Between the rubber sheet is embedded in the rubber layer to prevent lateral expansion, while one-way slide projections drum tension and compression of spherical steel bearing, ball bearing type shear stiffness had little impact at the level of force H action, arising rubber bearings The amount of displacement and the level of non-stiffening rubber bearing deformation roughly the same. Ball bearing similar bridges generally use several layers of thin rubber sheet and stiffener plate for stiffening rubber bearings, ball bearings, the finished product is between the layers of rubber sheet with adhesive coated by a thin steel in the mold pressing a vulcanized integral structural configuration. Displacement of the ball bearing and bearing only the net thickness of the rubber layer, and the other, in order to prevent corrosion stiffening steel, ball bearings on the stiffening rubber bearing, below and around the rubber has a certain thickness of the protective layer . Transportation industry standard "roads and bridges laminated rubber bearings" (JT / T 4-2004) of provisions for ordinary plate and rectangular and circular rubber bearing laminated rubber bearing given the specific structural configuration shown. Use ball bearing Attention, design, design units currently found in some of laminated rubber bearings and bridge and culvert design specifications, industry standard design requirements do not match. Such as flat-size design is very large, but very thin thickness of seismic tension and compression bearing steel ball bearings, ball bearing checking the projects carried out in accordance with the relevant provisions of the bridge specifications and industry standards, and its compression, rotation performance can not meet requirements, shear deformation even smaller, even as the use of fixed bearing, spherical bearings must also meet requirements before end of the beam angle. Such a ball bearing, in the course of Void and prone to accelerated aging, causing the ball bearing damage early, so, JT / T 4-2004 value specified in the measured bearing angle, rubber bearing reinforced concrete bridge greater than or equal 1/300, 1/500 or greater pull on the steel bridge steel ball bearing pressure and, when factory production and issuing production licenses, as the content of the test must be carried out. In addition, designers in the selection of laminated rubber bearings, the ball bearing and the bearing capacity of the bridge actually supporting reaction force should be consistent with the general range of about 10 percent of excellence, you can meet your requirements, not the choice of bearing bearer The larger force than necessary bearing capacity of the security tension and compression damping steel spherical bearings, ball bearings, especially the choice of ball bearings, the bridge should be as close to the actual capacity, because PTFE sheet and endlessly when dry plate friction As the positive pressure decreases. Tension and compression of spherical steel bearings, Hao-product worthy of trust, unidirectional sliding steel ball bearing tension and compression provided by Hao-engineered rubber. Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) in grid bearings, bridge expansion joints, water stop, bridge bearings, rubber bearings, ball bearings and other steel industry has high visibility, integrity management both, quality of service, welcome to inquire or consult our "Commercial Union Service" it!