CN201615807U - Device for automatically collecting pre-stressed duct friction test data on real time - Google Patents
Device for automatically collecting pre-stressed duct friction test data on real time Download PDFInfo
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- CN201615807U CN201615807U CN2010201219263U CN201020121926U CN201615807U CN 201615807 U CN201615807 U CN 201615807U CN 2010201219263 U CN2010201219263 U CN 2010201219263U CN 201020121926 U CN201020121926 U CN 201020121926U CN 201615807 U CN201615807 U CN 201615807U
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- lifting jack
- load measuring
- measuring instrument
- displacement meter
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Abstract
The utility model discloses a device for automatically collecting pre-stressed duct friction test data on real time. A first strain oil pressure sensor of the device is connected with a driving end jack choke, and a second strain oil pressure sensor is connected with a driven end jack choke; a body of a first rotary encoder type displacement meter is fixed on a driving end jack, and a wire drawing end of the first rotary encoder type displacement meter is fixed at an end part of a driving end jack oil cylinder; a body of a second rotary encoder type displacement meter is fixed on a driven end jack, and a wire drawing end of the second rotary encoder type displacement meter is fixed at an end part of a driven end jack oil cylinder; and a first oil pump is connected with the driving end jack, and a second oil pump is connected with the driven end jack. The utility model realizes the real-time automatic collection of the field pre-stressed duct friction test data, improves the measuring accuracy and is characterized by wide application range, simple operation, real-time data collection and the like. Furthermore, the real-time automatic collecting device is suitable for the pre-stressed duct friction loss test of bridges and other relevant fields.
Description
Technical field
The utility model relates to a kind of prestressed pore passage frictional resistance test figure real-time automatic collecting device.
Background technology
At present, in bridge or long span building construction pre-stress work progress, pre-stress construction is generally according to the design specifications requirement, take two control means, and influence owing to various factors in the practice of construction process, in prestress design and the work progress, different structure and different construction methods, concrete bridge prestress loss is difficult to only estimate according to calculating, so, be difficult to realize " two control " target truly.For important bridge structure, generally be the size of testing to determine the prestress friction loss by on-the-spot prestressed pore passage frictional resistance.
Similar and general prestressing force drawing process is adopted in traditional prestressed pore passage frictional resistance test, stretching force adopts oil pressure gauge by artificial reading in the test unit, precision is very low, hierarchical loading and manually read oil pressure gauge pressure number average and can produce very big error in the process of the test.Application along with new construction, new method, the span of bridge structure is increasing, Construction control requires more and more higher, prestressed pore passage frictional resistance test method is for adopting load sensor, though can improve the precision of test, but need the anchor clamps of adapted and the load sensor specification is many, dimensional requirement is high, and install and remove time-consuming, operation easier is big etc.As seen, the method and the device of existing prestressed pore passage frictional resistance test can not satisfy both practical simplicities, can not reach accuracy requirement again.
The utility model content
The purpose of this utility model is to overcome the shortcoming of existing measuring technology, and a kind of high precision prestressed pore passage frictional resistance test figure real-time automatic collecting device of realizing on-the-spot in real time synchronous continuous acquisition big data quantity is provided.
The utility model adopts the stretch-draw lifting jack that oil pressure sensor and rotary coding formula displacement meter are installed, and connects 2000 scale load instrument, by computer system Automatic Program image data and drawing; Not needing to realize the test method of a loading synchronous image data of classification, improved site test efficient greatly.
The purpose of this utility model realizes by following proposal:
A kind of prestressed pore passage frictional resistance test figure real-time automatic collecting device comprises drive end lifting jack, Partner lifting jack, first oil pump, second oil pump, the first strain-type oil pressure sensor, the second strain-type oil pressure sensor, the first rotary coding formula displacement meter, the second rotary coding formula displacement meter, the one 2000 scale load measuring instrument, the 2 2000 scale load measuring instrument, the 3 2000 scale load measuring instrument, the 4 2000 scale load measuring instrument, computing machine, the first work anchor slab, second work anchor slab, the first instrument anchor slab and the second instrument anchor slab; Steel strand wires pass bridge prestress pore channel two ends first hydraucone and second hydraucone, and an end passes the work anchor slab and the drive end lifting jack is fixed by the first instrument anchor slab, and the other end passes the second work anchor slab and the Partner lifting jack is fixed by the second instrument anchor slab; The first strain-type oil pressure sensor is chewed with the drive end jack oil and is connected, and the second strain-type oil pressure sensor is chewed with the Partner jack oil and is connected; The body of the first rotary coding formula displacement meter is fixed on the drive end lifting jack, the backguy end of the first rotary coding formula displacement meter is fixed on drive end jack cylinder end, the body of the second rotary coding formula displacement meter is fixed on the Partner lifting jack, and the backguy end of the second rotary coding formula displacement meter is fixed on Partner jack cylinder end; First oil pump links to each other with the drive end lifting jack, and second oil pump links to each other with the Partner lifting jack; The one 2000 scale load measuring instrument links to each other with the first strain-type oil pressure sensor, the 2 2000 scale load measuring instrument links to each other with the first rotary coding formula displacement meter, the 3 2000 scale load measuring instrument is connected with the second rotary coding formula displacement meter, and the 4 2000 scale load measuring instrument is connected with the second strain-type oil pressure sensor; The one 2000 scale load measuring instrument, the 2 2000 scale load measuring instrument, the 3 2000 scale load measuring instrument are connected computing machine with the 4 2000 scale load measuring instrument.
For further realizing the purpose of this utility model, the described first work anchor slab, drive end lifting jack and the first instrument anchor slab are placed in the middle to the hole.
The described second work anchor slab, Partner lifting jack and the second instrument anchor slab are placed in the middle to the hole.
Described drive end lifting jack and Partner lifting jack are prestressed stretch-draw punching lifting jack.
The described first strain-type oil pressure sensor, the second strain-type oil pressure sensor are that quad connects the pressure-strain resistance sensor.
The utility model has following advantage and effect with respect to prior art:
1, the utility model carries out prestressed pore passage frictional resistance when test, can guarantee same duct presstressed reinforcing steel under evenly loading continuously, realizes synchronously in real time image data automatically, with existing measuring technology relatively, high experimental test accuracy is arranged;
When 2, the utility model carries out the test of prestressed pore passage frictional resistance, with strain-type oil pressure sensor and 2000 scale load measuring instruments, has synchronous digital ratio type, the novel modulus conversion technique of electric quantity balancing formula, provide ultrahigh resolution and high measurement accuracy, to improve measuring accuracy;
3, the present utility model has the precision height, uses extensively, easy and simple to handle, can realize in real time, automatically, remote monitoring and data acquisition, to short narrow, the occasion that insecure environments is measured down in the visual field specially for suitable.
Description of drawings
Fig. 1 is this practical prestressed pore passage frictional resistance test figure real-time automatic collecting device synoptic diagram;
Shown in the figure: drive end lifting jack 1, Partner lifting jack 2, the first oil pump 3-1, the second oil pump 3-2, the first strain-type oil pressure sensor 4-1, the second strain-type oil pressure sensor 4-2, the first rotary coding formula displacement meter 5-1, the second rotary coding formula displacement meter 5-2, the one 2000 scale load measuring instrument 6-1, the 2 2000 scale load measuring instrument 6-2, the 3 2000 scale load measuring instrument 6-3, the 4 2000 scale load measuring instrument 6-4, computing machine 7, the first work anchor slab 8-1, the second work anchor slab 8-2, the first instrument anchor slab 9-1, the second instrument anchor slab 9-2, steel wire bundle 10, the first instrument intermediate plate 11-1, the second instrument intermediate plate 11-2, the first duct hydraucone base 12-1, the second duct hydraucone base 12-2, duct 13, bridge structure body 14.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described, but the claimed scope of the utility model is not limited to the scope of embodiment statement.
As shown in Figure 1, a kind of prestressed pore passage frictional resistance test figure real-time automatic collecting device comprises: drive end lifting jack 1, Partner lifting jack 2, the first oil pump 3-1, the second oil pump 3-2, the first strain-type oil pressure sensor 4-1, the second strain-type oil pressure sensor 4-2, the first rotary coding formula displacement meter 5-1, the second rotary coding formula displacement meter 5-2, the one 2000 scale load measuring instrument 6-1, the 2 2000 scale load measuring instrument 6-2, the 3 2000 scale load measuring instrument 6-3, the 4 2000 scale load measuring instrument 6-4, computing machine 7, the first work anchor slab 8-1, the second work anchor slab 8-2, the first instrument anchor slab 9-1, the second instrument anchor slab 9-2, steel wire bundle 10, the first instrument intermediate plate 11-1 and the second instrument intermediate plate 11-2; Steel wire bundle 10 passes the first duct hydraucone base 12-1, duct 13 and the second duct hydraucone base 12-2 that is cast in bridge structure body 14, wherein an end of steel wire bundle 10 passes the first work anchor slab 8-1 successively, drive end lifting jack 1 is installed by the first instrument anchor slab 9-1 and the first instrument intermediate plate 11-1, and the other end of steel wire bundle 10 passes the second work anchor slab 8-2 successively, Partner lifting jack 2 is installed by the second instrument anchor slab 9-2 and the second instrument intermediate plate 11-2; The oil pipe that the oil inlet pipe oil that the first strain-type oil pressure sensor 4-1 is installed in drive end lifting jack 1 is chewed place, the first oil pump 3-1 connects the oil inlet pipe oil that drive end lifting jack 1, the second strain-type oil pressure sensor 4-2 is installed in Partner lifting jack 2 and chews place, second oil pump 3-2 oil pipe connection Partner lifting jack 2; The backguy end of the first rotary coding formula displacement meter 5-1 is installed in drive end lifting jack 1 oil cylinder end top, and its body is fixed on the drive end lifting jack 1 outer circle; The backguy end of the second rotary coding formula displacement meter 5-2 is installed in Partner lifting jack 2 oil cylinder end tops, and its body is fixed on the Partner lifting jack 2 outer circles; The first rotary coding formula displacement meter 5-1 and the second rotary coding formula displacement meter 5-2 are made up of backguy end, line and rotation photoelectricity sign indicating number device.When pulling backguy end, line just can order about rotation photoelectricity sign indicating number device and rotate, and realizes the conversion of displacement signal photoelectricity.During its work, the backguy end of the first rotary coding formula displacement meter 5-1 and the second rotary coding formula displacement meter 5-2 is fixed on the removable thing, rotation photoelectricity sign indicating number device is fixed on not on the animal, can Displacement Measurement change.All be provided with rotation photoelectricity sign indicating number device on the body of the first rotary coding formula displacement meter 5-1 and the second rotary coding formula displacement meter 5-2.The first strain-type oil pressure sensor 4-1 is connected with the one 2000 scale load measuring instrument 6-1, and the second strain-type oil pressure sensor 4-2 is connected with the one 2000 scale load measuring instrument 6-4; The first rotary coding formula displacement meter 5-1 is connected with the 2 2000 scale load measuring instrument 6-2, and the second rotary coding formula displacement meter 5-2 is connected with the 3 2000 scale load measuring instrument 6-3; The one 2000 scale load measuring instrument 6-1, the 2 2000 scale load measuring instrument 6-2, the 3 2000 scale load measuring instrument 6-3 are connected computing machine 7 respectively with the 4 2000 scale load measuring instrument 6-4.
The utility model first strain-type oil pressure sensor 4-1 is installed in the oil inlet pipe oil of drive end lifting jack 1 and chews the place, and its line and the one 2000 scale load measuring instrument 6-1 form drive end lifting jack dynamometric system; The second strain-type oil pressure sensor 4-2 is installed in the oil inlet pipe oil of Partner lifting jack 2 and chews the place, and its line and the 2 2000 scale load measuring instrument 6-3 form Partner lifting jack dynamometric system; The first rotary coding formula displacement meter 5-1 and the one 2000 scale load measuring instrument 6-2 form the oil cylinder elongation system of measuring drive end lifting jack 1; The second rotary coding formula displacement meter 5-2 and the 4 2000 scale load measuring instrument 6-4 form the oil cylinder elongation system of measuring Partner lifting jack 2; Each data line assembly is transferred to computing machine 7, promptly finishes real-time automatic data acquisition, storage and drawing function.
Drive end lifting jack 1 and Partner lifting jack 2 are general with prestressed stretch-draw punching lifting jack; The first strain-type oil pressure sensor 4-1, the second strain-type oil pressure sensor 4-2 are that quad connects the pressure-strain resistance sensor; The first rotary coding formula displacement meter 5-1, the second rotary coding formula displacement meter 5-2 adopt current mode (OPEN-COLLECT) circuit, pulse digital-to-analogue signal converter; The one 2000 scale load measuring instrument 6-1, the 2 2000 scale load measuring instrument 6-2, the 3 2000 scale load measuring instrument 6-3 and the 4 2000 scale load measuring instrument 6-4 are the high precision instruments that the input electric weight amplifies, quantizes and show, connect computing machine 7 by USB to RS232 twoport line.
Because lifting jack is done active stretch-draw in stretching process different with the cylinder internal friction of passive stretch-draw, its oil cylinder working-pressure is also different, and the voltage signal of the strain-type oil pressure sensor of the oil pressure of measurement lifting jack and the output of 2000 scale load measuring instruments is also with different.Before the test of prestress frictional resistance, the method that adopts the drive end lifting jack to connect with the Partner lifting jack and demarcate can be eliminated the deviation that is produced because of jack cylinder internal friction difference.So-called drive end lifting jack and the series connection of Partner lifting jack are demarcated, and in same device for pressure measurement overlapped in series about drive end lifting jack and the Partner lifting jack are carried out " calibration " exactly and demarcate.Before the demarcation, main, the oil-feed of Partner jack cylinder are stretched out about half of whole process oil cylinder; Inlet valve, the oil return valve of Partner lifting jack are all fastened.Timing signal only send oil to the drive end lifting jack, and promptly the drive end lifting jack loads for producing " power ", and the Partner lifting jack is in by the dynamic pressure load situation.At this moment, read device for pressure measurement power value, drive end lifting jack dynamometric system power value and Partner jack system power value simultaneously, with the dynamometric system power value number of device for pressure measurement power value number " calibration " drive end lifting jack and Partner lifting jack.
Prestressed pore passage frictional resistance test lifting jack installation and bridge construction prestressed stretch-draw operating mode in place, ground tackle is similar, convenient for mounting or dismounting equipment, test is installed as: drive end lifting jack 1 stretches out the oil cylinder front end the first work anchor slab 8-1, lifting jack rear end erecting tools anchor slab 9-1 is installed; Partner lifting jack 2 stretches out the oil cylinder front end the second work anchor slab 8-2, lifting jack rear end erecting tools anchor slab 9-2 is installed; Position, corresponding anchor slab hole installs steel wire bundle 10, and hydraucone, anchor slab and lifting jack central lines become an axis; Drive end lifting jack 1 is sent oil, is made its oil cylinder stretch out 4cm by the first oil pump 3-1, and Partner lifting jack 2 send oil, made its oil cylinder stretch out 16～18cm and cut out and send oil and oil return valve by the second oil pump 3-2, simultaneously erecting tools intermediate plate 11-1 and instrument intermediate plate 11-2.During test, each element, instrument place duty, each 2000 scale load measuring instrument is put " zero-bit ".During test, only sending oil to drive end lifting jack 1 is the monolateral stretch-draw of drive end, stretching force adds to by till the testing requirements, in the computing machine 7 of " assembly " each data line, measure the dynamometric system power value number of drive end lifting jack 1 and Partner lifting jack 2, its power value number " difference " is the friction resistance of prestressed pore passage existence.
As mentioned above, just can use the present utility model preferably.The foregoing description is one of preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model; Be that all equalizations of being done according to the utility model content change and modification, all contained by the utility model claim scope required for protection.
Claims (5)
1. a prestressed pore passage frictional resistance test figure real-time automatic collecting device is characterized in that: comprise drive end lifting jack, Partner lifting jack, first oil pump, second oil pump, the first strain-type oil pressure sensor, the second strain-type oil pressure sensor, the first rotary coding formula displacement meter, the second rotary coding formula displacement meter, the one 2000 scale load measuring instrument, the 2 2000 scale load measuring instrument, the 3 2000 scale load measuring instrument, the 4 2000 scale load measuring instrument and computing machine; Steel wire bundle passes the duct that is cast in the bridge structure body, one end of steel wire bundle passes the first work anchor slab more successively, the drive end lifting jack is installed by the first instrument anchor slab and the first instrument intermediate plate, and the other end of steel wire bundle passes the second work anchor slab more successively, the Partner lifting jack is installed by the second instrument anchor slab and the second instrument intermediate plate; The first strain-type oil pressure sensor is chewed with the drive end jack oil and is connected, and the second strain-type oil pressure sensor is chewed with the Partner jack oil and is connected; The body of the first rotary coding formula displacement meter is fixed on the drive end lifting jack, the backguy end of the first rotary coding formula displacement meter is fixed on drive end jack cylinder end, the body of the second rotary coding formula displacement meter is fixed on the Partner lifting jack, and the backguy end of the second rotary coding formula displacement meter is fixed on Partner jack cylinder end; First oil pump links to each other with the drive end lifting jack, and second oil pump links to each other with the Partner lifting jack; The one 2000 scale load measuring instrument links to each other with the first strain-type oil pressure sensor, the 2 2000 scale load measuring instrument links to each other with the first rotary coding formula displacement meter, the 3 2000 scale load measuring instrument is connected with the second rotary coding formula displacement meter, and the 4 2000 scale load measuring instrument is connected with the second strain-type oil pressure sensor; The one 2000 scale load measuring instrument, the 2 2000 scale load measuring instrument, the 3 2000 scale load measuring instrument are connected computing machine with the 4 2000 scale load measuring instrument.
2. prestressed pore passage frictional resistance test figure real-time automatic collecting device according to claim 1 is characterized in that: the described first work anchor slab, drive end lifting jack and the first instrument anchor slab are placed in the middle to the hole.
3. prestressed pore passage frictional resistance test figure real-time automatic collecting device according to claim 1 is characterized in that: the described second work anchor slab, Partner lifting jack and the second instrument anchor slab are placed in the middle to the hole.
4. prestressed pore passage frictional resistance test figure real-time automatic collecting device according to claim 1, it is characterized in that: described drive end lifting jack and Partner lifting jack are prestressed stretch-draw punching lifting jack.
5. prestressed pore passage frictional resistance test figure real-time automatic collecting device according to claim 1 is characterized in that: the described first strain-type oil pressure sensor, the second strain-type oil pressure sensor are that quad connects the pressure-strain resistance sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201219263U CN201615807U (en) | 2010-02-11 | 2010-02-11 | Device for automatically collecting pre-stressed duct friction test data on real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201219263U CN201615807U (en) | 2010-02-11 | 2010-02-11 | Device for automatically collecting pre-stressed duct friction test data on real time |
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| CN201615807U true CN201615807U (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201219263U Expired - Fee Related CN201615807U (en) | 2010-02-11 | 2010-02-11 | Device for automatically collecting pre-stressed duct friction test data on real time |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797267A (en) * | 2012-05-04 | 2012-11-28 | 上海交通大学 | Sealed open caisson side wall friction resistance meter |
| CN103884640A (en) * | 2014-03-21 | 2014-06-25 | 北京工业大学 | Prestressed pipeline friction testing apparatus and installation method of apparatus |
| CN103940735A (en) * | 2014-04-29 | 2014-07-23 | 湖南大学 | System for testing interface friction performance of anchor or pile and soil and test method |
| CN106680145A (en) * | 2015-11-05 | 2017-05-17 | 中国石油天然气股份有限公司 | Liquid pipeline friction drag determining device and method for using same |
| CN106908378A (en) * | 2017-02-15 | 2017-06-30 | 中国核工业华兴建设有限公司 | A kind of prestress hole road friction coefficient accurate measuring method |
| CN107830973A (en) * | 2017-09-28 | 2018-03-23 | 中国核工业华兴建设有限公司 | A kind of jack calibration device and scaling method |
| CN110514582A (en) * | 2019-08-27 | 2019-11-29 | 湖南联智桥隧技术有限公司 | A kind of prestress pipe segmentation friction loss detection system and detection method |
-
2010
- 2010-02-11 CN CN2010201219263U patent/CN201615807U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797267A (en) * | 2012-05-04 | 2012-11-28 | 上海交通大学 | Sealed open caisson side wall friction resistance meter |
| CN102797267B (en) * | 2012-05-04 | 2014-10-22 | 上海交通大学 | Sealed open caisson side wall friction resistance meter |
| CN103884640A (en) * | 2014-03-21 | 2014-06-25 | 北京工业大学 | Prestressed pipeline friction testing apparatus and installation method of apparatus |
| CN103884640B (en) * | 2014-03-21 | 2016-07-27 | 北京工业大学 | A kind of prestress pipe friction resistance test device and installation method thereof |
| CN103940735A (en) * | 2014-04-29 | 2014-07-23 | 湖南大学 | System for testing interface friction performance of anchor or pile and soil and test method |
| CN103940735B (en) * | 2014-04-29 | 2016-03-30 | 湖南大学 | The interface friction performance pilot system of a kind of anchor or oil and pile and test method |
| CN106680145A (en) * | 2015-11-05 | 2017-05-17 | 中国石油天然气股份有限公司 | Liquid pipeline friction drag determining device and method for using same |
| CN106908378A (en) * | 2017-02-15 | 2017-06-30 | 中国核工业华兴建设有限公司 | A kind of prestress hole road friction coefficient accurate measuring method |
| CN106908378B (en) * | 2017-02-15 | 2019-08-13 | 中国核工业华兴建设有限公司 | A kind of prestress hole road friction coefficient accurate measuring method |
| CN107830973A (en) * | 2017-09-28 | 2018-03-23 | 中国核工业华兴建设有限公司 | A kind of jack calibration device and scaling method |
| CN110514582A (en) * | 2019-08-27 | 2019-11-29 | 湖南联智桥隧技术有限公司 | A kind of prestress pipe segmentation friction loss detection system and detection method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20130211 |