CN202533776U - Pre-stress tensioning process monitoring system - Google Patents
Pre-stress tensioning process monitoring system Download PDFInfo
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- CN202533776U CN202533776U CN2012200107433U CN201220010743U CN202533776U CN 202533776 U CN202533776 U CN 202533776U CN 2012200107433 U CN2012200107433 U CN 2012200107433U CN 201220010743 U CN201220010743 U CN 201220010743U CN 202533776 U CN202533776 U CN 202533776U
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Abstract
The utility model relates to a pre-stress tensioning process monitoring system which comprises a displacement sensor, a pressure sensor, a processor and a display unit, wherein the displacement sensor and the pressure sensor are used to measure the displacement value and the value of the pressure which is loaded in the tensioning process, the processor is a programmable controller PLC, the display unit is a touch screen, both the pressure sensor and the displacement sensor are connected with a switch value input module of the programmable controller PLC, a switch value output port of the programmable controller PLC is connected with a control terminal hydraulic oil pump electric motor of a pre-stress tensioning mechanism, and the output terminal of the programmable controller PLC is in communication connection with the touch screen. The pre-stress tensioning process monitoring system is characterized in that all state variables in the tensioning process are displayed by the touch screen; and parameterization control over the segmentally loaded pressure values, the maintenance time values and the segment numbers in different operating conditions is realized. The pre-stress tensioning process monitoring system is advantaged by simple structure, and convenience and flexibility of on-site operation.
Description
Technical field
The utility model relates to a kind of prestressed stretch-draw PMS, belongs to field of civil engineering.
Background technology
In field of civil engineering such as highway, railway, bridge, building, water conservancy, usually need apply prestress to structure; That uses in the aqueduct construction of particularly present high ferro, the bridge construction of highway and the south water to north is more universal, applies prestressed quality and has directly determined the quality of engineering and the safety of people's lives and properties.Present prestressed work progress comes whole stretching process is monitored through the prestressed stretch-draw supervising device; This supervising device comprises displacement transducer, pressure transducer, processor and display device; Wherein displacement transducer is arranged on above the prestressing mechanism lifting jack; Pressure transducer is arranged in the hydraulic circuit of hydraulic jack, and displacement transducer all links to each other with the inbound port that goes out of processor with pressure transducer, and the output port of display device and processor links to each other; Processor will be handled through pressure transducer and the detected numerical value of displacement transducer; And the data after will handling send display device to, and the workmen can very clearly know current stretching force and displacement, is convenient to the how whole stretching process of workmen and controls in real time; But display device can only show stretching force, displacement and a few kinds of state values; Can not monitor all quantity of states and parameter in the stretching process, cause the workmen can't understand the integral status of stretching process, influence workmen's judgement.
The utility model content
The purpose of the utility model is to solve pre existing stress tension PMS can not monitor all quantity of states and parameter in the stretching process, and proposes a kind of improvement project to pre existing stress tension PMS.
The utility model proposes a kind of stretching process supervisory system for solving the problems of the technologies described above; This stretching process supervisory system comprises and is used for measuring the force value that stretching process loads and displacement transducer and pressure transducer and the processor and the display unit of shift value; Described processor is Programmable Logic Controller PLC; Display unit is a touch-screen; Pressure transducer all links to each other with the analog quantity load module of Programmable Logic Controller PLC with displacement transducer; The switching value output port of Programmable Logic Controller PLC is used for linking to each other with the control end hydraulic oil pump motor of prestressing force pull mechanism, and the output terminal of Programmable Logic Controller PLC is connected with the touch-screen communication, and this touch-screen is used for showing all state variables of stretching process and can realizes parametrization control to force value, retention time value, hop count that segmentation under the different working conditions loads.
Described prestressed stretch-draw PMS also comprises microprinting equipment, and this microprinting equipment links to each other with described touch-screen through its communication interface.
