First, characteristics of Intelligent Prestressed Tension:
The prestressed intelligent tensioning system adopts liquid crystal touch screen and PLC programming control system. The structure is simple and the performance is stable and reliable. A digital pressure meter is installed on the high pressure oil pump, and a displacement sensor is mounted on the jack. During the tensioning process, the oil pump pressure and the jack elongation are transmitted to the computer through the sensor to the PLC control box, and the computer is controlled to synchronize the two ends at the same time, and the data can be printed in real time.
Two, Technical parameters of Tension Intelligent Tensioning Machine:
Technical index of tension system
Accuracy of force measuring system: 0.3%f.s
Displacement measurement accuracy: 0.05%
Top to pull imbalance: 5kn
Working voltage of hydraulic station: 380 + 10%
The operating voltage of the control system is 220 + 10%
Use temperature: - 20 DEG C - 50
Hydraulic pumping station
Maximum oil pressure: 60MPa
Flow rate: 3L/min
Motor power; 3kw
Nominal tensile force: 270 ~ 6000kn
Stretching stroke: less than 200mm
Travel tolerance: + 2mm
Configuration of Intelligent Automatic Tension Equipment:
A jack and two pumping stations: 2 jacks under 250 tons, 2 high pressure pumping stations, 1 sets of computer control systems (computer, software system, wireless communication system, oil pipe, displacement connection line)
A jack and four pumping stations: 2 Jack less than 250 tons, 2 high pressure pumping stations, 1 sets of computer control systems (computer, software system, wireless communication system, oil pipe, displacement connection line), 2 intelligent Jack (mostly used for cast-in-place beam)
Advantages of intelligent tensioning equipment:
(1) in the double control tensioning, the synchronization is better, and it can be done at the same time.
(2) the feeding speed of two oil pumps can control the loading rate intelligently.
(3) the computer automatically calculates the results, reducing the workload of the operator.
(4) the control stress in the tension process is more accurate and intuitive than the traditional stretching method, and the tension is automatically repaired after tensioning.
(5) the fourth generation intelligent tensioning system is newly upgraded, and the wireless signal is not disturbed by the outside world.
(6) the fourth generation intelligent tensioning system has accumulated rich experience in the tension of precast beam and cast-in-place beam. The software system has been upgraded comprehensively, and the software operation system has been designed in place, which can effectively complete the various indicators of field construction.
The fourth generation of Post Tension Intelligent Tensioning Equipment, for the original system often appear the jack can not return to zero, oil pump can not enter the oil and other faults to comprehensively update and improve the process, in the tension process, when the unqualified elongation, the computer can automatically alarm.