九鼎彩票快三预测⎛⎝XrCzY⎠⎞ Construction procedure of prestressed tension equipment using linear displacement sensor - industry trends - Shenzhen easie Electric Co., Ltd

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Construction steps of prestressed tension equipment using linear displacement sensor

Release date: June 17, 2019 Hits: 77

At present, in civil engineering, the traditional pre-stressed tensioning system for prestressed components generally includes oil pump and hydraulic jack. During the construction of the system, the tension force exerted by the hydraulic jack is controlled by the construction personnel observing the oil pressure gauge on the oil pump, and the stretching elongation value of the prestressing reinforcement is measured manually with a ruler Because of its complicated structure and high cost, it can not reach the real automatic tension control, so it has not been widely used. The real automatic tension control system controller receives and processes the signal transmitted by the communication cable, packs and sends the data and transmits the data to the data relay controller. The data relay controller converts the data transmission signal, so that the data transmission process has strong anti-interference and long transmission distance, up to I It can meet the requirements of long-distance control, and its quality monitoring is less difficult, and the use of pull rods straight line Displacement sensor The precision of control is very high when the tension and retraction of steel strand are tested. Therefore, the invention is suitable for operation in various sites, especially in the interior of prestressed members or in more concealed sites. The following are the steps of the tensioning system:

 Prestressed construction steps

Sepl Start the computer and the controller of the automatic tension control system. The controller of the automatic tension control system sends signals to the four stepper motors, and the four stepper motors are reversed, and stop automatically when they can not rotate ;

Sep2 Automatic tension control system controller to relay K Make a close signal, relay K On, relay K Control the main relay of the main motor. At this time, the main motor is powered on and the electric oil pump starts to work ;

Sep 3 The pressure sensor on the oil inlet and return nozzles of the hydraulic jack is powered on to start working and set to zero ;

Sep 4 Automatic tension control system controller direction two Step motor No.1 sends out clockwise rotation signal, two Step motor No.1 rotates clockwise until it can't stop automatically ;2 After the step motor No, I Step motor No.1 starts to turn the control valve clockwise to supply oil to the hydraulic jack to push the piston to move and the hydraulic jack starts to work ;

Sep 5 The pressure sensors installed on the oil inlet and return nozzles of the hydraulic jack start to detect the pressure, and transmit the signal to the controller of the automatic tension control system. After the signal is processed by the automatic tension control system controller, the signal is transmitted to the computer through the data relay controller, and the working pressure and return pressure are displayed on the computer screen in real time, and the signal is transmitted to the computer through the software installed in the computer The working tension can be calculated automatically by the formula ;

Sep 6 After the piston of hydraulic jack moves, it moves with pull rod displacement transmitter Displacement sensor The signal is output to the controller of the automatic tension control system, which processes the signal and transmits it to the computer through the data relay controller, and the displacement is displayed on the computer screen in real time;

Sep 7 Input the working parameters into the computer, and the controller of the automatic tension control system receives and controls the stepping motor to pressurize the hydraulic jack according to the input working parameters, so that the hydraulic jack can complete the tensioning process ;

Sep 8 When the tensioning process is completed, the unloading process is started ;

Sep 9 Pulling rope Displacement sensor Return to zero, that is to complete a tensioning process.


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