Agricultural radial tire bead structure

Abstract

The utility model discloses an agricultural radial tire bead structure, which relates to the technical field of tire preparation and comprises a steel wire ring main body and steel wire ring wrapping cloth, a triangular rubber core is arranged at the top end of the steel wire ring wrapping cloth, and two turn-up tire bodies are arranged on the outer side of the steel wire ring wrapping cloth. One of the turn-up tire bodies is sleeved on the outer walls of the bead wrapping cloth and the apex core, the other turn-up tire body is sleeved on the outer wall of one turn-up tire body, the outer wall of one end of the other turn-up tire body is provided with the lining, one end of the lining is provided with the seam allowance protection rubber, the seam allowance protection rubber is located on the outer side of the other turn-up tire body, and the other turn-up tire body is located on the outer side of the other turn-up tire body. And a tire bead contour is formed on the seam allowance protection rubber. By improving the structure of the tire bead, the tire bead part of the tire can be tightly matched with the rim, air leakage is prevented, meanwhile, the overall durability of the tire bead of the tire is effectively improved, the problems of tire crack, tire empty and the like are reduced, and the service life of the tire under high load is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of tire preparation technology, and specifically relates to an agricultural radial tire bead structure. BACKGROUND

[0002] The agricultural radial tire, also known as a steel wire tire, is an agricultural special-purpose pneumatic tire in which the tire body ply and the tire center line are arranged at an angle of approximately 90°, and the characteristics include strong load-carrying capacity, good wear resistance, excellent shock absorption, and small rolling resistance, and the agricultural radial tire is divided into full-steel wire and half-steel wire types and is widely used in devices such as tractors and harvesters to improve work efficiency, reduce operating costs, and enhance safety, and the tire bead is the part of the tire that is mounted on the rim and is the key area of contact and fixation between the tire and the rim to ensure that the tire is securely mounted on the wheel, thereby enhancing rigidity and ensuring tire performance and lifespan.

[0003] In the use of the existing agricultural radial tire, due to the increasing demand for high-horsepower agricultural machinery and the increasing load of the agricultural machinery, the requirements for tire load are becoming higher and higher, and the bead is the part of the tire that is in contact with the rim and is the stress concentration area of the tire, and the existing tire bead sub-port platform curve is usually designed with a one-segment angle, and the heel arc generally adopts a standard rim heel arc R, and in the actual use, problems such as bulging and cracking of the bead may occur, which reduces the durability of the tire and seriously affects the service life of the tire, and therefore, the present application provides an agricultural radial tire bead structure to eliminate the drawbacks of the existing device. SUMMARY

[0004] The utility model aims at providing an agricultural radial tire bead structure to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] An agricultural radial tire bead structure includes a steel wire bead body for support, the steel wire bead body is a single-wire wound special shape, the outer side of the steel wire bead body is covered with a full-wound steel wire bead cover, the top end of the steel wire bead cover is provided with a triangular rubber core, the outer side of the steel wire bead cover is provided with two reverse-packaged tire bodies, one of the reverse-packaged tire bodies is sleeved on the outer wall of the steel wire bead cover and the triangular rubber core, the other reverse-packaged tire body is sleeved on the outer wall of the one reverse-packaged tire body, one end of the other reverse-packaged tire body is provided with an inner liner, one end of the inner liner is provided with a bead opening protector, the bead opening protector is located on the outer side of the other reverse-packaged tire body, and a bead contour is formed on the bead opening protector.

[0007] The bead contour includes:

[0008] The bead sub-mouth platform curve is a double-angle two-section structure, and the heel multi-segment arc is a multi-segment arc structure.

[0009] The bead sub-mouth platform curve is a double-angle two-section structure, and the heel multi-segment arc is a multi-segment arc structure.

[0010] On the basis of the above technical scheme, the utility model further provides the following optional technical schemes.

[0011] In an optional scheme, the bead sub-mouth platform curve comprises:

[0012] The curve d, the curve e, the angle alpha and the angle beta;

[0013] The angle alpha corresponds to the horizontal projection length of the curve, the angle beta corresponds to the horizontal projection length of the curve, the angle of the angle alpha is 6-10 DEG, the angle of the angle beta is 18-23 DEG, and the value of n is 1 / 4-1 / 6 of the length of m.

[0014] In an optional scheme, the heel multi-segment arc comprises:

[0015] The heel arc Rx, the heel arc L and the heel arc Ry;

[0016] The straight line L is located between the heel arc Rx and the heel arc Ry, the heel arc Rx is tangent to the bead arc c and the straight line L, the heel arc Ry is tangent to the sub-mouth platform curve d and the straight line L, the straight line L and the auxiliary straight line P are perpendicular to each other, the auxiliary straight line P is the extension line of the intersection straight line of the heel arc Rx and the heel arc Ry, the radius of the heel arc Rx is 6-9 mm, and the values of the heel arc Rx and the heel arc Ry are equal.

