CN207717552U - A kind of Multifunctional asphalt pavement track experiment instrument - Google Patents
A kind of Multifunctional asphalt pavement track experiment instrument Download PDFInfo
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- CN207717552U CN207717552U CN201820026893.0U CN201820026893U CN207717552U CN 207717552 U CN207717552 U CN 207717552U CN 201820026893 U CN201820026893 U CN 201820026893U CN 207717552 U CN207717552 U CN 207717552U
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- Prior art keywords
- wheel
- asphalt pavement
- motor
- bath case
- experiment instrument
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Abstract
The utility model discloses a kind of Multifunctional asphalt pavement track experiment instruments, electric sand-bath case including temperature can be adjusted, the charging tray for holding pitch is provided in electric sand-bath case, it is equipped with wheel in charging tray, the montant for placing weights is connected on wheel, perpendicular connecting lever is connected on montant, it further include fixed frame, dc motor is provided on fixed frame, the output end of dc motor is connect with connecting lever, further include can before and after measurement experiment the vertical displacement of weights offset table.The utility model has very real meaning in Research on Bituminous Pavement field, and the experimental provision has good cost performance, and good economic benefit can be obtained by coming into operation.
Description
Technical field
The utility model belongs to rut test technical field, and in particular to a kind of Multifunctional asphalt pavement track experiment instrument.
Background technology
Track is one of main failure mode of bituminous paving.The increasing carried with the increase of traffic volume of highway, automobile shafts
And the formation of canalized traffic, the track problem of highway in China bituminous paving are more and more prominent.Asphalt pavement rut tester energy
The factor that bituminous paving generates the mechanism of track and influences track is studied in detail；And to influencing each of asphalt pavement rut
Kind index is compared
Indoor wheel tracking test has become the evaluation most common experiment of rutting-resistant performance of mixture, the advantage is that：Apply
Load mode reflect the actual loading situation on road surface, and instrument is relatively cheap, easily operated.Indoor wheel tracking test institute
The device needed is Measuring Device, and loading wheel rolls sample under the conditions of certain temperature with certain load, speed, makes sample repeatedly
Under the Repeated Loading of wheel, generates densification, shearing, passage and flowing and rolled to generate track by continuously monitoring
The development of track in the process obtains the deformation of 45min and 60min, dynamic stability DS is calculated by regulation formula, to evaluate pitch
The rutting resistance of mixture.Test sample can be the plate test specimen that laboratory rolling compacting machine makes, and can also be road surface
The cylindrical specimens for a diameter of 200mm that drill core obtains.The loading wheel of current domestic Measuring Device all uses made of rubber mostly
Solid tyre, diameter 200mm, it is 42 times/min to take turns width 50mm, rubber thickness 15mm and round-trip travel speed, specifically there is crank company
Bar driving experiment wheel and chain driving experiment 2 kinds of modes of wheel.
But the load of all kinds of Measuring Devices all follows a basic principle：The effect of practical carload is simulated as possible, thus it is each
The loading wheel of class Measuring Device and the footprint pressure of test specimen are all controlled in 0.6Mpa~0.9Mpa, this pressure represents practical road surface
The ground connection pressure of one tire of upper single shaft two-wheel truck, they can all distinguish the quality of asphalt mixture anti-rutting performance, and
And it is mostly preferable with the correlativity of live track performance.Nevertheless, current Measuring Device still has shortcoming, experiment wheel is still
There are all various aspects to need to improve, such as the adjustability of wheels travel speed, adjustability, the climatic environment of load and wheel load size
Simulation (can realize at present simple dry and wet condition simulate) etc..Moreover, both at home and abroad generally acknowledged track be mainly it is shear-deformable and
Compaction deformation, China at present used in Measuring Device, from force modes, test specimen is born main during the test
It is compression, corresponding deformation is mainly compaction deformation, this is because experiment wheel is driven by crank connecting link, is only capable of simulating vehicle
Non-driving wheel, and during vehicle actual travel, the shear action bigger of driving wheel road pavement.
Utility model content
The utility model provides a kind of Multifunctional asphalt pavement track experiment instrument, to solve problem of the prior art, this
Utility model has very real meaning in Research on Bituminous Pavement field, and the experimental provision has good cost performance, input
Using good economic benefit can be obtained.
In order to achieve the above objectives, the utility model adopts the following technical solution：
A kind of Multifunctional asphalt pavement track experiment instrument, including the electric sand-bath case of temperature can be adjusted, it is set in electric sand-bath case
It is equipped with the charging tray for holding pitch, wheel is equipped in charging tray, the montant for placing weights, montant are connected on wheel
On be connected with perpendicular connecting lever, further include fixed frame, dc motor, the output of dc motor be provided on fixed frame
End is connect with connecting lever, further include can before and after measurement experiment the vertical displacement of weights offset table.
Further, the contiuously variable transmission for controlling DC motor rotation speed is additionally provided on fixed frame.
Further, the offset table is mounted on by holder on electric sand-bath case, and the measurement head of offset table is located at counterweight
On counterweight.
Further, the offset table is displacement dial gauge.
Further, connecting lever is equipped with the bar shaped link slot that can adjust vehicle wheel rotation radius, the output of dc motor
End is connect with bar shaped link slot.
Further, thermometer is equipped in electric sand-bath case.
Compared with prior art, the utility model has technique effect beneficial below：
The utility model can be directed to a variety of factors for influencing asphalt pavement rut and be studied, and bituminous concrete is contained in
Can measure has in the charging tray of lateral spacing, for measuring the influence that lateral spacing destroys bituminous paving.It can be analyzed using sand-bath heating
The destruction situation of road surface at different temperatures.The speed of wheel can measure friction speed road surface by controlling dc motor
The influence of destruction.And wheel load can be controlled by adding counterweight on montant, the influence for studying the destruction of wheel load road pavement.
Therefore Multifunctional asphalt pavement track tester has very real meaning in Research on Bituminous Pavement field, and the experimental provision has
There is good cost performance, good economic benefit can be obtained by coming into operation.
Further, using high-precision displacement dial gauge, it is ensured that micro-displacement measurement precision.
Further, pass through the output end and bar shaped link slot link position of adjusting dc motor, you can adjust wheel
The radius of gyration obtains the data moved under different radii.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model.
Wherein, 1- fixed frames；2- contiuously variable transmissions；3- dc motors；4- connecting levers；5- thermometers；6- offset tables；7- matches
Weight counterweight；8- wheels；9- charging trays；10- electricity sand-bath casees.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, a kind of Multifunctional asphalt pavement track experiment instrument, including the electric sand-bath case 10 of temperature can be adjusted, electricity
It is equipped with thermometer 5 in sand-bath case 10, the charging tray 9 for holding asphalt is additionally provided in electric sand-bath case 10, is set in charging tray 9
There is wheel 8, the montant for placing weights 7 is connected on wheel 8, perpendicular connecting lever 4 is connected on montant, is also wrapped
Fixed frame 1 is included, dc motor 3 is provided on fixed frame 1, the output end of dc motor 3 connect with connecting lever 4, set on connecting lever 4
The bar shaped link slot of vehicle wheel rotation radius can be adjusted by having, and the output end of dc motor 3 is connect with bar shaped link slot, fixed frame
The contiuously variable transmission 2 for controlling 3 rotating speed of dc motor is additionally provided on 1, further including being capable of weights 7 before and after measurement experiment
Vertical displacement offset table 6, the offset table 6 is mounted on by holder on electric sand-bath case 10, and the measurement head position of offset table 6
In on weights 7, and offset table 6 is displacement dial gauge.
The utility model is described in detail with reference to embodiment：
The utility model makes a fixed frame 1 and is used for fixing dc motor 3, and charging tray 9 is used for holding asphalt,
And can measure has lateral spacing and the wheel tracking test without lateral spacing road surface.Charging tray 9, which is placed in electric sand-bath case 10, to be used for controlling asphalt road
A connecting lever 4 connected vertically and a montant is arranged in the temperature in face, and for connecting dc motor 3, montant is used for connecting lever 4
Fixing vehicle wheel 8 and weights 7.
The utility model with lower part mainly by being realized：The first, power-control section：Brushless direct current motor passes through nothing
Grade speed changer 2 come change input motor electric current to control the rotating speed of motor itself；The second, temprature control unit：Pitch is mixed
It closes material to be contained in charging tray 9, then charging tray 9 is placed in adjustable electric sand-bath case 10.By the voltage for adjusting electric sand-bath case 10
Whole heating, cooling and heat preservation can be carried out to charging tray 9 and sand；Third, determining displacement part：The pedestal of offset table 6 passes through
Electromagnetic relay is fixed on the shell of electric sand-bath case 10, and gauge outfit is positioned on 7 surface of weights loaded, passes through position
The change in displacement value of bituminous paving can be determined by moving the rotation of list index；4th, vehicle wheel presses control section：Using laboratory
Standard test weight, according to experiment calculation data, the weight on the i.e. controllable wheel of number by increasing or reducing counterweight is used for
Do different wheel pressure pavement destruction experiments；5th, vehicle wheel rotational speed control section：Pass through 3 output end of dc motor and connecting lever
Link position, you can control the speed of wheel, be used as pavement destruction under different speeds and test.
