Grate bar and use of a grate bar

Abstract

A grate bar having a base body made from a first material and a grate bar reinforcement which has a material that is different from the first material. The base body has a running surface having a longitudinal extent, an upper side and an underside, and a center line between the upper side and the underside in the longitudinal extent, which center line extends through the center of gravity of the running surface. The grate bar reinforcement is arranged below the center line and joined to the base body.

Claimed is: 
     
         1 . A grate bar comprising:
 a base body made from a first material and   a grate bar reinforcement which has a material that is different from the first material,   the base body having a running surface having a longitudinal extent, an upper side and an underside, and a center line between the upper side and the underside in the longitudinal extent,   wherein the center line extends through a center of gravity of the running surface,   wherein the grate bar reinforcement is arranged below the center line and joined to the base body, and   wherein the grate bar is produced from a cast material and the grate bar reinforcement is cast on or the grate bar has a strut which is spaced from the underside and is held between two flanges.   
     
     
         2 . The grate bar according to  claim 1 , wherein the grate-bar reinforcement is joined to the base body in such a manner that when the base body breaks as a consequence of pressure on the upper side of the running surface, the base body breaks before the grate-bar reinforcement breaks. 
     
     
         3 . The grate bar according to  claim 1 , wherein after a breakage of the base body, the grate-bar reinforcement forms an interlocking joint of fragments of the base body. 
     
     
         4 . The grate bar according to  claim 1 , wherein less than 50% of an outer surface area of the grate-bar reinforcement forms a bearing surface at the base body. 
     
     
         5 . The grate bar according to  claim 1 , wherein the grate-bar reinforcement extends over more than 35% of the longitudinal extent. 
     
     
         6 . The grate bar according to  claim 1 , wherein the grate-bar reinforcement comprises at least one strut which extends along the longitudinal extent. 
     
     
         7 . The grate bar according to  claim 1 , wherein the grate-bar reinforcement comprises a sheet-metal material. 
     
     
         8 . The grate bar according to  claim 7 , wherein the sheet-metal material has through openings between struts and webs. 
     
     
         9 . The grate bar according to  claim 1 , wherein the grate-bar reinforcement is a spiral. 
     
     
         10 . The grate bar according to  claim 1 , wherein the grate-bar reinforcement comprises a plurality of rings joined to one another. 
     
     
         11 . The grate bar according to  claim 1 , wherein the grate-bar reinforcement comprises through holes or holes. 
     
     
         12 . The grate bar according to  claim 1 , wherein the grate-bar reinforcement comprises has webs between rows of holes. 
     
     
         13 . The grate bar according to  claim 1 , wherein the grate-bar reinforcement is three-dimensionally shaped. 
     
     
         14 . The grate bar according to  claim 1 , wherein the grate-bar reinforcement comprises a hollow body. 
     
     
         15 . The grate bar according to  claim 14 , wherein the hollow body is only joined on one side to the underside of the running surface. 
     
     
         16 . The grate bar according to  claim 1 , wherein the base body has flanks extending at a side of the underside of the running surface, perpendicularly to the upper side, and wherein the grate-bar reinforcement is arranged between the flanks.