Tire

Abstract

The utility model provides a tire, which is provided with a predetermined plane parallel to the central axis of the tire, the projection of the central line of the tire tread on the predetermined plane is a first central line, the boundary line between the tire shoulder and the tire tread is a first boundary line, and the projection point of the first boundary line on the predetermined plane is a first boundary point. The projection of the end face, farthest from the central axis of the tire, of the tire cord fabric layer on a predetermined plane is a first cord fabric line, and a vertical line between the first boundary point and the first cord fabric line is a tire shoulder line; the tire is provided with a belted layer structure, the projection of the belted layer structure on a preset plane is the projection of the belted layer structure, and the point, farthest from the first center line, of the projection of the belted layer structure in the axial direction of the tire is located on the side, away from the first center line, of the tire shoulder line. According to the wide-body dumper tire, the problem that a tire crown and a tire side are easy to burst after a belted layer of the wide-body dumper tire in the prior art is damaged is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, in particular to a tire. Background Art

[0002] Wide-body dump trucks are characterized by high loads, high speeds, and poor road conditions. Consequently, they place stringent demands on tire performance, with the highest requirements placed on the belt layer, the primary load-bearing component of an all-steel OTR tire. As the primary load-bearing component, the belt layer is crucial for tire load bearing and maintaining rigidity, and therefore plays a crucial role in tire performance and lifespan.

[0003] The belt layer of wide-body dump truck tires is easily damaged. Once the belt layer is damaged, the cracks will develop in all directions. When the belt layer is damaged, the cracks will easily develop toward the tread, causing the tread and the belt layer to separate, resulting in tread delamination. The tread is cut by external force, which can easily cause the crown to burst. When the belt layer is damaged, the cracks will easily develop toward the sidewall, causing sidewall delamination in the middle of the sidewall. At the same time, since the sidewall is relatively thin, it is easy to cause sidewall burst. Utility Model Content

[0004] The main purpose of the utility model is to provide a tire to solve the problem in the prior art that the belt layer of a wide-body dump truck tire is easily damaged and causes the crown and sidewall to burst.

[0005] In order to achieve the above-mentioned purpose, according to the utility model, a tire is provided, the tire has a predetermined plane parallel to its central axis, the projection of the center line of the tire tread on the predetermined plane is the first center line, the intersection line between the tire shoulder and the tire tread is the first boundary line, the projection point of the first boundary line on the predetermined plane is the first boundary point, the projection of the end face of the tire cord layer farthest from the central axis of the tire on the predetermined plane is the first cord line, and the perpendicular line between the first boundary point and the first cord line is the shoulder line; the tire has a belt layer structure, and the projection of the belt layer structure on the predetermined plane is the belt layer structure projection; along the axial direction of the tire, the point of the belt layer structure projection farthest from the first center line is located on the side of the shoulder line away from the first center line.

[0006] Furthermore, the belt structure includes a plurality of belt layers, and along the axial direction of the tire, a point of projection of at least one belt layer on a predetermined plane farthest from the first center line is located on a side of the shoulder line away from the first center line.

[0007] Furthermore, the belt layer structure includes a first belt layer, a second belt layer, a third belt layer and a fourth belt layer arranged in sequence, the first belt layer is arranged on the side of the second belt layer away from the tread, and along the axial direction of the tire, the projection of the first belt layer on the predetermined plane has a first endpoint farthest from the first center line, the projection of the second belt layer on the predetermined plane has a second endpoint farthest from the first center line, the projection of the third belt layer on the predetermined plane has a third endpoint farthest from the first center line, and the projection of the fourth belt layer on the predetermined plane has a fourth endpoint farthest from the first center line; wherein the second endpoint is the point of the belt layer structure projection farthest from the first center line, and the second endpoint is located on the side of the shoulder line away from the first center line.

[0008] Furthermore, along the extension direction of the first center line, the projection of the second belt layer on the predetermined plane has a third boundary line and a fourth boundary line that are relatively set, the fourth boundary line is set away from the tread relative to the third boundary line, and the intersection of the shoulder line and the fourth boundary line is the second boundary point; the distance between the second endpoint and the second boundary point along the axial direction of the tire is e, and the value range of e is: 10mm≤e≤20mm.

[0009] Further, a distance e between the second endpoint and the second boundary point along the axial direction of the tire is equal to 15 mm.

[0010] Furthermore, along the axial direction of the tire, the distance between the first boundary point and the first center line is a, and the distance between the second endpoint and the first center line is d; wherein, d=(0.85±0.02)*a.

[0011] Furthermore, along the axial direction of the tire, the distance between the second endpoint and the first center line, the distance between the third endpoint and the first center line, the distance between the first endpoint and the first center line, and the distance between the fourth endpoint and the first center line gradually decrease.

[0012] Furthermore, along the axial direction of the tire, the distance between the first endpoint and the second endpoint is t1, the distance between the second endpoint and the third endpoint is t2, and the distance between the third endpoint and the fourth endpoint is t3; wherein, 10mm≤t1≤15mm, 10mm≤t2≤15mm, and 10mm≤t3≤15mm.

[0013] Furthermore, t1 is equal to 12 mm, t2 is equal to 12 mm, and t3 is equal to 12 mm.

[0014] Furthermore, a projection of the tread of the tire on the predetermined plane is a fifth projection line, and the fourth boundary line is arranged parallel to the fifth projection line.

[0015] Applying the technical solution of the present utility model, the tire has a predetermined plane parallel to its central axis, the projection of the center line of the tire tread on the predetermined plane is the first center line, the intersection line between the tire shoulder and the tire tread is the first boundary line, the projection point of the first boundary line on the predetermined plane is the first boundary point, the projection of the end face of the tire cord layer farthest from the central axis of the tire on the predetermined plane is the first cord line, and the perpendicular line between the first boundary point and the first cord line is the shoulder line; the tire has a belt structure, and the projection of the belt structure on the predetermined plane is the belt structure projection. By setting the point of the belt layer structure projection along the axial direction of the tire that is farthest from the first center line, it is located on the side of the shoulder line away from the first center line, so that when the belt layer structure is damaged, the crack will extend toward the top of the anti-scratch boss on the tire sidewall. Since the area near the anti-scratch boss is thicker and the strength of the area near the anti-scratch boss is greater, even if a crack occurs above the anti-scratch boss on the tire sidewall, it is not easy to cause the tire to burst directly. Compared with the crack extending toward the sidewall or crown, the tire is not easy to burst directly, thereby solving the problem in the prior art that the belt layer of the wide-body dump truck tire is prone to bursting of the crown and sidewall after being damaged; at the same time, since the crack above the anti-scratch boss on the tire sidewall is relatively easy to be found, the crack can be discovered and repaired in time, further avoiding tire blowout and improving the safety of tire use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the projection structure of the tire according to the present utility model on a predetermined plane is shown.

[0018] The above drawings include the following reference numerals:

[0019] 1. First center line; 2. First boundary point; 3. First cord line; 4. Shoulder line; 5. Fourth boundary line; 10. First belt layer; 20. Second belt layer; 30. Third belt layer; 40. Fourth belt layer; 11. First endpoint; 12. Second endpoint; 13. Third endpoint; 14. Fourth endpoint; 7. Fifth projection line. DETAILED DESCRIPTION

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0022] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0023] Please refer to Figure 1 The utility model provides a tire, the tire having a predetermined plane parallel to its central axis, the projection of the center line of the tire tread on the predetermined plane is a first center line 1, the boundary line between the tire shoulder and the tire tread is a first boundary line, the projection point of the first boundary line on the predetermined plane is a first boundary point 2, the projection of the end face of the tire cord layer farthest from the central axis of the tire on the predetermined plane is a first cord line 3, and the perpendicular line between the first boundary point 2 and the first cord line 3 is a shoulder line 4; the tire has a belt structure, and the projection of the belt structure on the predetermined plane is the belt structure projection; along the axial direction of the tire, the point of the belt structure projection farthest from the first center line 1 is located on the side of the shoulder line 4 away from the first center line 1.

