CN211441864U - Heavy load tire - Google Patents
Heavy load tire Download PDFInfo
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- CN211441864U CN211441864U CN202020112967.XU CN202020112967U CN211441864U CN 211441864 U CN211441864 U CN 211441864U CN 202020112967 U CN202020112967 U CN 202020112967U CN 211441864 U CN211441864 U CN 211441864U
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- groove
- shoulder
- pattern
- heavy load
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Abstract
The utility model relates to a heavy load tire, it includes the tread, the grounding part of tread includes central grounding part and the tire shoulder grounding part of locating central grounding part both sides; the tread is also provided with a first main groove and a second main groove which are arranged along the circumferential direction and a pattern groove which is arranged along the axial direction, the first main groove is provided with continuous bending, and each bending angle is 110-150 degrees; the first main groove, the second main groove and the pattern groove can form a plurality of central pattern blocks in a surrounding way of the central grounding part, and the included angle between the first main groove and the pattern groove is 110-150 degrees; the second main grooves and the pattern grooves can form a plurality of shoulder pattern blocks in a surrounding mode in the shoulder grounding part; the total area of the central pattern block and the total area of the tire shoulder pattern block respectively account for 40-50% of the total area of the grounding part. The brake has stronger braking force, load resistance and cutting resistance under heavy load, and the service life of the brake is prolonged.
Description
Technical Field
The utility model relates to a tire technical field, concretely relates to heavy load tire.
Background
With the strategic advance of 'one-by-one' and the annual increase of domestic capital investment, the sales volume of commercial vehicles keeps steadily increasing, and because the heavy truck sales volume is increased by 60% in 2017 after the large amount of railway, highway, petroleum pipeline and other projects are started along the line province, the dump truck is expected to become the main growth market of the heavy truck market in the coming years.
However, as the transportation market of the dump truck is short-distance, high-load and low-speed transportation, the main transportation carriers are ores (80%), mineral powder (20%), coal and the like, the speed is low in a mining area, generally about 20km/h, the road surface has more broken stones, tires are easy to cut, the treads fall off, the service life of the tires is shortened, and outside the mining area, the periphery of the mining area is mainly mixed roads, and the speed is generally 30-50 km/h. Therefore, the heavy duty tire used in such a case is strongly required to have braking force and load resistance.
How to provide a tire with stronger braking force, load resistance and cutting resistance under heavy load and prolong the service life of the tire is a technical problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a heavy load tire can have stronger braking force, anti load performance and anti cutting performance under heavy load, prolongs its life.
In order to solve the technical problem, the utility model provides a heavy load tire, it includes the tread, the earthing part of tread includes central earthing part and locates the tire shoulder earthing part of central earthing part both sides; the tread is also provided with a first main groove and a second main groove which are arranged along the circumferential direction and a pattern groove which is arranged along the axial direction, the first main groove is provided with continuous bending, and each bending angle is 110-150 degrees; the first main groove, the second main groove and the pattern groove can form a plurality of central pattern blocks around the central grounding part, and the included angle between the first main groove and the pattern groove is 110-150 degrees; the second main groove and the pattern groove can form a plurality of shoulder pattern blocks in a surrounding mode of the shoulder grounding part; the total area of the central pattern block and the total area of the tire shoulder pattern block respectively account for 40% -50% of the total area of the grounding part.
The first main groove and the second main groove are arranged along the circumferential direction of the tire, the pattern groove is arranged along the axial direction of the tire and penetrates through the first main groove and the second main groove, the first main groove is provided with continuous bends, the first main groove, the second main groove and the pattern groove form a plurality of intersection points on a grounding part of the tire surface and enclose to form a plurality of grounding pattern blocks, each grounding pattern block is a multi-angle pattern block, namely, each grounding pattern block is respectively provided with a plurality of inner angles, and the inner angles are different in size, so that the abrasion condition of each grounding pattern block can be inhibited, and the drainage performance of the tire surface is improved.
Specifically, the ground blocks include center blocks and shoulder blocks. The center pattern block is enclosed by three kinds of grooves of first main ditch, second main ditch and groove and closes and form to be located the axial (width direction) intermediate position of this tire tread, the tire shoulder pattern block is enclosed by two kinds of grooves of second main ditch and groove and closes and form, and is located the axial both sides of this tire tread, that is to say, the axial both sides of center pattern block all are the tire shoulder pattern block.
