CN213831240U - Special pattern tire for cross-country vehicle - Google Patents

Abstract

The utility model relates to a special decorative pattern tire of cross country vehicle, including tire crown portion, shoulder portion, sidewall portion, bead portion, include tread rubber, curtain cloth crown band strip, belted layer, ply, inner liner in proper order from the extroversion, the radial outside of ply covers has 2 layers of belted layer, and the radial outside of belted layer has 2 layers of curtain cloth crown band strips of flatly laid, the belted layer comprises 2 layers of wire cord fabric, and the cord angle is 24. The utility model discloses effectively reduce the centrifugal force of tire under high-speed traveling to layer deformation and shearing force are restrainted in the reduction area, improve the high speed performance and the durability of tire, effectively improved the fatigue resistance of matrix curtain cloth to the tire, especially resistant flex fatigue performance has the important function, effectively protects the tire under extreme road conditions, has self-cleaning ability, effectively avoids the tire to damage.

Description

Special pattern tire for cross-country vehicle

Technical Field

The utility model relates to an automobile tire technical field, concretely relates to special decorative pattern tire of cross country vehicle.

Background

The cross-country vehicle needs to travel on complicated non-paved roads such as field mud stone, wet land, stabbing, etc., so the tire that the cross-country vehicle used is different from ordinary tire, need stronger grip, drainage ability and mud ground ability of traveling, and often meet the sudden impact, the tire side damages easily, complicated road surface mud stone fills in the ditch inslot easily, be difficult to clear up out and cause the tire to damage, the cross-country vehicle tire that commonly uses adopts big decorative pattern piece, strengthen its grip, but when high-speed operation, centrifugal force is great, the crown impact force is big, easy deformation, make the wearability of tire, tear resistance, fatigue resistance can not be strong, make tire whole life and traveling safety not high.

Disclosure of Invention

The utility model aims at providing a special decorative pattern tire of cross country vehicle.

The utility model provides a technical scheme that its technical problem adopted is: a kind of off-road vehicle specialized pattern tire, including the crown portion, shoulder portion, sidewall portion, bead portion, include the tread rubber, cord fabric crown band, belted layer, cord fabric, inner liner sequentially from outside to inside, the cord fabric is the main skeleton support position of the tire, it is used for bearing the load pressure of the tire, internal air pressure and horizontal shear force, etc., it is mainly made up of fibrous cord fabric of one or more layers, the radial outside of the said cord fabric is covered with 2 layers of belted layers, the belted layer is the material layer of the carcass of hooping tightly along the central line circumferential direction of the crown, have high tension, its intensity used in reinforcing crown, and buffer the impact force of the road surface; the radial outer side of the belt ply is flatly paved with 2 layers of cord fabric cap strips, which are the parts of the tire in direct contact with the ground, and patterns with different shapes need to be selected according to different road conditions and different required purposes, so that the tire has the function of protecting a tire body, is also the part of the tire with the largest loss, and provides the functions of driving, traction, braking, water drainage, skid resistance, shock absorption, steering and the like; the tire side part is covered with tire side rubber outside the tire cord layer, and the tire side part has the function of absorbing the impact force and vibration of a road surface although the tire side part is not in contact with the ground; the belt ply consists of 2 layers of steel cord fabrics, and the angle of the cord fabric is 24 degrees;

the tread surface comprises longitudinal drainage ditches, transverse drainage ditches and pattern blocks, the number of the longitudinal drainage ditches is 1, the longitudinal drainage ditches are positioned on a longitudinal central axis of the tread of the tire, each transverse drainage ditch comprises a plurality of transverse drainage ditch groups arranged on two sides of the longitudinal drainage ditches, each transverse drainage ditch group comprises 1S-shaped transverse drainage ditch and 1 arc-shaped transverse drainage ditch which are adjacent, each pattern block is formed by dividing the longitudinal drainage ditches, the S-shaped transverse drainage ditches and the arc-shaped transverse drainage ditches and comprises inner pattern blocks and outer pattern blocks which are alternately arranged, the width of one end, close to the longitudinal drainage ditches, of each inner pattern block is larger than that of one end, close to a tire shoulder, of each outer pattern block is smaller than that of one end, close to a tire shoulder, of each inner pattern block sequentially comprises an inner pattern block head part, an inner pattern block waist part and an inner pattern block tail part from near to far according to the distance between each inner pattern block and the longitudinal drainage ditches, the outer pattern block sequentially comprises an outer pattern block head, an outer pattern block waist and an outer pattern block tail according to the distance from the outer pattern block to the longitudinal drainage ditch from far to near.

Specifically, a tire bead steel wire is arranged in the tire bead, the tire bead steel wire is a tempered steel wire with the diameter of 1.3mm, and the diameter of the single wire after rubber coating is 1.6 mm.