Also be provided with USB interface on the described monitoring touch-screen, be used for the data in the touch-screen are carried out stores archive.
The switching value input port of described Programmable Logic Controller PLC is provided with pushbutton unit, is used to control the break-make of Oil pump electrical machinery.
Described pushbutton unit comprises manual selector button, start button, stop button, scram button.
The switching value input end of described Programmable Logic Controller PLC also is connected with alarm through relay.
Described Programmable Logic Controller PLC adopts the CPU224CN type among the Siemens S7-200, and the switching value input port of this Programmable Logic Controller PLC links to each other with displacement transducer with pressure transducer through EM231/4AI analog quantity load module.
Described monitoring touch-screen adopts TPC7062KS type touch-screen, and this touch-screen is connected with Programmable Logic Controller PLC communication through its RS485 communication interface.
Described microprinting equipment adopts the stylus printer of WH-A52Z20-30E125 and is connected with touch-screen through its RS232 interface.
The beneficial effect of the utility model is: the utility model is through using touch-screen to be the display unit in the prestress supervisory system, opening/stopping with the pressure set points of the state of duty, alarm, force value, shift value, segmentation loading, retention time, process status etc. and monitor Oil pump electrical machinery.And can realize parametrization control to force value, retention time value, hop count that segmentation under the different working conditions loads, the utility model is simple in structure, makes The operation convenient andmeasured flexible.
Description of drawings
Fig. 1 is the stretching process prestress supervisory system structured flowchart of the utility model;
Fig. 2 is the system works schematic diagram of the utility model embodiment;
Fig. 3 is the touch panel monitor system interface of the utility model embodiment
Fig. 4 is that the touch-screen parameter of the utility model embodiment is provided with the interface;
Fig. 5 is that the touch-screen prescription of the utility model embodiment is provided with the interface;
Fig. 6 is the touch-screen filing interface of the utility model embodiment;
Fig. 7 is the stretching force segmentation loading procedure figure of the utility model embodiment.
Embodiment
Further specify below in conjunction with the embodiment of accompanying drawing the utility model.
This supervisory system fundamental diagram is as shown in Figure 1.General prestress can be selected YBZ type electric oil pump and YDC1500 type lifting jack for use with hydraulic jack equipment, changes tensimeter in the hydraulic circuit pressure transducer of CYG1115-60MPa into, and it is output as 0～20mA, precision 1%FS; A KTC-200mm displacement transducer has been installed on the outside of lifting jack, and it can detect the moving displacement of oil cylinder piston, and it is output as 0～20mA, precision 1%FS; PLC selects the CPU224CN type among the Siemens S7-200 for use; Add that an EM231/4AI analog quantity load module connects pressure transducer and displacement transducer; Manual selector button, start button, stop button, scram button etc. are connected to the switching value input port of PLC; The switching value output of PLC can also can be controlled the break-make of hydraulic oil pump motor through the coil of control contactor through the break-make of relay control alarm.The break-make that hand push button can directly be controlled the hydraulic oil pump motor realizes manually control.The monitoring touch-screen adopts TPC7062KS type touch-screen; Be connected with PLC through the RS485 communication interface; Mini-printer adopts the stylus printer of WH-A52Z20-30E125; Be connected with the monitoring touch-screen through the RS232 interface, the USB interface of monitoring touch-screen can connect USB flash disk, is used for the stores archive variable.The monitoring interface of configuration, parameter are provided with interface, formulation management interface, data filing interface, warning interface such as Fig. 2～shown in Figure 5 in touch-screen.Control circuits such as Programmable Logic Controller (PLC), monitoring touch-screen, mini-printer, button are installed in the control box.This system has 4 analog quantity inputs, 2 motors and 2 alarm output controls, can control two stressing equipments simultaneously and work simultaneously, to realize the synchronous tension technology at two ends.
