CN205333326U - Wheel force transfer function testing device in free state - Google Patents
Wheel force transfer function testing device in free state Download PDFInfo
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- CN205333326U CN205333326U CN201620071983.2U CN201620071983U CN205333326U CN 205333326 U CN205333326 U CN 205333326U CN 201620071983 U CN201620071983 U CN 201620071983U CN 205333326 U CN205333326 U CN 205333326U
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- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 238000012546 transfer Methods 0.000 title abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 39
- 230000001133 acceleration Effects 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 7
- 230000004044 response Effects 0.000 abstract description 6
- 230000006870 function Effects 0.000 description 28
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model provides a wheel force transfer function testing device in a free state, which comprises an adjustable bracket, a wheel force transfer function testing device, a wheel center accelerometer, a tire top accelerometer, a force triggering device, a data acquisition unit and a computer; the wheel force transfer function testing device comprises a disc and an eccentric boss arranged at the central position of the disc; the wheel center accelerometer and the tire top accelerometer are connected to the input end of the data acquisition unit through connecting wires; the force trigger device is connected to the input end of the data acquisition unit; and the output end of the data acquisition unit is connected with the computer. The utility model can obtain the response of the exciting force in three directions at the wheel center position at one time; the purpose of obtaining the tire skin vibration response by exciting the wheel center of the wheel is achieved, and the actual stress mode of the wheel is simulated more truly.
Description
Technical field
This utility model belongs to auto NVH experimental technique field, especially relates to vehicle wheel forces transmission function test device under a kind of free state
Background technology
Increase along with China's auto output and automobile pollution, vehicle safety performance is proposed tightened up requirement by China's automotive regulation, the quality of automobile is increasingly paid close attention to by client simultaneously, NVH (N-noise, V-vibration, H-Harshness) noise and vibration comfortableness be increasingly becoming decision the most important index of automotive quality sense。In order to exactly define and describe vehicle NVH performance, auto NVH experimental technique is arisen at the historic moment。
The topmost function of wheel system is the power that transmission acts between road surface and suspension, and relaxes the impact shock produced in vehicle traveling process from road roughness, and the vibration that decay thus causes, to ensure NVH performance in ride of vehicle and car。
Vehicle wheel forces transmission function method of testing under free state, with tire system from as object of study, foundation is provided for analyzing the impact on tire force transfer function characteristics such as tire construction feature, material, technique, wheel hub factor, the best for realizing with vehicle body to promote car load level of NVH optimal objective is mated, it is achieved car load NVH optimal objective。
There are two difficult problems in existing test vehicle wheel forces transmission functional procedure: one is cannot directly obtain wheel nearly core wheel position vibrating numerical, two is that power triggering device cannot the nearly core wheel position of direct excited vibration wheel。
Summary of the invention
In view of this, this utility model is directed under a kind of free state vehicle wheel forces transmission function method of testing, once can obtain nearly core wheel position acceleration of vibration and tire top acceleration of vibration numerical value to realize triggering, thus obtaining vehicle wheel forces to transmit function。
For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that
Vehicle wheel forces transmission function test device under a kind of free state, including adjustable support, be arranged on the vehicle wheel forces transmission function test device at hub for vehicle wheel place, the core wheel accelerometer being arranged on vehicle wheel forces transmission function test device, be arranged on the tire top accelerometer at vehicle tyre top place, power triggers device, data acquisition unit and computer；Described vehicle wheel forces transmission function test device includes disk and is arranged on the eccentric boss at circle disk center place, and the eccentric face of eccentric boss is parallel to disk principal plane, and the plane-parallel of eccentric boss is in ground, and the vertical plane of eccentric boss is perpendicular to ground；Described core wheel accelerometer, tire top accelerometer are connected to the input of data acquisition unit by connecting line；Described power triggers device and is connected to the input of data acquisition unit；The outfan of described data acquisition unit connects described computer。
Further, described disk fastens bolt together with wheel hub assembling by interior hexagonal, described disk is additionally provided with fine setting connecting hole, is used for finely tuning disk。
Further, described core wheel accelerometer is 3-axis acceleration sensor。
Further, described tire top accelerometer is 3-axis acceleration sensor。
Further, described core wheel accelerometer is arranged on the eccentric face of eccentric boss, and the geometric center of core wheel accelerometer is coaxial with the center of circle of described disk, and tire top accelerometer is positioned at vehicle tyre top and periderm tangency location。
Further, described core wheel accelerometer is bonding with described eccentric boss by adhesive glue。
Further, described tire top accelerometer is bonding with described eccentric boss by adhesive glue。
Further, it is characterised in that: it is power hammer that described power triggers device。
Relative to prior art, under a kind of free state described in the utility model, vehicle wheel forces transmission function test device has the advantage that
