CN101989091A - Prestress automatic tensioning control system and method - Google Patents
Prestress automatic tensioning control system and method Download PDFInfo
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- CN101989091A CN101989091A CN2009100557635A CN200910055763A CN101989091A CN 101989091 A CN101989091 A CN 101989091A CN 2009100557635 A CN2009100557635 A CN 2009100557635A CN 200910055763 A CN200910055763 A CN 200910055763A CN 101989091 A CN101989091 A CN 101989091A
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Abstract
The invention discloses a prestress automatic tensioning control system and method. The method comprises the following steps of: firstly, setting a prestress control value of a member to be tensioned in a computer; then, starting an oil pump and driving a jack for tensioning under the control of computer software; meanwhile, carrying out data collection through a data collection card, a hydraulic sensor and a displacement sensor; converting the collected hydraulic data into tensioning force data by the computer by using a rated linear regression formula of the jack; judging whether the tensioning force data reaches the prestress control value or not; and if yes, recording relevant data to complete the prestress tensioning. Compared with the traditional prestress tensioning scheme, the invention has the advantages that the computer software control is full automatic control, the efficiency is high, and the cost is relatively low.
Description
Technical field
The present invention relates to the prestressed stretch-draw field, automatic stretch-draw control system of particularly a kind of prestress and method.
Background technology
In actual production, prestressed stretch-draw refers in member the afterburning in advance suffered load of steel construction of dealing with itself, and suffered load comprises the load, live load, wind load, snow load, seismic loading of structure own wt etc.Before member bears external load, the tension concrete is applied compressive pre-stress, can improve the rigidity of member, postpone the time that the crack occurs, increase the permanance of member.General prestressed stretch-draw will be used lifting jack, anchor slab etc.
Present prestressed stretch-draw mainly is manually to control unavoidable like this can going wrong.In order to address this problem, people have also proposed to replace manually-operated scheme with a prestressing force pull system, but these schemes all have some following defectives:
1, application number is " 00262315 ", name is called the patented claim of " Based Intelligent Control pre-stress stretching device ", and application number is " 03111812 ", name is called the patented claim of " full-automatic pre-stress stretching device ", also having application number is " 03214586 ", name is called the patented claim of " full-automatic pre-stress stretching device ": the prestressed stretch-draw scheme that three above patented claims provide is all controlled by single-chip microcomputer, can only guarantee that the stretch-draw precision is in 1% scope.In addition, the A/D conversion accuracy of the single-chip microcomputer that it adopts is limited, and this has all limited the application of such scheme.
2, application number is " 200720140836 ", name is called the patented claim of " prestress steel hinge line stretch-draw automatic control system ": this patented claim has also adopted single-chip microcomputer to control, also adopt four lifting jack to carry out prestressed stretch-draw, so its structure just seems complicated and unstable, and cost is also very high.
As seen from the above, pressing for provides a kind of new prestressing stretching technique scheme, and it adopts the software control of computing machine, can full automaticly finish relevant prestressed stretch-draw.
Summary of the invention
The purpose of this invention is to provide automatic stretch-draw control system of a kind of prestress and method, can full automaticly finish the prestressed stretch-draw project in the engineering.
On the one hand, the invention provides the automatic stretch-draw control system of a kind of prestress, comprise the displacement transducer that connects successively, lifting jack, solenoid valve, oil pump, hydraulic pressure transducer, described displacement transducer one end connects the presstressed reinforcing steel with member coupling to be tensioned, the other end connects the movable end of described lifting jack, the oil cylinder of described lifting jack connects described oil pump by described solenoid valve, described hydraulic pressure transducer is arranged on the described oil pump, also comprise data collecting card and connected computing machine with stretch-draw control module, described data collecting card connects described displacement transducer respectively, solenoid valve and hydraulic pressure transducer, described computing machine are controlled described data collecting card by the stretch-draw control module and are carried out data acquisition and signal transmission and the data of gathering are analyzed and shown.
The stretch-draw control module of described computing machine further comprises module and control module is set, the described module that is provided with is in order to be provided with the stretching force controlling value of described member to be tensioned, described control module is carried out data acquisition and signal transmission in order to control described data collecting card, and cooperates described value of setting that module is set the data of gathering are analyzed and to be shown.
The quantity of described solenoid valve is two, and the oil cylinder of described lifting jack connects an end of described two solenoid valves by oil pipe, and the other end of described two solenoid valves connects described oil pump, and the control end of described two solenoid valves connects described data collecting card.
On the other hand, the present invention also provides a kind of automatic stretching control method of prestress based on the automatic stretch-draw control system of described prestress, may further comprise the steps:
4.1, with what the stretching force controlling value of described member to be tensioned was imported described computing machine stretch-draw control module module and storage be set;
4.2, open oil pump and drive described jack tension, the described data collecting card of described computer control is gathered displacement and hydraulic data by described displacement transducer and hydraulic pressure transducer, and described hydraulic data is imported the linear regression formula of demarcation of described lifting jack and exported the stretching force data;
4.3, judge whether the stretching force data of described step 4.2 output reach the member stretching force controlling value of described step 4.1 input, if then change next step, then change step 4.2 if not and control described oil pump pressurization;
4.4, the stretching force data of displacement data that record this moment, displacement transducer was gathered and step 4.2 output and show at described computing machine, send shutdown signal and stop associative operation to described solenoid valve simultaneously.
The quantity of described solenoid valve is two, and the oil cylinder of described lifting jack connects an end of described two solenoid valves by oil pipe, and the other end of described two solenoid valves connects described oil pump, and the control end of described two solenoid valves connects described data collecting card.
In the described step 4.2, the described data collecting card of described computer control is opened described solenoid valve, and described oil pump is described lifting jack fuel feeding by solenoid valve.
When the stretching force data in the described step 4.3 do not reach described member stretching force controlling value, judge whether the oil pressure of gathering is normal, if normally then change step 4.2 and control described oil pump pressurization, if undesiredly then stop described oil pump.
Adopt automatic stretch-draw control system of a kind of prestress of the present invention and method, it can be provided with the prestress controlling value of member to be tensioned earlier in computing machine, then under control of computer software, open oil pump and drive lifting jack and carry out stretch-draw, pass through data collecting card simultaneously, hydraulic pressure transducer and displacement transducer carry out data acquisition, computing machine will be gathered the hydraulic data that comes and be converted into the stretching force data by the linear regression formula of the demarcation of lifting jack, and judge whether the stretching force data reach described prestress controlling value, if reach and then write down related data, finish prestressed stretch-draw.The present invention compares with present prestressed stretch-draw scheme, has the advantage of the Automatic Control of computer software control, and efficient height and cost are relatively low.
Description of drawings
Fig. 1 is the structural drawing of system of the present invention;
Fig. 2 is the schematic diagram of system of the present invention;
Fig. 3 is the process flow diagram of the method for the invention.
Embodiment
Further specify technical scheme of the present invention below in conjunction with drawings and Examples.
Referring to Fig. 1 and Fig. 2, the invention provides the automatic stretch-draw control system 100 of a kind of prestress, comprise the displacement transducer 3 that connects successively, lifting jack 4, oil pipe 5, solenoid valve 6, oil pump 7, hydraulic pressure transducer 9, tensimeter 8 and power switch 10, described displacement transducer 3 one ends connect the presstressed reinforcing steel 2 with member 1 coupling to be tensioned, the other end connects the movable end of described lifting jack 4, the oil cylinder of described lifting jack 4 connects described oil pump 7 by described solenoid valve 6, described hydraulic pressure transducer 9 is arranged on the described oil pump 7, also comprise data collecting card 11 and connected computing machine 12 with stretch-draw control module 12a, described data collecting card 11 connects described displacement transducer 3 respectively, solenoid valve 6 and hydraulic pressure transducer 9, described computing machine 12 carries out data acquisition and signal transmission by the described data collecting card 11 of Tension Control unit controls and the data of gathering is analyzed and shown.
Referring to Fig. 2, the stretch-draw control module 12a of described computing machine 12 is the Control Software that is loaded in the computing machine 12, stretch-draw control module 12a further comprises module and control module is set, the described module that is provided with is in order to be provided with the stretching force controlling value of described member 1 to be tensioned, described control module is carried out data acquisition and signal transmission in order to control described data collecting card 11, and cooperates described value of setting that module is set the data of gathering are analyzed and to be shown.Specifically, control module control bit displacement sensor 3, hydraulic pressure transducer 9, solenoid valve 6 and pump switch 7a carry out relevant action.
As an embodiment, the quantity of described solenoid valve 6 is two, the oil cylinder of described lifting jack 4 connects an end of described two solenoid valves 6 by oil pipe, and the other end of described two solenoid valves 6 connects described oil pump 7, and the control end of described two solenoid valves 6 connects described data collecting card 11.
Referring to Fig. 3, the present invention also provides a kind of prestress automatic stretching control method 200, and it is realized based on the automatic stretch-draw control system 100 of described prestress, specifically may further comprise the steps:
201, to the stretching force controlling value of the described member 1 to be tensioned of computing machine 12 input.
With what the stretching force controlling value of described member 1 to be tensioned was imported described computing machine 12 stretch-draw control module 12a module and storage be set;
202, system power-up and open oil pump 7.
When oil pump 7 was opened, the described data collecting card 11 of described computing machine 12 controls was opened described solenoid valve 6, and described oil pump 7 is described lifting jack 4 fuel feeding by solenoid valve 6.