The normal method that adopts the stretching force segmentation to load in the practice of construction process, its procedure chart is as shown in Figure 6.Each force value loads gradually from a certain value and reaches next setting value, and then keeps this force value a period of time, and this process is called one section process that the stretching force segmentation loads, and that in Fig. 6, representes has four sections.At first pierce into steel strand wires in the member and install lifting jack and ground tackle etc.; Close corresponding oil return valve, open and send fuel tap, start oil pump with hand push button earlier; Manual setting is sent fuel tap to make hydraulic oil enter into lifting jack to carry out prestretched, and then beginning subsection tension process.When carrying out subsection tension; Manual button on the control box pushes automated location; PLC starts Oil pump electrical machinery automatically after pressing start button then, and the beginning manual setting send the aperture of fuel tap to increase the pressure in the jack hydraulic loop gradually, and the piston of lifting jack stretches out with steel strand wires through ground tackle simultaneously; Pressure and displacement transducer are sent to pressure and displacement among the PLC, and this process is the 0～T1 section among Fig. 6.When pressure reached the pressure P 1 of setting, PLC control Oil pump electrical machinery stopped automatically, and starts delay procedure, entered into pressurize time-delay stage, i.e. T1 among Fig. 6～T2 section.After delay time arrived, PLC started Oil pump electrical machinery automatically, and manual setting send the aperture of fuel tap to continue pressurization gradually, and steel strand wires continue to stretch, i.e. T2 among Fig. 6～T3 section.When pressure reached the pressure P 2 of setting, PLC control Oil pump electrical machinery stopped automatically, and starts delay procedure, entered into pressurize time-delay stage, i.e. T3 among Fig. 6～T4 section.When repeating that so the pressure segmentation is loaded into the pressure value P 4 of maximum of setting, Oil pump electrical machinery stops, and after delay time finished, the subsection tension process just was through with, and PLC drives alarm output 30 seconds to represent the end of automatic stretching process.At this moment can manually open oil return valve gradually; Make the pressure in the lifting jack drop to zero gradually; And steel strand wires are because the self-locking of ground tackle and can't withdrawing has only a certain amount of elastic recoil, and pressure and displacement are worth in the internal memory or USB flash disk that all is recorded in touch-screen over time in the whole process.This moment, the user can press print button, and with the segmentation controlled pressure value of the stretching process of just having accomplished and corresponding shift value, and the displacement of process and pressure history print through mini-printer.Can carry out stretch-draw next time again after lifting jack unloaded.
In the PLC control program, the pressure value P 1 of subsection tension, P2 etc. can set according to actual needs, but the dwell time also actual needs set, the hop count of subsection tension can be accomplished 5 sections at most.If when having only 3 sections or 4 sections, as long as the force value and the time value of subsequent segment is set at 0, PLC will accomplish the process of 3 sections or 4 sections automatically.Owing in work progress, will constantly change force value and time value,, can the parameter of subsection tension commonly used be carried out formulation management in order to improve the efficient of input according to technological requirement.In the formulation management interface of touch-screen (as shown in Figure 4); Can correspondences such as the pressure set points of subsection tension commonly used, dwell time be input in the corresponding form in a certain formula number; The parameter of being convenient in actual mechanical process, directly call in the corresponding formula number is controlled, and has avoided the regular input that repeats.
In the monitoring interface of touch-screen (as shown in Figure 2); Can show the force value in the jack hydraulic loop in real time, the displacement increment value of the absolute displacement value of jack piston, the shift value when stretch-draw begins, stretching process (tensile elongations of steel strand wires) also can be implemented to show.But the duty of warning and motor pilot lamp display alarm and Oil pump electrical machinery, start button can start the automatic segmentation stretching process, and stop button can finish stretching process, and print button can start the printer prints data.Parameters such as the pressure set points of subsection tension, dwell time can be made amendment in segmentation loading parameters form; Also can in the formulation selection dialog box, select corresponding formula number, will the segmentation of this prescription be loaded required parameter and be filled up to automatically in the segmentation loading parameters form.In actual stretching process; When subsection tension implemented a certain section, the numbering of this section will redden in the segmentation loading parameters form, was used for instruction program to carry out this section; When implementing the pressurize time-delay during stage, the remaining time can dynamically show in the form in excess time.
