CN209230904U - Automobile gearbox is preloading lower internal vibration transmission function test macro - Google Patents
Automobile gearbox is preloading lower internal vibration transmission function test macro Download PDFInfo
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- CN209230904U CN209230904U CN201920037055.8U CN201920037055U CN209230904U CN 209230904 U CN209230904 U CN 209230904U CN 201920037055 U CN201920037055 U CN 201920037055U CN 209230904 U CN209230904 U CN 209230904U
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- gearbox
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- acceleration transducer
- acquiring system
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Abstract
The utility model discloses a kind of automobile gearboxes to preload lower internal vibration transmission function test macro, including gearbox, further includes bracket, pedestal, loading motor, reduction gearbox, miniature vibration excitor, acceleration transducer, signal acquiring system；The bracket is fixed in the horizontal plane；The firm banking is fixedly connected with the transmission shaft of transmission internal differential mechanism；There is suspension installation point on cabinet, the miniature vibration excitor is mounted in the cabinet suspension installation point, and for pumping signal to occur, data line is connect with signal acquiring system；The acceleration transducer is pasted on box house gear, and data line is drawn by box outer surface aperture and connect with signal acquiring system；The signal acquiring system collects pumping signal and response signal, then calculation of transfer function.The utility model has the test environment linear system for making transmission internal vibration transfer function, keeps the transmission function measured more accurate.
Description
Technical field
The utility model relates to automobile noise, vibration and sound vibration roughness fields, and in particular to automobile gearbox is preloading
Internal vibration transmission function test macro under lotus.
Background technique
Automobile noise, vibration and sound vibration roughness (Noise, Vibration, Harshness) are to measure automobile manufacture matter
One global question of amount, it is experienced as most directly and most surface to user vehicle.The NVH problem of vehicle is international vapour
One of the problem of major vehicle manufacturing enterprise of vehicle industry and parts enterprises are paid close attention to.There is statistics to show, there are about 1/3 events for vehicle
Barrier problem is that have relationship with the NVH problem of vehicle, and each major company has nearly 20% R & D Cost to consume in the NVH for solving vehicle
In problem.
The vibration noise of automobile gearbox is gearbox under dynamic exciting (gear transmission error) effect, by gearbox
Portion's meshing gear is transmitted on axis, then is transmitted to cabinet suspension through cabinet by bearing, then, is generated by vehicle body and in the car
Dynamic response, if a certain intrinsic frequency of the components in the excited frequency and transmission path of dynamic exciting matches,
Resonance will be generated, vibration noise is amplified, therefore transmission function is particularly important inside effective test speed changer.
Patent No. CN201711072108.1, patent name are " transmission system vibration passes letter test macro and method "
Patent in, this art solutions is vacantly to suspend transmission system with elastic string in midair, by using rigidity certain after self-solidifying
Artificial tooth base resin coupling gear contact Tooth on speed changer object transmission chain is pasted and fixed on together, this process engaging tooth
Wheel cannot react the mesh stiffness of the flank of tooth, bearing is in relaxation state, and transmission system is nonlinear system there is no true engagement
System, is unsatisfactory for the transmission function theory of testing, the transmission function inaccuracy tested.
Utility model content
In view of this, it is necessary to provide a kind of automobile gearboxes to preload lower internal vibration transmission function test macro,
To ensure to make the transmission function measured more as linear system in the test environment of test transmission internal vibration transfer function
Accurately.
In order to achieve the above objectives, the technical solution adopted in the utility model is:
Automobile gearbox is preloading lower internal vibration transmission function test macro, including gearbox, the speed change luggage
Cabinet is included, input shaft, jackshaft and differential mechanism are equipped in the cabinet, is arranged with intermeshing on the input shaft and jackshaft
Gear, the input shaft, jackshaft both ends are separately installed with bearing, further include horizontal fixed bracket on the ground, pedestal,
Loading motor, reduction gearbox, miniature vibration excitor, acceleration transducer, signal acquiring system；The reduction gearbox, gearbox are set respectively
In the bracket two sides；
It is connected between the gearbox and the reduction gearbox by input flange disk, the loading motor and the reduction gearbox
It is connected by shaft coupling, the pedestal is fixedly connected with the transmission shaft of transmission internal differential mechanism；
There is suspension installation point on cabinet, the miniature vibration excitor is mounted in the cabinet suspension installation point, for occurring
Pumping signal, data line are connect with signal acquiring system；
The acceleration transducer is pasted on box house gear, data line drawn by box outer surface aperture and with
Signal acquiring system connection；
The signal acquiring system collects pumping signal and response signal, then calculation of transfer function.
Further, the acceleration transducer is three-dimensional acceleration transducer, and the three-dimensional direction acceleration transducer X is hung down
Directly in the Gear Helix direction, three-dimensional acceleration transducer Y-direction is gear radial direction, three-dimensional acceleration transducer Z-direction
It is parallel to the Gear Helix direction.
Further, the three-dimensional acceleration transducer is multiple, and is mounted on corresponding gear one by one.
Further, the miniature vibration excitor is connected with signal generator, and the signal generator is connected with power amplification
Device.
The utility model uses loading motor to apply different stabilizations for gearbox for the utility model beneficial having the technical effect that
Torque, firm banking constrains the rotation of transmission internal differential mechanism, makes transmission internal gear correct engagement, and in gear axial direction
Make bearing impaction state under power, radial force effect, makes gear via jackshaft, input shaft, bearing to cabinet suspension installation point
Transmission path becomes linear system, can really and accurately measure the transmission function of entire transmission path.Difference can also be measured
Under input torque, make gear via the transmission function of jackshaft, input shaft, bearing to cabinet suspension installation point.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is Fig. 1 transmission internal structural perspective；
Fig. 3 is Fig. 2 gearbox top view；
Appended drawing reference
Gearbox 1；Input shaft 2；Jackshaft 3；Differential mechanism 4；Gear 5；Bearing 6；Bracket 7；Pedestal 8；Signal acquiring system
9；Reduction gearbox 10；Miniature vibration excitor 11；Acceleration transducer 12；Loading motor 13；Suspend installation point 14.
Specific embodiment
The utility model is further described with reference to embodiments.
In specific embodiment, with reference to attached drawing 1-3, the utility model provides a kind of automobile gearbox and is preloading lower inside
Vibration transfer function test macro, including gearbox 1, gearbox include cabinet, and input shaft 2, jackshaft 3 and poor are equipped in cabinet
Fast 4 devices are arranged with pitch wheel 5 on input shaft 2 and jackshaft 3, and input shaft 1,3 both ends of jackshaft are separately installed with axis
6 are held, further includes horizontal fixed bracket 7 on the ground, pedestal 8, loading motor 13, reduction gearbox 10, miniature vibration excitor 11, accelerate
Spend sensor 12, signal acquiring system 9；Reduction gearbox, gearbox are respectively provided at bracket two sides；
It is connected between gearbox 1 and reduction gearbox 10 by input flange disk, loading motor 13 and reduction gearbox pass through shaft coupling
Connection, loading motor 13 are that gearbox 1 provides steady torque, and reduction gearbox 10 is loading motor deceleration torque increase, pedestal 8 and gearbox
The transmission shaft of internal differential 4 is connected by output flange, so that transmission internal axis tooth is not rotated, reduction gearbox 10 and speed change
1 joint face of case is bolted on bracket；
There is suspension installation point 14 on cabinet, miniature vibration excitor 11 is mounted in cabinet suspension installation point 14, for swashing
Signal is encouraged, data line is connect with signal acquiring system；Miniature vibration excitor is connected with signal generator, and signal generator is connected with
Power amplifier.
Acceleration transducer 12 is pasted on box house gear 5, data line drawn by box outer surface aperture and with
Signal acquiring system 9 connects；In the present embodiment, acceleration transducer is preferably three-dimensional acceleration transducer, and three-dimensional acceleration passes
For sensor X-direction perpendicular to the Gear Helix direction, three-dimensional acceleration transducer Y-direction is gear radial direction, three-dimensional acceleration
Sensor Z-direction is parallel to the Gear Helix direction.Three-dimensional acceleration transducer is multiple, and is mounted on corresponding gear one by one
On 5.
Signal acquiring system 9 collects pumping signal and response signal, then calculation of transfer function.
A kind of automobile gearbox includes the following steps in the method for preloading lower internal vibration transmission function test macro；
1) acceleration transducer is arranged
Unpacking gearbox 1, pastes acceleration sensor 12 on transmission internal gear 5, and data line is fixed on input shaft 1
On, and the axis spline on input shaft and cabinet carry out telltale mark；
Case speed changer is closed, makes a call to an aperture in cabinet, by the stretching of acceleration transducer data line and and signal acquiring system
Connection；
Acceleration transducer is three-dimensional acceleration transducer and quantity is multiple, and is mounted on corresponding gear one by one,
For three-dimensional acceleration transducer X-direction perpendicular to the Gear Helix direction, the three-dimensional direction acceleration transducer Y is gear radial direction side
To three-dimensional acceleration transducer Z-direction is parallel to the Gear Helix direction.
2) gearbox is installed
Loading motor 13 is installed on level ground first, bracket 7 is installed on level ground, gearbox 1 with subtract
Fast case 10 is installed in bracket two sides respectively and is connected by input flange disk, and pedestal consolidates 4 transmission shaft of transmission internal differential mechanism
Surely it prevents it from rotating, bumps against to prevent gear rotation and acceleration transducer, it is ensured that transmission system is linear system；
3) miniature vibration excitor is installed
Miniature vibration excitor 11 is mounted in cabinet suspension installation point, for occurring vibrational excitation signal, data line with
Signal acquiring system 9 connects, and miniature vibration excitor is connected with signal generator, and signal generator connects power amplifier；In case
It is pasted with square aluminium block at body suspension installation point, and miniature vibration excitor 11 is installed on the square aluminium block, to protect
Force signal can be applied from tri- directions X, Y, Z by demonstrate,proving miniature vibration excitor, and square aluminium block volume is preferably 1 cubic centimetre.
4) signal acquisition
Miniature vibration excitor 11 issues vibrational excitation signal, vibrational excitation signal warp in gear box suspension installation point position
By bearing 6, jackshaft 3, input shaft 2, it is transmitted to gear 5 and generates vibration response signal；Data acquisition and analysis system acquisition vibration
Dynamic pumping signal and vibration response signal；
Miniature vibration excitor issues sine sweep signal, and setting amplitude is 5g, frequency 0-3000Hz, frequency increment 1Hz,
Sweep rate is 10Hz/s；The sample frequency of three-dimensional acceleration transducer is 0-6000Hz, frequency resolution 1Hz, to acceleration
It spends signal and applies rectangular window；Loading motor applies 50Nm, 100Nm, 150Nm, 200Nm, 250Nm steady torque respectively, and signal is adopted
Collecting system acquires the response signal of the pumping signal that three groups of miniature vibration excitors issue and acceleration transducer, screens vibrational excitation
Signal and vibration response signal receive three groups of signals and do average treatment, select one group of signal immediate from average signal.
5) vibration transfer function calculates
Defining vibrational excitation signal is F (t), and definition vibration response signal is Y (t), by pumping signal F (t) and response
Signal Y (t) Fourier transformation respectively obtains F (ω) and Y (ω), transmission internal vibration transfer function H (ω)=Y (ω)/F
(ω)。
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (4)
1. automobile gearbox is preloading lower internal vibration transmission function test macro, including gearbox (1), the speed change luggage
Cabinet is included, input shaft (2), jackshaft (3) and differential mechanism (4) are equipped in the cabinet, is arranged on the input shaft and jackshaft
Have pitch wheel (5), the input shaft, jackshaft both ends are separately installed with bearing (6), it is characterised in that: further include
Horizontal fixed bracket (7) on the ground, loading motor (13), reduction gearbox (10), miniature vibration excitor (11), accelerates pedestal (8)
Spend sensor (12), signal acquiring system (9)；The reduction gearbox, gearbox are respectively provided at the bracket two sides；
It is connected between the gearbox (1) and the reduction gearbox (10) by input flange disk, the loading motor (13) and institute
It states reduction gearbox (10) to connect by shaft coupling, the pedestal (8) is fixedly connected with the transmission shaft of transmission internal differential mechanism；
Having on cabinet suspension installation point (14), the miniature vibration excitor (11) is mounted on cabinet suspension installation point (14),
For pumping signal to occur, data line is connect with signal acquiring system (9)；
The acceleration transducer (12) is pasted on box house gear (5), and data line is drawn by box outer surface aperture
And it is connect with signal acquiring system (9)；
The signal acquiring system (9) collects pumping signal and response signal, then calculation of transfer function.
2. automobile gearbox as described in claim 1 exists preloading lower internal vibration transmission function test macro, feature
In: the acceleration transducer is three-dimensional acceleration transducer, and three-dimensional acceleration transducer X-direction is perpendicular to the Gear Helix side
To three-dimensional acceleration transducer Y-direction is gear radial direction, and three-dimensional acceleration transducer Z-direction is parallel to the Gear Helix
Direction.
3. automobile gearbox as claimed in claim 2 exists preloading lower internal vibration transmission function test macro, feature
In: the three-dimensional acceleration transducer is multiple, and is mounted on corresponding gear one by one.
4. automobile gearbox as described in claim 1 exists preloading lower internal vibration transmission function test macro, feature
In: the miniature vibration excitor is connected with signal generator, and the signal generator connects power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920037055.8U CN209230904U (en) | 2019-01-08 | 2019-01-08 | Automobile gearbox is preloading lower internal vibration transmission function test macro |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920037055.8U CN209230904U (en) | 2019-01-08 | 2019-01-08 | Automobile gearbox is preloading lower internal vibration transmission function test macro |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540441A (en) * | 2019-01-08 | 2019-03-29 | 重庆青山工业有限责任公司 | Automobile gearbox is preloading lower internal vibration transmission function test macro and method |
| CN112461474A (en) * | 2020-12-09 | 2021-03-09 | 安徽江淮汽车集团股份有限公司 | Method for testing vibration transmission sensitivity of parts |
-
2019
- 2019-01-08 CN CN201920037055.8U patent/CN209230904U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540441A (en) * | 2019-01-08 | 2019-03-29 | 重庆青山工业有限责任公司 | Automobile gearbox is preloading lower internal vibration transmission function test macro and method |
| CN112461474A (en) * | 2020-12-09 | 2021-03-09 | 安徽江淮汽车集团股份有限公司 | Method for testing vibration transmission sensitivity of parts |
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