Prestressed tensioning system

Abstract

The invention discloses a prestressed tensioning system. The prestressed tensioning system comprises a master controller as well as a first slave controller and a second slave controller which are respectively and wirelessly connected with the master controller through wireless data transmitting modules; both the first slave controller and the second slave controller are connected with jacks through frequency converters, variable frequency motors and hydraulic pumps in sequence; the two jacks are separately connected with pressure sensors for acquiring pressure of oil inlets and displacement sensors for acquiring the displacement of pistons; the pressure sensors and the displacement sensors are used for transmitting acquired signals to the corresponding slave controllers; the acquired signals are transmitted to the master controller through the slave controllers; the mater controller and a remote monitoring center perform data transmission through a GPRS (General Packet Radio Service) wireless network module; the remote monitoring center is provided with a central server and a terminal; the terminal is connected with the central server through an Internet network. According to the prestressed tensioning system disclosed by the invention, the master controller is used for comparing acquired data of the two jacks and transmitting instructions to the variable frequency motors for enabling the two jacks to synchronous tensioning, so high degree of automation is realized.

Description

technical field [0001] The invention belongs to the field of automatic control and communication, and in particular relates to a prestress tension system. Background technique [0002] As my country's bridge construction has entered a period of rapid development, the design level and construction technology of bridges have also been continuously improved. Bridge construction is developing in the direction of complex and long-span. Prestressed concrete bridges are developing rapidly. Bridges and other projects have also been widely used. The production of prestressed beams is a key link in bridge construction. As a widely used technology, prestressed tensioning technology plays a vital role in the production process of prestressed beams. [0003] In the traditional tensioning process, the pressure of the oil pump is obtained by the operator by reading the data on the pressure gauge. At the same time, the operator uses a steel ruler to measure the elongation of the jack to ens...

AI Technical Summary

Problems solved by technology

This traditional tensioning process has many defects such as insufficient equipment precision, low tensioning control precision, and poor synchronization. There are requirements, each operation link of the tensioning process needs to be controlled manually

[0004] There are a lot of disadvantages in this traditional tensioning technology mainly based on manual operation: the accuracy of tensioning equipment is far from meeting the requirements of bridge construction, and manual operation factors and environmental factors seriously affect the measurement of pressure and stretching length. process, can not really realize the synchronous control of equipment, let alone meet the high standard requirements of technical specifications

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