Specifically, the belt layer comprises 2 layers of 3 multiplied by 0.2+6 multiplied by 0.35HT steel cord fabrics, the cord angle is 24 degrees, the cord fabric crown strip adopts 2 layers of 1400dtex/2 nylon 66 dipped cord fabric crown strip, and the width of the 1 st belt layer and the width of the driving surface are the same.

Specifically, the profile shape of longitudinal drainage ditch is continuous S-shaped, and the longitudinal drainage ditch comprises a plurality of longitudinal ditch section groups end to end, and every longitudinal ditch section group is including being linked together first longitudinal ditch section and second longitudinal ditch section, and the first half section of first longitudinal ditch section inclines to the left and half section down inclines to the right, and the first half section of second longitudinal ditch section inclines to the right and half section down inclines to the left, and the cross section of longitudinal drainage ditch is trapezium structure, and the contained angle between both sides wall and the base is 82 degrees.

Specifically, the S-shaped lateral drainage ditch is S-shaped in outline, and the arc-shaped lateral drainage ditch is arc-shaped in outline; a plurality of lateral drainage ditch group staggered arrangement are in 1 both sides of longitudinal drainage ditch, lie in two adjacent lateral drainage ditch groups 20 of 1 both sides of longitudinal drainage ditch, its shape is symmetrical with the vertical axis of tire hat I as the symmetry axis, its position is staggered arrangement, the longitudinal length of 1 lateral drainage ditch group is 1 pitch, the staggered distance of the lateral drainage ditch group that lies in longitudinal drainage ditch both sides is half pitch, longitudinal drainage ditch communicates with S-shaped lateral drainage ditch and arc lateral drainage ditch respectively, S-shaped lateral drainage ditch, arc lateral drainage ditch cross section is the trapezium structure, the contained angle between both sides wall and the base is 82 degrees.

Specifically, 1 adjacent inner pattern block and 1 adjacent outer pattern block are used as a pattern block group, a plurality of pattern block groups are arranged on two sides of the longitudinal drainage ditch in a staggered mode, two adjacent pattern block groups located on two sides of the longitudinal drainage ditch are symmetrical to each other by taking a longitudinal central axis of a tire crown as a symmetry axis, and the pattern block groups are arranged in a staggered mode.

Specifically, the heights of the head part and the tail part of the inner pattern block from the bottom of the S-shaped lateral drainage ditch are respectively a certain value, the height of the head part of the inner pattern block is greater than that of the tail part of the inner pattern block, the head part and the tail part of the inner pattern block are connected through the waist part of the inner pattern block, the heights of two ends of the waist part of the inner pattern block are respectively flush with the head part and the tail part of the inner pattern block, the height of the waist part of the inner pattern block is linearly gradually changed, namely, the cross section of the tail part of the inner pattern block is in a trapezoidal structure, the included angle between the two side walls and the top surface is 85 degrees respectively, the included angle between one side wall of the tail part of the inner pattern block, which is far away from the waist part of the inner pattern, and the top surface of the inner pattern block is 45 degrees, the inner pattern block is transited to the bottom of the longitudinal drainage ditch, and an inner pattern block notch is arranged at the middle position of one side of the head part of the inner pattern block, which is adjacent to the arc-shaped transverse drainage ditch.

Specifically, the height between the head of the outer pattern block and the tail of the outer pattern block from the bottom of the drainage ditch is a certain value, the height of the head of the outer pattern block is greater than that of the tail of the outer pattern block, the head of the outer pattern block is connected with the tail of the outer pattern block through the waist of the outer pattern block, the heights of two ends of the waist of the outer pattern block are respectively flush with the head of the outer pattern block and the tail of the outer pattern block, the height of the waist of the outer pattern block is linearly gradually changed, namely, the height from one end connected with the head of the outer pattern block to one end connected with the tail of the outer pattern block is gradually and uniformly reduced, and the height of the tail of the outer pattern block is 1/7-1/6.

Specifically, the outline of the head part of the outer pattern block is an irregular N-edge shape, N is more than or equal to 10, an outer pattern block notch is formed in the middle of one side, adjacent to the S-shaped lateral drainage ditch, of the head part of the outer pattern block, the depth of the outer pattern block notch is smaller than one half of the width of the arc-shaped lateral drainage ditch and larger than one third of the width of the arc-shaped lateral drainage ditch, an outer pattern block groove is formed in the head part of the outer pattern block, the outline of the outer pattern block groove is J-shaped, the depth of the outer pattern block groove is one fifth of the depth of the S-shaped lateral drainage ditch, the width of the outer pattern block groove is one fifth to one tenth of the width of the head part of the outer pattern block, an outer pattern block groove is formed along the bottom of the outer pattern block groove, the outline of the outer pattern block groove is J-shaped, the microscopic shape of the outer pattern block groove is zigzag, and the width of the outer pattern block groove is one sixth of the width of the outer pattern block groove.

Specifically, the head part of the outer pattern block extends to the tire shoulder, a first trapezoidal pattern block and a second trapezoidal pattern block are arranged on the tire shoulder, the pattern block group is divided into a first pattern block group and a second pattern block group, the second pattern group and the first pattern group are alternately distributed, the head part of the outer pattern block of the first pattern block group is connected with the first trapezoidal pattern block through an inwards concave arc transition section, an outer pattern block sipe of the head part of the outer pattern block of the first pattern group is stopped with an arc transition section from an outer pattern groove to an inwards concave pattern groove, the head part of the outer pattern block of the second pattern block group is connected with the second trapezoidal pattern block through an outwards convex arc transition section, an outer pattern block sipe of the head part of the outer pattern block of the second pattern group and an outer pattern groove extend to the tire shoulder part, the first trapezoidal pattern block and the second trapezoidal pattern block are both trapezoidal, and the edge connected with the head part of the outer pattern block is a lower bottom, the length of the lower bottoms of the first trapezoidal pattern block and the second trapezoidal pattern block is larger than the width of the head of the outer pattern block.

Specifically, a third trapezoidal pattern block is further arranged on the tire shoulder, and the lower bottom of the third trapezoidal pattern block is adjacent to the upper bottom of the first trapezoidal pattern block.

The utility model discloses following beneficial effect has: the utility model discloses to the pattern piece distribution, the pitch is arranged and is carried out the analog simulation with noise etc, select optimal scheme, arrange and its dimensional design between tread and inside each layer, effectively reduce the centrifugal force of tire under high-speed traveling, thereby it warp and the shearing force to reduce the area of restrainting, improve the high speed performance and the durability of tire, 1 st layer area of general area of restrainting the layer width than the driving surface width 6mm greatly, the tire of this design belongs to cross country tire, both get the same value, the fatigue resistance of matrix curtain cloth to the tire has effectively been improved, especially flex fatigue resistance performance has the important function. The decorative pattern piece design of cooperation child cap, tire shoulder, the decorative pattern depth is 16mm, and the decorative pattern saturation is 51.8%, and the decorative pattern internode number of revolutions is 40, has following advantage: the trapezoidal pattern blocks of the tire shoulder are designed to be anti-collision armor, so that the tire is effectively protected under extreme road conditions; the design of the three-dimensional cut angle of the tire shoulder improves the traction performance and the operation stability of the non-paved road surface; the reasonable design of the sipes improves the wet performance and the operation stability of the tire; the transverse drainage ditch and the longitudinal drainage ditch are designed in a trapezoid shape, and the bottoms of the ditches are long and narrow strips, so that the self-cleaning capability is realized, and the damage to tires is effectively avoided; the tread block edge step design and the chamfer angle design effectively avoid the abnormal wear of the tire.

Drawings

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

Fig. 2 is a schematic diagram of the structure between layers inside the present invention.

Fig. 3 is a schematic view of the tread structure of the present invention.

Fig. 4 is a schematic structural view of the tread pattern of the present invention.

Fig. 5 is a schematic view of the a-a position of the longitudinal drainage ditch of the present invention.

Figure 6 is the utility model discloses a lateral drainage ditch C-C department's schematic diagram.

Fig. 7 is a schematic view of the waist portion H-H' of the external pattern block of the present invention.

Fig. 8 is a schematic view of the tail portion I-I of the outer pattern of the present invention.

FIG. 9 is a schematic view of the outer pattern block at the tail J-J' of the present invention.

Fig. 10 is a schematic view of the flat structure of the tread pattern and the tire shoulder of the present invention.

Fig. 11 is a schematic structural view of the outer pattern block groove of the first outer pattern block of the present invention.

Fig. 12 is a schematic structural view of the outer pattern block groove of the second outer pattern of the present invention.

Fig. 13 is a schematic cross-sectional view of an outer block groove and an outer block groove according to the present invention.

Fig. 14 is a schematic view of a flat structure at the crown pattern and the tire shoulder according to another embodiment of the present invention.

Fig. 15 is the utility model discloses a vertical escape canal structure schematic diagram.

FIG. 16 is a schematic view of the structure of the longitudinal drainage channel section of the present invention.

In the figure, I crown, ii shoulder, iii sidewall, 1 rut, 10 rut group, 11 first rut, 12 second rut, 2 rut, 21S rut, 22 arc rut, 3 block, 301 first block group, 302 second block group, 31 inner block, 311 inner block head, 312 inner block waist, 313 inner block tail, 32 outer block, 321 outer block head, 322 outer block waist, 323 outer block tail, 324 inner block gap, 325 outer block groove, 326 outer block groove, 4 trapezoidal block, 41 first trapezoidal block, 42 second trapezoidal block, 5 shoulder wedge, 601 breaker, 602 belt crown, 603 belt ply, 604 ply, 605 bead wire, 606 apex.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 16, a special pattern tire for off-road vehicles comprises a tread I, a cord fabric cap strip 602, a belt 603, a ply 604 and an inner liner (not shown in the figure), wherein the ply 604 comprises a pair of carcass beads 6041, a carcass side ply 6042 arranged along the radial outer side of the bead 6041, and a carcass face ply 6043 arranged between the two carcass side plies 6042, the radial outer side of the carcass face ply 6043 is covered with 2 layers of belt 603, the radial outer side of the belt 603 is flatly paved with 2 layers of cord fabric cap strip 602, the radial outer side of the cord fabric cap strip 602 and the carcass side ply of the ply are covered with a tread, the tread is divided into a tread I, a shoulder ii and a sidewall iii, the belt is composed of 2 layers of 3 × 0.2+6 × 0.35HT steel cords, the cord angle is 24 °, and the impact force of the tread is 70%;

the tread cap I surface comprises longitudinal drainage ditches 1, transverse drainage ditches 2 and pattern blocks 3, the number of the longitudinal drainage ditches 1 is 1, the longitudinal drainage ditches are located on a longitudinal central axis of the tread cap I, the transverse drainage ditches 2 comprise a plurality of transverse drainage ditches 20 arranged on two sides of the longitudinal drainage ditches 1, each transverse drainage ditch 20 comprises 1S-shaped transverse drainage ditch 21 and 1 arc-shaped transverse drainage ditch 22 which are adjacent, the pattern blocks 3 are formed by dividing the longitudinal drainage ditches 1, the S-shaped transverse drainage ditches 21 and the arc-shaped transverse drainage ditches 22 and comprise inner pattern blocks 31 and outer pattern blocks 32 which are alternately arranged, the width of one end, close to the longitudinal drainage ditches 1, of each inner pattern block 3 is larger than that of one end, close to a tire shoulder, of each outer pattern block 3, close to the longitudinal drainage ditches 1, and smaller than that of one end, close to a tire shoulder, of each outer pattern block 3; the inner pattern block 31 sequentially comprises an inner pattern block head part 311, an inner pattern block waist part 312 and an inner pattern block tail part 313 from near to far according to the distance from the longitudinal drainage ditch 1, the outer pattern block 32 sequentially comprises an outer pattern block head part 321, an outer pattern block waist part 322 and an outer pattern block tail part 323 from far to near according to the distance from the longitudinal drainage ditch 1, the pattern depth is 16mm, the pattern saturation is 51.8%, and the pattern circumferential pitch number is 40.

Specifically, a bead wire 605 is arranged in the bead 6041, the bead wire 605 is a tempered wire with the diameter of 1.295mm, the diameter of the single wire is 1.6mm after rubber coating, the bead ring is formed by winding the single wire and is hexagonal, the arrangement mode is 4-5-6-5-4-3, in order to ensure the comfort and the maneuverability of the tire, the bead filler is a composite filler, the lower bead filler is harder, and the height is 15 mm; the upper triangular rubber is soft and has a height of 30mm, a secondary forming machine and a crown-bag side production process are adopted for forming, the width of a forming machine head is related to the assumed extension value of the cord thread, the assumed extension value of the design at this time is 1, the width of a section of forming machine head is 488mm, and a hydraulic vulcanizing machine and a nitrogen-filled vulcanizing process are adopted for vulcanization; the vulcanization conditions are as follows: the external temperature is 173 +/-3 ℃, the internal temperature is 203 +/-3 ℃, the internal pressure is 1.6-2.4 MPa, and the total vulcanization time is 21.0min, so that the tire body deformation of the tire in the later use stage is prevented, and the series of products adopt the post-vulcanization inflation process.

Specifically, the profile shape of the longitudinal drainage ditch is a continuous S shape, the longitudinal drainage ditch 1 is formed by connecting a plurality of longitudinal ditch section groups 10 end to end, each longitudinal ditch section group 10 comprises a first longitudinal ditch section 11 and a second longitudinal ditch section 12 which are communicated with each other, the upper half section of the first longitudinal ditch section 11 inclines to the left, the lower half section of the first longitudinal ditch section 11 inclines to the right, and the upper half section of the second longitudinal ditch section 12 inclines to the right, and the lower half section of the second longitudinal ditch section 12 inclines to the left; the included angle a between the left side wall of the first longitudinal groove section 11 and the left side wall of the second longitudinal groove section 12 is 135 degrees, the cross section of the longitudinal drainage ditch is in a trapezoidal structure, and the included angle between the two side walls and the bottom edge is 82 degrees, as shown in fig. 5.

Specifically, the profile shape of the S-shaped lateral drainage ditch 21 is an S-shape, and the profile shape of the arc-shaped lateral drainage ditch 22 is an arc shape; the lateral drainage ditch groups 20 are arranged on two sides of the longitudinal drainage ditch 1 in a staggered mode, the two adjacent lateral drainage ditch groups 20 on two sides of the longitudinal drainage ditch 1 are symmetrical by taking a longitudinal central axis of a tire crown I as a symmetry axis and are arranged in a staggered mode, the longitudinal length of each lateral drainage ditch group 20 is 1 pitch, the staggered distance of the lateral drainage ditch groups 20 on two sides of the longitudinal drainage ditch is half pitch, the longitudinal drainage ditch 1 is respectively communicated with the S-shaped lateral drainage ditch 21 and the arc-shaped lateral drainage ditch 22, an included angle b between the arc-shaped lateral drainage ditch 22 and the longitudinal central axis of the tire crown I is 50 degrees, an included angle c between the arc-shaped lateral drainage ditch 22 and the edge of a tire shoulder II is 90 degrees, an included angle d between the S-shaped lateral drainage ditch 21 and the longitudinal central axis of the tire crown I is 50 degrees, an included angle e between the S-shaped lateral drainage ditch 21 and the edge of the tire shoulder II is 90 degrees, and the S-shaped lateral drainage ditch is formed by the S-shaped lateral drainage ditch, The cross section of the arc-shaped lateral drainage ditch 22 is of a trapezoidal structure, and the included angle between the two side walls and the bottom edge is 82 degrees, as shown in FIG. 6.

Specifically, 1 inner block 31 and 1 outer block 32 adjacent to each other are used as one block group 30, a plurality of block groups 30 are arranged in a staggered manner on both sides of the longitudinal drain 1, and two adjacent block groups 30 on both sides of the longitudinal drain 1 are formed symmetrically with respect to the longitudinal central axis of the crown of the tire as the axis of symmetry and are arranged in a staggered manner, and since the block groups 30 themselves are formed by dividing the lateral drain group 20, the pitch of the block groups 20 is the same as that of the lateral drain group 20, and the staggered distance of the block groups 20 on both sides of the longitudinal drain 1 is also half the pitch.

Specifically, the heights of the head 311 and the tail 313 of the inner pattern block from the bottom of the S-shaped lateral drainage ditch 21 are respectively a certain value, the height of the head 311 of the inner pattern block is greater than the height of the tail 313 of the inner pattern block, the head 311 and the tail 313 of the inner pattern block are connected through the waist 312 of the inner pattern block, the heights of the two ends of the waist 312 of the inner pattern block are respectively flush with the head 311 and the tail 313 of the inner pattern block, the height of the waist 312 of the inner pattern block is linearly gradually changed, namely, the height of the waist 312 of the inner pattern block is gradually and uniformly decreased from the end connected with the head 311 of the inner pattern block to the end connected with the tail 313 of the inner pattern block, the height of the tail 313 of the inner pattern block is 1/7 to 1/6 of the height of the head 311 of the inner pattern block, the cross section of the tail of the inner pattern block is in a trapezoidal structure, the included angles between the two side walls and the top surface are respectively 85 degrees, and the included angle between the side wall of the tail of the inner pattern block far away from the tail and the top surface is 45 degrees, transition to the bottom of the longitudinal drainage ditch 1, as shown in fig. 9, the outline of the inner pattern block head 311 is an irregular N-shaped polygon, N is more than or equal to 9, an inner pattern block notch 314 is formed in the middle of one side of the inner pattern block head 311 adjacent to the arc-shaped lateral drainage ditch 22, and the depth of the inner pattern block notch 314 is 35% of the width of the arc-shaped lateral drainage ditch 22; the inner block notch 314 has a length of 33% of the length of the inner block head 311 in the lateral drainage direction.

Specifically, the heights of the head 321 and the tail 323 of the outer pattern block from the bottom of the drainage ditch are respectively a certain value, the height of the head 321 of the outer pattern block is greater than the height of the tail 323 of the outer pattern block, the head 321 and the tail 323 of the outer pattern block are connected through an outer pattern block waist 322, the heights of the two ends of the outer pattern block waist 322 are respectively flush with the head 321 and the tail 323 of the outer pattern block, the height of the outer pattern block waist 322 is linearly gradually changed, namely, the height is gradually and uniformly decreased from the end connected with the head 321 of the outer pattern block to the end connected with the tail 323 of the outer pattern block, and the height of the tail 323 of the outer pattern block is 1/7 to 1/6 of the height of the head 321 of the outer pattern block, as shown in fig. 7.

