Ball bearings, along with engineering structures in the form of the ever-expanding qz-type spherical bearing steel, its use will continue to expand the scope and with the progress of science and technology, new materials appear, improvement and development process of damping spherical steel supports, in the form of spherical bearings are not limited to stroke the rubber material, while the use of other forms of elastomers, and construction will continue to emerge and develop, so consider using the formula, you should pay attention to new materials, structures and access The new technology of the latest products. Bearing ball bearing is mainly made of steel castings or steel processing, in the past, is generally used as a bridge abutment using a rolling ball bearing type test steel parts, swing and slide to accommodate the displacement and rotation of the bridge a. Rubber bearing structure according to its use and there are multiple types of bearing capacity is characterized by his ability, can use a variety of bridge displacement and rotation needs, and on the great rebates and a large displacement of the support beams and has a very negative rebates good use, before the 1960s, mostly small and medium-span bridges use steel bearings, bearing large tonnage highway bridge now use pot, rubber bearing more, but people generally use steel railway bridge steel ball bearings bearings, steel bearings are steel commonly used bearings and special bearings and so on. Make the choice of ball bearings except possibly transmitted vertical and horizontal reaction force outside the universal spherical steel bearing, but also to adapt to deformation along the bridge and transverse directions. Meanwhile, the choice of ball bearings should be made due to the superstructure longitudinal and transverse beam displacement and angular distortion arising from unfettered as possible due to temperature changes and other bridges, ball bearing load deflection, as a bridge bearing design The basic factor conditions, there is a reaction force (vertical force, horizontal force, a negative reaction force), in addition to seismic forces, such as ball bearings and other steel deck bridge small proportion of dead load, at a high sound insulation to avoid continuous sill points, sometimes due to wind loads produce maximum horizontal reaction force, but also sometimes due to temperature changes the level of reaction force generated by friction ball bearing rubber bearings to determine the cross-section. Displacement and the connection conditions of the three, ball bearings following items are described as the county should pay particular attention. Shrinkage and creep of concrete, prestressed members so elastic deformation caused by stretching and rotating universal ball bearing steel beam of a spherical steel bearing _ _ Yangzhou Hengshui Hao-production and marketing provided by the Engineering Rubber Co., Ltd. Hengshui HaoTong. Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) strong, credible, Hebei Hengshui site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement through innovative ideas will lead Hao engineered rubber and you work into the brilliant, for a better future!