Hao-engineering rubber comb plate bridge expansion, Hanzhong telescopic device provided by Hao-engineering rubber. We are Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) located at: Hebei Hengshui specializes in: grid bearings, bridge expansion joints, water stop, bridge bearings, rubber bearings, spherical steel bearing single slit support mechanism type bridge expansion joint unit consisting of parallel comb plate bridge expansion joints in the direction of the bridge, using thick steel plate welded longitudinal steel beams (currently used overall shape of the profiled steel, referred to as stringers) and parallel to the bridge axis lateral support girder direction (referred to as beam) formed. The side sill and the side sill and the side is divided into different forms of cross-section of the stringer. For single stitch, located only side rails, no stringers and beams in its construction layout shown in Figure 5-1. Expansion joint support mechanism multi-slit apparatus shown in Figure 5-2. J-75 multi-slotted expansion joint device, due to the need to construct on the stringer to Figure 5-3 arrangement is connected to the contact with the beam. That is the number of beams in each group and the number of roots equal stringers. SSF-type bridge expansion joint device rubber seals rubber seals from bird-shaped rubber band and clip block (or layering), with the upcoming rubber bands pressed into the groove clamp block bridge seismic telescopic device (or layering), the clamp block ( or clip strip) every certain distance from the outer edge of the longitudinal steel telescopic device, steel bolt through the clamp block the rubber bands clamped beneath the middle of the beam or side beam flange telescopic device, shown in Figure 5-9 SSF-type bridge expansion forming device, the maximum displacement amount is 640mm. From 80 ~ 640mm, 80mm for the level to divide more than 640mm telescopic amount can be individually designed according to the needs.