CN2511943Y - Self-control comprehensive test device for prestress force stretch-draw anchor - Google Patents
Self-control comprehensive test device for prestress force stretch-draw anchor Download PDFInfo
- Publication number
- CN2511943Y CN2511943Y CN 01256820 CN01256820U CN2511943Y CN 2511943 Y CN2511943 Y CN 2511943Y CN 01256820 CN01256820 CN 01256820 CN 01256820 U CN01256820 U CN 01256820U CN 2511943 Y CN2511943 Y CN 2511943Y
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- CN
- China
- Prior art keywords
- draw
- prestressed stretch
- external interface
- front tank
- control line
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- 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.)
- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a self-control comprehensive test device for prestress force stretch-draw anchor which comprises a computer (1), a displacement sensor (2), a pressure sensor (3) and a proportional pressure valve (4). The utility model is characterized in that a cover of a prepositive box (5) is provided with 5 external interfaces, the computer (1) is connected with the external interface through a signal line (6), the proportional pressure valve (4) which is arranged on a prestress force stretch-draw mechanism pumping station is connected with the external interface through a proportional pressure valve control line (7), the displacement sensor (2) and the pressure sensor (3) which are arranged on a prestress force stretch-draw mechanism hoisting jack are respectively connected with the external interfaces through a displacement sensor control line (8) and a pressure sensor control line (9), and a power supply (13) is connected with the external interface through a power supply cord (19). The utility model allows the whole stretch-draw operation to achieve automation, detects and monitors construction process, reduces labor intensity of constructors greatly, removes human impact, and ensures engineering quality. The utility model can also be used as a special detection instrument, and can check and accept and monitor a construction after completion over a long period.
Description
Technical field
The utility model relates to prestress engineering testing tool, particularly integrated autocontrol tester for prestressed stretch-draw anchor.
Technical background
Because prestress engineering belongs to concealed work in some sense, therefore, relevant job specifications has been made strict regulation to its construction quality.As many presstressed reinforcing steels of highway bridge and culvert job specifications (JTJ041-2000) regulation stretch-draw, each muscle unbalance stress evenness is no more than 5%; Behind water conservancy project prestress anchoraging job specifications (SL46-94) the regulation prestressed stretch-draw anchor, the latching force size is no more than 15% of design latching force, or the like.Yet prestressed stretch-draw anchor construction is for a long time finished by the lifting jack that pressure valve control stretch-draw is regulated in manually-operated purely, and the size of a latching force after putting is had no way of learning.Will detect every set quota in work progress is the comparison difficulty, can only estimate by rule of thumb, thereby construction quality is difficult to guarantee.If know the size of latching force, depend merely on that tensioning system itself can't realize, must pre-buried expensive sensor, furthermore can not every bundle cut with scissors line and all bury.Although by sensor, also can only measure the size of latching force, test and respectively cut with scissors stressed whether evenly being difficult to of line.So, though relevant job specifications has clear and definite requirement, there is not means of testing, also fail to be applied in practice.
Problem at pre-stress construction operation and technical indicator test existence, the utility model provides a kind of and not only can carry out science monitoring, but also the integrated autocontrol tester for prestressed stretch-draw anchor with long term monitoring of can carrying out an acceptance inspection to the engineering after being completed to stretch-draw anchor constructing operation and quality on the basis of improving existing prestressed stretch-draw mechanism.
The content of innovation and creation
Integrated autocontrol tester for prestressed stretch-draw anchor, comprise computing machine, displacement transducer, pressure transducer, proportional pressure valve, it is characterized in that on the case lid of front tank 5 external interfaces being arranged, computing machine is connected with an external interface of front tank by signal wire; The proportional pressure valve passing ratio pressure valve control line that is installed on the prestressed stretch-draw mechanism pumping plant is connected with an external interface of front tank; The displacement transducer that is installed on the prestressed stretch-draw mechanism lifting jack respectively is connected with an external interface of front tank by displacement transducer control line and pressure transducer control line respectively with pressure transducer, and power supply is connected with an external interface of front tank by power lead.The pressure control of prestressed stretch-draw mechanism pumping plant replaces by manual pressure regulating valve with proportional pressure valve, so that realize computer controlled automatic; Front tank links to each other with computing machine, so that the record relevant data of the computer software by special use and handling is accordingly measured displacement, pressure, latching force, the coefficient of friction resistance, makes the P-S curve, also can consult or print a whole set of stretching construction data.So just make whole tension operation realize robotization, and work progress is detected in real time and monitors, alleviated workmen's labour intensity greatly, got rid of artificial factor, guaranteed construction quality.Also can be used as special-purpose detecting instrument, the engineering after being completed is carried out an acceptance inspection and long term monitoring.
Described integrated autocontrol tester for prestressed stretch-draw anchor, circuit in its front tank is divided into part of data acquisition and output control part, wherein part of data acquisition is the 10 channel chip TLC2543 and the wave filter formation of 12 bit resolutions, and output control part adopts the D/A (chip TLC5638) of 12 bit resolutions and proportional amplifier to constitute.After the bridge circuit rectification of part of data acquisition with alternating current filter DA-6A1 filtering and diode composition pressure, the displacement of input are gathered, the order that the while receiving computer is sent, the output control signal carries out The whole control and test job closed loop ground with the control ratio pressure valve.Sampled value is handled the back through the single chip computer AT 89C52 in the front tank and is sent computing machine back to by RS-232 interface.Computing machine is given the single-chip microcomputer in the front tank after receiving measured value accurate computing of process and system handles immediately.After single-chip microcomputer is received,, change the aperture of proportional pressure valve,, make the lifting jack operate as normal with the control oil pressure promptly by the proportional amplifier output control signal of output.
Described prestressed stretch-draw anchor comprehensive tester, its displacement transducer be by on the shell of lifting jack of a piece being installed being connected prestressed stretch-draw mechanism, and the gauge head of displacement transducer is fixed in the annular groove on the push rod of lifting jack.
Described prestressed stretch-draw anchor comprehensive tester, the whorl brace rod of its pressure transducer is connected on the screw of lifting jack outer shell.Pressure transducer being directly installed on the outer shell of lifting jack, is in order to improve measuring accuracy.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the connection diagram of the utility model and prestressed stretch-draw mechanism.
Fig. 3 is the front tank circuit diagram.
Embodiment
Referring to Fig. 1, Fig. 2, proportional pressure valve 4 is installed on the prestressed stretch-draw mechanism pumping plant, and passing ratio pressure valve control line 7 is connected with the external interface 14 of front tank 5; With displacement transducer 2 by on the shell of lifting jack of a piece 10 being installed being connected prestressed stretch-draw mechanism, the gauge head of displacement transducer 2 is fixed in the annular groove 11 on the lifting jack push rod, and is connected with the external interface 15 of front tank 5 by displacement transducer control line 8; The connecting screw rod 12 of pressure transducer 3 is connected on the screw of lifting jack outer shell, and is connected with the external interface 16 of front tank 5 by pressure transducer control line 9; Computing machine 1 is connected with the external interface 17 of front tank 5 by signal wire 6; The external interface 18 of front tank 5 is connected with power lead 19, and power lead 19 is connected with power supply 13.In computing machine 1, carry out the parameter setting by designing requirement and control corresponding standard, start the pumping plant of prestressed stretch-draw mechanism, the signal that computing machine sends (digital quantity) converts the magnitude of current and amplification by signal wire 6 to front tank 5, current signal is controlled tensioning construction automatically through the pressure of proportional pressure valve control line 7 control ratio pressure valve 4 with the control jack cylinder; The pressure of jack cylinder converts voltage signal to by pressure transducer 3, is sent to front tank 5 through pressure transducer control line 8, converts voltage signal to digital signal, handles through signal wire 6 input computing machines 1 again; Meanwhile, the displacement of jack piston is delivered to front tank 5 with voltage signal through displacement sensor control line 9 by displacement transducer 2, converts voltage signal to digital signal and handles through signal wire 6 input computing machines 1; Thereby draw needed stretching force, displacement, the coefficient of friction resistance, or the like.If desired, also can make the P-S curve, print a whole set of stretching construction data.
Claims (4)
1, integrated autocontrol tester for prestressed stretch-draw anchor, comprise computing machine (1), displacement transducer (2), pressure transducer (3), proportional pressure valve (4), it is characterized in that on the case lid of front tank (5) 5 external interfaces (14), (15), (16), (17), (18) being arranged, computing machine (1) is connected with front tank (5) external interface (17) by signal wire (6); Proportional pressure valve (4) the passing ratio pressure valve control line (7) that is installed on the prestressed stretch-draw mechanism pumping plant is connected with front tank (5) external interface (14); The displacement transducer (2) that is installed on the prestressed stretch-draw mechanism lifting jack is connected with (16) with the external interface (15) of front tank (5) with pressure transducer control line (9) by displacement transducer control line (8) respectively with pressure transducer (3), and power supply (13) is connected with the external interface (18) of front tank (5) by power lead (19).
2, integrated autocontrol tester for prestressed stretch-draw anchor according to claim 1, it is characterized in that the circuit in the front tank (5) is divided into part of data acquisition and output control part, wherein part of data acquisition is the 10 channel chip TLC2543 and the wave filter formation of 12 bit resolutions, and output control part adopts the D/A (chip TLC5638) of 12 bit resolutions and proportional amplifier to constitute.
3, prestressed stretch-draw anchor comprehensive tester according to claim 1 and 2, it is characterized in that displacement transducer (2) by on the shell of lifting jack of a piece (10) being installed being connected prestressed stretch-draw mechanism, the gauge head of displacement transducer (2) is fixed in the annular groove (11) on the push rod of lifting jack.
4,, it is characterized in that the whorl brace rod (12) of pressure transducer (3) is connected on the screw of lifting jack outer shell according to the arbitrary described prestressed stretch-draw anchor comprehensive tester of claim 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01256820 CN2511943Y (en) | 2001-12-06 | 2001-12-06 | Self-control comprehensive test device for prestress force stretch-draw anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01256820 CN2511943Y (en) | 2001-12-06 | 2001-12-06 | Self-control comprehensive test device for prestress force stretch-draw anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2511943Y true CN2511943Y (en) | 2002-09-18 |
Family
ID=33665697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01256820 Expired - Fee Related CN2511943Y (en) | 2001-12-06 | 2001-12-06 | Self-control comprehensive test device for prestress force stretch-draw anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2511943Y (en) |
-
2001
- 2001-12-06 CN CN 01256820 patent/CN2511943Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |