CN210803243U - Device for measuring dynamic friction performance of tire surface - Google Patents
Device for measuring dynamic friction performance of tire surface Download PDFInfo
- Publication number
- CN210803243U CN210803243U CN201921656128.8U CN201921656128U CN210803243U CN 210803243 U CN210803243 U CN 210803243U CN 201921656128 U CN201921656128 U CN 201921656128U CN 210803243 U CN210803243 U CN 210803243U
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- tire
- measuring
- pressure sensing
- sensing device
- dynamic friction
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Abstract
The utility model discloses a device for measuring tire surface kinetic friction performance, including conveying part and measuring part, conveying part is used for conveying the vertical tire that awaits measuring of placing, measuring part at least including set up in conveying part transmission line top pressure sensing device, pressure sensing part with the tire that awaits measuring sets up relatively, pressure sensing device signal connection is in the computer. The utility model discloses a device for measuring tire surface dynamic friction performance has solved and has measured the tire friction in-process and can cause the problem that damage and structure are complicated to the tire. The method optimizes the measurement process, is simple to calculate and compare, and can quickly compare the friction coefficients of different tires; and the destructiveness to the tire is reduced, and the testing cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of the automatic detection, concretely relates to a device for measuring tire surface dynamic friction performance.
Background
The quality of the automobile tire is closely related to the driving safety of the automobile in different environments, and the dynamic friction coefficient of the automobile tire and the ground gripping performance of the tire play a decisive role in the stability of the automobile. There is therefore a need to improve the quality of a vehicle and reduce the impact on driving safety by measuring the dynamic friction coefficient of the vehicle tires. Friction is a very complex phenomenon, and much work has been done by the predecessors and the study of the complex phenomenon is still ongoing.
Currently, there are many methods for measuring the friction of car tires. For example, patent (CN103776639A) proposes a tire mechanics measurement method, which uses a drum simulation device to perform a test by continuously consuming stored energy during the test and realizing a continuous change of speed from high to low, but the method has a long test period, is very destructive to the tire, and has a high cost; the patent (CN206618673U) provides a low-speed adjustable friction coefficient measuring device, and the device adopts the friction pulley, tests steel wheel and the rubber wheel of parcel in the steel wheel outside, and its drive mechanism is chain drive mechanism, and the device structure is complicated, and the model is solved the difficulty.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a device for measuring tire surface dynamic friction performance has solved and has measured the tire friction in-process and can cause the problem that damage and structure are complicated to the tire.
The utility model adopts the technical proposal that: a device for measuring the dynamic friction performance of the surface of a tyre comprises a conveying part and a measuring part,
the conveying part is used for conveying the tire to be measured which is vertically placed,
the measuring part at least comprises a pressure sensing device arranged above the transmission line of the conveying part, the pressure sensing component and the tire to be measured are arranged oppositely, and the pressure sensing device is in signal connection with a computer.
The utility model is also characterized in that,
the conveying part comprises a first rotating shaft, a second rotating shaft and a conveying belt, wherein the first rotating shaft and the second rotating shaft are arranged oppositely, the conveying belt is connected between the first rotating shaft and the second rotating shaft, the belt material tire is vertically placed on the conveying belt, and the first rotating shaft is driven to rotate through a motor.
The measuring part further comprises a baffle arranged above the conveying part, and the pressure sensing device is fixed on the baffle.
Still include supplementary portion of preventing empting, supplementary portion of preventing empting is including passing the horizontal pole of the tire axle center hole of awaiting measuring, the horizontal pole both sides are connected with the installation pole respectively, the end of installation pole is provided with supplementary gyro wheel, supplementary gyro wheel contact in conveying portion surface.
And the pressure sensing device is positioned at the position of the axle center height of the tire to be measured.
The pressure sensing device is connected with an RS484 interface, and the RS484 interface is connected with the computer through an FS232 converter.
The utility model has the advantages that: the utility model discloses a device for measuring tire surface dynamic friction performance has solved and has measured the tire friction in-process and can cause the problem that damage and structure are complicated to the tire. The method optimizes the measurement process, is simple to calculate and compare, and can quickly compare the friction coefficients of different tires; and the destructiveness to the tire is reduced, and the testing cost is reduced.
Drawings
FIG. 1 is a schematic perspective view of an apparatus for measuring dynamic friction performance of a tire surface according to the present invention;
fig. 2 is a side view of fig. 1.
In the figure, 1 is a workbench, 2 is a rotating shaft I, 3 is a rotating shaft II, 4 is a conveyor belt, 5 is a baffle plate, 6 is a pressure sensing device, 7 is a tire to be tested, 8 is an RS484 interface, and 9 is a power supply interface.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The structure of the device for measuring the dynamic friction performance of the tire surface provided by the utility model is shown in figure 1 and figure 2, and comprises a workbench 1, a transmission part and a measuring part are arranged on the workbench 1,
the transfer section is for transferring the tire 7 to be tested placed vertically,
the measuring part comprises at least a pressure sensing device 6 arranged above the transmission line of the conveying part, the pressure sensing device 6 is arranged opposite to the tyre 7 to be measured, and the pressure sensing device 6 is connected with a computer (not shown) through signals.
For example, the pressure sensor device 6 may be connected to an RS484 interface, and a cable of the RS484 interface is connected to the computer through an FS232 converter. The transmission of the pressure sensing signal is a common general knowledge in the art, and will not be described and defined herein.
Preferably, the pressure sensing device 6 is located at the axial height of the tire 7 to be measured, that is, the setting height of the pressure sensing device 6 is half of the diameter of the tire to be measured, so that the tire 7 to be measured can be in front contact with the pressure sensing device 6, and the accuracy of the measured friction value is ensured.
