Bridging Device

Abstract

A bridging device for an expansion joint, the expansion joint being placed between an abutment and a superstructure, comprises at least one plate that extends longitudinally of the joint, and is placed between the abutment and the superstructure, and which is supported on at least two traverses that span the expansion joint while resting upon the abutment and the superstructure. A tooth profile is placed on the top side of the plate and the teeth thereof, which point toward both sides, mesh with the teeth of teeth profiles assigned to the adjacent plates or edge profiles. Two sealing strips are connected to each plate and are detachably connected to the adjacent plate(s) or to the adjacent edge profile(s). Both sealing strips connected to the relevant plate are, in the area of the parting plane, fixed between the at least one plate and the tooth profile placed thereon.

1 . A bridging device for an expansion joint arranged between an abutment bearing and a superstructure in a drivable structure, comprising: 
 edge profiles provided on one of the sides of both the abutment bearing and superstructure;    at least one plate that extends in a longitudinal direction of the expansion joint arranged between the abutment bearing and the superstructure, where the plate is supported by at least two traverses that span the expansion joint and rest on the abutment bearing and superstructure;    a tooth profile arranged on a top side of the at least one plate with its teeth projecting sideways on both sides and meshing with teeth of tooth profiles arranged on adjacent edge profiles or plates;    elastic sealing profiles detachably connected to the corresponding edge profile and plate and/or both corresponding plates arranged between the edge profile on the side of the abutment bearing and the adjacent plate, the edge profile on the superstructure side and the adjacent plate and/or both adjacent plates; and    two receiving grooves arranged between the at least one plate and the tooth profile attached to it in the area of a parting plane, where said grooves are open sideways and bordered by surface sections of the tooth profile and the plate, where edge sections of the elastic sealing profiles connected to the respective plate are clamped thereto;    the at least one plate disclosing a flat upper sealing surface and receiving grooves limited by recesses, which are arranged on the underside of the tooth profile facing the at least one plate.    
     
     
         2 . The bridging device according to  claim 1 , wherein the elastic sealing profiles are arranged as hump profiles.  
     
     
         3 . The bridging device according to  claim 2 , wherein at least 70% of the space delimited by the reinforcement of the sealing profile and both associated tooth profiles are located below the hump section.  
     
     
         4 . The bridging device according to  claim 1 , wherein the tooth profile is screwed to the at least one plate.  
     
     
         5 . The bridging device according to  claim 4 , wherein the screws are staggered and offset alernately with respect to a center of the tooth profile.  
     
     
         6 . The bridging device according to  claim 1 , wherein the teeth are offset against each other by half a pitch on both sides of the tooth profile.  
     
     
         7 . The bridging device according to  claim 6 , wherein the teeth intersect each other on both sides of the tooth profile.  
     
     
         8 . The bridging device according to  claim 1 , wherein the tooth profile comprises a lower base plate section adjacent to the at least one plate, and an upper tooth plate section.  
     
     
         9 . The bridging device according to  claim 1 , wherein the tooth profile comprises a sequence of several individual tooth profile segments attached to the at least one plate.  
     
     
         10 . The bridging device according to  claim 9 , wherein edges between two adjoining tooth profile segments extend obliquely to the longitudinal direction of the at least one plate.  
     
     
         11 . The bridging device according to  claim 9 , wherein the length of at least one part of the tooth profile segments is equal to the single or double value of the gearing pitch.  
     
     
         12 . The bridging device according to  claim 9 , wherein the tooth profile and/or the tooth profile segments ( 9 ) are arranged as single-piece forgings or castings.  
     
     
         13 . The bridging device according to  claim 1 , wherein the elastic sealing profiles are clamped continuously between the at least one plate and tooth profile over their entire length.