Specifically, the outline of the outer block head 321 is an irregular N-sided polygon, N is equal to or greater than 10, an outer block notch 324 is formed in the middle of the side of the outer block head 321 adjacent to the S-shaped lateral drain 21, the depth of the outer block notch 324 is less than one half of the width of the arc-shaped lateral drain 22 and greater than one third of the width of the arc-shaped lateral drain 22, the length of the outer block notch 324 is 33% of the length of the outer block head 321 in the lateral drain 2 direction, an outer block groove 325 is formed in the outer block head 321, the outline of the outer block groove 325 is J-shaped, the depth of the outer block groove 325 is one fifth to one tenth of the depth of the S-shaped lateral drain 21, the width of the outer block groove 325 is one fifth to one tenth of the width of the outer block head 321, an outer block groove 326 is formed along the groove bottom of the outer block groove 325, the outer block sipes 326 have a J-shaped profile, the outer block sipes 326 have a zigzag microscopic shape, and the outer block sipes 326 have a width one sixth of the width of the outer block grooves 325, as shown in fig. 11, 12, and 13.

Specifically, the outer block head 321 extends to the shoulder, the shoulder is provided with a first trapezoidal block 41 and a second trapezoidal block 42, the block group 30 is divided into a first block group 301 and a second block group 302 according to the size, the outer block head 321 of the first block group 301 and the first trapezoidal block 41 are connected together through an inward-concave arc transition section, the outer block sipe 326 and the outer sipe 325 of the outer block head of the first block group 302 are cut off from the inward-concave arc transition section, as shown in fig. 11, the outer block head 321 and the second trapezoidal block 41 of the second block group 302 are connected together through an outward-convex arc transition section, the outer sipe 326 and the outer sipe 325 of the outer block head of the second block group 302 extend to the shoulder, so as to facilitate drainage, as shown in fig. 12, the first trapezoidal block 41 and the second trapezoidal block 42 are both trapezoidal blocks, and the side connected with the outer block head 321 is a lower bottom, and the length of the lower bottom of the first trapezoidal block 41 and the second trapezoidal block 42 is greater than the width of the outer block head 321.

Specifically, as another embodiment shown in fig. 14, a third trapezoidal block 43 is further disposed on the shoulder, and the lower base of the third trapezoidal block 43 is adjacent to the upper base of the first trapezoidal block 41.

The middle thickness of the tread of the half part of the tread is 12mm (the size of the half part of the tread), the thickness of the tire shoulder part is 14.5mm, the width of the tire shoulder part is 258mm, the total width is 328mm, the environment-friendly design is adopted, and a coupling agent and high-wear-resistance carbon black are added to improve the wear resistance and the tear resistance; a buffer layer is arranged between the tire tread and the cord fabric cap strip, the buffer layer has the main functions of better bonding, heat dissipation and the like between the tire tread rubber and the cap strip, a belt ply edge rubber 5 is arranged between the inner side of the tire shoulder and the belt ply to play the roles of protection and buffer, generally, the width of the 1 st belt ply is 6mm larger than that of a driving surface, the tire designed at this time belongs to an off-road tire, and the width and the value of the off-road tire are the same; the cord fabric crown strip is dipped by 1400dtex/2 chinlon 66 to reduce the centrifugal force of the tire in high-speed running, thereby reducing the deformation and shearing force of a belt ply and improving the high-speed performance and durability of the tire; the cord fabric layer plays an important role in fatigue resistance of the tire, particularly in flex fatigue resistance, and 1500D/250E polyester cord fabric with high modulus, low shrinkage and low heat generation is selected in combination with actual conditions of a factory, so that the polyester cord fabric not only can reduce deformation of the tire, but also can improve fatigue resistance and high speed performance of the radial tire, reduce heat generation in the running process of the tire and prolong the service life of the tire. As the mud stone pattern tire needs to deal with the field complex service environment, the tire body needs higher strength to improve the performances of impact resistance, puncture resistance and the like, and the design adopts 3 layers of cord fabrics to ensure the field driving safety.

The performance of the finished product is as follows:

the outer edge dimension of the finished tire is measured according to GB/T521-2012 'measuring method for outer edge dimension of tire'. The result shows that under the standard specified test condition, the inflatable outer diameter is 882mm, the inflatable section width is 312mm, and the design requirement is met. The strength performance of the tire is tested according to GB/T4501-2016 indoor test method for the performance of truck tires, the inflation pressure is 450kPa, the diameter of a pressure head is 19mm, the failure energy of a test end point is 1033.9J (pressure penetration at a point 5), the failure energy is 201 percent of the national standard value, and the design requirement is met. The endurance performance of the tire is tested according to the American FMVSS139 standard, and the low-air pressure endurance test stage is entered after the conventional endurance test of 34h is completed. The finished tire runs for 51.5 hours in an accumulated way at the speed of 120km/h, the load rate is 120 percent at the end of the test, the tire is not damaged, and the durability exceeds the standard requirement. The high-speed performance of the tire is tested according to GB/T4501-2016, the test load is 1156.5kg, the inflation pressure is 450kPa, the initial speed is 140km/h, and the delay test is carried out by increasing the speed by 10km/h every 10min after the test time specified by the standard is finished. When the test is finished, the tire runs for 87min in an accumulated mode, the tire shoulder delaminating occurs when the speed reaches 190km/h, and the tire shoulder delaminating is far higher than the maximum speed of 160km/h of the tire.

In the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model discloses not be limited to the embodiment, anybody should learn the structural change who makes under the teaching of the utility model, all with the utility model discloses have the same or close technical scheme, all fall into the utility model discloses an within the protection scope.

The technology, shape and construction parts which are not described in detail in the present invention are all known technology.

Claims (10)

1. The utility model provides a special decorative pattern tire of cross country vehicle which characterized in that: the tire comprises a tire crown part, a tire shoulder part, a tire side part and a tire bead part, and sequentially comprises a tread rubber, a cord fabric crown strip, a belt ply, a cord fabric layer and a lining layer from outside to inside, wherein 2 layers of belt plies are covered on the radial outer side of the cord fabric layer, 2 layers of cord fabric crown strips are flatly paved on the radial outer side of the belt ply, the belt ply consists of 2 layers of steel wire cord fabrics, and the cord angle is 24 degrees;

the tread surface comprises longitudinal drainage ditches, transverse drainage ditches and pattern blocks, the number of the longitudinal drainage ditches is 1, the longitudinal drainage ditches are positioned on a longitudinal central axis of the tread of the tire, each transverse drainage ditch comprises a plurality of transverse drainage ditch groups arranged on two sides of the longitudinal drainage ditches, each transverse drainage ditch group comprises 1S-shaped transverse drainage ditch and 1 arc-shaped transverse drainage ditch which are adjacent, each pattern block is formed by dividing the longitudinal drainage ditches, the S-shaped transverse drainage ditches and the arc-shaped transverse drainage ditches and comprises inner pattern blocks and outer pattern blocks which are alternately arranged, the width of one end, close to the longitudinal drainage ditches, of each inner pattern block is larger than that of one end, close to a tire shoulder, of each outer pattern block is smaller than that of one end, close to a tire shoulder, of each inner pattern block sequentially comprises an inner pattern block head part, an inner pattern block waist part and an inner pattern block tail part from near to far according to the distance between each inner pattern block and the longitudinal drainage ditches, the outer pattern block sequentially comprises an outer pattern block head, an outer pattern block waist and an outer pattern block tail according to the distance from the outer pattern block to the longitudinal drainage ditch from far to near.

2. A patterned tire for off-road vehicles as claimed in claim 1, wherein: the tire bead is internally provided with a tire bead steel wire, the tire bead steel wire is a tempered steel wire with the diameter of 1.3mm, and the diameter of the single wire after rubber coating is 1.6 mm.

3. A patterned tire for off-road vehicles as claimed in claim 1, wherein: the belt ply comprises 2 layers of 3 multiplied by 0.2+6 multiplied by 0.35HT steel cord fabrics, the cord angle is 24 degrees, the cord fabric crown strip adopts 2 layers of 1400dtex/2 nylon 66 dipped cord fabric crown strip, and the width of the 1 st layer of belt ply is the same as the width of the driving surface.

4. A patterned tire for off-road vehicles as claimed in claim 1, wherein: the profile shape of longitudinal drainage ditch is continuous S-shaped, and the longitudinal drainage ditch comprises a plurality of longitudinal ditch section groups end to end, and every longitudinal ditch section group is including being linked together first longitudinal ditch section and the longitudinal ditch section of second, and the first half section of first longitudinal ditch section is to the left bank and the lower half section slope right, and the first half section slope right of the longitudinal ditch section of second and the lower half section slope left, and the cross section of longitudinal drainage ditch is trapezium structure, and the contained angle between both sides wall and the base is 82 degrees.

5. A patterned tire for off-road vehicles as claimed in claim 1, wherein: the S-shaped transverse drainage ditch is S-shaped in outline shape, and the arc-shaped transverse drainage ditch is arc-shaped in outline shape; a plurality of lateral drainage ditch group staggered arrangement are in longitudinal drainage ditch both sides, be located two adjacent lateral drainage ditch groups of longitudinal drainage ditch both sides, its shape is symmetrical as the symmetry axis with the vertical axis of tire hat, its position is staggered arrangement, 1 lateral drainage ditch group' S longitudinal length is 1 pitch, the staggered distance that is located the lateral drainage ditch group of longitudinal drainage ditch both sides is half pitch, longitudinal drainage ditch communicates with S-shaped lateral drainage ditch and arc lateral drainage ditch respectively, S-shaped lateral drainage ditch, arc lateral drainage ditch cross section is the trapezium structure, the contained angle between both sides wall and the base is 82 degrees.

6. A patterned tire for off-road vehicles as claimed in claim 1, wherein: the adjacent 1 inner pattern block and 1 outer pattern block are used as a pattern block group, a plurality of pattern block groups are arranged on two sides of the longitudinal drainage ditch in a staggered mode, two adjacent pattern block groups located on two sides of the longitudinal drainage ditch are symmetrical to each other by taking a longitudinal central axis of a tire crown as a symmetry axis, and the pattern block groups are arranged in a staggered mode.

7. A patterned tire for off-road vehicles as claimed in claim 1, wherein: the heights of the head part and the tail part of the inner pattern block from the groove bottom of the S-shaped transverse drainage groove are respectively a certain value, the height of the head part of the inner pattern block is greater than the height of the tail part of the inner pattern block, the head part and the tail part of the inner pattern block are connected through the waist part of the inner pattern block, the heights of two ends of the waist part of the inner pattern block are respectively flush with the head part and the tail part of the inner pattern block, the height of the waist part of the inner pattern block is changed in a linear mode, namely, the cross section of the tail part of the inner pattern block is in a trapezoidal structure, the included angle between the two side walls and the top surface is 85 degrees respectively, the included angle between one side wall of the tail part of the inner pattern block, which is far away from the waist part of the inner pattern, and the top surface of the inner pattern block is 45 degrees, the inner pattern block is transited to the bottom of the longitudinal drainage ditch, and an inner pattern block notch is arranged at the middle position of one side of the head part of the inner pattern block, which is adjacent to the arc-shaped transverse drainage ditch.

8. A patterned tire for off-road vehicles as claimed in claim 1, wherein: the heights of the head part of the outer pattern block and the tail part of the outer pattern block from the ditch bottom of the drainage ditch are respectively a certain value, the height of the head part of the outer pattern block is greater than that of the tail part of the outer pattern block, the head part of the outer pattern block and the tail part of the outer pattern block are connected through the waist part of the outer pattern block, the heights of two ends of the waist part of the outer pattern block are respectively flush with the head part of the outer pattern block and the tail part of the outer pattern block, the height of the waist part of the outer pattern block is linearly gradually changed, namely the height is gradually and uniformly decreased from one end connected with the head part of the outer pattern block to one end connected with the tail part of the outer pattern block, the outline of the head part of the outer pattern block is an irregular N-edge shape, N is greater than or equal to 10, an outer pattern block notch is formed in the middle position of one side, adjacent to the S-shaped drainage ditch, of the head part of the outer pattern block, the notch depth is less than one half of the width of the arc-shaped lateral drainage ditch and greater than one third of the width of the arc-shaped lateral drainage ditch, the outer pattern block groove is formed in the head portion of the outer pattern block, the outline shape of the outer pattern block groove is J-shaped, the depth of the outer pattern block groove is one fifth of the depth of the S-shaped transverse drainage ditch, the width of the outer pattern block groove is one fifth to one tenth of the width of the head portion of the outer pattern block, an outer pattern block cutter groove is formed along the groove bottom of the outer pattern block groove, the outline shape of the outer pattern block cutter groove is J-shaped, the microscopic shape of the outer pattern block cutter groove is sawtooth-shaped, and the width of the outer pattern block cutter groove is one sixth of the width of the outer pattern block groove.

9. A patterned tire for off-road vehicles as claimed in claim 8, wherein: the outer pattern block head extends to the tire shoulder, a first trapezoidal pattern block and a second trapezoidal pattern block are arranged on the tire shoulder, the pattern block group is divided into a first pattern block group and a second pattern block group, the second pattern block group and the first pattern block group are alternately distributed, the outer pattern block head of the first pattern block group is connected with the first trapezoidal pattern block through an inwards concave arc transition section, an outer pattern block sipe of the outer pattern block head of the first pattern block group is stopped with an arc transition section from an outer pattern groove to the inwards concave, the outer pattern block head of the second pattern block group is connected with the second trapezoidal pattern block through an outwards convex arc transition section, an outer pattern block sipe of the outer pattern block head of the second pattern group and an outer pattern groove extend to the tire shoulder, and the first trapezoidal pattern block and the second trapezoidal pattern block are both trapezoidal, and the edge connected with the head of the outer pattern block is a lower bottom, and the lengths of the lower bottoms of the first trapezoidal pattern block and the second trapezoidal pattern block are both larger than the width of the head of the outer pattern block.

10. A patterned tire for off-road vehicles as claimed in claim 9, wherein: and a third trapezoidal pattern block is further arranged on the tire shoulder, and the lower bottom of the third trapezoidal pattern block is adjacent to the upper bottom of the first trapezoidal pattern block.

Images