Wherein, major parameter setting is as follows：
1, the wheel speed of travel：42 times/min ± 1 time/min
2, test wheel move distance：230±10mm
3, the rubber hardness (international standard hardness) of muller：When 78 ± 2 (60 DEG C), the footprint pressure of muller and die trial：0.7
±0.05Mpa
4, the measurement range of displacement：0~30mm
5, the measurement accuracy of displacement：Less than 0.01mm
6, the test period of track：20---300min (arbitrary adjustable)
7, the control range (can arbitrarily set) of electric sand-bath case：Room temperature~80 DEG C, control accuracy ± 0.3 DEG C
8, dc motor：92BL(24V)
The asphalt pavement rut tester of the utility model is mainly used for the survey of the high temperature rutting resistance of asphalt
It is fixed, it can also be used to the complementary inspection of asphalt proportion design.The utility model Multifunctional asphalt pavement track tester
A variety of factors for influencing asphalt pavement rut can be directed to be studied.The characteristics of instrument：The first, it is set using common experiment
Standby, tester is easy to operate, cost-effective；The second, using electric sand-bath case 10 simulation pitch state at different temperatures and make
It keeps required temperature during the experiment；Temperature control is controlled using adjustable electric sand-bath case 10, and temperature stability is high, really
It protects without overshoot；Third, using high-precision displacement dial gauge, it is ensured that micro-displacement measurement precision；4th, by adjusting direct current
3 output end of motivation can be realized easily with the weights 7 on the link position of bar shaped link slot on connecting lever and increase wheel
The influence that difference wheel pressure road pavement is destroyed；5th, asphalt is held using charging tray 9, so that it may with measure have lateral spacing and
Wheel tracking test without lateral spacing road surface；6th, the speed of wheel 8 can measure friction speed by controlling the electric current of direct current generator
The influence that road pavement is destroyed；The asphalt pavement rut tester of the utility model is easy to operate and easy to use, and cost is relatively low,
Cost performance is very high, can occupy market well, and the laboratory especially suitable for ordinary higher learning school applies and therefrom obtains good warp
Ji benefit.
In use, wheel 8 is connect with montant, and weights 7 are installed on montant, adjust the position of charging tray 9, make vehicle
Wheel 8 is in 9 precalculated position of charging tray, and offset table 6 is installed on electric 10 suitable position of sand-bath case, 6 measurement head of offset table is made to be positioned at
At weights 7；And thermometer 5 is placed in suitable position in electric sand-bath case 10, it reads offset table 6 and reads, and remove offset table
6, electric 10 power supply of sand-bath case is connected, electric sand-bath case 10 is adjusted to assigned temperature, connects 3 power supply of dc motor, adjust stepless change
Fast device 2 is tested to specified rotating speed, disconnects 3 power supply of dc motor after the test, and installation offset table 6 reads counterweight weight
7 positions of code, record experimental data, change experimental variable (counterweight counterweight, sandbox temperature, motor speed) and carry out repeating to test reading
Experimental data is taken, instrument power source is disconnected, arranges laboratory apparatus；Analysis of experimental data processing is carried out, experimental summary is carried out, passes through note
The asphalt rutting depth of record and time and the data of rolling number, obtain dynamic stability, obtain experiment pitch used
Offset table and thermometer after experiment, are unloaded and are placed first, be then shut off power supply, displacement by the stability of mixture
Table should carry out primary calibration again according to service condition or 1 year.
Claims (6)
1. a kind of Multifunctional asphalt pavement track experiment instrument, which is characterized in that the electric sand-bath case (10) including temperature can be adjusted,
It is provided with the charging tray (9) for holding asphalt in electric sand-bath case (10), wheel (8), wheel (8) are equipped in charging tray (9)
On be connected with montant for placing weights (7), be connected with perpendicular connecting lever (4) on montant, further include fixed frame
(1), dc motor (3) is provided on fixed frame (1), the output end of dc motor (3) is connect with connecting lever (4), further includes
Can before and after measurement experiment the vertical displacement of weights (7) offset table (6).
2. a kind of Multifunctional asphalt pavement track experiment instrument according to claim 1, which is characterized in that on fixed frame (1)
It is additionally provided with the contiuously variable transmission (2) for controlling dc motor (3) rotating speed.
3. a kind of Multifunctional asphalt pavement track experiment instrument according to claim 1, which is characterized in that the offset table
(6) it is mounted on electric sand-bath case (10) by holder, and the measurement head of offset table (6) is located on weights (7).
4. a kind of Multifunctional asphalt pavement track experiment instrument according to claim 1, which is characterized in that the offset table
(6) it is displacement dial gauge.
5. a kind of Multifunctional asphalt pavement track experiment instrument according to claim 1, which is characterized in that connecting lever is set on (4)
The bar shaped link slot of vehicle wheel rotation radius can be adjusted by having, and the output end of dc motor (3) is connect with bar shaped link slot.
6. a kind of Multifunctional asphalt pavement track experiment instrument according to claim 1, which is characterized in that electric sand-bath case (10)
In be equipped with thermometer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820026893.0U CN207717552U (en) | 2018-01-08 | 2018-01-08 | A kind of Multifunctional asphalt pavement track experiment instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820026893.0U CN207717552U (en) | 2018-01-08 | 2018-01-08 | A kind of Multifunctional asphalt pavement track experiment instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207717552U true CN207717552U (en) | 2018-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820026893.0U Expired - Fee Related CN207717552U (en) | 2018-01-08 | 2018-01-08 | A kind of Multifunctional asphalt pavement track experiment instrument |
Country Status (1)
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| CN (1) | CN207717552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044748A (en) * | 2019-04-11 | 2019-07-23 | 吉林大学 | It is a kind of for simulating the experimental rig and its test method of asphalt pavement rut forming process |
-
2018
- 2018-01-08 CN CN201820026893.0U patent/CN207717552U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044748A (en) * | 2019-04-11 | 2019-07-23 | 吉林大学 | It is a kind of for simulating the experimental rig and its test method of asphalt pavement rut forming process |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180810 Termination date: 20190108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |