Leite steel strand anchor manufacturer supplies a set of 4 pre-stressed anchors for bridges with 15 holes

Description :

Introduction to Tensioning Pre stress

　　Intelligent control of bridge tensioning, standardizing the tensioning process to achieve intelligent control of tensioning programs, without interference from human or environmental factors; The elements of the tensioning process, such as loading program, loading rate, and holding time, fully comply with the requirements of bridge design and construction technical specifications.

　　Special tensioning equipment data eliminates the possibility of human rewriting of data and enables genuine quality traceability. Implement remote monitoring function, facilitate quality management, and improve management efficiency. Solved the common problem of inaccurate stress control and even data tampering through programming in the industry, making tension data more realistic!

　　Pre stress tensioning control: A main control computer can simultaneously control two or four jacks for synchronous and symmetrical tensioning. This system has a unique frequency conversion compensation function that can control the synchronous tensioning error between each jack within ± 0.5MPa and the elongation error within 5mm meters, achieving the "multi top synchronous and symmetrical tensioning" process to apply stress, avoiding human errors, and controlling the pre stress value applied during the pre stress tensioning construction process, reducing the error range from ± 15% in traditional tensioning to ± 1%.

　　Tensioning equipment parameters

　　Pump station pressure: 70Mpa

　　Working voltage of hydraulic station: 380V ± 10%

　　End pressure of pressure relief: 5Mpa

　　Motor power: 4kw

　　Displacement measurement accuracy:<0.25%

　　Displacement accuracy resolution: 0.1mm

　　Pressure measurement accuracy:<1%

　　Pressure accuracy resolution: 0.001Mpa

　　Working voltage of control system: 220V ± 10%/24V

　　Applicable temperature: -20 ℃ -50 ℃

　　Cylinder stroke: 200mm

　　System pressure: 50Mpa

　　Synchronous displacement difference: 3mm

　　Synchronous tension difference: 50-150KN

　　Fuel tank capacity: 144L

　　Equipment dimensions: 108 * 75 * 128cm

　　At present, in the traditional prestressing tensioning process, the pressure gauge reading of the tensioning equipment is commonly used to directly control the tensioning force. However, traditional tensioning equipment generally has problems such as unstable pressure gauge readings and large control errors of oil pressure gauges. Check whether there are cracks in the oil pipe connecting the oil pump and the jack, and whether the joint is secure: when using high-pressure hoses, the bending radius should not be less than 200mm, and the direction of movement of the jack piston should be consistent with the actual tensioning working state during calibration. The calibration period of the tensioning equipment should not exceed six months or follow engineering regulations. In tensioning and top pressure operations, it is strictly prohibited for the working oil pressure to exceed the rated pressure

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• Steel strand anchorage