Bridge telescopic device capable of being rapidly installed

A bridge expansion device capable of being rapidly installed comprises a first beam body, a second beam body and an expansion component, installation notches are formed in the beam end of the first beam body and the beam end of the second beam body, prefabricated holes are formed in the bottoms of the installation notches, bolt assemblies are arranged in the prefabricated holes, the lower ends of the bolt assemblies are fixed in the prefabricated holes, and the lower ends of the bolt assemblies are connected with the expansion component. The telescopic component is installed at the upper end of the bolt assembly, and an adjusting nut used for adjusting the installation height of the telescopic component is installed on the bolt assembly. According to the bridge expansion joint device, prefabricated holes needed by installation of the expansion components are manufactured in the beam body in advance, and steel bars do not need to be embedded in the installation notches in advance, so that a large number of ste