Road paver with spraying device

Abstract

The disclosure relates to a road paver that comprises a tractor with a material hopper and a machine frame. The machine frame is pivotably connected to the paving screed by pulling arms and a material spreading auger is disposed in a gap between the tractor and the paving screed. A longitudinal conveyor device extends through a tunnel between the material hopper and the gap. The road paver according to the disclosure is characterized by a spraying device that is configured for injecting a liquid into the gap between the tractor and the paving screed or into the tunnel or into the material hopper.

What is claimed is: 
     
         1 . A road paver comprising:
 a tractor including a material hopper and a machine frame;   a paving screed pivotably connected to the machine frame by pulling arms;   a material spreading auger disposed in a gap between the tractor and the paving screed;   a longitudinal conveyor device that extends through a tunnel between the material hopper and the gap; and   a spraying device that is configured for injecting a liquid into the gap between the tractor and the paving screed or into the tunnel or into the material hopper.   
     
     
         2 . The road paver according to  claim 1  wherein the spraying device is disposed in the gap. 
     
     
         3 . The road paver according  claim 1  wherein the spraying device is fastened on the machine frame or on the paving screed. 
     
     
         4 . The road paver according to  claim 1  wherein the spraying device is fastened on at least one of the pulling arms or on a fastening device that is configured to connect the paving screed to the pulling arms. 
     
     
         5 . The road paver according to  claim 1  wherein the spraying device has one or more outlet devices through which the liquid may selectively flow. 
     
     
         6 . The road paver according to  claim 5  wherein each of the one or more outlet devices has an adjusting element that is configured for variable adjustment of a liquid flow out of the respective outlet device. 
     
     
         7 . The road paver according to  claim 5  wherein the one or more outlet devices comprises multiple outlet devices, and wherein an adjusting element is provided, which is configured for variable adjustment of a liquid flow to a group of the outlet devices, wherein the group of outlet devices comprises at least two outlet devices. 
     
     
         8 . The road paver according to  claim 1  wherein an inflow device is provided on the spraying device. 
     
     
         9 . The road paver according to  claim 8  wherein the inflow device is fastened detachably on the spraying device. 
     
     
         10 . The road paver according to  claim 1  further comprising an adjusting unit for variable adjustment of a liquid flow to the spraying device. 
     
     
         11 . The road paver according to  claim 10  further comprising an inflow device provided on the spraying device, and wherein the adjusting unit is disposed on the inflow device and/or on the spraying device. 
     
     
         12 . The road paver according to  claim 10  further comprising an inflow device provided on the spraying device, wherein the adjusting unit is disposed between the spraying device and the inflow device. 
     
     
         13 . The road paver according to  claim 10  wherein the adjusting unit is electronically controllable. 
     
     
         14 . The road paver according to  claim 10  wherein the adjusting unit has an adjustable flow controller for adjusting the liquid flow. 
     
     
         15 . The road paver according to  claim 1  wherein the spraying device is arranged between two of the pulling arms. 
     
     
         16 . A road paver comprising:
 a tractor including a material hopper and a machine frame;   a paving screed pivotally connected to the machine frame;   a material spreading auger disposed in a gap between the tractor and the paving screed;   a longitudinal conveyor device that extends through a tunnel between the material hopper and the gap; and   a spraying device configured to inject a liquid into the gap between the tractor and the paving screed or into the tunnel or into the material hopper.