CN102445300A - Dynamic grounding pressure test device - Google Patents
Dynamic grounding pressure test device Download PDFInfo
- Publication number
- CN102445300A CN102445300A CN2011103029900A CN201110302990A CN102445300A CN 102445300 A CN102445300 A CN 102445300A CN 2011103029900 A CN2011103029900 A CN 2011103029900A CN 201110302990 A CN201110302990 A CN 201110302990A CN 102445300 A CN102445300 A CN 102445300A
- Authority
- CN
- China
- Prior art keywords
- pressure
- ball
- universal ball
- piezoelectric
- tire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 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
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- 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
- 238000005096 rolling process Methods 0.000 abstract description 8
- 230000003068 static effect Effects 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 19
- 238000005259 measurement Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 5
- 230000006399 behavior Effects 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Landscapes
- Tires In General (AREA)
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 and carry out the device of real time dynamic measurement tyre contact pressure.
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 confirm 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.Existing theoretical analysis method (comprising Elasticity method, finite element method etc.) is though obtained certain predicting the outcome, and it need compare with actual result and analyze and proofread and correct.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 to 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 was with this method measurement, the tire rotating shaft was fixed, and the acquisition of measurement data is by dragging test slab lentamente to let tire realize through the force transducer that is installed on the flat board; And measure dull and stereotyped moving and under less than the slow condition of 1km/h, to carry out, had a strong impact on the authenticity of simulation tire road traveling.In addition, if think the ground pressure under the drawings high-speed motion state, then must sensor be installed on the drum tester and carry out; And; In the method that the dynamic ground pressure of existing drawings 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 function that tyre contact pressure distributes under measure static 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 present invention provides a kind of dynamic ground pressure proving installation; This proving installation not only can distribute by the static or dynamic ground pressure of drawings; And this measurement mechanism do not limit the rotating speed and the rolling plane of tire, makes simulated environment truer, and measurement data is more accurate.
For solving above technical barrier, the technical scheme that the present invention adopted is: a kind of dynamic ground pressure proving installation, mainly form by test platform, piezoelectric pressure indicator, data acquisition and disposal system and universal ball seat; Offer the shoulder hole of some at the test platform upper surface, shoulder hole is array way to be arranged, and is 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 each piezoelectric pressure indicator is equipped with a universal ball seat equally, and universal ball seat is made up of multi-directional ball, ball, fixed cover and pedestal; The top of pedestal is the semisphere raceway, is furnished with the ball of some same radius in raceway face, on the formed surface of ball, places a multi-directional 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, and the upper end of fixed cover is a flat board, and 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, and 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, and 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.According to measuring accuracy needs adjustment dynamometry unit interval distance,, also can arrange the dynamometry unit of 50x50 such as the dynamometry unit that in the tire ground area, can arrange the 10x10 square formation.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 the measurement needs; And the rotation of tire drives the multi-directional ball rotation simultaneously; And be delivered to a dynamic ground pressure on the pressure transducer through universal ball seat, thereby through data acquisition and disposal system acquisition measurement data.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.Can the test platform of a kind of dynamic ground pressure proving installation of the present invention directly be placed on the test road surface, automobile high-speed crosses, through the data acquisition and the actual ground pressure distribution of disposal system acquisition of apparatus of the present invention.Also can the test platform of a kind of dynamic ground pressure proving installation of the present invention be placed on other tyre performance proving installations; Other tyre performance proving installations provide the negative buoyancy and the velocity of rotation of tire; The simulation rotating effect, the ground pressure that corresponding operating mode is provided by the 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 a 