High saturation buoyancy type agricultural tire
By designing a high-saturation buoyancy-type agricultural tire, the contact area between the tread blocks and the driving surface is increased. Combined with optimized tread depth and structural parameters, the problem of existing tires damaging grasslands and soil has been solved, achieving tire performance with high traction, self-cleaning properties, and long life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU XUGONG TIRES
- Filing Date
- 2025-05-22
- Publication Date
- 2026-07-10
AI Technical Summary
Existing agricultural tires, when used in environments requiring ground protection such as lawns, grasslands, or forage crops, have tread designs that can easily damage the grass or compact the soil. They also have a small contact patch, are prone to slipping, and lack self-cleaning and puncture resistance, which affects operational efficiency and tire lifespan.
The agricultural tire adopts a high-saturation buoyancy design, which increases the ratio of tread block area to driving surface area to 50%-52%, combines symmetrical graphic combinations of different areas, and has a tread depth of 15mm-28mm. Multiple tread grooves are set and the tread groove inclination and curvature are optimized. The longitudinal and lateral arcs and connecting reverse arc parameters are designed to form a symmetrical gradient distribution.
It significantly increases the contact area between the tread blocks and the ground, reduces the depth of the tire treads in the soil, protects the ecological environment, improves stability and wear resistance, enhances self-cleaning and puncture resistance, extends tire life, and reduces manufacturing costs and energy consumption.
Smart Images
Figure CN224476777U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tire processing technology, specifically relating to a high-saturation buoyancy type agricultural tire. Background Technology
[0002] Agricultural tires typically consist of a bead, sidewall, and tread. The bead securely attaches to the rim, transmits vehicle weight, and prevents slippage. The sidewall connects the bead and tread, supports the tire body, and withstands lateral stresses (such as lateral forces during cornering). The tread, as the main part in contact with the ground, has a tread pattern design (including parameters such as tread block area, depth, camber angle, and groove bottom curvature) that directly affects the tire's traction, stability, and terrain adaptability.
[0003] Existing agricultural tires (such as R-1, R-1W, R-2, etc.) mainly achieve traction by increasing tread depth (usually 22mm-45mm) and using a deep groove, high block tread design to allow the tread pattern to penetrate the soil. This design performs well in muddy and hard ground environments, but it has the following shortcomings in operating scenarios where the ground surface needs to be protected, such as lawns, grasslands, or forage crops: First, excessive tread penetration into the soil can easily lead to grass damage or soil compaction, damaging the ecological environment; Second, the tread saturation (tread block area / driving surface area) of traditional agricultural tires is only 25%-30%, resulting in a small contact area, making them prone to slipping on soft, muddy roads or snow, and lacking self-cleaning properties (soil removal ability) and puncture resistance, affecting operating efficiency and tire life. Summary of the Invention
[0004] The present invention aims to solve the above-mentioned prior art and reduce the impact of agricultural tires on grasslands and other ecological environments.
[0005] The technical solutions adopted in this utility model are as follows:
[0006] A high-saturation buoyancy type agricultural tire includes a bead, a sidewall, and a crown, wherein the bead is located on both sides of the tire and connected to the wheel hub;
[0007] The sidewall connects the bead and the crown, supporting the tire body and bearing lateral forces. The crown is located on the outer side of the tire and consists of tread blocks and tread grooves. The tread blocks are designed with symmetrical patterns of different areas, and the ratio of the tread block area to the surface area is 50%-52%.
[0008] The pattern blocks are ordered by area as Pattern 1, Pattern 2, Pattern 3, Pattern 4 and Pattern 5, with Pattern 1 and Pattern 2 located in the middle of the tire crown.
[0009] By adopting the above technical solutions, through the structural design of the bead, sidewall, and crown, combined with the high saturation of the tread blocks (the ratio of tread block area to the driving surface area is 50%-52%) and the core features of symmetrical graphic combinations of different areas, the high saturation design significantly increases the contact area between the tread blocks and the ground, reduces the unit ground pressure, and enables the tire to reduce the depth of tread tread penetration into the soil, effectively preventing damage to grasslands or compaction of soil structure, thus protecting the ecological environment. The symmetrical graphic combination of tread blocks balances the traction force on both sides, avoiding deviation or lateral stress concentration caused by tread asymmetry. Furthermore, the large area of tread pattern one and pattern two in the middle further increases the center ground contact area of the crown, improving the stability and wear resistance of the tire when driving straight. The large area of tread blocks in the middle covers the core area of the crown, reducing the risk of sharp objects directly puncturing the tire body, enhancing the tire's puncture resistance, and extending its service life.
[0010] Furthermore, the tread depth of the tire crown is 15mm-28mm.
[0011] By adopting the above technical solutions, the tread depth is designed to be 15mm-28mm. Reducing the tread depth effectively reduces the damage of tire treads to pastures or farmland, avoiding turf tearing or soil compaction caused by excessive tread penetration, thus better protecting the ecological environment. The reduction in tread depth directly reduces the amount of rubber material used, lowering tire manufacturing costs. The tire weight is reduced as the material is reduced, which can reduce energy consumption during agricultural machinery operation and improve operational efficiency. Combined with the increased contact area of the high-saturation tread blocks, even with a shallow tread depth, sufficient traction can still be guaranteed by increasing the contact area, avoiding insufficient grip due to excessive depth.
