CN102445300B - Dynamic grounding pressure test device - Google Patents
Dynamic grounding pressure test device Download PDFInfo
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- CN102445300B CN102445300B CN 201110302990 CN201110302990A CN102445300B CN 102445300 B CN102445300 B CN 102445300B CN 201110302990 CN201110302990 CN 201110302990 CN 201110302990 A CN201110302990 A CN 201110302990A CN 102445300 B CN102445300 B CN 102445300B
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- ball
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- universal ball
- pressure indicator
- pressure
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- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 238000009434 installation Methods 0.000 claims description 25
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 9
- 238000004026 adhesive bonding Methods 0.000 claims description 2
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- 239000010453 quartz Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
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- 230000033001 locomotion Effects 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
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Abstract
The invention provides a dynamic grounding pressure test device for a tyre. The dynamic grounding pressure mainly comprises a test platform, piezoelectric pressure sensors, a data acquiring and processing system and universal ball seats. A certain amount of stepped holes are formed on the upper surface of the test platform and are arranged in an array manner, the piezoelectric pressure sensors are arranged in the stepped holes, a universal ball seat is arranged on the upper part of a shell of each of the pressure sensors and consists of a universal ball, a ball, a fixed sleeve and a base, a flat plate is arranged at the upper end of each fixed sleeve, a round hole is formed at the center of each flat plate, the diameter of each round hole is smaller than that of each universal ball, and an extension part at the lower end of each fixed sleeve is in interference fit with the shell of the corresponding pressure sensor to make the corresponding universal ball seat fixed on the correspoding pressure sensor. The dynamic grounding pressure test device for the tyre can be used for measuring static or dynamic grounding pressure distribution of the tyre, does not limit the rotational speed and a rolling plane of the tyre, and makes a simulation environment more authentic and measuring data more accurate.
Description
Technical field
The present invention relates to a kind of tyre contact pressure measurement mechanism, particularly can distribute to tyre contact pressure and carry out the device of real time dynamic measurement.
Background technology
Required power such as the load-carrying of tire, traction, braking and manipulation all occur on the pocket that tire contacts with the road surface, and the mechanical state of this piece ground area has influence on the various driving behaviors of vehicle.Want to determine contact conditions best between tire and the road surface, the reduction tread wear improves vehicle handling stability, the performance of evaluation tire construction and decorative pattern, and the ground pressure that just must study tire distributes.Though obtained certain predicting the outcome, it need be analyzed and proofread and correct existing theoretical analysis method (comprising Elasticity method, finite element method etc.) with actual result.The method of the static ground pressure distribution of actual measurement tire at present has: pressure plare method, pressure transducer method, presser sensor embrane method and optical absorption method.In these four kinds of methods, have only the pressure transducer method to measure the dynamic ground pressure of tire, this has more reference value than the test that tyre contact pressure under the quiescent load distributes, but when its limitation is with this method measurement, the tire rotating shaft maintains static, the acquisition of measurement data is by dragging test slab lentamente to allow tire realize through the power sensor that is installed on the flat board, and measure dull and stereotyped movement and must under less than the slow condition of 1km/h, carry out, had a strong impact on the authenticity of simulation tire road traveling.In addition, if want to measure the ground pressure under the tire high-speed motion state, then sensor must be installed on the drum tester and carry out, and, in the method that existing measuring wheel movement of the foetus attitude ground pressure distributes, the plane of rotation of tire can only be and perpendicular single of measurement face, and in the reality, tire must satisfy requirements such as turning, sideslip in the process of moving, and this just makes the tyre rotation face not keep vertical with the road surface constantly.
Summary of the invention
All can not possess the function of measuring tyre contact pressure distribution under static state and the dynamic pressure and the defective that tire can only rotate in measuring process simultaneously for overcoming existing tyre contact pressure distribution measurement method in single plane, the invention provides a kind of dynamic ground pressure proving installation, this proving installation not only can be measured the static or dynamically ground pressure distribution of tire, and this measurement mechanism does not limit rotating speed and the rolling plane of tire, make simulated environment truer, measurement data is more accurate.
