Tire with improved shoulder durability and prevention of groove bottom cracking

Abstract

The utility model discloses a kind of tires for improving shoulder durability and preventing ditch bottom cracking, including tread rubber, the lower end of the tread rubber is bonded with base rubber, the lower end of the base rubber is bonded with shoulder pad rubber, the lower end of the shoulder pad rubber is bonded with inner liner rubber, the lower end of the tread rubber is bonded with third belt layer, the lower end of the third belt layer is bonded with second belt layer, the lower end of the second belt layer is bonded with first belt layer, the lower end of the first belt layer is bonded with carcass, belt layer rubber is jointly bonded between the second belt layer and first belt layer, the lower end of the inner liner rubber is contacted with pressing plate, the inside of the tread rubber is slidably connected with insertion tube. The utility model relates to a kind of tires for improving shoulder durability and preventing ditch bottom cracking, with the characteristics of good durability, preventing ditch bottom cracking and stable connection between layers of tire.

Description

Technical Field

[0001] This utility model belongs to the field of tire technology, specifically a tire that improves shoulder durability and prevents groove bottom cracking. Background Technology

[0002] Utility model patent CN214396280U discloses a tire with improved crown durability, including a tread pattern. The tread pattern includes longitudinal grooves extending circumferentially and transverse grooves extending axially, dividing the tread into tread blocks. The tread blocks include shoulder tread blocks located on the tire shoulder, and the transverse grooves include shoulder transverse grooves located on the shoulder. The sum of the areas of the shoulder transverse grooves (S1) and the sum of the areas of the shoulder tread blocks (S2) have the following relationship: 0.22 < S1 / S2 < 0.32. By optimizing the area and groove depth relationships of the shoulder tread, the heat dissipation performance of the tire tread is enhanced, thus improving the tire tread durability. By optimizing the width relationship between the first belt layer and the tread, and increasing the belt layer edge rubber, the shear strain and strain energy density at the belt layer endpoints are reduced. By controlling the thickness of the airtight layer around the tread endpoints, tire failure caused by airtight layer aging is mitigated. However, this tire has some shortcomings in use: the tire shoulder has poor durability and the groove bottom is prone to cracking. Additionally, the connection between the tire layers is not stable enough and is prone to loosening. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a tire that improves shoulder durability and prevents groove bottom cracking in order to solve the above-mentioned problems, thus solving the problems mentioned in the background art.

[0004] To address the above problems, this utility model provides a technical solution:

[0005] A tire for improving shoulder durability and preventing groove cracking includes a tread compound, a base compound bonded to the lower end of the tread compound, a shoulder pad compound bonded to the lower end of the base compound, an inner liner compound bonded to the lower end of the shoulder pad compound, a third belt layer bonded to the lower end of the tread compound, a second belt layer bonded to the lower end of the third belt layer, a first belt layer bonded to the lower end of the second belt layer, a tire carcass bonded to the lower end of the first belt layer, a belt layer interlayer bonded between the second belt layer and the first belt layer, a pressure plate contacting the lower end of the inner liner compound, a tube slidably connected inside the tread compound, the tube penetrating the third belt layer, the second belt layer, the first belt layer, the tire carcass, and the pressure plate, a fixing mechanism provided on the tube, a pressure ring threadedly connected to the outer side of the tube, and a washer provided on the outer side of the tube.

[0006] Preferably, the surfaces of the tread rubber, base rubber, and shoulder pad rubber are all bonded with sidewall rubber. The sidewall rubber protects the cords from mechanical damage and environmental corrosion.

[0007] Preferably, a zero-degree belt layer is bonded together between the second belt layer and the tread compound. By incorporating the zero-degree belt layer, the tire's shock absorption is increased and its structural stability is enhanced.

[0008] Preferably, the washer contacts the pressure ring and the pressure plate. The washer increases the connection stability between the pressure ring and the pressure plate.