The total area of each central pattern block accounts for 0-50% of the total area of the grounding part of the tire, the total area of each tire shoulder pattern block accounts for 0-50% of the total area of the grounding part of the tire, and the rest areas are the areas occupied by the grooves (the first main groove, the second main groove and the pattern grooves).
The angle of each bend of the first main groove is between 110 degrees and 150 degrees, and the included angle between the first main groove and the groove is between 110 degrees and 150 degrees, so that the drainage performance of the tire tread can be improved under the condition of ensuring the central pattern block with a large area, the stability of the edge of each central pattern block can be ensured, the abnormal abrasion (such as partial abrasion) is avoided, the abrasion condition of each central pattern block is more uniform, the stability of the tire tread after long-time use is ensured, and the service life of the tire tread is prolonged.
Optionally, the shoulder land portion is further provided with a rib disposed on a side away from the central land portion, and the rib passes through the tread groove and is connected between two adjacent shoulder blocks.
Optionally, the ratio of the area of the reinforcing rib to the area of the shoulder pattern block is 0.1-0.2.
Optionally, an included angle between one side of the shoulder block facing the reinforcing rib and the axial direction of the tire is 2-15 °.
Optionally, the groove structure further comprises a plurality of projections arranged inside the groove at intervals along the length direction of the groove.
Optionally, the ratio of the area of the lug bosses to the area of the pattern grooves is 0.2-0.5; the ratio of the height of the lug boss to the depth of the pattern groove is 0.1-0.5.
Optionally, each central pattern block is further provided with a sipe, and the ratio of the depth to the width of the sipe is 1-2.
Optionally, a heat dissipation groove is further disposed on a side of each shoulder block away from the central land portion.
Optionally, the ratio of the area of the radiating groove to the area of the shoulder pattern block is 0.03-0.05.
Optionally, a chamfer radius between a side of the shoulder block facing the adjacent shoulder block and a side facing the central land portion is 10mm to 20 mm.
Drawings
Fig. 1 is a schematic structural view of a tread of a tire provided in an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a sipe.
In FIGS. 1-2, the reference numbers are illustrated as follows:
1-a central ground; 2-tire shoulder grounding part; 3-a first main trench; 4-a second main trench; 5-pattern grooves; 6-center pattern blocks; 7-shoulder pattern blocks; 8-reinforcing ribs; 9-boss; 10-sipes; 11-heat sink.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-2, fig. 1 is a schematic structural diagram of a tread of a tire according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of a sipe.
The embodiment of the utility model provides a heavy load tire, it includes the tread, the earthing part (such as TW shown in figure 1) of this tread includes central earthing part 1 and locates the tire shoulder earthing part 2 of central earthing part 1 both sides, concretely, this tread still is equipped with along the first main ditch 3 and the second main ditch 4 that circumference set up and the tread groove 5 of arranging along the axial, wherein, first main ditch 3 is equipped with the continuous bending (the slot that marks the central line as shown in figure 1), each bending angle all is in 110 ~ 150 within ranges, first main ditch 3, second main ditch 4 and tread groove 5 can enclose at central earthing part 1 and close and form a plurality of central decorative pattern pieces 6, the earthing part between first main ditch 3 and the tread groove 5 is 110 ~ 150, the total area of each central decorative pattern piece 6 accounts for 40% ~ 50% of the total area of TW of tread; the second main grooves 4 and the tread grooves 5 can form a plurality of shoulder blocks 7 around the shoulder land portion 2, and the total area of the shoulder blocks 7 accounts for 40% to 50% of the total area of the land portion of the tread.
In detail, the first main groove 3 and the second main groove 4 are both arranged along the circumferential direction of the tire, the pattern groove 5 is arranged along the axial direction of the tire and penetrates through the first main groove 3 and the second main groove 4, wherein the first main groove 3 is provided with continuous bends, the first main groove 3, the second main groove 4 and the pattern groove 5 form a plurality of intersection points at the grounding part of the tread and enclose to form a plurality of grounding pattern blocks, each grounding pattern block is a multi-angle pattern block, namely, each grounding pattern block is respectively provided with a plurality of inner angles, and the inner angles are different in size, therefore, the abrasion condition of each grounding pattern block can be inhibited, and the drainage performance of the tread of the tire is improved.
