CN108501622A

CN108501622A - A kind of UHP tires promoting wetland performance

Info

Publication number: CN108501622A
Application number: CN201810617047.0A
Authority: CN
Inventors: 高楠
Original assignee: Anhui Giti Radial Tire Co Ltd
Current assignee: Anhui Giti Radial Tire Co Ltd
Priority date: 2018-06-13
Filing date: 2018-06-13
Publication date: 2018-09-07

Abstract

The invention discloses a kind of UHP tires promoting wetland performance, including the tyre surface that crown arc overall length is TDW, the longitudinal major trough circumferentially extended along tire is offered on the tyre surface, form the pattern block that is circumferentially extended along tire between longitudinal major trough, there are the relationships of 0.047≤TP/TDW≤0.049 between the difference in height TP between the wide SN of nominal section of the overall length TDW and tire of the crown arc there are the overall length TDW and crown arc central point of the relationship of 0.80≤TDW/SN≤0.82 and the crown arc relative to crown end of arc.The convex design that each pattern block of the present invention is thickeied, so that raised position is presented in pattern block ground connection edge, compensating for tread mix contraction causes pattern block edge fit edge the defect of concave surface occur, simultaneously, convex surface ground connection edge improves the one's water breaks ability of tire, it effectively avoids that neatly occurs in wheel driving process, improves the security and stability of tire used.

Description

A kind of UHP tires promoting wetland performance

Technical field

The present invention relates to tyre technology, specifically a kind of UHP tires for promoting wetland performance.

Background technology

With flourishing for market for automobiles, automobile more and more becomes traffic work important in people's daily life Tool, the safety traffic of vehicle and tire are closely related, and UHP is the abbreviation of Ultra High Performance, and UHP tires are i.e. super High-performance tire is usually assemblied in luxury, sedan-chair and runs etc. on vehicles, and the requirement to the wetland performance and handling of tire is more It is harsh.

When automobile the rainy day when driving, since there are ponding on road surface, if the ponding between tire and road surface cannot be had in time The discharge of effect will make the braking distance of vehicle elongated；And when hydraulic pressure is excessively high, can also tire be made to float, and then reduced Friction between tire and road surface easily causes automobile phenomena such as neatly occurs on ponding road surface, or even causes traffic accident.

Therefore, the handling that UHP tires must be taken into account while promoting UHP tire wetland performances, just can guarantee that tire exists The security and stability of wetland when driving.In the prior art, under the premise of taking into account tire handling, tire wetland can be improved Can be actually rare, cause the security and stability that tire is travelled in wetland to be unable to get guarantee, the use demand of automobile cannot be met.

Invention content

The purpose of the present invention is to provide a kind of UHP tires promoting wetland performance, to solve to carry in above-mentioned background technology The problem of going out.

To achieve the above object, the present invention provides the following technical solutions：

A kind of UHP tires promoting wetland performance, including crown arc overall length are the tyre surface of TDW, are offered on the tyre surface Along longitudinal major trough of tire circumferentially extending, the pattern block circumferentially extended along tire is formed between longitudinal major trough,

There are the passes of 0.80≤TDW/SN≤0.82 between the wide SN of nominal section of the overall length TDW and tire of the crown arc There are 0.047 between the difference in height TP of crown end of arc by the overall length TDW and crown arc central point of system and the crown arc The relationship of≤TP/TDW≤0.049；

On the section of tyre equatorial the contour curve of the tyre surface from the intersection point of equatorial plane and tire tread contour to The second contour curve and arc length that the tyre surface end of shoulder portion is divided into the first profile curve that arc length is TW1, arc length is TW2 be The third contour curve of TW3, between described TW1, TW2, TW3 and 0.5TDW there are 0.40≤TW1/ (0.5TDW)≤0.42, The proportionate relationship of 0.26≤TW2/ (0.5TDW)≤0.28,0.31≤TW3/ (0.5TDW)≤0.33.

As a further solution of the present invention：The longitudinal direction major trough includes first opened up successively on tire width direction The longitudinal major trough of longitudinal major trough, second longitudinal direction major trough, third longitudinal direction major trough and the 4th；The width of the first longitudinal direction major trough be a, The width of second longitudinal direction major trough is b, the width of third longitudinal direction major trough is c, the width of the 4th longitudinal major trough is d, there is (a/ TDW)：(b/TDW)：(c/TDW)：(d/TDW)=0.09：0.17：0.17：0.13 relationship.

As a further solution of the present invention：The pattern block includes that outside pattern block, first longitudinal direction major trough and second are vertical Crown pattern block that the first pattern block on tire shoulder for being limited to major trough, second longitudinal direction major trough are limited with third longitudinal direction major trough, the The second pattern block on tire shoulder and side pattern block that three longitudinal major troughs and the 4th longitudinal major trough limit.

As a further solution of the present invention：The pattern block and the contact surface on ground are convex surface and pattern block profile is bent The intersection point of line and both sides longitudinal direction major trough contour curve is respectively P₁And P₂；The central point of the convex profile curve is located at P₁And P₂ The midpoint P of line₀Surface and convex profile curve central point ratio P₀The distance that point is higher by is h, the value range of the h For 0.20≤h≤0.30mm.

As a further solution of the present invention：First pattern block on tire shoulder is equipped with more than one equipped with inclination steel disc Inclined groove；The inclined groove is tilted to the upper right side of first longitudinal direction major trough close second longitudinal direction major trough side, inclined groove Lower-left end connect with first longitudinal direction major trough, upper right side does not connect with second longitudinal direction major trough.

As a further solution of the present invention：The junction of the inclined groove and first longitudinal direction major trough offers corner cut Slot；The corner cut slot is vee gutter.

As a further solution of the present invention：It is oblique equipped with oblique steel disc that more than one is offered on the crown pattern block To groove；The oblique groove is tilted to the lower right of the close third longitudinal direction major trough side of second longitudinal direction major trough, oblique groove Left upper end connects with second longitudinal direction major trough, bottom righthand side connects with third longitudinal direction major trough.

As a further solution of the present invention：More than one lateral major trough is offered on second pattern block on tire shoulder； The transverse direction major trough is tilted to the upper right side of the close 4th longitudinal major trough side of third longitudinal direction major trough, the lower-left end of lateral major trough with Third longitudinal direction major trough communicates, upper right side is communicated with the 4th longitudinal major trough.

As a further solution of the present invention：Second pattern block on tire shoulder is close to the side of third longitudinal direction major trough and close The side of 4th longitudinal major trough also offers two rows of triangular slots respectively, close to third longitudinal direction major trough row's triangular slot it is shallow Ditch end and third longitudinal direction major trough be connected, close to the 4th longitudinal major trough row's triangular slot shallow ridges end and the 4th longitudinal major trough It is connected.

As a further solution of the present invention：The oblique groove is row that is intermediate deep and being gradually become shallower as from centre to both ends Water groove；The transverse direction major trough be from third longitudinal direction major trough abutment end to the row gradually deepened with the 4th longitudinal major trough abutment end Water groove.

Compared with prior art, the beneficial effects of the invention are as follows：

1, the convex design that each pattern block is thickeied so that pattern block is grounded edge and raised position is presented, and compensates for Tread mix contraction causes pattern block edge fit edge the defect of concave surface occur, meanwhile, convex surface ground connection edge improves the one's water breaks of tire Ability effectively avoids that neatly occurs in wheel driving process, improves the security and stability of tire used；

2, according to hydromechanical principle, each pattern block ground connection mark is more also easy to produce resistance when being in convex surface in concave surface ratio, And the one's water breaks ability and drainability of convex surface ground connection mark are superior to concave surface ground connection mark, may make tire in driving process In, the reservoir formed in tyre surface direction of advance can be dispersed quickly, is avoided that neatly occurs, is improved the peace during tire running Quan Xing；

There are 0.40≤TW1/ (0.5TDW)≤0.42,0.26≤TW2/ between TW1, TW2, TW3 and 0.5TDW The proportionate relationship of (0.5TDW)≤0.28,0.31≤TW3/ (0.5TDW)≤0.33, reduce the ground width of tire tread, The effective grounding area of tire is reduced, simultaneously so that the pressure of tire tread ground area increases, and improve tire grabs ground Power effectively prevents tire and hydroplaning phenomena occurs in use；

3, the overall length TDW of crown arc and crown arc central point exist between the difference in height TP of crown end of arc The relationship of 0.047≤TP/TDW≤0.049 may make the hat of tire curved by being preferably 0.048 by the ratio of TP/TDW Rate size is suitable, and ensures tire tread and the rounded ground connection shape in ground, improves the one's water breaks of tire in use Ability；

4, width c, Yi Ji of the width a of first longitudinal direction major trough, the width b of second longitudinal direction major trough, third longitudinal direction major trough The width d of four longitudinal major troughs, exists (a/TDW)：(b/TDW)：(c/TDW)：(d/TDW)=0.09：0.17： 0.17：0.13 Relationship so that the Hai Lu ratios of tire are controlled 36.3% or so so that the groove gross area of tire obtains excellent with the ground connection gross area Change, by the width for rationally controlling each longitudinal major trough so that the groove gross area of tire is controlled with contact area reasonable Ratio range in so that the pattern block rigidity between each adjacent longitudinal major trough satisfies the use demand；

5, the rigidity that is distributed in the outside pattern block and the first pattern block on tire shoulder on the outside of tire is strong, is distributed in side pattern block It is weak with the rigidity of the second pattern block on tire shoulder so that the distribution of each pattern block meets the product property of UHP tires, it is ensured that The good drainage performance of tire and braking ability, and ensure that the handling of tire is not suffered a loss；

6, it is embedded in inclined groove and tilts steel disc and open up corner cut slot in inclined groove side, the tire that can effectively shorten exists The water conservancy diversion time of wetland when driving, assistant longitudinal major trough improve the drainage efficiency during tire running；

7, the shallow ridges end of two rows of triangular slots is connected with third longitudinal direction major trough and the 4th longitudinal major trough respectively, reduces wheel For tire in wetland driving process, flow, which is gathered in two rows of triangular slots of tire tread, generates vortex phenomenon, improves tire Using effect；

8, the shallower oblique steel disc of the inclination steel disc and depth of setting is the steel disc of thinner thickness, has good water conservancy diversion Effect, meanwhile, the water conservancy diversion time can be effectively shortened by tilting the corner cut slot that steel disc and first longitudinal direction major trough joint open up, and be improved longitudinal The drainage efficiency of major trough, lateral major trough etc.；

9, the lateral major trough and two rows of grooves that are opened up on the second pattern block on tire shoulder improve the drainability of tire, meanwhile, Shallow ridges end of longitudinal major trough with lateral major trough and groove is connected, and alleviates tire and generates vortex when driving now in wetland As, and then reduce the draining of the longitudinal major trough of vortex interference；

10, the larger distribution density for effectively reducing pattern block of spacing between adjacent transverse major trough, ensure that tire The rigidity in face, meanwhile, the larger spacing between adjacent oblique steel disc avoids the draining to longitudinal major trough and generates interference.

Description of the drawings

Fig. 1 is the tyre surface sectional drawing of tire of the present invention.

Fig. 2 is the ground pressure comparison diagram of existing tire and tire of the present invention.

Fig. 3 is the ground connection shape comparison diagram of existing tire and tire of the present invention.

Fig. 4 is the convex configuration figure of tire tread block of the present invention.

Fig. 5 is that the ground connection edge contrast of existing tire tread block and tire tread block of the present invention schemes.

Fig. 6 is the overall structure figure of tire tread of the present invention.

Fig. 7 is the partial enlarged view at Fig. 6 A.

Fig. 8 is the vortex comparison diagram of existing tire and tire of the present invention formed on tyre surface in wetland driving process.

In figure：The longitudinal major trough of 1- first longitudinal directions major trough, 2- second longitudinal directions major trough, 3- thirds longitudinal direction major trough, 4- the 4th, 5- the One pattern block on tire shoulder, 6- crowns pattern block, the second pattern block on tire shoulders of 7-, 8- transverse directions major trough, the oblique steel discs of 9-, 10- tilt steel disc, 11- corner cuts slot, 12- triangular slots, 13- side patterns block, pattern block on the outside of 14-.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

The present invention is by rationally designing the contour shape of tire tread, rationally controlling each section of contour curve arc length and entire wheel Tire tread width, and open up longitudinal major trough of a plurality of width suitable in the tyre surface of tire, opened up on each pattern block of tire Lateral major trough 8, oblique groove, inclined groove etc. so that entire tire overall structure is adapted and then improves the draining of tire Performance, one's water breaks performance, braking ability and earth-grasping force etc., avoid tire that hydroplaning phenomena occurs in use, improve tire Wetland performance.

Embodiment one：

It please refers to Fig.1 and Fig. 2, a kind of UHP tires promoting wetland performance, including crown arc overall length is the tyre surface of TDW, institute State between the wide SN of nominal section of the overall length TDW and tire of crown arc that there are the relationships of 0.80≤TDW/SN≤0.82, preferably The ratio of TDW/SN is 0.81；The tyre surface of tire is equably divided into crown arc length for the two of 0.5TDW by the equatorial plane CL of tire The tyre crown arc length of part, each section is the half of tyre crown arc overall length and the portion that each crown arc length is 0.5TDW It includes the three sections of contour curves to connect successively from equatorial plane CL to shoulder portion to divide so that the tire on the section of tyre equatorial Tyre surface end of the contour curve in face from the intersection point of equatorial plane and tire tread contour to shoulder portion is divided into the first round that arc length is TW1 The third contour curve that the second contour curve and arc length that wide curve, arc length are TW2 are TW3, described TW1, TW2, TW3 with There are 0.40≤TW1/ (0.5TDW)≤0.42,0.26≤TW2/ (0.5TDW)≤0.28,0.31≤TW3/ between 0.5TDW The ratio of the proportionate relationship of (0.5TDW)≤0.33, preferably TW1/ (0.5TDW) is that the ratio of 0.41, TW2/ (0.5TDW) is 0.27, the ratio of TW3/ (0.5TDW) is 0.32, reduces the ground width of tire tread, reduces the effective grounding face of tire Product, simultaneously so that the pressure of tire tread ground area increases, and improves the earth-grasping force of tire, effectively preventing tire makes With hydroplaning phenomena occurs in the process.

It please refers to Fig.1 and Fig. 3, the intersection point of the crown arc that overall length is TDW and equatorial plane CL are the central point of crown arc, overall length The endpoint at tire shoulder is extended to inside and outside both sides for the crown arc of TDW, the central point of crown arc is with the endpoint of crown arc in height Drop on direction is TP, i.e., the difference in height between the minimum endpoint of the peak of crown arc and crown arc is TP, the crown The overall length TDW and crown arc central point of arc between the difference in height TP of crown end of arc there are 0.047≤TP/TDW≤ 0.049 relationship, the preferably ratio of TP/TDW are 0.048, by being preferably 0.048 by the ratio of TP/TDW, may make tire Tyre surface obtains the sizeable curved rate of hat, ensure that tire tread and the rounded ground connection shape in ground, improves tire and exist One's water breaks ability during use.

Fig. 4-5 is please referred to, the longitudinal major trough circumferentially extended along tire is offered on the tyre surface, is formed between longitudinal major trough Along the pattern block of tire circumferentially extending, longitudinal major trough limits a flower between offering the longitudinal major trough of multiple and adjacent two Line block, each pattern block are circumferentially extended along tire, and from the section both sides contour curve of each pattern block and the longitudinal direction of both sides Major trough contour curve intersects at P respectively₁And P₂2 points, the contour curve of each pattern block is to P₁And P₂2 line evaginations Camber line, the central point and P of convex profile curve evagination₁And P₂The central point P of 2 lines₀On the same line and two centers The line and P of point₁And P₂2 lines are mutually perpendicular to, the central point and P of convex profile curve evagination₁And P₂In 2 lines The distance between heart point is h, i.e., the contact surface on the described pattern block and ground is that convex surface and pattern block contour curve and both sides are longitudinal The intersection point of major trough contour curve is respectively P₁And P₂；The central point of the convex profile curve is located at P₁And P₂The midpoint P of line₀ Surface and convex profile curve central point ratio P₀The distance that point is higher by is h, and the value range of the h is 0.20≤h ≤ 0.30mm, h are preferably 0.25mm；By the convex surface for setting the tyre surface of tire to convex, it is ensured that each pattern block It is grounded state of the edge in protrusion, meanwhile, according to hydromechanical principle, each pattern block ground connection mark is in convex surface in concave surface ratio When be more also easy to produce resistance, and the one's water breaks ability of convex surface ground connection mark and drainability be superior to concave surface ground connection mark, it can be achieved that In the process of moving, the reservoir formed in tyre surface direction of advance can be dispersed quickly tire, is effectively prevented tire and is being run over Hydroplaning phenomena occurs in journey, improves the safety during tire running.

Embodiment two：

Referring to Fig. 6, offering longitudinal major trough on the tyre surface of tire and being limited by adjacent longitudinal major trough multiple Pattern block, it is described longitudinal direction major trough include the first longitudinal direction major trough 1 opened up successively on tire width direction, second longitudinal direction major trough 2, Third longitudinal direction major trough 3 and the 4th longitudinal major trough 4；The width of the first longitudinal direction major trough 1 is the width of a, second longitudinal direction major trough 2 Degree is b, the width of third longitudinal direction major trough 3 is c, the width of the 4th longitudinal major trough 4 is d, is existed (a/TDW)： (b/TDW)：(c/ TDW)：(d/TDW)=0.09：0.17：0.17：0.13 relationship so that 36.3% or so, the thus Hai Lu ratios of tire control So that the groove gross area of tire is optimized with the ground connection gross area；Meanwhile (a/TDW)： (b/TDW)：(c/TDW)：(d/ TDW)=0.09：0.17：0.17：In 0.13 relationship, each ratio value fluctuates in the range of caning be controlled in ± 0.3%, passes through Rationally control the width of each longitudinal major trough so that the groove gross area of tire is controlled with contact area in reasonably proportioning model In enclosing so that the pattern block rigidity between each adjacent longitudinal major trough satisfies the use demand.

As shown in following table one, integrates and weigh in horizontal and vertical two dimensions, the rigidity ratio inside flower of outside pattern block 14 The rigidity of line block 13 is good, and the rigidity of the first pattern block on tire shoulder 5 is better than the rigidity of the second pattern block on tire shoulder 7, also, outside pattern block 14 and first pattern block on tire shoulder 5 be distributed in the outside of tire, side pattern block 13 and the second pattern block on tire shoulder 7 and be distributed in tire Inside, the distribution of each pattern block meet UHP tires and need 14 rigid strong, 13 rigid phase pair of side pattern block of outside pattern block Weak product property, it is ensured that the good drainage performance of tire and braking ability, and ensure the handling of tire not by Loss.

Table one

The rational proportion of the gross area and the groove gross area is grounded by rationally controlling tire so that the UHP of wetland performance takes turns The Hai Lu of tire is than moderate, the good drainability of guarantee tire and one's water breaks ability, and ensure that the mileage travelled and tire of tire The sensitivity of response, meanwhile, the rigid reasonable layout of each pattern block ensure that the good handling of tire and braking It can, it is ensured that taken into account the handling of tire while tire best wetland performance.

Embodiment three：

Fig. 6-8 is please referred to, the pattern block includes that outside pattern block 14, first longitudinal direction major trough 1 and second longitudinal direction major trough 2 limit Crown pattern block 6 that the first pattern block on tire shoulder 5 for making, second longitudinal direction major trough 2 are limited with third longitudinal direction major trough 3, third are vertical The second pattern block on tire shoulder 7 and side pattern block 13, side pattern block 13 limited to major trough 3 and the 4th longitudinal major trough 4 is set It is remote in first longitudinal direction major trough 1 to set side in the 4th longitudinal major trough 4 far from the second pattern block on tire shoulder 7, the setting of outside pattern block 14 Side from the first pattern block on tire shoulder 5, tire when installing and using, the side equipped with side pattern block 13 close to car body, be equipped with The side of outside pattern block 14 is far from car body.

First pattern block on tire shoulder 5 is equipped with more than one equipped with the inclined groove for tilting steel disc 10, and inclined groove is opened The first pattern block on tire shoulder 5 is located at close to the side of first longitudinal direction major trough 1, the inclined groove is to first longitudinal direction major trough 1 close to The upper right side of two longitudinal 2 sides of major trough tilts, and the lower-left end of inclined groove connects with first longitudinal direction major trough 1, upper right side is not with the Two longitudinal major troughs 2 connect, and the big end of inclined groove structure triangular in shape, inclined groove lower left connects with first longitudinal direction major trough 1 And connect, upper right side in pointed shape and is generally in the centre position of the first pattern block on tire shoulder 5；The inclined groove and first is indulged Corner cut slot 11 is offered to the junction of major trough 1；The corner cut slot 11 is vee gutter.Inclination steel disc is embedded in inclined groove 10 and corner cut slot 11 is opened up in inclined groove side, can effectively shorten the water conservancy diversion time of tire when driving in wetland, assistant longitudinal Major trough improves the drainage efficiency during tire running.

More than one oblique groove that oblique steel disc 9 is housed is offered on the crown pattern block 6；The oblique groove to Second longitudinal direction major trough 2 is tilted close to the lower right of 3 side of third longitudinal direction major trough, left upper end and the second longitudinal direction major trough of oblique groove 2 connect, bottom righthand side connects with third longitudinal direction major trough 3, and the oblique groove is intermediate deep and is gradually become shallower as from centre to both ends Drainage groove, oblique groove is interior to be equipped with oblique steel piece 9, and the oblique groove that centre gradually becomes shallower as to both ends makes in oblique steel disc 9 Portion is installed relatively deep in oblique groove, and the both ends being connected respectively with second longitudinal direction major trough 2 and third longitudinal direction major trough 3 are oblique That is installed into groove is shallower, can effectively avoid the shadow that oblique steel disc 9 drains second longitudinal direction major trough 2 and third longitudinal direction major trough 3 It rings；

More than one lateral major trough 8 is offered on second pattern block on tire shoulder 7；The transverse direction major trough 8 is vertical to third It is tilted to major trough 3 close to the upper right side of the 4th 4 side of longitudinal major trough, lower-left end and 3 phase of third longitudinal direction major trough of lateral major trough 8 Logical, upper right side is communicated with the 4th longitudinal major trough 4, and the transverse direction major trough 8 is to be indulged from 3 abutment end of third longitudinal direction major trough to the 4th The drainage groove gradually deepened to 4 abutment end of major trough；Second pattern block on tire shoulder 7 close to the side of third longitudinal direction major trough 3 and Two rows of triangular slots 12 are also offered respectively close to the side of the 4th longitudinal major trough 4, close to row's triangle of third longitudinal direction major trough 3 The shallow ridges end of groove 12 is connected with third longitudinal direction major trough 3, close to the 4th longitudinal major trough 4 row's triangular slot 12 shallow ridges end It is connected with the 4th longitudinal major trough 4；The shallow ridges end of two rows of triangular slots 12 is longitudinal main with third longitudinal direction major trough 3 and the 4th respectively Slot 4 is connected, and reduces tire in wetland driving process, and flow is gathered in two rows of triangular slots 12 of tire tread and generates Vortex phenomenon improves the using effect of tire.

The spacing between adjacent oblique groove on crown pattern block 6, the adjacent transverse major trough on the second pattern block on tire shoulder 7 Spacing between 8 is larger so that the number of oblique groove and lateral major trough 8 is and each substantially at 35 or so on entire tire Spacing between spacing, each adjacent transverse major trough 8 between a adjacent oblique groove is different, and each transverse direction major trough 8 is by second Pattern block on tire shoulder 7 is whole to be divided into multiple quadrangle decorative pattern fritters, and spacing is larger between adjacent lateral major trough 8 effectively to reduce The distribution density of each quadrangle decorative pattern fritter ensure that the integral rigidity of tire tread, meanwhile, equipped with oblique in oblique groove To steel disc 9, the spacing between adjacent oblique steel disc 9 is larger, alleviates tire in wetland driving process, in oblique groove Oblique steel disc 9 interference is generated to the draining of longitudinal major trough, ensure that the drainability of tire tread, the inclination steel disc of setting and The shallower oblique steel disc of depth is the steel disc of thinner thickness, has good guide functions.

To sum up embodiment 1-3, when the parameters of tire are chosen such as following table two,

Table two

It is convex surface, rationally control by improving tire tread it follows that while guarantee tire good handling The tread width and sipe of ratch tire and the reasonable layout of pattern block, effectively increase the ground pressure of tire tread, change It has been apt to the ground connection shape on tire and ground, has improved the one's water breaks ability and drainability of tire when driving in wetland, and then simultaneous While caring for UHP tires good handling, the wetland performance of tire is effectively improved.

It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.

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 embodiment being appreciated that.

Claims

1. a kind of UHP tires promoting wetland performance, including crown arc overall length are the tyre surface of TDW, edge is offered on the tyre surface Longitudinal major trough of tire circumferentially extending, forms the pattern block circumferentially extended along tire between longitudinal major trough, it is characterised in that：

Between the wide SN of nominal section of the overall length TDW and tire of the crown arc there are the relationship of 0.80≤TDW/SN≤0.82, And the overall length TDW and crown arc central point of the crown arc between the difference in height TP of crown end of arc there are 0.047≤ The relationship of TP/TDW≤0.049；

The contour curve of the tyre surface is from the intersection point of equatorial plane and tire tread contour to tire shoulder on the section of tyre equatorial The second contour curve and arc length that the tyre surface end in portion is divided into the first profile curve that arc length is TW1, arc length is TW2 are TW3's Third contour curve, between described TW1, TW2, TW3 and 0.5TDW there are 0.40≤TW1/ (0.5TDW)≤0.42,0.26≤ The proportionate relationship of TW2/ (0.5TDW)≤0.28,0.31≤TW3/ (0.5TDW)≤0.33.

2. the UHP tires according to claim 1 for promoting wetland performance, it is characterised in that：The longitudinal direction major trough is included in First longitudinal direction major trough (1), second longitudinal direction major trough (2), the third longitudinal direction major trough (3) and opened up successively on tire width direction Four longitudinal major troughs (4)；The width of the first longitudinal direction major trough (1) is a, the width of second longitudinal direction major trough (2) is b, third is longitudinal The width of major trough (3) is c, the width of the 4th longitudinal major trough (4) is d, is existed (a/TDW)：(b/TDW)：(c/TDW)：(d/TDW) =0.09：0.17：0.17：0.13 relationship.

3. the UHP tires according to claim 1 for promoting wetland performance, it is characterised in that：The pattern block includes outside The first pattern block on tire shoulder (5) that pattern block (14), first longitudinal direction major trough (1) and second longitudinal direction major trough (2) limit, second longitudinal direction Crown pattern block (6), third longitudinal direction major trough (3) and the 4th longitudinal major trough that major trough (2) is limited with third longitudinal direction major trough (3) (4) the second pattern block on tire shoulder (7) and side pattern block (13) limited.

4. the UHP tires according to claim 3 for promoting wetland performance, it is characterised in that：The pattern block and ground Contact surface is convex surface and pattern block contour curve and the intersection point of both sides longitudinal direction major trough contour curve is respectively P₁And P₂；The convex surface The central point of contour curve is located at P₁And P₂The midpoint P of line₀Surface and convex profile curve central point ratio P₀Point is high The distance gone out is h, and the value range of the h is 0.20≤h≤0.30mm.

5. the UHP tires according to claim 3 for promoting wetland performance, it is characterised in that：First pattern block on tire shoulder (5) more than one is equipped with equipped with the inclined groove for tilting steel disc (10)；The inclined groove is close to first longitudinal direction major trough (1) The upper right side of second longitudinal direction major trough (2) side tilts, and the lower-left end of inclined groove connects with first longitudinal direction major trough (1), upper right side Do not connect with second longitudinal direction major trough (2).

6. the UHP tires according to claim 5 for promoting wetland performance, it is characterised in that：The inclined groove and first The junction of longitudinal major trough (1) offers corner cut slot (11)；The corner cut slot (11) is vee gutter.

7. the UHP tires according to claim 3 for promoting wetland performance, it is characterised in that：On the crown pattern block (6) Offer more than one oblique groove that oblique steel disc (9) is housed；The oblique groove is to second longitudinal direction major trough (2) close to third The lower right of longitudinal major trough (3) side tilts, and the left upper end of oblique groove connects with second longitudinal direction major trough (2), bottom righthand side and the Three longitudinal major troughs (3) connect.

8. the UHP tires according to claim 3 for promoting wetland performance, it is characterised in that：Second pattern block on tire shoulder (7) more than one lateral major trough (8) is offered on；The transverse direction major trough (8) is longitudinal close to the 4th to third longitudinal direction major trough (3) The upper right side of major trough (4) side tilts, and the lower-left end of lateral major trough (8) communicates with third longitudinal direction major trough (3), upper right side and the 4th Longitudinal major trough (4) communicates.

9. the UHP tires according to claim 8 for promoting wetland performance, it is characterised in that：Second pattern block on tire shoulder (7) two rows of triangular grooves are also offered respectively close to the side of third longitudinal direction major trough (3) and close to the side of the 4th longitudinal major trough (4) Slot (12), be connected with third longitudinal direction major trough (3) close to the shallow ridges end of row's triangular slot (12) of third longitudinal direction major trough (3), It is connected with the 4th longitudinal major trough (4) close to the shallow ridges end of row's triangular slot (12) of the 4th longitudinal major trough (4).

10. the UHP tires according to claim 7 for promoting wetland performance, it is characterised in that：The oblique groove is centre Drainage groove that is deep and being gradually become shallower as from centre to both ends；It is described transverse direction major trough (8) be from third longitudinal direction major trough (3) abutment end To the drainage groove gradually deepened with the 4th longitudinal major trough (4) abutment end.