CN108508190A - A kind of vehicle tracking test instrument under simulation braking state - Google Patents
A kind of vehicle tracking test instrument under simulation braking state Download PDFInfo
- Publication number
- CN108508190A CN108508190A CN201810347678.5A CN201810347678A CN108508190A CN 108508190 A CN108508190 A CN 108508190A CN 201810347678 A CN201810347678 A CN 201810347678A CN 108508190 A CN108508190 A CN 108508190A
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- braking state
- vehicle tracking
- test instrument
- tracking test
- instrument under
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- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 238000004088 simulation Methods 0.000 title claims abstract description 22
- 238000002474 experimental method Methods 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 239000010426 asphalt Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 230000036962 time dependent Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/42—Road-making materials
Abstract
The invention discloses the vehicle tracking test instruments under a kind of simulation braking state, include the horizontal bed of adjustable length；The experiment wheel of included brake system；Transmission motor system；It is oriented to driven wheel system；Direction of traffic can be guided and adjust the guiding crossbeam of height by stand-by motor；The simulated rainfall circulatory system；Temperature control system.Structure of the invention reasonable design, install compact and manipulation is simple, using effect is good, it can simulating vehicle braking state lower stress situation when driving, the lower track plate stressing conditions of variable time dependent loading effect can be simulated simultaneously, it is existing when can effectively solve existing Measuring Device using crank connecting link driving experiment wheel walking to simulate the practical problem for bearing the plate stress of the track under vertical force state, reliable tool is provided for the detection of bitumen mixture specimen high-temperature behavior, the tool that can be used as indoor scientific research uses.
Description
Technical field
The invention belongs to road engineering technical field of test equipment more particularly to a kind of stability at high temperature of asphalt mixture to survey
Try equipment.
Background technology
Track is that continuing load causes asphalt to generate under traffic loading or hot conditions again for a kind of bituminous paving
Plastic flow deformation eventually leads to a kind of common pavement destruction form that skeleton structure destroys unstability.Wheel tracking test is evaluation
Wheel tracking test is included in the existing specification in China, the advantage is that by the simple and easy method of stability at high temperature of asphalt mixture at present：
The load mode of application reflects the actual loading situation on road surface, and instrument is relatively cheap, easily operated.But existing track
For instrument there are still shortcoming, instrument has all various aspects that can improve it.
The formation of track is mainly caused due to shear-deformable, track disease frequently local in vehicle brake
The possibility of generation can also increase, such as in parking lot, station, intersection, charge station and other congested in traffic, vehicle rows
Sail slow place.
The main purpose of existing vehicle tracking test instrument has the following problems exactly in order to measure high-temperature stability：1)
The mainly compression that test specimen is born during the test, corresponding deformation are mainly compaction deformation；2) test specimen is in test process
In the power born be that alternate load to occur inconsistent for vehicle traveling in fixation pressure, with real process；3) vehicle wheel rotation generates
Horizontal tangential power, mainly due to the frictional resistance between tire and road surface caused by, generated in brake process with actual vehicle
Horizontal tangential power is not inconsistent；4) the testing equipment scope of application is insufficient at present, cannot meet a tractor serves several purposes, economical deficiency.Above not
Foot causes not conforming to the actual conditions for the experimental test result, causes the high-temperature stability set in design process too low.
Existing patent mainly mainly solves on the basis of existing equipment：1) changing existing equipment can only simulating vehicle
The state of driven wheel walking, realizes the true walking states of analog-driven wheel；2) simulated environment temperature, dynamic water such as wash away at the environment
Influence of the factor to track；3) by adding hydraulic system, loading stress is adjusted.
Above-mentioned patent is disadvantageous in that：The generated horizontal shear force in experiment wheel rolling process during experiment
Horizontal shear force caused by wheel when braking under actual state can not be simulated.The loading force of the equipment cannot achieve variable simultaneously
Road surface stressing conditions are not inconsistent in load, with real process.
Invention content
Structure of the invention reasonable design, install compact and manipulation is simple, using effect is good, can simulating vehicle brake when driving
State lower stress situation, while the lower track plate stressing conditions of variable load effect can be simulated, it can effectively solve existing Measuring Device
It is existing when driving experiment wheel to walk using crank connecting link to simulate the reality for bearing the plate stress of the track under vertical force state
Problem provides reliable tool for the detection of bitumen mixture specimen high-temperature behavior, and can be used as the tool of indoor scientific research makes
With.
In order to solve the above technical problems, patent of the present invention uses following technical scheme：The horizontal bed of adjustable length；
The experiment wheel of included brake system；Transmission motor system；It is oriented to driven wheel system；Direction of traffic can be guided and pass through electricity
Machine adjusts the guiding crossbeam of height；The simulated rainfall circulatory system；Temperature control system.
Vehicle tracking test instrument under the simulation braking state, it is characterised in that；The experiment master control measurement system is located at examination
It tests outside instrument, is controlled by computer, using sensor, by data line transfer data to testing measurement system.
Vehicle tracking test instrument under the simulation braking state, it is characterised in that：The temperature control system is located inside chamber.
Vehicle tracking test instrument under the simulation braking state, it is characterised in that：The holder device includes testing stand, guide rail
And wheel carrier.
Vehicle tracking test instrument under the simulation braking state, it is characterised in that：The test bench location is in instrument bottom, by liquid
Depressor, test platform with sliding passage board group at；Wherein left slide passage plate is connect with hydraulic press.
Vehicle tracking test instrument under the simulation braking state, it is characterised in that：The guide rail is located at insulating box inside top,
Both ends are inserted into constant temperature chamber interior wall simultaneously.
Vehicle tracking test instrument under the simulation braking state, it is characterised in that：The wheel carrier passes through driven wheel and guide rail
It is connected；The driving device includes driving motor and driving belt.
The Wheels group arrangement is placed on wheel carrier by the experiment wheel of built-in brake system and forms；The pressure apparatus is located at
Wheels group arrangement structure upper.
The rain cycle system is made of nozzle, water pipe, precipitation recovery system and hydraulic pressure system；The nozzle is in constant temperature
Box top is located at guide rail to beam both ends.
Patent of the present invention compared with prior art have it is following a little：
1, experiment wheel is during traveling, when advance certain displacement, is tested and is taken turns by brake system brakes, simulation is practical
Crossing road surface receives the Rutting damage under braking action.It, being capable of dummy level by brake system brakes wheel in rotation process
Tangential force causes road surface that track occurs.
2, it by dynamic regulation load pressure, realizes and simulates practical road surface stressing conditions.
3, patent of the present invention is other than innovative testing program, moreover it is possible to complete conventional wheel tracking test, can a tractor serves several purposes,
Save testing equipment expense.
4, the stressing conditions on road surface under different load actions can be simulated by the rotation of crossbeam stand-by motor.
Description of the drawings
Fig. 1 is the structural schematic diagram of the vehicle tracking test instrument under present invention simulation braking state.
Fig. 2 is the left view that the vehicle tracking test instrument under braking state is simulated in Fig. 1.
Fig. 3 is Fig. 1 middle cross beam height control system detail views.
In Fig. 1：1. master control system, 2. insulating boxs, 3. worm screws, 4. stand-by motors, 5. sliding passage plates, 6. control slide plate liquid
Pressure system, 7. nozzles, 8. driven wheels, 9. electric systems, 10. driving belts, 11. experiment wheels, 12. bearing plates that can be sluiced, 13.
Water pipe, 14. guide rails, 15. displacement sensors, 16. brake systems, 17. wheel carriers, 18. drum brakes systems, 19. experiments
Test specimen, 20. cycle rainfall systems, 21. temperature control systems.
Specific implementation mode
One, the basic structure of the vehicle tracking test instrument under braking state is simulated
As shown in Figure 1, the present invention simulates the vehicle tracking test instrument under braking state, include the experiment master by data line transfer
Control measurement system；Holder device；Driving device；Wheels group arrangement；Pressure apparatus；Simulated rainfall circulator；Temperature control system.
It tests master control measurement system 1 to be located at outside test apparatus, is controlled by computer, using sensor, passed by data line
Transmission of data is to testing measurement system.Temperature control system is located inside chamber.
Holder device includes testing stand 12, guide rail 14 and wheel carrier 17.Test bench location is in instrument bottom, by hydraulic press, examination
Test platform with sliding passage board group at；Wherein left slide passage plate is connect with hydraulic press.Guide rail is located at insulating box inside top,
Both ends are inserted into constant temperature chamber interior wall simultaneously.Wheel carrier is connected by driven wheel with guide rail.
Driving device includes driving motor and driving belt.Wheels group arrangement by built-in brake system 16 experiment wheel
11 are placed on wheel carrier composition.Pressure apparatus is located at Wheels group arrangement structure upper.
Rain cycle system is made of nozzle 7, water pipe 13, precipitation recovery system and hydraulic pressure system；The nozzle is in constant temperature
Box top is located at guide rail to beam both ends.
Two, the application method of the vehicle tracking test instrument under braking state is simulated
(1) sliding passage plate 5 is adjusted, asphalt track plate is placed, it is made to be fixed on the bearing plate 12 that can be sluiced
On；
(2) required test temperature is selected by the temperature control system in master control system 1 according to experiment needs；
(3) according to experiment demand, by the rainfall simulation system in master control system 1, whether selection opens rainfall simulation, profit
With cycle rainfall system, rainwater is drop to by nozzle 7 on track plate, the rainwater fallen by the bearing plate 12 that can sluice into
Enter return water pipe and is discharged into rainfall simulation system；
(4) by track plate 19 under constant temperature, after being placed on the stipulated time, stand-by motor 4 is hereafter opened so that worm screw
3 move down, and drive guide rail 14 to move down, so that the experiment wheel 11 on Wheels group arrangement is pressed on track plate, pass through
Line pressure shift sensor 15 shows pressure needed for experiment in master control system 1.
(5) by master control system 1, electric system 9 is opened, by the turn of motor, drives driving belt 10, last band
Dynamic test wheel 11 is walked.When 11 advance certain displacement is taken turns in experiment, by 16 retardation test wheel of brake system, simulation is practical
In the case of braking state.
(6) after the completion of 11 braking of experiment wheel, wheel 11 repercussions rotation is tested in the reversion of 1 automatic driving motor of master control system, complete
The step of at aforementioned (5), repeatedly, experiment wheel 11 in moving horizontally repeatedly, until master control system 1 is sensed by line pressure shift for cycle
The measurement of device 15 reaches test determination state.
Three, the technical advantage of the vehicle tracking test instrument under braking state is simulated
(1) track under braking state, more closing to reality road surface stressing conditions can be simulated, related researcher can be given
More effective data are provided.
(2) by rainfall system and temperature control system, the road surface stressing conditions under varying environment state can be simulated, simulation is real
Border environment.
(3) this practicability type patent is other than innovative testing program, moreover it is possible to conventional wheel tracking test is completed, it being capable of a machine
It is multi-purpose, save testing equipment expense.
Claims (9)
1. simulating the vehicle tracking test instrument under braking state, it is characterised in that：Include being measured by the experiment master control of data line transfer
System, holder device, driving device, Wheels group arrangement, pressure apparatus, simulated rainfall circulator, temperature control system.
2. the vehicle tracking test instrument under simulation braking state according to claim 1, it is characterised in that：The experiment master control is surveyed
Determine system to be located at outside test apparatus, be controlled by computer, using sensor, system is measured by data line transfer data to experiment
System.
3. temperature control system according to claim 1, feature exist：The temperature control system is located inside chamber.
4. the vehicle tracking test instrument under simulation braking state according to claim 1, it is characterised in that：The holder device packet
Include testing stand, guide rail and wheel carrier.
5. the vehicle tracking test instrument under simulation braking state according to claim 1 or 3, it is characterised in that：The testing stand
Positioned at instrument bottom, by hydraulic press, test platform and sliding passage board group at；Wherein left slide passage plate connects with hydraulic press
It connects.
6. the vehicle tracking test instrument under simulation braking state according to claim 1 or 3, it is characterised in that：The guide rail position
In insulating box inside top, while both ends are inserted into constant temperature chamber interior wall.
7. the vehicle tracking test instrument under simulation braking state according to claim 1 or 3, it is characterised in that：The wheel carrier
It is connected with guide rail by driven wheel；The driving device includes driving motor and driving belt.
8. the vehicle tracking test instrument under simulation braking state according to claim 1, it is characterised in that：The Wheels group arrangement by
The experiment wheel of built-in brake system is placed on wheel carrier composition；The pressure apparatus is located at Wheels group arrangement structure upper.
9. the simulated rainfall circulatory system according to claim 1, it is characterised in that：The rain cycle system by nozzle,
Water pipe, precipitation recovery system and hydraulic pressure system composition；The nozzle is located at guide rail to beam both ends at the top of insulating box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810347678.5A CN108508190A (en) | 2018-04-18 | 2018-04-18 | A kind of vehicle tracking test instrument under simulation braking state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810347678.5A CN108508190A (en) | 2018-04-18 | 2018-04-18 | A kind of vehicle tracking test instrument under simulation braking state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108508190A true CN108508190A (en) | 2018-09-07 |
Family
ID=63382769
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810347678.5A Pending CN108508190A (en) | 2018-04-18 | 2018-04-18 | A kind of vehicle tracking test instrument under simulation braking state |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110658087A (en) * | 2019-10-18 | 2020-01-07 | 温州大学 | Piezoelectric road test device under simulation traffic load effect |
| CN110702590A (en) * | 2019-08-15 | 2020-01-17 | 长沙理工大学 | Indoor wearing and tearing device that accelerates of bituminous mixture |
| CN112881217A (en) * | 2021-01-19 | 2021-06-01 | 东南大学 | Improved asphalt mixture rutting experimental device and experimental method |
| CN113588542A (en) * | 2021-07-30 | 2021-11-02 | 哈尔滨工业大学 | Constant-speed rotation and anti-lock controller for wheel type high-speed anti-skid instrument |
| CN113820269A (en) * | 2021-09-29 | 2021-12-21 | 武汉理工大学 | Road surface function rapid tester |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702590A (en) * | 2019-08-15 | 2020-01-17 | 长沙理工大学 | Indoor wearing and tearing device that accelerates of bituminous mixture |
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| CN112881217A (en) * | 2021-01-19 | 2021-06-01 | 东南大学 | Improved asphalt mixture rutting experimental device and experimental method |
| CN113588542A (en) * | 2021-07-30 | 2021-11-02 | 哈尔滨工业大学 | Constant-speed rotation and anti-lock controller for wheel type high-speed anti-skid instrument |
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Application publication date: 20180907 |