CN109683647A - A kind of prestressing force automatic tensioning control system and method - Google Patents
A kind of prestressing force automatic tensioning control system and method Download PDFInfo
- Publication number
- CN109683647A CN109683647A CN201910106483.6A CN201910106483A CN109683647A CN 109683647 A CN109683647 A CN 109683647A CN 201910106483 A CN201910106483 A CN 201910106483A CN 109683647 A CN109683647 A CN 109683647A
- Authority
- CN
- China
- Prior art keywords
- stress
- tension
- tensioning
- master controller
- jack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention relates to a kind of prestressing force automatic tensioning control system and methods, the control system includes including jack, driving device, displacement sensor, pressure sensor, single-chip microcontroller, master controller and power switch, the control method is first by tensioning parameter, tension stress limiting value, tension stress controlling value inputs master controller, drive jack tension, single-chip microcontroller acquires displacement sensor, the data that pressure sensor obtains, and stretching extension value and tension stress are obtained by conversion, then master controller is transferred data to, real-time recorded data, and judge whether to reach tension stress controlling value, it completes to operate if reaching；The present invention is really achieved the purpose of full-automatic cable tensios control; cable tensios control precision is high; control precision reachable ± 0.8%; realize grading tension; real-time continuous monitoring, has auto-alarm-signal keying device defencive function, high-efficient, advantage of lower cost; the automation control for realizing stretching process, is hardly affected by human factors.
Description
Technical field
The present invention relates to prestressing stretching technique fields, and in particular to a kind of prestressing force automatic tensioning control system and side
Method.
Background technique
Prestressed stretch-draw refers to adds pulling force in advance in component, so that being applied prestressed stretch-draw component bears compression,
So that it generates certain deformation, to cope with the suffered load of structure itself, load, wind including component own wt
Load, snow load, seismic loading etc..Steel strand wires, jack, anchor slab, intermediate plate are used in general tensioning.In Engineering Structure Component
Before bearing external load, to the steel strand wires in tension module, applies pre-tensile stress, improve the bending resistance and rigidity of component, push away
The time that slow crack occurs, increase the durability of component.From the point of view of mechanical structure, meaning is that it is made to generate stress in advance,
Its benefit is that construction rigidity itself can be improved, and reduces vibration and flexible deformation, tension module can be obviously improved by doing so
Elastic strength keeps the resistance of script stronger.
The construction quality of prestressed stretch-draw is irregular at present, lacks process control technology and equipment, after tensioning, even if hair
Existing problem is also difficult to remedy.Main problem is as follows:
(1) the control precision of construction stretching effective prestress is poor；Including in stretching process to tension stress, stretching extension
The synchronization accuracy of lotus and uninstall process is held in the tensioning of both ends jack in the control precision and stretching process of amount, once it answers in advance
Power tensioning precision is out of control, gently can then cause structure the longitudinal crack of anchored end, antiarch occur excessive, heavy then to cause structure to occur horizontal
The accidents such as break to crack, presstressed reinforcing steel.
(2) tensioning classification, hold lotus, ultra stretching, locking be not able to satisfy design requirement；As side slope prestress anchorage cable is generally existing
The serious problem of Relaxation of prestressing, main cause are not carry out that tensioning classification, to hold the lotus time inadequate by design requirement, are consequently formed
Security risk.
(3) effective monitoring is not carried out to prestressed stretch-draw process；China's servicing bridges are more to have cracking and lower rich phenomenon,
It is largely investigated and is detected, main cause is just a lack of and control effectively to prestress stretching quality, even if it is pre- to find the problem
Stress loss is excessive or overloads, it is also difficult to remedy.
Chinese patent CN2458616 discloses a kind of intelligent control pre-stress stretching device, and the device is by adding signal
Acquisition component and corresponding signal processing apparatus, make prestressed stretch-draw digitized process so that prestressed structure construction it is artificial because
Element is reduced, and improves the tensioning precision of prestressed structure.Chinese patent CN1212464C discloses a kind of full-automatic prestressed stretch-draw
Device, the control assembly of stretch-draw jack, force snesor, displacement sensor and tensioning equipment which is driven by oil pump,
It is equipped in oil pump feed oil circuit and is controlled the solenoid valve that assembly controls by tensioning equipment, force snesor is fixed with strain by its outer surface
Piece soil fertility sensing elastic component has the top in presstressed reinforcing steel hole to constitute thereon in power sensing elastic component.Above-mentioned patent application mentions
The prestressed stretch-draw scheme of confession is controlled by single-chip microcontroller, can only guarantee that tensioning precision in the range of 1%, uses list
The A/D conversion accuracy of piece machine is limited, lacks effective monitoring to prestressed stretch-draw process, and then limit the application of above scheme.
Summary of the invention
In order to overcome the shortcomings in the prior art, the purpose of the present invention is to provide a kind of computer Automatic Controls, control
Precision is high, controls system with grading tension and lasting monitoring function, high-efficient and advantage of lower cost prestressing force automatic Tensioning
System and method, its technical solution is as follows:
A kind of prestressing force automatic tensioning control system, including jack, driving device, displacement sensor, pressure sensor,
Single-chip microcontroller, master controller and power switch；
Described jack one end connects limit plate, other end fastening means anchor, and the limit plate connects institute by connector
Displacement sensors, the jack connect the pressure sensor, institute's displacement sensors and pressure sensor with it is described
Single-chip microcontroller connection；
The single-chip microcontroller is connect with the master controller, and the single-chip microcontroller is connect with the driving device, the driving dress
It sets and is connect with the jack；
The power switch is connect with the master controller, and the power switch is connect with the driving device.
Preferably, the master controller includes control chip, wireless communication module, display module, memory module, touches behaviour
Make module, alarm modules, the control chip respectively with the wireless communication module, display module, memory module, touch operation
Module, alarm modules connection.
Preferably, the driving device includes solenoid valve, oil pump and motor, is passed through between the oil pump and the jack
Oil pipe connection, the oil pipe are equipped with solenoid valve, and the solenoid valve is connect with the single-chip microcontroller, and the oil pump and the motor connect
It connects, the oil pump is equipped with pressure gauge.
Preferably, the pressure sensor is arranged at the oil inlet in the jack, and the pressure sensor is tool
There is the strain ga(u)ge of high-precision and high-stability.
Preferably, the oil outlet in the jack is arranged in the pressure sensor, and the pressure sensor is tool
There is the resistance-strain of high-precision and high-stability.
Preferably, the master controller is equipped with printing interface and USB interface.
Preferably, the control system further includes secondary control device, and the secondary control device includes wireless communication interface, display screen
And central processing unit, the central processing unit are connect with wireless communication interface and display screen respectively, the secondary control device passes through nothing
Line communication interface carries out data transmission with master controller.
Preferably, the master controller passes through wireless network connection mobile phone terminal or remote computer.
Another technical solution, a kind of prestressing force automatic Tensioning control method, comprising the following steps:
S1, it turns on the power switch, starts master controller, driving device is powered, simultaneously by running parameter input master controller first
Storage, running parameter includes tensioning parameter, tension stress limiting value, stretching extension value limiting value and tension stress controlling value；
S2, driving device is opened, drives jack tension, single-chip microcontroller acquires displacement sensor, pressure sensor obtains
Data, and stretching extension value and tension stress are obtained by formula scales, the data that conversion obtains then are transferred to main control
Device；
S3, master controller judgment step S2 tension stress whether reach the tension stress controlling value of step S1, if then
Continue next step, if otherwise going to step S2 and controlling driving device pressurization；
If tension stress be more than step S1 tension stress limiting value or stretching extension value be more than step S1 stretching extension
Limiting value, then fault warning are measured, and stops tensioning；
S4, the stretching extension value and tension stress of master controller record at this time, while shutdown signal is sent to driving device,
Stop relevant operation.
Preferably, the method that jack tension is driven described in step S2, including the symmetrical tensioning of one-end tension and both ends；
One-end tension the following steps are included:
S211, initial stress tensioning is first carried out, initial stress is the 20% of tension stress；
S212, carry out again in stress tension, middle stress be tension stress 40%；
S213, whole stress tension is then carried out, whole stress is the 100% of tension stress, and holds 1~2min of lotus；
Both ends tensioning the following steps are included:
S221, the symmetrical tensioning in both ends, while initial stress tensioning is carried out, initial stress is the 20% of tension stress, and is carried out same
Step judgement, compares the stress of both ends tensioning, if fast one end is kept more than 2%, slow one end accelerates, if less than 2%,
Continue next step；
S222, carry out again in stress tension, middle stress is the 40% of tension stress, and synchronizes judgement, compares both ends
The stress of tensioning, if fast one end is kept more than 1%, slow one end accelerates, if continuing next step less than 1%；
S223, whole stress tension is then carried out, whole stress is the 100% of tension stress, and synchronizes judgement, compares two
The stress of tensioning is held, if fast one end is kept more than 1%, slow one end accelerates, if holding 1~2min of lotus less than 1%.