[0024] The tire of the present invention has a predetermined plane parallel to its central axis, the projection of the center line of the tire tread on the predetermined plane is a first center line 1, the intersection line between the tire shoulder and the tire tread is a first boundary line, the projection point of the first boundary line on the predetermined plane is a first boundary point 2, the projection of the end face of the tire cord layer farthest from the central axis of the tire on the predetermined plane is a first cord line 3, and the perpendicular line between the first boundary point 2 and the first cord line 3 is a shoulder line 4; the tire has a belt structure, and the projection of the belt structure on the predetermined plane is the belt structure projection. By setting the point of the belt layer structure projection along the axial direction of the tire that is farthest from the first center line 1, it is located on the side of the shoulder line 4 away from the first center line 1, so that when the belt layer structure is damaged, the crack will extend toward the top of the anti-scratch boss on the tire sidewall. Since the area near the anti-scratch boss is thicker and the strength of the area near the anti-scratch boss is greater, even if a crack occurs above the anti-scratch boss on the tire sidewall, it is not easy to cause the tire to burst directly. Compared with the crack extending toward the sidewall or crown, the tire is not easy to burst directly, thereby solving the problem in the prior art that the belt layer of the wide-body dump truck tire is prone to bursting of the crown and sidewall after being damaged; at the same time, since the crack above the anti-scratch boss on the tire sidewall is relatively easy to be found, the crack can be discovered and repaired in time, further avoiding tire blowout and improving the safety of tire use.

[0025] In this embodiment, the belt structure includes multiple belt layers. Along the axial direction of the tire, the point of the projection of at least one belt layer on the predetermined plane farthest from the first center line 1 is located on the side of the shoulder line 4 away from the first center line 1.

[0026] Specifically, such an arrangement further ensures that when the belt structure is damaged, the crack will extend toward the top of the anti-scratch boss on the tire sidewall, effectively preventing the crack from extending toward the sidewall or crown.

[0027] In this embodiment, the belt layer structure includes a first belt layer 10, a second belt layer 20, a third belt layer 30 and a fourth belt layer 40 placed in sequence. The first belt layer 10 is arranged on the side of the second belt layer 20 away from the tread. Along the axial direction of the tire, the projection of the first belt layer 10 on the predetermined plane has a first endpoint 11 farthest from the first center line 1, the projection of the second belt layer 20 on the predetermined plane has a second endpoint 12 farthest from the first center line 1, the projection of the third belt layer 30 on the predetermined plane has a third endpoint 13 farthest from the first center line 1, and the projection of the fourth belt layer 40 on the predetermined plane has a fourth endpoint 14 farthest from the first center line 1; wherein the second endpoint 12 is the point of the belt layer structure projection farthest from the first center line 1, and the second endpoint 12 is located on the side of the shoulder line 4 away from the first center line 1.

[0028] Specifically, by setting the second endpoint 12 as the point of the belt layer structure projection farthest from the first center line 1, the second endpoint 12 is located on the side of the shoulder line 4 away from the first center line 1, thereby ensuring that the point of the belt layer structure projection farthest from the first center line 1 is located on the side of the shoulder line 4 away from the first center line 1, thereby ensuring that when the belt layer structure is damaged, the crack will extend toward the top of the anti-scratch boss on the sidewall of the tire, effectively preventing the crack from extending toward the sidewall or crown.

[0029] In this embodiment, along the extension direction of the first center line 1, the projection of the second belt layer 20 on the predetermined plane has a third boundary line and a fourth boundary line 5 that are relatively set. The fourth boundary line 5 is set away from the tread relative to the third boundary line, and the intersection of the shoulder line 4 and the fourth boundary line 5 is the second boundary point; the distance between the second endpoint 12 and the second boundary point along the axial direction of the tire is e, and the value range of e is: 10mm≤e≤20mm.

[0030] Specifically, by limiting the positional relationship between the second endpoint 12 and the shoulder line 4, it is fully ensured that the second endpoint 12 is located on the side of the shoulder line 4 away from the first center line 1, thereby ensuring that when the belt layer structure is damaged, the crack will extend toward the top of the anti-scratch boss on the side of the tire.

[0031] In this embodiment, the distance e between the second endpoint 12 and the second boundary point along the axial direction of the tire is equal to 15 mm.