Specifically, the ground blocks include center blocks 6 and shoulder blocks 7. The center pattern block 6 is formed by enclosing three grooves, namely a first main groove 3, a second main groove 4 and a pattern groove 5, and is positioned in the middle position of the axial direction (width direction) of the tire tread, and the shoulder pattern block 7 is formed by enclosing two grooves, namely the second main groove 4 and the pattern groove 5, and is positioned on two sides of the axial direction of the tire tread, namely, two sides of the axial direction of the center pattern block 6 are the shoulder pattern blocks 7.
The total area of each central pattern block 6 accounts for 40-50% of the total area of the tire grounding part TW, the total area of each tire shoulder pattern block 7 accounts for 40-50% of the total area of the tire grounding part TW, and the rest areas are the areas occupied by the grooves (the first main grooves 3, the second main grooves 4 and the pattern grooves 5).
In the embodiment, the bending angles (as shown in the figure, the angle beta) of the first main grooves 3 are all between 110 degrees and 150 degrees, and the included angles (as shown in the figure, the angle alpha and the angle gamma) between the first main grooves 3 and the groove 5 are also all between 110 degrees and 150 degrees, so that the drainage performance of the tire tread can be improved under the condition that the central pattern blocks 6 with large areas are ensured, meanwhile, the stability of the edges of the central pattern blocks 6 can be ensured, the abnormal abrasion (such as partial abrasion) is avoided, the abrasion condition of each central pattern block 6 is more uniform, the stability of the tire tread after long-time use is ensured, and the service life of the tire tread is prolonged.
In the above embodiment, the shoulder land portion 2 is further provided with the rib 8, the rib 8 is arranged on one side far away from the central land portion 1, that is, the rib 8 is arranged on the shoulder land portion 2 and is positioned on the outer edge and the inner edge of the tire land portion, that is, one side close to the tire side portion, the rib 8 passes through the tread groove 5 and is connected between two adjacent shoulder pattern blocks 7, so as to play a role of connecting between the two shoulder pattern blocks 7, increase the rigidity of each shoulder pattern block 7, improve the cut resistance of each shoulder pattern block 7, pass through a road surface with more broken stones in a mining area, avoid the occurrence of the condition of block dropping, and improve the service life of the tire.
Furthermore, the area ratio of the reinforcing ribs 8 to the area ratio of the tire shoulder pattern blocks 7 is 0.1-0.2, so that the rigidity of the tire shoulder pattern blocks 7 is guaranteed, and meanwhile the drainage performance of the tire tread is guaranteed.
In the above embodiment, the included angle (α 1 angle and β 1 angle shown in fig. 1) between the side of the shoulder block 7 facing the rib 8 and the axial direction of the tire is 2 ° to 15 °. By the arrangement, the tire shoulder pattern blocks 7 can be more uniformly worn, the stability of the tire tread after long-time use is ensured, and the service life of the tire tread is prolonged.
In the above embodiment, the tire further comprises a plurality of bosses 9 arranged inside the groove 5 at intervals along the length direction of the groove 5, and the arrangement of the bosses 9 can avoid the situation that a large stone is clamped into the groove 5 and cuts the groove 5, so that the cutting resistance and the puncture resistance of the tire tread are improved.
Specifically, the ratio of the area of the boss 9 to the area of the groove 5 is 0.2 to 0.5, and the ratio of the height of the boss 9 to the depth of the groove 5 is 0.1 to 0.5. So set up, can guarantee its drainage performance when promoting the cutting performance of preventing of this tire and prevent stinging performance. Specifically, the end surface of the boss 9 may be a flat surface or a wavy surface, and is not particularly limited herein.
In the above embodiment, each center block 6 is further provided with the sipe 10, and since the ground contact area of each center block 6 is large, the sipe 10 can ensure the drainage performance of the center block 6, and at the same time, the distance d/w between the depth d (shown in fig. 2) and the width w (shown in fig. 1) of each sipe 10 is 1-2, so that each sipe 10 can ensure that each center block 6 has good wear performance while achieving good drainage performance.