Present invention advantageous effects obtained:
1) present invention solves that measurement error caused by human factor in the prior art is big, component both ends tensioning synchronism
Difference, control precision are low, lack the defect of data monitoring to stretching process, and the present invention is really achieved the mesh of full-automatic cable tensios control
, cable tensios control precision is high, has grading tension and lasting monitoring function, high-efficient and advantage of lower cost；
2) present invention forms human-computer interaction interface by display module and touch operation module, not only realizes visualization behaviour
Make, and record tension stress and elongation value of stretching in stretching process in real time, and establish change curve, stretching process is carried out
Effective monitoring, the problem for avoiding measurement error caused by human factor big improve cable tensios control precision；
3) present invention is by being equipped with alarm device, when tension stress, stretching extension value meet or exceed default control range
When, master controller sounds an alarm automatically, while being automatically stopped tensioning, effectively avoids the accident that tension of prestressed tendon is out of control, improves
The safety of operation；
4) present invention, which can not only have been realized, carries out single-ended automatic Tensioning to component to be tensioned, but also can realize and carry out to component to be tensioned
Synchronous tension, while grading tension is carried out, the control precision of prestressing force automatic Tensioning reachable ± 0.8% realizes stretching process
Automation control, be not affected by human factors.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of 1 prestressing force automatic tensioning control system of embodiment；
Fig. 2 is the structural schematic diagram of the master controller of 1 prestressing force automatic tensioning control system of embodiment；
Fig. 3 is the flow chart of 2 prestressing force automatic Tensioning control method of embodiment；
Fig. 4 is the structural schematic diagram of 3 prestressing force automatic tensioning control system of embodiment；
Fig. 5 is the structural schematic diagram of this controller of 3 prestressing force automatic tensioning control system of embodiment.
In the figures above: 1, master controller；2, single-chip microcontroller；3, power switch；4, jack；5, displacement sensor；6,
Limit plate；7, pressure sensor；8, moveable anchor；9, motor；10, oil pump；11, solenoid valve；12, pressure gauge；13, printing interface；
14, USB interface；15, secondary control device；16, chip is controlled；17, touch operation module；18, wireless communication module；19, mould is shown
Block；20, memory module；21, alarm modules；22, central processing unit；23, display screen；24, wireless communication interface.
Specific embodiment
Hereinafter reference will be made to the drawings, describes technical solution of the present invention in detail by way of example.It needs to illustrate herein
, the descriptions of the manners of these embodiments are used to facilitate the understanding of the present invention, but and does not constitute a limitation of the invention.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate: individualism A, individualism B exist simultaneously tri- kinds of situations of A and B, the terms
"/and " it is to describe another affiliated partner relationship, indicate may exist two kinds of relationships, for example, A/ and B, can indicate: individually depositing
In A, two kinds of situations of individualism A and B, in addition, character "/" herein, typicallying represent forward-backward correlation object is a kind of "or" pass
System.
Embodiment 1
As shown in Fig. 1, a kind of prestressing force automatic tensioning control system, including jack 4, driving device, displacement sensing
Device 5, pressure sensor 7, single-chip microcontroller 2, master controller 1 and power switch 3；
4 one end of jack connects limit plate 6, other end fastening means anchor 8, and limit plate 6 connects displacement by connector and passes
Sensor 5, displacement sensor 5 are used to obtain the displacement of 4 piston of jack in stretching process, and jack 4 connects pressure sensor 7,
Pressure sensor 7 is used to obtain the pressure of hydraulic oil, and displacement sensor 5 and pressure sensor 7 are connect with single-chip microcontroller 2, monolithic
Machine 2 calculates the stretching extension value and tension stress in stretching process, then transfer data to master by preset conversion method
Controller 1；
Single-chip microcontroller 2 is connect with the master controller 1, and single-chip microcontroller 2 is connect with driving device, and master controller 1 passes through single-chip microcontroller 2
The running of driving device is controlled, driving device is connect with jack 4, and driving device drives jack 4 to operate；
Power switch 3 is connect with master controller 1, and power switch 3 is connect with driving device, and power switch 3 is opened, main control
Device 1 starts, and driving device is powered, into standby mode.
As shown in Fig. 2, master controller 1 includes control chip 16, wireless communication module 18, display module 19, storage mould
Block 20, touch operation module 17, alarm modules 21, control chip 16 respectively with wireless communication module 18, display module 19, storage
Module 20, touch operation module 17, alarm modules 21 connect.
Module 18 is connect control chip 16 with single-chip microcontroller 2 by wireless communication, and control chip 16 is for carrying out data analysis
Processing, for operator by 17 input service parameter of touch operation module, running parameter includes tensioning parameter, the tension stress limit
Value, stretching extension value limiting value and tension stress controlling value, and be placed in memory module 20, chip 16 is controlled first to input
Tensioning parameter, tension stress controlling value are analyzed to identify, then instruction is sent single-chip microcontroller 2, and single-chip microcontroller 2 carries out after being connected to instruction
Stretching process control.
Single-chip microcontroller 2 is transmitted the data come and carries out real-time display by display module 19, and is shown equipped with curve graph and shown with numerical value
Show, operator can switch display at any time, realize the real time monitoring to stretching process data.
When control chip 16 detects that stretching extension value or tension stress in stretching process meet or exceed limiting value,
Alarm modules 21 are sent instructions to, alarm includes the prompt of light, sound or both simultaneously, issues prompt letter to operator
Number.
When control chip 16 detects that stretching extension value or tension stress in stretching process meet or exceed controlling value,
Halt instruction is sent to single-chip microcontroller 2, stops tensioning movement instantly, realizes the self-protection function of system.
Master controller 1 is equipped with printing interface 13 and usb 14, and printing interface 13 connects miniature in master controller 1
Printer, the data-printing convenient for acquiring stretching process come out, and usb 14 is convenient for the data for acquiring stretching process to export
Into mobile data memory unit.
In one embodiment, 13 external printer of printing interface, the data-printing convenient for acquiring stretching process come out.
Driving device includes solenoid valve 11, oil pump 10 and motor 9, is connected between oil pump 10 and jack 4 by oil pipe, oil
Pipe is equipped with solenoid valve 11, and the control terminal of solenoid valve 11 is connect with single-chip microcontroller 2, and single-chip microcontroller 2 controls the unlatching of solenoid valve 11, in turn
The oil mass for entering oil cylinder from oil pump 10 is controlled, oil pump 10 is connect with motor 9, and motor 9 drives oil pump 10 to operate, and oil pump 10 is equipped with
Pressure gauge 12 checks pressure reading convenient for scene, realizes desk checking.
In one embodiment, the quantity of solenoid valve 11 is two, and the oil cylinder of jack 4 connects two electromagnetism by oil pipe
One end of valve 11, the other end of two solenoid valves 11 connect oil pump 10, and the control terminal of two solenoid valves 11 connects single-chip microcontroller 2, control
Make the oil mass for entering oil cylinder from oil pump 10.
Pressure sensor 7 is arranged at the oil inlet in jack 4, far from oil pump 10 and motor 9, avoids because of 9 work of motor
Make generation electromagnetic interference, it is ensured that pressure sensor 7 acquires the accuracy of data, improves prestressed tensioning precision, the pressure
Sensor 7 is the strain ga(u)ge with high-precision and high-stability.
In one embodiment, pressure sensor 7 is arranged in the oil outlet in jack 4, pressure sensor 7 be with
The strain ga(u)ge of high-precision and high-stability.
In one embodiment, it is provided with pressure sensor 7 with oil outlet at the oil inlet in jack 4 and sets
It sets, pressure sensor 7 is the strain ga(u)ge with high-precision and high-stability.
Master controller 1 by wireless network connection mobile phone terminal or remote computer, convenient for operator by mobile phone terminal or
Remote computer sets strain-pull controlling of prestress, the data situation of real time review stretching process.
Embodiment 2
Based on the above embodiment 1, as shown in Fig. 3, a kind of prestressing force automatic Tensioning control method, comprising the following steps:
S1,3 are turned on the power switch, starts master controller 1, driving device is powered, and running parameter is first inputted master controller 1
And store, running parameter includes tensioning parameter, tension stress limiting value, stretching extension value limiting value and tension stress controlling value；
S2, driving device is opened, drives 4 tensioning of jack, single-chip microcontroller 2 acquires displacement sensor 5, pressure sensor 7 obtains
The data obtained, and stretching extension value and tension stress are obtained by formula scales, the data obtained that then will convert are transferred to master
Controller 1；
The method that 4 tensioning of jack is driven in step S2 is one-end tension, comprising the following steps:
S211, initial stress tensioning is first carried out, initial stress is the 20% of tension stress；
S212, carry out again in stress tension, middle stress be tension stress 40%；
S213, whole stress tension is then carried out, whole stress is the 100% of tension stress, and holds 1~2min of lotus；
S3,1 judgment step S2 of master controller tension stress whether reach the tension stress controlling value of step S1, if then
Continue next step, if otherwise going to step S2 and controlling driving device pressurization, if the tensioning that tension stress is more than step S1 is answered
Power limiting value or stretching extension value are more than the stretching extension value limiting value of step S1, then fault warning, and stop tensioning；
Displacement sensor 5, pressure sensor 7 are obtained and are converted through single-chip microcontroller 2 and obtain at this time for S4, the record of master controller 1
Stretching extension value and tension stress, while shutdown signal is sent to the driving device, stop relevant operation.
Embodiment 3
Based on the above embodiment 1, the different place of the present embodiment is, as shown in Fig. 4, which further includes
Secondary control device 15, secondary control device 15 receive the control command of master controller 1, realize the symmetrical tensioning in both ends to component to be tensioned, such as
Shown in attached drawing 5, secondary control device 15 includes wireless communication interface 24, display screen 23 and central processing unit 22, and central processing unit 22 divides
It is not connect with wireless communication interface 24 and display screen 23, interface 24 and master controller 1 carry out secondary control device 15 by wireless communication
Data transmission.
Module 18 gives the transmission order of secondary control device 15 to master controller 1 by wireless communication, and central processing unit 22 receives life
After order, order being transferred to single-chip microcontroller 2, and then control the tensioning of one end jack 4, single-chip microcontroller 2 passes through preset conversion method,
The data reduction that sensor acquires is obtained to the stretching extension value and tension stress during tensioned at one end, then is transferred data to
Central processing unit 22,22 one side of central processing unit send the data to display screen 23,23 real-time display stretching extension of display screen
Amount and tension stress delta data, by data, interface 24 sends master controller to another aspect central processing unit 22 by wireless communication
1, master controller 1 carries out analysis storage to data, while comparing the synchronism of both ends tensioning, and carries out corresponding amendment operation.
Embodiment 4
Based on the above embodiment 3, a kind of prestressing force automatic Tensioning control method, comprising the following steps:
S1,3 are turned on the power switch, starts master controller 1, driving device is powered, and running parameter is first inputted master controller 1
And store, running parameter includes tensioning parameter, tension stress limiting value, stretching extension value limiting value and tension stress controlling value；
S2, driving device is opened, drives 4 tensioning of jack, single-chip microcontroller 2 acquires displacement sensor 5, pressure sensor 7 obtains
The data obtained, and stretching extension value and tension stress are obtained by formula scales, the data obtained that then will convert are transferred to master
Controller 1；
The method that 4 tensioning of jack is driven in step S2 is the symmetrical tensioning in both ends, comprising the following steps:
S221, the symmetrical tensioning in both ends, while initial stress tensioning is carried out, initial stress is the 20% of tension stress, and is carried out same
Step judgement, synchronous judgment method compare the stress of both ends tensioning, if fast one end is kept more than 2%, slow one end accelerates,
If continuing next step less than 2%；
S222, carry out again in stress tension, middle stress is the 40% of tension stress, and synchronizes judgement, synchronous to judge
Method is same as above；
S223, whole stress tension is then carried out, whole stress is the 100% of tension stress, and synchronizes judgement, synchronizes and sentences
Disconnected method is same as above, and 1~2min of lotus is held when reaching whole stress；
S3,1 judgment step S2 of master controller tension stress whether reach the tension stress controlling value of step S1, if then
Continue next step, if otherwise going to step S2 and controlling driving device pressurization；
If tension stress be more than step S1 tension stress limiting value or stretching extension value be more than step S1 stretching extension
Limiting value, then fault warning are measured, and stops tensioning；
Displacement sensor 5, pressure sensor 7 are obtained and are converted through single-chip microcontroller 2 and obtain at this time for S4, the record of master controller 1
Stretching extension value and tension stress, while shutdown signal is sent to the driving device, stop relevant operation.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the present invention can have various changes, variation and combination.All within the spirits and principles of the present invention, made
Any modification, equivalent substitution, improvement and etc. should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of prestressing force automatic tensioning control system, which is characterized in that including jack (4), driving device, displacement sensor
(5), pressure sensor (7), single-chip microcontroller (2), master controller (1) and power switch (3)；
Described jack (4) one end connects limit plate (6), other end fastening means anchor (8), and the limit plate (6) passes through connection
Part connects institute's displacement sensors (5), and the jack (4) connects the pressure sensor (7), institute's displacement sensors (5)
It is connect with the single-chip microcontroller (2) with pressure sensor (7)；
The single-chip microcontroller (2) connect with the master controller (1), and the single-chip microcontroller (2) connect with the driving device, the drive
Dynamic device is connect with the jack (4)；
The power switch (3) connect with the master controller (1) and the driving device respectively.
