Bridge doublet -slit type expansion joint device

The utility model discloses a bridge doublet -slit type expansion joint device, including the support frame, be located the top plate of support frame top and be located the support frame and the topplate between two L shape intermediate lamellas setting up of mirror image, the middle part of top plate bottom links to each other with the support frame through increasing steady coupling mechanism.The utility model discloses the connected mode between top plate and the support frame has been improved, can utilize between top plate and support frame increases steady coupling mechanism interconnect, accelerate the installation rate between top plate and the support frame, the installation steps of top plate with the support frame have been simplified, reduce when installing the degree of difficulty between top plate and the support frame, traffic direction to the top plate leads, make the top plate whole at steady state, the harm that overdrafts such as reduction vehicle produced the topplate, be favorable to the