There are various types of bridge expansion joints at home and abroad, in addition to the shape and form of shaped steel sealing rubber bands have differences, and physical and mechanical properties of rubber seals rubber band is basically an indicator of the general provisions are consistent. Bridge expansion joints, is by the Ministry of Highway Planning and Design Institute, Chang'an University (formerly Xi'an Highway Institute), Xi'an self Chemical Industries Corporation (former Xi'an self Rubber Factory) collaboration developed a series of expansion joint device belongs Modular bridge expansion joint device In a class of products. 1. The composition and structural characteristics of the main principles of bridge expansion joints originally welding steel and rubber parts, formed by the steel beam system and the control box to withstand vehicle load support mechanism, affecting beam displacement system steel produced by the control lever and the control arm to the telescopic device Zhang closing drive mechanism, and a rubber seal, anchor facility and the auxiliary member composed. American Watson (Wotson) means a bridge expansion joints, bridge expansion joints support systems: support beam supporting the bridge expansion joint device on the brake can be buffered the impact of elastic support e80 type bridge expansion joints, so that the whole structure of the partial Inclined moving easily adjusted. Each of the beam expansion joints on each set of support beam, bridge expansion joints and rigid connection (Figure 5-22). Thus, fixed to the support beam of the beam does not tilt when subjected to braking force level, since the entire support beam as a basis for assembly, forms a very stable grid structures. 2, bridge expansion joints displacement control system: the telescopic device between the root support beam bearing boxes are installed polyurethane foam control spring 60 type bridge expansion joints, they can slip from one application to the other side of the profiled steel joints mf80 when the device is opened to the maximum extent, bridge expansion joints produced the greatest pressure control spring. Conversely, when compressed to a minimum clearance, i.e. the control spring is fully relaxed, the span adjustment, etc. to achieve the purpose, as shown in Figure 5-26. Profiled steel joints mf80_ Xiangtan joints _ win cooperation provided by the manufacturer Hengshui HaoTong 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!