For example, the conveying part may include a first rotating shaft 2 and a second rotating shaft 3 which are oppositely arranged, and a conveyor belt 4 connected between the first rotating shaft 2 and the second rotating shaft 3, the tire 7 to be tested is vertically placed on the conveyor belt 4, and the first rotating shaft 2 is driven to rotate by a motor (not shown). The workbench 1 is provided with a power interface 9, and the power interface 9 is used for supplying power to the motor.
Further, the measuring part further comprises a baffle 5 fixed on the workbench 1, the baffle 5 is positioned above the conveyor belt 4, and the pressure sensing device 6 can be mounted on the baffle 5 through bolts.
Further, in order to avoid the tire 7 that awaits measuring of vertical placement to incline and fall, the utility model discloses still including supplementary portion of preventing empting, supplementary portion of preventing empting is including the horizontal pole (not shown) that passes the axle center hole of the tire 7 installation pivot that awaits measuring, and the horizontal pole both sides are connected with the installation pole respectively (not shown), and the end of installation pole is provided with supplementary gyro wheel (not shown), and supplementary gyro wheel contacts in the surface of conveyer belt 4. The auxiliary rollers that 7 both sides of the tire that awaits measuring set up can prevent that the tire 7 that awaits measuring from falling down when lieing in the contact of pressure sensing device 6, moreover, in order to make supplementary portion of empting more showing the effect of preventing falling of the tire 7 that awaits measuring, four installation poles can be connected to the horizontal pole, and an auxiliary roller is respectively connected to every installation pole, and these four auxiliary rollers are located the four corners position of the tire 7 that awaits measuring. In order to conveniently and quickly replace the tire 7 to be tested, the cross rod can be detachably connected with the mounting rod through threads, splicing and the like.
During measurement, a tire 7 to be measured is vertically placed on the conveyor belt 4, the position of one half of the height of the tire surface of the tire 7 to be measured is opposite to the pressure sensing device 6, then the motor drives the rotating shaft I2 to rotate, the conveyor belt 4 and the tire 7 to be measured are driven to move, and when the tire 7 to be measured moves to be in contact with the pressure sensing device 6 on the baffle 5 and the data transmitted by the tire 7 to be measured are stable, the pressure sensing device 6 transmits a pressure sensing signal to the computer. When the tire 7 to be measured is in contact with the pressure sensing device 6 and the conveyor belt 4 normally runs, it can be known from the first newton law that the resultant force exerted on the tire 7 to be measured is zero, the magnitude of the dynamic friction between the tire 7 to be measured and the conveyor belt 4 is equal to the resistance of the pressure sensing device 6 on the baffle 5, that is, the magnitude of the pressure information detected by the pressure sensing device 6 is equal to the dynamic friction between the tire 7 to be measured and the conveyor belt 4, and the dynamic friction coefficient between the tire 7 to be measured and the conveyor belt 4 can be calculated by using the formula μ ═ f/mg. And the dynamic friction performance of the tires can be compared by replacing different tires for measurement.
Claims (6)
1. A device for measuring the dynamic friction performance of the surface of a tire is characterized by comprising a conveying part and a measuring part,
the conveying part is used for conveying the tire to be measured which is vertically placed,
the measuring part at least comprises a pressure sensing device arranged above the transmission line of the conveying part, the pressure sensing device is arranged opposite to the tire to be measured, and the pressure sensing device is in signal connection with a computer.
2. The apparatus for measuring the dynamic friction performance of a tire surface as claimed in claim 1, wherein said conveying part comprises a first rotating shaft and a second rotating shaft which are oppositely arranged, and a conveyor belt connected between said first rotating shaft and said second rotating shaft, said tire to be measured is vertically placed on said conveyor belt, and said first rotating shaft is driven to rotate by a motor.
3. An apparatus for measuring dynamic friction properties of a tire surface as in claim 1, wherein said measuring section further comprises a baffle plate disposed above said conveying section, said pressure sensing device being secured to said baffle plate.
4. The apparatus for measuring the dynamic friction performance of a tire surface according to claim 1, further comprising an auxiliary anti-toppling portion, wherein the auxiliary anti-toppling portion comprises a cross rod passing through the axial hole of the tire to be measured, mounting rods are respectively connected to both sides of the cross rod, and auxiliary rollers are disposed at the ends of the mounting rods and contact the surface of the conveying portion.
5. An apparatus for measuring dynamic friction properties of a tire surface as in claim 1 or 3, wherein said pressure sensing device is located at the height of said axis of said tire under test.
6. An apparatus for measuring dynamic friction properties of a tire surface as in claim 1, wherein said pressure sensing device is connected to an RS484 interface, said RS484 interface being connected to said computer through an FS232 converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921656128.8U CN210803243U (en) | 2019-09-30 | 2019-09-30 | Device for measuring dynamic friction performance of tire surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921656128.8U CN210803243U (en) | 2019-09-30 | 2019-09-30 | Device for measuring dynamic friction performance of tire surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210803243U true CN210803243U (en) | 2020-06-19 |
Family
ID=71227791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921656128.8U Expired - Fee Related CN210803243U (en) | 2019-09-30 | 2019-09-30 | Device for measuring dynamic friction performance of tire surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210803243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358377A (en) * | 2021-08-09 | 2021-09-07 | 山东柏源技术有限公司 | Rubber tire friction measuring device |
-
2019
- 2019-09-30 CN CN201921656128.8U patent/CN210803243U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358377A (en) * | 2021-08-09 | 2021-09-07 | 山东柏源技术有限公司 | Rubber tire friction measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20200619 Termination date: 20210930 |