CN201397283Y - Construction site concrete rheology behavior dynamic inspection device - Google Patents
Construction site concrete rheology behavior dynamic inspection device Download PDFInfo
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- CN201397283Y CN201397283Y CN2009200457469U CN200920045746U CN201397283Y CN 201397283 Y CN201397283 Y CN 201397283Y CN 2009200457469 U CN2009200457469 U CN 2009200457469U CN 200920045746 U CN200920045746 U CN 200920045746U CN 201397283 Y CN201397283 Y CN 201397283Y
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Abstract
The utility model discloses a construction site concrete rheology behavior dynamic inspection device, which mainly consists of a bracket, a torque sensor, a stepping motor, a track motor, a drive gear, a rack, a cross stirring shaft, a material box start and stop motor, a pulley, position switches, a coupler, a material box scraper plate, a single-chip controller, a temperature sensor, guide rails, guide rollers, a material box and a filter screen. The top part of the bracket of a tester is provided with a pair of mutually parallel guide rails; the guide rails are provided with the guide rollers, the material box and the scraper plate of the material box; the guide rails are also provided with the position switches; the rack is arranged above the guide rails and parallel to the guide rails; the rack is connected with the track motor through the drive gear; the material box is provided with the filter screen; the prostration cross stirring shaft is arranged in the material box; the prostration cross stirring shaft is connected with the stepping motor through the coupler; the coupler is provided with the torque sensor; the material box is provided with the temperature sensor; the material box is connected with the material box start and stop motor through the pulleys; and the bracket is provided with the single-chip controller.
Description
Technical field
The utility model relates to chutable concrete rheology testing field, specifically relates to its device of detection of rheological property of concrete on construction site energy.
Background technology
To concrete rheological test of fluidised form and evaluation is one of important step of concrete Quality Control always.Chutable concrete belongs to non-Newtonian fluid, wherein two rheological parameters the most basic: the shear stress yield value τ of slurry
0Plastic viscosity η with slurry
pIt is the leading indicator of reflection concrete mortar rheological.Working-yard use at present also is at most that the method for the test rheological property of concrete of most convenient is the slump test.Estimate concrete rheological with slump and exist many defectives: its only suitable consistency range is medium plastic to high plastic consistency range 3.8～17.8cm's, and this method is quite responsive to irregular operation, needs certain operation skill; For poor mix, the slump method can not be measured the difference of two kinds of different mixs of denseness; Even if the concrete that slump is identical, stability as segregation, bleeding may be widely different; Also inapplicable to big rheological concrete.Also have in addition test at the construction field (site) that big rheological concrete flow velocity changes as: with L type flow instrument, Orimet current meter etc., but cooperate slump tester or V-B consistometer etc. could judge concrete flowability and serviceability, these method measuring points are few, random error strong, hand-manipulated is big and can't complete objective evaluation to the deposit concrete rheological.
The method that some other novel test rheological property of concrete is also arranged in the engineering practice at present, these methods all are based on the shear stress yield value τ of two-point method principle test chutable concrete
0Plastic viscosity η with slurry
pBut these testing tools and method can only be obtained a small amount of discrete data at the scene by a small amount of measuring point of manual control random test, and nationality can't accurately be passed judgment on the variation of monolithic concrete rheological to estimate concrete rheological property.
It is the important evidence that the monolithic concrete rheological is passed judgment on that the working-yard can obtain the preceding rheological property of concrete parameter of all cast in real time, and also quality control provides the reliable technique index to Concrete Construction.Obviously rely on above-mentioned all multiple method of testings to satisfy and obtain the complete parameter that the monolithic concrete rheological is passed judgment on, therefore can not objective and accurate evaluation be arranged the rheological property of concrete of cast.
Summary of the invention
In order to overcome the shortcoming that currently used rheological property of concrete means of testing can't accurately be passed judgment on the variation of monolithic concrete rheological, the utility model discloses a kind of rheological property of concrete on construction site device for dynamically detecting, can make correct evaluation the sex change of concrete bulk flow.
The technical solution of the utility model is: a kind of rheological property of concrete on construction site device for dynamically detecting, described device is mainly by support, torque sensor, stepper motor, orbit motor, transmission gear, tooth bar, cross shaft, magazine opens and closes motor, pulley, travel switch, shaft coupling, the magazine scraper plate, singlechip controller, temperature sensor, guide rail, guide wheel, magazine and filter screen are formed, a top of the trellis of tester is provided with a pair of guide rail that is parallel to each other, guide rail is provided with guide wheel, magazine and magazine scraper plate, on guide rail, be provided with travel switch, above guide rail, be parallel to guide rail and be provided with tooth bar, tooth bar is connected with orbit motor by transmission gear, magazine is provided with filter screen, be provided with the flat cross shaft that crouches in the magazine, the flat cross shaft that crouches is connected with stepper motor by shaft coupling, on shaft coupling, be provided with torque sensor, on magazine, be provided with temperature sensor, magazine opens and closes motor by pulley and magazine and is connected, and support is provided with singlechip controller.The described flat cross shaft that crouches is made up of turning axle, rotating vane, and rotating vane is fixed on the turning axle by fixed screw.On tester bracket, be provided with relay, cut-offing protecting switch, power supply, voltage stabilizer, regulator.
Automatically gather the concrete mix sample from the stirring machine discharging opening, the temperature T of the concrete mix sample that test is gathered
j, and same temperature T
jUnder, different rotating speeds n
JiUnder rotation torque M
JiConcrete steps be: after the test beginning, magazine moves to stirring machine discharging opening below and accesses concrete mix sample to be measured, accesses to finish, and magazine retreats and leaves stirring machine discharging opening below, temperature sensor probe temperature T
j, the cross shaft in the magazine begins with different rotating speeds from low to high simultaneously, and speed change from high to low stirs again, and velocity range is 60 commentaries on classics/min～200 commentaries on classics/min, and torque sensor is measured rotary torque M simultaneously
Ji, to test the magazine gate that finishes and open, slurry flows out, once more sampling.
Having adopted a single-chip computer control system in the utility model, to realize automatic cycle testing, is to be MPU with single-chip microcomputer MSP430, mainly is divided into three parts.
The first, measure portion.The main amount of measuring has two, and the one, temperature T
j, purpose is the real time temperature of monitored concrete, another is rotary torque M
Ji, purpose is to measure concrete rheological characteristics.These data that record all are stored on the single-chip microcomputer.
The second, control motor part.This part mainly is by the sampling of the advance and retreat of the magazine of Single-chip Controlling tester, has adopted that the speed change of cross shaft stirs and discharging behind the sample.Wherein the speed that stirs of speed change can stepping, such as being divided into 6 grades between 60～200 commentaries on classics/minin.
The 3rd, communication part.This part is divided into man-machine interaction and computing machine communication two parts again.Wherein man-machine interaction comprises input media keyboard and output unit LCD LCD, can control the switch of whole tester, and with the temperature T that records
jWith rotary torque M
JiReal-time demonstration.The computing machine communication is that the data of will store are transferred to host computer by MAX232, by host computer data is carried out Treatment Analysis.
Beneficial effect:
1. the employed device material of the utility model sample collection automatically, movement, closely knit, test, feed back, gather again; Energy is on-line testing discharging opening concrete flow variable element continuously; Obtain the rheological property of concrete on construction site parameter in time, conveniently, accurately, continuously, and concrete rheological is formed objective complete evaluation.
2. owing to adopt the flat cross shaft speed change that crouches to rotate, more meet the heterogeneous fluid that test contains thickness particles such as rubble, sand, the follow-on test concrete, can obtain a large amount of discrete sample datas, this method is applied to engineering practice, the defective of other method of testings of sum of errors sign property difference be can avoid artificially detecting, precision, robotization, informationization really realized.
Description of drawings
Fig. 1-tester schematic top plan view.
Fig. 2-tester groundwork part front view.
Fig. 3-tester groundwork part right view.
Fig. 4-cross shaft front view.
Fig. 5-cross shaft right view.
Embodiment
Below in conjunction with accompanying drawing the utility model is made an explanation:
Employed tester mainly opens and closes motor 7, pulley 8, travel switch (containing contact lever) 9, shaft coupling 10, relay 11, magazine scraper plate 12, MSP430 singlechip controller 13, cut-offing protecting switch 14,24V power supply 15, voltage stabilizer 16, regulator 17, temperature sensor 18, guide rail 19, guide wheel 20, rotating vane 21, turning axle 22, fixed screw 23, magazine 24 and filter screen 25 by torque sensor 1, stepper motor 2, orbit motor 3, transmission gear 4, tooth bar 5, cross shaft 6, magazine and forms shown in Fig. 1～5 in the utility model.A top of the trellis of tester is provided with a pair of guide rail that is parallel to each other 19, and guide rail 19 is provided with guide wheel 20, magazine 24 and magazine scraper plate 12, and travel switch 9 before and after also being provided with on guide rail 19 is with the extreme position of control magazine motion.Be parallel to guide rail and be provided with tooth bar 5 above guide rail, tooth bar 5 is connected with orbit motor 3 by transmission gear 4.Magazine 24 is provided with filter screen 25, be provided with the flat cross shaft 6 that crouches in the magazine 24, the flat cross shaft 6 that crouches is connected with stepper motor 2 by shaft coupling 10, on shaft coupling, be provided with torque sensor 1, also be provided with temperature sensor 18 on magazine 24, magazine 24 opens and closes motor 7 by pulley 8 and magazine and is connected the knife switch discharging that is used for controlling magazine 24 bottoms.The flat cross shaft 6 that crouches is made up of turning axle 22, rotating vane 21, and rotating vane 21 is fixed on the turning axle 22 by fixed screw 23.Magazine 24 can slide along guide rail 19 under the drive of orbit motor 3 by transmission gear 4, tooth bar 5.In order to guarantee the normal operation of whole device, on tester bracket, also be provided with relay 11, MSP430 singlechip controller 13, cut-offing protecting switch 14, power supply 15, voltage stabilizer 16, regulator 17.
Test job begins, start start button, pilot lamp is bright, magazine 24 is by transmission gear 4, tooth bar 5 advances under the drive of orbit motor 3, discharging opening place during to guide rail 19 tops, touch travel switch 9, halt and begin to connect material, chutable concrete enters magazine 24 by filter screen 25 elimination super-size aggregates, magazine 24 stops to retreat behind the 20s, unnecessary concrete scrapes off by magazine scraper plate 12 on the filter screen 25, after touching travel switch 9, stop to retreat, measure the concrete temperature index by the temperature sensor of settling in the magazine 24 18, simultaneously, cross shaft 6 is rotated by 60 commentaries on classics/min～90 commentaries on classics/min-120 commentaries on classics/min～150 commentaries on classics/min-180 commentaries on classics/min～200 commentaries on classics/min～180 commentaries on classics/min-150 commentaries on classics/min～120 commentaries on classics/min-90 commentaries on classics/min～60 commentaries on classics/min under stepper motor 2 drives, rotating required driving torque is measured by torque sensor 1, represent with voltage, demonstration also is stored on the MSP430 singlechip controller 13, test finishes, magazine opens and closes motor 7 and opens, the gate of magazine bottom is opened, slurry flows out, discharge process continues about 10s, magazine opens and closes motor 7 and closes, the magazine bottom gate closes behind the time-delay 7s, a loop ends and then enter circulation next time behind the time-delay 5s.
Claims (3)
1. rheological property of concrete on construction site device for dynamically detecting, it is characterized in that, described device is mainly by support, torque sensor (1), stepper motor (2), orbit motor (3), transmission gear (4), tooth bar (5), cross shaft (6), magazine opens and closes motor (7), pulley (8), travel switch (9), shaft coupling (10), magazine scraper plate (12), singlechip controller (13), temperature sensor (18), guide rail (19), guide wheel (20), magazine (24) and filter screen (25) are formed, a top of the trellis of tester is provided with a pair of guide rail that is parallel to each other (19), guide rail (19) is provided with guide wheel (20), magazine (24) and magazine scraper plate (12), on guide rail (19), be provided with travel switch (9), above guide rail, be parallel to guide rail and be provided with tooth bar (5), tooth bar (5) is connected with orbit motor (3) by transmission gear (4), magazine (24) is provided with filter screen (25), be provided with the flat cross shaft (6) that crouches in the magazine (24), the flat cross shaft (6) that crouches is connected with stepper motor (2) by shaft coupling (10), on shaft coupling (10), be provided with torque sensor (1), on magazine (24), be provided with temperature sensor (18), magazine (24) opens and closes motor (7) by pulley (8) and magazine and is connected, and support is provided with singlechip controller (13).
2. rheological property of concrete on construction site device for dynamically detecting as claimed in claim 1, it is characterized in that, the described flat cross shaft (6) that crouches is made up of turning axle (22), rotating vane (21), and rotating vane (21) is fixed on the turning axle (22) by fixed screw (23).
3. rheological property of concrete on construction site device for dynamically detecting as claimed in claim 1 is characterized in that, is provided with relay (11), cut-offing protecting switch (14), power supply (15), voltage stabilizer (16), regulator (17) on tester bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200457469U CN201397283Y (en) | 2009-05-15 | 2009-05-15 | Construction site concrete rheology behavior dynamic inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200457469U CN201397283Y (en) | 2009-05-15 | 2009-05-15 | Construction site concrete rheology behavior dynamic inspection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201397283Y true CN201397283Y (en) | 2010-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200457469U Expired - Fee Related CN201397283Y (en) | 2009-05-15 | 2009-05-15 | Construction site concrete rheology behavior dynamic inspection device |
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|---|---|
| CN (1) | CN201397283Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305844A (en) * | 2011-05-24 | 2012-01-04 | 北京工业大学 | Soil pressure cabin model device for soil pressure balance shield construction soil body improvement experiment |
| CN102661915A (en) * | 2012-04-28 | 2012-09-12 | 同济大学 | Impact rolling model tester and application thereof |
| CN105021800A (en) * | 2015-07-23 | 2015-11-04 | 北京中企卓创科技发展有限公司 | Airport dry hard concrete rheological property test system |
| CN106840968A (en) * | 2017-01-20 | 2017-06-13 | 河海大学 | The on-line Full method of testing of rheological parameters of fresh mixed concrete |
| CN108818934A (en) * | 2018-03-15 | 2018-11-16 | 厦门理工学院 | A kind of ultra-high performance concrete blender of measurable flow variable element |
| CN111650088A (en) * | 2020-06-10 | 2020-09-11 | 河海大学 | Real-time detection method for rheological property of fluid concrete mixture |
| CN112454656A (en) * | 2020-10-27 | 2021-03-09 | 北京交通大学 | Concrete plastic viscosity real-time monitoring equipment and method |
-
2009
- 2009-05-15 CN CN2009200457469U patent/CN201397283Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305844A (en) * | 2011-05-24 | 2012-01-04 | 北京工业大学 | Soil pressure cabin model device for soil pressure balance shield construction soil body improvement experiment |
| CN102305844B (en) * | 2011-05-24 | 2013-11-27 | 北京工业大学 | Soil pressure cabin model device for soil pressure balance shield construction soil body improvement experiment |
| CN102661915A (en) * | 2012-04-28 | 2012-09-12 | 同济大学 | Impact rolling model tester and application thereof |
| CN105021800A (en) * | 2015-07-23 | 2015-11-04 | 北京中企卓创科技发展有限公司 | Airport dry hard concrete rheological property test system |
| CN106840968A (en) * | 2017-01-20 | 2017-06-13 | 河海大学 | The on-line Full method of testing of rheological parameters of fresh mixed concrete |
| CN108818934A (en) * | 2018-03-15 | 2018-11-16 | 厦门理工学院 | A kind of ultra-high performance concrete blender of measurable flow variable element |
| CN111650088A (en) * | 2020-06-10 | 2020-09-11 | 河海大学 | Real-time detection method for rheological property of fluid concrete mixture |
| CN112454656A (en) * | 2020-10-27 | 2021-03-09 | 北京交通大学 | Concrete plastic viscosity real-time monitoring equipment and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100203 Termination date: 20120515 |