Tread pattern of a tire and a tire for agricultural vehicles

Abstract

Tread pattern of a tire for agricultural vehicles, characterized in that the tread pattern comprises a central tread block provided along the circumference of the tire, wherein a right side of the central tread block is successively provided with a second tread block (2) provided along the circumference of the tire and a first tread block (1) provided along the circumference of the tire, while a left side of the central tread block is successively provided with a fourth tread block (4) provided along the circumference of the tire and a third tread block (3) provided along the circumference of the tire, wherein the central tread block is alternately provided with a fifth tread block (5) and a sixth tread block (6), wherein the fifth tread block (5) and the sixth tread block (6) are connected by the first cross-connecting reinforcement rib (11).wherein a row of the central profile block, formed by the alternating arrangement of the fifth profile block (5) and the sixth profile block (6), has a wave-like shape; wherein the first profile block (1) and the second profile block (2) are connected by the first longitudinal connecting reinforcing rib (10),and the third profile block (3) and the fourth profile block (4) are connected by the second longitudinal connection reinforcement rib (9); wherein the first profile block (1) and the second profile block (2) are each provided on both sides with the second transverse connection reinforcement rib (13) and the third transverse connection reinforcement rib (14), respectively; wherein the third profile block (3) and the fourth profile block (4) are obtained by symmetricalizing the first profile block (1) and the second profile block (2) and subsequently displacing them by 50-100 mm; wherein a first transverse profile groove (7) is provided between the first profile block (1) and the second profile block (2) and the longitudinally adjacent profile blocks, while a second transverse profile groove (8) is provided between the third profile block (3) and the fourth profile block (4) and the longitudinally adjacent profile blocks.

Description

TECHNICAL AREA

[0001] The present utility model relates to an agricultural tire, in particular a tread pattern and a tire for agricultural vehicles. STATE OF THE ART

[0002] The tire tread pattern is a crucial factor in improving a vehicle's handling and a critical element in tire design. Selecting the correct tread pattern is essential. The appropriate tread pattern should be chosen according to the vehicle's intended use, road conditions, and speed.

[0003] Currently, the tread saturation of agricultural tires, such as the CN203681159U high-floating agricultural radial tire and the CN307615407S (IMP800 agricultural radial tire), is low, and the tires deform easily, placing high demands on the wear resistance of the tread blocks. Agricultural tires are used in harsher environments where loose soil exerts less support on the tire, requiring the tire to be subjected to a more consistent force to achieve lower ground contact pressure. A better solution must be found when designing and developing tires to support the global market for agricultural machinery and vehicles. CONTENTS OF THE PRESENT USE SAMPLE

[0004] To solve the aforementioned problems, the present utility model offers a tread pattern of a tire and a tire for agricultural vehicles with a high saturation level of the tread, wherein the tire is subjected to a uniform force in order to achieve a lower ground contact pressure suitable for use on loose soil.

[0005] The technical solution of the utility model is a tread pattern of a tire for agricultural vehicles, wherein the tread pattern comprises a central tread block provided along the circumference of the tire, wherein a right side of the central tread block is successively provided with a second tread block provided along the circumference of the tire and a first tread block provided along the circumference of the tire, while a left side of the central tread block is successively provided with a fourth tread block provided along the circumference of the tire and a third tread block provided along the circumference of the tire, wherein the central tread block is alternately provided with a fifth tread block and a sixth tread block, wherein the fifth tread block and the sixth tread block are connected by the first cross-connecting reinforcement rib.wherein a row of the central profile block, formed by the alternating arrangement of the fifth and sixth profile blocks, has a wave-like shape; wherein the first and second profile blocks are connected by the first longitudinal connecting reinforcement rib, and the third and fourth profile blocks are connected by the second longitudinal connecting reinforcement rib; wherein the first and second profile blocks are each provided on both sides with the second and third transverse connecting reinforcement ribs, respectively; wherein the third and fourth profile blocks are obtained by symmetricalizing the first and second profile blocks and then displacing them by 50-100 mm; wherein a first transverse profile groove is provided between the first and second profile blocks and the longitudinally adjacent profile blocks,while a second transverse profile groove is provided between the third profile block and the fourth profile block and the longitudinally adjacent profile blocks.

