Shandong highway bridge expansion joints, Hao-engineering rubber, C40-type highway bridge expansion joints supplied by Hao-engineered rubber. Shandong highway bridge expansion joints, Hao-engineering rubber, C40-type highway bridge expansion joints are Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) 2014 has been newly upgraded launched bridge expansion joints displacement control system bridge expansion joints displacement control system mainly by water stretching rubber bands and displacement control system. Bridge expansion joints with flexible control system, that is, between the beams and the beam has a pole elastic element, the displacement of the pole by turning the control beam D160 type highway bridge expansion joints, shown in Figure 5-9. That is the use of a lever-type displacement control system, a set of beams by a lever connected, placed rubber elastic element leverage and bridge expansion joints between beams, beams stretching the intermediate beam longitudinal displacement, angle between the lever and beams made of rubber elastic element absorb C40-type highway bridge expansion joints, levers to deliver the level of force and displacement through the connecting rod is connected to the control box, bridge expansion joints between the connecting rod and the control box also has rubber elements to absorb the connecting rod angle displacement to achieve displacement control, to each seam uniform stretching. Bridge expansion joints rubber seal bridge expansion joints by bird-shaped rubber band and clip block (or layering) consisting of D60 type highway bridge expansion joints, rubber bands soon pressed into the clamp block (or layering) of the groove, bridge expansion joints clip block (or clip strip) every certain distance from the outer edge of the longitudinal, steel bolt clamp blocks the rubber strip is clamped to the edge of the beam or beams under the intermediate flange, SSF type bridge expansion joints through the device shown in Figure 5-9, The maximum displacement amount is 640mm. From 80 ~ 640mm, 80mm for the level to be divided, the amount is greater than 640mm telescopic individually designed according to needs.