CN101281190B - Multifunctional wheel rutting test - Google Patents
Multifunctional wheel rutting test Download PDFInfo
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- CN101281190B CN101281190B CN2008100180808A CN200810018080A CN101281190B CN 101281190 B CN101281190 B CN 101281190B CN 2008100180808 A CN2008100180808 A CN 2008100180808A CN 200810018080 A CN200810018080 A CN 200810018080A CN 101281190 B CN101281190 B CN 101281190B
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Abstract
The invention discloses a multifunction rut tester, wherein, the inner wall of a thermostatic box is equipped with temperature insulating material, the left lower corner of the thermostatic box is an air inlet, a main air blower and electric-heat wires are provided in the thermostatic box, the bottom of the inside of the thermostatic box is connected with a lifting and lowering mechanism, the upper portion of the lifting and lowering mechanism is connected with cross-slide ways, the upper portion of the cross-slide ways is a skateboard support, the skateboard support is connected with a force transmission apparatus through a deflecting rod, the force transmission apparatus is connected with a lower motor, a temperature sensor is mounted on the skateboard support, an experiment wheel is provided above the skateboard support, a speed-changer is mounted in the experiment wheel, a displacement sensor and an air pressure voltage-applying mechanism are totally connected to the controller and computer through data lines, and an elevating table is connected with the bracket. The inventive multifunction rut tester can truly evaluate high temperature deformation resistance capability of asphalt mixture at different states, effective control indoor asphalt mixture design and avoid forming of pavement rut.
Description
Technical field
The present invention relates to a kind of test evaluation equipment of asphalt high temperature rutting resistance, particularly a kind of multifunctional track tester.
Background technology
In present wheel tracking test, single test can only be tested a bitumen mixture specimen, and the dynamic stability of testing a compound test specimen just needs 1 hour, under the normal condition, can only test about 6～7 test specimens every day, and efficient is relatively low.The most important thing is that different pitches compound test specimen may stand environmental temperature fluctuation in test process, and the difference that this temperature fluctuation caused may have influence on the comparability of the test result between the different test specimens.
Real-life bituminous pavement is provided with the gradient and superelevation, and these factors all can cause the difference of road surface rutting resistance.But existing wheel tracking test instrument has only been simulated the situation of running car on surface level, make the true transport condition of existing test and automobile have a certain distance, evaluation result can not truly reflect the rutting resistance of asphalt under different longitudinal gradients and superelevation state, even evaluation result is opposite with actual conditions, influences choose reasonable mineral aggregate gradation and best asphalt content in the engineering.
These wheel tracking test instrument can only be measured the temperature of constant temperature oven, can not accurately measure the test specimen temperature inside.In addition, the control of the temperature of constant temperature oven realizes that by Infrared Heating its precision is also lower.Existing rut instrument comes to load to rolling wheel by applying ballasting method, and this load mode can cause the uncontinuity of counterweight, and precision is not high relatively, is used for simulated automotive overload, heavily loaded situation to implement cumbersome.The rut die trial of 300 * 300 * 50cm is made with alloy steel, and the rut plate is bearing in the die trial in the wheel tracking test, at the bottom of the plate be rigidity can not produce distortion.And the real roadbed in below, road surface is resilient in fact, is not perfect rigidity.Therefore, the high temperature rutting resistance of existing test findings meeting overrate asphalt.What the wheel tracking test instrument adopted is the rolling speed of 42 ± 1 times/min, can not change the get on the car influence of travel speed of reflection different brackets highway.
Summary of the invention
The objective of the invention is to overcome above-mentioned prior art deficiency, a kind of multifunctional track tester is provided, this test instrument can be simulated the situation on actual road surface more accurately, makes accurate evaluation, and can prolong service life of road surface, reduces cost.
Technical scheme of the present invention is achieved in that the constant temperature oven inwall is provided with the thermal insulation material, the constant temperature oven lower left corner is air inlet, in main air blower and heating wire are arranged, the bottom of constant temperature oven inside connects jacking gear, jacking gear top connects cross slide way, cross slide way top is the slide plate frame, the slide plate frame is connected with load transfer device by a curved bar, load transfer device is connected with following Electrical Discharge Machine, on the slide plate frame temperature sensor is set, there is experimental wheel slide plate frame top, and variator is housed in the experimental wheel, displacement transducer, the air pressure pressue device all connects controller and computer by data line, and lifting table is connected with support.
The constant temperature oven bottom is provided with the horizontal adjustment supporting leg.
Pulley is arranged at slide plate frame bottom.
Main air blower is connected with power supply respectively with heating wire, and power supply is connected with controller.
The present invention is by adopting the test of conventional rut instrument and this multifunctional track instrument relatively to identical asphalt, it is as shown in the table to obtain a result:
Asphalt mixture anti-rutting ability test result
As can be seen, the asphalt breadboard of similarity condition is tested, the end value maximum that standard draws, and the result of this test instrument under different condition is less, particularly under heavy duty and hot conditions, has a long way to go.And during Asphalt Mixture Design, dynamic stability is all stipulated minimum value usually, finds out from test findings, and the standard trial value is bigger, and when it met design requirement, actual road surface value may not reach the regulation minimum value.Will cause actual road surface the rut disease to occur like this, thereby influence the road usability, cause economic loss to estimate.And adopt this multifunctional track instrument to estimate from different perspectives, and more can record the actual road surface dynamic stability and the rut degree of depth exactly, control the generation of pavement track effectively, prolong service life of road surface.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the experimental wheel structural representation;
Below in conjunction with accompanying drawing content of the present invention is described in further detail.
With reference to shown in Figure 1, constant temperature oven 23 walls are provided with thermal insulation material 3, constant temperature oven 23 lower left corners are air inlet 6, in main air blower 7 and heating wire 8 are arranged, the bottom of constant temperature oven 23 inside connects jacking gear 19, jacking gear 19 tops connect cross slide way 16, cross slide way 16 tops are slide plate frame 18, slide plate frame 18 is connected with load transfer device 21 by a curved bar 22, and load transfer device 21 is connected with following Electrical Discharge Machine 20, and temperature sensor 10 is set on the slide plate frame 18, there is experimental wheel 14 slide plate frame 18 tops, variator 13 is housed, displacement transducer 11 in the experimental wheel 14, air pressure pressue device 12 all passes through data line 5 and connects controller 2 and computer 1, and lifting table 4 is connected with support 24.
With reference to shown in Figure 2, displacement transducer 11 has two, is separately fixed on the crossbeam, crossbeam is fixed on the steel framework, and the lower end contact of displacement transducer 11 can freely stretch, the bearing outer end of the tight contact test wheel in its end is along with the circle wheel bearing moves and the record change in displacement up and down.Because experimental wheel also can be along with moving up and down when moving up and down for the test wheel shaft, and displacement is identical.
Steel framework around air pressure loading device 12 is connecting, steel framework are divided into two parts up and down here, and two parts separately, and the first half is fixed, and links to each other with air pressure-loading; The piston apparatus that the latter half connects air pressure loading device 12 inside transmits pressure to the experimental wheel bearing, the payload values of control bottom experimental wheel.
Test temperature is set before the test, goes out fan and electrothermal wire power, import data into according to temperature sensor and regulate temperature automatically by computer control ventilating opening.Pack into behind the test specimen, the computer setting is the slope height in length and breadth, and computer is regulated the bottom elevation device automatically and reached requirement.Insulation reaches set point of temperature and after the time, payload values is set, and computer is regulated the air pressure pressue device automatically and reached setting.Experimental wheel speed is set, acquiescence regulation and stipulation value.After the experiment beginning, computer writes down the operating test opinion of experimental wheel payload values, temperature variation, speed automatically, generates real-time curve automatically.Experiment is calculated dynamic stability, saving result automatically according to design formula after finishing.
At first will put into the rut instrument, totally three by the rut plate that the requirement of standard (highway engineering pitch and asphalt testing regulations JTJ052-2000) is made.By controller opens multifunctional track instrument power supply, open computer and set test temperature and temperature retention time, be incubated.After reaching regulation test temperature and temperature retention time, longitudinal and transverse slope height is set in computer, reach requirement by low jacking gear 19.Test period also can be provided with by computer.By computer control lifting table 4 experimental wheel is put down, the speed and the loaded value of experimental wheel 14 is set, adjust automatically by inorganic speed change gear and air pressure loading device 12.Underground slide plate frame 18 can be by the computer setting, by beneath gearing control.In test parameters after setting completed, in computer, click beginning, test.If sudden problem is arranged in process of the test, can end test by computer termination and controller and handle.In process of the test, two temperature sensors are probe temperature all the time, regulates temperature automatically by computer control main air blower 7 and heating wire 8, guarantees in the error requirements scope.Test figure finally reaches whole process in the computer by displacement transducer 11, carries out data processing automatically.By import corresponding data in computer, computer can connect printer, data is printed formed report.
Claims (4)
1. multifunctional track instrument, comprise constant temperature oven (23), it is characterized in that, constant temperature oven (23) inwall is provided with thermal insulation material (3), constant temperature oven (23) lower left corner is air inlet (6), in main air blower (7) and heating wire (8) are arranged, the inner bottom of constant temperature oven (23) connects jacking gear (19), jacking gear (19) top connects cross slide way (16), cross slide way (16) top is slide plate frame (18), slide plate frame (18) is connected with load transfer device (21) by a curved bar (22), and load transfer device (21) is connected with following Electrical Discharge Machine (20), and temperature sensor (10) is set on the slide plate frame (18), there is experimental wheel (14) slide plate frame (18) top, variator (13) is housed, displacement transducer (11) in the experimental wheel (14), air pressure pressue device (12) connects controller (2) and computer (1), and lifting table (4) is connected with support (24).
2. multifunctional track instrument according to claim 1 is characterized in that, constant temperature oven (23) bottom is provided with horizontal adjustment supporting leg (15).
3. multifunctional track instrument according to claim 1 is characterized in that, pulley (17) is arranged at slide plate frame (18) bottom.
4. multifunctional track instrument according to claim 1 is characterized in that, main air blower (7) is connected with power supply respectively with heating wire (8), and power supply is connected with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100180808A CN101281190B (en) | 2008-04-25 | 2008-04-25 | Multifunctional wheel rutting test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100180808A CN101281190B (en) | 2008-04-25 | 2008-04-25 | Multifunctional wheel rutting test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101281190A CN101281190A (en) | 2008-10-08 |
| CN101281190B true CN101281190B (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100180808A Expired - Fee Related CN101281190B (en) | 2008-04-25 | 2008-04-25 | Multifunctional wheel rutting test |
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| CN (1) | CN101281190B (en) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509854B (en) * | 2009-03-17 | 2010-12-08 | 长沙理工大学 | Rut test piece temperature gradient emulation apparatus |
| CN102147343B (en) * | 2010-02-04 | 2013-03-20 | 中华人民共和国上海出入境检验检疫局 | High-temperature stacking test device for packing container |
| CN101915710B (en) * | 2010-07-23 | 2012-05-30 | 武汉理工大学 | Simulation test method of road surface anti-skidding overlaying material falling particle and testing equipment thereof |
| CN101929124B (en) * | 2010-08-17 | 2012-06-06 | 交通运输部公路科学研究所 | Performance measurement method of vehicle-carried rut meter |
| CN102011361B (en) * | 2010-09-14 | 2012-05-02 | 交通运输部公路科学研究所 | Performance metering method of vehicle-mounted laser evenness instrument |
| CN103323580B (en) * | 2013-05-14 | 2016-03-02 | 山西省交通科学研究院 | A kind of simulator can simulating asphalt pavement rut under longitudinal gradient condition |
| CN104215498B (en) * | 2013-05-29 | 2016-10-05 | 福州美德实验仪器有限公司 | A kind of multifunctional track tester |
| CN105300795B (en) * | 2014-06-18 | 2018-02-02 | 上海宝冶钢渣综合开发实业有限公司 | A kind of detection method of slag product stability |
| CN104090092A (en) * | 2014-07-02 | 2014-10-08 | 长沙理工大学 | Coarse aggregate injection test device and coarse aggregate injection test method based on asphalt mixture tester |
| CN105277454A (en) * | 2015-11-10 | 2016-01-27 | 昆山市交通工程试验检测中心 | Asphalt mixed material wheel tracking testing device |
| CN105241749B (en) * | 2015-11-10 | 2019-02-12 | 昆山市交通工程试验检测中心有限公司 | A kind of modified asphalt mixture in track test device |
| CN105784518B (en) * | 2016-04-26 | 2018-10-09 | 长安大学 | A kind of experimental rig and method of evaluation asphalt pavement structural layer anti-rut behavior |
| CN105954113B (en) * | 2016-04-26 | 2019-03-29 | 长安大学 | A kind of asphalt circuit wheel tracking test device and test method |
| CN105910933B (en) * | 2016-06-08 | 2019-09-24 | 山西省交通科学研究院 | A kind of asphalt anti-slide performance die-away test test device |
| CN106018145B (en) * | 2016-06-21 | 2019-02-15 | 长安大学 | A kind of sealing abrasion performance of mist containing sand and the simultaneous determination device of load scab |
| CN106093360B (en) * | 2016-08-01 | 2019-04-26 | 山西省交通科学研究院 | A kind of the asphalt pavement rut tester and its test method of simulated rainfall |
| CN106771103B (en) * | 2016-11-09 | 2019-03-15 | 长安大学 | Measuring Device in a kind of orientation continous way room |
| CN107063902B (en) * | 2017-04-08 | 2019-12-13 | 温州信达交通工程试验检测有限公司 | rut test device and rut test method based on same |
| CN108732085A (en) * | 2017-04-20 | 2018-11-02 | 交通运输部公路科学研究所 | A kind of asphalt disperses detecting system |
| CN108151898A (en) * | 2018-01-05 | 2018-06-12 | 重庆大学 | A kind of steel box girder bridge simulation temperature measurement device |
| CN108508190A (en) * | 2018-04-18 | 2018-09-07 | 长沙理工大学 | A kind of vehicle tracking test instrument under simulation braking state |
| CN109448529A (en) * | 2018-12-12 | 2019-03-08 | 桂林理工大学 | Multi-state road surface accelerated loading teaching test instrument |
| CN110044741A (en) * | 2019-04-29 | 2019-07-23 | 山东省交通科学研究院 | A kind of multipoint mode asphalt high temperature anti-rut behavior evaluation method |
| CN112525740A (en) * | 2020-07-20 | 2021-03-19 | 宝丰县公路管理局 | Rut test device and double-wheel dynamic stability calculation method |
| CN112881217B (en) * | 2021-01-19 | 2022-08-16 | 东南大学 | Improved asphalt mixture rutting experimental device and experimental method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0688902A1 (en) * | 1994-06-17 | 1995-12-27 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. | Continuous measuring method of the resistance to lateral displacement of a railway track |
| CN2335140Y (en) * | 1998-07-29 | 1999-08-25 | 吴素钦 | Automatic vehicle tracking test instrument |
| CN2357036Y (en) * | 1998-12-28 | 2000-01-05 | 刘子荣 | Tracing rut tester |
| CN1789961A (en) * | 2005-12-26 | 2006-06-21 | 长安大学 | Indoor rotary wheel rutting test machine for asphalt mixture |
| CN201196645Y (en) * | 2008-04-25 | 2009-02-18 | 长安大学 | Multifunctional track test apparatus |
-
2008
- 2008-04-25 CN CN2008100180808A patent/CN101281190B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0688902A1 (en) * | 1994-06-17 | 1995-12-27 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. | Continuous measuring method of the resistance to lateral displacement of a railway track |
| CN2335140Y (en) * | 1998-07-29 | 1999-08-25 | 吴素钦 | Automatic vehicle tracking test instrument |
| CN2357036Y (en) * | 1998-12-28 | 2000-01-05 | 刘子荣 | Tracing rut tester |
| CN1789961A (en) * | 2005-12-26 | 2006-06-21 | 长安大学 | Indoor rotary wheel rutting test machine for asphalt mixture |
| CN201196645Y (en) * | 2008-04-25 | 2009-02-18 | 长安大学 | Multifunctional track test apparatus |
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| CN101281190A (en) | 2008-10-08 |
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Granted publication date: 20111123 Termination date: 20120425 |