CN207779547U - Noise-measuring system for porous asphalt pavement - Google Patents
Noise-measuring system for porous asphalt pavement Download PDFInfo
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- CN207779547U CN207779547U CN201721884093.4U CN201721884093U CN207779547U CN 207779547 U CN207779547 U CN 207779547U CN 201721884093 U CN201721884093 U CN 201721884093U CN 207779547 U CN207779547 U CN 207779547U
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Abstract
The utility model discloses a kind of noise-measuring system for porous asphalt pavement, including pedestal, it is set to the height-adjustable support leg of base bottom, driving control system, environmental simulation system and noise detection system；The driving control system includes cylinder, connecting rod, servo motor, gearbox and tire installation support shaft, the cylinder is installed on by holder right over base central, one end of the connecting rod is rotatably attached by bearing and piston rod, servo motor is arranged in the other end of the connecting rod, the output shaft of the servo motor connects tire installation support shaft, the tire installation support shaft, servo motor and connecting rod coaxial arrangement after gearbox；The annular road surfacing area for being run for tire is equipped at the top of the pedestal；The noise detection system includes controller, sound transducer, speed probe and display panel, and the signal input part of the controller is separately connected the signal output end of sound transducer and speed probe.
Description
Technical field
The utility model is related to pavement material detection device field, especially a kind of noise for porous asphalt pavement is surveyed
Trial assembly is set.
Background technology
In recent years, the development of highway communication cause, driven the rapid economic development through area, communications and transportation with it is economical
Development play the role of mutually support, mutually push.With the mileage open to traffic of highway, vehicle flowrate and speed of operation and day
All to increase, highway traffic noise is polluted to subjective reflection normal life, work, study, the annoyance level of rest environment and range
Aggravate therewith and expands.Especially in recent years, urban construction and development is rapid, and the street of newly-built enlarging, road make original remote, peace
Quiet region becomes bustling noisy downtown area, to aggravate influence of the traffic noise to surrounding enviroment.Highway traffic noise
Pollution has gradually become the problem of environmental pollution that subjective reflection is paid close attention to the most.
Currently, the method for pavement noise detection mainly has sound pressure level detection method (SPL), sound intensity level detection method (SI) and sound ray
Array detection method (AAT).Current test method is to allow standard vehicle by certain travel speed by needing road to be tested
Face, it is horizontal using microphone measurement noise in the microphone that road surface side is placed, can also by one or more microphones according to away from
Closely the distance of (general 20era), measurement tire roll the noise sent out on the outside of tire.
On the one hand, in testing, in order to reduce wind noise, traffic noise and other vehicle noises or trailer noise itself
Influence needs to use stringent safeguard measure, and the selection of tire and the Precise Installation Position of microphone are two important parameters,
And the latter has a major impact measurement result.
On the other hand, when detecting, need road pavement material mating formation into certain length by certain Pavement design
Road section surface is tested, involved experimental cost is higher, when especially needing to test a variety of sections simultaneously, required experiment road section surface
It is then more.
Therefore, how to simplify road rumble detection method, especially in the feelings of experiment road section surface that need not mat formation on a large scale
Under condition, can also road pavement noise be detected, improve detection efficiency, reduce testing cost, accurate testing result become road surface
New demand in noise measuring.
Utility model content
To solve problems of the prior art, the utility model provides a kind of noise for porous asphalt pavement
Test device.
The technical solution adopted in the utility model is：
A kind of noise-measuring system for porous asphalt pavement, including pedestal, be set to base bottom it is height-adjustable
Support leg, driving control system, environmental simulation system and noise detection system；The bottom periphery of the pedestal is evenly equipped at least 3
The top perimeter of a support leg, the pedestal is evenly equipped at least three level meter；The driving control system include cylinder, connecting rod,
Servo motor, gearbox and tire installation support shaft, the cylinder is installed on by holder right over base central, and cylinder
Piston rod towards pedestal, one end of the connecting rod is rotatably attached by bearing and piston rod, and connecting rod is perpendicular to piston
Servo motor is arranged in the other end of bar, the connecting rod, and the output shaft of the servo motor connects tire installation branch after gearbox
Support shaft, the tire installation support shaft, servo motor and connecting rod coaxial arrangement；It is equipped with for for tire at the top of the pedestal
The annular road surfacing area of operation；The environmental simulation system includes that heating coil described in heating coil is set in pedestal, and is somebody's turn to do
Heating coil is corresponding with road surfacing area；The noise detection system include controller, sound transducer, speed probe and
Display panel, the sound transducer and speed probe are set in tire installation support shaft, the signal of the controller
Input terminal is separately connected the signal output end of sound transducer and speed probe.
Preferably, the both sides in the road surfacing area are equipped with the annular stop portion to raise up.
Preferably, the environmental simulation system further includes raintank and rainwater spray head, and the raintank is set up by branch
In on connecting rod, the rainwater spray head is set to corresponding with tire above the end of tire installation support shaft.
Preferably, the guide sleeve being fixed on cylinder is arranged with outside the piston rod, the guide sleeve is equipped with extremely
Few 3 sliding slots along its axis direction, the runner ring are uniformly distributed around the axle center of guide sleeve, the piston rod be equipped with
The sliding block of sliding slot cooperation.
The utility model has the beneficial effects that：
1, without special, extensive, experiment road surface of individually mating formation, and only need to be by a small amount of porous asphalt pavement material by design
The advantages of demand, the road surfacing area on pedestal of mating formation has ground surface material dosage few, is not take up existing road surface；
It, only need to be by the test material in the road surfacing area of pedestal of mating formation when 2, if necessary to replace test pavement material
After removing totally, new test pavement material is re-lay, has the characteristics that testing efficiency is high, testing cost is cheap；
3, it can be pressed by cylinder and easily simulate the load that the vehicle road pavement of different model generates, while can also led to
The noise for crossing the tire road pavement generation that replacement test tire easily simulates different model is detected；
4, tyre rotation is directly driven through gearbox by servo motor, tire on the drive wheels is still linear motion, is only existed
Done circular motion under the restriction of piston rod, compared to directly by connecting rod rotation tire on the drive wheels directly move in a circle for, this reality
With novel tire motion simulating degree higher, test result is more acurrate；
5, have the characteristics that small, therefore when carrying out road rumble detection, can carry out, can effectively keep away indoors
Exempt from the influence to test data of wind noise, traffic noise and other vehicle noises or trailer noise itself, while passing through connection
Noise measuring table in the connecting rod in telescopic connecting rod and adjustable direction, can improve testing result accuracy；
6, it by environmental simulation system, while can also simulate in the weather conditions such as rain, water, different pavement temperatures,
The noise for needing the ground surface material detected, structure generated by paving structure in simulating vehicle driving process is detected；
7, by using the display panel of controller, the detection of man-machine window operation, display, the association of all kinds of parameters are realized
It is very clear.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Reference numeral：10- pedestals, 11- support legs, 12- level meters, 13- holders, 14- road surfacings area, 15- limiting sections,
20- cylinders, 21- piston rods, 22- connecting rods, 23- servo motors, 24- gearboxes, 25- tires installation support shaft, 26- guide sleeves
Pipe, 27- sliding slots, 28- sliding blocks, 30- raintanks, 31- holders, 32- rainwater spray heads, 40- tires.
Specific implementation mode
The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
Embodiment
As shown in Figure 1, a kind of noise-measuring system for porous asphalt pavement, including pedestal 10, it is set to 10 bottom of pedestal
The height-adjustable support leg in portion, driving control system, environmental simulation system and noise detection system；The bottom of the pedestal 10
Periphery is evenly equipped at least three support leg, and the top perimeter of the pedestal 10 is evenly equipped at least three level meter 12；The transmission control
System processed includes that cylinder 20, connecting rod 22, servo motor 23, gearbox 24 and tire installation support shaft 25, the cylinder 20 are logical
It crosses holder 13 to be installed on right over 10 center of pedestal, and the piston rod 21 of cylinder 20 is towards pedestal 10, one end of the connecting rod 22
It is rotatably attached by bearing and piston rod 21, and connecting rod 22, perpendicular to piston rod 21, the other end of the connecting rod 22 is arranged
The output shaft of servo motor 23, the servo motor 23 connects tire installation support shaft 25, the tire after gearbox 24
Installation support shaft 25, servo motor 23 and connecting rod 22 are coaxially disposed；10 top of the pedestal is equipped with for being run for tire 40
Annular road surfacing area 14；The environmental simulation system includes that heating coil described in heating coil is set in pedestal 10, and is somebody's turn to do
Heating coil is corresponding with road surfacing area 14；The noise detection system includes controller, sound transducer, speed probe
And display panel, the sound transducer and speed probe are set in tire installation support shaft 25, the controller
Signal input part is separately connected the signal output end of sound transducer and speed probe.
Before test, first passes through support leg and adjust pedestal to level, can be examined at any time by level meter in adjustment process
It looks into, regulates the porous asphalt pavement material needed in the laying test of road surfacing area after pedestal, simulate real roads.
When test, start servo motor, tyre rotation is driven, because connecting rod is connected with piston rod so that tire is around piston rod
It moves in a circle, simulated automotive is run on true road surface.Ground surface material, the structure progress simulating vehicle detected to needs is run over
The noise generated by paving structure in journey is detected, and by sound transducer measurement noise size, is surveyed by speed probe
Tire rotational speed is measured, the car speed of simulation can be also calculated by tire rotational speed combination tire circumference, and will be upper by display panel
Parameter is stated to be shown.
It can be pressed by cylinder and easily simulate the load that the vehicle road pavement of different model generates, while can also passed through
The noise for replacing the tire road pavement generation that test tire easily simulates different model is detected.
It is heated by heating coil, simulates pavement temperature in the case of different weather, it can be to being produced under the conditions of different pavement temperatures
Raw noise is detected.
The both sides in the road surfacing area 14 are equipped with the annular stop portion 15 to raise up in one of the embodiments,.
Limit reference is carried out with annular stop portion, facilitates the laying of test pavement.
In another embodiment, the environmental simulation system further includes raintank 30 and rainwater spray head 32, described
Raintank 30 is set to by holder 31 on connecting rod 22, and the rainwater spray head 32 is set on the end of tire installation support shaft 25
Side is corresponding with tire 40.
It can simulate in weather conditions such as rain, water, noise of the tire when road surface is run is tested.
In another embodiment, the guide sleeve 26 being fixed on cylinder 20, institute are arranged with outside the piston rod 21
Sliding slot 27 of the guide sleeve 26 equipped at least three along its axis direction is stated, the sliding slot 27 is around the axle center of guide sleeve 26
It is uniformly distributed, the piston rod 21 is equipped with the sliding block 28 coordinated with sliding slot 27.
It by the cooperation of guide sleeve, sliding slot and sliding block, avoids piston rod that angle change occurs, causes tire operation different
Often, to influence the accuracy of test result.
Specific embodiment of the present utility model above described embodiment only expresses, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (4)
1. a kind of noise-measuring system for porous asphalt pavement, which is characterized in that including pedestal, be set to base bottom it is adjustable
Save support leg, driving control system, environmental simulation system and the noise detection system of height；The bottom periphery of the pedestal is uniformly distributed
There are at least three support leg, the top perimeter of the pedestal to be evenly equipped at least three level meter；The driving control system includes gas
Cylinder, connecting rod, servo motor, gearbox and tire installation support shaft, the cylinder by holder be installed on base central just on
Side, and the piston rod of cylinder, towards pedestal, one end of the connecting rod is rotatably attached by bearing and piston rod, and connecting rod hangs down
Directly in piston rod, the other end of the connecting rod is arranged servo motor, the output shaft of the servo motor fifth wheel after gearbox
Tire installation support shaft, the tire installation support shaft, servo motor and connecting rod coaxial arrangement；It is equipped with and uses at the top of the pedestal
In the annular road surfacing area run for tire；The environmental simulation system includes that heating coil described in heating coil is set to pedestal
It is interior, and the heating coil is corresponding with road surfacing area；The noise detection system includes controller, sound transducer, rotating speed
Sensor and display panel, the sound transducer and speed probe are set in tire installation support shaft, the control
The signal input part of device is separately connected the signal output end of sound transducer and speed probe, the signal output of the controller
The signal input part of end connection display panel.
2. the noise-measuring system according to claim 1 for porous asphalt pavement, which is characterized in that the road surface paving
If the both sides in area are equipped with the annular stop portion to raise up.
3. the noise-measuring system according to claim 1 for porous asphalt pavement, which is characterized in that the environment mould
Quasi- system further includes raintank and rainwater spray head, and the raintank is set up in by branch on connecting rod, and the rainwater spray head is set
It is corresponding with tire above the end that tire installs support shaft.
4. the noise-measuring system according to claim 1 for porous asphalt pavement, which is characterized in that the piston rod
Outer to be arranged with the guide sleeve being fixed on cylinder, the guide sleeve is equipped at least three along the sliding slot of its axis direction, institute
It states runner ring to be uniformly distributed around the axle center of guide sleeve, the piston rod is equipped with the sliding block coordinated with sliding slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721884093.4U CN207779547U (en) | 2017-12-28 | 2017-12-28 | Noise-measuring system for porous asphalt pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721884093.4U CN207779547U (en) | 2017-12-28 | 2017-12-28 | Noise-measuring system for porous asphalt pavement |
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| Publication Number | Publication Date |
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| CN207779547U true CN207779547U (en) | 2018-08-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397922A (en) * | 2020-04-09 | 2020-07-10 | 郭颂 | Intelligent test system and test method for physical performance of automobile tire manufacturing |
-
2017
- 2017-12-28 CN CN201721884093.4U patent/CN207779547U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397922A (en) * | 2020-04-09 | 2020-07-10 | 郭颂 | Intelligent test system and test method for physical performance of automobile tire manufacturing |
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