Hao-damping steel grid bearing Recommended Supply | slip bearing steel truss manufacturer 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, ball bearing steel such as steel grid bearing structure is flexible, the amount of displacement is normal, is the content of periodic inspections, the need for observation and measurement of their working process, therefore, stressed the need to regularly check the parts close to the situation carefully checker defect, which is subject, in each component must be created close to regularly check the condition before, such as the use of bridge inspection vehicle and erection of temporary support measures light only stand as close as possible to conduct a detailed site inspection. Regular inspection phase, the main emphasis of the steel truss bearing checking the following aspects; steel truss bearing assembly is intact, clean, with or without fracture, dislocation, void. Bearing steel grid is flexible, the actual amount of displacement is normal, fixed bearing anchor pin is intact. Steel truss support cushion stone style whether cracks. Simple stand is aging, cracking or failure. Bearing steel grid is aging, cracking, or without excessive shear deformation or compression rubber layer between each sandwich plate is uniform. No dirty when PTFE slide bearing, aging, tetrafluoroethylene board is intact, rubber block is drawn steel. Basin, fixed steel truss bearing bolt is loose, the exposed parts of the cylinder pots are rust, dust cover type No intact. When the bridge completed and delivered, due to various reasons really a bridge maintenance is not timely, thorough, conservation technology emperor, especially for steel truss bridge bearing parts of the conservation is seriously enough, after years of steel truss support Block can be found using the check, consciousness itself is damaged bearing steel truss supports, most bridges with earlier felt like oil has been replaced, the steel truss and laminated rubber bearings appear rubber aging, deterioration, so that the beam loses free expansion capability, a direct result of the beam end or pier caps, concrete rupture, causing off angle, eating side phenomenon, steel truss bearing plate displacement will cause serious damage to the deck telescopic device, steel truss support seat fixing system loose slip bearing steel grid, dislocation, cylinder pots exposed parts rust, dust cover rupture. Followed by the steel grid plate bearing damage tilt broken, crushed stone concrete support cushions stripped off angle and other diseases. The main cause of the damage is roughly bridge, one bearing steel grid itself substandard quality seismic movable steel truss bearing, low-intensity, lack of capacity, but in terms of design, bridge bearing selection form , layout is unreasonable, bearing edges aside enough width, steel truss support cushion stone concrete strength is low or insufficient support cushion stone to strengthen steel, fixing bolts. Nuts strong enough, etc. Third, the construction, installation and construction in terms of branch-oriented activities cushion stone bearing steel truss beam bottom surface is not flat or pad stone top surface is not level, the mortar filling is not dense, embedded steel inner pad stone not solid, and bearing steel grid connection is not strong, steel bearing corrosion, rust treatment quality is not high.