Half-high flower high traction type water and land dual-purpose agricultural tire

Abstract

This utility model discloses a semi-high traction, amphibious agricultural tire, comprising: a tire body; and tread blocks arranged in a herringbone pattern on the outer surface of the tire body. Each tread block is composed of a first tread edge, a second tread edge, a third tread edge, a fourth tread edge, a fifth tread edge, a sixth tread edge, a seventh tread edge, and an eighth tread edge connected end-to-end. The angle between the first and second tread edges is 90° + a1, where a1 = 38° - 40°; the angle between the second and third tread edges is 90° - a2, where a2 = a1 - 5°; and rounded transitions are used between the first and eighth tread edges, between the second and third tread edges, and between the third and fourth tread edges. The fourth and eighth tread edges are also rounded. This utility model effectively prevents tire slippage, reduces the probability of wasted effort, ensures the traction of agricultural machinery, thereby improving operating efficiency and reducing operating costs.

Description

Technical Field

[0001] This utility model relates to a semi-high-flower, high-traction type agricultural tire suitable for both amphibious and dryland use, belonging to the field of tire design and manufacturing technology. Background Technology

[0002] Agricultural tires are typically designed with the environmental requirements of agricultural machinery operation in mind. For example, the R-1, as the most commonly used agricultural tire, performs well on most types of land, adapting well to dryland scenarios such as cornfields, soybean fields, and wheat fields. It provides excellent traction and self-cleaning properties, and can work reliably on uneven terrain. However, due to its shallow tread and high ground pressure, it is prone to slipping and sinking when operating in paddy fields, which can also compact the soil, damage the plow pan, and thus affect rice root development, while increasing fuel consumption of agricultural machinery. While the PR-1 tire is suitable for paddy field operations, it has significant limitations: it experiences greater vibration and faster wear when driving on dry land, reducing its lifespan by 40%; and when moving on roads, the speed must be limited to below 15 km / h.

[0003] Modern agricultural machinery often needs to operate across multiple scenarios. For example, harvesters may need to move from dryland rice fields to paddy fields, or in a two- or three-crop-a-year planting system, the same plot of land may switch between dryland and paddy field conditions in a short period (such as rice-wheat rotation). In such cases, if agricultural machinery is equipped with separate dryland and paddy field tires, not only will frequent tire changes be required, but operational efficiency will also be affected. Therefore, designing dual-purpose agricultural tires for both dryland and paddy fields is particularly necessary. These tires allow agricultural machinery to operate seamlessly in various scenarios such as paddy fields, dryland, and roads without the need for tire changes. Summary of the Invention

[0004] To address the problems existing in the prior art, this utility model provides a semi-high-flowering, high-traction agricultural tire suitable for both paddy fields and dry land, which can adapt to alternating working environments in paddy fields and dry land.

[0005] To achieve the above objectives, this utility model employs a semi-high-flower, high-traction type dual-purpose agricultural tire for both irrigated and dry land use, comprising:

[0006] Tire body;

[0007] The tread blocks are arranged in a herringbone pattern, staggered left and right on the outer surface of the tire body. Each tread block is composed of a first tread edge, a second tread edge, a third tread edge, a fourth tread edge, a fifth tread edge, a sixth tread edge, a seventh tread edge, and an eighth tread edge connected end to end in sequence. The angle between the first tread edge and the second tread edge is 90° + a1, where a1 = 38° - 40°. The angle between the second tread edge and the third tread edge is 90° - a2, where a2 = a1 - 5°. The transitions between the first tread edge and the eighth tread edge, between the second tread edge and the third tread edge, and between the third tread edge and the fourth tread edge are all rounded. The fourth tread edge and the eighth tread edge are both rounded.

[0008] As an improvement, the ratio of the running surface width to the cross-sectional width of the tire body is 0.90-0.93.

[0009] As an improvement, the ratio of the running surface curvature height to the cross-sectional height of the tire body is 0.092-0.094.

[0010] As an improvement, the width of the tread block is La = Lb = Lc = 1 / 3 of the width of the tread running surface, and Ld = Lb - (6-8mm).

[0011] As an improvement, the radius of the arc of the eighth patterned edge is Ra = 240mm-280mm, the radius of the arc of the fourth patterned edge is Rb = Ra + 5mm, the radius of the arc between the first and eighth patterned edges is Rc = 12mm-20mm, the radius of the arc between the third and fourth patterned edges is Rd = Rc - 2mm, and the radius of the arc between the second and third patterned edges is Re = 5-10mm.

[0012] As an improvement, the area of ​​the tread block / the area of ​​the driving surface is 18%-19%.

[0013] As an improvement, the tread depth of the tread block is 1.8-2.2 times that of the tread depth of an R-1 tire of the same specification, or 75-80% of the tread depth of a PR-1 tire of the same specification.

[0014] As an improvement, the patterned block is provided with reinforcing ribs, the thickness of which is 8%-9% of the pattern depth and the width is 40-50mm.

[0015] As an improvement, the reinforcing rib is trapezoidal with transition arcs at both ends, and the radius of the transition arcs is 20-30mm.

[0016] As an improvement, the number of grounding pairs of the patterned block is 2.3-2.5 pairs.

[0017] Compared with existing technologies, the semi-high traction type agricultural tire for both dry and water use of this utility model has a herringbone pattern with staggered left and right sides. It combines the traction advantages of herringbone patterns for dry land and the anti-sinking characteristics of herringbone patterns for paddy fields. When working in dry land, the herringbone pattern can enhance the grip with the soil and improve traction. When working in paddy fields, the staggered gaps in the pattern can drain water quickly and reduce the risk of slippage, solving the problems of slippage of traditional R-1 tires in paddy fields and rapid wear of PR-1 tires in dry land. Meanwhile, the angle between the first and second tread edges is 90°+a1 (a1 = 38°-40°). The larger angle of the front tread reduces the direct impact of soil and crop roots on the tread blocks during operation, improving puncture resistance. The angle between the second and third tread edges is 90°-a2 (a2 = a1-5°). The smaller angle of the rear tread enhances the structural strength of the tread block root, reduces root cracking (cracking at the connection between the tread block and the tire body) caused by repeated deformation, and extends service life. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural development diagram of the present invention;

[0020] Figure 2 This is a front view of the structure of this utility model. Figure 1 (AA view);

[0021] Figure 3 This is a schematic diagram of the structure of the patterned block of this utility model;

[0022] In the diagram: 1. Tire body, 2. Tread block, 21. First tread edge, 22. Second tread edge, 23. Third tread edge, 24. Fourth tread edge, 25. Fifth tread edge, 26. Sixth tread edge, 27. Seventh tread edge, 28. Eighth tread edge, 3. Reinforcing rib, 31. Reinforcing rib transition arc. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this application will be described in detail below through specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, a semi-high traction, amphibious agricultural tire includes a tire body 1 and tread blocks 2. Multiple tread blocks 2 are arranged in a herringbone pattern, staggered left and right on the outer surface of the tire body 1. The inclination direction of the tread forms an angle with the tire's rolling direction. Whether moving forward or backward (agricultural machinery often requires reciprocating motion), the tread blocks can generate longitudinal traction by "cutting" into the soil, reducing slippage. Furthermore, the staggered left-right arrangement avoids the "periodic pressure concentration" caused by neatly arranged tread blocks, resulting in a more even pressure distribution when the tire touches the ground, reducing the risk of getting stuck in soft paddy fields or dry land. Moreover, the staggered gaps form "drainage channels," quickly draining accumulated water and mud between the treads during paddy field operations, preventing water film or silt from obstructing contact between the tread and the ground, and maintaining effective grip.

[0025] Each patterned block 2 is composed of a first patterned edge 21, a second patterned edge 22, a third patterned edge 23, a fourth patterned edge 24, a fifth patterned edge 25, a sixth patterned edge 26, a seventh patterned edge 27, and an eighth patterned edge 28 connected end to end in sequence. The multi-fold contour formed by the eight patterned edges can form a more three-dimensional "interlocking structure" compared to simple geometric shapes (such as rectangles and trapezoids). It can "embed" into the soil in multiple directions in soils of different hardness (from muddy paddy fields to firm dry land), enhancing grip. In addition, the multi-sided structure can distribute stress through the folds, avoiding the patterned block from breaking due to force in one direction. At the same time, it leaves room for slight deformation of the patterned block 2 during rolling, improving durability.

[0026] The angle between the first tread edge 21 and the second tread edge 22 is 90° + a1, where a1 = 38° - 40° (i.e., the angle between the first and second tread edges is 128° - 130°). This angle causes the first and second tread edges to form an outwardly inclined "acute edge." When the tire rolls, this edge can more efficiently "cut into" the soil (especially in dry or semi-dry, hard fields). The reaction force of the soil on the tread edge provides stronger longitudinal tension, which is suitable for the heavy load requirements of agricultural machinery (such as tractors) pulling implements. In paddy fields, this inclined edge can act as a "drainage slope," pushing the water or mud accumulated between the treads towards the tire sidewall along the inclined direction, reducing the accumulation in the tread grooves and maintaining grip. Force stability; the angle between the second tread edge 22 and the third tread edge 23 is 90°-a2, a2=a1-5° (that is, the angle between the second and third tread edges is 55°-57°). The smaller angle makes the second and third tread edges form an inward contraction "bent angle". When the tire turns or tilts (such as turning in the field or working on a slope), this bend angle can form a lateral "bite" with the soil, resisting lateral forces and reducing the risk of sideslip. In addition, by cooperating with the large angle between the first and second tread edges, a "outward expansion-inward contraction" stepped profile is formed, so that the tread block 2 can provide longitudinal tension through the outward expansion edge and enhance the "locking" effect with the soil through the inward contraction edge when rolling, thus avoiding slippage.

[0027] The first tread edge 21 and the eighth tread edge 28, the second tread edge 22 and the third tread edge 23, and the third tread edge 23 and the fourth tread edge 24 all use rounded transitions. The fourth tread edge 24 and the eighth tread edge 28 also use rounded transitions. The use of "rounded transitions" in multiple places means that when the tread block 2 is repeatedly rolled (especially on hard ground), if the fold line connection is a right angle, it is easy to crack due to stress concentration. The rounded transition can disperse the stress to the arc area, avoid premature damage to the tread block, extend the tire life, and make the corners of the tread groove smoother. Mud or water is less likely to "stagnate" due to right angles when passing through, reducing the risk of tread block blockage and maintaining continuous grip in both wet and dry environments. When operating on dry land, the rounded transition can reduce the "sharp edge cutting" of the soil by the tread edge, reduce excessive damage to the surface of the cultivated land, and protect the soil structure. In addition, the fourth tread edge 24 and the eighth tread edge 28, as the edges of the tread block 2 that contact the ground, are designed as rounded edges. Compared with straight edges, rounded edges can reduce the impact of "hard contact" (especially when working on hard ground), reduce the wear rate of the tread edges, and extend service life. In paddy fields or wet ground, the curved surface structure of the rounded edges can more efficiently "break" the water film between the tire and the ground, allowing the tread block to make direct contact with the soil and avoid slippage. When the tire turns, the rounded edges can reduce "stuck" with the soil through the curved transition, making the turning smoother and reducing the operating resistance of agricultural machinery.

[0028] In some embodiments, such as Figure 1 , Figure 2As shown, the ratio (b / B) of the running surface width b to the cross-sectional width B of the tire body 1 is 0.90-0.93, which increases the contact area of ​​the tire tread blocks and improves the tire's traction performance.

[0029] In some embodiments, such as Figure 1 , Figure 2 As shown, the ratio (h / H) of the running surface curvature height h to the cross section height H of the tire body 1 is 0.092-0.094. This reasonably controls the thickness of the tire shoulder and avoids problems such as excessive heat generation on the tire shoulder during dry field or field transfer, which could cause the tire shoulder to come off.

[0030] In some embodiments, such as Figure 1 , Figure 3 As shown, the pattern blocks 2 are arranged in a herringbone pattern, staggered left and right, and the size of the pattern blocks 2 on the left and right sides is the same. The width of the pattern block 2 is La = Lb = Lc = 1 / 3 of the width of the pattern running surface, and Ld = Lb - (6-8mm). Wherein, La is the width of the crown pattern block from the circumference line of the pattern, Lb is the width of the crown pattern block, Lc is the length of the crown pattern block, and Ld is the width of the shoulder pattern block.

[0031] In some embodiments, such as Figure 3 As shown, the radius of the arc of the eighth tread edge 28 is Ra = 240mm-280mm, which makes the edge of the tread block 2 contact the ground more smoothly, reducing stress concentration during contact. Simultaneously, it allows for a smoother transition during tire rolling, helping to increase the crown contact area and laying the foundation for improved wear resistance and puncture resistance. The radius of the arc of the fourth tread edge 24 is Rb = Ra + 5mm, using a radius slightly larger than Ra, further optimizing the curvature of the tread block at this position. Combined with the arc of the eighth tread edge 28, this allows the entire tread block to distribute force more evenly upon contact, avoiding excessive local wear. It also enhances the impact resistance of the tread block in complex farmland environments (such as muddy or gravelly terrain), improving puncture resistance. The radius of the arc between the first tread edge 21 and the eighth tread edge 28 is Rc = The 12mm-20mm radius effectively eliminates the sharp corners at the connection between the two patterned edges, reducing stress concentration at this point. The radius Rd = Rc - 2mm of the arc between the third patterned edge 23 and the fourth patterned edge 24, slightly smaller than Rc, is designed to fit the structural characteristics of this location, making the transition more natural and avoiding the problem of increased local wear caused by angle changes. At the same time, it enhances the structural strength of the patterned block 2 at this location and improves its puncture resistance. The radius Re = 5-10mm of the arc between the second patterned edge 22 and the third patterned edge 23, with its smaller radius, achieves a precise transition at this point. This ensures the functionality of the original angle of the patterned edge (such as traction performance) while avoiding the adverse effects of sharp corners on ground contact, reducing the risk of wear and punctures. It also supports an increase in the crown's ground contact area.

[0032] In some embodiments, the area of ​​the tread block 2 / the driving surface area is 18%-19%, which improves tire grip performance while taking into account traction and self-cleaning properties, and improves vehicle passability, making it more suitable for paddy field or dry land operations and relocation.

[0033] In some embodiments, such as Figure 2 As shown, the tread depth d of the tread block 2 is 1.8-2.2 times that of the tread depth of an R-1 tire of the same specification, or 75-80% of the tread depth of a PR-1 tire of the same specification. For example, the tire specification of this utility model is 13.6-38R2X, the R-1 tire of the same specification is 13.6-38R1, and the PR-1 tire of the same specification is 13.6-38PR1. It takes into account the needs of both paddy field and dry land operations. In paddy fields, it can effectively drain water, preventing the tire from sinking into the mud, while providing good grip; in dry land operations, it can ensure sufficient friction with the ground to ensure traction performance, allowing the tire to protect the farmland while maintaining traction.

[0034] In some embodiments, such as Figure 2 As shown, the patterned block 2 is provided with reinforcing ribs 3. The thickness c1 of the reinforcing rib 3 is 8%-9% of the pattern depth d, and the width C is 40-50mm. The reinforcing rib 3 is trapezoidal, with reinforcing rib transition arcs 31 at both ends, and the radius of the reinforcing rib transition arcs 31 is 20-30mm. The raised reinforcing ribs 3 increase the engagement with the soil, prevent slippage, enhance traction, and increase the width of the reinforcing ribs 3 to disperse ground pressure, reduce soil compaction, and at the same time reduce stress concentration at the crown of the patterned block, avoiding cracks at the root of the patterned block.

[0035] In some embodiments, the number of ground contact pairs of the tread blocks 2 is 2.3-2.5 pairs, which ensures the tire's support performance and traction, reduces abnormal tire wear during field transfers, and improves tire lifespan.

[0036] This utility model features a semi-high traction, dual-purpose agricultural tire suitable for both dry and paddy fields. Its design incorporates a herringbone pattern suitable for dry land and a pattern suitable for paddy fields, along with a reasonable tread depth and design ratio. The design also includes trapezoidal arc transition reinforcement ribs, increasing the tire's contact area with the ground, reducing ground pressure, and minimizing soil compaction. This helps protect the soil structure and ecology of farmland, effectively preventing tire slippage, reducing wasted effort, and ensuring the traction of agricultural machinery, thereby improving operational efficiency and reducing operating costs. It reduces the number of tires required, eliminating the need for separate paddy field and dry land tires. A single agricultural machine can save the cost of four tires. Based on three rotations of paddy and dry land crops per year, this can reduce downtime by 6-12 hours per year, equivalent to an additional 20-30 mu per season. Compared to dry land tires forced into paddy fields, the dual-purpose tire can reduce fuel consumption by 10%-15%, overcoming the limitations of traditional tires in alternating paddy and dry land environments, achieving multiple uses with a single tire, thus improving the adaptability, operational efficiency, and economic benefits of agricultural machinery.

[0037] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this utility model and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

Claims

1. A semi-high-flower, high-traction type agricultural tire suitable for both amphibious and dryland use, characterized in that: include: Tire body (1); Pattern blocks (2), multiple pattern blocks (2) are arranged in a herringbone pattern, staggered left and right on the outer surface of the tire body (1). Each pattern block (2) is composed of a first pattern edge (21), a second pattern edge (22), a third pattern edge (23), a fourth pattern edge (24), a fifth pattern edge (25), a sixth pattern edge (26), a seventh pattern edge (27), and an eighth pattern edge (28) connected end to end in sequence. The first pattern edge (21) and the second pattern edge (22) The included angle between the first pattern edge (21) and the eighth pattern edge (28), the second pattern edge (22) and the third pattern edge (23) are 90°+a1, a1=38°-40°, the included angle between the second pattern edge (22) and the third pattern edge (23) is 90°-a2, a2=a1-5°, the first pattern edge (21) and the eighth pattern edge (28), the second pattern edge (22) and the third pattern edge (23), and the third pattern edge (23) and the fourth pattern edge (24) are all connected by arc transitions, and the fourth pattern edge (24) and the eighth pattern edge (28) are both connected by arcs.

2. The semi-high traction type amphibious agricultural tire according to claim 1, characterized in that, The ratio of the driving surface width to the cross-sectional width of the tire body (1) is 0.90-0.

93.

3. The semi-high-flower, high-traction type amphibious agricultural tire according to claim 1, characterized in that, The ratio of the surface curvature height to the cross-sectional height of the tire body (1) is 0.092-0.

094.

4. The semi-high-flower, high-traction type amphibious agricultural tire according to claim 1, characterized in that, The radius of the arc of the eighth patterned edge (28) is Ra = 240mm-280mm, the radius of the arc of the fourth patterned edge (24) is Rb = Ra + 5mm, the radius of the arc between the first patterned edge (21) and the eighth patterned edge (28) is Rc = 12mm-20mm, the radius of the arc between the third patterned edge (23) and the fourth patterned edge (24) is Rd = Rc - 2mm, and the radius of the arc between the second patterned edge (22) and the third patterned edge (23) is Re = 5-10mm.

5. A semi-high-flower, high-traction type agricultural tire for both amphibious and dryland use according to claim 1, characterized in that, The area of ​​the patterned block (2) / the area of ​​the driving surface = 18%-19%.

6. A semi-high-flower, high-traction type agricultural tire for both amphibious and dryland use according to claim 1, characterized in that, The tread depth of the tread block (2) is 1.8-2.2 times that of the tread depth of the same specification R-1 tire, or 75-80% of the tread depth of the same specification PR-1 tire.

7. A semi-high-flower, high-traction, dual-purpose agricultural tire for both irrigated and dry land use according to claim 1, characterized in that, The patterned block (2) is provided with reinforcing ribs (3), the thickness of which is 8%-9% of the pattern depth and the width is 40-50mm.

8. A semi-high-flower, high-traction, dual-purpose agricultural tire for both irrigated and dry land use according to claim 7, characterized in that, The reinforcing rib (3) is trapezoidal, with reinforcing rib transition arcs (31) at both ends, and the radius of the reinforcing rib transition arcs (31) is 20-30mm.

9. A semi-high-flower, high-traction type agricultural tire for both amphibious and dryland use according to claim 1, characterized in that, The number of grounding pairs of the patterned block (2) is 2.3-2.5 pairs.

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