[0032] Specifically, such an arrangement further ensures that when the belt structure is damaged, the crack will extend toward the top of the anti-scratch boss on the tire sidewall, effectively preventing the crack from extending toward the sidewall or crown.

[0033] In this embodiment, along the axial direction of the tire, the distance between the first boundary point 2 and the first center line 1 is a, and the distance between the second endpoint 12 and the first center line 1 is d; where d=(0.85±0.02)*a.

[0034] Specifically, by limiting the position of the second endpoint 12, it is fully ensured that the second endpoint 12 is located on the side of the shoulder line 4 away from the first center line 1, thereby ensuring that when the belt layer structure is damaged, the crack will extend toward the anti-scratch boss on the tire sidewall.

[0035] In this embodiment, along the axial direction of the tire, the distance between the second endpoint 12 and the first center line 1, the distance between the third endpoint 13 and the first center line 1, the distance between the first endpoint 11 and the first center line 1, and the distance between the fourth endpoint 14 and the first center line 1 gradually decrease.

[0036] Specifically, such an arrangement can ensure that the first endpoint 11, the second endpoint 12, the third endpoint 13 and the fourth endpoint 14 are staggered with each other, avoiding the first endpoint 11, the second endpoint 12, the third endpoint 13 and the fourth endpoint 14 being too close to each other, resulting in increased shear force on the belt layer structure, thereby avoiding premature damage to the belt layer structure.

[0037] In this embodiment, along the axial direction of the tire, the distance between the first endpoint 11 and the second endpoint 12 is t1, the distance between the second endpoint 12 and the third endpoint 13 is t2, and the distance between the third endpoint 13 and the fourth endpoint 14 is t3; wherein, 10mm≤t1≤15mm, 10mm≤t2≤15mm, and 10mm≤t3≤15mm.

[0038] Specifically, by limiting the distance between the first endpoint 11, the second endpoint 12, the third endpoint 13 and the fourth endpoint 14, it can be further ensured that the first endpoint 11, the second endpoint 12, the third endpoint 13 and the fourth endpoint 14 are staggered with each other, thereby avoiding the first endpoint 11, the second endpoint 12, the third endpoint 13 and the fourth endpoint 14 being too close to each other.

[0039] In this embodiment, t1 is equal to 12 mm, t2 is equal to 12 mm, and t3 is equal to 12 mm.

[0040] Specifically, such an arrangement further ensures that the first endpoint 11 , the second endpoint 12 , the third endpoint 13 and the fourth endpoint 14 are relatively close to each other, resulting in an increase in the shear force on the belt structure.

[0041] In this embodiment, the projection of the tire tread on the predetermined plane is a fifth projection line 7 , and the fourth boundary line 5 is arranged parallel to the fifth projection line 7 .

[0042] Specifically, such an arrangement can ensure that the overall curve of the second belt layer 20 is parallel to the tread of the tire, thereby preventing the belt layer structure from being damaged prematurely.

[0043] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0044] The tire of the present invention has a predetermined plane parallel to its central axis, the projection of the center line of the tire tread on the predetermined plane is a first center line 1, the intersection line between the tire shoulder and the tire tread is a first boundary line, the projection point of the first boundary line on the predetermined plane is a first boundary point 2, the projection of the end face of the tire cord layer farthest from the central axis of the tire on the predetermined plane is a first cord line 3, and the perpendicular line between the first boundary point 2 and the first cord line 3 is a shoulder line 4; the tire has a belt structure, and the projection of the belt structure on the predetermined plane is the belt structure projection. By setting the point of the belt layer structure projection along the axial direction of the tire that is farthest from the first center line 1, it is located on the side of the shoulder line 4 away from the first center line 1, so that when the belt layer structure is damaged, the crack will extend toward the top of the anti-scratch boss on the tire sidewall. Since the area near the anti-scratch boss is thicker and the strength of the area near the anti-scratch boss is greater, even if a crack occurs above the anti-scratch boss on the tire sidewall, it is not easy to cause the tire to burst directly. Compared with the crack extending toward the sidewall or crown, the tire is not easy to burst directly, thereby solving the problem in the prior art that the belt layer of the wide-body dump truck tire is prone to bursting of the crown and sidewall after being damaged; at the same time, since the crack above the anti-scratch boss on the tire sidewall is relatively easy to be found, the crack can be discovered and repaired in time, further avoiding tire blowout and improving the safety of tire use.

[0045] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0046] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tire, characterized in that: The tire has a predetermined plane parallel to its central axis, the projection of the center line of the tire tread on the predetermined plane is a first center line (1), the intersection line between the tire shoulder and the tire tread is a first boundary line, the projection point of the first boundary line on the predetermined plane is a first boundary point (2), the projection of the end face of the tire cord layer farthest from the central axis of the tire on the predetermined plane is a first cord line (3), and the perpendicular line between the first boundary point (2) and the first cord line (3) is a shoulder line (4); The tire has a belt layer structure, and the projection of the belt layer structure on the predetermined plane is the belt layer structure projection; along the axial direction of the tire, the point of the belt layer structure projection farthest from the first center line (1) is located on the side of the shoulder line (4) away from the first center line (1).

2. The tire according to claim 1, wherein The belt structure comprises a plurality of belt layers, and along the axial direction of the tire, the point of the projection of at least one of the belt layers on the predetermined plane that is farthest from the first center line (1) is located on the side of the shoulder line (4) away from the first center line (1).

3. The tire according to claim 1, wherein: The belt layer structure comprises a first belt layer (10), a second belt layer (20), a third belt layer (30) and a fourth belt layer (40) which are arranged in sequence, wherein the first belt layer (10) is arranged on a side of the second belt layer (20) away from the tread, and along the axial direction of the tire, the projection of the first belt layer (10) on the predetermined plane has a first end point (11) which is farthest from the first center line (1), and the projection of the second belt layer (20) on the predetermined plane has a first end point (11) which is farthest from the first center line (1). The projection of the third belt layer (30) on the predetermined plane has a third endpoint (13) farthest from the first center line (1), and the projection of the fourth belt layer (40) on the predetermined plane has a fourth endpoint (14) farthest from the first center line (1); wherein the second endpoint (12) is the point of the projection of the belt layer structure farthest from the first center line (1), and the second endpoint (12) is located on the side of the shoulder line (4) away from the first center line (1).

4. The tire according to claim 3, characterized in that Along the extension direction of the first center line (1), the projection of the second belt layer (20) on the predetermined plane has a third boundary line and a fourth boundary line (5) arranged relatively to each other, the fourth boundary line (5) being arranged away from the tread relative to the third boundary line, and the intersection of the shoulder line (4) and the fourth boundary line (5) being the second boundary point; the distance between the second endpoint (12) and the second boundary point along the axial direction of the tire is e, and the value range of e is: 10mm≤e≤20mm.

5. The tire according to claim 4, characterized in that A distance e between the second end point (12) and the second boundary point along the axial direction of the tire is equal to 15 mm.

6. The tire according to claim 3, characterized in that Along the axial direction of the tire, the distance between the first boundary point (2) and the first center line (1) is a, and the distance between the second end point (12) and the first center line (1) is d; wherein d=(0.85±0.02)*a.

7. The tire according to claim 3, characterized in that Along the axial direction of the tire, the distance between the second endpoint (12) and the first center line (1), the distance between the third endpoint (13) and the first center line (1), the distance between the first endpoint (11) and the first center line (1), and the distance between the fourth endpoint (14) and the first center line (1) gradually decrease.

8. The tire according to claim 3, wherein: Along the axial direction of the tire, the distance between the first endpoint (11) and the second endpoint (12) is t1, the distance between the second endpoint (12) and the third endpoint (13) is t2, and the distance between the third endpoint (13) and the fourth endpoint (14) is t3; wherein, 10mm≤t1≤15mm, 10mm≤t2≤15mm, and 10mm≤t3≤15mm.

9. The tire according to claim 8, characterized in that t1 is equal to 12mm, t2 is equal to 12mm, and t3 is equal to 12mm.

10. The tire according to claim 4, characterized in that The projection of the tire tread on the predetermined plane is a fifth projection line (7), and the fourth boundary line (5) is arranged parallel to the fifth projection line (7).

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