The invention to be able to compensate for the free cross-setting rails spaced apart depending on the site conditions, yet relates to a rail-type expansion joint comprising a pre-setting module, to facilitate installation in the field by pre-setting the spacing between the rails at the factory one is the possible spacing adjustment.
The present invention, respectively installed on the opposite side of the upper end of the bridge joint crevice first stationary rail and a second rail fixed to a left hand position and the mail; The first fixed rail and second fixed rail when it is installed on a back-audio crevice opposite side upper end of the bridge fixing the first so that the first fixed rail and second fixed rail to keep spaced apart from each other conditions rail and a second includes a pre-setting module, to support the fixed rail in a state of being spaced apart in advance, the pre-setting module includes a lower portion coupled to the first stationary rail and the first support member; The bottom is coupled to said second stationary rail and to the first support member and the second support member is slidably coupled to the state the right and left direction crossed with each other thereon; Said first support member of the upper part and the second support of the first fixed rail by the rotating operation in the combined state on the upper portion of the member while the sliding displacement of the first support member and the second support member in the horizontal direction relative to each other and the first and includes a cam member for guiding such that the second fixed spacing between the rails is adjustable.