203, oil pump 7 drives lifting jack 4 stretch-draw, and computing machine 12 receives image data and exports lifting jack 4 stretching force data.
204, whether the stretching force data of step arrive the stretching force controlling value of step 201 in the judgement.
Judge that whether the stretching force data of described step 203 output reach the member 1 stretching force controlling value of described step 201 input, if then change step 206, then change step 205 if not.
205, judge whether the oil pressure data of gathering are normal, if normally then change step 203 and control described oil pump 7 pressurizations, if the undesired step 206 of then changeing.
206, record displacement data this moment and stretching force data, and stop associative operation.
The displacement data that record this moment, displacement transducer 3 was gathered and the stretching force data of step 203 output also show at described computing machine 12, send shutdown signal and stop associative operation to described solenoid valve 6 simultaneously.
As an embodiment, the quantity of described solenoid valve 6 is two, the oil cylinder of described lifting jack 4 connects an end of described two solenoid valves 6 by oil pipe, and the other end of described two solenoid valves 6 connects described oil pump 7, and the control end of described two solenoid valves 6 connects described data collecting card 11.In addition, in prestressed stretch-draw, can preset in critical program and hold the lotus time, hold after the lotus time begins, auto stop is held lotus, holds the lotus time to finish the back and recover stretch-draw.
It is pointed out that the automatic stretching control method 200 of a kind of prestress of the present invention is identical or similar with the automatic stretch-draw control system 100 of a kind of prestress of the present invention on principle and embodiment, so repeating part repeats no more.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of above embodiment.
Claims (7)
1. automatic stretch-draw control system of prestress, comprise the displacement transducer that connects successively, lifting jack, solenoid valve, oil pump, hydraulic pressure transducer, described displacement transducer one end connects the presstressed reinforcing steel with member coupling to be tensioned, the other end connects the movable end of described lifting jack, the oil cylinder of described lifting jack connects described oil pump by described solenoid valve, described hydraulic pressure transducer is arranged on the described oil pump, it is characterized in that, also comprise data collecting card and connected computing machine with stretch-draw control module, described data collecting card connects described displacement transducer respectively, solenoid valve and hydraulic pressure transducer, described computing machine are controlled described data collecting card by the stretch-draw control module and are carried out data acquisition and signal transmission and the data of gathering are analyzed and shown.
2. control system as claimed in claim 1, it is characterized in that, the stretch-draw control module of described computing machine further comprises module and control module is set, the described module that is provided with is in order to be provided with the stretching force controlling value of described member to be tensioned, described control module is carried out data acquisition and signal transmission in order to control described data collecting card, and cooperates described value of setting that module is set the data of gathering are analyzed and to be shown.
3. control system as claimed in claim 1 or 2, it is characterized in that, the quantity of described solenoid valve is two, the oil cylinder of described lifting jack connects an end of described two solenoid valves by oil pipe, the other end of described two solenoid valves connects described oil pump, and the control end of described two solenoid valves connects described data collecting card.
4. the automatic stretching control method of the prestress based on the described system of claim 1 is characterized in that, may further comprise the steps:
4.1, with what the stretching force controlling value of described member to be tensioned was imported described computing machine stretch-draw control module module and storage be set;
4.2, open oil pump and drive described jack tension, the described data collecting card of described computer control is gathered displacement and hydraulic data by described displacement transducer and hydraulic pressure transducer, and described hydraulic data is imported the linear regression formula of demarcation of described lifting jack and exported the stretching force data;
4.3, judge whether the stretching force data of described step 4.2 output reach the member stretching force controlling value of described step 4.1 input, if then change next step, then change step 4.2 if not and control described oil pump pressurization;
4.4, the stretching force data of displacement data that record this moment, displacement transducer was gathered and step 4.2 output and show at described computing machine, send shutdown signal and stop associative operation to described solenoid valve simultaneously.
5. control method as claimed in claim 4, it is characterized in that, the quantity of described solenoid valve is two, the oil cylinder of described lifting jack connects an end of described two solenoid valves by oil pipe, the other end of described two solenoid valves connects described oil pump, and the control end of described two solenoid valves connects described data collecting card.
6. control method as claimed in claim 5 is characterized in that, in the described step 4.2, the described data collecting card of described computer control is opened described solenoid valve, and described oil pump is described lifting jack fuel feeding by solenoid valve.