2. prestressing force automatic tensioning control system according to claim 1, which is characterized in that master controller (1) packet
Include control chip (16), wireless communication module (18), display module (19), memory module (20), touch operation module (17), police
Report module (21), the control chip (16) respectively with the wireless communication module (18), display module (19), memory module
(20), touch operation module (17), alarm modules (21) connection.
3. prestressing force automatic tensioning control system according to claim 1, which is characterized in that the driving device includes electricity
Magnet valve (11), oil pump (10) and motor (9) are connect between the oil pump (10) and the jack (4) by oil pipe, the oil
Pipe is equipped with solenoid valve (11), and the solenoid valve (11) connect with the single-chip microcontroller (2), the oil pump (10) and the motor
(9) it connects, the oil pump (10) is equipped with pressure gauge (12).
4. prestressing force automatic tensioning control system according to claim 1-3, which is characterized in that the pressure passes
Sensor (7) is arranged at the oil inlet in the jack (4), and the pressure sensor (7) is with high-precision and high-stability
Strain ga(u)ge.
5. prestressing force automatic tensioning control system according to claim 1-3, which is characterized in that the pressure passes
The oil outlet that sensor (7) is arranged in the jack (4), the pressure sensor (7) are with high-precision and high-stability
Strain ga(u)ge.
6. prestressing force automatic tensioning control system according to claim 1-3, which is characterized in that the main control
Device (1) is equipped with printing interface (13) and USB interface (14).
7. prestressing force automatic tensioning control system according to claim 1-3, which is characterized in that control system is also
Including secondary control device (15), the secondary control device (15) includes wireless communication interface (24), display screen (23) and central processing unit
(22), the central processing unit (22) connect with wireless communication interface (24) and display screen (23) respectively, the secondary control device
(15) interface (24) carries out data transmission with master controller (1) by wireless communication.
8. prestressing force automatic tensioning control system according to claim 1-3, which is characterized in that the main control
Device (1) passes through wireless network connection mobile phone terminal or remote computer.
9. a kind of prestressing force based on prestressing force automatic tensioning control system according to claim 1-8 is opened automatically
Draw control method, which comprises the following steps:
S1, it turns on the power switch (3), starts master controller (1), driving device is powered, and running parameter is first inputted master controller
(1) it and stores, running parameter includes tensioning parameter, tension stress limiting value, stretching extension value limiting value and tension stress control
Value；
S2, driving device is opened, drives jack (4) tensioning, single-chip microcontroller (2) acquires displacement sensor (5), pressure sensor
(7) data obtained, and stretching extension value and tension stress are obtained by formula scales, the data for then obtaining conversion are transmitted
Give master controller (1)；
S3, master controller (1) judgment step S2 tension stress whether reach the tension stress controlling value of step S1, if then after
Continuous next step, if otherwise going to step S2 and controlling driving device pressurization；
If tension stress be more than step S1 tension stress limiting value or stretching extension value be more than step S1 stretching extension value pole
Limit value, then fault warning, and stop tensioning；
S4, the stretching extension value and tension stress of master controller (1) record at this time, while shutdown signal is sent to driving device,
Stop relevant operation.
10. prestressing force automatic Tensioning control method according to claim 9, which is characterized in that driven described in step S2
The method of jack (4) tensioning, including the symmetrical tensioning of one-end tension and both ends；
One-end tension the following steps are included:
S211, initial stress tensioning is first carried out, initial stress is the 20% of tension stress；
S212, carry out again in stress tension, middle stress be tension stress 40%；
S213, whole stress tension is then carried out, whole stress is the 100% of tension stress, and holds 1~2min of lotus；
Both ends tensioning the following steps are included:
S221, the symmetrical tensioning in both ends, while initial stress tensioning is carried out, initial stress is the 20% of tension stress, and synchronizes and sentence
It is disconnected, compare the stress of both ends tensioning, if fast one end is kept more than 2%, slow one end accelerates, if continuing less than 2%
Next step；
S222, carry out again in stress tension, middle stress is the 40% of tension stress, and synchronizes judgement, compares both ends tensioning
Stress, if fast one end is kept more than 1%, slow one end accelerates, if continuing next step less than 1%；
S223, whole stress tension is then carried out, whole stress is the 100% of tension stress, and synchronizes judgement, compares both ends
The stress of drawing, if fast one end is kept more than 1%, slow one end accelerates, if holding 1~2min of lotus less than 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910106483.6A CN109683647A (en) | 2019-02-02 | 2019-02-02 | A kind of prestressing force automatic tensioning control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910106483.6A CN109683647A (en) | 2019-02-02 | 2019-02-02 | A kind of prestressing force automatic tensioning control system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109683647A true CN109683647A (en) | 2019-04-26 |
Family
ID=66195647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910106483.6A Pending CN109683647A (en) | 2019-02-02 | 2019-02-02 | A kind of prestressing force automatic tensioning control system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109683647A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021770A (en) * | 2019-12-23 | 2020-04-17 | 浙江大学 | A top formula prestressing force reinforcing machine for building structure restores and consolidates field |
| CN111472552A (en) * | 2020-04-03 | 2020-07-31 | 上海建工集团股份有限公司 | Interaction device and method of numerical control tensioning equipment |
| CN113589735A (en) * | 2021-08-04 | 2021-11-02 | 中铁十六局集团第一工程有限公司 | Wireless multi-point prestress collaborative tensioning control system |
| CN114278099A (en) * | 2021-11-29 | 2022-04-05 | 中交世通(重庆)重工有限公司 | Prestress steel structure tool rod piece system |
| CN114323389A (en) * | 2022-03-14 | 2022-04-12 | 四川交达预应力工程检测科技有限公司 | Prestress detection method, non-grading rapid continuous tensioning method and system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007049360A1 (en) * | 2005-10-27 | 2007-05-03 | Anderson Technology Corporation | Device for controlling/managing injection of grout into cable sheath or duct of pc structure and injection controlling/managing system |
| CN101989091A (en) * | 2009-07-31 | 2011-03-23 | 中国建筑第八工程局有限公司 | Prestress automatic tensioning control system and method |
| CN103147399A (en) * | 2013-02-07 | 2013-06-12 | 柳州市邱姆预应力机械有限公司 | Intelligent prestressing force stretching system |
| CN103741953A (en) * | 2013-12-20 | 2014-04-23 | 广西科技大学 | Automatic prestress tensioning control system |
| CN104963515A (en) * | 2015-04-27 | 2015-10-07 | 同济大学 | Pre-stress two-end synchronous tension device |
| CN204780609U (en) * | 2015-05-28 | 2015-11-18 | 天津超威千斤顶有限公司 | Intelligence numerical control stretch -draw system |
| CN204780604U (en) * | 2015-05-07 | 2015-11-18 | 中交三航局第三工程有限公司 | Intelligence numerical control stretch -draw system |
| CN105887683A (en) * | 2016-04-11 | 2016-08-24 | 长安大学 | Prestressed tensioning system |
-
2019
- 2019-02-02 CN CN201910106483.6A patent/CN109683647A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007049360A1 (en) * | 2005-10-27 | 2007-05-03 | Anderson Technology Corporation | Device for controlling/managing injection of grout into cable sheath or duct of pc structure and injection controlling/managing system |
| CN101989091A (en) * | 2009-07-31 | 2011-03-23 | 中国建筑第八工程局有限公司 | Prestress automatic tensioning control system and method |
| CN103147399A (en) * | 2013-02-07 | 2013-06-12 | 柳州市邱姆预应力机械有限公司 | Intelligent prestressing force stretching system |
| CN103741953A (en) * | 2013-12-20 | 2014-04-23 | 广西科技大学 | Automatic prestress tensioning control system |
| CN104963515A (en) * | 2015-04-27 | 2015-10-07 | 同济大学 | Pre-stress two-end synchronous tension device |
| CN204780604U (en) * | 2015-05-07 | 2015-11-18 | 中交三航局第三工程有限公司 | Intelligence numerical control stretch -draw system |
| CN204780609U (en) * | 2015-05-28 | 2015-11-18 | 天津超威千斤顶有限公司 | Intelligence numerical control stretch -draw system |
| CN105887683A (en) * | 2016-04-11 | 2016-08-24 | 长安大学 | Prestressed tensioning system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021770A (en) * | 2019-12-23 | 2020-04-17 | 浙江大学 | A top formula prestressing force reinforcing machine for building structure restores and consolidates field |
| CN111472552A (en) * | 2020-04-03 | 2020-07-31 | 上海建工集团股份有限公司 | Interaction device and method of numerical control tensioning equipment |
| CN113589735A (en) * | 2021-08-04 | 2021-11-02 | 中铁十六局集团第一工程有限公司 | Wireless multi-point prestress collaborative tensioning control system |
| CN114278099A (en) * | 2021-11-29 | 2022-04-05 | 中交世通(重庆)重工有限公司 | Prestress steel structure tool rod piece system |
| CN114323389A (en) * | 2022-03-14 | 2022-04-12 | 四川交达预应力工程检测科技有限公司 | Prestress detection method, non-grading rapid continuous tensioning method and system |
| CN114323389B (en) * | 2022-03-14 | 2022-05-17 | 四川交达预应力工程检测科技有限公司 | Prestress detection method, non-grading rapid continuous tensioning method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109683647A (en) | A kind of prestressing force automatic tensioning control system and method | |
| CN202562677U (en) | Prestress under anchorage intelligent synchronous stretching and drawing detection device | |
| CN103089018B (en) | Prestress steel structure tension construction method capable of accurately setting up tension force | |
| CN102431090B (en) | Fiber grating precast beam prestress intelligent tensioning control system and implementation method thereof | |
| CN103364276B (en) | A kind of anchor lower prestress intelligent synchronization tension test device | |
| CN101769809A (en) | Anchor chain lacerating machine | |
| CN210243147U (en) | Constant-force hanger on-site load test structure | |
| CN102031874A (en) | Intelligent type synchronous prestress tensioning system | |
| CN201876387U (en) | Static load anchoring performance testing device | |
| CN201057518Y (en) | Synthetic testing bench for pre-stressed anchorage and connector | |
| CN201865358U (en) | Intelligent synchronous prestress tensioning system | |
| CN208981163U (en) | One kind monitoring system for parallel steel stranded wire stayed Cable Construction Cable Force uniformity | |
| CN201844947U (en) | Comprehensive test stand for prestressed anchorage device and connector | |
| CN201223881Y (en) | Apparatus for measuring tensioning force of fine rolling screw-thread steel | |
| CN101251443A (en) | Vehicle sideslip door propulsion experimental rig as well as testing method thereof | |
| CN201331404Y (en) | Anchor chain tension testing machine | |
| CN201293744Y (en) | Compression tester for iron ore ball group | |
| CN201464204U (en) | Dynamic jack load pretesting system | |
| CN205353791U (en) | Prestressing force stretch -draw intelligence control system | |
| CN209945407U (en) | Real-time online safety detection system for steel wire rope winch type vertical ship lift | |
| CN202304788U (en) | Device for measuring prestress tension elongation | |
| CN202388617U (en) | Intelligent stretch-draw control device of prestressing force of fiber bragg grating precast beam | |
| CN213600498U (en) | Concrete pressure test device | |
| CN101949798A (en) | Comprehensive test stand of prestressed anchorage device and connector | |
| CN209412709U (en) | System is monitored for parallel steel stranded wire stayed Cable Construction Cable Force uniformity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190426 |