Spherical rubber bearing is a kind of basin-type rubber bearing with anti-vibration effect, which is processed by upper and lower bearing plates, spherical plates and PTFE slide plate. The difference between the spherical rubber bearing and the basin rubber bearing is that the rubber plate is replaced by a spherical PTFE plate, and the middle steel plate and the bottom basin are also designed to be spherical, which can greatly reduce the friction coefficient. The overall displacement is achieved by the sliding movement of the upper support plate and the PTFE plate. The upper support plate is equipped with a guide ring to restrict the unidirectional or multi-directional displacement of the support. The corner of the support depends on the spherical plate. And the sliding between the spherical PTFE plate to achieve.
The spherical rubber bearing has some characteristics of the basin rubber bearing: large bearing capacity, large displacement of the bearing, reliable force transmission, flexible rotation, and can fully meet the needs of large corners. According to different design and construction requirements, spherical rubber bearings can be produced into one-way movable bearings, multi-directional movable bearings and fixed bearings. No matter which type of bearings are produced according to the design and construction requirements.
The spherical rubber bearing has its own unique advantages in use: the spherical rubber bearing transmits force through the spherical surface, and there is no force necking phenomenon, and the reaction force acting on the concrete is very uniform; the rotation process of the spherical bearing is through the spherical polytetrafluoroethylene The sliding of the vinyl plate can be realized, and the rotating torque is small. This torque is related to the radius of the spherical surface and the friction coefficient of the PTFE plate, and has nothing to do with the rotation angle of the support. The large rotation angle requirement of the bridge can be met. The all-directional rotation performance of the spherical rubber bearing is the same, which is more suitable for use in curved bridges and wide bridges. The support does not need the rubber part to bear pressure, so the aging of the rubber has no direct effect on its service life. It is more suitable for use in areas with harsh temperature environments.
