CN203595634U - Multifunctional asphalt pavement durability tester - Google Patents

Multifunctional asphalt pavement durability tester Download PDF

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Publication number
CN203595634U
CN203595634U CN201320664687.XU CN201320664687U CN203595634U CN 203595634 U CN203595634 U CN 203595634U CN 201320664687 U CN201320664687 U CN 201320664687U CN 203595634 U CN203595634 U CN 203595634U
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CN
China
Prior art keywords
constant temperature
asphalt pavement
temperature oven
controller
durability tester
Prior art date
Application number
CN201320664687.XU
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Chinese (zh)
Inventor
田耀刚
王坤
姜守东
李炜光
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长安大学
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Priority to CN201320664687.XU priority Critical patent/CN203595634U/en
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Publication of CN203595634U publication Critical patent/CN203595634U/en

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Abstract

The utility model discloses a multifunctional asphalt pavement durability tester. A water pipe and a spray nozzle are mounted on the upper surface inside a thermostat; a transverse guide rail is paved on the lower surface inside the thermostat; a sliding plate frame is paved on the guide rail, passes though a curved bar at the bottom of the thermostat and is connected with a gearbox; the gearbox is connected with a motor; the sliding plate frame can slide along the transverse guide rail and is used for placing to-be-tested samples; a bracket is arranged on the lower surface inside the thermostat on one side of the transverse guide rail; a lifting mechanism capable of moving along the bracket longitudinally is mounted on the bracket; a test wheel is mounted at one end of the lifting mechanism; a transmission is mounted on the test wheel and used for controlling the rotational speed of the test wheel. The multifunctional asphalt pavement durability tester can evaluate the durability of repair material under the coupling conditions of rainfall, temperature and heavy load, and the tester is small in size, easy to placed, and simple to operate.