[0009] Preferably, the fixing mechanism includes a wedge block, with the wedge block slidably connected inside the insert cylinder. A screw is mounted inside the insert cylinder via a bearing, and a threaded tube is threadedly connected to the outside of the screw. A top block is fixedly connected to the end of the threaded tube, and the top block and the wedge block are slidably connected. A connecting block is fixedly connected to the surface of the wedge block, and the connecting block is slidably connected to the insert cylinder. A guide rod is fixedly connected inside the insert cylinder, and the guide rod is slidably connected to the wedge block. A spring is provided on the outside of the guide rod. By rotating the screw and threaded tube to perform threaded movement, the top block moves to press against the wedge block, which in turn causes the connecting block to move the insert teeth to press against the tread rubber. Furthermore, by rotating the pressure ring and the insert cylinder to perform threaded movement, the washer presses against the pressure plate, making the connection between the layers of the device more stable.

[0010] Preferably, a slide rod is fixedly connected to the surface of the solenoid, and the slide rod and the insert are slidably connected. The slide rod guides the movement of the solenoid.

[0011] Preferably, the surface of the connecting block is fixedly connected with insert teeth, which contact the tread rubber. By providing insert teeth, the connection stability between the insert and the tread rubber is increased.

[0012] Preferably, one end of the spring is fixedly connected to the wedge block, and the other end of the spring is fixedly connected to the insert. By providing the spring, the wedge block can be easily reset.

[0013] The beneficial effects of this utility model are as follows: This utility model relates to a tire that improves shoulder durability and prevents groove bottom cracking. It features good durability, prevention of groove bottom cracking, and stable connection between tire layers. In practical use, compared with traditional tires that improve shoulder durability and prevent groove bottom cracking, this tire has the following beneficial effects:

[0014] First, without altering the existing design's inner and outer contours, and while meeting the current product's performance requirements for durability, rolling resistance, stiffness, and comfort, adjusting the ratio of tread rubber to base rubber in the tire crown and shoulder areas achieves a balance between wear resistance and durability, while extending groove fatigue life. This is further validated by collecting actual tire pressure, load, and speed data for groove fatigue life prediction simulation analysis, and then verifying the results through vehicle testing under the same operating conditions. The verification is more convincing, extending groove cracking time while maintaining wear resistance and further improving shoulder durability.

[0015] Secondly, by rotating the screw and the tube to make a threaded movement, the top block moves and squeezes the inclined block, which in turn causes the connecting block to drive the insert teeth to move and squeeze the tread rubber. Furthermore, by rotating the pressure ring and the insert to make a threaded movement, the washer squeezes the pressure plate, making the connection between the layers of the device more stable. Attached Figure Description

[0016] For ease of explanation, this utility model is described in detail below with reference to specific embodiments and accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 For the present utility model Figure 1 A schematic diagram of the insert;

[0019] Figure 3 For the present utility model Figure 2 A cross-sectional view of the insert in the middle;

[0020] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the image;

[0021] Figure 5 For the present utility model Figure 3 A schematic diagram of the inclined block in the diagram;

[0022] Figure 6 For the present utility model Figure 3 A schematic diagram of a local structure.

[0023] In the diagram: 1. Tread compound; 2. Base compound; 3. Shoulder pad compound; 4. Sidewall compound; 5. Inner liner compound; 6. Third belt layer; 7. Second belt layer; 8. First belt layer; 9. Carcass; 10. Zero-degree belt layer; 11. Belt layer sandwich compound; 12. Insert; 13. Fixing mechanism; 14. Pressure ring; 15. Washer; 16. Pressure plate; 131. Wedge block; 132. Screw; 133. Screw tube; 134. Sliding rod; 135. Top block; 136. Connecting block; 137. Insert tooth; 138. Guide rod; 139. Spring. Detailed implementation method:

[0024] like Figure 1-6 As shown, the specific implementation adopts the following technical solution:

[0025] Example:

[0026] A tire designed to improve shoulder durability and prevent groove cracking includes a tread compound 1. A base compound 2 is bonded to the lower end of the tread compound 1. A shoulder pad compound 3 is bonded to the lower end of the base compound 2. A sidewall compound 4 is bonded to the surfaces of the tread compound 1, base compound 2, and shoulder pad compound 3. The sidewall compound 4 protects the cords from mechanical damage and environmental corrosion. An inner liner compound 5 is bonded to the lower end of the shoulder pad compound 3. A third belt layer 6 is bonded to the lower end of the tread compound 1. A second belt layer 7 is bonded to the lower end of the third belt layer 6. A first belt layer 8 is bonded to the lower end of the second belt layer 7. A tire carcass 9 is bonded to the lower end of the first belt layer 8. A zero-degree belt layer 10 is bonded between the second belt layer 7 and the tread compound 1. By setting a zero-degree belt layer 10, the tire's shock absorption and structural stability are increased. A belt layer interlayer 11 is bonded together between the second belt layer 7 and the first belt layer 8. The lower end of the inner liner layer 5 contacts a pressure plate 16. An insert 12 is slidably connected inside the tread layer 1. The insert 12 passes through the third belt layer 6, the second belt layer 7, the first belt layer 8, the tire body 9, and the pressure plate 16. A fixing mechanism 13 is provided on the insert 12. A pressure ring 14 is threadedly connected to the outside of the insert 12. A washer 15 is provided on the outside of the insert 12. The washer 15 contacts the pressure ring 14 and the pressure plate 16. By setting the washer 15, the connection stability between the pressure ring 14 and the pressure plate 16 is increased.

[0027] The fixing mechanism 13 includes a wedge block 131. The wedge block 131 is slidably connected inside the insert 12. A screw 132 is mounted inside the insert 12 via a bearing. A threaded tube 133 is threadedly connected to the outside of the screw 132. A sliding rod 134 is fixedly connected to the surface of the threaded tube 133. The sliding rod 134 is slidably connected to the insert 12. The sliding rod 134 guides the movement of the threaded tube 133. A top block 135 is fixedly connected to the end of the threaded tube 133. The top block 135 is slidably connected to the wedge block 131. A connecting block 136 is fixedly connected to the surface of the wedge block 131. The connecting block 136 is slidably connected to the insert 12. A tooth 137 is fixedly connected to the surface of the connecting block 136. The tooth 137 contacts the tread rubber 1. The insertion teeth 137 are placed to increase the connection stability between the insertion cylinder 12 and the tread rubber 1. A guide rod 138 is fixedly connected inside the insertion cylinder 12. The guide rod 138 is slidably connected to the inclined block 131. A spring 139 is provided on the outside of the guide rod 138. One end of the spring 139 is fixedly connected to the inclined block 131, and the other end of the spring 139 is fixedly connected to the insertion cylinder 12. By setting the spring 139, the inclined block 131 can be easily reset. By rotating the screw 132 and the screw tube 133 to make threaded movement, the top block 135 moves to squeeze the inclined block 131, which in turn causes the connecting block 136 to drive the insertion teeth 137 to move and squeeze the tread rubber 1. Furthermore, by rotating the pressure ring 14 and the insertion cylinder 12 to make threaded movement, the washer 15 squeezes the pressure plate 16, making the connection between the layers of the device more stable.

