CN208290863U

CN208290863U - A kind of super race racing-car tyre structure suitable for enduro

Info

Publication number: CN208290863U
Application number: CN201820681546.1U
Authority: CN
Inventors: 张睿歆; 朱敏; 李君�
Original assignee: Anhui Giti Radial Tire Co Ltd
Current assignee: Anhui Giti Radial Tire Co Ltd
Priority date: 2018-05-08
Filing date: 2018-05-08
Publication date: 2018-12-28
Anticipated expiration: 2028-05-08

Abstract

The utility model provides a kind of super race racing-car tyre structure suitable for enduro, including tyre surface, casing ply, sidewall and bead part, the tyre surface is successively divided into the first hat arc, the second hat arc and third hat arc, the outer diameter TR of the first hat arc on the section of tyre equatorial, from the intersection point of equatorial plane and tire tread contour to shoulder portion section start₁With arc length TL₁, second hat arc outer diameter TR₂With arc length TL₂, third hat arc outer diameter TR₃With arc length TL₃Between have TR₁>TR₂>TR₃, TL₁>TL₂>TL₃And TR₁/TL₁>TR₂/TL₂>TR₃/TL₃Relationship, the relationship of the vertical range H-drop and tire section height SH of the central point of the tyre surface end-point distances crown of the tread width TDW is H-drop/SH < 0.15.The utility model uses specific tyre surface size to optimize ground connection shape, increases contact area, improves grip performance.

Description

A kind of super race racing-car tyre structure suitable for enduro

Technical field

The utility model belongs to tyre technology, and in particular to a kind of super race racing-car tyre knot suitable for enduro Structure.

Background technique

Racing-car tyre, due to its unconventional instruction, harsh, acceleration, the stress, heat born of use environment It is higher by much Deng relatively civilian tire, it is even more so to surpass race racing-car tyre.Circumferential belt tension variation, the deformation of shoulder, sidewall Flexion, the coincidence of endpoint etc., be easy to cause stress to concentrate and gathered with heat, make tire when fierce racing track environment drives It is easy to appear phenomenon of blowing out.Common radial casing ply is 90 °, can not combine cornering stiffness, radial rigidity, longitudinal direction The balance of rigidity, most casing ply profile carry out structure design using natural equilibrium profile theory, can not provide high-power match Road holding needed for vehicle and handling.And tread rubber gage size is larger, instantaneous steering characteristic is bad.General racing car tire, by It is controlled in the ratio of profile, the size and angle of internal material, the influence of many factors such as endpoint distribution of component.It is super in collocation Race car applications are run when endurance competition, generally existing insufficient to shock proof anti-fatigue performance, stress distribution is uneven, contact area Bad, dimensional stability is bad, and phenomena such as breach defect easily occurs in tyre surface；And general racing car tire generally has in design Emphasis in terms of certain, often individual pen Lap Time is excellent in or endurance performance is good, and a kind of knot of few tires Structure design can take into account the performance of the two with flying colors.

Utility model content

The utility model provides a kind of super race racing-car tyre structure suitable for enduro, to solve in above-mentioned background technique The problem of proposition.

To achieve the above object, the utility model provides the following technical solutions:

A kind of super race racing-car tyre structure suitable for enduro, including tyre surface, casing ply, sidewall and bead part, institute Tyre surface is stated successively to be divided on the section of tyre equatorial, from the intersection point of equatorial plane and tire tread contour to shoulder portion section start First hat arc, the second hat arc and third are preced with arc, the outer diameter TR of the first hat arc₁With arc length TL₁, second hat arc outer diameter TR₂With Arc length TL₂, third hat arc outer diameter TR₃With arc length TL₃Between have TR₁>TR₂>TR₃, TL₁>TL₂>TL₃And TR₁/TL₁>TR₂/ TL₂>TR₃/TL₃Relationship, the vertical range H-drop of the central point of the tyre surface end-point distances crown of the tread width TDW with The relationship of tire section height SH is H-drop/SH < 0.15.

Further, the tire section height SH includes upper sidewall height H₁With lower sidewall height H₂, the lower sidewall height Spend H₂Relationship with tire section height SH is 0.45 < H₂/ SH < 0.5.

Further, the bead part includes steel bead wire and triangle rubber, and the casing ply includes carrying out to institute's bead part The first casing ply and the second casing ply of anti-package are equipped between the bead part outside and second casing ply for enhancing wheel The heel fabric of tire rigidity and intensity.

Further, the heel fabric uses the compound dipped type cord fabric of aramid fiber, and setting angle is 43 °~47 °.

Further, the upper extreme point of the heel fabric to the first casing ply anti-package endpoint vertical range d, the first curtain The anti-package endpoint of layer of cloth is to the vertical range c of the outer end point of heel fabric, the outer end point the hanging down to triangle rubber endpoint of heel fabric Directly distance b, triangle rubber endpoint to the second casing ply anti-package endpoint vertical range a between with a=b=c=d relationship, The triangle rubber endpoint to the second casing ply anti-package endpoint distance a and lower sidewall height H₂Between relationship be a/H₂> 0.1, the height of the upper extreme point of the heel fabric and the relationship of tire section height SH are H1F/SH < 0.4.

The utility model is using the crown arc arc length of optimization and the proportionate relationship of arc radius, to optimize ground connection shape, increases Contact area is uniformly distributed ground connection, improves grip performance and handling；The utility model casing ply uses nylon impregnation curtain Sub- cloth 1260D/2, cord angle design are 76 °~80, and lateral rigidity, longitudinal rigidity and the radial rigidity of balanced tire mention Rise acceleration, braking and the handling of tire；The tyre surface can be fitted high-precision tyre surface using the design of tread wrapping formula, simultaneously There is no tread joint using tread wrapping, avoids the occurrence of tire and breach occur when lane drives；Upper sidewall height H1 > lower sidewall Height H2 moves down the position of section the widest part, disperses tire shoulder stress；Each endpoint of bead part is uniformly distributed, and eliminates bead Stress brought by each parts connection terminals is concentrated, and heat accumulation is mitigated.

Detailed description of the invention

Fig. 1 is the contour structure figure of the utility model；

Fig. 2 is the cross-section structure of the utility model；

Fig. 3 is the bead part cross-section structure of the utility model；

In figure: 1, tyre surface；2, band；3, belt；4, casing ply；5, sidewall；6, heel fabric；7, triangle rubber；8, Steel bead wire.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

As depicted in figs. 1 and 2, the super race racing-car tyre suitable for enduro includes tyre surface 1, band 2, belt 3, casing ply 4, sidewall 5, bead part and casing ply, the bead part include steel bead wire 8, triangle rubber 7 and heel fabric 6；The casing ply 4 includes the first casing ply and the second casing ply that anti-package is carried out to the bead part；The heel fabric is used In enhancing tire stiffness and intensity, it is set on the outside of the bead part between second casing ply, and heel fabric setting Angle is 43 °~47 °, and tyre rim position is made to form the entirety that a trap is closed, and the triangle rubber and steel bead wire are wrapped up Come.

As shown in Figure 1, SH is tire section height, H₁For upper sidewall height, H₂For lower sidewall height.

The tyre surface 1 is made using very-high performance hot melt race tire using high-dispersion white carbon black and nanoscale super-normal structure black Tread rubber loss tangent is 0.3~0.4, guarantees the heating performance and grip performance of tire, the sizing material that the tyre surface uses Tire is avoided the occurrence of under conditions of racing track fierceness drives using the design of tread wrapping formula and breach occurs, while the tyre surface is in Heart position thickness control is in 3.6~3.8mm, and shoulder position thickness control is in 4.8~5.0mm, it is ensured that tyre surface meets enduro Abrasion demand, while guaranteeing the good heat dissipation of tyre surface, it avoids heat accumulation in use and causes sizing material failure.

As shown in Figure 1, the tyre surface on the section of tyre equatorial, from the intersection point of equatorial plane and tire tread contour to Shoulder portion section start is successively divided into the first hat arc, the second hat arc and third hat arc, the outer diameter TR of the first hat arc₁And arc length TL₁, second hat arc outer diameter TR₂With arc length TL₂, third hat arc outer diameter TR₃With arc length TL₃Between have TR₁>TR₂>TR₃, TL₁ >TL₂>TL₃And TR₁/TL₁>TR₂/TL₂>TR₃/TL₃Relationship, while the tyre surface end-point distances crown of the tread width TDW The relationship of the vertical range H-drop and tire section height SH of central point are H-drop/SH < 0.15.The tire section is high Spending SH includes upper sidewall height H₁With lower sidewall height H₂, the lower sidewall height H₂Relationship with tire section height SH is 0.45 < H₂/ SH < 0.5.

Under same size, the tire made with the tire of production described above and conventional design is in contact area and grabs ground The comparison of power is tested, and experimental result is as shown in table 1 below.

As known from Table 1, routine is superior on contact area and road holding using the tire of structure described in the utility model Design.

In the present invention, preferably lower sidewall height H₂Relationship with tire section height SH is 0.45 < H₂/ SH < 0.5。

Band 2 described in the utility model is used for banding belt, it is preferred to use Double wound formula can be limited preferably Tire size is stablized in expansion of the race tire processed after heat；Simultaneously when tire is by impact, can preferably it protect Casing ply.

Belt 3 described in the utility model uses HMLS terylene 4x0.21 steel wire, and angle is preferably 28 °~ 32 °, the belt includes the first belt and the second belt, wherein the thickness W1B and the second band of the first band beam layer The thickness W2B of beam layer and relationship is as follows between tread width: W1B-W2B=10~15mm, W1B/TDW=92%~ 94%, to mitigate the weight of tire, increase the rigidity of tyre crown, while promoting high speed performance and manipulation stabilization.

The casing ply 4 uses Dipped Nylon Tyre Cord Fabric 1260D/2, and cord angle is preferably 76 °~80 °, to optimize Cord force increases casing ply torsion stiffness, cornering stiffness and aligning stiffness, and tire is made to have good instantaneous steering characteristic. The sidewall 5 uses warping strength sizing material using single composite ultra-thin film type, increases the warping strength characteristic of tire sidewall, controls Heat rate.

The steel bead wire 8 twines formula wire loop, non junction using 3+4+5+4+3 is mono-, and mitigates quality, promotes intensity；Institute Triangle rubber 7 is stated using the size design of low triangle rubber, the tire section height SH of height HBF < 0.2 vacates more skies to sidewall Between, to buffer sidewall flexion；The heel fabric 6 uses the compound dipped type cord fabric of aramid fiber, increases tyre bead portion rigidity, improves behaviour Sensitivity is controlled, ensures the quick response for turning to and braking when driving, and is conducive to alleviate flexion bring stress concentration.

In Fig. 3, appended drawing reference H1F represents the upper extreme point of heel fabric, and H1P represents the anti-package endpoint of the first casing ply, H2F represents the lower extreme point of heel fabric, and HBF represents the endpoint of triangle rubber, and H2P represents the anti-package endpoint of the second casing ply, described The upper extreme point of heel fabric to the first casing ply anti-package endpoint vertical range be d, the anti-package endpoint of first casing ply Vertical range to the outer end point of heel fabric is c, and the vertical range of the outer end point to the triangle rubber endpoint of the heel fabric is B, the vertical range of the anti-package endpoint of the triangle rubber endpoint to the second casing ply are a.In the utility model, described a, b, c, d Between relationship be a=b=c=d, and a and lower sidewall height H₂Between relationship be a/H₂> 0.1, the heel fabric The height of upper extreme point and the relationship of tire section height SH are H1F/SH < 0.4；It is each that above-mentioned design can effectively eliminate bead Stress brought by parts connection terminals is concentrated, and endpoint location stress dispersibility is improved, to mitigate heat during tire running Accumulation, so that reducing endpoint location stress concentrates the destruction caused by tire.

True road traveling situation is simulated indoors, and the tire and conventional tire to the utility model production are in experiment 12h The heat of bead is detected afterwards, and records final tire and being taken time for explosion situation occur, and details see the table below 2.

From table 2 it can be seen that the heat of bead is much smaller than into after crossing dispersion using the tire of the utility model structure Routine is related to, while the time that breakage occurs in tire extends one times or more, greatly improves the performance and used life of tire.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims

1. a kind of super race racing-car tyre structure suitable for enduro, including tyre surface, casing ply, sidewall and bead part, described Tyre surface is successively divided on the section of tyre equatorial, from the intersection point of equatorial plane and tire tread contour to shoulder portion section start One hat arc, the second hat arc and third are preced with arc, which is characterized in that the outer diameter TR of the first hat arc₁With arc length TL₁, the second hat arc Outer diameter TR₂With arc length TL₂, third hat arc outer diameter TR₃With arc length TL₃Between have TR₁>TR₂>TR₃, TL₁>TL₂>TL₃And TR₁/ TL₁>TR₂/TL₂>TR₃/TL₃Relationship, the vertical range H- of the central point of the tyre surface end-point distances crown of the tread width TDW The relationship of drop and tire section height SH is H-drop/SH < 0.15.

2. super race racing-car tyre structure according to claim 1, which is characterized in that the tire section height SH includes upper Sidewall height H₁With lower sidewall height H₂, the lower sidewall height H₂Relationship with tire section height SH is 0.45 < H₂/ SH < 0.5。

3. super race racing-car tyre structure according to claim 1, which is characterized in that the bead part include steel bead wire and Triangle rubber, the casing ply includes the first casing ply and the second casing ply that anti-package is carried out to institute's bead part, outside the bead part The heel fabric for enhancing tire stiffness and intensity is equipped between side and second casing ply.

4. super race racing-car tyre structure according to claim 3, which is characterized in that the heel fabric is compound using aramid fiber Dipped type cord fabric, setting angle are 43 °~47 °.

5. super race racing-car tyre structure according to claim 3, which is characterized in that the upper extreme point of the heel fabric to The distance d of the anti-package endpoint of one casing ply, the distance c of the outer end point of the anti-package endpoint to heel fabric of the first casing ply, rim of the mouth The outer end point of infantees to the distance b of triangle rubber endpoint, the anti-package endpoint of triangle rubber endpoint to the second casing ply distance a between have There are the relationship of a=b=c=d, the distance a and lower sidewall height H of the anti-package endpoint of the triangle rubber endpoint to the second casing ply₂ Between relationship be a/H₂> 0.1.