In the above embodiment, the shoulder blocks 7 are further provided with heat dissipation grooves 11 on the side away from the central land portion 1 to ensure the heat dissipation effect of the tire. Further, the area ratio of the radiating groove 11 to the area ratio of the tire shoulder pattern block 7 is 0.03-0.05, and by the arrangement, the tire shoulder pattern block 7 can be guaranteed to have a large grounding area while the good radiating effect is guaranteed.
In the above embodiment, the chamfer radius (R shown in fig. 1) between the side of each shoulder block 7 facing the other shoulder block 7 adjacent thereto and the side facing the central land portion 1 is 10mm to 20mm, so that the uniformity of the edge of each shoulder block 7 can be ensured, uneven wear can be avoided, and the service life of the tire can be ensured.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A heavy load tire is characterized by comprising a tread, wherein a land part of the tread comprises a central land part (1) and a tire shoulder land part (2) arranged at two sides of the central land part (1);
the tread is also provided with a first main groove (3) and a second main groove (4) which are arranged along the circumferential direction and a pattern groove (5) which is arranged along the axial direction, the first main groove (3) is provided with continuous bending, and each bending angle is 110-150 degrees;
the first main groove (3), the second main groove (4) and the pattern groove (5) can form a plurality of central pattern blocks (6) in a surrounding mode on the central grounding part (1), and an included angle between the first main groove (3) and the pattern groove (5) is 110-150 degrees;
the second main groove (4) and the tread groove (5) can form a plurality of shoulder pattern blocks (7) in a surrounding mode on the shoulder grounding part (2);
the total area of the central pattern block (6) and the total area of the tire shoulder pattern block (7) respectively account for 40% -50% of the total area of the grounding part.
2. The heavy load tire according to claim 1, wherein the shoulder land portion (2) is further provided with a rib (8) provided on a side away from the center land portion (1), the rib (8) passing through the groove (5) and being connected between adjacent two of the shoulder blocks (7).
3. The heavy load tire according to claim 2, wherein the ratio of the area of the rib (8) to the area of the shoulder block (7) is 0.1 to 0.2.
4. A heavy load tyre as claimed in claim 2, wherein the shoulder blocks (7) have an angle of between 2 ° and 15 ° with respect to the axial direction of the tyre, on the side facing the rib (8).
5. A heavy load tyre according to any one of claims 1 to 4, further comprising a plurality of projections (9) spaced apart along the length of said grooves (5) and disposed internally thereof.
6. A heavy load tire according to claim 5, wherein the ratio of the area of said projections (9) to the area of said grooves (5) is 0.2 to 0.5;
the ratio of the height of the lug boss (9) to the depth of the pattern groove (5) is 0.1-0.5.
7. A heavy load tire according to any one of claims 1 to 4, wherein each of the center blocks (6) is further provided with a sipe (10), and the ratio of the depth to the width of the sipe (10) is 1 to 2.
8. A heavy load tyre according to any one of claims 1 to 4, wherein each of said shoulder blocks (7) is further provided with a heat dissipating groove (11) on the side remote from said central land portion (1).
9. The heavy load tire according to claim 8, wherein the ratio of the area of the heat dissipation groove (11) to the area of the shoulder block (7) is 0.03 to 0.05.
10. The heavy load tire according to any one of claims 1 to 4, wherein a chamfer radius between a side of the shoulder block (7) facing the adjacent shoulder block (7) and a side facing the central land portion (1) is 10mm to 20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020112967.XU CN211441864U (en) | 2020-01-17 | 2020-01-17 | Heavy load tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020112967.XU CN211441864U (en) | 2020-01-17 | 2020-01-17 | Heavy load tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211441864U true CN211441864U (en) | 2020-09-08 |
Family
ID=72295307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020112967.XU Withdrawn - After Issue CN211441864U (en) | 2020-01-17 | 2020-01-17 | Heavy load tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211441864U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111137073A (en) * | 2020-01-17 | 2020-05-12 | 正新橡胶（中国）有限公司 | Heavy load tire |
-
2020
- 2020-01-17 CN CN202020112967.XU patent/CN211441864U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111137073A (en) * | 2020-01-17 | 2020-05-12 | 正新橡胶（中国）有限公司 | Heavy load tire |
| CN111137073B (en) * | 2020-01-17 | 2024-09-06 | 正新橡胶（中国）有限公司 | Heavy load tire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200908 Effective date of abandoning: 20240906 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200908 Effective date of abandoning: 20240906 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |