Hao-engineering rubber, JQGZ-II elastic damping spherical bearings, spherical steel bearing damping 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 ball bearing support The main function of the seat is to reliably transfer reaction force to the upper structure of the bridge piers, and also to adapt to the bridge structure displacements and rotations of deformation, based on these performance requirements, laminated rubber bearings should be designed in a vertical direction with sufficient rigidity, to ensure that the maximum vertical loads bearing a certain compression deformation, the general provisions of bearing the greatest compression and shall not exceed 15% of the total thickness of the rubber, laminated rubber bearing in the horizontal direction of the force should have a certain flexible to adapt due to the vehicle braking force, temperature, creep and shrinkage of concrete and live loads of the horizontal displacement of the beam, while bearing thickness should also be able to meet the needs of the beam angle. Bridges laminated rubber bearings can be designed to become a fixed period, and the other end to the activities of the holder, it can be designed as part of the fixed end and the movable end of the bearing. Fixed bearing generally relatively thin thickness, to meet the vertical support beam reaction force and the end of the beam can rotate freely requirements. Horizontal displacement of the beam is mainly composed of a rubber shear deformation of the movable carriage to complete, depending on the height of the size of the amount of horizontal displacement. Fixed at both ends regardless of when the activities end bearing. Both the same thickness, horizontal displacement completed simultaneously by two bearings, each bear half. Meanwhile, all laminated rubber bearings JLGZ damping steel spherical bearing, at the minimum vertical loads, ensure the seat itself should not have any slip imagination. LRB as an effective bridge structure damping device has been applied abroad bridge device. Vertical stiffness, bearing good performance, to stabilize the upper structure supported bridges, horizontal stiffness of moderate elastic damping steel ball bearings to meet the large displacement generated by earthquakes. Better performance JQGZ-II elastic damping spherical steel branch, with the energy absorbing earthquake caused the ground, can resist a large earthquake LRB life expectancy under normal circumstances can reach 50 years. Lead rubber is squeezed into one ordinary laminated rubber bearings with lead or in multi-pin, a bearing structure in order to improve the performance of rubber bearing structure. LRB bear the weight of the bridge structure and the level of force, lead lag pin can produce plastic deformation to absorb energy, and to provide the level of resilience of steel ball bearings through the rubber damping, therefore, both across the LRB shock effect but also has good features, style bridge structure to improve an earthquake zone seismic level of ideal forms bearing. The general structure of simple structure, according to the Japanese zodiac signs bearing the relevant design standards provide damping said pressure is 1500 ~ 2600kn the LRB bearing design and production of finished products.