Road paver, loader and homogenizing mechanism

Abstract

A road paver ( 10 ) and a loader and a homogenizing mechanism ( 17 ) which permit optimum quality of the road building material without the operation of the road paver ( 10 ) or of the loader being impaired. Road coverings are customarily produced from materials such as asphalt by means of road pavers ( 10 ). In order to ensure optimum durability of the road covering produced, the road building material is homogenized by mixing devices prior to being laid. The continuous mixing of the road building material requires a very large amount of energy and results in severe wear phenomena in the mixing devices.

1 . A road paver ( 10 ) with a running gear ( 12 ), with at least one hopper ( 14 ) for receiving road building material, with a paving screed ( 16 ) for producing a road covering, and with a conveyor for conveying the road building material from the hopper ( 14 ) to the paving screed ( 16 ), wherein a mechanism ( 17 ) for homogenizing the road building material is positioned in the hopper ( 14 ), with at least one receiving space ( 18 ) for receiving the road building material. 
     
     
         2 . The paver ( 10 ) according to  claim 1 , wherein the homogenizing mechanism ( 17 ) is an independent unit, in particular has a dedicated energy supply ( 22 ), preferably a dedicated motor, and therefore the homogenizing mechanism ( 17 ) can be operated independently of the road paver ( 10 ). 
     
     
         3 . The road paver ( 10 ) according to  claim 1 , wherein the mechanism ( 17 ) has, in the at least one receiving space ( 18 ), at least one mixing element ( 19 ,  20 ) which is preferably drivable in a rotating manner about a shaft ( 27 ,  28 ) parallel to a paving direction ( 13 ) of the road paver ( 10 ) by means of the motor, and in that the at least one mixing element ( 19 ,  20 ) has blades ( 29 ) arranged radially about the shaft ( 27 ,  28 ), wherein the shaft ( 27 ,  28 ) is preferably assigned a set of long blades ( 29 ) and a set of short blades ( 29 ) which are arranged in an alternating sequence along the shaft ( 27 ,  28 ). 
     
     
         4 . The road paver ( 10 ) according to  claim 3 , wherein the homogenizing mechanism ( 17 ) has two of the mixing elements ( 19 ,  20 ), the shafts ( 27 ,  28 ) of which are oriented parallel to each other and which are preferably drivable so as to rotate in opposite directions to each other, wherein the distance between the blades ( 29 ), which rotate in opposite directions about the shafts ( 27 ,  28 ), of the respective mixing elements ( 19 ,  20 ) is minimized, in particular in that the blades ( 29 ), which rotate in opposite directions, of the respective mixing elements ( 19 ,  20 ) overlap. 
     
     
         5 . The road paver ( 10 ) according to  claim 1 , wherein the homogenizing mechanism ( 17 ) has wheels ( 25 ) with which the mechanism ( 17 ) can be supported on an underlying surface, the wheels ( 25 ) are preferably removable from the mechanism ( 17 ), and the mechanism ( 17 ) can be fastened, in particular releasably, in the hopper ( 14 ). 
     
     
         6 . The road paver ( 10 ) according to  claim 1 , wherein the homogenizing mechanism ( 17 ) has at least one, in particular closable, opening through which the road building material is conveyed onto the conveyor, preferably in that the at least one opening in the homogenizing mechanism ( 17 ) at least partially corresponds to an opening in the hopper ( 14 ). 
     
     
         7 . The road paver ( 10 ) according to  claim 3 , wherein the homogenizing mechanism ( 17 ) has a cleaning mechanism ( 26 ) by means of which the receiving space ( 18 ) and the at least one mixing element ( 19 ,  20 ) can be cleaned, and/or in that the mechanism ( 17 ), in particular the receiving space ( 18 ), can be heated by the motor, and/or the mechanism ( 17 ), in particular the receiving space ( 18 ) has preferably thermal insulation. 
     
     
         8 . The road paver ( 10 ) according to  claim 7 , wherein the cleaning mechanism ( 26 ) can be operated automatically, in particular depending on the degree of soiling, filling level of the mechanism ( 17 ) with road building material, planned refilling of the mechanism ( 17 ) and/or external conditions, such as temperature and humidity. 
     
     
         9 . The road paver ( 10 ) according to  claim 3 , wherein the at least one mixing element ( 19 ,  20 ) of the homogenizing mechanism ( 17 ) can be exchanged, preferably in that the blades ( 29 ) of the at least one mixing element ( 19 ) can be exchanged. 
     