Description

A kind of Multifunctional asphalt pavement durability tester
Technical field
The utility model belongs to road traffic field, relates to a kind of bituminous pavement tester, is specifically related to a kind of Multifunctional asphalt pavement durability tester.
Background technology
Highway in China development rapidly, thereby engineering construction quality and operation road technology status supervision examination criteria are had higher requirement, in actual conditions, durability of asphalt pavement is affected by many-sided factor, and therefore current checkout equipment is in urgent need to be improved and complete.
Actual asphalt pavement is subject to the impact of super-heavy load traffic, and pavement durability reduces greatly.During to laboratory build-in test, also restricted to load, for the simulation of overweight load situation, implement more complicated, and can only measure the temperature of constant temperature oven, can not accurately measure the temperature of test specimen inside, can not test under condition of raining the impact of road pavement actual conditions.These factors make test and actual road surface situation have gap, thereby the result of evaluating can not truly reflect actual situation, even there will be larger error.
Existing durability tester is experimental facilities heaviness not only, and test method complexity, for utilizing mini-plant test, can only utilize Measuring Device to test, but it can not react the different brackets highway destruction situation that the impact of stability, anti-crack ability and the many factors of pavement structure causes under the effect of different travel speeds of getting on the car.Actual pavement of road stands many factors impact, for example main result under rainfall, high temperature, heavily loaded coupling.
Summary of the invention
The shortcomings and deficiencies that exist for prior art, the purpose of this utility model is to provide a kind of Multifunctional asphalt pavement durability tester, can simulate more accurately the situation on actual road surface, make performance evaluation accurately, and overcome the shortcomings such as equipment heaviness, complicated operation.
In order to realize above-mentioned task, the utility model adopts following technical scheme to be achieved:
A kind of Multifunctional asphalt pavement durability tester, comprise controller, controller is by computer control, the input end of controller is connected with displacement transducer with temperature sensor, the output terminal of controller respectively with the heating unit of constant temperature oven, air pressure-loading mechanism is connected with variator, constant temperature oven inside upper surface is provided with water pipe and shower nozzle, constant temperature oven bottom inner surface is equipped with cross slide way, on guide rail, be equipped with slide plate frame, described slide plate frame is by being connected with gear case through the curved bar of insulation can bottom, gear case is connected with motor, slide plate frame transversely guide rail laterally slides and is used for placing sample to be tested, on the constant temperature oven bottom inner surface of cross slide way one side, be provided with support, the elevating mechanism that can vertically move along support is installed on support, elevating mechanism is connected with air pressure-loading mechanism, air pressure-loading mechanism end is provided with experimental wheel, air pressure-loading mechanism is used to experimental wheel that load is provided, variator is installed, for the rotating speed of Control experiment wheel on experimental wheel,
Described temperature sensor is arranged on the inwall of constant temperature oven, and described displacement transducer is arranged on elevating mechanism.
The utility model also has following technical characterictic:
The top of described elevating mechanism is provided with a hand crank, and for regulating lifting experimental wheel, adjustable height scope is 5cm~35cm.
The inner surperficial upper berth of described constant temperature oven is provided with one layer of heat preservation layer.
Described constant temperature oven is provided with Level tune support on outside bottom surface.
Described constant temperature oven inner and upper is provided with sprays shape shower nozzle.
The utility model compared with prior art, has following technique effect:
The utility model can carry out the repair materials durability evaluation under precipitation, temperature and heavy duty coupling, tester wheel load of the present utility model can regulate within the scope of 0.7~1.4MPa, heat riser is installed in constant temperature oven, top is installed one and is sprayed shape shower nozzle, the performance on road surface can simulated rainfall environment time; Adjustable for compaction speed, can simulate the test result of different rates; Under can Reality simulation situation, pavement durability evaluation when surface layer and basic unit's combination; Tester volume of the present utility model is little, is easy to lay, simple to operate.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model.
Fig. 2 is control section annexation schematic diagram of the present utility model.
In figure, the implication of each label is: 1-controller, 2-computer, 3-constant temperature oven, 4-heating unit, 5-cross slide way, 6-slide plate frame, 7-curved bar, 8-gear case, 9-motor, 10-support, 11-elevating mechanism, 12-experimental wheel, 13-variator, 14-water pipe, 15-shower nozzle, 16-heat-insulation layer, 17-temperature sensor, 18-displacement transducer, 19-Level tune support, 20-air pressure-loading mechanism.
Below in conjunction with drawings and Examples, particular content of the present utility model is described in more detail.
Embodiment
Below provide specific embodiment of the utility model, it should be noted that the utility model is not limited to following specific embodiment, all equivalents of doing on present techniques scheme basis all fall into protection domain of the present utility model.
Defer to technique scheme, as depicted in figs. 1 and 2, the present embodiment provides a kind of Multifunctional asphalt pavement durability tester, comprise controller 1, controller 1 is by computer control, the input end of controller 1 is connected with displacement transducer 18 with temperature sensor 17, the output terminal of controller 1 respectively with the heating unit 4 of constant temperature oven 3, air pressure-loading mechanism 20 is connected with variator 13, constant temperature oven 3 inside upper surface are provided with water pipe 14 and shower nozzle 15, constant temperature oven 3 bottom inner surfaces are equipped with cross slide way 5, on cross slide way 5, be equipped with slide plate frame 6, described slide plate frame 6 is by being connected with gear case 8 through the curved bar 7 of constant temperature oven 3 bottoms, gear case 8 is connected with motor 9, slide plate frame 6 transversely guide rail 5 laterally slides and is used for placing sample to be tested, on constant temperature oven 3 bottom inner surfaces of cross slide way 5 one sides, be provided with support 10, the elevating mechanism 11 that can vertically move along support 10 is installed on support 10, elevating mechanism 11 is connected with air pressure-loading mechanism 20, air pressure-loading mechanism 20 ends are provided with experimental wheel 12, air pressure-loading mechanism 20 is used to experimental wheel 12 that load is provided, variator 13 is installed, for the rotating speed of Control experiment wheel 12 on experimental wheel 12,
Described temperature sensor 17 is arranged on the inwall of constant temperature oven 3, and described displacement transducer 18 is arranged on elevating mechanism 11.
A crank is installed on elevating mechanism 11, for lifting experimental wheel 12, adjustable height scope 5cm~35cm.
The inner surperficial upper berth of constant temperature oven 3 is provided with one layer of heat preservation layer 16.
Constant temperature oven 3 is provided with Level tune support 19 on outside bottom surface.
Controller 1 adopts controller to adopt panasonic PLC controller, is Beijing space flight space flight observation and control technology Research Institute.This tester be temperature automatically controlled, self-clocking, time the real displacement variable that shows rut, and automatically record displacement curve, temperature variation curve, printing reports.Tester carries software, is Beijing space flight space flight observation and control technology Research Institute, and code is CZ vehicle tracking test instrument software.
Air pressure-loading mechanism 20 is connecting steel framework around, and steel framework is divided into upper and lower two parts, and two parts separately, and the first half is fixed, and is connected with air pressure-loading; The latter half connects the piston apparatus transmission of pressure of air pressure-loading mechanism 20 inside to experimental wheel bearing, is used to experimental wheel 12 that load is provided.
It should be noted that the direction of motion that longitudinally refers to experimental wheel 12 in the utility model, laterally refer to the direction perpendicular with the direction of motion of experimental wheel 12, so can guarantee that slide plate frame 6 can not move when experimental wheel 12 moves, the degree of accuracy of warranty test and accuracy.
The course of work of the present utility model is as described below:
Before test, first power supply is connected, confirmation power electric is three-phase and four-line, and wherein yellow/green cable is zero line.Connecting rear application table measurement confirms to install errorless.Urgency is stopped to knob Unscrew power supply to the right, and this Time Controller 1 has demonstration.The knob of backing pump start and stop is to the right opened oil pump power supply, and pressing the experimental wheel 12 button experimental wheel of walking can seesaw freely.Control heating unit 4 by computer 2, test temperature is arranged, design temperature, imports data into by temperature sensor 17, and temperature starts to heat automatically.
After temperature constant, advising (JTJ052-2000) by highway engineering pitch and Asphalt Mixture Experiment, the sample to be tested (rut plate) of making is put on the cross slide way 5 of tester and locking, notes: in the time that die trial is put into, experimental wheel must be in the centre position of stroke, otherwise should adjust.Manually opened shower nozzle 15, simulates precipitation.In constant temperature oven 3, be incubated, reach after regulation test temperature and temperature retention time, vertically move jacking gear 11 make it reach requirement by crank, adjustable height can be at 5~35cm.After preliminary work, after on-test, temperature automatically controlled, self-clocking, time the real displacement variable that shows rut, and automatically record displacement curve, temperature curve, printing reports.If there is sudden problem in process of the test, can end test by computer 2 or controller 1, process.After experiment finishes, automatically calculate dynamic stability, saving result according to design formula.
The utility model passes through under the various test conditions such as overload, precipitation, high temperature, the comprehensive force-bearing situation in comprehensive real simulation road surface, while displaying time and displacement, time and temperature variation curve when test, for Research on Asphalt Mixture durability characteristics provides practical basis.Can test surface layer and basic unit's combination, identical asphalt, by experimental result, is obtained a result as shown in table 1:
Table 1 asphalt experimental result
Can obviously be found out by test findings in upper table, Asphalt Mixture Experiment plate to similarity condition is tested, the result maximum that standard draws, and the result of this test instrument under different condition is relatively little, particularly, under super-heavy load, high temperature and precipitation condition, have a long way to go.Common Measuring Device test can not reflect road surface actual conditions comprehensively, will cause so actual road surface to occur rut disease, thereby affect usage capability of road, causes economic loss to estimate.Therefore adopt the permanance of this tester evaluation bituminous pavement more conservative, accurate, can record more accurately actual road surface dynamic stability and the rut degree of depth, effectively control the generation of pavement track, prolonging service life of pavement.

Claims (6)

1. a Multifunctional asphalt pavement durability tester, comprise controller (1), controller (1) is by computer control, the input end of controller (1) is connected with displacement transducer (18) with temperature sensor (17), it is characterized in that, the output terminal of controller (1) respectively with the heating unit (4) of constant temperature oven (3), air pressure-loading mechanism (20) is connected with variator (13), constant temperature oven (3) inside upper surface is provided with water pipe (14) and shower nozzle (15), constant temperature oven (3) bottom inner surface is equipped with cross slide way (5), on cross slide way (5), be equipped with slide plate frame (6), described slide plate frame (6) is by being connected with gear case (8) through the curved bar (7) of constant temperature oven (3) bottom, gear case (8) is connected with motor (9), slide plate frame (6) transversely guide rail (5) laterally slides and is used for placing sample to be tested, on constant temperature oven (3) bottom inner surface of cross slide way (5) one sides, be provided with support (10), the elevating mechanism (11) that can vertically move along support (10) is installed on support (10), elevating mechanism (11) is connected with air pressure-loading mechanism (20), air pressure-loading mechanism (20) end is provided with experimental wheel (12), air pressure-loading mechanism (20) is used to experimental wheel (12) that load is provided, variator (13) is installed, for the rotating speed of Control experiment wheel (12) on experimental wheel (12),
Described temperature sensor (17) is arranged on the inwall of constant temperature oven (3), and described displacement transducer (18) is arranged on elevating mechanism (11).
2. Multifunctional asphalt pavement durability tester as claimed in claim 1, is characterized in that the top of elevating mechanism is provided with a crank, and for lifting experimental wheel (12), adjustable height scope is 5cm~35cm.
3. Multifunctional asphalt pavement durability tester as claimed in claim 1, is characterized in that, the described inner surperficial upper berth of constant temperature oven (3) is provided with one layer of heat preservation layer (16).
4. Multifunctional asphalt pavement durability tester as claimed in claim 1, is characterized in that, on the described outside bottom surface of constant temperature oven (3), Level tune support (19) is installed.
5. Multifunctional asphalt pavement durability tester as claimed in claim 1, is characterized in that, described temperature-control range is wide, precision is high, good stability, adopts PWM modulation system to carry out temperature PID control, guarantees that temperature is without overshoot.
6. Multifunctional asphalt pavement durability tester as claimed in claim 1, is characterized in that, controller adopts panasonic PLC controller.
CN201320664687.XU 2013-10-25 2013-10-25 Multifunctional asphalt pavement durability tester CN203595634U (en)

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Application Number Priority Date Filing Date Title
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104101552A (en) * 2014-07-09 2014-10-15 南京信息工程大学 Accelerated loading abrasion device for pavement
CN104634652A (en) * 2015-02-03 2015-05-20 北京市路兴公路新技术有限公司 Full-scale pavement heating system, full-scale pavement testing machine and full-scale pavement heating method
CN104931365A (en) * 2015-06-09 2015-09-23 长安大学 Device for detecting damage of road surface under action of torsional friction and detection method of the device
CN105241749A (en) * 2015-11-10 2016-01-13 昆山市交通工程试验检测中心 Improved asphalt mixture wheel tracking test device
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
CN106248574A (en) * 2016-07-25 2016-12-21 哈尔滨工业大学 A kind of Portable type ice Bituminous Pavement cohesive force sensing equipment and method
CN107328667A (en) * 2017-06-23 2017-11-07 长安大学 A kind of environmental cabinet of load environment coupling
CN107478802A (en) * 2017-06-23 2017-12-15 长安大学 A kind of pavement structure mechanical behavior experimental rig and test method
CN107560962A (en) * 2017-09-22 2018-01-09 广东省长大公路工程有限公司 Cast asphalt is mated formation with epoxy resin waterproof layer thermal load test apparatus and method
CN107607429A (en) * 2017-09-11 2018-01-19 南京林业大学 The performance test methods and asphalt content of crushed stone sealing determine method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104101552A (en) * 2014-07-09 2014-10-15 南京信息工程大学 Accelerated loading abrasion device for pavement
CN104634652A (en) * 2015-02-03 2015-05-20 北京市路兴公路新技术有限公司 Full-scale pavement heating system, full-scale pavement testing machine and full-scale pavement heating method
CN104634652B (en) * 2015-02-03 2017-08-08 北京市路兴公路新技术有限公司 A kind of full size road-surface heating system, full size pavement test machine and full size road-surface heating method
CN104931365A (en) * 2015-06-09 2015-09-23 长安大学 Device for detecting damage of road surface under action of torsional friction and detection method of the device
CN105241749A (en) * 2015-11-10 2016-01-13 昆山市交通工程试验检测中心 Improved asphalt mixture wheel tracking test device
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
CN106248574A (en) * 2016-07-25 2016-12-21 哈尔滨工业大学 A kind of Portable type ice Bituminous Pavement cohesive force sensing equipment and method
CN107328667A (en) * 2017-06-23 2017-11-07 长安大学 A kind of environmental cabinet of load environment coupling
CN107478802A (en) * 2017-06-23 2017-12-15 长安大学 A kind of pavement structure mechanical behavior experimental rig and test method
CN107607429A (en) * 2017-09-11 2018-01-19 南京林业大学 The performance test methods and asphalt content of crushed stone sealing determine method
CN107560962A (en) * 2017-09-22 2018-01-09 广东省长大公路工程有限公司 Cast asphalt is mated formation with epoxy resin waterproof layer thermal load test apparatus and method

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140514

Termination date: 20181025

CF01 Termination of patent right due to non-payment of annual fee