Automatic tension control system and method thereof

A control system and tensioning technology, applied in the control/regulation system, non-electric variable control, mechanical pressure/force control, etc., can solve the problems of difficult quality monitoring, low tensioning accuracy, unsafe construction, etc., to avoid Electromagnetic interference, improve the tensioning accuracy, and avoid the effect of large measurement errors

Active Publication Date: 2012-05-09
柳州市建桥预应力智能设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an automatic tensioning control system and its method to solve the above-mentioned problems of low tensioning precision, unsafe construction, difficult quality monitoring and complex structure

Method used

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  • Automatic tension control system and method thereof
  • Automatic tension control system and method thereof
  • Automatic tension control system and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] figure 1 Disclosed in is an automatic tensioning control system, including an electric oil pump 1, a hydraulic jack 2 controlled by the electric oil pump 1, and the automatic tensioning control system also includes an automatic tensioning control system controller 3, a data relay Controller 4 and computer 5. The hydraulic jack 2 is equipped with a rod-type displacement sensor 201 that can move with the piston rod, and the rod-type displacement sensor 201 is fixedly installed on the outer circle of the hydraulic jack cylinder (see Figure 3 ~ Figure 4 ), the piston extension 205 of the hydraulic jack is fixedly equipped with a U-shaped connecting plate 204 with a U-shaped groove on the outer circle, and a guide plate 203 that can slide along the U-shaped groove is installed in the U-shaped groove of the U-shaped connecting plate 204 , the guide plate 203 and the pull rod end of the pull rod displacement sensor 201 are connected together by a nut; a piston anti-rotation ...

Embodiment 2

[0060] Image 6 Disclosed in is an automatic tensioning control system for synchronous tensioning control of two hydraulic jacks, which includes two sets of automatic tensioning control system A6 and automatic tensioning control system B7, wherein the automatic tensioning control System A6 is the automatic tension control system described in Embodiment 1, and its detailed structure will not be repeated; the structure of automatic tension control system B7 is basically the same as the automatic tension control system described in Embodiment 1, the difference is that : The automatic tensioning control system B7 does not include the data relay controller 4 and the computer 5, the output end of the drive module 307 of the automatic tensioning control system controller of the automatic tensioning control system B is connected with the automatic tensioning control through the signal transmission cable The input terminal of the data relay controller 4 of system A is connected, so tha...

Embodiment 3

[0063] An automatic tension control method, which is a method of tension control using the automatic tension control system described in Embodiment 1, which includes the following steps (see Figure 7 ):

[0064] Sep1, start the computer 5 and the automatic tension control system controller 3, the automatic tension control system controller 3 sends signals to the four stepper motors 101, and the four stepper motors 101 are all reversed (that is, reversed). Automatically stop when unable to rotate;

[0065] Sep2, the automatic tensioning control system controller 3 sends a closing signal to the relay K104, the relay K104 is connected, the relay K104 controls the main relay 103 of the main motor 102, at this time the main motor 102 is energized, and the electric oil pump 1 starts to work;

[0066] Sep 3. The pressure sensor 202 located on the oil inlet and oil return nozzle of the hydraulic jack is powered on and started to work, and set to zero;

[0067] Sep 4. The controller...

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Abstract

The invention relates to an automatic tension control system and a method thereof, relating to a system and a method for applying pre-stress on a pre-stressed component in civil engineering. The system comprises an electric oil pump, a hydraulic jack, a controller of the automatic tension control system, a data relay controller and a computer. A pull rod type displacement sensor and a pressure sensor are arranged on the hydraulic jack. Control valve rods of left and right control valves of the electric oil pump are connected with a stepping motor. The controller of the automatic tension control system comprises a MCU (Micro-programmed Control Unit) single chip microcomputer, functional keystrokes, a displacement collection unit, a pressure collection unit, a buzzing and alarming unit, a display unit, a driving module, a motor steering output unit, a motor steering and stopping output unit and a motor pulse output unit. The method comprises the steps of tensioning, unloading and the like. According to the system and the method disclosed by the invention, the tension precision can be increased; the tension uncontrolled accident of the pre-stressed reinforcing steel can be effectively avoided; the system and the method have the characteristics of being simple in structure, low in cost, safe, reliable, low in quality monitoring difficulty, simple in method and convenient for operation; and the system and the method are applied to various fields.

Description

technical field [0001] The invention relates to a system and method for applying prestress to prestress components in civil engineering, in particular to an automatic tension control system and method. Background technique [0002] At present, in civil engineering, the traditional prestressed tensioning system for prestressing prestressed members generally includes an oil pump and a hydraulic jack. The pressure gauge is used to control the tension of the prestressed tendons, and the stretching elongation value of the prestressed tendons is measured manually with a ruler. This kind of prestressed tensioning system has the following disadvantages: 1. Due to the large influence of human factors, the measurement accuracy is low, and the measurement results There are large errors; 2. The reading of the pressure gauge is unstable, it is difficult to read accurately, and the reading speed is slow. The reading of the pressure gauge needs to be converted to know the size of the tensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/12G05D15/01
Inventor 罗启顺陆巍岿李春权
Owner 柳州市建桥预应力智能设备有限公司
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