Hao-engineering rubber, 40D-type bridge expansion joints, D-type bridge expansion joints supplied 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 current domestic outside Modular bridge expansion joint device has various types, in addition to the shape and form of shaped steel with rubber seal are different outside 80D-type bridge expansion joints, and physical and mechanical properties of rubber seals rubber band is basically an indicator of the provisions roughly the same. Single slit expansion joint device is determined by the 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 belongs Modular Bridges expansion joint device in a class of products. 1, the composition of the body was originally welding steel and rubber parts, structural features and principles of the single slit type bridge expansion joint device, formed by the steel beam system and the control box to withstand vehicle load bearing institution, affecting produced by the steel beam joystick and control arm system to control the telescopic device displacement drive mechanism 40D Zhang closed-type bridge expansion joints, as well as rubber seals, anchoring facilities and auxiliary pieces composed. Transmission mechanism slotted J-75 multi-drive mechanism type bridge expansion is determined by the control arm, joystick and other ancillary pieces of composition. Joystick from the beams in through the web, where and has a cylindrical bearing with D-type bridge expansion joints, shown in Figure 5-4. Mechanical motion transmission mechanism will be as follows: the beam embedded in the body of the cabinet led control arms, control arm forcing the lever rotates, joystick push to slide axially along the bridge beams, beams and stringers led in parallel lateral movement. By Yan-shaped rubber seals rubber and stainless steel clamp bar and clip blocks. Side of the block is about to rubber toothed pattern pressed into the inner recesses of the clip, clip a certain distance of the outer edge of the vertical intervals set to clamp block Modular D-type bridge expansion joints, with stainless steel bolt through the clamp block, rubber strip clamped beneath the flange stringers, shown in Figure 5-5