Parameter at touch-screen is provided with (as shown in Figure 3) in the interface, but preset parameters such as setting unit title, steel bundle kind are convenient to print, file and are preserved.In the filing interface of touch-screen (as shown in Figure 5), can show the change curve of pressure and displacement in the stretching process in real time, also can the change curve of former stretching process be accessed and show.
With parameter shown in Fig. 2 monitoring interface figure is that example specifies principle of work of the present invention.This system has been applied in the construction of highway overpass prestressed component.
At first install prestress tensioning equipment and supervisory system, steel strand wires are pierced in the member and install lifting jack and ground tackle etc., close corresponding oil return valve, open and send fuel tap.Supervisory system at first enters into parameter the interface is set after turning on the power switch; The user can import corresponding filing parameter; Can enter into the formulation management interface then, import the parameter of several kinds of required prescriptions of this member stretch-draw, the segmentation loading parameters form that also can directly enter into monitoring interface is made amendment; Parameter as shown in Figure 2, this is the process of three sections stretch-draw of a branch.Manual selector button on the control box is dialled in manual position; Earlier start Oil pump electrical machinery with hand push button; Manual setting is sent fuel tap to make hydraulic oil enter into lifting jack to carry out prestretched; Stop Oil pump electrical machinery then, manual selector button is dialled at automated location, begins to carry out the automatic segmentation stretching process.Press start button or the start button on the monitoring interface on the control box; Oil pump electrical machinery starts automatically; Corresponding pilot lamp is lighted; The beginning manual setting send the aperture of fuel tap to increase the pressure in the jack hydraulic loop gradually, and the piston of lifting jack stretches out with steel strand wires through ground tackle simultaneously, and pressure and displacement transducer are sent to pressure and displacement among the PLC.When pressure reached the pressure 5.92MPa of setting, PLC control Oil pump electrical machinery stopped automatically, and starts delay procedure, entered into 30 seconds pressurize time-delay stage.After delay time arrives; PLC starts Oil pump electrical machinery automatically, and manual setting send the aperture of fuel tap to continue pressurization gradually, and steel strand wires continue to stretch; When pressure reaches the pressure 20.00MPa of setting; PLC control Oil pump electrical machinery stops automatically, and starts delay procedure, enters into 30 seconds pressurize time-delay stage.After delay time arrives; PLC starts Oil pump electrical machinery automatically, and manual setting send the aperture of fuel tap to continue pressurization gradually, and steel strand wires continue to stretch; When pressure reaches the pressure 28.29MPa of setting; PLC control Oil pump electrical machinery stops automatically, and starts delay procedure, enters into 30 seconds pressurize time-delay stage.After delay time finished, PLC drove alarm and exports 30 seconds to represent the end of automatic stretching process.At this moment can manually open oil return valve gradually; Make the pressure in the lifting jack drop to zero gradually; And steel strand wires are because the self-locking of ground tackle and can't withdrawing has only a certain amount of elastic recoil, and pressure and displacement are worth in the internal memory or USB flash disk that all is recorded in touch-screen over time in the whole process.The user switches in the filing interface (as shown in Figure 5); Check the change curve of pressure and displacement in this stretching process; Also can in monitoring interface, press print button; With the segmentation controlled pressure value of the stretching process of just having accomplished and corresponding shift value, and the displacement of process and pressure history print through mini-printer.Can carry out stretch-draw next time again after lifting jack unloaded.
The pressure of stretching process and displacement curve and data are analyzed, judged the quality of this time stretching process.If quality problems such as spillage can be judged its position through the variation of pressure and displacement curve, and guide and repair.The stretch-draw data of each member of one day completion are transferred to from USB flash disk carry out data filing the computing machine.