     
         10 . A loader with a running gear with at least one hopper for receiving road building material, with a conveyor for preferably continuously feeding the road building material from the hopper to a road paver for paving a road covering, in particular an asphalt layer or asphalt paving, comprising a road paver ( 10 ) with a running gear ( 12 ), with at least one hopper ( 14 ) for receiving road building material, with a paving screed ( 16 ) for producing a road covering, and with a conveyor for conveying the road building material from the hopper ( 14 ) to the paving screed ( 16 ), wherein a mechanism ( 17 ) for homogenizing the road building material is positioned in the hopper ( 14 ), with at least one receiving space ( 18 ) for receiving the road building material. 
     
     
         11 . A homogenizing mechanism ( 17 ) for homogenizing road building material, with a receiving space ( 18 ) for receiving the road building material having at least one mixing element ( 19 ,  20 ) for homogenizing the road building material, and with at least one opening in order to feed the road building material to a further device, wherein the at least one mixing element ( 19 ,  20 ) can be driven by an energy supply ( 22 ) dedicated to the mechanism ( 17 ). 
     
     
         12 . The homogenizing mechanism ( 17 ) according to  claim 11 , wherein the mechanism ( 17 ) can be coupled, in particular can be releasably coupled, to a hopper ( 14 ) of a road paver ( 10 ) and/or of a loader. 
     
     
         13 . The homogenizing mechanism ( 17 ) according to  claim 11 , wherein the at least one mixing element ( 19 ,  20 ) is assigned to the mechanism ( 17 ), which mixing element is preferably drivable in a rotating manner about a shaft ( 27 ,  28 ) parallel to a longitudinal axis and the at least one mixing element ( 19 ,  20 ) has blades ( 29 ) arranged radially about the shaft ( 27 ,  28 ), wherein the shaft ( 27 ,  28 ) is preferably assigned a set of long blades ( 29 ) and a set of short blades ( 29 ) which are arranged in an alternating sequence along the shaft ( 27 ,  28 ). 
     
     
         14 . The homogenizing mechanism ( 17 ) according to  claim 13 , wherein the mechanism ( 17 ) has two of the mixing elements ( 18 ,  19 ), the shafts ( 27 ,  28 ) of which are oriented parallel to each other and which are preferably drivable so as to rotate in opposite directions to each other, wherein the distance between the blades ( 29 ), which rotate in opposite directions about the shafts, of the respective mixing elements ( 18 ,  19 ) is minimized, in particular in that the blades ( 29 ), which rotate in opposite directions, of the respective mixing elements ( 18 ,  19 ) overlap. 
     
     
         15 . The homogenizing mechanism ( 17 ) according to  claim 12 , wherein the mechanism ( 17 ) has wheels ( 25 ) with which the mechanism ( 17 ) can be supported on an underlying surface, the wheels ( 25 ) are preferably removable from the mechanism ( 17 ) and the mechanism ( 17 ) can be fastened, in particular releasably, in the hopper ( 14 ). 
     
     
         16 . The homogenizing mechanism ( 17 ) according to  claim 12 , wherein the at least one opening for feeding the road building material to a further device ( 17 ) is closable and at least partially corresponds to an opening in the hopper ( 14 ). 
     
     
         17 . The homogenizing mechanism ( 17 ) according to  claim 11 , wherein the mechanism ( 17 ) has a cleaning mechanism ( 26 ) by means of which the receiving space ( 18 ) and the at least one mixing element ( 19 ,  20 ) can be cleaned, and/or in that the mechanism ( 17 ), in particular the receiving space ( 18 ), can be heated by means of the dedicated energy supply ( 22 ), and/or the mechanism ( 17 ), in particular the receiving space ( 18 ), has preferably thermal insulation. 
     
     
         18 . The homogenizing mechanism ( 17 ) according to  claim 17 , wherein the cleaning mechanism ( 26 ) can be operated automatically, in particular depending on the degree of soiling, the filling level of the mechanism ( 17 ) with road building material, planned refilling of the mechanism ( 17 ), and/or external conditions, such as temperature and humidity. 
     
     
         19 . The homogenizing mechanism ( 17 ) according to  claim 13 , wherein the at least one mixing element ( 19 ,  20 ) can be exchanged, preferably in that the blades ( 29 ) of the at least one mixing element ( 19 ,  20 ) can be exchanged.