7. control method as claimed in claim 4, it is characterized in that, when the stretching force data in the described step 4.3 do not reach described member stretching force controlling value, judge whether the oil pressure of gathering is normal, if normally then change step 4.2 and control the pressurization of described oil pump, if undesiredly then stop described oil pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100557635A CN101989091A (en) | 2009-07-31 | 2009-07-31 | Prestress automatic tensioning control system and method |
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| CN2009100557635A CN101989091A (en) | 2009-07-31 | 2009-07-31 | Prestress automatic tensioning control system and method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296826A (en) * | 2011-06-08 | 2011-12-28 | 重庆大学 | Dual-pressure sensor rising and tensioning method of steel stranded wire stay rope |
| CN102323102A (en) * | 2011-06-24 | 2012-01-18 | 湖南大学 | Control method for tensioning force of hydraulic jack |
| CN102431090A (en) * | 2011-10-25 | 2012-05-02 | 南开大学滨海学院 | Fiber grating precast beam prestress intelligent tensioning control system and implementation method thereof |
| CN102444290A (en) * | 2011-09-16 | 2012-05-09 | 柳州市建桥预应力机械厂 | Automatic tension control system and method thereof |
| CN102953550A (en) * | 2012-09-29 | 2013-03-06 | 招商局重庆交通科研设计院有限公司 | Manual-automatic integrated tensioning system |
| CN103741953A (en) * | 2013-12-20 | 2014-04-23 | 广西科技大学 | Automatic prestress tensioning control system |
| CN104949849A (en) * | 2015-04-27 | 2015-09-30 | 同济大学 | Jack demarcating and calibrating methods |
| CN104965533A (en) * | 2015-04-27 | 2015-10-07 | 同济大学 | Pre-stress single-end single-jack intelligent tensioning control system |
| CN106393423A (en) * | 2016-08-25 | 2017-02-15 | 宁波建工广天构件有限公司 | Full-automatic hydraulic tensioning device and use method thereof |
| CN109683647A (en) * | 2019-02-02 | 2019-04-26 | 中铁十五局集团第一工程有限公司 | A kind of prestressing force automatic tensioning control system and method |
| CN113818349A (en) * | 2021-09-01 | 2021-12-21 | 厦门路桥建设集团有限公司 | Bridge hogging moment tensioning method, device, equipment and readable storage medium |
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2009
- 2009-07-31 CN CN2009100557635A patent/CN101989091A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296826A (en) * | 2011-06-08 | 2011-12-28 | 重庆大学 | Dual-pressure sensor rising and tensioning method of steel stranded wire stay rope |
| CN102323102A (en) * | 2011-06-24 | 2012-01-18 | 湖南大学 | Control method for tensioning force of hydraulic jack |
| CN102323102B (en) * | 2011-06-24 | 2013-02-27 | 湖南大学 | Control method for tensioning force of hydraulic jack |
| CN102444290A (en) * | 2011-09-16 | 2012-05-09 | 柳州市建桥预应力机械厂 | Automatic tension control system and method thereof |
| CN102444290B (en) * | 2011-09-16 | 2013-08-28 | 柳州市建桥预应力机械厂 | Automatic tension control system and method thereof |
| CN102431090A (en) * | 2011-10-25 | 2012-05-02 | 南开大学滨海学院 | Fiber grating precast beam prestress intelligent tensioning control system and implementation method thereof |
| CN102431090B (en) * | 2011-10-25 | 2014-02-19 | 南开大学滨海学院 | Fiber grating precast beam prestress intelligent tensioning control system and implementation method thereof |
| CN102953550B (en) * | 2012-09-29 | 2014-12-10 | 招商局重庆交通科研设计院有限公司 | Manual-automatic integrated tensioning system |
| CN102953550A (en) * | 2012-09-29 | 2013-03-06 | 招商局重庆交通科研设计院有限公司 | Manual-automatic integrated tensioning system |
| CN103741953A (en) * | 2013-12-20 | 2014-04-23 | 广西科技大学 | Automatic prestress tensioning control system |
| CN104949849A (en) * | 2015-04-27 | 2015-09-30 | 同济大学 | Jack demarcating and calibrating methods |
| CN104965533A (en) * | 2015-04-27 | 2015-10-07 | 同济大学 | Pre-stress single-end single-jack intelligent tensioning control system |
| CN106393423A (en) * | 2016-08-25 | 2017-02-15 | 宁波建工广天构件有限公司 | Full-automatic hydraulic tensioning device and use method thereof |
| CN106393423B (en) * | 2016-08-25 | 2018-11-02 | 宁波建工广天构件有限公司 | A kind of fully automatic hydraulic tensioning equipment and its application method |
| CN109683647A (en) * | 2019-02-02 | 2019-04-26 | 中铁十五局集团第一工程有限公司 | A kind of prestressing force automatic tensioning control system and method |
| CN113818349A (en) * | 2021-09-01 | 2021-12-21 | 厦门路桥建设集团有限公司 | Bridge hogging moment tensioning method, device, equipment and readable storage medium |
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Application publication date: 20110323 |