CN103575551B - Tire bench testing apparatus and tire performance testing method using the same - Google Patents
Tire bench testing apparatus and tire performance testing method using the same Download PDFInfo
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- CN103575551B CN103575551B CN201310244399.3A CN201310244399A CN103575551B CN 103575551 B CN103575551 B CN 103575551B CN 201310244399 A CN201310244399 A CN 201310244399A CN 103575551 B CN103575551 B CN 103575551B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C25/00—Apparatus or tools adapted for mounting, removing or inspecting tyres
- B60C25/002—Inspecting tyres
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The present invention provides a tire bench testing apparatus by which a test result having a higher correlation with a performance test result of a tire which is carried out in the field can be obtained in a room. The tire bench testing apparatus (1) carrying out the performance test of the tire in the room comprises a drum (2) which enables the tire (T) to be contacted and drive and can rotate; a supporting shaft (3) which keeps the tire (T) assembled in a rim (J) to be rotatable in a cantilever manner; a driving unit for rotating and driving the drum (2) or the supporting shaft (3). The drum (2) possesses an inner circumferential surface (2G), and the inner circumferential surface (2G) possesses a simulation road (7) on which the tire (T) can drive, and a smooth arc-shaped surface (2M) protruded towards a radial outside of the drum in a cross-section having the rotation axis (2c) of the drum.
Description
Technical field
The present invention relates to the bench test device of tire and the tyre performance test method using the device, using the wheel
The bench test device of tire can indoors obtain the examination higher with the performance test results dependency of the tire carried out in outdoor
Test result.
Background technology
As the tire running test method of the driving performance for evaluating tire, it is known to the real vehicle running test based on real vehicle
Method and the bench test method of driving performance is evaluated using rotary drum.
Real vehicle running test method is the method carried out in outdoor, is travelled on test route using vehicle, and evaluates example
Such as noiseproof feature, turn performance, water float the tire running performance of performance and polishing machine.
On the other hand, bench test method is the method for carrying out indoors, as shown in figure 8, using the inner peripheral surface in rotary drum d
Da is provided with the bench test device s of the tread ta used for tire t, and such as regulation loads on load, the rotary drum d of tire t
Or travel speed, the direction of rotation of tire t of tire t etc., and make tire t that traveling is contacted on above-mentioned inner peripheral surface da, so as to comment
The above-mentioned various tire running performances of valency.
However, there are the following problems, i.e.,：The result obtained by conventional bench test and real vehicle drive trial results
Dependency it is very not good.It can be seen from the result of the various experiments that inventor is carried out, the reason for above-mentioned dependency is relatively low
In the ground connection shape of the tire travelled in the inner peripheral surface of rotary drum is big with the ground connection shape of tire when being travelled on road surface with real vehicle
Differ, therefore cause the load difference for acting on ground plane larger etc..Record in following patent documentations and bench test dress
Put the technology of correlation.
Patent documentation 1：Japanese Unexamined Patent Publication 2008-82709 publications
The content of the invention
The present invention be in view of above-mentioned such problem and propose, its main purpose is provides examination on a kind of platform of tire
Experiment device and the tyre performance test method of the device is used, the bench test device for making the tire for carrying out indoors turns
Bulging inner peripheral surface is formed as the smooth arc-shaped face prominent to rotary drum radial outside on the section including drum rotating axle center,
As basic so that the ground connection shape of the tire when ground connection shape of tire during bench test and the running test based on real vehicle
Shape is approximate, thus, it is possible to obtain the result of the test higher with the dependency of the performance test results of the tire carried out using real vehicle.
The invention described in technical scheme 1 in the present invention is a kind of bench test device of tire, for entering indoors
The performance test of road wheel tire, the bench test device of the tire includes：The rotary drum that can be rotated, makes tire contact simultaneously with the rotary drum
Tire is set to travel on the rotary drum；Support shaft, the support shaft in a cantilever fashion remains the tire for being assemblied in wheel rim
Can rotate；And driver element, the driver element carries out rotation driving to the rotary drum or the support shaft, the tire
Bench test device is characterised by that the rotary drum has inner peripheral surface, and the inner peripheral surface possesses the simulated roadway for tire running,
In section including drum rotating axle center, the inner peripheral surface has arc-shaped face, and the arc-shaped face is prominent to rotary drum radial outside
What the smooth circular arc for going out was formed continuously.
In addition, the bench test device of the tire according to described in technical scheme 1, in the invention described in technical scheme 2
In, in the section, radius of curvature R a in the arc-shaped face is 1.70 times～2.40 times of rotary drum radius Rb, the rotary drum half
Footpath Rb is the radius of the outermost points of the rotary drum radial direction from drum rotating axle center to the arc-shaped face.
In addition, the bench test device of the tire according to described in technical scheme 1 or 2, in sending out described in technical scheme 3
In bright, the simulated roadway is any one in asphalt road, concrete road and gravel road.
In addition, the bench test device of the tire according to described in technical scheme 1 or 2, in sending out described in technical scheme 4
In bright, the simulated roadway is 0.40mm～0.80mm according to texture depth defined in ISO10844.
In addition, the bench test device of the tire according to described in any scheme in technical scheme 1 to 4, in technical scheme 5
In described invention, the simulated roadway is included in rotary drum circumference what is be divided and pasted in the way of it can change
Multiple dividing bodies.
In addition, the bench test device of the tire according to described in technical scheme 5, in the invention described in technical scheme 6
In, length of the dividing body in rotary drum circumference is different.
In addition, the bench test device of the tire according to described in any scheme in technical scheme 1 to 6, in technical scheme 7
In described invention, the driver element is covered by sound-absorbing material.
In addition, the bench test device of the tire according to described in any scheme in technical scheme 1 to 7, in technical scheme 8
In described invention, have：The guarantor of the water on Sprinkler and the holding simulated roadway to simulated roadway watering
Hold unit.
In addition, the bench test device of the tire according to described in any scheme in technical scheme 1 to 8, in technical scheme 9
In described invention, also including the measuring unit of the performance for measuring tire, the measuring unit includes the survey of measurement load
Force transducer, the force cell is arranged on inner peripheral surface that the support shaft supports are the bearing for rotating freely.
In addition, the bench test device of the tire according to described in any scheme in technical scheme 1 to 9, in technical scheme
In invention described in 10, also have：Control rotation speed control device, the controlled loading of the rotary speed of the driver element
In the rotating direction controller of the direction of rotation of the contact load control apparatus and the control tire of the load of the rotary drum.
The bench test device of the tire according to described in any scheme in technical scheme 1 to 10, in the institute of technical scheme 11
In the invention of record, the arc-shaped face is arranged on the equator of the inner peripheral surface.
In addition, the invention described in technical scheme 12 is a kind of tyre performance test method, using the bench test of tire
Device and carry out the performance test of tire indoors, the tyre performance test method is characterised by, including following operation：OK
Operation is sailed, the tire for being assemblied in wheel rim is contacted with the inner peripheral surface of the rotary drum that can be rotated and up in the inner peripheral surface of the rotary drum
Sail, wherein the rotary drum possesses simulated roadway in the inner peripheral surface；With measurement operation, during measuring the traveling of the tire
Performance, in the section including drum rotating axle, the inner peripheral surface has arc-shaped face, and the arc-shaped face is outside to rotary drum footpath
What the smooth circular arc that side projects was formed continuously.
Tyre performance test method according to described in technical scheme 12, in the invention described in technical scheme 13, institute
Radius of curvature R a for stating arc-shaped face is 1.70 times～2.40 times of rotary drum radius Rb, and rotary drum radius Rb is from drum rotating axle
Center to the outermost points of the rotary drum radial direction in the arc-shaped face radius.
Tyre performance test method according to described in technical scheme 12 or 13, in the invention described in technical scheme 14
In, the traveling operation includes making the drum rotating and making the tire with the speed different from the rotary speed of the rotary drum
The operation of degree traveling, the measurement operation is to measure the friction of the friction produced by the rotary drum and the speed difference of the tire
The friction coefficient measurement operation of coefficient.
Tyre performance test method according to described in technical scheme 12 or 13, in the invention described in technical scheme 15
In, the traveling operation includes one side to the tire imposed load, while making the tire to direction of rotation relative to described
The operation of the different direction running in the direction of rotation of rotary drum, the measurement operation is the cross force that measurement results from the tire
Cross force measures operation.
Tyre performance test method according to described in technical scheme 12 or 13, in the invention described in technical scheme 16
In, also including the watering operation to simulated roadway watering, the traveling operation is included on the simulated roadway after being sprinkled water
While to the tire imposed load, while making the tire different relative to the direction of rotation of the rotary drum to direction of rotation
The operation of direction running, the measurement operation is the cross force measurement operation of the cross force that measurement results from the tire.
Tyre performance test method according to described in technical scheme 12 or 13, in the invention described in technical scheme 17
In, the measurement operation is the mass measurement operation of the difference of the quality of the tire before and after measurement traveling operation.
Tyre performance test method according to described in technical scheme 12 or 13, in the invention described in technical scheme 18
In, the measurement operation is the noise measurement operation of measurement noise.
The bench test device of the tire of the present invention is used to carry out the performance test of tire indoors, tries on the platform of the tire
Experiment device includes：Make tire interface and the rotary drum that can be rotated for travelling；The tire of wheel rim will be assemblied in the side of cantilever
Formula remains the support shaft that can be rotated；And the driver element of rotation driving is carried out to the rotary drum or the support shaft.Institute
State rotary drum and there is inner peripheral surface, the inner peripheral surface possesses for simulated roadway during tire running, the inner peripheral surface is including drum rotating axle
There is the smooth arc-shaped face prominent to rotary drum radial outside in the section of the heart.On the platform using this bench test device
In test, due to the ground connection shape of tire and the connecing for the tire travelled on the road surface of real vehicle running test that travel on rotary drum
Contoured is approximate, therefore the driving performance of bench test is approximate with the driving performance in real vehicle running test.Therefore the present invention
The bench test device of tire, is obtained in that the result of the test higher with the result of the test dependency of the tire carried out in outdoor.
Description of the drawings
Fig. 1 is the side view of the bench test device of the tire for schematically showing an embodiment of the invention.
Fig. 2 is the axonometric chart of Fig. 1.
Fig. 3 (a) is the amplification view of rotary drum, (b) is the axonometric chart of dividing body.
Fig. 4 is the figure of the ground connection shape for illustrating the tire in real vehicle running test.
Fig. 5 (a) be radius of curvature R a in arc-shaped face is shown for 1.0 times of rotary drum radius Rb when ground connection shape figure,
(b) be radius of curvature R a in arc-shaped face is shown for 3.0 times of rotary drum radius Rb when ground connection shape figure.
Fig. 6 is the sectional view of the bearing of the installment state for illustrating force cell.
Fig. 7 (a) is the side view of the equipping position of the noise measuring instrument for illustrating bench test device, (b) is that its main view is cutd open
View, (c) be the equipping position for illustrating the noise measuring instrument in real vehicle running test top view.
Fig. 8 is the side view illustrated to existing bench test device.
Drawing reference numeral explanation：T ... pneumatic tires；1 ... bench test device；2 ... rotary drums；2c ... drum rotatings axle center；
2G ... inner peripheral surfaces；2M ... arc-shapeds face；3 ... support shafts；7 ... simulated roadways；J ... wheel rims；T ... tires.
Specific embodiment
Hereinafter, an embodiment of the invention is illustrated based on accompanying drawing.
As shown in Figures 1 and 2, the bench test device (below, sometimes referred to simply as " device ") 1 of tire of the invention, be
For being directed to the multipurpose that SUV (Sports Utility Vehicle) etc. was used and be referred to as to car use, motorcycle indoors
The four-wheel drive that automobile is used with etc. various tires (hereinafter sometimes referred to simply as " tire ") T the dress tested of driving performance
Put, wherein, driving performance for example includes noiseproof feature, turn performance, water drift performance, polishing machine etc..
The device 1 of present embodiment is for example configured to include：Rotary drum 2 that can be circumferentially rotatable；Support shaft 3, the supporting
Axle 3 keeps in a cantilever fashion tire T, and tread surface T1 of the tire T for making to be installed on wheel rim J in the inner peripheral surface 2G of rotary drum 2
Upper contact simultaneously rotates；Drive the tire driver element 4 of the support shaft 3；Above-mentioned rotary drum 2 is remained in a cantilever fashion can be revolved
The drum rotating axle 5 for turning；And the rotary drum driver element 6 of rotation driving is carried out to the drum rotating axle 5.So, this embodiment party
The device 1 of formula becomes the measurement apparatus of built-in rotary drum (inside drum) formula that tire T is travelled on the inner peripheral surface 2G of rotary drum 2.
The rotary drum 2 of present embodiment includes：Possesses the simulated roadway 7 for imitating the road surface used in real vehicle running test
Inner peripheral surface 2G；The side 2A of the side of above-mentioned drum rotating axle 5 is installed；And with the another of the opening O passed in and out for tire T
The side 2B of side.Additionally, the periphery in above-mentioned opening O is provided with highly less flange part Of.
As shown in Fig. 3 (a), above-mentioned inner peripheral surface 2G has to rotary drum radial outside in the section including drum rotating axle 2c
Prominent smooth arc-shaped face 2M.The experimental result of inventor can distinguish, as shown in figure 4, on this arc-shaped face 2M
The ground connection shape of the tire of traveling is approximate with the ground connection shape of the tire travelled on the road surface in real vehicle running test.Therefore,
The load of the ground plane of the tire travelled on the 2M of arc-shaped face is acted on, with the ground plane acted in real vehicle running test
Load distribution is approximate.Therefore, the bench test device of tire of the invention, is obtained in that and carries out in outdoor based on real vehicle
The higher result of the test of the travel performance test results relevance of tire.
In the present embodiment, the rotary drum of arc-shaped face 2M outermost points P radially are disposed substantially at inner circumferential
On the equator Ca of face 2G, and the arc-shaped face 2M is formed as spreading all over the whole width of simulated roadway 7." substantial " when
So include that outermost points P are arranged on the situation on the equator Ca of inner peripheral surface 2G, in addition, also include from inner peripheral surface 2G's
Equator Ca rises and is arranged at the situation in the range of the 5% of the rotary drum axial length Wd of inner peripheral surface 2G in rotary drum axial direction both sides.
Preferably, radius of curvature R a of this arc-shaped face 2M is 1.70 times～2.40 times of rotary drum radius Rb, the rotary drum
Radius Rb is the radius from drum rotating axle center 2c to outermost points P.That is, the experimental result of inventor can distinguish,
Radius of curvature R a is less than in the case of 1.70 times of rotary drum radius Rb, as shown in Fig. 5 (a), the shape and real vehicle of ground plane
The ground connection shape (shown in Fig. 4) in running test is compared, and there is following tendency：The tire circumference on whole tire axial
Equal length and be formed as less near rectangular shape.Conversely, exceeding the 2.40 of rotary drum radius Rb in radius of curvature R a
In the case of times, such as shown in Fig. 5 (b), the shape of ground plane exists as having a down dip compared with the ground connection shape in real vehicle running test
To：The circumferential length of the tire of tire equator C side is excessive relative to the tire circumferential lengths of the side of tire axial two, and whole
The circumferential length of tire becomes larger approximate circular shape on individual tire axial.Therefore no matter under what circumstances, arc-shaped
The shape of the ground plane on the 2M of face all differs widely with the ground connection shape in real vehicle running test, hence in so that acting on ground plane
Load distribution differ widely, it is possible to making the phase of real vehicle running test and the result of the test of the driving performance of bench test
Closing property reduces.According to this viewpoint, radius of curvature R a is preferably more than 1.90 times of rotary drum radius Rb, it is additionally preferred to for little
In 2.20 times of rotary drum radius Rb.
Furthermore it is preferred that simulated roadway 7 is formed by any one in asphalt road, concrete road and gravel road.Thus, it is possible to
Enough carry out travel performance test corresponding with desired pavement state.
In addition, as shown in Fig. 3 (a), the simulated roadway 7 can be formed by allocating core 7a and bond material 7b,
Wherein, the property of core 7a meets the grading curve of ISO road surfaces specification and (refers to reference to the design of attached description C of ISO10844
The grading curve allowed band of the asphalt mixtures described in south), bond material 7b is by the resin structure for combining above-mentioned core 7a
Into.
Preferably, in this case, during simulated roadway 7 is according to ISO 10844 " paved surface carried out based on volumetric method
Texture depth defined in the measurement of the texture depth of macroscopic view " is 0.40mm～0.80mm.That is, in the situation for carrying out noise fest
Under, if texture depth is less than 0.4mm, the exciting force of longitudinal furrow air column resonance noise reduces, it is possible to causing to be made an uproar with real vehicle
The dependency of sound result of the test is reduced.If conversely, texture depth cannot evoke the frequency of longitudinal furrow air column resonance noise more than 0.8mm
Rate, so as to equally exist the tendency reduced with the dependency of the noise fest result of real vehicle.
As shown in Fig. 3 (b), the simulated roadway 7 of present embodiment is divided in rotary drum circumference, and by being replaced by
The multiple dividing bodies 8 for stating desired road surface are constituted.Furthermore it is preferred that the dividing body 8 is with the different size of rotary drum circumferential lengths L
And formed.Thus, for example the noise based on spacing converter technique etc. can be carried out with good precision by the seam of dividing body 8
Test.In addition, although particular determination is not carried out to length L, but in order to balancedly guarantee the correlation of various driving performances
Property, length L is preferably the 50%～80% of rotary drum radius Rb.In addition, in order to effectively play above-mentioned effect, maximum fractionation
Circumferential lengths Lb of body 8b are preferably 125%～105% with the ratio Lb/La of circumferential lengths La of smallest partition body 8a.Additionally, example
The securing member 18 as known to using bolt etc. and dividing body 8 is firmly fixed at into rotary drum main body.
In addition, as shown in the chain-dotted line of Fig. 2, device 1 is preferably covered by sound-absorbing material Z.It is provided with the present embodiment：
Tyre side enclosure Z1 of being surrounded tire driver element 4 using sound-absorbing material Z and rotary drum is driven using sound-absorbing material Z single
Rotary drum side enclosure Z2 that unit 6 surrounds.Tyre side enclosure Z1 is formed as rectangular-shape, and the cuboid is included by support shaft
The part of 3 insertions is provided with the side of opening (not shown).In addition, rotary drum side enclosure Z2 is formed as rectangular-shape, should
Cuboid is included in the side that opening (not shown) is provided with by the part of the insertion of drum rotating axle 5.Thus, due to reducing
From the noise and the driving noise that sent of tire driver element 4 and rotary drum driver element 6 of tire T reflections, therefore, it is possible to
The noise of good measure of precision tire.
In order to further play above-mentioned effect, shown in such as Fig. 1 or Fig. 3 (a), preferably sound-absorbing material Z is pasted onto into rotary drum 2
The inner side of the side 2A of the side.
In terms of cost cutting and acoustically effective is taken into account, such as preferred felt, glass cotton, asbestos and polyurathamc etc.
As this sound-absorbing material Z.
As shown in Figures 1 and 2, in the present embodiment, the tire driver element 4 possesses：Base station 10；In above-mentioned base station
It is supported to axially enter the supporting station 11 of line slip movement along rotary drum on 1；And the supporting arm 13 with bearing 14, the axle
Hold 14 lifting freely to be stretched and support shaft 3 is remained into energy in end via cylinder body 12 on above-mentioned supporting station 11
Enough rotations.The tire driver element 4 moves up and down supporting arm 13 using cylinder body 12, thus, it is possible to be revolved with the load for specifying
The tire T for turning to be held in freely support shaft 3 is crimped on inner peripheral surface 2G.
In addition, in the present embodiment, it is preferable that tire driver element 4 also includes that known contact load control apparatus (are omitted
Diagram) and known rotating direction controller (omitting diagram), wherein contact load control apparatus are included by controlling cylinder body 12
Pressing force and control such as load transducer of load to rotary drum 2 etc.；Rotating direction controller includes the control phase of support shaft 3
Such as servo motor of arranging angle for drum rotating axle center 2c etc..
The support shaft 3 is provided with such as motor 15 for making the rotation of support shaft 3 in the end of side.In addition, at this
The tire rotation speed control unit such as such as changer (omitting diagram) is installed, the tire rotary speed control in embodiment
Unit can freely control the rotary speed of above-mentioned motor 15, and then can control the travel speed of tire T.
The drum rotating axle 5 is fixed on the side 2A of the side of rotary drum 2 in the mode concentric with drum rotating axle center 2c.
The rotary drum driver element 6 is configured to include：Keep the rotary drum side base platform 16 of drum rotating axle 5；It is placed in above-mentioned
Rotary drum side base platform 16 and the rotary drum side bearing 23 for rotatably supporting on drum rotating axle 5；And rotate drum rotating axle 5
Such as motor 17.In addition, rotary drum driver element 6 is provided with the drum rotating speed control unit such as such as changer (omitting
Diagram), the drum rotating speed control unit controls the rotary speed of above-mentioned motor 17, and then controls the rotation speed of rotary drum 2
Degree.
