CN105651858B - A kind of simulated automotive traveling is in micro-surface area road rumble indoor test device and method - Google Patents
A kind of simulated automotive traveling is in micro-surface area road rumble indoor test device and method Download PDFInfo
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- CN105651858B CN105651858B CN201511018397.8A CN201511018397A CN105651858B CN 105651858 B CN105651858 B CN 105651858B CN 201511018397 A CN201511018397 A CN 201511018397A CN 105651858 B CN105651858 B CN 105651858B
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- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
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Abstract
For a kind of simulated automotive traveling in micro-surface area road rumble indoor test device and method, it is related to a kind of test device and method, and in particular to a kind of simulated automotive traveling is in micro-surface area road rumble indoor test device and method.The present invention has certain influence to solve the problem of to survey the factor not easy to control such as wind speed, background noise, vehicle flowrate when noise needs to consume a large amount of manpower and materials and test noise outside the room of micro-surface area road surface on measurement structure.The present invention includes pedestal, endless track, experiment wheel, horizontal axis, vertical pivot, drive shaft, lifting vertical pivot knob, driven gear, driving gear, hinged column base and engine, endless track is mounted on the upper surface of pedestal, engine is mounted in pedestal, the lower end of drive shaft is mounted on the middle part of pedestal inner bottom surface by hinged column base, and driven gear is set on the driving shaft.The present invention is for testing micro-surface area road rumble.
Description
Technical field
The present invention relates to a kind of test device and methods, and in particular to a kind of simulated automotive traveling is in micro-surface area road rumble
Indoor test device and method, belongs to traffic and transport field.
Background technology
Micro-surface area has the function of good waterproof, antiskid, wear-resisting and filling track, can significantly improve the use on road surface
Performance, and the feature that its short construction period, open to traffic are fast have larger advantage compared with other maintenance of surface technologies.It can
It is in micro zooming during wideling popularize and be widely used, it has been found that vehicle traveling is overlaying the road surface for having micro-surface area
When upper, either internal car noise or pass-by noise are all apparently higher than asphalt concrete road surface, not only affect and drive people
Surrounding enviroment are also caused a degree of noise pollution, to constrain the hair of micro zooming by the road-ability of member
Exhibition, therefore rational micro-surface area noise rating method is established with important practical significance.
Currently, the main method of domestic road pavement noise reduction evaluation is the road that live making is designed by indoor theory
Then face at the scene surveys practical road surface into Row noise.The advantages of this method is that the data obtained is accurate and reliable, is practical true
It is the data of acquisition.However, live surfacing needs rational test site, substantial contribution and corresponding mating professional construction
Mechanical and a considerable amount of technical staff.Situ measurements are mainly by wind speed, wind direction, temperature, background noise, road surface simultaneously
Service life, the factor not easy to control such as the vehicle, the vehicle flowrate that mainly travel on road surface restriction, be unfavorable between different road surfaces
The comparison of noise reduction.
Consider that the factors such as experimental condition and feasibility, contrived experiment scheme carry out noise to micro-surfacing mixture indoors and comment
Valence is for the comparison of noise reduction and grinding for low noise micro-surfacing mixture between the application of micro-surfacing mixture, different road surface
Hair has great importance.
Invention content
The present invention is to solve survey noise outside the room of micro-surface area road surface to need to consume a large amount of manpower and materials, and wind when test noise
The factor not easy to control such as speed, background noise, vehicle flowrate has certain the problem of influencing to measurement structure, and then proposes a kind of simulation
Running car is in micro-surface area road rumble indoor test device and method.
The present invention adopts the technical scheme that in order to solve the above problem：Test device of the present invention includes pedestal, annular
Runway, experiment wheel, horizontal axis, vertical pivot, drive shaft, lifting vertical pivot knob, driven gear, driving gear, hinged column base and engine,
Endless track is mounted on the upper surface of pedestal, and engine is mounted in pedestal, and the lower end of drive shaft is installed by hinged column base
At the middle part of pedestal inner bottom surface, driven gear is set on the driving shaft, and driving gear is sleeved in the rotation axis of engine, actively
Gear is engaged with driven gear, and the lower end of vertical pivot is connected by lifting the upper end of vertical pivot knob and drive shaft, one end of horizontal axis with
Vertical pivot connects, and with experiment wheel connection, the wheel rim for testing wheel contacts the other end of horizontal axis with the upper surface of endless track.
