Bridge expansion joints bridge expansion joint displacement control system displacement control system consists of a waterproof rubber band stretching and displacement control system. Bridge expansion joints with flexible control system, that is, between the beams and the pole beam has an elastic element, by turning the control bridge and culvert joints pole displacement of the beam, shown in Figure 5-9. That the use of leveraged displacement control system f60 type expansion joints, through a set of beams connecting the lever up, placed a rubber elastic element joints bridge expansion joints between the lever and the beam, the beam between the intermediate telescopic beam longitudinal displacement, leverage and beams corner of rubber elastic element absorbed lever connected to the connecting rod passes through the horizontal force and displacement control box, bridge expansion joints between the rod and the control box is connected also with rubber elements to absorb the corner connecting rod displacement to achieve displacement control bridge expansion joints, achieve uniform stretching each seam. Germany Maurer (Maurer) telescopic device bridge expansion joints, its force in the beam edge beam and hierarchical (above) after rolling profiled steel welded. Early use of steel box beams, structural steel beams and corrugated box side rubber composition (Figure 5-18), and provides 60mm and 80mm as a unit modulo two series (Table 5-7). More recent bridge expansion joints using Z-shaped side sill beams and king with a bird-shaped rubber band combined structure (Figure 5-19) to 80mm as a unit modulus series of specifications listed in Table 5-8. Bridge expansion joints displacement control system, in addition to have been made by the use of beam oblique angle changes to a scalable solution, while the use of elastic displacement control system mainly mechanism (Figure 5-20) for c-80 joints joints _ _ Hao-Hao Rubber pass by Hengshui Rubber Company. Hengshui Hao-Engineering Rubber Co. (www.htgcxj.com) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement through innovative ideas will lead Hao engineered rubber and you hand in hand into the brilliant, for a better future!