(1) vehicle wheel forces transmission function test device makes capable trigger position and core wheel accelerometer core wheel as close as possible, only need to arrange 2 acceleration of vibration meters, power triggers device only needs effect can obtain core wheel acceleration responsive, tire top acceleration responsive for 1 time, thus obtaining vehicle wheel forces transmission function；
(2) considering the diversity of hub for vehicle wheel planform, the method may insure that the concordance that each energized position is wheel disk place axle and energized position accelerometer position；
(3) devising a set of power being connected with wheel transmission function test device, this device mainly solves two key issues of wheel vibration isolation test, and one can obtain three direction exciting force responses of wheel disk position once；Its two, achieve as much as possible by encouraging wheel disk to obtain the purpose of periderm vibratory response, simulate the force way that wheel is actual more truly；Make whole test convenient, close actual；
(4) the most reduction vehicle wheel forces transmission function that is designed to of disk bias boss tests device quality, to reduce the additional mass impact on test system, and it is able to ensure that test every time can obtain core wheel position vibrating numerical and reduction power passes letter experimental test difficulty, it is ensured that the concordance of test result every time；
(5) adopt height adjustment bracket device to achieve the purpose that the big trundle of different size is tested, solve the versatility problem of test。
Accompanying drawing explanation
The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model。In the accompanying drawings:
Fig. 1 is the structural representation of vehicle wheel forces transmission function test device under a kind of free state described in the embodiment of the present invention；
Fig. 2 is the front view of the vehicle wheel forces transmission function test device described in this utility model embodiment；
Fig. 3 is the side view of the vehicle wheel forces transmission function test device described in this utility model embodiment。
Description of reference numerals:
1-adjustable support；2-vehicle wheel forces transmission function test device；3-core wheel accelerometer；4-tire top accelerometer；5-power triggers device；6-data acquisition unit；7-computer；Hexagonal fastening bolt in 21-；22-nut；23-packing ring；24-disk；25-bias boss；26-finely tunes connecting hole；251-bias face；252-horizontal plane；253-vertical plane；254-arc surface。
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in this utility model and the feature in embodiment can be mutually combined。
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model。Additionally, term " first ", " second " etc. are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic。Thus, the feature defining " first ", " second " etc. can express or implicitly include one or more these features。In description of the present utility model, except as otherwise noted, " multiple " are meant that two or more。
In description of the present utility model, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals。For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in this utility model by concrete condition。
Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail。
As it is shown in figure 1, vehicle wheel forces transmission function test device under a kind of whole vehicle state,
Vehicle wheel forces transmission function test device under a kind of free state, including adjustable support 1, be arranged on the vehicle wheel forces transmission function test device 2 at hub for vehicle wheel place, the core wheel accelerometer 3 being arranged on vehicle wheel forces transmission function test device, be arranged on the tire top accelerometer 4 at vehicle tyre top place, power triggers device 5, data acquisition unit 6 and computer 7；Described vehicle wheel forces transmission function test device 2 includes disk 24 and is arranged on the eccentric boss 25 of disk 24 circle centre position, the eccentric face 251 of eccentric boss 25 is parallel to disk 24 principal plane, the horizontal plane 252 of eccentric boss 25 is parallel to ground, and the vertical plane 253 of eccentric boss 25 is perpendicular to ground；Described core wheel accelerometer 3, tire top accelerometer 4 are connected to the input of data acquisition unit 6 by connecting line；Described power triggers device 5 and is connected to the input of data acquisition unit 6；The outfan of described data acquisition unit 6 connects described computer 7。
Described disk 24 fastens bolt 21 together with wheel hub assembling by interior hexagonal, described disk 24 is additionally provided with fine setting connecting hole 26, is used for finely tuning disk 24。
Described core wheel accelerometer 3 is 3-axis acceleration sensor。
Described tire top accelerometer 4 is 3-axis acceleration sensor。
Described core wheel accelerometer 3 is arranged on the eccentric face 251 of eccentric boss 25, and the geometric center of core wheel accelerometer 3 is coaxial with the center of circle of described disk 24。
Described core wheel accelerometer 3 is bonding with described eccentric boss 25 by adhesive glue。
Described tire top accelerometer 4 is bonding with described eccentric boss 25 by adhesive glue。
Described power triggers device 5 and hammers into shape for power。
Work process of the present utility model is as follows: first passes through elastic string and is sling by wheel and depart from ground, wheel height is regulated to overhead 10cm highly by adjustable support 1, in the most central level indicator that prevents in tire table top upper end, regulated and control the levelness of surface of tyre by level indicator, its face, sidewall is made to be perpendicular to ground adjusting wheel relative position, to ensure that wheel hub and braking dish joint face are perpendicular to ground；Installing wheel power transmission function test device 2, during installation, deviates from disk 24 eccentric boss face and is combined near brake disc side with wheel hub, and make disk 24 center coaxial with core wheel；The horizontal plane 252 again making eccentric boss 25 is parallel to the ground, arranges that equilibristat guarantees its horizontal level by horizontal plane；Fasten together with disk 24 and wheel hub assemble by bolt 22 finally by interior hexagonal, when regulating that horizontal plane is parallel to the ground spends, its level requirement can be realized by finely tuning connecting hole 26；After installing vehicle wheel forces transmission function test device 2, again by placing the horizontal level of wheel tyre surface during level indicator adjusts in position, tire tread tire top, to guarantee the horizontal level of tyre surface；Wherein disk 24 plays layout core wheel accelerometer 3 effect and power hammer transmission percussion power effect, and interior hexagonal fastening bolt 21, nut 22 play and wheel hub fastening effect with packing ring 23。Disk body, as installing core wheel accelerometer 3 and power hammer force body, deviates from eccentric boss 25 side and hub for vehicle wheel by it and is affixed the incompatible transfer wheel heart near brake disc side to the active force between periderm。On disk, distribution has 5 fine setting connecting holes 26, and its effect is by finely tuning eccentric boss 25。Core wheel accelerometer 3 is arranged in the eccentric face 251 of eccentric boss 25, core wheel accelerometer 3 is 3-axis acceleration sensor, make the X of core wheel accelerometer 3, Y, Z-direction parallel respectively with eccentric 25 3 directions of boss respectively, and ensure that the geometric center of core wheel accelerometer 3 is coaxial with the center of circle o of disk 24, by adhesive glue by bonding with eccentric boss 25 for core wheel accelerometer 3；Respectively core wheel accelerometer 3 and tire top accelerometer 4 are connected to data acquisition unit 6, power is triggered device 5 simultaneously and is connected to data acquisition unit 6, data acquisition unit 6 connects computer 7 by connecting line, data acquisition unit 6 has central processing unit (CPU), read only memory (ROM), readable and writable memory (RAM), screen display, keyboard and computer interface, is connected with computer 6 by interface；Firmly trigger the device 5 eccentric face 251 of hammering bias boss 25, horizontal plane 252,253 3 directions of vertical plane respectively, the power obtaining three directions triggers device pumping signal, utilize the power that data acquisition unit 6 records three directions to trigger pumping signal and the core wheel accelerometer response signal of device simultaneously, and tire top accelerometer response signal, data acquisition unit 6 sends data in computer 7, and computer 7 calculates and obtains vehicle wheel forces transmission function。
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model。
Claims (8)
1. vehicle wheel forces transmission function test device under a free state, it is characterized in that, including adjustable support, be arranged on the vehicle wheel forces transmission function test device at hub for vehicle wheel place, the core wheel accelerometer being arranged on vehicle wheel forces transmission function test device, be arranged on the tire top accelerometer at vehicle tyre top place, power triggers device, data acquisition unit and computer；Described vehicle wheel forces transmission function test device includes disk and is arranged on the eccentric boss at circle disk center place, and the eccentric face of eccentric boss is parallel to disk principal plane, and the plane-parallel of eccentric boss is in ground, and the vertical plane of eccentric boss is perpendicular to ground；Described core wheel accelerometer, tire top accelerometer are connected to the input of data acquisition unit by connecting line；Described power triggers device and is connected to the input of data acquisition unit；The outfan of described data acquisition unit connects described computer。
2. vehicle wheel forces transmission function test device under a kind of free state according to claim 1, it is characterised in that: described disk fastens bolt together with wheel hub assembling by interior hexagonal, described disk is additionally provided with fine setting connecting hole, is used for finely tuning disk。
3. vehicle wheel forces transmission function test device under a kind of free state according to claim 1, it is characterised in that: described core wheel accelerometer is 3-axis acceleration sensor。
4. vehicle wheel forces transmission function test device under a kind of free state according to claim 1, it is characterised in that: described tire top accelerometer is 3-axis acceleration sensor。
5. vehicle wheel forces transmission function test device under a kind of free state according to claim 1, it is characterized in that: described core wheel accelerometer is arranged on the eccentric face of eccentric boss, and the geometric center of core wheel accelerometer is coaxial with the center of circle of described disk, tire top accelerometer is positioned at vehicle tyre top and periderm tangency location。
6. vehicle wheel forces transmission function test device under a kind of free state according to claim 1, it is characterised in that: described core wheel accelerometer is bonding with described eccentric boss by adhesive glue。
7. vehicle wheel forces transmission function test device under a kind of free state according to claim 1, it is characterised in that: described tire top accelerometer is bonding with described eccentric boss by adhesive glue。
8. vehicle wheel forces transmission function test device under a kind of free state according to claim 1, it is characterised in that: it is power hammer that described power triggers device。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620071983.2U CN205333326U (en) | 2016-01-25 | 2016-01-25 | Wheel force transfer function testing device in free state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620071983.2U CN205333326U (en) | 2016-01-25 | 2016-01-25 | Wheel force transfer function testing device in free state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205333326U true CN205333326U (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620071983.2U Expired - Fee Related CN205333326U (en) | 2016-01-25 | 2016-01-25 | Wheel force transfer function testing device in free state |
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| Country | Link |
|---|---|
| CN (1) | CN205333326U (en) |
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2016
- 2016-01-25 CN CN201620071983.2U patent/CN205333326U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170517 Address after: 300462 development zones of Tianjin Binhai New Area West of the new five Street No. 19 rooms Patentee after: Bari (Tianjin) Automotive Engineering Research Institute Co. Ltd. Address before: 300000 Tianjin city Dongli District Tianshan Road intersection Cheng linzhuan (Cheng linzhuan Road) Patentee before: China Automotive Technology Research Center |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20210125 |