Test method of the present invention is as follows：
Step 1: assembling testing equipment：The micro-surfacing mixture being uniformly mixed is poured into eight experiment moulds and fast
Speed strikes off, and is cooled to room temperature, and eight experiment moulds are embedded in the corresponding groove of base upper surface；
Step 2: making the wheel rim of experiment wheel just touch micro-surface area runway mounted on the other end of horizontal axis on experiment wheel
On；
Step 3: sound level meter is mounted on the upper surface of partition board；
Step 4: by sound insulation cover buckle on endless track, and so that sound insulation lid is passed through screw thread with pedestal and closely connect；
Step 5: gathered data：
Step 5 (one) starts engine, simulates real road travel speed, measures experiment wheel speed respectively and reaches
Noise when 20km/h, 40km/h, 60km/h, 80km/h, the traveling radius for testing wheel is 0.5m, is computed that vertical pivot can be obtained is logical
It is respectively 212r/min, 424r/min, 637r/min, 849r/min that horizontal axis, which is crossed, with the angular speed that dynamic test wheel should reach；
The maximum sound level of sent out noise is taken turns in experiment when step 5 (two), record rotate at various speeds.
The beneficial effects of the invention are as follows：1, experimental condition of the invention is controllable, can avoid other vehicles, people when the measurement of outdoor
For the influence of noise measurement result that equal outside environmental elements are sent out, the indoor quiet closed laboratory measurement noise of selection is accurate；
2, micro-surface area material needed for present invention experiment is controllable, and many situations need the micro-surface area road rumble for comparing different gradation to influence,
Outdoor survey, which is made an uproar, needs to expend the test of lot of materials, manpower and materials laying section progress noise, and the present invention passes through interior in a small amount
The mix of mixture and mat formation and can carry out the test of noise, economizes on resources；3, the present invention by different micro-surface area road surfaces it
Between noise reduction the their own influence of noise of comparative evaluation, there is great meaning to the research and development of low-noise micro-surfacing mixture
Justice；4, tire texture in the present invention, rate request, micro-surface area road surface are all that simulating actual conditions carry out, therefore noise testing knot
Fruit is not much different with actual noise situation, and error is small；5, existing micro-surface area noise must could be surveyed after the completion of construction
Amount, is the rear assessment to micro-surfacing mixture noise situations, can not be assessed noise level before it comes into operation, unfavorable
In the selection of micro-surfacing mixture grading.And the indoor micro-surface area noise testing method of the present invention is by making an uproar to different micro-surface areas
Sound test can evaluate the noise of micro-surface area before construction, be estimated.
Description of the drawings
Fig. 1 is the dimensional structure diagram of test device of the present invention, and Fig. 2 is the structural schematic diagram of sound insulation lid, and Fig. 3 is
The vertical view of test device of the present invention, Fig. 4 are the main sectional views of test device of the present invention.
Specific implementation mode
Specific implementation mode one：Illustrate present embodiment in conjunction with Fig. 1 to Fig. 4, a kind of simulated automotive described in present embodiment
Traveling includes pedestal 1, endless track 2, experiment wheel 3, horizontal axis 4, vertical pivot 5, driving in micro-surface area road rumble indoor test device
Axis 6, lifting vertical pivot knob 7, driven gear 8, driving gear 9, hinged column base 10 and engine 11, endless track 2 are mounted on bottom
On the upper surface of seat 1, engine 11 is mounted in pedestal 1, and the lower end of drive shaft 6 is mounted on by hinged column base 10 in pedestal 1
The middle part of bottom surface, driven gear 8 are sleeved in drive shaft 6, and driving gear 9 is sleeved in the rotation axis of engine 11, driving tooth
Wheel 9 is engaged with driven gear 8, and the lower end of vertical pivot 5 is connect by lifting vertical pivot knob 7 with the upper end of drive shaft 6, and the one of horizontal axis 4
End is connect with vertical pivot 5, and the other end of horizontal axis 4 is connect with experiment wheel 3, and the upper surface of the wheel rim and endless track 2 of experiment wheel 3 connects
It touches.
The design outer diameter of endless track 2 is 0.58m in present embodiment, if diameter is too big, manufactures the increasing of mold cost
Add, and Surface of Trial Pavement material requested of mating formation is more every time, meanwhile, diameter again cannot be too small, and same angular speed situation, radius is got over
Greatly, it can reach that linear velocity is bigger, the width of endless track 2 is 8cm, and the width of experiment wheel 3 is 3.2cm, a diameter of 8cm.
Engine 11 is arranged in pedestal 1 in present embodiment, and pedestal 1 increases pedestal quality with guarantee test process
In, entire experimental rig is not susceptible to shake, and the other vibration noises for effectivelying prevent apparatus working to bring.
The setting of 4 size of horizontal axis must satisfy the requirement of the allowable stress at it is with 5 rigid connection of vertical pivot in present embodiment,
Steps are as follows for specific calculating：
The material of horizontal axis 4 uses Q235 steel, allowable stress [σ]=160MPa, density p=7.85g/cm3, length l0For
0.5m, wheel mass is smaller to ignore, and wheels travel acceleration is not easy to measure, and commonly uses the acceleration time in practice to show automobile
Acceleration capacity, if acceleration is 1m/s2, horizontal axis radius is r, then horizontal axis section maximum tension stress σmaxFor
Then horizontal axis section maximum stress σmaxFor：
Formula 1. 2. 3. in：WzIndicate that module of anti-bending section, M indicate that section turn moment, m indicate that horizontal axis quality, a indicate horizontal axis
Central acceleration, l indicate to generate the arm of force of section turn moment；
Understand that in acceleration be 1m/s by acquired results2When, radius only needs 5 × 10-5M meets rigidity requirement, it is assumed that
Instantaneous acceleration can reach 100m/s2, allow tension stress requirement to meet, required radius is 0.5cm, therefore mold horizontal axis is straight
Diameter is set as 2cm and is sufficient for rigidity requirement.
Specific implementation mode two：Illustrate present embodiment in conjunction with Fig. 1 to Fig. 4, a kind of simulated automotive described in present embodiment
The endless track 2 travelled in micro-surface area road rumble indoor test device tests the endless track 2 that mould 2-1 are formed by eight,
The upper surface of pedestal 1 is equipped with the annular groove being made of eight groove 1-1, is embedded in an experiment mould 2- in each groove 1-1 respectively
1.On the one hand so set, easy to disassemble and micro-surface area is mated formation, on the other hand can be carried out at the same time a variety of different micro-surface areas or
The noise testing of other mixtures.Other compositions and connection relation are same as the specific embodiment one.
Specific implementation mode three：Illustrate present embodiment in conjunction with Fig. 1 to Fig. 4, a kind of simulated automotive described in present embodiment
Traveling further includes sound insulation lid 12 in micro-surface area road rumble indoor test device, 12 spiral-lock of sound insulation lid on endless track 2, and every
The madial wall of 12 lower part of sound lid and the lateral wall on 1 top of pedestal are connected through a screw thread.The height of sound insulation lid 12 is 40cm, is being tested
Before beginning, by 12 spiral-lock of sound insulation lid on endless track 2, and sound insulation lid 12 is tightened, and sound insulation lid is located on control handle,
Both so that experiment is carried out under closed no external environment noise, and also control handle had been made not to be blocked.It is other composition and connection relation with
Specific implementation mode one or two is identical.
Specific implementation mode four：Illustrate present embodiment in conjunction with Fig. 1 to Fig. 4, a kind of simulated automotive described in present embodiment
Traveling further includes sound level meter 13 and partition board 14 in micro-surface area road rumble indoor test device, and partition board 14 is arranged in endless track 2
Inside, sound level meter 13 be arranged on partition board 14.Other compositions and connection relation are the same as the specific implementation mode 3.
Specific implementation mode five：Illustrate present embodiment in conjunction with Fig. 1 to Fig. 4, a kind of simulated automotive described in present embodiment
Traveling is as follows in micro-surface area road rumble indoor test method：
Step 1: assembling testing equipment：The micro-surfacing mixture being uniformly mixed is poured into eight experiment mould 2-1 simultaneously
It strikes off rapidly, is cooled to room temperature, it will be in the corresponding groove 1-1 of eight 1 upper surfaces of experiment mould 2-1 insertion pedestals；
Step 2: experiment wheel 3 to be mounted on to the other end of horizontal axis 4, the wheel rim of experiment wheel 3 is made just to touch micro-surface area race
On road；
Step 3: sound level meter 13 is mounted on the upper surface of partition board 14, sound level meter A spectrum overlappings are selected in the measurement of noise
Characteristic and F time character of weighting select the maximum value of sound level meter to keep (HOLD) function under A weighting networks；
Step 4: by 12 spiral-lock of sound insulation lid on endless track 2, and sound insulation lid 12 is made closely to connect by screw thread with pedestal 1
It connects；
Step 5: gathered data：
Step 5 one starts engine 11, simulates real road travel speed, measures experiment 3 speed of wheel respectively and reaches
The traveling radius of noise when 20km/h, 40km/h, 60km/h, 80km/h, experiment wheel 3 is 0.5m, is computed and vertical pivot 5 can be obtained
With the angular speed that dynamic test wheel 3 should reach it is respectively 212r/min, 424r/min, 637r/min, 849r/ by horizontal axis 4
min；
The maximum sound level for the noise that experiment wheel 3 is sent out when step 5 two, record rotate at various speeds.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as be without departing from technical solution of the present invention content, according to the technical essence of the invention,
Within the spirit and principles in the present invention, to any simple modification, equivalent replacement and improvement etc. made by above example, still
Belong within the protection domain of technical solution of the present invention.
Claims (5)
1. a kind of simulated automotive traveling is in micro-surface area road rumble indoor test device, it is characterised in that：A kind of simulation vapour
Vehicle traveling micro-surface area road rumble indoor test device include pedestal (1), endless track (2), experiment wheel (3), horizontal axis (4),
Vertical pivot (5), drive shaft (6) lift vertical pivot knob (7), driven gear (8), driving gear (9), hinged column base (10) and start
Machine (11), endless track (2) are mounted on the upper surface of pedestal (1), and engine (11) is mounted in pedestal (1), drive shaft (6)
Lower end the middle part of pedestal (1) inner bottom surface is mounted on by hinged column base (10), driven gear (8) is sleeved in drive shaft (6),
Driving gear (9) is sleeved in the rotation axis of engine (11), and driving gear (9) is engaged with driven gear (8), vertical pivot (5)
Lower end is connect by lifting vertical pivot knob (7) with the upper end of drive shaft (6), and one end of horizontal axis (4) is connect with vertical pivot (5), horizontal axis
(4) the other end is connect with experiment wheel (3), and the wheel rim of experiment wheel (3) is contacted with the upper surface of endless track (2).
2. in micro-surface area road rumble indoor test device, feature exists a kind of simulated automotive traveling according to claim 1
In：The upper surface of the endless track (2) that endless track (2) is made of eight experiment moulds (2-1), pedestal (1) is equipped with by eight
The annular groove of groove (1-1) composition, each groove (1-1) is interior to be embedded in an experiment mould (2-1) respectively.
3. a kind of simulated automotive traveling according to claim 1 or claim 2 is in micro-surface area road rumble indoor test device, feature
It is：A kind of simulated automotive traveling further includes sound insulation lid (12), sound insulation lid in micro-surface area road rumble indoor test device
(12) spiral-lock is on endless track (2), and the madial wall of sound insulation lid (12) lower part and the lateral wall on pedestal (1) top pass through screw thread
Connection.
4. in micro-surface area road rumble indoor test device, feature exists a kind of simulated automotive traveling according to claim 3
In：A kind of simulated automotive traveling further includes sound level meter (13) and partition board in micro-surface area road rumble indoor test device
(14), partition board (14) setting is arranged in the inside of endless track (2), sound level meter (13) on partition board (14).
5. a kind of travelled using test device simulated automotive described in claim 1 in micro-surface area road rumble indoor test method,
It is characterized in that：A kind of simulated automotive traveling is as follows in micro-surface area road rumble indoor test method：
Step 1: assembling testing equipment：The micro-surfacing mixture being uniformly mixed is poured into eight experiment moulds (2-1) and fast
Speed strikes off, and is cooled to room temperature, will be in the corresponding groove (1-1) of embedded pedestal (1) upper surface of eight experiment moulds (2-1)；
Step 2: experiment wheel (3) to be mounted on to the other end of horizontal axis (4), the wheel rim of experiment wheel (3) is made just to touch micro-surface area
On runway；
Step 3: sound level meter (13) is mounted on the upper surface of partition board (14), sound level meter A spectrum overlappings are selected in the measurement of noise
Characteristic and F time character of weighting select the maximum value of sound level meter to keep (HOLD) function under A weighting networks；
Step 4: by sound insulation lid (12) spiral-lock on endless track (2), and keep sound insulation lid (12) and pedestal (1) tight by screw thread
Close connection；
Step 5: gathered data：
Step 5 (one) starts engine (11), simulates real road travel speed, measures experiment wheel (3) speed respectively and reaches
The traveling radius of noise when 20km/h, 40km/h, 60km/h, 80km/h, experiment wheel (3) is 0.5m, and being computed can be erected
Axis (5) is respectively 212r/min, 424r/min, 637r/ by the angular speed that horizontal axis (4) should reach with dynamic test wheel (3)
min、849r/min；
The maximum sound level for the noise that experiment wheel (3) is sent out when step 5 (two), record rotate at various speeds.
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| CN110243463B (en) * | 2019-07-04 | 2024-05-10 | 上汽通用五菱汽车股份有限公司 | Road noise testing pavement with adjustable gradient and in-vehicle noise testing method |
| CN110632176A (en) * | 2019-09-27 | 2019-12-31 | 齐鲁交通发展集团有限公司 | Indoor testing device and method for simulating micro-surfacing road noise |
| CN111537613A (en) * | 2020-06-03 | 2020-08-14 | 吉林大学 | Non-destructive testing method for clogging state of permeable asphalt pavement |
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