[0012] Furthermore, pattern three, pattern four and pattern five are located on both sides of the tire crown, and multiple pattern grooves are provided on the pattern block.
[0013] By adopting the above technical solution, pattern three, pattern four, and pattern five are set on both sides of the tire crown, and multiple tread grooves are set on their tread blocks. The small tread blocks on both sides and the large tread blocks in the middle form a symmetrical gradient distribution, so that the tire ground pressure transitions evenly from the center to both sides, avoiding local sinking and reducing damage to the ground surface. The tread blocks on both sides, together with the tread blocks in the middle, provide auxiliary traction when turning or moving laterally, balancing the force on both sides of the tire and avoiding sideslip or deviation caused by insufficient tread on one side. Mud, grass clippings, and other debris can be quickly discharged from the grooves, significantly improving self-cleaning performance and avoiding the decrease in grip or additional wear caused by mud trapped between tread blocks. The distribution of multiple tread grooves disperses local stress during driving, reduces concentrated wear at the edges of the tread blocks, and extends tire life.
[0014] Furthermore, the inclination angle α of the groove is 16°-20°, and the arc Ra of the bottom of the groove is 3mm-6mm.
[0015] By adopting the above technical solutions, the larger camber angle effectively disperses the stress concentration at the bottom of the tread grooves during driving, avoiding groove bottom cracks caused by excessive stress concentration and improving tire durability. The rounded design at the bottom of the grooves eliminates the sharp edges of traditional tread grooves, reducing the risk of sharp objects getting stuck at the bottom of the grooves and puncturing the tire, thus enhancing the tire's puncture resistance. The combination of camber angle and curvature optimizes the mud removal path of the tread grooves, making it easier for mud, grass clippings, and other debris to be discharged from the grooves when the tire rolls, improving self-cleaning properties. During the tire vulcanization process, this camber angle and curvature design reduces the fit between the mold and the finished product, making it easier for the tire to be removed from the mold, reducing the defect rate in the production process and improving manufacturing efficiency.
[0016] Furthermore, the longitudinal arc Rc of the patterned block is 16mm-30mm, the transverse arc Rb of the patterned block does not exceed the longitudinal arc Rc of the patterned block; and the connecting reverse arc Re of the patterned block is 90mm-130mm.
[0017] By adopting the above technical solution, the longitudinal arc Rc of the tread block is designed with a parameter combination of 16mm-30mm, lateral arc Rb not exceeding the longitudinal arc Rc, and connecting reverse arc Re of 90mm-130mm. The longitudinal arc makes the transition between the tread block and the ground smoother, reduces local wear caused by edge friction, and significantly improves the wear resistance of the tread block. The design of lateral arc Rb≤Rc avoids excessive deformation of the tread block under lateral force, ensures the structural strength of the tread block, and effectively prevents lateral tearing. The connecting reverse arc increases the transition arc between adjacent tread blocks, eliminates stress concentration points at right angles or small arc connections, and reduces the risk of cracking at the connection of tread blocks. By controlling the parameters of longitudinal, lateral and connecting arcs, while ensuring the area of the tread block, the width and spacing of the tread block are optimized, which not only improves the grip of the tire, but also makes it easier for mud, grass clippings and other debris to be discharged from the tread groove, avoiding the decrease in grip or cracks at the bottom of the tread groove caused by mud.
[0018] This utility model has the following beneficial effects:
[0019] 1. This utility model increases the contact area between the tread blocks and the ground by adopting a high-saturation pattern design and an optimized tread depth of 15mm-28mm, thereby reducing the unit grounding pressure and the depth of the tire pattern in the soil. This effectively prevents damage to the pasture or compaction of the soil structure, while also reducing the amount of rubber material used, lowering manufacturing costs and reducing tire weight, thus achieving a dual improvement in ecological protection and economy.
[0020] 2. This utility model balances the traction on both sides of the tire by combining symmetrical graphic combinations of different areas of the tread blocks and setting large-area tread patterns one and two in the middle, avoiding deviation or lateral stress concentration, increasing the ground contact area of the crown center, improving straight-line stability and wear resistance, and covering the core area to reduce the risk of sharp objects puncturing and enhance puncture resistance.
[0021] 3. This utility model sets pattern three, four and five on both sides of the tire crown and configures multiple pattern grooves. Combined with the 16°-20° inclination angle of the pattern grooves and the 3mm-6mm groove bottom curvature design, it forms a symmetrical gradient distribution of ground pressure to avoid local sinking. At the same time, it optimizes the mud discharge path, improves self-cleaning, disperses stress to reduce wear, effectively prevents sideslip and extends tire service life.
[0022] 4. By controlling the parameter combination of the longitudinal arc, transverse arc and connecting reverse arc of the patterned block, this utility model makes the contact between the patterned block and the ground smoother, avoids excessive transverse deformation and stress concentration at the connection, improves grip and wear resistance, and optimizes the spacing between the patterned blocks to promote the discharge of debris, thus achieving synergistic optimization of structural strength and performance. Attached Figure Description
[0023] Figure 1 This is a pattern unfolded diagram of the present invention;
[0024] Figure 2 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation
[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
[0026] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.
[0027] Reference Figure 1 and Figure 2As can be seen, this utility model discloses a high-saturation buoyancy agricultural tire. The high-saturation buoyancy agricultural tire of this utility model is composed of three main parts: the bead, the sidewall, and the crown. The bead is located on both sides of the tire and is symmetrically distributed. It is fixedly connected to the wheel hub and its main functions are to transfer vehicle weight, support the tire structure, and prevent slippage and air leakage. The sidewall connects the bead and the crown and is located in the transition area on the side of the tire. It contains a ply layer to support the tire body shape and maintain its contour, bearing lateral stress and buffering impacts during operation. The crown, as the core structure in direct contact with the ground, consists of tread blocks and tread grooves. The tread blocks are symmetrically arranged in combinations of different areas, ordered by area as pattern one, pattern two, pattern three, pattern four, and pattern five. Patterns one and two are large, symmetrically arranged blocks. At the center of the crown, three to five small tread blocks are symmetrically distributed on the shoulder, with the total area of the tread blocks being 50% of the driving surface area. This increases the contact area to achieve buoyancy-type ground contact. The tread depth is 15mm, only 62% of that of the R1 tread of the same specification, reducing the depth of the tread into the soil and reducing material usage. The tread groove inclination angle α is adjusted according to the depth: 16° for 20mm and 19° for depths exceeding 26mm. The groove bottom adopts an arc design, with the middle block Ra being 8mm or 11mm and the shoulder block Ra being 3mm or Rb being 5mm, dispersing stress, reducing punctures, and optimizing mud removal. The longitudinal arc Rc of the tread blocks is 16mm to ensure a smooth transition in the rolling direction, and the lateral arc Rd = Rc - 2mm to avoid lateral deformation. The connecting reverse arc Re is 90mm to disperse stress at the connection point. Through the synergy of the above hierarchical structure and parameters, an agricultural tire structural system is formed that balances ecological protection and reduced surface damage, high traction performance, self-cleaning properties, durability, wear resistance, and puncture resistance.
[0028] Working principle: By significantly increasing the contact area with the ground through a high-saturation tread block area ratio compared to traditional tires, the tire reduces the unit ground pressure. Combined with a symmetrical gradient distribution of large tread blocks in the center and decreasing on both sides, the tire "floats" on the surface of lawns or farmland, reducing the depth of tire tread penetration into the soil and preventing damage to the turf or soil compaction, thus achieving ecological protection. Simultaneously, the high contact area compensates for the insufficient traction of shallow treads. The inclined and rounded design of the tread grooves optimizes the mud removal path, quickly expelling mud and debris, balancing traction and self-cleaning properties. In terms of durability, the large tread groove inclination angle disperses driving stress, and the reverse arc at the connection eliminates stress concentration at the joints. Combined with the large central tread block covering the core area and the rounded transition design, the risk of punctures and localized wear is reduced, improving wear resistance and crack resistance. Furthermore, the structural design is adapted to manufacturing processes. Optimized groove inclination angles and curvature reduce mold fit, and shallow treads reduce material usage, improving production efficiency and reducing manufacturing costs. Ultimately, the synergistic effect of all design elements enables the tire to protect the earth's surface ecology while also ensuring high traction, strong self-cleaning properties, and long lifespan, making it suitable for agricultural operations such as lawns and grasslands where surface protection is required.
[0029] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.
Claims
1. A high-saturation buoyancy agricultural tire, comprising a bead, a sidewall, and a crown, characterized in that: The tire bead is located on both sides of the tire and connects to the wheel hub; The sidewall connects the bead and the crown, supporting the tire body and bearing lateral forces. The crown is located on the outer side of the tire and consists of tread blocks and tread grooves. The tread blocks are designed with symmetrical patterns of different areas, and the ratio of the tread block area to the surface area is 50%-52%. The pattern blocks are ordered by area as Pattern 1, Pattern 2, Pattern 3, Pattern 4 and Pattern 5, with Pattern 1 and Pattern 2 located in the middle of the tire crown.
2. The high-saturation buoyancy agricultural tire according to claim 1, characterized in that: The tread depth of the tire crown is 15mm-28mm.
3. The high-saturation buoyancy agricultural tire according to claim 1, characterized in that: Pattern three, pattern four and pattern five are located on both sides of the tire crown, and multiple pattern grooves are also provided on the pattern block.
4. The high-saturation buoyancy agricultural tire according to claim 3, characterized in that: The inclination angle α of the groove is 16°-20°, and the arc Ra of the bottom of the groove is 3mm-6mm.
5. The high-saturation buoyancy agricultural tire according to claim 1, characterized in that: The longitudinal arc Rc of the patterned block is 16mm-30mm, and the transverse arc Rb of the patterned block does not exceed the longitudinal arc Rc of the patterned block; the connecting reverse arc Re of the patterned block is 90mm-130mm.