Machine for sawing trenches and placing ducts/cables

Abstract

A machine arranged for sawing micro trenches and placing ducts/communication cables in micro trenches. The machine comprises a saw blade arranged for sawing a micro trench in an area. The machine further comprises a stabilizing device arranged for stabilizing the walls of the micro trench when placing ducts/communication cables into the micro trench. The stabilizing device is positioned immediately behind said saw blade in the micro trench. The stabilizing device is configured to guide at least one duct/communication cable when placed into said micro trench.

1 . A machine arranged for sawing micro trenches and placing ducts/cables in micro trenches, said machine comprising a saw blade arranged for sawing a micro trench in an area comprising a first layer L 1  being a surface layer, such as asphalt or concrete, and a second layer L 2  being a bearing layer to and being located below said first layer L 1 , wherein said saw blade is arranged to saw through said first layer L 1  and into said second layer L 2 ; said machine further comprises a stabilizing device arranged for stabilizing the walls of said micro trench when placing ducts/cables into said micro trench, said stabilizing device being positioned immediately behind said saw blade in said micro trench, and said stabilizing device comprising guiding means for guiding at least one duct/cable when placed into said micro trench, wherein said stabilizing device comprises an inlet and an outlet for ducts/cables, said inlet and outlet being connected to said guiding means, and wherein said guiding means are arranged so that an order of a plurality of ducts/cables is preserved when leaving said outlet, wherein said stabilizing device has a front part and a back part, said front part being located immediately behind said saw blade and having a section that has a shape that is complementary or near complementary to the shape of said saw blade. 
     
     
         2 . Machine according to  claim 1 , wherein said guiding means are channels in said stabilizing device and said inlet and said outlet are connected to each other by means of said channels. 
     
     
         3 . Machine according to  claim 2 , wherein a minimum distance between said outlet and said saw blade is between 100 to 500 mm. 
     
     
         4 . Machine according to  claim 2 , wherein said inlet, said outlet and said channels together are removably attached on said stabilizing device. 
     
     
         5 . Machine according to  claim 1 , wherein said saw blade has a circular shape. 
     
     
         6 . Machine according to  claim 1 , wherein said inlet, said outlet and said channels are arranged on said back part of said stabilizing device. 
     
     
         7 . Machine according to  claim 1 , wherein said stabilizing device has an axe shape in cross section at said front part. 
     
     
         8 . Machine according to  claim 1 , wherein said stabilizing device has a maximum width in cross section that is equal to or slightly less than a width for said saw blade. 
     
     
         9 . Machine according to  claim 1 , wherein a closest distance between said saw blade and said stabilizing device is larger than 0 mm but less than 10 mm. 
     
     
         10 . Machine according to  claim 1 , wherein an operating depth for said stabilizing device in said micro trench is up to 50 mm less than an operating depth for said saw blade. 
     
     
         11 . Machine according to  claim 1 , wherein said stabilizing device and said saw blade are arranged to be elevated and lowered independently of each other. 
     
     
         12 . Machine according to  claim 1 , wherein said machine further comprises at least one drum arranged for holding a ducts/cables before placing said ducts/cables into said micro trench via said stabilizing device.