All-steel radial tire with good sealing

Abstract

This utility model relates to the field of tire technology and discloses a high-sealing all-steel radial tire, including a bead and a rim. The bead is mounted on the surface of the rim. An annular seal is provided at the angle between the bead and the rim, and the annular seal has a cavity inside. After the tire is inflated, the annular seal is compressed to a taut state. The serrations of the annular seal fit tightly against the rim, forming a first seal. The elastic support column is inclined at 45° and can undergo axial deformation under compression to compensate for rim dimensional tolerances, ensuring uniform contact of the sealing surface. Simultaneously, the reverse elastic force of the elastic support column provides additional clamping force under bumpy conditions, forming a second seal. The annular seal is connected to the bead by a flexible connecting rib to absorb bead deformation and prevent the sealing interface from peeling off, thus forming a third seal. This triple sealing improves the overall sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, specifically to an all-steel radial tire with good sealing performance. Background Technology

[0002] All-steel radial tires are a type of high-performance tire. Both the carcass and belt layers use steel cords as the skeleton material, which distinguishes them from semi-steel radial tires (which use fiber materials for the carcass) and bias-ply tires (where the cords are arranged diagonally). This structure arranges the cords radially (in the meridian direction) and perpendicular or nearly perpendicular to the center line of the tire crown, while the belt layer cords cross diagonally at an angle of 15-25 degrees to form a rigid clamping frame.

[0003] In the existing technology, the sealing of all-steel radial tires mainly relies on the interference fit between the tire bead and the rim, the density of the tire carcass rubber, and the barrier effect of the belt layer. However, there are still defects. During long-term use, the gap can easily increase due to rubber aging and minor deformation of the rim, causing gas to slowly leak from the contact surface between the tire bead and the rim, affecting the sealing effect. Utility Model Content

[0004] The purpose of this invention is to provide a fully steel radial tire with good sealing performance to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a well-sealed all-steel radial tire, comprising a bead and a rim, wherein the bead is mounted on the surface of the rim; an annular seal is provided at the angle between the bead and the rim, the annular seal has a cavity inside, and elastic support columns are provided at equal angles inside the cavity, with the elastic support columns inclined at 45°; the end of the annular seal near the rim has serrations, and a flexible connecting rib is provided between the annular seal and the bead.

[0006] Preferably, the annular seal is made of highly elastic rubber, and the cross-section of the annular seal is triangular.

[0007] Preferably, the elastic support column is made of nylon-reinforced rubber, and the elastic support column is used to compensate for the dimensional tolerance of the rim so that the sealing surface is in uniform contact.

[0008] Preferably, the height of the saw teeth is 0.5 mm, and the annular seal is used to enhance the fit between the saw teeth and the rim when it is tightened.

[0009] Preferably, the flexible connecting rib is made of fluororubber and has a thickness of 1mm. The annular seal is connected to the tire bead through the flexible connecting rib to prevent the sealing interface from peeling off.

[0010] Preferably, the inner surface of the tire bead is provided with a vulcanized rubber sealing layer, which is made of polyurethane composite, used to block the penetration of gas molecules and to form an interference fit between the tire bead and the rim edge.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: After the tire is inflated, the annular seal is squeezed to put it in a taut state. The serrations of the annular seal fit tightly with the rim to form the first seal. The elastic support column is set at an inclination of 45°, which can undergo axial deformation when compressed to compensate for the rim size tolerance and make the sealing surface contact evenly. At the same time, the reverse elastic force of the elastic support column provides additional clamping force under bumpy conditions to form the second seal. The annular seal is connected to the tire bead by a flexible connecting rib to absorb the deformation of the tire bead and prevent the sealing interface from peeling off, thereby forming the third seal. The sealing performance is improved through the triple seal. Attached Figure Description

[0012] Figure 1 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0013] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0014] Figure 3 This is a top cross-sectional view of the present invention;

[0015] Figure 4 This is a three-dimensional structural diagram of the present invention.

[0016] In the diagram: 1. Tire bead; 2. Wheel rim; 3. Vulcanized rubber sealing layer; 4. Flexible connecting rib; 5. Annular seal; 6. Cavity; 7. Elastic support column; 8. Serration. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-4 The present invention provides a fully steel radial tire with good sealing performance, including a tire bead 1 and a rim 2, wherein the tire bead 1 is mounted on the surface of the rim 2.

[0019] exist Figures 2-4In the middle, an annular seal 5 is provided at the angle between the tire bead 1 and the rim 2. The annular seal 5 is made of high elastic rubber and has a triangular cross section. The annular seal 5 has a cavity 6 inside. Elastic support columns 7 are provided at equal angles inside the cavity 6. The elastic support columns 7 are inclined at 45°. When compressed, the elastic support columns 7 can undergo axial deformation to compensate for the dimensional tolerance of the rim 2 and make the sealing surface evenly contacted. At the same time, the reverse elastic force of the elastic support columns 7 provides additional clamping force under bumpy conditions to form a second seal.

[0020] Specifically, the elastic support column 7 is made of nylon-reinforced rubber. The diameter of the elastic support column 7 is 3mm. The spacing between multiple elastic support columns 7 is set to 50mm. By setting the elastic support column 7 to be tilted at 45°, the morphological stability of the annular seal 5 is maintained while allowing axial elastic deformation to compensate for the dimensional tolerance of the rim 2. The reverse elastic force generated after the elastic support column 7 is deformed under pressure is used to compensate for the sealing pressure loss under extreme working conditions.

[0021] exist Figure 2 In the middle, the annular seal 5 is provided with a serration 8 at one end near the rim 2. After the tire is inflated, the annular seal 5 is squeezed to make it in a tight state. The serration 8 of the annular seal 5 fits tightly with the rim 2 to form the first seal.

[0022] Specifically, the height of the serration 8 is 0.5mm. By making the serration 8 contact the smooth surface of the rim 2, the tiny scratches can be filled by the elastic deformation of the rubber to block the gas leakage path.

[0023] exist Figures 2-4 In the middle, a flexible connecting rib 4 is provided between the annular seal 5 and the tire bead 1. The flexible connecting rib 4 is made of fluororubber. The annular seal 5 and the tire bead 1 are connected by the flexible connecting rib 4 so as to absorb the deformation of the tire bead 1 and prevent the sealing interface from peeling off, thereby forming a third seal.

[0024] Specifically, the thickness of the flexible connecting rib 4 is 1mm. By providing the flexible connecting rib 4 between the annular seal 5 and the bead 1, it is possible to absorb the deformation of the bead 1, thereby preventing the sealing interface from peeling off.

[0025] exist Figure 1 and Figure 3 In the tire, the inner surface of the bead 1 is provided with a vulcanized rubber sealing layer 3. The vulcanized rubber sealing layer 3 is made of polyurethane composite. After the tire is inflated, the vulcanized rubber sealing layer 3 can expand under air pressure, pushing the bead 1 to form an interference fit with the edge of the rim 2 in order to eliminate the gas leakage path. The vulcanized rubber sealing layer 3 contains self-adhesive material, which can form concentric annular grooves when encountering small punctures, so as to close the puncture. At the same time, it can disperse the road bump stress and improve comfort.

[0026] Specifically, the thickness of the vulcanized rubber sealing layer 3 is 2-3mm. By providing the vulcanized rubber sealing layer 3 on the inner surface of the tire bead 1, after the tire is inflated, the vulcanized rubber sealing layer 3 expands under the action of air pressure, which can push the tire bead 1 and the edge of the rim 2 to form an interference fit, thereby eliminating the gas side leakage path. When encountering a small puncture, it can form concentric annular grooves to close the puncture. In addition, it can also disperse the road bump stress and improve comfort.

[0027] After the tire is inflated, the tire bead 1 compresses the annular seal 5, causing the annular seal 5 to be in a taut state. This allows the serrations 8 of the annular seal 5 to fit tightly against the rim 2, forming the first layer of seal. The elastic support column 7 inside the cavity 6 is set at an inclination of 45°, which can undergo axial deformation when compressed, in order to compensate for the dimensional tolerances of the rim 2 and ensure uniform contact of the sealing surface. At the same time, the reverse elastic force of the elastic support column 7 provides additional clamping force under bumpy conditions, in order to form the second layer of seal. The annular seal 5 and the tire bead 1 are connected by a flexible connecting rib 4, which absorbs the deformation of the tire bead 1 and prevents the sealing interface from peeling off, thus forming the third layer of seal.

[0028] Electrical equipment (including but not limited to motors, electric actuators, etc.) is safely powered by an external power source and controlled through a control box.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A well-sealed all-steel radial tire, comprising a bead (1) and a rim (2), wherein the bead (1) is mounted on the surface of the rim (2); characterized in that: An annular seal (5) is provided at the angle between the tire bead (1) and the rim (2). A cavity (6) is provided inside the annular seal (5). An elastic support column (7) is provided at equal angles inside the cavity (6), and the elastic support column (7) is inclined at 45°. A serration (8) is provided at one end of the annular seal (5) near the rim (2). A flexible connecting rib (4) is provided between the annular seal (5) and the tire bead (1).

2. The all-steel radial tire with good sealing performance according to claim 1, characterized in that: The annular seal (5) is made of highly elastic rubber, and the cross section of the annular seal (5) is triangular.

3. The all-steel radial tire with good sealing performance according to claim 1, characterized in that: The elastic support column (7) is made of nylon-reinforced rubber and is used to compensate for the dimensional tolerance of the rim (2) so that the sealing surface is in uniform contact.

4. The all-steel radial tire with good sealing performance according to claim 2, characterized in that: The height of the saw teeth (8) is 0.5 mm, and the annular seal (5) is used to enhance the fit between the saw teeth (8) and the rim (2) when it is tightened.

5. A well-sealed all-steel radial tire according to claim 4, characterized in that: The flexible connecting rib (4) is made of fluororubber and the thickness of the flexible connecting rib (4) is 1mm. The annular seal (5) is connected to the tire bead (1) through the flexible connecting rib (4) to prevent the sealing interface from peeling off.

6. The all-steel radial tire with good sealing performance according to claim 1, characterized in that: The inner surface of the bead (1) is provided with a vulcanized rubber sealing layer (3), which is made of polyurethane composite to block the penetration of gas molecules and make the bead (1) and the edge of the rim (2) form an interference fit.

Images