Hao-engineered rubber, steel sliding hinge bearing, sliding hinge support provided 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 assembly after Appearance flatness requirements, the bearing assembly exposed surface roughness of steel sliding hinge bearing, beautiful, uniform welds, attendance sheet and lower seat board should be parallel to the ground sliding hinge support, parallelism should be no greater than the diameter or length of side 2 % two-way sliding hinge support, attendance sheet centerline and should coincide with the center line of the next sitting board. Transport and storage, the seat assembly should be fixed, and transport, storage, and installation shall be arbitrarily removed after assembly height deviation requirements. Corrosion, due to the hardness can not resist the acidic environment of the chloride ions and negative ions, and could easily be atmospheric ion erosion, especially in the supply environment, so to special protection, the installation should be preceded by cleaning surfaces, especially surfaces should be lubricated square value pollution. The basic provisions of the spherical bearing design, according to the national standard, bearing with PTFE sheet, high quality grease lubrication conditions in contact with the spherical steel and stainless steel friction coefficient reduction in the average stress is 30mpa, the design of friction coefficient should meet requirements under the concrete strength grade spherical bearings should generally not less than 40, must be arranged within a highly reinforced multilayer distribution range in the local branch bearing area under the seat type to withstand tensile stress of concrete splitting . Spherical bearing design principles, ball bearing design, the design of bridges and culverts not requested your prescription, do good introduction based on foreign experience and practical application. Bearing friction coefficient is 0.03. Bearing horizontal shear vertical bearing capacity of more than 20% of the vertical bearing capacity bearing for 1000-60000kn, divided into 25 specifications washing. Adapt bearing temperature -40-70 bearing angle is the maximum allowable 0.03rad, the main features of seismic spherical bearing structure can be attributed to having universal rotation, universal carrying directional sliding hinge support to meet the upper structure of the bridge various loads, generated by the reaction force transmitted rotational displacement requirements. Seismic spherical steel bearing under pressure, shear, since the strength and performance of such a carrier is higher than the strength and toughness of the structure itself. Use the holder at random seismic force, as long as the bridge and down the structure itself is not damaged, it will not fall beams and other consequences of the disaster from happening.