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The tension hollow hydraulic jack with a capacity of 200 tons are special jacks used for tensioning steel strands and other prestressed tendons. The tension hollow hydraulic jack with a capacity of 200 tons are all through-core hydraulic double-acting jacks. The tension hollow hydraulic jack with a capacity of 200 tons need to be used in conjunction with a high-pressure oil pump. The power for tensioning and tension hollow hydraulic jack is provided by the high-pressure oil of the high-pressure oil pump. According to the different structure, it is divided into front card jack and ordinary through-center jack. Tension hollow hydraulic jack with a capacity of 200 tons are compact in structure, work smoothly during tension, high oil pressure, and large tension force. They are widely used in prestressed construction projects such as highway bridges, railway bridges, hydroelectric dams, and high-rise buildings.
Front jack jacks are mainly used for initial tensioning and single anchor tensioning, and ordinary through-core jacks are mainly used for overall tensioning of group anchors. When installing anchors and jacks, for the straight prestressed tendons, the line of action of the tensile force and the center line of the tunnel should overlap each other during the tensioning process; for the curved prestressed tendons, the line of action of the tensile force should be aligned with the center point of the end of the tunnel. The tangents coincide with each other. When tensioning, the pre-stressed tendons pass through the working anchor, the limit plate and the 200 tons tension hollow hydraulic jack. The tension sequence of the prestressed tendons should meet the design requirements.
The below hydraulic jack is our YDC6500 post tension hollow hydraulic jack, it is customized our customer from US. Tonnage is 650 tons, stroke is 200mm, closed height is 410mm, outer diameter is 557mm. It is more convenient, light and new design jack. It has compact structure, perfect seal performance, light weight, small dimension and many other features. The post tension hydraulic jacks are usually used to the construction of bridge and buildings, railway and subway, water conservancy and hydropower engineering and It is suitable for the tension of group anchors with 1860-2000 sizes, Φ15.24, Φ12.7 strands. The hydraulic jack is used for stressing 27 pc strands, and it need to equip a 60Mpa 4L/min electric oil pump. We also accept to design some special stressing jacks as per customers' requirement.
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