CN112976947A

CN112976947A - Medium-long distance low rolling resistance all-wheel-position type tire tread pattern

Info

Publication number: CN112976947A
Application number: CN202011531037.9A
Authority: CN
Inventors: 李昭; 马向前; 孟聪聪; 王国强; 董连霞; 郑永粮; 杨启龙; 王小刚; 张东; 岳爽
Original assignee: Aeolus Tyre Co Ltd
Current assignee: Aeolus Tyre Co Ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-06-18
Anticipated expiration: 2040-12-22
Also published as: CN112976947B

Abstract

The invention provides a tread pattern of a middle-distance and long-distance low-rolling-resistance all-wheel-position type tire, which has good driving performance, drainage performance and reliable mileage, and has lower rolling resistance coefficient and high-speed performance than the original guide tire and driving tire products. A tread pattern of a middle-long distance low rolling resistance all-wheel-position type tire comprises a circumferential pattern groove and circumferential pattern blocks, wherein the circumferential pattern groove and the circumferential pattern blocks are arranged at intervals; the transverse section structure of the circumferential groove is as follows: from top to bottom, the opening of the circumferential groove is first tapered, then enlarged, and then reduced.

Description

Medium-long distance low rolling resistance all-wheel-position type tire tread pattern

Technical Field

The invention relates to a tire tread pattern, in particular to a middle-long distance low rolling resistance all-wheel-position tire tread pattern.

Background

In recent years, the development of the long-distance high-speed transportation traction vehicle is vigorous, and the competition is increased, so that the requirements of whole vehicle production and manufacturing enterprises on various performances of the whole vehicle tire are higher and higher. The former guide wheel and the driving wheel usually adopt different pattern configurations to meet the performance requirements of different wheel positions, but the tire design difference greatly increases the purchasing and assembling complexity of finished automobile production enterprises. With the development of society, the requirements of people on environmental protection are higher and higher, GB 30510 and 2018 release the requirements on the fuel consumption limit of a vehicle, and the requirements on fuel consumption reduction of the whole vehicle are difficult to meet due to the high rolling resistance of the original block-shaped driving type patterns.

Disclosure of Invention

In order to solve the problems, the invention provides a tread pattern of a medium-distance and long-distance low-rolling-resistance all-wheel-position type tire, which has good driving performance, drainage performance and reliable mileage, and has lower rolling resistance coefficient and high-speed performance than the original guide tire and driving tire products.

The technical scheme of the invention is as follows: a tread pattern of a middle-long distance low rolling resistance all-wheel-position type tire comprises a circumferential pattern groove and circumferential pattern blocks, wherein the circumferential pattern groove and the circumferential pattern blocks are arranged at intervals; the transverse section structure of the circumferential groove is as follows: from top to bottom, the opening of the circumferential groove is first tapered, then enlarged, and then reduced.

The transverse cross section of the circumferential grooves is formed by a curved or/and straight line connection.

The transverse section of the circumferential groove is formed by smoothly connecting curves; the transverse section of the circumferential pattern groove is formed by sequentially connecting three arcs, the three arcs are an arc I, an arc II and an arc III, the radius of the arc I is 8-20 mm, and the radius of the arc III is 8-20 mm.

The circumferential groove comprises a circumferential groove I with a relatively wide width and a circumferential groove II with a relatively narrow width, and the width of the circumferential groove II with the relatively narrow width is 1/5-2/5 of the width of the circumferential groove with the relatively wide width I.

The width of the circumferential groove I is relatively wide, and the circumferential groove I is at least two and is symmetrically arranged on the tire tread relative to the central axis of the tire tread; in the width direction, the circumferential grooves on two sides of the tire tread are circumferential grooves I with relatively wide widths.

And the circumferential pattern blocks are provided with transverse grooves.

In the length direction, the end part of the transverse groove is provided with a circumferential groove, and the end part of the transverse groove is communicated with the circumferential groove.

In the length direction, the middle depth of the transverse groove with two ends communicated with the circumferential groove is greater than the depths of the two ends; l1 is the length of the lateral groove with both ends communicating with the circumferential groove, L2 is the length of the deeper middle part of the lateral groove with both ends communicating with the circumferential groove, h1 is the depth of the deeper middle part of the lateral groove with both ends communicating with the circumferential groove, h2 is the depth of both ends of the lateral groove with both ends communicating with the circumferential groove; l2 is 0.31-0.44 times of L1, and h2 is 0.56-0.69 times of h 1.

The tire tread pattern is centrosymmetric about a tire tread central axis.

The circumferential pattern block is positioned in the middle of the tire tread, a transverse groove on the circumferential pattern block positioned in the middle of the tire tread is a transverse groove I, the transverse groove I is formed by two sections of arcs which are tangent and the tangent point of which passes through the central axis, two ends of the transverse groove I are communicated with the circumferential pattern groove, the groove angle of the transverse groove I is from alpha to beta, the alpha is 55-65 degrees, and the beta is 65-75 degrees; the angle alpha is an included angle between a tangent line passing through the intersection point of the transverse groove I and the central axis of the tire tread and the width direction of the tire tread; the angle beta is an included angle between a connecting line of two points of the end point of the transverse groove I and the intersection point of the central shaft of the tire tread and the width direction of the tire tread; the other transverse grooves with two ends communicated with the circumferential groove are transverse grooves II, the included angle between each transverse groove II and the width direction of the tire tread is gamma, and the gamma is 30-35 degrees.

The tire tread structure has the beneficial effects that when the tire tread is grounded, the distance between the circumferential pattern blocks on two sides of the circumferential pattern groove is reduced, so that the deformation of the circumferential pattern blocks is restrained, the rigidity of the circumferential pattern blocks is improved, the rubber deformation of the tire is reduced, and the rolling resistance of the tire is reduced. When the tire tread is off the ground, the distance between the circumferential pattern blocks on the two sides of the circumferential pattern groove is increased, so that heat can be dissipated quickly, and the high-speed performance of the tire is improved. In the cycle of repeatedly contacting the ground with the tire, the deformation of the tire circumferential pattern block is reduced, and the tire rolling resistance is reduced. The transverse rigidity of the circumferential pattern groove is improved, the rolling resistance of the tire is reduced, the heat dissipation of the tire is increased, and the high-speed performance of the tire is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic transverse cross-sectional configuration of a circumferential groove.

FIG. 3 is a schematic transverse sectional view of a circumferential groove.

FIG. 4 is a schematic transverse sectional configuration of a circumferential groove.

Fig. 5 is a schematic view of the structure of the lateral trench i.

Fig. 6 is a schematic structural diagram of the lateral trench ii.

FIG. 7 is a schematic representation of the variation in circumferential groove shape.

Fig. 8 is a structural diagram of a lateral trench direction change.

Fig. 9 is a schematic structural view of a lateral trench combination variation.

Detailed Description

While the invention will be described in detail and with reference to the drawings and specific examples, it is to be understood that the invention is not limited to the precise construction and details shown and described herein, but is capable of numerous rearrangements and modifications as will now become apparent to those skilled in the art. In the present invention, unless otherwise specifically defined and limited, technical terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention pertains. The terms "connected", "fixed", "arranged" and the like are to be understood in a broad sense, and may be fixedly connected, detachably connected or integrated; can be directly connected or indirectly connected through an intermediate medium; either mechanically or electrically. Unless explicitly defined otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features, or indirectly contacting the first and second features through intervening media. Furthermore, a first feature may be "on" or "over" or "above" a second feature, and the like, may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature "under" or "beneath" a second feature may be directly under or obliquely under the first feature or may simply mean that the first feature is at a lesser level than the second feature. Relational terms such as first, second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

As shown in fig. 1-9, a tread pattern 1 of a medium-long-distance low rolling resistance all-wheel-position type tire comprises a circumferential groove 3 and circumferential blocks 2, wherein the circumferential groove 3 and the circumferential blocks 2 are arranged at intervals; the transverse section structure of the circumferential groove 3 is: from top to bottom, the opening of the circumferential groove is first tapered, then enlarged, and then reduced. When the tire tread is grounded, the distance between the circumferential pattern blocks on two sides of the circumferential pattern groove is reduced, so that the deformation of the circumferential pattern blocks is restrained, the rigidity of the circumferential pattern blocks is improved, the deformation of tire rubber is reduced, and the rolling resistance of the tire is reduced. When the tire tread is off the ground, the distance between the circumferential pattern blocks on the two sides of the circumferential pattern groove is increased, so that heat can be dissipated quickly, and the high-speed performance of the tire is improved. In the cycle of repeatedly contacting the ground with the tire, the deformation of the tire circumferential pattern block is reduced, and the tire rolling resistance is reduced. The transverse rigidity of the circumferential pattern groove 3 is improved, the rolling resistance of the tire is reduced, the heat dissipation of the tire is increased, and the high-speed performance of the tire is improved. The shape including the circumferential grooves may be linear or curved.

As shown in fig. 2 to 4, the transverse section of the circumferential groove 3 is formed by a curved line or/and a straight line connection.

As shown in fig. 2, the lateral section of the circumferential groove 3 is formed by curved smooth connections.

The circumferential grooves include a relatively wide circumferential groove I31 and a relatively narrow circumferential groove II 32. The circumferential groove I31 with relatively wide width ensures the guidance of the straight running of the tire, and the circumferential groove II 32 with relatively narrow width provides the heat dissipation of the tire during the high-speed running of the tire. The width of the circumferential groove II 32 with relatively narrow width is 1/5-2/5 of the width of the circumferential groove I31 with relatively wide width. Therefore, the tire high-speed performance and the guiding performance are ensured, the saturation degree of the central grounding area is improved, the rigidity is improved, and the rolling resistance is reduced.

The upper end opening width of the circumferential groove II 32 with relatively narrow width is 2-4 mm, and the minimum gap between two side groove walls of the groove II 32 is 1-2.5 mm. When the tire tread is grounded in a fully loaded state of the vehicle, the circumferential pattern blocks on two sides of the circumferential pattern groove II 32 with relatively narrow width are contacted. When the tire tread is grounded, the deformation of the circumferential pattern blocks is restrained, the rigidity of the circumferential pattern blocks is improved, the deformation of tire rubber is reduced, and the rolling resistance of the tire is reduced. When the tire tread is separated from the ground, the contact between the circumferential pattern blocks at two sides of the circumferential pattern groove II 32 with relatively narrow width disappears, so that heat can be dissipated quickly, and the high-speed performance of the tire is improved. In the cycle of repeatedly contacting the ground with the tire, the deformation of the tire circumferential pattern block is reduced, and the tire rolling resistance is reduced.

As shown in fig. 2, the transverse section of the circumferential pattern groove ii 32 with a relatively narrow width is formed by circular arcs in smooth connection, and as shown in the figure, the circumferential pattern groove ii comprises three circular arcs connected in sequence, wherein the three circular arcs are sequentially a circular arc i 16, a circular arc ii 17 and a circular arc iii 18, the radius of the circular arc i 16 is 8-20 mm, the radius of the circular arc iii 18 is 8-20 mm, the transverse rigidity of the circumferential pattern blocks at two sides of the circumferential pattern groove with the relatively narrow width is improved, and the rolling resistance is reduced; the radius of the circular arc II 17 is 2-2.5 mm, and when the tire is grounded, the stress at the bottom of the groove can be effectively dispersed, and the service life of the tire is prolonged. In addition, the minimum clearance between the circular arc I16 and the circular arc III 18 is 1-2.5 mm.

The relatively wide I31 circumferential grooves are at least two and are symmetrically arranged on the tire tread about the central axis of the tire tread. If the tire tread center is a circumferential groove, the circumferential groove at the tire tread center may also be a circumferential groove of relatively wide width.

In the width direction, the circumferential grooves 3 on both sides of the tire tread are the circumferential grooves i 31 having a relatively wide width. The guiding performance of the straight running of the tire is conveniently ensured by the aid of the guiding parts which are positioned on the two sides of the tire tread.

As shown in fig. 1, the tire tread pattern 1 is composed of five circumferential blocks 2 arranged in the tire circumferential direction and four circumferential grooves 3 arranged in the tire circumferential direction, the circumferential blocks 2 being arranged at intervals from the circumferential grooves 3.

In the width direction, the circumferential grooves 3 on two sides of the tire tread are relatively wide circumferential grooves I31, and the middle two circumferential grooves 3 are relatively narrow circumferential grooves II 32.

The five circumferential pattern blocks 2 are respectively provided with a transverse groove 4, so that the heat of the tire is dissipated quickly.

The transverse grooves 4 have a gradient to allow for rapid heat dissipation, reduced rolling resistance, and provide good drainage and driving properties and high speed performance while maintaining the longitudinal stiffness of the tire rib.

In the length direction of the transverse grooves, the ends of the transverse grooves 4 are provided with circumferential grooves 3, and the ends of the transverse grooves are communicated with the circumferential grooves. As shown in FIG. 1, the ends of the lateral grooves of the middle three circumferential blocks are respectively communicated with the circumferential grooves 3 on both sides of the circumferential block 2.

In the length direction of the transverse groove, the depth of the middle part of the transverse groove, the two ends of which are communicated with the circumferential groove, is greater than the depth of the two ends; such lateral grooves include lateral grooves i, ii, as shown in fig. 1. As shown in fig. 5 and 6, L1 is the length of the lateral groove having both ends communicating with the circumferential groove, L2 is the length of the deeper middle portion of the lateral groove having both ends communicating with the circumferential groove, h1 is the depth of the deeper middle portion of the lateral groove having both ends communicating with the circumferential groove, and h2 is the depth of both end portions of the lateral groove having both ends communicating with the circumferential groove; l2 is 0.31-0.44 times of L1, and h2 is 0.56-0.69 times of h 1. Therefore, the tire has good heat dissipation capacity during high-speed running, and simultaneously ensures the rigidity of the tire ribs and reduces the rolling resistance of the tire.

The circumferential pattern block is positioned in the middle of the tire tread, and the tire tread pattern is centrosymmetric about a certain point on the central axis of the tire tread. The tire has no directionality, is assembled by turning the tire by 180 degrees, has no change of various stresses for a wheel assembly and the running of a vehicle, is easy to assemble, has the effect of central symmetry, and ensures that the whole tire has better uniformity in the high-speed running state of the vehicle; therefore, the tire provided by the application can be used for assembling the whole wheel position of the whole vehicle of the middle-distance high-speed tractor.

And the horizontal slot that is located on the circumference decorative pattern piece in tire tread middle part is horizontal slot I5, and horizontal slot I5 is that two sections are tangent and the tangent point crosses the circular arc of central axis and constitutes, and horizontal slot I5 is central symmetry about the crossing point on horizontal slot I and the tire tread center pin, and in length direction, I both ends of horizontal slot communicate with circumference decorative pattern groove moreover. The groove angle of the transverse groove I5 is from alpha to beta, wherein alpha is 55-65 degrees, and beta is 65-75 degrees. The angle alpha is an included angle between a tangent line passing through the intersection point of the transverse groove I and the central axis of the tire tread and the width direction of the tire tread; the angle beta is the included angle between the two-point connecting line of the end point of the transverse groove I and the intersection point of the central shaft of the tire tread and the width direction of the tire tread. The tire has the advantages that good drainage and driving performance of the tire are guaranteed, meanwhile, the longitudinal rigidity and the transverse rigidity of the circumferential pattern block where the transverse groove I5 is located are improved, and the rolling resistance of the tire is reduced.

The other transverse grooves with two ends communicated with the circumferential groove are transverse grooves II 6, the included angle between the transverse grooves II 6 and the width direction of the tire tread is gamma, and the gamma is 30-35 degrees. The tire has good drainage and driving performance. Of course, the other lateral grooves, both ends of which communicate with the circumferential grooves, may be the same shape as the lateral grooves i.

On five circumference decorative pattern pieces, the horizontal slot that is located on the circumference decorative pattern piece of tire tread width direction both sides is horizontal slot III, and horizontal slot III only the inboard has a circumference decorative pattern groove, so on horizontal slot III 7 length direction, horizontal slot III 7 only one end and circumference decorative pattern groove 3 intercommunication.

Furthermore, the directions of the transverse grooves I, the transverse grooves III and the transverse grooves II are preferably opposite, so that the angle effect when the tire runs at high speed is reduced, and the guidance of straight running is improved.

When the transverse groove I, the transverse groove II or the transverse groove III is not specially indicated in the application, the range of the transverse groove comprises the transverse groove I, the transverse groove II and the transverse groove III; in the case where the circumferential grooves i and ii are not specifically indicated in the present application, the range of the circumferential grooves includes the circumferential grooves i and ii.

It should be noted that terms such as "central," "lateral," "longitudinal," "length," "width," "thickness," "height," "front," "rear," "left," "right," "up," "down," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "clockwise," "counterclockwise," and the like used in the description are used for indicating the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated. And therefore should not be construed as limiting the scope of the invention.

The above description is only a preferred embodiment of the present invention, not all embodiments, and the scope of the present invention is not limited thereto, and each feature of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of each feature of the above-described embodiments are not described, however, as long as there is no contradiction between these combinations of features, the scope of the present invention should be considered as being described in the present specification. Where combinations of features are mutually inconsistent or impractical, such combinations should not be considered as being absent and not within the scope of the claimed invention. It should be noted that those skilled in the art and any person skilled in the art can make equivalent substitutions or changes according to the technical solution of the present invention and the inventive concept thereof, and make several changes and improvements without departing from the spirit of the present invention and the principle of the present invention, which should also be regarded as the protection scope of the present invention.

Claims

1. A tread pattern of a middle-long distance low rolling resistance all-wheel-position type tire is characterized in that: the tread comprises a circumferential pattern groove and circumferential pattern blocks, wherein the circumferential pattern groove and the circumferential pattern blocks are arranged at intervals; the transverse section structure of the circumferential groove is as follows: from top to bottom, the opening of the circumferential groove is first tapered, then enlarged, and then reduced.

2. The medium haul low rolling resistance all wheel unit tire tread pattern of claim 1, wherein: the transverse cross section of the circumferential grooves is formed by a curved or/and straight line connection.

3. The medium haul low rolling resistance all wheel unit tire tread pattern of claim 1, wherein: the transverse section of the circumferential groove is formed by smoothly connecting curves; the transverse section of the circumferential pattern groove is formed by sequentially connecting three arcs, the three arcs are an arc I, an arc II and an arc III, the radius of the arc I is 8-20 mm, and the radius of the arc III is 8-20 mm.

4. The medium haul low rolling resistance all wheel unit tire tread pattern of claim 1, wherein: the circumferential groove comprises a circumferential groove I with a relatively wide width and a circumferential groove II with a relatively narrow width, and the width of the circumferential groove II with the relatively narrow width is 1/5-2/5 of the width of the circumferential groove I with the relatively wide width.

5. The medium haul low rolling resistance all wheel unit tire tread pattern of claim 4, wherein: the width of the circumferential groove I is relatively wide, and the circumferential groove I is at least two and is symmetrically arranged on the tire tread relative to the central axis of the tire tread; in the width direction, the circumferential grooves on two sides of the tire tread are circumferential grooves I with relatively wide widths.

6. The medium haul low rolling resistance all wheel unit tire tread pattern of claim 1, wherein: and the circumferential pattern blocks are provided with transverse grooves.

7. The medium haul low rolling resistance all wheel unit tire tread pattern of claim 1, wherein: in the length direction, the end part of the transverse groove is provided with a circumferential groove, and the end part of the transverse groove is communicated with the circumferential groove.

8. The medium haul low rolling resistance all wheel unit tire tread pattern of claim 7, wherein: in the length direction, the middle depth of the transverse groove with two ends communicated with the circumferential groove is greater than the depths of the two ends; l1 is the length of the lateral groove with both ends communicating with the circumferential groove, L2 is the length of the deeper middle part of the lateral groove with both ends communicating with the circumferential groove, h1 is the depth of the deeper middle part of the lateral groove with both ends communicating with the circumferential groove, h2 is the depth of both ends of the lateral groove with both ends communicating with the circumferential groove; l2 is 0.31-0.44 times of L1, and h2 is 0.56-0.69 times of h 1.

9. The medium haul low rolling resistance all wheel unit tire tread pattern of claim 7, wherein: the tire tread pattern is centrosymmetric about a tire tread central axis.

10. A tread pattern for a medium haul low rolling resistance all wheel unit type tire according to claim 8 or 9, characterized in that: the circumferential pattern block is positioned in the middle of the tire tread, a transverse groove on the circumferential pattern block positioned in the middle of the tire tread is a transverse groove I, the transverse groove I is formed by two sections of arcs which are tangent and the tangent point of which passes through the central axis, two ends of the transverse groove I are communicated with the circumferential pattern groove, the groove angle of the transverse groove I is from alpha to beta, the alpha is 55-65 degrees, and the beta is 65-75 degrees; the angle alpha is an included angle between a tangent line passing through the intersection point of the transverse groove I and the central axis of the tire tread and the width direction of the tire tread; the angle beta is an included angle between a connecting line of two points of the end point of the transverse groove I and the intersection point of the central shaft of the tire tread and the width direction of the tire tread; the other transverse grooves with two ends communicated with the circumferential groove are transverse grooves II, the included angle between each transverse groove II and the width direction of the tire tread is gamma, and the gamma is 30-35 degrees.