For solving above technical barrier, the technical solution adopted in the present invention is: a kind of dynamic ground pressure proving installation, mainly be by test platform, piezoelectric pressure indicator, data acquisition and disposal system and universal ball seat are formed, offer the shoulder hole of some at the test platform upper surface, shoulder hole is array way and arranges, be mounted with a pressure transducer in each shoulder hole, utilize the screw head of nut and pressure transducer bottom that sensor is fixed on the test platform, the housing top of same each piezoelectric pressure indicator is equipped with a universal ball seat, universal ball seat is by multi-directional ball, ball, fixed cover and pedestal are formed, the top of pedestal is the semisphere raceway, be furnished with the ball of some same radius in raceway face, place a multi-directional ball on the formed surface of ball, the radius of multi-directional ball is the poor of raceway radius and ball diameter, the outside of pedestal is wrapped with a fixed cover, the upper end of fixed cover is a flat board, dull and stereotyped center has a circular hole, Circularhole diameter is less than the multi-directional ball diameter, the effect of fixed cover is the translation freedoms of restriction multi-directional ball three directions in the space, in addition, the lower end extension of fixed cover and the shell interference fit of pressure transducer, thereby universal ball seat is fixed on the pressure transducer, each piezoelectric pressure indicator and a universal ball seat are formed a dynamometry unit, the measuring-signal real-time Transmission of each dynamometry unit is to data acquisition and disposal system, and then the pressure distribution in the acquisition tire ground connection scope.Adjust dynamometry unit interval distance according to the measuring accuracy needs, such as the dynamometry unit that in the tire ground area, can arrange the 10x10 square formation, also can arrange the dynamometry unit of 50x50.Dynamically the method for testing of ground pressure proving installation is: will take turns any rotating direction of tyre bead and be positioned on the test platform that is furnished with a kind of dynamic ground pressure proving installation of the present invention with certain deflection, the multi-directional ball of tire tread and dynamometry unit keeps in touch, tire can rotate with any rotating speed according to measuring needs, and the rotation of tire drives the multi-directional ball rotation simultaneously, and a dynamic ground pressure is delivered on the pressure transducer by universal ball seat, thereby obtain measurement data by data acquisition and disposal system.In rotation process, the multi-directional ball of tire and bottom is keeping pure rolling relatively constantly, and test platform then keeps stationary state; If the response frequency of pressure transducer is enough high, just can disposablely measure the ground pressure value of all points that make progress in tire week; When tire is followed when turning or breakking away, because many rotational freedoms characteristic of multi-directional ball, still can keep the relative rolling condition with tyre surface, thereby the ground pressure that also can measure tire distributes under rotary state.The test platform of a kind of dynamic ground pressure proving installation of the present invention directly can be placed on the test road surface, automobile high-speed crosses, by data acquisition and the actual ground pressure distribution of disposal system acquisition of apparatus of the present invention.Also the test platform of a kind of dynamic ground pressure proving installation of the present invention can be placed on other tyre performance proving installations, other tyre performance proving installations provide negative buoyancy and the velocity of rotation of tire, the simulation rotating effect, the ground pressure that provides corresponding operating mode by data acquisition and the disposal system of a kind of dynamic ground pressure proving installation of the present invention distributes.
A kind of dynamic ground pressure proving installation of the present invention, its piezoelectric element that constitutes piezoelectric pressure indicator can be piezoelectric ceramics, can be other force sensitive element also, such as single crystal quartz.
A kind of dynamic ground pressure proving installation of the present invention, the interference fit of its universal ball seat and piezoelectric pressure indicator also can be substituted by other fit system, such as the mode by the adhesive bonding.
A kind of dynamic ground pressure proving installation of the present invention can or reduce the slab-thickness of fixed cover or adopt the screw thread up-down mode to regulate multi-directional ball and expose volume by increase.
The invention has the beneficial effects as follows: 1) because the multi-directional ball in the dynamic ground pressure proving installation has rotational freedom at any angle, it is rolling friction with contacting of tire tread, this makes tire can simulate the tire actual condition as sideslip, turning etc. with the relative position of test platform in rotating process, thereby realizes the measurement that dynamic ground pressure distributes; 2) measurement method that distributes of conventional tire ground pressure all is to allow tire keep maintaining static and by dragging flat board or driving rotary drum realization kinetic measurement, and this dynamic ground pressure proving installation is that tire is rotated with any rotating speed, and test platform maintains static, and simulated environment is truer; 3) multi-directional ball is free to rotate in the semisphere raceway, can satisfy tire and in rotational plane arbitrarily, keep rolling friction with multi-directional ball constantly, broken through and to have made the rotational plane of tire perpendicular to the limitation on road surface in the conventional test methodologies, realized driving behaviors such as sideslip, turning in the tire reality, made more closing to reality of modular ring border; 4) in the dynamic ground pressure measurement method of traditional tire, test platform need have certain length, roll with the orientation that satisfies tire, and the test platform in this dynamic ground pressure proving installation only needs a pocket to get final product with the ground connection needs that satisfy tire; When 5) tyre contact pressure distributes under with drum tester measurement high-speed rotation, cycle regular hour that contacted of the pressure transducer on the rotary drum and tyre surface, and this dynamic ground pressure proving installation can satisfy tire and the dynamometry unit keeps in touch constantly, thereby can disposablely measure the ground pressure value of all points that make progress in whole week of tire.
Description of drawings
Fig. 1 is a kind of dynamic ground pressure proving installation test synoptic diagram of the present invention
Fig. 2 is the cross-sectional schematic of the dynamometry unit of a kind of dynamic ground pressure proving installation of the present invention
Among the figure: 1-test platform, 2-universal ball seat, 3-fixed cover, 4-multi-directional ball, 5-ball, 6-pedestal, 7-nut, 8-piezoelectric pressure indicator, 9-tire
Embodiment
Dynamic ground pressure proving installation of the present invention, as shown in Figure 1, mainly be by test platform 1, piezoelectric pressure indicator 8, data acquisition and disposal system and universal ball seat 2 are formed, do not show among data acquisition and the disposal system figure, offer the shoulder hole of some on test platform 1 surface, shoulder hole is array way and arranges, be mounted with a pressure transducer 8 in each shoulder hole, see shown in Figure 2, utilize nut 7 and the screw head of piezoelectric pressure indicator 8 bottoms that piezoelectric pressure indicator 8 is fixed on the test platform 1, the housing top of same each piezoelectric pressure indicator 8 is equipped with a universal ball seat 2, universal ball seat 2 is by multi-directional ball 4, ball 5, fixed cover 3 and pedestal 6 are formed, the top of pedestal 6 is the semisphere raceway, be furnished with the ball 5 of some same radius in raceway face, place a multi-directional ball 4 on ball 5 formed surfaces, the outside of pedestal 6 is wrapped with a fixed cover 3, the upper end of fixed cover 3 is a flat board, dull and stereotyped center has a circular hole, Circularhole diameter is less than the diameter of multi-directional ball 4, the lower end extension of fixed cover 3 and the shell interference fit of piezoelectric pressure indicator 8, universal ball seat 2 is fixed on the piezoelectric pressure indicator 8, and each piezoelectric pressure indicator 8 and a universal ball seat 2 are formed a dynamometry unit.Detected tyre 9 is positioned on the test platform that is furnished with the dynamometry unit along any rotating direction and with certain deflection, the multi-directional ball of tire 9 tyre surfaces and dynamometry unit keeps in touch, log-on data is gathered and disposal system, tire can rotate with any rotating speed according to measuring needs, and the rotation of tire drives multi-directional ball 4 rotations simultaneously, and the ball 5 of dynamic ground pressure by universal ball seat 2 be delivered on the piezoelectric pressure indicator 8, thereby obtain measurement data.In rotation process, tire 9 is constantly keeping pure rolling relatively with the multi-directional ball 4 of bottom, and test platform 1 then keeps stationary state; If the response frequency of piezoelectric pressure indicator 8 is enough high, just can disposablely measure the ground pressure value of all points that make progress in 9 weeks of tire; When tire 9 is followed when turning or breakking away, because many rotational freedoms characteristic of multi-directional ball 4, still can keep the relative rolling condition with tyre surface, thereby the ground pressure that can measure tire 9 equally distributes under rotary state.
Claims (4)
1. dynamic ground pressure proving installation, it is characterized in that: mainly be by test platform, piezoelectric pressure indicator, data acquisition and disposal system and universal ball seat are formed, offer the shoulder hole of some at the test platform upper surface, shoulder hole is array way and arranges, be mounted with a piezoelectric pressure indicator in each shoulder hole, utilize the screw head of nut and piezoelectric pressure indicator bottom that sensor is fixed on the test platform, the housing top of same each piezoelectric pressure indicator is equipped with a universal ball seat, universal ball seat is by multi-directional ball, ball, fixed cover and pedestal are formed, the top of pedestal is the semisphere raceway, be furnished with the ball of some same radius in raceway face, place a multi-directional ball on the formed surface of ball, the radius of multi-directional ball is the poor of raceway radius and ball diameter, the outside of pedestal is wrapped with a fixed cover, the upper end of fixed cover is a flat board, dull and stereotyped center has a circular hole, Circularhole diameter is less than the diameter of multi-directional ball, the lower end extension of fixed cover and the shell interference fit of piezoelectric pressure indicator, each piezoelectric pressure indicator and a universal ball seat are formed a dynamometry unit, and the measuring-signal real-time Transmission of each dynamometry unit is to data acquisition and disposal system.
2. a kind of dynamic ground pressure proving installation according to claim 1 is characterized in that: the piezoelectric element that constitutes piezoelectric pressure indicator is piezoelectric ceramics or single crystal quartz.
3. a kind of dynamic ground pressure proving installation according to claim 1 is characterized in that: the mode by the adhesive bonding of being connected to of universal ball seat and piezoelectric pressure indicator.
4. a kind of dynamic ground pressure proving installation according to claim 1 is characterized in that: the slab-thickness by increasing or reduce fixed cover or adopt the screw thread up-down mode to regulate multi-directional ball to expose volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110302990 CN102445300B (en) | 2011-10-09 | 2011-10-09 | Dynamic grounding pressure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110302990 CN102445300B (en) | 2011-10-09 | 2011-10-09 | Dynamic grounding pressure test device |
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| Publication Number | Publication Date |
|---|---|
| CN102445300A CN102445300A (en) | 2012-05-09 |
| CN102445300B true CN102445300B (en) | 2013-08-14 |
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| CN 201110302990 Expired - Fee Related CN102445300B (en) | 2011-10-09 | 2011-10-09 | Dynamic grounding pressure test device |
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| CN103743579B (en) * | 2014-01-02 | 2016-08-17 | 中国人民解放军63908部队 | A kind of caterpillar track ground pressure simulation test device |
| CN104132763B (en) * | 2014-08-14 | 2016-03-02 | 哈尔滨工业大学 | There is planet detection vehicle wheel and the forces testing method of grand micro object test function |
| CN104696338B (en) * | 2015-01-15 | 2017-08-29 | 广州中国科学院工业技术研究院 | A kind of fastening bolt of built-in load cell |
| JP6783088B2 (en) * | 2016-07-29 | 2020-11-11 | 株式会社ブリヂストン | Sensor case |
| CN106108976A (en) * | 2016-08-30 | 2016-11-16 | 潘超 | A kind of orthopaedics positional punch device |
| CN108132116A (en) * | 2017-12-19 | 2018-06-08 | 西安诺伊传感技术有限公司 | A kind of space-vehicle antenna simulated weightlessness unloading force measuring device and its measuring system |
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| US10942078B2 (en) | 2019-05-31 | 2021-03-09 | TYCKit GmbH | Measurement of pressure in pressure-filled containers with flexible walls, in particular tires |
| CN110206552B (en) * | 2019-06-21 | 2024-04-19 | 中国电建集团成都勘测设计研究院有限公司 | Pressure sensing system for shield body of tunnel boring machine |
| CN112438492A (en) * | 2019-09-04 | 2021-03-05 | 西藏易华路信息技术服务有限公司 | Research and development platform with lifting protection mechanism for electronic communication information technology |
| CN111366290A (en) * | 2020-03-27 | 2020-07-03 | 中国工程物理研究院电子工程研究所 | Hemispherical universal sensitive piezoelectric impact sensor |
| CN112113694B (en) * | 2020-09-11 | 2022-05-20 | 太原科技大学 | Dynamic measuring device for ground pressure ratio of crawler device |
| CN112710483A (en) * | 2021-01-12 | 2021-04-27 | 东风汽车集团股份有限公司 | Testing arrangement of tire dynamic impression |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1270194B (en) * | 1994-06-09 | 1997-04-29 | Pirelli | DEVICE TO DETECT THE DISTRIBUTION OF THE SPECIFIC PRESSURE IN THE FOOTPRINT OF A TIRE FOR VEHICLES AND METHOD OF DETECTION FROM IT IMPLEMENTED |
| GB9709645D0 (en) * | 1997-05-14 | 1997-07-02 | Sun Electric Uk Ltd | Tyre pressure determination |
| US7096736B2 (en) * | 2003-08-04 | 2006-08-29 | The Goodyear Tire & Rubber Company | Passive tire pressure sensor and method |
| JP2006226778A (en) * | 2005-02-16 | 2006-08-31 | Sumitomo Rubber Ind Ltd | Ground pressure distribution measuring device of tire |
| JP2007240392A (en) * | 2006-03-10 | 2007-09-20 | Honda Motor Co Ltd | Ground load estimation device |
| KR101164423B1 (en) * | 2010-03-18 | 2012-07-12 | 장철환 | active contact pressure measuring device of tire |
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2011
- 2011-10-09 CN CN 201110302990 patent/CN102445300B/en not_active Expired - Fee Related
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Granted publication date: 20130814 |