According to the test of driving performance, and this device 1 uses eventually various measuring units (not shown).
For example in running test in the case of measurement noise, the measuring unit is using based on JASO specification defineds
The noise meter of JISC 1505 (precision sound level meter) or including based on above-mentioned specification noise meter noise measuring instrument 9 (in Fig. 7
A its equipping position is shown) in (), Fig. 7 (b).
In addition, measuring the load (vertical load) of the above-below direction of tire, the brake force of tire or drive in running test
In the case of power (horizontal load), as shown in fig. 6, force cell 20 of the measuring unit using measurement load.The dynamometry
Sensor 20 is installed on the inner peripheral surface 14a of the bearing 14 for rotatably supporting support shaft 3.The dynamometry of present embodiment
Sensor 20 is for example installed on bearing 14 up and down, and being for example installed on the force cell 20a of above-below direction is used to measure
The load of tire above-below direction, being installed on the force cell 20b of left and right directions is used to measure the load of tire fore-and-aft direction.By
Measurement data obtained by the measurement of force cell 20 is processed using arithmetic processing apparatus 24, and as coefficient of friction, laterally
Power, load etc. and calculate.
As shown in figure 1, can arrange in device 1：Sprinkler (omits diagram), and the Sprinkler is included to simulated roadway
The known water regulator of such as Water spray nozzle with known construction of 7 waterings and the water yield of the above-mentioned Water spray nozzle of regulation；
And holding unit 21, the holding unit 21 for example keeps to the water on the simulated roadway 7 that is made up of water receiving cover 22.
The water receiving cover 22 is configured to include：Medial wall 22a, the medial wall 22 is configured to the inner than flange part Of by turning
The drum inner side of radial direction and circumferentially extending along rotary drum axial direction and rotary drum；Lateral wall 22b, lateral wall 22b is configured at flange part Of's
Outside and be connected with the outer end of medial wall 22a.This water receiving cover 22 suppresses rotary drum 2 that rotary drum 2 is risen to because of centrifugal force when rotating
The water on top fall directly on the bottom of rotary drum 2, it is constant so as to contribute to remaining the depth of water in tread surface.This enforcement
The water receiving cover 22 of mode is for example fixed on base station 10 (not shown), and rotary drum 2 is retained as the state for rotating freely.
In addition, device 1 can also possess is attached to for example being made up of known heater for rotary drum 2 or simulated roadway 7
Temperature control unit (omit diagram).Comment thereby, it is possible to carry out tyre performance in the case where temperature, pavement temperature is considered
Valency.
Illustrated using the method for the driving performance of 1 pair of measurement tire of the device for constituting in the above described manner.This embodiment party
The measuring method of formula includes：Traveling operation, for making to be assemblied in the inner peripheral surface 2Gs of the tire T in the rotary drum 2 that can be rotated of wheel rim J
Upper contact is simultaneously travelled, and wherein rotary drum 2 possesses simulated roadway 7 in the inner peripheral surface 2G；Noise measurement operation, for measuring the wheel
Performance during the traveling of tire T.
Also, in the case where noiseproof feature test is carried out, in addition to the shape of the inner peripheral surface 2G of rotary drum 2, its other party
Face is carried out on the basis of the monomer bench test method of JASOC 606-8 defineds.
In the traveling operation, it is driven by the motor 15 to being installed on support shaft 3 and tire T is revolved
Turn to drive.Also, decline support shaft 3 using cylinder body 12, it is using contact load control apparatus control load, such as negative in regular load
Tire T is set to be grounded on the equator Ca of the inner peripheral surface 2G of rotary drum 2 under load state.Additionally, in the traveling operation, preferably will be described
Water receiving cover 22 is dismantled from device 1 and is not measured the reflecting background of the water receiving cover 22.
" the regular load load condition " it is meant that wheel rim is assembled in regular wheel rim and be filled with it is regular it is intrinsic pressure after
Tire, applies the state of regular load.Wherein, described " regular wheel rim " refers to the specification body in the specification including tire institute foundation
Specify the wheel rim of the specification in system according to each tire, if such as JATMA then represents standard rim, if TRA is then represented
" Design Rim ", if or ETRTO then represent " Measuring Rim "." regular intrinsic pressure " is referred to according to each wheel
Tire specifying the air pressure of the specification, if JATMA then represents highest air pressure, if TRA then represents form " TIRE LOAD
Described maximum in LIMITS AT VARIOUS COLD INFLATION PRESSURES ", if ETRTO is then represented
" INFLATION PRESSURES ", in the case where tire is used for car 200kPa is then set to." the regular load " refers to root
Specify the load of the specification according to each tire, if JATMA then represents " maximum load capability ", if TRA then represents table
Described maximum in lattice " TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES ", if
ETRTO is then represented " LOAD CAPACITY ".
Next, in measurement operation, using noise measuring instrument 9 tire T the making an uproar on rotary drum 2 during traveling is measured
Sound.Noise measuring instrument 9 is configured in the position of JASO specification defineds.That is, as Fig. 7 (a) and (b) are shown, noise measuring instrument 9 is set
Put in following position, i.e.,：On the vertical n of the center 3c of support shaft 3 by and in the side of tire equator C be apart from L1
1m, and from outermost points P of the inner peripheral surface 2G of rotary drum 2 leave toward upper apart from H1 for 0.25m position.
