Hao-engineering rubber | combs bridge expansion | bridge expansion project by Hao-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 current domestic outside Modular bridge expansion joint device has various types, 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. Single slit expansion joint device combs bridge expansion is determined by Ministry of Transportation Highway Planning and Design Institute, Chang'an University (formerly Xi'an Highway Institute), Xi'an self Chemical Industry Company (formerly Xi'an self Rubber Factory) collaboration developed a series of expansion joint device Highway bridge expansion, belong Modular bridge expansion joint device a class of products. A body originally welding steel and rubber parts, structural features and principles of the single slit type bridge expansion joint device composition bridge expansion by steel beam-forming system and the control box to withstand vehicle load bearing institutions, affecting the beam displacement systems produced by steel joystick and control arm to control the telescopic device Zhang closing transmission mechanism, as well as rubber seals, anchoring facilities and auxiliary pieces composed. Series of specifications and design parameters of J-75-type expansion joint device series telescopic amount in the range of 0 ~ 1040mm. Its installation is reserved slot size, model and design parameters, listed as shown in Figure 5-6 and Table 5-2.