Sliding Bearings, Hao-engineering rubber, two-way sliding seat provided by the Engineering Rubber Co., Ltd. Hengshui HaoTong. Sliding Bearings, Hao-engineering rubber, two-way sliding seat is Hengshui HaoTong Engineering Rubber Co., Ltd. (www.htgcxj.com) launched this new upgrade, the above picture is only for reference, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Liu. Ball bearing enhance product quality supervision is a very important task, by a nationally recognized testing unit to strengthen the authority of the laminated rubber bearing product quality testing room is very necessary, but the last layer encountered some testing unit, testing equipment itself incomplete, the ball bearing detection methods are not familiar, rubber bearing testing personnel untrained, affecting the test results, so that when this amendment industry standards, in order to facilitate the application, the original "mechanical properties of the finished laminated rubber bearing Highway Bridges Detection Rules "(JT3132.3-90) as" roads and bridges laminated rubber bearings "(JT / T 4-2004) standard normative appendix directly included, its contents, in the practical application of basic Internet frame slip Move seat, and to consider appropriate adjustments were made to add standards in order to better control product quality slip bearing, determine the merits of the product. In the standard, first testing equipment, testing means multi-directional sliding bearings, inspectors made more demands. Ball bearing some laboratories, it is not for the press as a ball bearing mechanical testing and design, there are a lot of press in the 20th century, 60,70 obsolete equipment. Ball bearings in many places can not guarantee the accuracy of the mechanical properties of the test seat. So with the progress of time, a lot of things behind must be updated in order to reduce unnecessary equipment behind boiled misjudgment occurred during the test, in the past there have been a result of the press, under the bearing thickness is too thin, not stiff enough, the test their structural deformation of the circumstances test, in addition, the ball bearing carrier plate plane size is too small, spherical bearings size has exceeded the carrying board inch, resulting in local stress affect the validity of the test results. For continuous length larger bridge, ball bearings should be located in the middle of the long bridge piers, rubber bearings at both ends to reduce the amount of displacement bearing. Using string defense a little yes, rubber bearings due to temperature changes do not produce a reaction force, and a small amount of displacement, the disadvantage is the linear displacement of the beam caused by changes in the amount of the mounting structure so that the ends are not parallel to the bridge and the wide bridge, beam change intervals are not parallel beam bearing arrangement, according to FIG consider, then, the ball bearing on any case at all want the same support line arranged in a certain direction support. For overcoming the negative reaction force bearing arrangement of two-way sliding seat, if the fulcrum of a negative reaction force, the structural part of the bridge will produce unpredictable stress, it is necessary to take special measures for the ball bearing set more than two consecutive fixed When the bearing, the ball bearing due to temperature in addition to the horizontal forces caused by the change, the need to consider the horizontal force generated by the rotation of the beam.