[0028] The usage state of this utility model is as follows: When in use, the insert 12 is inserted through the tire. The screw 132 is manually rotated, causing a threaded movement between the screw 132 and the screw tube 133. This causes the top block 135 to press against the inclined block 131, which in turn causes the inclined block 131 to move the connecting block 136. The connecting block 136 then causes the insert teeth 137 to extend from the insert 12, thus pressing the insert teeth 137 against the tread rubber 1. Then, the pressure ring 14 is rotated, causing a threaded movement between the pressure ring 14 and the insert 12. This movement causes the pressure ring 14 to move, pressing against the washer 15. The washer 15 then presses against the pressure plate 16, pressing the pressure plate 16 onto the tire body 9. By rotating the screw 132 and the screw tube 133, the top block 135 moves, pressing against the inclined block 131, thus connecting... Block 136 drives the tooth 137 to move and squeeze the tread rubber 1, and by rotating the pressure ring 14 and the insert 12 to make threaded movement, the washer 15 squeezes the pressure plate 16, making the connection between the layers of the device more stable. Without changing the inner and outer contours of the existing design, while meeting the current product's performance in terms of durability, rolling resistance, stiffness, and comfort, the ratio of tread rubber 1 to base rubber 2 in the tire crown and shoulder areas can be adjusted to achieve the goal of extending the fatigue life of the groove bottom while taking into account wear and durability performance. By collecting the actual tire pressure, load, and speed, the groove bottom fatigue life prediction simulation analysis is carried out, and the results are verified by the whole vehicle test results under the same operating conditions. The verification effect is more convincing. While extending the time of groove bottom cracking, wear performance is also taken into account, and the tire shoulder durability performance is further improved.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A tire for improving shoulder durability and preventing groove bottom cracking, comprising a tread compound (1), characterized in that: The lower end of the tread compound (1) is bonded to a base compound (2), the lower end of the base compound (2) is bonded to a shoulder pad compound (3), the lower end of the shoulder pad compound (3) is bonded to an inner liner compound (5), the lower end of the tread compound (1) is bonded to a third belt layer (6), the lower end of the third belt layer (6) is bonded to a second belt layer (7), the lower end of the second belt layer (7) is bonded to a first belt layer (8), the lower end of the first belt layer (8) is bonded to a carcass (9), and the second belt layer (7) and the first belt layer (8) are bonded to each other. The inner liner (5) is bonded together with a belt layer (11). The lower end of the inner liner (5) contacts a pressure plate (16). The tread rubber (1) is slidably connected to a tube (12). The tube (12) passes through the third belt layer (6), the second belt layer (7), the first belt layer (8), the tire body (9), and the pressure plate (16). A fixing mechanism (13) is provided on the tube (12). A pressure ring (14) is threadedly connected to the outside of the tube (12). A washer (15) is provided on the outside of the tube (12).

2. The tire according to claim 1, characterized in that: The tread rubber (1), base rubber (2) and shoulder pad rubber (3) are all bonded together with sidewall rubber (4).

3. The tire according to claim 1, characterized in that: The second belt layer (7) and the tread rubber (1) are bonded together with a zero-degree belt layer (10).

4. The tire according to claim 1, characterized in that: The washer (15) is in contact with the pressure ring (14), and the washer (15) is in contact with the pressure plate (16).

5. A tire according to claim 1 that improves shoulder durability and prevents groove bottom cracking, characterized in that: The fixing mechanism (13) includes a wedge (131), the wedge (131) is slidably connected inside the insert (12), a screw (132) is installed inside the insert (12) via a bearing, a screw tube (133) is threadedly connected to the outside of the screw (132), a top block (135) is fixedly connected to the end of the screw tube (133), the top block (135) and the wedge (131) are slidably connected, a connecting block (136) is fixedly connected to the surface of the wedge (131), the connecting block (136) and the insert (12) are slidably connected, a guide rod (138) is fixedly connected inside the insert (12), the guide rod (138) and the wedge (131) are slidably connected, and a spring (139) is provided on the outside of the guide rod (138).

6. A tire according to claim 5 that improves shoulder durability and prevents groove bottom cracking, characterized in that: A slide rod (134) is fixedly connected to the surface of the solenoid (133), and the slide rod (134) and the insert (12) are slidably connected.

7. A tire according to claim 5 that improves shoulder durability and prevents groove bottom cracking, characterized in that: The surface of the connecting block (136) is fixedly connected with a tooth (137), and the tooth (137) is in contact with the tread rubber (1).

8. A tire according to claim 5 that improves shoulder durability and prevents groove bottom cracking, characterized in that: One end of the spring (139) is fixedly connected to the inclined block (131), and the other end of the spring (139) is fixedly connected to the insert (12).

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