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 through 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 through 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 in rotating process, can simulate the tire actual condition like sideslip, turning etc. with the relative position of test platform, thereby realizes the measurement that dynamic ground pressure distributes; 2) measurement method that distributes of conventional tire ground pressure all is to let tire keep fixed and lean on drag flat board or drive rotary drum realization kinetic measurement; And this dynamic ground pressure proving installation is that tire is rotated with any rotating speed; And test platform is fixed, 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 the rolling friction with multi-directional ball constantly; Broken through and to have made the limitation of the rotational plane of tire in the conventional test methodologies perpendicular to the road surface; 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 needs certain length; Orientation to satisfy tire is rolled, 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 rotating with the drum tester measurement high speed; 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 form by test platform 1, piezoelectric pressure indicator 8, data acquisition and disposal system and universal ball seat 2; 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 2ly, utilize the 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 made up of multi-directional ball 4, ball 5, fixed cover 3 and pedestal 6, and the top of pedestal 6 is the semisphere raceway, is furnished with the ball 5 of some same radius in raceway face; On ball 5 formed surfaces, place a multi-directional ball 4; The outside of pedestal 6 is wrapped with a fixed cover 3, and the upper end of fixed cover 3 is a flat board, and 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 are fixed on the piezoelectric pressure indicator 8 universal ball seat 2, 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, and tire can rotate with any rotating speed according to the measurement needs, and the rotation of tire drives multi-directional ball 4 rotations simultaneously; And be delivered to the ball 5 of dynamic ground pressure on the piezoelectric pressure indicator 8, thereby obtain measurement data through universal ball seat 2.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. a dynamic ground pressure proving installation is characterized in that: mainly be made up of test platform, piezoelectric pressure indicator, data acquisition and disposal system and universal ball seat, 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 each piezoelectric pressure indicator is equipped with a universal ball seat equally; Universal ball seat is made up of multi-directional ball, ball, fixed cover and pedestal; The top of pedestal is the semisphere raceway, is furnished with the ball of some same radius in raceway face, on the formed surface of ball, places a multi-directional 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, and the upper end of fixed cover is a flat board, and 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 pressure transducer, 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 through the adhesive bonding that is 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 through 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102445300A true CN102445300A (en) | 2012-05-09 |
| CN102445300B CN102445300B (en) | 2013-08-14 |
Family
ID=46008013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110302990 Expired - Fee Related CN102445300B (en) | 2011-10-09 | 2011-10-09 | Dynamic grounding pressure test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102445300B (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743579A (en) * | 2014-01-02 | 2014-04-23 | 中国人民解放军63908部队 | Caterpillar track ground pressure simulation test device |
| CN104132763A (en) * | 2014-08-14 | 2014-11-05 | 哈尔滨工业大学 | Planet detection vehicle wheel having macro and micro force testing function and stress testing method |
| CN104696338A (en) * | 2015-01-15 | 2015-06-10 | 广州中国科学院工业技术研究院 | Fastening bolt with force transducers arranged inside |
| 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 |
| CN108412994A (en) * | 2018-03-12 | 2018-08-17 | 合肥托卡拉图科技有限公司 | Quantitative rotation Linear feed mechanism |
| CN108489654A (en) * | 2018-05-28 | 2018-09-04 | 西北工业大学 | A kind of spin friction weldering frictional interface part positive pressure force measuring device and measurement method |
| CN109641491A (en) * | 2016-07-29 | 2019-04-16 | 株式会社普利司通 | Sensor housing |
| CN109717171A (en) * | 2019-01-22 | 2019-05-07 | 甘肃华荣旺达科技工程有限公司 | A kind of agricultural pesticide spraying machine with spray frame damping |
| CN110206552A (en) * | 2019-06-21 | 2019-09-06 | 中国电建集团成都勘测设计研究院有限公司 | Pressure sensitive system for rock tunnel(ling) machine shield body |
| 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 |
| CN112113694A (en) * | 2020-09-11 | 2020-12-22 | 太原科技大学 | Dynamic measuring device for specific grounding pressure of crawler device |
| 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 |
