CN107607332B - Novel tire constraint mode test device - Google Patents
Novel tire constraint mode test device Download PDFInfo
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- CN107607332B CN107607332B CN201710844277.6A CN201710844277A CN107607332B CN 107607332 B CN107607332 B CN 107607332B CN 201710844277 A CN201710844277 A CN 201710844277A CN 107607332 B CN107607332 B CN 107607332B
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 230000001133 acceleration Effects 0.000 claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 239000011324 bead Substances 0.000 claims description 7
- 238000013016 damping Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The invention discloses a novel tire constraint mode testing device which comprises a rack provided with a tire, a jack for applying load to the tire, a rigid rope for fixing the tire and transmitting the load applied by the jack to the tire, a force sensor for monitoring the stress of the tire and an acceleration sensor for testing vibration mode signals of the tire, wherein the jack is fixedly arranged on the rack, and the extending direction of the central axis of the tire is perpendicular to the stress direction of the tire. The novel tire constraint mode testing device is simple in structure and convenient to use, can accurately simulate the stress condition of the tire in a real vehicle state, and can test the frequency, vibration mode and damping of the tire in a constraint mode.
Description
Technical Field
The invention relates to the technical field of NVH of automobiles, in particular to a novel tire constraint mode testing device.
Background
The vehicle is forced against the road surface by the only component, the tire, and therefore the mechanical properties of the tire are one of the important mechanical properties that determine or influence the dynamics of the vehicle. With the increasing speed of modern vehicles, active safety, noise, driving dynamics and riding comfort of the vehicle occupy increasingly important positions in vehicle performance, tire noise has become one of the main sources of environmental noise, and reducing vibration of tires to reduce noise and improve vehicle driving performance has become an urgent task at present. The inherent characteristics of the tire directly influence the vibration and noise of the tire and the vehicle, so that the research on the vibration characteristics of the tire has important significance on the reasonable design of the tire and is also beneficial to improving the quality of the tire. However, in the prior art, the tire is limited by space on a real vehicle, so that a sensor cannot be installed for modal testing; meanwhile, in the existing modal testing device, the problem that a force hammer cannot strike certain directions of a tire during modal hammering exists.
Disclosure of Invention
The invention aims to provide a novel tire constraint mode testing device aiming at the problems in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a novel tire constraint mode test device, is including setting up the rack of tire, be used for to the jack of tire applys the load, be used for fixing the tire and with the load that the jack applyed is transmitted rigid rope on the tire, be used for monitoring the tire atress force sensor and be used for testing the acceleration transducer of tire vibration mode signal, the jack is fixed to be set up on the rack, the central axis of tire extend the direction with the atress direction of tire is mutually perpendicular.
Preferably, the force sensor is fixedly arranged on the rack, the testing device further comprises a tray, the force sensor is supported below the tray, and the tire is arranged on the tray.
Further, a clamping groove matched with the tire is formed in the tray, and the tire is clamped in the clamping groove.
Further, the force sensors are four, and the four force sensors are respectively arranged at four corners of the tray.
Preferably, the center of the tire is provided with a shaft hole, and the rigid rope passes through the shaft hole to connect the tire and the jack.
Preferably, one end of the jack is fixed to the stand, and the rigid rope is fixed to the other end of the jack.
Preferably, the rack is provided with a working table surface, the tire is positioned above the working table surface, the jack is positioned below the working table surface, the top of the jack is fixed on the table surface, the rigid rope is fixed at the bottom of the jack, and through holes for the rigid rope to pass through are formed in the working table surfaces on two sides of the tire.
Preferably, the jack is in a minimum stroke state when the rigid line is in tension but no pretension is generated.
Preferably, the tire comprises a hub and a bead arranged on the hub, a plurality of acceleration sensors are arranged, and the acceleration sensors are respectively arranged on the outer surfaces of the hub and the bead.
Preferably, the testing device further comprises a display arranged on the bench for displaying the stress value of the tire.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the novel tire constraint mode testing device is simple in structure and convenient to use, can accurately simulate the stress condition of the tire in a real vehicle state, and can test the frequency, vibration mode and damping of the tire in a constraint mode.
Drawings
FIG. 1 is a perspective view of a novel tire restraint modality testing arrangement of the present invention;
FIG. 2 is a front view of the novel tire restraint modality test assembly of the present invention;
FIG. 3 is a side view of the novel tire restraint modality test arrangement of the present invention;
fig. 4 is a top view of the novel tire restraint modality test arrangement of the present invention.
Wherein: 1. a stand; 11. a bracket; 12. a work table; 2. a jack; 3. a rigid rope; 4. a force sensor; 5. an acceleration sensor; 6. a tray; 61. a clamping groove; 7. a display; 100. a tire; 101. and the shaft hole.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
As shown in fig. 1-4, the novel tire constraint mode testing device comprises a rack 1, a jack 2, a rigid rope 3, a force sensor 4 and an acceleration sensor 5.
The stand 1 is used for placing a tire 100 for test, and the stand 1 includes a bracket 11 and a table top 12 fixedly provided on top of the bracket 11.
The jack 2 is used for applying load to the tire 100, the jack 2 is provided with a handle 21, and the handle 21 is operated to apply load to the tire 100. The rigid rope 3 is used for fixing the tire 100 and transmitting the load applied by the jack 2 from the rigid rope 3 to the tire 100, and the direction of the load borne by the tire 100 is perpendicular to the extending direction of the central axis of the tire 100.
Specifically, the center of the tire 100 is provided with a shaft hole 101, and the two ends of the rigid rope 3 are fixed on the jack 2 after the rigid rope 3 passes through the shaft hole 101 to be tensioned, so that the tire 100 can be fixed through the rigid rope 3, and in the state, the pretightening force is not generated on the rigid rope 3, and the jack 2 is positioned at the minimum stroke position. When the handle 21 of the jack 2 is operated, the stroke of the jack 2 is increased and the rigid cord 3 is tensioned, thereby applying pressure to the tire 100.
The jack 2 is fixed to the table top 12. In this embodiment, the jack 2 is located below the table top 12, the top of the jack is fixedly arranged on the table top 12, and the bottom of the jack is fixedly connected with the rigid rope 3.
The force sensor 4 is used for testing the stress condition of the tire 100 after the jack 2 applies load, in this embodiment, the force sensor 4 is fixedly arranged on the working table 12 and is located above the working table 12, the novel tire constraint mode testing device further comprises a tray 6, the force sensor 4 is supported below the tray 6, and the tire 100 is arranged on the tray 6.
In this embodiment, the force sensors 4 are four, the four force sensors 4 are respectively located at four corners of the tray 6, and the sum of the forces measured by the four force sensors 4 is the magnitude of the force borne by the tire 100.
The novel tire restraint modality test device further comprises a display 7 for displaying the magnitude of the force experienced by the tire 100, the display 7 being fixedly disposed on the countertop 12.
A clamping groove 61 matched with the tire 100 is arranged in the middle of the tray 6, and the tire 100 is clamped in the clamping groove 61, so that the phenomenon that the tire 100 is laterally deviated in the tensioning process of the rigid rope 3 can be prevented.
A through hole is provided on the table top 12 at both sides of the tire 100, respectively, for passing the rigid string 3 therethrough, and the through hole can also position the rigid string 3.
The acceleration sensor 5 is used for testing the modal signal of the tire vibration, in this embodiment, the acceleration sensor 5 adopts a three-way acceleration sensor, the three-way acceleration sensor is provided with a plurality of, the tire 100 includes a hub and a tire bead, and the plurality of three-way acceleration sensors are respectively arranged on the outer surfaces of the hub and the tire bead. When the force applied to the tire 100 is the same as the force applied to the tire 100 in actual use, the mode shape of the tire 100 can be obtained by the acceleration sensor 5 by striking the tire 100 at a specified position with a force hammer.
The specific process for testing the mode shape of the tire by using the novel tire constraint mode testing device comprises the following steps:
(1) The force sensor 4 is arranged on the working table 12, the tray 6 is arranged on the force sensor 4, then the tire 100 is clamped in the clamping groove 61 of the tray 6, the top of the jack 2 is fixed below the working table 12, the rigid rope 3 passes through the shaft hole of the tire 100 and is then fixed at the bottom of the jack 2, at the moment, the rigid rope 3 is in a tensioned state but does not generate pretightening force, and the jack 2 is in a minimum stroke position;
(2) Operating the handle 21 of the jack 2, pre-tightening the rigid rope 3 so as to have a downward tension on the tire 100, monitoring the tension value by the force sensor 4 and displaying the tension value through the display 7, and continuously operating the handle 21 to load the tire 100 until the tension born by the tire 100 is equal to that in a real vehicle state;
(3) The jack 2 maintains a final loading state, and after the acceleration sensor 5 is arranged on the outer surface of the hub and the tire bead, a force hammer is used for knocking any appointed position of the tire 100, so that the mode shape of the tire 100 can be obtained through the acceleration sensor 5.
