CN107588916A - Fuel tank noise testing drives testing stand - Google Patents
Fuel tank noise testing drives testing stand Download PDFInfo
- Publication number
- CN107588916A CN107588916A CN201710689903.9A CN201710689903A CN107588916A CN 107588916 A CN107588916 A CN 107588916A CN 201710689903 A CN201710689903 A CN 201710689903A CN 107588916 A CN107588916 A CN 107588916A
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- fuel tank
- slide unit
- servomotor
- leading screw
- testing
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention relates to fuel tank noise testing to drive testing stand.Track is set on base of the present invention, base connection electric machine support, leading screw support, electric machine support connects servomotor, and servomotor contains brake apparatus, leading screw support connection leading screw, leading screw connects slide unit, sliding block on slide unit is connected with rail contact, slide unit connection microphone holder, microphone holder connection sonic transducer, limit switches are installed at base both ends, and limit switch connects the brake apparatus on servomotor.Instant invention overcomes the defects of the braking acceleration that current device can not provide quantization.The present invention is due to the use of closed loop servo drive system, accurate plus/minus speed can be provided to slide unit, and record fuel tank fluid whine noise, fuel tank is horizontal positioned during test bed testing noise, more meet ordinary road operating mode, test terminates slide unit can be driven to be back to initial position motor reversal, the testing time is saved, reduces tester's working strength.
Description
Technical field
The present invention relates to a kind of noise-measuring system, more particularly to fuel tank noise testing driving testing stand.
Background technology
Before making the present invention, " Chinese invention patent of Application No. 201310399146.3 " discloses a kind of combustion at present
Fuel tank noise testing simulation brake test table, the measurable fuel tank braking of the device stop the whine noise of rear-inclined fuel tank.
But the principal element for influenceing fuel tank whine noise is braking acceleration；The braking that the project can not but provide quantization accelerates
Degree, thus can not under exact representation different braking operating mode horizontal fuel tank fluid whine noise.
The content of the invention
The purpose of the present invention, which is that, overcomes drawbacks described above, develops fuel tank noise testing driving testing stand.
The technical scheme is that：
Fuel tank noise testing drives testing stand, including base, and it is mainly characterized by, and track is set on base,
Base connects electric machine support, leading screw support, electric machine support connection servomotor respectively, and servomotor contains brake apparatus, leading screw
Support connects leading screw, leading screw connection slide unit, and the sliding block on slide unit is connected with rail contact, and slide unit connects microphone holder, Mike
Wind support connects sonic transducer, base both ends installation limit switches, and limit switch connects the brake apparatus of servomotor.
The electric machine support and leading screw support are concentric.
The slide unit end face connection speed sensor, acceleration transducer.
The ball-screw uses hollow form.
Shaft coupling is flexible coupling between the servomotor and ball-screw.
The sonic transducer connects hurricane globe.
Advantages of the present invention and effect are due to the use of closed loop servo drive system, can be provided to slide unit accurate
Plus/minus speed, and fuel tank fluid whine noise is recorded, and prior art can not accurate Characterization braking deceleration.The present invention
In test bed testing noise, fuel tank is horizontal positioned, more meets ordinary road operating mode, and it is fuel tank that prior art, which surveys noise,
Whine noise during inclination.After test terminates, motor reversal can be driven slide unit to be back to initial position by this testing stand, and existing
Technology needs to use manually is pushed into a high position by dolly, laborious time-consuming；Therefore this testing stand saves the testing time, reduces tester
Working strength.
Brief description of the drawings
Fig. 1 --- the front view of fuel tank noise testing driving testing stand of the present invention.
Fig. 2 --- Fig. 1 close-up schematic view.
Fig. 3 --- the axonometric schematic diagram of slide unit of the present invention.
Component names corresponding to each label expression are as follows in figure：
Base 1, electric machine support 1-1, leading screw support 1-2, servomotor 2, brake apparatus 2-1, shaft coupling 3, leading screw 4, lead
Rail 5, track 5-1, sliding block 5-2, slide unit 6, limit switch 7, speedometer 8, accelerometer 9, microphone holder 10, sonic transducer
11。
Embodiment
The present invention technical thought be：
By setting servomotor rotating speed and matching ball-screw helical pitch, a variety of braking deceleration operating modes can be accurately simulated；
And the fluid whine noise under quantitative damped condition is measured, and ensure that fuel tank is horizontal positioned during measurement.
As Figure 1-3：
The present invention includes base 1, and the top of base 1 is provided with the electric machine support 1-1 that can install servomotor 2, can installed
The leading screw support 1-2 of ball-screw 4, and above-mentioned electric machine support 1-1 is concentric.Servo electricity is installed on the electric machine support 1-1
Machine 2, servomotor 2 contain brake apparatus 2-1；(ball) leading screw 4 is installed, and both are directly by (soft on the leading screw support 1-2
Property) shaft coupling 3 connects, to reduce ambient noise during system rotation.Leading screw 4 and the routing motion of slide unit 6, fuel tank are fixed on cunning
Above platform.In order to reduce the deformation of leading screw 4, the both sides of slide unit 6 are provided with sliding block 5-2, sliding block 5-2 and installation and base upper rail 5-
1 coordinates, and plays a part of supporting slide unit 6.The end face of the slide unit 6 is provided with velocity sensor 8 and acceleration transducer 9, with
Servomotor structure 2 enables slide unit 6 accurately to be moved according to the damped condition of setting into closed-loop control system.The side of slide unit 6
Face is provided with microphone holder 10, and voicing sensor 11 is installed on the microphone holder 10；The both ends of base 1 are then provided with
Limit switch 7, after slide unit 6 triggers limit switch 7, servomotor 2 itself will pass through brake apparatus 2-1 brake hards and locking
The main shaft of servomotor 2, prevents slide unit 6 from being collided with base 1.
Application process brief description of the present invention：
During test, servomotor 2 drives slide unit 6 to be moved ahead with the acceleration and acceleration time of setting, is imposed a condition when reaching
Afterwards, servomotor 2 shuts down.Operating mode 1：Slide unit 6 continues to slide on track 5-1 by inertia, and now simulating vehicle is braked
But the whine noise of fuel tank when not stopping completely.After the continuous service of slide unit 6 is to triggering limit switch 7, test terminates；Braking dress
Put 2-1 work and locking rotor, slide unit 6 stop.Operating mode 2：The direct locking rotors of brake apparatus 2-1, the work of sonic transducer 11
Make, record fluid whine noise；The whine noise of fuel tank when now simulating vehicle is braked and stopped completely.
After test terminates, adjustment servomotor 2 inverts, and slide unit 6 is returned initial position；It now can adjust servomotor 2
Parameter, continue to test.
The preferred embodiments of the invention is the foregoing is only, not thereby limits to the scope of patent protection of the present invention.Except upper
State outside embodiment, the present invention there can also be other embodiment.It is all using equivalent substitution or the technical scheme of equivalent transformation form,
All fall within the protection domain of application claims.Technical characteristic of the invention without description can be real by or using prior art
It is existing, it will not be repeated here.
As the present invention preferred scheme, the testing stand can be braked with test fuel tank after dynamic noise.Such as initial speed
Spend for V1, V is changed into speed after certain braking deceleration a braking times t2(V2≠0)；Slide unit 6 can be now allowed to be put down by inertia
Move, and related whine noise is recorded using sonic transducer 11.This operating mode often occurs in low vehicle speeds, and prior art
The damped condition can not be simulated.
As the preferred scheme of the present invention, the testing stand is placed in anechoic room, and control system is placed in outside anechoic room.Survey
Examination personnel observe test process by being installed on the monitoring system inside anechoic room.In addition to Height of oil is changed, all tests are equal
Tester is not needed to enter noise elimination in-house operation.On the one hand test error caused by human factor can be reduced, on the other hand
Tester's working strength can be reduced.
As the preferred scheme of the present invention, shaft coupling 3 joins to be flexible between the driving servomotor 2 and ball-screw 4
Axle device, buffering absorbing can be played and reduce the purpose of system running noise.
As the preferred scheme of the present invention, the ball-screw 4 is preferentially from compared with large pitch；Now same motor speed
Bigger acceleration can be provided；And under same braking acceleration operating mode, the rotating speed of servomotor 2 is lower, therefore ambient noise
Can be smaller.
As the preferred scheme of the present invention, the ball-screw 4 can use hollow form；The ball-screw of hollow form
4 can reduce the inertia of whole system, improve the dynamic response characteristic of system.
As the preferred scheme of the present invention, the driving servomotor 2 and ball-screw 4 coordinate caused braking/
Drive acceleration be less than 1 g can (g refers to acceleration of gravity), 0 ＜ a ＜ g.Because vehicle braking acceleration itself is less than 1
Individual g, therefore testing stand is without producing bigger braking acceleration.
As the preferred scheme of the present invention, the leading screw 4 and guide rail slide block 5-2 can use wear damping alloy or engineering plastic
Material, such as copper alloy and modified PE EK.The application of above-mentioned high damping material can obviously reduce vibration and the running noise of testing stand, carry
The measurement accuracy of high fluid whine noise.
As the preferred scheme of the present invention, the inside of servomotor 2 must contain brake apparatus 2-1；When slide unit 6 triggers
The brake apparatus 2-1 of servomotor 2 starts and worked after limit switch.
As the preferred scheme of the present invention, the sonic transducer 11 must install hurricane globe when testing, when having reduced motion
The interference that wind is made an uproar to measurement result.
Claims (6)
1. fuel tank noise testing drives testing stand, including base, it is characterised in that track is set on base, base connects respectively
Electric machine support, leading screw support, electric machine support connection servomotor are connect, servomotor contains brake apparatus, leading screw support connecting filament
Thick stick, leading screw connection slide unit, the sliding block on slide unit be connecteds with rail contact, and slide unit connects microphone holder, and microphone holder connects
Sonic transducer, base both ends installation limit switches, limit switch connect the brake apparatus of servomotor.
2. fuel tank noise testing according to claim 1 drives testing stand, it is characterised in that the electric machine support and silk
Thick stick support is concentric.
3. fuel tank noise testing according to claim 1 drives testing stand, it is characterised in that the slide unit end face connection
Velocity sensor, acceleration transducer.
4. fuel tank noise testing according to claim 1 drives testing stand, it is characterised in that the ball-screw uses
Hollow form.
5. fuel tank noise testing according to claim 1 drives testing stand, it is characterised in that the servomotor and rolling
Shaft coupling is flexible coupling between ballscrew.
6. fuel tank noise testing according to claim 1 drives testing stand, it is characterised in that the sonic transducer connection
Hurricane globe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710689903.9A CN107588916B (en) | 2017-08-08 | 2017-08-08 | Fuel tank noise measurement drive test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710689903.9A CN107588916B (en) | 2017-08-08 | 2017-08-08 | Fuel tank noise measurement drive test bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107588916A true CN107588916A (en) | 2018-01-16 |
| CN107588916B CN107588916B (en) | 2020-06-09 |
Family
ID=61042260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710689903.9A Active CN107588916B (en) | 2017-08-08 | 2017-08-08 | Fuel tank noise measurement drive test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107588916B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459128A (en) * | 2018-09-27 | 2019-03-12 | 上海理工大学 | A kind of fuel tank of vehicle oil liquid whine noise test macro |
| CN109916503A (en) * | 2019-03-22 | 2019-06-21 | 重庆长安汽车股份有限公司 | A kind of fuel tank rocks sounding method for testing |
| CN112985824A (en) * | 2019-12-18 | 2021-06-18 | 广州汽车集团股份有限公司 | Oil liquid shaking test bed and oil liquid shaking test method |
| CN114558848A (en) * | 2022-02-28 | 2022-05-31 | 歌尔股份有限公司 | Full-automatic UV cleaning equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459128A (en) * | 2018-09-27 | 2019-03-12 | 上海理工大学 | A kind of fuel tank of vehicle oil liquid whine noise test macro |
| CN109916503A (en) * | 2019-03-22 | 2019-06-21 | 重庆长安汽车股份有限公司 | A kind of fuel tank rocks sounding method for testing |
| CN112985824A (en) * | 2019-12-18 | 2021-06-18 | 广州汽车集团股份有限公司 | Oil liquid shaking test bed and oil liquid shaking test method |
| CN112985824B (en) * | 2019-12-18 | 2024-03-15 | 广州汽车集团股份有限公司 | Oil shaking test bed and oil shaking test method |
| CN114558848A (en) * | 2022-02-28 | 2022-05-31 | 歌尔股份有限公司 | Full-automatic UV cleaning equipment |
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| Publication number | Publication date |
|---|---|
| CN107588916B (en) | 2020-06-09 |
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