Can be distinguished according to the checking of inventor, the noise testing carried out based on the noise fest method of this tire is tied
Really, it is very high with the dependency of the noise testing result carried out in real vehicle running test (for this point, by enforcement below
It is described in detail in example.).Therefore not carrying out the real vehicle inertia traveling test of outdoor just can correctly evaluate making an uproar for tire T
Sound is tested.
As other embodiment, the method that there is the polishing machine of measurement tire T.In this case, in the traveling
In operation, the motor 15 for being installed on support shaft 3 or the motor 17 for being installed on drum rotating axle 5 are driven, make tire T
Contact rotation is carried out with the inner peripheral surface 2G of rotary drum 2.Then, in measurement operation, the tire T's before and after the above-mentioned traveling operation of measurement
It is of poor quality.In measurement operation, in addition to the method for the quality of the tire T before and after travelling is tried to achieve by measurement, also exist
Collect tire wear break flour produced during traveling and measure method of its quality etc..The measurement of quality is used known
Quality meter.
The method that also there is the frictional behaviour of measurement tire as alternate manner.For example by making rotary speed V of rotary drum 2
(km/h) it is different from rotary speed v (km/h) of tire T, and between the coefficientoffrictionμ and skidding rate S when measuring tyre slip
Relation (hereinafter referred to as " μ-S characteristics "), thus, it is possible to evaluate above-mentioned frictional behaviour.Friction between tire T and simulated roadway 7
The value of coefficient μ, braking according to following mathematical expressions 1, skidding rate S when driving and change.
(mathematical expression 1)
During braking：Skidding rate S (%)={ (V-v)/V } × 100%
During driving：Skidding rate S (%)={ (V-v)/V } × 100%
Specifically, in traveling operation, rotary drum 2 and tire T is rotated with identical rotary speed, then, protect
Hold rotary drum 2 speed it is constant and using the rotation speed control device so that the side gradually slowed down of the rotary speed of tire T
Formula is braked.Then, in measurement operation, the frictional force under the on-position is exported by force cell 2, is thus calculated
Coefficientoffrictionμ is evaluating tyre slip rate-coefficient of friction characteristic during braking.Additionally it is possible to make the rotary speed urgency of tire T
Play declines and becomes full locking (full lock) state, and by calculating the state under coefficientoffrictionμ evaluating tire
Energy.
In addition, with evaluation methodology during above-mentioned braking conversely, ramping up can also the rotary speed of tire T and become
Driving condition, thus evaluates tyre slip rate-coefficient of friction characteristic when driving.Further, additionally it is possible to make the rotary speed of tire T
Steeply rise and become wheel spin status, so as to evaluate the state under tyre performance.
As the method that other embodiment also has measurement turn performance.In this case, in traveling operation, utilize
Motor 15 makes tire T that rotation is contacted on simulated roadway 7, and load is applied to tire T using cylinder body 12 and via support shaft 3
Lotus.Also, using rotating direction controller by the direction of rotation of tire T be configured to relative to rotary drum 2 direction of rotation not
Same direction, so that tire T is in turn condition.Also, in measurement operation, measured in this turn using force cell 20
The cross force produced by tire T under curved transport condition.
Further, also there is the method that measurement water floats performance as other embodiment.In the measuring method, in traveling work
Before sequence, carry out spraying simulated roadway 7 the watering operation of the desired amount of water.Next, carrying out curving with above-mentioned measurement
Can the same traveling operation of method and measurement operation, thus measure water drift performance.
Although above the method to measuring the various driving performances of tire is described, these sides are not limited to
Method, additionally it is possible to implement the test of other driving performances such as endurance quality, vibration performance using the device 1 of present embodiment.Separately
Outward, now using the rotation speed control device, contact load control apparatus and rotating direction controller, turning driving is carried out
Or so as to the rotary speed of tire and rotary drum or load on the load of tire T and be continually changing and travel such that it is able to carry out
State the measurement of the driving performance under transport condition.Further, simulated roadway 7 is respectively set to into asphalt road, concrete road, gravel road
And allotment core 7a and the road surface by the bond material 7b for constituting the resin that core 7a is combined, wherein, above-mentioned core
The property of material 7a meets the grading curve (with reference to the grading curve allowed band of asphalt mixtures) of asphalt mixtures, and is directed to
Above-mentioned driving performance on above-mentioned various simulated roadways 7 is tested.
Although having been described in detail to the preferred embodiment of the present invention above, the reality of diagram is the invention is not limited in
Apply mode, additionally it is possible to be deformed into various modes to implement.
Embodiment
In order to confirm the effect of the present invention, obtain based on JASO specifications and using the bench test device of the present application
The integrated value of the noise of tire, pitch noise (once) and ground connection shape when producing these noises, and carried out and reality
The test that the result of the test of above-mentioned indices when car is travelled compares.Show for different tire size in table 1 and table 2
Test result.Common specification is as follows.
<Bench test device>
The position of noise measuring instrument：On the vertical including tire rotary shaft, the distance wheel abnormal red skin of infant on rotary drum axial direction
Road is 1.0m, and is upward the position (with reference to Fig. 7 (a), (b)) of 0.25m from the bottom of rotary drum inner peripheral surface
The specification of noise measuring instrument：Noise meter based on JIS C 1505 (precision sound level meter)
The specification of simulated roadway：The allotment (common in conventional example, comparative example and embodiment) of core and bond material
The texture depth of simulated roadway：0.44mm
<Real vehicle noise fest (inertia traveling passes through noise)>
As shown in Fig. 7 (c), on the basis of ECE R117, noise measuring instrument is installed on from vehicle traveling center C-C and is left
It is highly the position of 1.2 ± 0.02m on 7.5 ± 0.05m and ground.Also, make vehicle advance, in the position more forward than A-A
Engine stop is made, speed when then reaching between noise measuring instrument b, b to the front end of vehicle is adjusted and is allowed to be in
Following velocity intervals, noise grade during various speed is calculated using following regression equations.Speed has been obtained in table 1 for 80km/h
When noise grade, obtained in table 2 speed for 40km/h when noise grade.
Speed：70km/h～90km/h (passenger car tire)
Speed：30km/h～50km/h (tyre for heavy load)
Regression equation：Noise grade=A+B × Log (speed)
<Table 1>
Passenger car tire
Tire size：235/45R18
Wheel rim：8.0J×18
It is intrinsic pressure：176kPa (4 wheel meansigma methodss)
Intrinsic pressure≤1.1 × 250 × (Qt/Qr) × 1.25 of the tire of 250 × (Qt/Qr) × 1.25≤mono- wheel
Load：4.60kN (4 wheel meansigma methodss)
Load Qt of the tire of one wheel in JIS defineds maximum load Qr 50%～90% scope, 4
The average load of wheel is the 75 ± 5% of maximum load Qr
Rotary drum radius Rb：1.5m
Sort between the tire based on the integrated value of real vehicle noise fest：(good) A<B<C<D<E (poor)
Sort between the tire of the pitch noise (once) based on real vehicle noise fest：(good) A ≒ B<C≒E<D (poor)
<Table 2>
Tyre for heavy load
Tire size：275/80R22.5
Wheel rim：7.50J×22.5
It is intrinsic pressure：900kPa
Load：23.7kN
Rotary drum radius Rb：1.5m
Sort between the tire based on the integrated value of real vehicle noise fest：(good) F<G<H<I<J (poor)
Sort between the tire of the pitch noise (once) based on real vehicle noise fest：(good) F ≒ G<H<I<J (poor)
<The correlation coefficient of integrated value>
The sequence on the platform based on the present application between each tire of the integrated value of noise fest and based on JASO specifications
Real vehicle noise fest integrated value each tire between the dependency of sequence compare, and calculate and compare and be based on
The correlation coefficient of noise fest and the integrated value based on real vehicle noise fest on platform.
<The correlation coefficient of pitch noise (once)>
Based on the present application platform on noise fest pitch noise (once) each tire sequence and be based on
The dependency of the sequence between each tire of the pitch noise (once) of the real vehicle noise fest of JASO specifications is compared, and
Calculate and compare the correlation coefficient with the pitch noise (once) based on real vehicle noise fest based on noise fest on platform.
<Ground connection shape ratio>
The F tires of A tires and table 2 for table 1, have calculated ground connection shape value Sa when contacting with rotary drum and on road surface
The ratio Sa/Sb of ground connection shape value Sb during traveling.Additionally, as shown in figure 4, ground connection shape value Sa, Sb, utilizes farthest away from wheel abnormal red skin of infant
Tire circumferential lengths Ls and the crown closest to tire equator of the middle position on the tire axial in the tire-shoulder land portion in road
The ratio Ls/Lc of tire circumferential lengths Lc of the middle position on the tire axial in land portion is representing.
Test result is shown in table 1 and table 2.
Table 1
Table 2
It is able to confirm that according to test result：Compared with conventional example and comparative example, noise fest result based on embodiment with
Dependency based on the result of the test of real vehicle noise fest is higher.In addition, can learn：When it is described than Sa/Sb be 95%～
When 105% (i.e., it is possible to saying that ground connection shape when contacting with rotary drum is approximate with ground connection shape when travelling on road surface), make an uproar on platform
Sound tests the integrated value with real vehicle noise fest, and especially the dependency of pitch noise is higher, works well.Additionally, also making speed
Degree, tire size change and become texture depth to turn to 0.6mm or 0.8mm and carried out noise fest, as a result show, and be based on
The result of the test of conventional example and comparative example is compared, and the dependency based on the result of the test of the device of the present invention is higher.In addition, also right
Water drift performance, polishing machine, turn performance etc. are tested, and as a result show, the dependency of embodiment is better than the phase of comparative example
Guan Xing.
Claims (18)
1. the bench test device of a kind of tire, for the performance test for carrying out tire indoors, the bench test of the tire is filled
Put including：The rotary drum that can be rotated, makes tire contact with the rotary drum and tire is travelled on the rotary drum；Support shaft, the supporting
The tire for being assemblied in wheel rim is remained can rotate in a cantilever fashion by axle；And driver element, the driver element pair
The rotary drum or the support shaft carry out rotation driving, and the bench test device of the tire is characterised by,
The rotary drum has inner peripheral surface, and the inner peripheral surface possesses the simulated roadway for tire running,
In the section including drum rotating axle center, the inner peripheral surface has arc-shaped face, and the arc-shaped face is to rotary drum radial direction
What smooth circular arc protruding outside was formed continuously,
Width of the length on the rotary drum axial direction in the arc-shaped face at least above the arc-shaped face and the tire interface.
2. the bench test device of tire according to claim 1, it is characterised in that
In the section, radius of curvature R a in the arc-shaped face is 1.70 times～2.40 times of rotary drum radius Rb, the rotary drum
Radius Rb is the radius of the outermost points of the rotary drum radial direction from drum rotating axle center to the arc-shaped face.
3. the bench test device of tire according to claim 1 and 2, it is characterised in that
The simulated roadway is any one in asphalt road, concrete road and gravel road.
4. the bench test device of tire according to claim 1 and 2, it is characterised in that
The simulated roadway is 0.40mm～0.80mm according to texture depth defined in ISO10844.
5. the bench test device of tire according to claim 1 and 2, it is characterised in that
The simulated roadway is included in rotary drum circumference the multiple dividing bodies for being divided and being pasted in the way of it can change.
6. the bench test device of tire according to claim 5, it is characterised in that
Length of the dividing body in rotary drum circumference is different.
7. the bench test device of tire according to claim 1 and 2, it is characterised in that
The driver element is covered by sound-absorbing material.
8. the bench test device of tire according to claim 1 and 2, it is characterised in that
Have：The holding unit of the water on Sprinkler and the holding simulated roadway to simulated roadway watering.
9. the bench test device of tire according to claim 1 and 2, it is characterised in that
Also include the measuring unit of the performance of measurement tire,
The measuring unit includes the force cell of measurement load, and the force cell is arranged on the support shaft supports
The inner peripheral surface of the bearing to rotate freely.
10. the bench test device of tire according to claim 1 and 2, it is characterised in that
Also have：Rotation speed control device, the controlled loading of the rotary speed of the driver element are controlled in the rotary drum
The contact load control apparatus of load and the rotating direction controller of the direction of rotation of the control tire.
The bench test device of 11. tires according to claim 1 and 2, it is characterised in that
The arc-shaped face is arranged on the equator of the inner peripheral surface.
A kind of 12. tyre performance test methods, using the bench test device of tire the performance test of tire is carried out indoors,
The tyre performance test method is characterised by, including following operation：
Traveling operation, makes the tire for being assemblied in wheel rim contact with the inner peripheral surface of the rotary drum that can be rotated and in the inner peripheral surface of the rotary drum
Upper traveling, wherein the rotary drum possesses simulated roadway in the inner peripheral surface；With
Measurement operation, measures the performance during the traveling of the tire,
In the section including drum rotating axle, the inner peripheral surface has arc-shaped face, and the arc-shaped face is outside to rotary drum footpath
What the smooth circular arc that side projects was formed continuously,
Width of the length on the rotary drum axial direction in the arc-shaped face at least above the arc-shaped face and the tire interface.
13. tyre performance test methods according to claim 12, it is characterised in that
Radius of curvature R a in the arc-shaped face is 1.70 times～2.40 times of rotary drum radius Rb, and rotary drum radius Rb is from rotary drum
Radius of the center of rotary shaft to the outermost points of the rotary drum radial direction in the arc-shaped face.
The 14. tyre performance test methods according to claim 12 or 13, it is characterised in that
The traveling operation includes making the drum rotating and making the tire with different from the rotary speed of the rotary drum
The operation of speed traveling,
The measurement operation is that the coefficient of friction for measuring the friction produced by the rotary drum and the speed difference of the tire rubs
Wipe coefficient measurement operation.
The 15. tyre performance test methods according to claim 12 or 13, it is characterised in that
The traveling operation includes one side to the tire imposed load, while making the tire to direction of rotation relative to described
The operation of the different direction running in the direction of rotation of rotary drum,
The measurement operation is the cross force measurement operation of the cross force that measurement results from the tire.
The 16. tyre performance test methods according to claim 12 or 13, it is characterised in that
Also include the watering operation to simulated roadway watering,
The traveling operation is included on the simulated roadway after being sprinkled water while to the tire imposed load, while making the wheel
Tire to direction of rotation relative to the different direction running in the direction of rotation of the rotary drum operation,
The measurement operation is the cross force measurement operation of the cross force that measurement results from the tire.
The 17. tyre performance test methods according to claim 12 or 13, it is characterised in that
The measurement operation is the mass measurement operation of the difference of the quality of the tire before and after measurement traveling operation.
The 18. tyre performance test methods according to claim 12 or 13, it is characterised in that
The measurement operation is the noise measurement operation of measurement noise.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-172266 | 2012-08-02 | ||
| JP2012172266A JP5616931B2 (en) | 2012-08-02 | 2012-08-02 | Tire bench test apparatus and tire performance test method using the same |
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| Publication Number | Publication Date |
|---|---|
| CN103575551A CN103575551A (en) | 2014-02-12 |
| CN103575551B true CN103575551B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310244399.3A Active CN103575551B (en) | 2012-08-02 | 2013-06-19 | Tire bench testing apparatus and tire performance testing method using the same |
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| Country | Link |
|---|---|
| JP (1) | JP5616931B2 (en) |
| KR (1) | KR102036358B1 (en) |
| CN (1) | CN103575551B (en) |
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| JP5616931B2 (en) | 2014-10-29 |
| CN103575551A (en) | 2014-02-12 |
| KR20140018784A (en) | 2014-02-13 |
| KR102036358B1 (en) | 2019-11-26 |
| JP2014032087A (en) | 2014-02-20 |
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