 ) is disposed between the articulation opening ( 82 ) and the connection opening ( 80 ) of the third pipe bend ( 46 ), the center line ( 90 ) of which runs in a plane that intersects the articulation opening ( 82 ) and the connection opening ( 80 ) in the center.
9 . Circular distributor according to claim 7 , wherein the connection opening ( 60 ) of the second pipe bend ( 34 ) and the connection opening ( 80 ) of the third pipe bend ( 40 ) each span a plane that is oriented perpendicular to the plane spanned through the second articulation coupling ( 38 ), between the second and third pipe bend ( 30 , 34 ).
10 . Circular distributor according to claim 7 , wherein the plane spanned through the second articulation coupling ( 38 ), between the second and third pipe bend ( 30 , 34 ), intersects the connection opening ( 60 ) of the second pipe bend ( 34 ) and the connection opening ( 80 ) of the third pipe bend ( 40 ), in the region of the opening center, in each instance.
11 . Circular distributor according to claim 7 , wherein the third pipe bend ( 40 ) is composed of a 135° pipe elbow ( 86 ) that has the articulation opening ( 82 ), and a 45° pipe elbow ( 88 ) that has the connection opening ( 80 ), which lies in the same plane and runs in the opposite direction.
12 . Circular distributor according to claim 7 , wherein a pipe elbow group ( 66 , 68 ), the center line ( 70 ) of which spans planes that lie perpendicular to one another and intersect the articulation opening ( 62 ) and the connection opening ( 60 ) in the center, in an articulation-side section ( 70 ′) and a connection-side section ( 70 ″), is situated between the articulation opening ( 62 ) and the connection opening ( 60 ) of the second pipe bend ( 34 ).
13 . Circular distributor according to claim 7 , wherein the second pipe bend ( 34 ) is composed of a 135° pipe elbow ( 66 ) that has the articulation opening ( 62 ), and a 90° pipe elbow ( 68 ) that has the connection opening ( 60 ), and is rotated by 90° relative to the former.
14 . Circular distributor according to claim 7 , wherein the two pipe elbows ( 66 , 68 , 86 , 88 ) are connected with one another by means of a straight pipe piece ( 72 , 92 ).
15 . Circular distributor according to claim 11 , wherein the 135° pipe elbow ( 86 ) is composed of a 90° pipe elbow and a 45° pipe elbow ( 86 ′, 86 ″).
16 . Circular distributor according to claim 1 , further comprising a bearing journal ( 54 ) disposed at an axial distance from the first articulation coupling ( 32 ), disposed fixed on the frame, aligned with the vertical axis ( 36 ) in the region of the first articulation coupling ( 32 ), a holder ( 56 ) disposed on the distributor pipe ( 44 ), at a distance from the second articulation coupling ( 38 ), and a bracing element ( 58 ) fixed in place on the holder ( 56 ) with its one end, and mounted on the bearing journal ( 54 ) with its other end, so as to pivot about the vertical axis ( 36 ), which element can be adjusted in terms of its tensioning length.
17 . Circular distributor according to claim 16 , wherein the bracing element ( 58 ) is configured as a hydraulic cylinder/piston unit or as a chain or cable element.
18 . Circular distributor according to claim 17 , wherein the bracing element ( 58 ) and the distributor pipe ( 44 ) span a plane that aligns with the plane of the second articulation coupling ( 38 ).
19 . Circular distributor according to claim 1 , wherein the support frame ( 10 ) has a boom ( 18 ) that carries the conveyor pipe ( 24 ), disposed to rotate about a vertical axis ( 20 ) on the substructure ( 12 ), and wherein the entry-side end of the conveyor pipe ( 24 ) is connected with a charging pipe ( 28 ) fixed in place on the substructure, by way of a central rotating pass-through ( 26 ).
20 . Pipe bend for use in a circular distributor for thick substances, having a connection opening ( 60 , 80 ) disposed at one end, and an articulation opening ( 62 , 82 ) disposed at the other end, perpendicular to the former, wherein the articulation opening ( 62 , 82 ) spans a plane that intersects the plane of the connection opening ( 60 , 80 ) in the region of the center of the opening.
21 . Pipe bend according to claim 20 , wherein a pipe elbow group ( 86 , 88 ) is disposed between the articulation opening ( 82 ) and the connection opening ( 80 ), the center line ( 90 ) of which is disposed in a plane ( 84 ) that intersects the articulation opening ( 82 ) and the connection opening ( 80 ) in the center.
22 . Pipe bend according to claim 20 , further comprising a 135° pipe elbow ( 86 ) that has the articulation opening ( 82 ), and a 45° pipe elbow ( 88 ) that has the connection opening ( 80 ), and runs in the opposite direction.
23 . Pipe bend according to claim 20 , wherein a pipe elbow group ( 66 , 68 ) is disposed between the articulation opening ( 62 ) and the connection opening ( 60 ), the center line ( 70 ) of which spans two planes that are perpendicular to one another and intersect the articulation opening ( 62 ) and the connection opening ( 60 ) in the center, in a first section ( 70 ″) and a second section ( 70 ′).
24 . Pipe bend according to claim 20 , further comprising a 135° pipe elbow ( 66 ) that has the articulation opening ( 62 ), and a 90° pipe elbow ( 68 ) that has the connection opening ( 60 ), and is rotated by 90° relative to the former.
25 . Pipe bend according to one claim 22 , wherein the two pipe elbows ( 66 , 68 ; 86 , 88 ) are connected with one another by means of a straight pipe piece ( 72 , 92 ).
26 . Pipe bend according to claim 22 , wherein the 135° pipe elbow ( 66 , 86 ) is composed of a 90° pipe elbow and a 45° pipe elbow ( 66 ′, 66 ″; 86 ′ 86 ″).