Seismic steel ball bearings are improvements made in steel ball bearings on the basis of a form bearing. As the steel ball bearing steel bearing GCQZ earthquake in use, often in the displacement roller tilt, can not be restored in situ, to the holder of the maintenance and repair of a great deal of difficulty. Such as roller bearing roller Nanjing Yangtze River Bridge handsome and can not be reset, but also occur even Xuan roller pin cut phenomenon. To overcome these shortcomings roller bearing, in recent years, the development of a slide hinge stand that retained the original roller bearing upper part (ie hinge part), while the original roller bearing roller shaft portion cancellation, change into flat Teflon and stainless steel slide between the slide, thus to meet the needs of bearing displacement. The seat is now used in some types of long-span steel bridge and concrete bridge use. Since seismic steel ball bearing, mainly through the hinge axis, the force acting on the carriage top plate, should be rigid angle (35 ℃ ~ 45 ℃) diffusion at the center of the hinge shaft is passed, and then down to a rigid corner (35 ℃ ~ 45 ℃) diffusion is passed to the top surface of the slide bearing, so that the force can be evenly PTFE plate, thus bearing the overall structure is still great height, bearing a large amount of steel. Indeed if the force transmission surface contact of ball bearings (or bearing cylinder) instead of the hinge axis, and can reliably meet the requirements of the rotation bearing, and can significantly reduce the height of the bearing structure, reduced branched The overall amount of steel seat. Seismic steel ball bearing steel bearing using ZG230-450II and ZG270-500II, with its mechanical properties and chemical composition should be consistent with "carbon steel castings classification and technical conditions" (GB979) requirements. Seismic steel ball bearings should be normalized, the removal of the gate and welding repair should be carried out before the heat treatment. The main force on the site does not allow casting cracks exist. Seismic steel ball bearing steel ball bearing seismic performance is set viscous dampers on both sides of the ordinary activities of laminated rubber bearing, while bearing normal use, the bridge beam deflection temperature, due to the slow speed of temperature change bits , viscous dampers almost no resistance to displacement, and in the earthquake, viscous dampers in the role of rapid earthquake seismic force WJGKGZ steel ball bearings, almost displacement can not occur, will have a significant displacement of resistance, then the bridge Activities on the stand as a fixed bearing, so that all full-bridge piers withstand seismic forces together, achieve the purpose of cushioning. Viscous damper damping medium, usually using ultra-high viscosity silicone oil, to prevent leakage. Seismic steel ball holder generally by the cylinder, piston and damping materials, piston in the cylinder reciprocating JQZ do seismic steel ball holder, have adequate holes on the piston cylinder has a built-viscous materials. Structure under the action of earthquake seismic force and viscous dampers work together with the structure of import rod force, pushing the piston movement of the piston on both sides of the damping material produces a pressure difference through the orifice seismic damping medium steel ball bearings, thus damping force to achieve the purpose of energy dissipation. The internal structure of the damper varies, the speed index is generally between 0.1 to 1.0. Also damping force also with the piston area, the orifice size and length, cheer frequency, temperature, and other factors related to the damping material category. Viscous dampers and PTFE sliding bearing combination is also a common relief isolators. JQZ seismic steel ball bearing steel ball bearings _ _ Xinjiang seismic damping bearing manufacturers to provide tensile Guangrun by Hengshui Rubber Company. Hengshui Guangrun Engineering Rubber Co. (www.grgcxj.cn) (www.grgcxj.cn) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Guangrun Rubber Company and you work into the brilliant, for a better future! You can also access (www.grgcxj.cn/supply_details_45935985.html), for more information about the company.