Claims (9)
1. prestressed stretch-draw PMS; Comprise and be used for measuring the force value that stretching process loads and displacement transducer and pressure transducer and the processor and the display unit of shift value; It is characterized in that: described processor is Programmable Logic Controller PLC; Display unit is a touch-screen; Pressure transducer all links to each other with the analog quantity load module of Programmable Logic Controller PLC with displacement transducer; The switching value output port of Programmable Logic Controller PLC is used for linking to each other with the control end hydraulic oil pump motor of prestressing force pull mechanism, and the output terminal of Programmable Logic Controller PLC is connected with the touch-screen communication, and this touch-screen is used for showing all state variables of stretching process and can realizes parametrization control to force value, retention time value, hop count that segmentation under the different working conditions loads.
2. prestressed stretch-draw PMS according to claim 1 is characterized in that: described prestressed stretch-draw PMS also comprises microprinting equipment, and this microprinting equipment links to each other with described touch-screen through its communication interface.
3. prestressed stretch-draw PMS according to claim 2 is characterized in that: also be provided with USB interface on the described touch-screen, be used for the data in the touch-screen are carried out stores archive.
4. prestressed stretch-draw PMS according to claim 1 and 2 is characterized in that: the switching value input port of described Programmable Logic Controller PLC is provided with pushbutton unit, is used to control the break-make of Oil pump electrical machinery.
5. prestressed stretch-draw PMS according to claim 4 is characterized in that: described pushbutton unit comprises manual selector button, start button, stop button, scram button.
6. prestressed stretch-draw PMS according to claim 1 and 2 is characterized in that: the switching value input end of described Programmable Logic Controller PLC also is connected with alarm through relay.
7. prestressed stretch-draw PMS according to claim 1; It is characterized in that: described Programmable Logic Controller PLC adopts the CPU224CN type among the Siemens S7-200, and the switching value input port of this Programmable Logic Controller PLC links to each other with displacement transducer with pressure transducer through EM231/4AI analog quantity load module.
8. prestressed stretch-draw PMS according to claim 1 is characterized in that: described touch-screen adopts TPC7062KS type touch-screen, and this touch-screen is connected with Programmable Logic Controller PLC communication through its RS485 communication interface.
9. prestressed stretch-draw PMS according to claim 2 is characterized in that: described microprinting equipment adopts the stylus printer of WH-A52Z20-30E125 and is connected with touch-screen through its RS232 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200107433U CN202533776U (en) | 2012-01-11 | 2012-01-11 | Pre-stress tensioning process monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200107433U CN202533776U (en) | 2012-01-11 | 2012-01-11 | Pre-stress tensioning process monitoring system |
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| CN202533776U true CN202533776U (en) | 2012-11-14 |
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| CN2012200107433U Expired - Fee Related CN202533776U (en) | 2012-01-11 | 2012-01-11 | Pre-stress tensioning process monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108563182A (en) * | 2018-04-02 | 2018-09-21 | 徐州市工大三森科技有限公司 | Cage guide rope auto-tensioning intelligence control system and control method in mine hoisting system |
| CN110440854A (en) * | 2019-07-25 | 2019-11-12 | 湖北省水利水电规划勘测设计院 | Prestressing force aqueduct based on sensing network monitors system and method |
-
2012
- 2012-01-11 CN CN2012200107433U patent/CN202533776U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108563182A (en) * | 2018-04-02 | 2018-09-21 | 徐州市工大三森科技有限公司 | Cage guide rope auto-tensioning intelligence control system and control method in mine hoisting system |
| CN110440854A (en) * | 2019-07-25 | 2019-11-12 | 湖北省水利水电规划勘测设计院 | Prestressing force aqueduct based on sensing network monitors system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20160111 |