[0017] In an optional scheme, one end of the bead arc Rz is tangent to the bead arc c, the other end of the bead arc Rz is connected with the sidewall, and the radius of the bead arc Rz is 16-20 mm.

[0018] In an optional scheme, the bead fitting diameter ΦD1 = the rim diameter ΦD-3-5 mm.

[0019] In an optional scheme, the steel wire ring main body inner diameter ΦD2 = the rim diameter ΦD + the wrapping thickness B1 + the reinforcing layer B2 + the tire body thickness T + (3-5) mm.

[0020] In an optional scheme, one end of the bead sub-mouth platform curve is provided with a sidewall, the inner wall of the bead sub-mouth platform curve is provided with a sub-mouth wrapping, the inner wall of the sub-mouth wrapping is provided with a bead reinforcing layer, the inner wall of the bead reinforcing layer is provided with a positive wrapping tire body, and the positive wrapping tire body is sleeved on the outer wall of another reverse wrapping tire body.

[0021] Compared with the prior art, the utility model has the advantages that:

[0022] The utility model discloses an improved bead structure, which can make the tire bead part closely cooperate with the rim, prevent air leakage, effectively improve the overall durability of the tire bead, reduce problems such as bead cracking and bead emptying, and prolong the service life of the tire under high load. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is a schematic diagram of a simple structure of a 5° deep groove rim.

[0024] Fig. 2 It is a schematic diagram of a conventional agricultural tubeless tire bead structure.

[0025] Fig. 3 It is a schematic diagram of a tubeless tire bead structure of the utility model.

[0026] Marked notes: 1, inner liner;2, reverse package tire body;3, steel wire bead main body;4, steel wire bead cloth;5, triangular rubber core;6, positive package tire body;7, bead reinforcement layer;8, bead ring cloth;9, bead ring rubber;10, tire side. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model is further described in detail below with reference to the drawings and examples.

[0028] In one embodiment, as shown in Figs. 1-3 Agricultural radial tire bead structure, including for supporting steel wire bead main body 3, steel wire bead main body 3 is single wire winding heteromorphy, steel wire bead main body 3 outside is covered with full winding steel wire bead cloth 4, the top of steel wire bead cloth 4 is provided with triangular rubber core 5, the outside of steel wire bead cloth 4 is provided with two reverse package tire bodies 2, one reverse package tire body 2 is sleeved on the outer wall of steel wire bead cloth 4, triangular rubber core 5, another reverse package tire body 2 is sleeved on the outer wall of one reverse package tire body 2, one end of the outer wall of another reverse package tire body 2 is provided with inner liner 1, one end of inner liner 1 is provided with bead ring rubber 9, bead ring rubber 9 is located on the outside of another reverse package tire body 2, the end of bead ring rubber 9 away from inner liner 1 is provided with tire side 10, the inner wall of bead ring rubber 9 is provided with bead ring cloth 8, the inner wall of bead ring cloth 8 is provided with bead reinforcement layer 7, the inner wall of bead reinforcement layer 7 is provided with positive package tire body 6, positive package tire body 6 is sleeved on the outer wall of another reverse package tire body 2, and bead ring contour is formed on bead ring rubber 9;

[0029] Bead contour includes: bead bead ring platform curve, heel multi-segment arc, bead arc Rz, bead arc c, straight line L, bead ring platform curve d and auxiliary straight line P;

[0030] The bead sub-port platform curve is a double-angle two-section structure, and the heel multi-segment arc is a multi-segment arc structure.

[0031] In the embodiment, by improving the bead structure, the tire bead part can be closely matched with the rim to prevent air leakage, effectively improve the overall durability of the tire bead, reduce problems such as bead cracking and bead emptying, and prolong the service life of the tire under high load.

[0032] In one embodiment, as shown in Fig. 3 The bead sub-port platform curve includes curve d, curve e, angle α, and angle β.

[0033] The horizontal projection length of angle α is m, the horizontal projection length of angle β is n, the angle of angle α is 6°-10°, the angle of angle β is 18°-23°, and n is 1 / 4-1 / 6 of the length of m.

[0034] In one embodiment, as shown in Fig. 3 The heel multi-segment arc includes heel arc Rx, heel arc L, and heel arc Ry.

[0035] The straight line L is located between the heel arc Rx and the heel arc Ry, the heel arc Rx is tangent to the bead arc c and the straight line L, the heel arc Ry is tangent to the sub-port platform curve d and the straight line L, the straight line L is perpendicular to the auxiliary straight line P, the auxiliary straight line P is an extension line of the intersection straight line of the heel arc Rx and the heel arc Ry, the radius of the heel arc Rx is 6-9 mm, and the values of the heel arc Rx and the heel arc Ry are equal.

[0036] In one embodiment, as shown in Fig. 3 One end of the bead arc Rz is tangent to the bead arc c, the other end of the bead arc Rz is connected to the sidewall 10, and the radius of the bead arc Rz is 16-20 mm.

[0037] In one embodiment, as shown in Figs. 1-3 The bead diameter ΦD1=the rim diameter ΦD-3-5 mm.

[0038] In one embodiment, as shown in Figs. 1-3 The inner diameter ΦD2 of the steel wire bead body 3=the rim diameter ΦD+the wrapping thickness B1+the reinforcing layer B2+the tire body thickness T+(3-5) mm.

[0039] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An agricultural radial tire bead structure characterized by, The application relates to a tire bead structure, which comprises a steel ring body (3) for support, the steel ring body (3) is a single-wire winding special-shaped body, the outer side of the steel ring body (3) is covered with a full-winding steel ring cover (4), the top end of the steel ring cover (4) is provided with a triangular rubber core (5), the outer side of the steel ring cover (4) is provided with two reverse covering bodies (2), one of the reverse covering bodies (2) is sleeved on the outer wall of the steel ring cover (4) and the triangular rubber core (5), the other reverse covering body (2) is sleeved on the outer wall of the one reverse covering body (2), one end of the other reverse covering body (2) is provided with an inner liner (1), one end of the inner liner (1) is provided with a bead edge protector (9), the bead edge protector (9) is located on the outer side of the other reverse covering body (2), and the bead edge protector (9) is formed with a bead contour. The bead contour comprises a bead edge platform curve, a multi-segment arc of a tire butt, a bead arc Rz, a bead arc c, a straight line L, a bead edge platform curve d and an auxiliary straight line P. The bead edge platform curve is a two-segment structure with double angles, and the multi-segment arc of the tire butt is a multi-segment arc structure.

2. An agricultural radial tire bead structure as in claim 1 wherein, The bead edge platform curve comprises a curve d, a curve e, an angle alpha and an angle beta. The horizontal projection length of the angle alpha corresponding to the curve is m, the horizontal projection length of the angle beta corresponding to the curve is n, the angle of the angle alpha is 6-10 DEG, the angle of the angle beta is 18-23 DEG, and the value of n is 1 / 4-1 / 6 of the length of m.

3. An agricultural radial tire bead structure as in claim 1 wherein, The multi-segment arc of the tire butt comprises a tire butt arc Rx, a tire butt arc L and a tire butt arc Ry. The straight line L is located between the tire butt arc Rx and the tire butt arc Ry, the tire butt arc Rx is tangent to the bead arc c and the straight line L, the tire butt arc Ry is tangent to the bead edge platform curve d and the straight line L, the straight line L and the auxiliary straight line P are perpendicular to each other, the auxiliary straight line P is an extension line of the intersection straight line of the tire butt arc Rx and the tire butt arc Ry, the radius of the tire butt arc Rx is 6-9 mm, and the values of the tire butt arc Rx and the tire butt arc Ry are equal.

4. The agricultural radial tire bead structure of Claim 1 wherein, One end of the bead arc Rz is tangent to the bead arc c, the other end of the bead arc Rz is connected with a tire side (10), and the radius of the bead arc Rz is 16-20 mm.

5. The agricultural radial tire bead structure of claim 1 wherein, The tire bead diameter Phi D1 is equal to the rim diameter Phi D minus 3-5 mm.

6. The agricultural radial tire bead structure of Claim 1 wherein, The inner diameter Phi D2 of the steel ring body (3) is equal to the rim diameter Phi D plus the cover thickness B1 plus the reinforcing layer B2 plus the tire body thickness T plus (3-5) mm.

7. A bead structure for agricultural radial tire according to claim 1, wherein One end of the bead edge protector (9) away from the inner liner (1) is provided with a tire side (10), the inner wall of the bead edge protector (9) is provided with a bead edge cover (8), the inner wall of the bead edge cover (8) is provided with a bead reinforcing layer (7), the inner wall of the bead reinforcing layer (7) is provided with a positive covering body (6), and the positive covering body (6) is sleeved on the outer wall of the other reverse covering body (2).

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