| US10942078B2 (en) | 2019-05-31 | 2021-03-09 | TYCKit GmbH | Measurement of pressure in pressure-filled containers with flexible walls, in particular tires |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0695935A1 (en) * | 1994-06-09 | 1996-02-07 | PIRELLI COORDINAMENTO PNEUMATICI S.p.A. | Device for detecting the distribution of a specific pressure in the groundcontacting area of a motor-vehicle tyre, and detection method carried out thereby |
| CN1260873A (en) * | 1997-05-14 | 2000-07-19 | 斯耐普昂仪器有限公司 | Tyre pressure determination |
| EP1505379A1 (en) * | 2003-08-04 | 2005-02-09 | 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 |
| KR20110105237A (en) * | 2010-03-18 | 2011-09-26 | 장철환 | Active contact pressure measuring device of tire |
-
2011
- 2011-10-09 CN CN 201110302990 patent/CN102445300B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0695935A1 (en) * | 1994-06-09 | 1996-02-07 | PIRELLI COORDINAMENTO PNEUMATICI S.p.A. | Device for detecting the distribution of a specific pressure in the groundcontacting area of a motor-vehicle tyre, and detection method carried out thereby |
| CN1260873A (en) * | 1997-05-14 | 2000-07-19 | 斯耐普昂仪器有限公司 | Tyre pressure determination |
| EP1505379A1 (en) * | 2003-08-04 | 2005-02-09 | 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 |
| KR20110105237A (en) * | 2010-03-18 | 2011-09-26 | 장철환 | Active contact pressure measuring device of tire |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103743579A (en) * | 2014-01-02 | 2014-04-23 | 中国人民解放军63908部队 | Caterpillar track ground pressure simulation test device |
| CN104132763A (en) * | 2014-08-14 | 2014-11-05 | 哈尔滨工业大学 | Planet detection vehicle wheel having macro and micro force testing function and stress testing method |
| CN104696338A (en) * | 2015-01-15 | 2015-06-10 | 广州中国科学院工业技术研究院 | Fastening bolt with force transducers arranged inside |
| CN109641491A (en) * | 2016-07-29 | 2019-04-16 | 株式会社普利司通 | Sensor housing |
| 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 |
| CN108412994B (en) * | 2018-03-12 | 2020-09-29 | 嵊州市旭辉建材有限公司 | Linear feeding mechanism for quantitative rotation |
| CN108412994A (en) * | 2018-03-12 | 2018-08-17 | 合肥托卡拉图科技有限公司 | Quantitative rotation Linear feed mechanism |
| CN108489654A (en) * | 2018-05-28 | 2018-09-04 | 西北工业大学 | A kind of spin friction weldering frictional interface part positive pressure force measuring device and measurement method |
| CN109717171A (en) * | 2019-01-22 | 2019-05-07 | 甘肃华荣旺达科技工程有限公司 | A kind of agricultural pesticide spraying machine with spray frame damping |
| US10942078B2 (en) | 2019-05-31 | 2021-03-09 | TYCKit GmbH | Measurement of pressure in pressure-filled containers with flexible walls, in particular tires |
| CN110206552A (en) * | 2019-06-21 | 2019-09-06 | 中国电建集团成都勘测设计研究院有限公司 | Pressure sensitive system for rock tunnel(ling) machine shield body |
| 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 |
| CN112113694A (en) * | 2020-09-11 | 2020-12-22 | 太原科技大学 | Dynamic measuring device for specific grounding pressure of crawler device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102445300B (en) | 2013-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102445300B (en) | Dynamic grounding pressure test device | |
| CN102426085B (en) | Device and method for testing contact rigidity of spherical surface-rotary surface combining surface | |
| US8333116B2 (en) | Inspection vehicle for a turbine disk | |
| CN104760039B (en) | Parallel connection platform vibration detection based on laser displacement sensor controls apparatus and method | |
| CN102175391B (en) | Device and method for measuring gravity center position of infrared guidance missile guide head | |
| CN110954257B (en) | Crank with force applying direct measuring device | |
| JP2006226778A (en) | Ground pressure distribution measuring device of tire | |
| WO2002055982A1 (en) | System for determining the dynamic orientation of a vehicle wheel plane | |
| CN101949776A (en) | Six-degree-of-freedom tire tester | |
| CN103673992B (en) | Testing method for simulating lunar-dust dust rising | |
| CN102854332A (en) | Device and method for measuring rotational speed on basis of electrostatic sensor array and data fusion | |
| JP2010048816A (en) | Method for dynamic measurement of position and orientation of wheel | |
| CN204330810U (en) | A kind of automobile speed analogue means | |
| CN106908254A (en) | Tire vibration experimental rig | |
| CN103575933B (en) | Vibration type engine speed measuring instrument calibrating installation and method | |
| CN201237506Y (en) | Load position information collection apparatus for bridge structure influence line | |
| CN201780212U (en) | Six-degree-of-freedom tire testing machine | |
| CN108267246A (en) | A kind of dynamic Tai Yu roads ground connection stress measurement device and method | |
| CN206446447U (en) | Display device for mounting on vehicle | |
| KR101294085B1 (en) | Brake disk behavior detection system | |
| CN205280381U (en) | Light -duty unmanned car parameter testing platform | |
| CN212873807U (en) | Circular motion demonstration instrument | |
| CN203519146U (en) | Camera shutter micro-vibration physical simulation test processing apparatus | |
| CN201464091U (en) | Acting force measuring device for exercise equipment | |
| CN202854160U (en) | Electrostatic sensor array and data integration rotation speed measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 |