[0006] The surface area of ​​the second tread block is 70-80% of that of the first. The first transverse groove is an involute groove running from the center of the tread to the tire shoulder.

[0007] The ratio of the surface area of ​​the fifth profile block to that of the sixth profile block is 50-60%.

[0008] The width of the first cross-connection reinforcing rib at the ends in the longitudinal direction is in each case the same as the width of its profile which is connected to the fifth profile block or the sixth profile block, namely with a width of 9-11 mm, wherein the thickness of the reinforcing rib is 0.5-0.6 of the profile blocks on both sides of it.

[0009] The length of the first longitudinal connection reinforcement rib at the ends in the width direction is the same as the length of the fifth or sixth profile block connected to it, wherein the thickness of the first longitudinal connection reinforcement rib is 0.7-0.8 of the thickness of the profile blocks connected to it on both sides.

[0010] The width of the second cross-connection reinforcing rib is 60%–70% of the combined width of the first and second profile blocks, while the width of the third cross-connection reinforcing rib is 80%–90% of the combined width of the first and second profile blocks. The left end of the second cross-connection reinforcing rib is located at a 1 / 2 position on the second profile block, while the left end of the third cross-connection reinforcing rib is connected to the left end of the second profile block. Because the lower left corner of the second profile block has an acute angle, it will create a stress concentration and be prone to breaking out of the block. Therefore, the third cross-connection reinforcing rib is used to reduce this stress concentration and improve the stiffness and wear resistance of the profile block.The thickness of the second cross-connection reinforcement rib, the third cross-connection reinforcement rib is 40-45% of the thickness of the first or the profile block of the second profile block.

[0011] The first profile block, the second profile block, the third profile block and the fourth profile block have a "herringbone" design on both sides of the central profile block.

[0012] Tires for agricultural vehicles, including the tread pattern.

[0013] The present utility model offers the following advantages: it provides a tread pattern for a tire and a tire for agricultural vehicles, wherein ground contact of the tire on a muddy path is ensured by the addition of a first transverse reinforcing rib, a second longitudinal reinforcing rib, and a third longitudinal reinforcing rib. Simultaneously, a reinforcing rib is added between one tread block and another, with the second and third transverse reinforcing ribs being provided in the tire shoulder profile. This reduces the propagation of cracks in the tread block and can disperse ground contact pressure of the tread block, and the tire is subjected to a uniform force to achieve a lower ground contact pressure suitable for use on loose soil. BRIEF DESCRIPTION OF THE DRAWING Fig. Figure 1 shows a schematic representation of the structure of the utility model; Fig. Figure 2 shows a schematic diagram of the three-dimensional structure of Fig. 1.

[0014] 1 first profile block; 2 second profile block; 3 third profile block; 4 fourth profile block; 5 fifth profile block; 6 sixth profile block; 7 first transverse profile groove; 8 second transverse profile groove; 9 second longitudinal connection reinforcement rib; 10 first longitudinal connection reinforcement rib; 11 first transverse connection reinforcement rib; 13 second transverse connection reinforcement rib; 14 third transverse connection reinforcement rib. DETAILED EXECUTION FORMS

[0015] A clear and complete description of the technical solution of the present utility model is given below in conjunction with the drawings and specific embodiments. It should be understood that the preferred embodiments described herein serve only to illustrate and explain the present utility model and are not to be construed as limiting the scope of protection of the present utility model, and that the person skilled in the art may make a number of non-inherent improvements and adaptations in accordance with the following content of the present utility model. In the present utility model, the technical terms used in the present application have, unless expressly stated otherwise and limited, the usual meanings as understood by the person skilled in the art. The terms "connected," "connect," "fasten," "provide," etc., are to be interpreted broadly.It can be a permanent connection, a detachable connection, or an integrated connection. It can also be a direct connection or an indirect connection via an intermediate medium. And it can be a mechanical connection or an electrical connection. Unless expressly stated otherwise, the specific meanings of the above terms in this utility model may be understood by a competent person depending on the specific circumstances. Unless expressly stated otherwise and limited, the first feature "on" or "below" the second feature can be direct contact between the first and second features or indirect contact between the first and second features via an intermediate medium. Furthermore, the first feature can be "above" or "over" or "top", etc.The first feature may be such that the first feature is directly above or diagonally above the second feature, or simply that the first feature is horizontally higher than the second feature. The first feature may be "below," "under," or "below" the second feature, such that the first feature is directly below or diagonally below the second feature, or simply that the first feature is horizontally lower than the second feature. Relational terms such as "first," "second," etc., are used only to distinguish one unit or operation from another and do not necessarily require or imply any actual relationship or sequence between the units or operations. Note that similar reference symbols and letters in subsequent drawings represent similar elements. Therefore, an element defined in one drawing need not be further defined and explained in subsequent drawings.

[0016] The Fig. 1 and Fig. Figure 2 shows a tread pattern of a tire for agricultural vehicles, wherein the tread pattern comprises a central tread block provided along the circumference of the tire, wherein a right side of the central tread block is successively provided with a second tread block 2 provided along the circumference of the tire and a first tread block 1 provided along the circumference of the tire, while a left side of the central tread block is successively provided with a fourth tread block 4 provided along the circumference of the tire and a third tread block 3 provided along the circumference of the tire, wherein the central tread block is alternately provided with a fifth tread block 5 and a sixth tread block 6, wherein the fifth tread block 5 and the sixth tread block 6 are connected by the first cross-connecting reinforcement rib 11, wherein a row of the central tread block,which is formed by the alternating arrangement of the fifth profile block 5 and the sixth profile block 6, has a wave-like shape; wherein the first profile block 1 and the second profile block 2 are connected by the first longitudinal connection reinforcement rib 10, and the third profile block 3 and the fourth profile block 4 are connected by the second longitudinal connection reinforcement rib 9; wherein the first profile block 1 and the second profile block 2 are each provided on both sides with the second transverse connection reinforcement rib 13 and the third transverse connection reinforcement rib 14, respectively; wherein the third profile block 3 and the fourth profile block 4 are obtained by symmetricalizing the first profile block 1 and the second profile block 2 about the central axis CL and subsequently displacing them by 50-100 mm; wherein a first transverse profile groove 7 is provided between the first profile block 1 and the second profile block 2 and the longitudinally adjacent profile blocks,while a second transverse profile groove 8 is provided between the third profile block 3 and the fourth profile block 4 and the longitudinally adjacent profile blocks, so that the first transverse profile groove 7 can again be symmetrical about the central axis and displaced and then completely overlap with the second transverse profile groove 8, wherein the first profile block 1, the second profile block 2, the third profile block 3, the fourth profile block 4, the first transverse profile groove 7, the second transverse profile groove 8, the second longitudinal connection reinforcement rib 9, the first longitudinal connection reinforcement rib 10 along the central axis CL, where points P1 and P2 are located, are divided into a left-hand section and a right-hand section, wherein the left-hand section can be symmetrical about the central axis and displaced and then completely overlaps with the right-hand section.

[0017] Profile block 5 and profile block 6 are arranged longitudinally in alternating, repeating rows.

[0018] The fifth profile block 5 and the sixth profile block 6 are arranged alternately to form a series of profile blocks having a wave shape, with a zigzag shape being formed between the adjacent fifth profile block 5 and sixth profile block 6, as shown in Fig. shown.

[0019] Since the third profile block 3 and the fourth profile block 4 are obtained by symmetry of the first profile block 1 and the second profile block 2 about the central axis CL and subsequent displacement, the third profile block 3 and the fourth profile block 4 are each provided on both sides with the second cross-connection reinforcement rib 13 and the third cross-connection reinforcement rib 14 respectively.

[0020] The third profile block 3 and the fourth profile block 4 are obtained by symmetricalizing the first profile block 1 and the second profile block 2 around the central axis CL and then shifting them by 80 mm.

[0021] The surface area ratio of the second tread block 2 to that of the first tread block 1 is 70-80%. The first transverse groove 7 is an involute groove running from the center of the tread to the tire shoulder. The involute groove offers improved mud drainage and grip.

[0022] The ratio of the surface area of ​​the fifth tread block (5) to that of the sixth tread block (6) is 50-60%, which optimizes the saturation of the central tread block and improves the stability of the tire at high driving speeds.

[0023] In this application, the circumferential direction of the tire is defined as the longitudinal direction; therefore, the width of the first cross-connection reinforcing rib 11 at the ends in the longitudinal direction is in each case the same as the width of its profile, which is connected to the fifth profile block 5 and the sixth profile block 6 respectively, with a width of 9-11 mm, wherein the thickness of the first cross-connection reinforcing rib 11 is 0.5-0.6 of the connected profile blocks on both sides thereof, thereby optimizing the continuity of the ground contact of the profile, ensuring uniform force, low ground contact pressure, and achieving a reduction in soil compaction and protection of the soil.

[0024] The length of the first longitudinal connection reinforcement rib 10 at the ends in the width direction is the same as the length of the second profile block 2 or first profile block 1 connected to it, wherein the thickness of the first longitudinal connection reinforcement rib 10 is 0.7-0.8 the thickness of the profile blocks connected to it on both sides, thereby reducing the extent of deformation during use and improving the traction performance of the tire.

[0025] The second cross-link reinforcement rib 13 and the third cross-link reinforcement rib 14 are designed to improve the wear resistance and mud drainage performance of the tire.

[0026] The width of the second cross-connection reinforcing rib 13 is 60%–70% of the total width of the first 1 and the second profile block 2, while the width of the third cross-connection reinforcing rib 14 is 80%–90% of the total width of the first profile block 1 and the second profile block 2. The left end of the second cross-connection reinforcing rib 13 is located at a 1 / 2 position of the second profile block 2, while the left end of the third cross-connection reinforcing rib 14 is connected to the left end of the second profile block 2. Since the lower left corner of the second profile block 2 has an acute angle, it will create a stress concentration and easily detach from the block. Therefore, the third cross-connection reinforcing rib 14 is used to reduce the stress concentration and improve the stiffness and wear resistance of the profile block.The thickness of the second cross-connection reinforcement rib 13, the third cross-connection reinforcement rib 14 is 40-45% of the thickness of the first profile block 1 or the second profile block 2.

[0027] Furthermore, the saturation of the tire tread in the present application is 50-55%.

[0028] The first tread block 1, the second tread block 2, the third tread block 3, and the fourth tread block 4 each feature a herringbone design on both sides of the central tread block. This herringbone design is directional and designed to improve the tire's handling and traction. The herringbone design is a common prior art design, as described, for example, in CN209869967U_, a herringbone tire with a special tread pattern for rice paddies.

[0029] Tires for agricultural vehicles, including the aforementioned tread pattern.

[0030] In comparison to the prior art, the present utility model provides a tread pattern for a tire and a tire for agricultural vehicles, wherein a ground contact area of ​​the tire on a muddy path is ensured by the addition of a first transverse reinforcement rib 11, a second longitudinal reinforcement rib 10, and a first longitudinal reinforcement rib 9. Simultaneously, a connecting reinforcement rib is added between one tread block and another, wherein the second and third transverse reinforcement ribs are provided in the tire shoulder profile. This reduces the propagation of cracks in the tread block and can disperse ground contact pressure of the tread block, and wherein the tire is subjected to a uniform force to achieve a lower ground contact pressure suitable for use on loose soil.The tread pattern utilizes a herringbone design to enhance handling and traction. The transverse groove (7) is an involute groove, promoting water and mud drainage while maintaining optimal handling. The high-saturation central groove optimizes ground contact pressure distribution, enhancing stability. This optimized tread pattern reduces ground contact pressure, thereby minimizing soil compaction and protecting the soil.The design described above is used in combination, taking into account the design requirements of stability during driving, mud drainage, traction performance, ground contact smoothness and ground contact uniformity at low air pressure, which contributes to improving the service life of the tire, especially for agricultural vehicles in harsh environments.

[0031] The embodiments described above are only preferred embodiments of the utility model, but not all possible embodiments. The scope of protection of the utility model is not limited to these. The technical features of the embodiments described above can be combined in any way, although for the sake of brevity, not all possible combinations of the technical features of the embodiments described above have been described. However, as long as there are no contradictions in the combination of these technical features, they should be considered to be within the scope of this description. If the combination of technical solutions is contradictory or not feasible, it should be assumed that such a combination does not exist and is not within the scope of protection of the utility model.It should be pointed out that for any person skilled in the art who is familiar with the prior art, equivalent replacement or modification, as well as various changes and improvements made in accordance with the technical solution of the utility model and its utility model idea, should also be regarded as being within the scope of protection of the utility model, provided that they do not deviate from the spirit of the overall idea of ​​the utility model and the principle of the utility model. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 203681159U

[0003] CN 307615407S

[0003] CN 209869967U

[0028]

Claims

[1] Tread pattern of a tire for agricultural vehicles, characterized by, that the tread pattern comprises a central tread block provided along the circumference of the tire, wherein a right side of the central tread block is successively provided with a second tread block (2) provided along the circumference of the tire and a first tread block (1) provided along the circumference of the tire, while a left side of the central tread block is successively provided with a fourth tread block (4) provided along the circumference of the tire and a third tread block (3) provided along the circumference of the tire, wherein the central tread block is alternately provided with a fifth tread block (5) and a sixth tread block (6), wherein the fifth tread block (5) and the sixth tread block (6) are connected by the first cross-connecting reinforcement rib (11), wherein a row of the central tread block,which is formed by the alternating arrangement of the fifth profile block (5) and the sixth profile block (6), has a wave-like shape; wherein the first profile block (1) and the second profile block (2) are connected by the first longitudinal connection reinforcing rib (10), and the third profile block (3) and the fourth profile block (4) are connected by the second longitudinal connection reinforcing rib (9); wherein the first profile block (1) and the second profile block (2) are each provided on both sides with the second transverse connection reinforcing rib (13) and the third transverse connection reinforcing rib (14), respectively; wherein the third profile block (3) and the fourth profile block (4) are obtained by symmetricalizing the first profile block (1) and the second profile block (2) and then displacing them by 50-100 mm; wherein a first transverse profile groove (7) is provided between the first profile block (1) and the second profile block (2) and the longitudinally adjacent profile blocks,while a second transverse profile groove (8) is provided between the third profile block (3) and the fourth profile block (4) and the longitudinally adjacent profile blocks. [2] Tread pattern of a tire for agricultural vehicles according to claim 1, characterized by , that the ratio of the surface area of ​​the second profile block (2) to that of the first profile block (1) is 70-80% and the first transverse profile groove (7) is an involute profile groove from the center of the tread to the tire shoulder. [3] Tread pattern of a tire for agricultural vehicles according to claim 1, characterized by , that the ratio of the surface area of ​​the fifth profile block (5) to that of the sixth profile block (6) is 50-60%. [4] Tread pattern of a tire for agricultural vehicles according to claim 1, characterized by, that the width of the first cross-connecting reinforcing rib (11) at the ends in the longitudinal direction is the same as the width of its profile which is connected to the fifth profile block (5) or the sixth profile block (6), respectively, with a width of 9-11 mm, wherein the thickness of the reinforcing rib is 0.5-0.6 of the profile blocks on both sides thereof. [5] Tread pattern of a tire for agricultural vehicles according to claim 1, characterized by , that the length of the first longitudinal connection reinforcement rib (10) at the ends in the width direction is the same as the length of the fifth profile block (2) or sixth profile block (1) connected to it, wherein the thickness of the first longitudinal connection reinforcement rib (10) is 0.7-0.8 of the thickness of the profile blocks connected to it on both sides. [6] Tread pattern of a tire for agricultural vehicles according to claim 1, characterized by, that the width of the second cross-connection reinforcing rib (13) is 60% - 70% of the total width of the first profile block (1) and the second profile block (2), while the width of the third cross-connection reinforcing rib (14) is 80% - 90% of the total width of the first profile block (1) and the second profile block (2); wherein the left end of the second cross-connection reinforcing rib (13) is located at a 1 / 2 position of the second profile block (2), while the left end of the third cross-connection reinforcing rib (14) is connected to the left end of the second profile block (2); wherein the thickness of the second cross-connection reinforcing rib (13), the third cross-connection reinforcing rib (14) is 40-45% of the thickness of the first profile block (1) or the second profile block (2). [7] Tread pattern of a tire for agricultural vehicles according to claim 1, characterized by, that the first profile block (1), the second profile block (2), the third profile block (3) and the fourth profile block (4) have a "herringbone" design on both sides of the central profile block. [8] Tires for agricultural vehicles, characterized by that it has the tread profile claimed in any one of claims 1 to 7.

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