The novel tire constraint mode testing device can accurately simulate the stressed size of the tire 100 in a real vehicle state, can ensure the mode accuracy of the tire 100 in the test constraint state, solves the problem that the mode of the tire 100 cannot be tested on the real vehicle due to space limitation, and can provide important basis for the development of the tire 100 in the earlier stage and the matching of the whole vehicle.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (4)
1. A tire restraint modality test device, characterized in that: the device comprises a rack provided with a tire, a jack for applying load to the tire, a rigid rope for fixing the tire and transmitting the load applied by the jack to the tire, a force sensor for monitoring the stress of the tire and an acceleration sensor for testing vibration mode signals of the tire, wherein the jack is fixedly arranged on the rack, the extending direction of the central axis of the tire is perpendicular to the stress direction of the tire, the rack is provided with a working table, the tire is positioned above the working table, the jack is positioned below the working table, the top of the jack is fixedly arranged on the table, the rigid rope is fixedly arranged at the bottom of the jack, through holes for the rigid rope to pass through are formed in the working tables on two sides of the tire, the force sensor is fixedly arranged on the rack, the force sensor is supported below the tray, the tire is arranged on the tray, and the testing device further comprises a display for displaying the stress value of the tire; the center of the tire is provided with a shaft hole, the rigid rope penetrates through the shaft hole to connect the tire with the jack, one end part of the jack is fixed on the rack, the rigid rope is fixed at the other end part of the jack, and the jack is in a minimum stroke state when the rigid rope is in a tensioning state but does not generate pretightening force.
2. The tire restraint modality testing device of claim 1, wherein: the tray is provided with a clamping groove matched with the tire, and the tire is clamped in the clamping groove.
3. The tire restraint modality testing device of claim 1, wherein: the four force sensors are respectively arranged at four corners of the tray.
4. The tire restraint modality testing device of claim 1, wherein: the tire comprises a hub and a tire bead arranged on the hub, a plurality of acceleration sensors are arranged, and the acceleration sensors are respectively arranged on the outer surfaces of the hub and the tire bead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710844277.6A CN107607332B (en) | 2017-09-19 | 2017-09-19 | Novel tire constraint mode test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710844277.6A CN107607332B (en) | 2017-09-19 | 2017-09-19 | Novel tire constraint mode test device |
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| Publication Number | Publication Date |
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| CN107607332A CN107607332A (en) | 2018-01-19 |
| CN107607332B true CN107607332B (en) | 2024-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710844277.6A Active CN107607332B (en) | 2017-09-19 | 2017-09-19 | Novel tire constraint mode test device |
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| CN (1) | CN107607332B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916640A (en) * | 2019-03-29 | 2019-06-21 | 重庆长安汽车股份有限公司 | A kind of automobile tire operational modal test device |
| CN113607434B (en) * | 2021-08-04 | 2024-03-01 | 厦门威迪思汽车设计服务有限公司 | Tire dynamic and modal testing apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675312A (en) * | 2016-01-25 | 2016-06-15 | 中国汽车技术研究中心 | Wheel force transfer function testing method and device under simulated whole vehicle state |
| CN207300595U (en) * | 2017-09-19 | 2018-05-01 | 清华大学苏州汽车研究院（相城） | A kind of novel tire Constrained mode test device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0735653A (en) * | 1993-06-25 | 1995-02-07 | Bridgestone Corp | Apparatus for testing running performance of tire |
| US6089083A (en) * | 1997-08-22 | 2000-07-18 | Curtis; John Michael | Tire inspection and preparation device |
| JP2003004597A (en) * | 2001-06-20 | 2003-01-08 | Kokusai Keisokki Kk | Uniformity of wheeled tyre and/or dynamic balancing test device |
| CN102156035B (en) * | 2011-03-24 | 2012-09-05 | 西安交通大学 | Turbine blade vibration characteristic testing and measuring device with shroud damping block and blade root wedged damping block |
| CN102680264B (en) * | 2012-05-23 | 2014-04-30 | 浙江大学 | Wind load testing device and method of vehicle-mounted mast lifting system |
| RU130706U1 (en) * | 2013-01-16 | 2013-07-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Нижегородский государственный технический университет им. Р.Е. Алексеева" НГТУ | STAND FOR DETERMINING STATIC CHARACTERISTICS OF TIRES OF WHEELED VEHICLES |
| JP5940041B2 (en) * | 2013-11-07 | 2016-06-29 | 株式会社神戸製鋼所 | Tire testing machine calibration apparatus and tire testing machine calibration method |
| CN205642774U (en) * | 2016-04-19 | 2016-10-12 | 中国石油天然气股份有限公司 | Vibration test simulation device for drilling machine derrick and base system |
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- 2017-09-19 CN CN201710844277.6A patent/CN107607332B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675312A (en) * | 2016-01-25 | 2016-06-15 | 中国汽车技术研究中心 | Wheel force transfer function testing method and device under simulated whole vehicle state |
| CN207300595U (en) * | 2017-09-19 | 2018-05-01 | 清华大学苏州汽车研究院（相城） | A kind of novel tire Constrained mode test device |
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| CN107607332A (en) | 2018-01-19 |
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