Sheng rubber bearings, selling more models and price priority, strong rubber bearing quality, perfect service, Sheng rubber your first choice, you are welcome to order 15132847000 rubber bearing means for supporting the weight of the container or equipment, and a support member fixed to a certain position, but also to withstand vibration and seismic load operation. Rubber and rubber bearings are made of thin steel plate closely for supporting the weight of the bridge. Rubber bearing top surface with pure rubber ball surface, seat bottom plus the semi-circular ring arranged around the R2.5 mm. It retains the advantages of isotropic deformation circular plate bearing, but also against the bias of the installation is easy to produce, waited in vain off phenomenon, for general small-span bridges, but also for a variety of complex arrangement, longitudinal compared large overpass and viaduct. Depending on the slope can adjust the ball bearing crown radius and overall thickness. By Material: a: Neoprene: Temperature + 60 ℃ ∽-25 ℃ b: Natural rubber: Temperature + 60 ℃ ∽-40 ℃ c: EPDM: Temperature + 60 ℃ ∽-45 ℃ After the installation of a rubber bearing seat approach, should check whether the manufacturer's trademark or a permanent marker on the stand. When installed, should be in accordance with the requirements of design drawings on a support pad stone and bearing are marked on the center line of supports, in order to ensure accurate bearings in place. 2 bearing installation, bearing should prevent bias or appear to generate too much initial shear deformation. After installation is complete, you must ensure the holder, in close contact with the substructure, with no void phenomenon. Is not formed on the whole slab structure should avoid heavy vehicles. 3 bridge piers should be designed bearing maintenance, replacement needs. Under no circumstances should two or more bearings mounted side by side along the longitudinal centerline of the beam supported at the same point; the same one beam (plate) should not be set more than two transverse bearings; different specifications support seat should not be installed side by side. 4 bearing installation should be fully put to check seat leakage, bearing mounting direction, position (in contact with the embedded steel and bearing centerline), bearing specification model is wrong, temporary fixed facilities are dismantled , PTFE slide bearing grease is injected into the oil (Do not use lubricating oil instead of grease) and other phenomena, once discovered, should adjust and treatment, to ensure the normal operation after bearing installation and record holder after the installation deviations and anomalies. 5 seat use phase average compressive stress σc = 10MPa. Bearing rubber elastomer volume Eb = 2000MPa. When the seat in contact with the concrete, the friction coefficient μ = 0.3; contact with the steel plate, the friction coefficient μ = 0.2; PTFE plate and stainless steel plate in contact (when adding grease) coefficient of friction μf = 0.06, when the temperature is below - at 25 ℃, μf value increases by 30%, when without grease, μf value should be doubled. 6 rectangle with the short side seat installation size along the bridge to be placed. Rubber bearings conservation 1, laminated rubber bearing maintenance and repair should be regularly checked once problems are detected, should be promptly repaired or replaced. 2, laminated rubber bearings and rubber bearings PTFE slide should check the following: a: whether a slip bearing and void phenomenon; b: bearing shear displacement is too large (shear angle should not exceed 35 °); c: bearing whether an excessive compression; (maximum compression deformation amount not exceeding 0.07te, te of the total rubber bearing layer thickness) d: bearing protective rubber layer is cracking, and other aging hardening phenomenon, and record the location of the crack, crack width and length; e: convex bearing rubber sheet between layers of stiffened plate is uniform and normal; f: PTFE slide on rubber bearings, check the bearing top layer of poly tetrafluoroethylene skateboard is intact, with or without peeling, slide the seat holder if the top surface of the stainless steel plate, is coated with grease discharge 5201-2 and filled PTFE slide rubber bearing storage pit. 3, bearing the ministries should be kept intact and clean. Timely removal of garbage debris around the stand, remove snow and ice in winter, to ensure normal operation of the holder. At the same time should be regularly cleaned sewage, excluding pier, Taiwan cap water, to prevent contact with rubber bearing grease on the beam bottom and pier, the remaining oil and other stations on the cap should be cleaned. Prevent rubber aging, deterioration useless. 2.4.4 uneven beam pivot bearing, bearing appears void or excessive compressive deformation should be adjusted. 2.4.5 laminated rubber bearing shear deformation occurred in large, aging, cracking and so should be replaced. , 2.4.6 of rubber bearings PTFE slide, if the distance between PTFE slide with stainless steel contact surfaces found oil into the sand or grease should be promptly cleaned when dry, and inject new grease oil. Rubber bearing arrangement and form the main structure of the bridge related. Usually in the bearing arrangement we need to consider the following basic principles: (1) the upper structure is a spatial structure, bearing should be able to simultaneously accommodate bridge along the bridge (X direction) and the transverse direction (Y-direction) deformation; (2 ) holder must be able to reliably transmit vertical and horizontal reaction force; (3) the holder should make due to the longitudinal displacement of the beam generated by the deformation of the lateral and vertical displacement, constant as possible to the corner unconstrained; (4) Railway Bridges usually have to set a fixed bearing on each linked beam; (5) when the bridge is located on the ramp, fixed support generally should be located in the downhill direction of the abutment; (6) When the bridge is located in the flat slope, fixed support seat should be located in the direction of travel of the front axle main stage; (7) should be set at a fixed bearing with a large bearing reaction force place; (8) a few feet on the same piers should have similar rotational stiffness ; (9) continuous beam bearing subsidence may occur, you should consider the possibility of making height adjustments. In short, the principles of bridge bearing arrangement is necessary to facilitate the transfer support reactions, but enables the holder to fully adapt to the free deformation of the beam. Our engineering rubber product sales nationwide, selling our products, laminated rubber bearings working principle is based on the elasticity of rubber compression to achieve the vertical beam rotation, shear deformation of the rubber blocks to ensure the horizontal displacement of the beam. Therefore there is no fixed bearing laminated rubber bearings and movable bearing points. Because of its horizontal displacement is by shear deformation of the rubber to achieve, allow horizontal displacement is small, it is suitable for small and medium-span of roads, bridges and railway bridges city. Standard within 20m span bridge, laminated rubber bearings generally adopt. Laminated rubber bearing bridge can be divided into two rectangles and circles, round plate laminated rubber bearings is mainly used for circular piers. Laminated rubber bearing type, height should be determined based on the actual amount of displacement and support reaction force size. Laminated rubber bearing should be mounted horizontally, when necessary Upright, the maximum vertical gradient should ≤2%. Rubber bearing acceptance test items 1, tensile properties (tensile strength, elongation at break, etc.), flexural properties (bending strength, etc.), compression performance (permanent deformation rate, etc.), tear resistance, shear properties (perforation Cut between the interlaminar shear, punching shears), hardness, fatigue resistance, friction and wear properties (coefficient of friction, wear), creep properties (tensile, bending, compression), dynamic mechanical properties (vibration damping automatically forced vibration resonance, forced vibration non-resonant) 2, rubber burning performance include: vertical burn, horizontal combustion, coated fabric flammability, oxygen index 3, rubber weathering (aging, temperature shock, oil, etc.)