Land leveler tire pattern

Abstract

Transverse pattern blocks I and transverse pattern blocks II are alternately arranged on the two sides of a tire respectively, the adjacent transverse pattern blocks I and transverse pattern blocks II on the same side of the tire are separated through transverse pattern grooves I, and the transverse pattern grooves I on the two sides of the tire are communicated through transverse pattern grooves II; the first transverse pattern blocks on the two sides of the tire are separated through first longitudinal pattern grooves, and the first longitudinal pattern grooves are communicated with the second transverse pattern grooves. The included angle between the center line of the first transverse pattern block and the center line of the tire crown and the included angle between the center line of the second transverse pattern block and the center line of the tire crown are 60-70 degrees, and the included angle between the center line of the second transverse pattern groove and the center line of the tire crown is 40-50 degrees. Due to the design of the transverse pattern grooves, the road holding force of the land leveler during operation is improved; due to the transverse through pattern grooves, the angle design of the pattern grooves and the gradual increase of the width of the transverse pattern grooves I, soil in the pattern grooves can be conveniently discharged in time when the tire rotates, and the self-cleaning performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire patterns, in particular to a tire pattern for a grader. Background Art

[0002] As an important earth-moving construction machine, the motor grader plays an important role in infrastructure construction, road construction, mining and other fields. With the continuous development of large-sized motor graders by OEMs and the continuous improvement of technology, the market share of large-sized motor graders has gradually increased. As one of its important components, the demand for tires has also increased, and new requirements for tire performance have been put forward. Large-sized motor graders such as XCMG GR5505 and CAT 24 are currently mainly used for road leveling and road maintenance in large mines. The performance requirements for tires are mainly as follows:

[0003] 1. Different from transport equipment, the operation mode of the grader determines that the tires need to provide strong grip during operation;

[0004] 2. To prevent the tire's grip from decreasing due to mud filling the tread grooves on soft and muddy roads, the tire needs to have better mud discharge and self-cleaning performance;

[0005] 3. The main working scene at present is large-scale mines. When loaded, the motor grader runs at a low speed. However, when it goes to the working area without load, the transportation distance is long and the speed is fast, and the tires have the problem of heat generation and delamination.

[0006] 4. Large-sized graders have higher power and output torque. When the tires grip the ground, the tread blocks are subjected to greater force, resulting in greater deformation. Long-term and large-scale bending and deformation will cause cracks at the bottom of the groove.

[0007] Therefore, according to the usage scenario characteristics of large graders, it is necessary to carry out targeted design of their tire patterns to improve the comprehensive performance of the tires and meet their usage requirements. Utility Model Content

[0008] The technical problem to be solved by the utility model is: to overcome the shortcomings of the prior art and provide a tire pattern for a grader, the design of the transverse pattern grooves makes the tire have better traction performance and improves the grip of the grader during operation; the transverse through-type pattern groove design, the pattern groove angle optimization design and the design of gradually increasing the width of the transverse pattern grooves make it easy to discharge the mud in the pattern grooves in time when the tire rotates, and the self-cleaning performance can be improved.

[0009] The technical solution of the utility model is:

[0010] The grader tire tread has transverse tread blocks one and two alternately arranged on both sides of the tire. The adjacent transverse tread blocks one and two on the same side of the tire are separated by a first transverse tread groove, and the first transverse tread grooves on both sides of the tire are connected by a second transverse tread groove. The first transverse tread blocks on both sides of the tire are separated by a first longitudinal tread groove, and the first longitudinal tread groove is connected to the second transverse tread groove. The included angle between the centerlines of the first transverse tread block and the second transverse tread block and the crown centerline is 60-70°, and the included angle between the centerline of the second transverse tread groove and the crown centerline is 40-50°.

[0011] Preferably, the width of the second transverse tread groove is 5-10% of the width of the running surface.

[0012] Preferably, second longitudinal tread grooves are respectively arranged in the middle parts of the first transverse tread block and the second transverse tread block.

[0013] Preferably, the first transverse tread groove, the second transverse tread groove and the first longitudinal tread groove have the same depth and are deeper than the second longitudinal tread groove.

[0014] Preferably, the groove wall angles of the first transverse tread groove, the second transverse tread groove, the first longitudinal tread groove and the second longitudinal tread groove are 5-15°, and the groove bottom is designed with a full arc.

[0015] Preferably, the axial width of the first transverse tread block is 5-10 mm smaller than the axial width of the second transverse tread block, and the first transverse tread block and the second transverse tread block on the same side of the tire are in the same position at the crown center.

[0016] Preferably, heat dissipation grooves are arranged at the position of the second transverse tread block on the shoulder side of the tire.

[0017] Preferably, a number of convex platforms are respectively arranged in the first longitudinal tread groove and the second transverse tread groove, and the convex platforms are connected to the first transverse tread block or the second transverse tread block at the bottom of the tread groove. The width of the convex platform is 10-25 mm, and the height is 10-20 mm.

[0018] Preferably, reinforcing ribs are arranged at the groove bottom of the first transverse tread groove at the shoulder. A circumferential shoulder protection convex platform is arranged at the end of the second transverse tread block at the tire shoulder.

[0019] Preferably, the sum of the volumes of the first transverse tread block and the second transverse tread block accounts for 60-65% of the volume of the running surface. The width of the first transverse tread groove gradually increases from the crown center to the shoulder direction.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. The design of the transverse tread grooves of the tire of the present utility model enables the tire to have better traction performance and improves the grip when the grader is operating; the design of the transverse through tread grooves, the optimized design of the tread groove angle, and the design of gradually increasing the width of the first transverse tread groove make it convenient to discharge the soil in the tread grooves in time when the tire rotates, and can improve the self-cleaning performance.

[0022] 2. The design of the first longitudinal tread groove and the second longitudinal tread groove of the present utility model can improve the anti-skid performance of the tire, and through the optimized design of the tread groove angle and the full-round arc design of the groove bottom, the risk of tire groove bottom cracking can be reduced. In addition, through the design of the heat dissipation grooves, the risk of heat generation and delamination of the tire caused by long-distance and high-speed operation can be reduced.

[0023] 3. The present utility model also further increases the rigidity of the tread blocks and reduces the risk of groove bottom cracks through the design of the convex platforms in the first longitudinal tread groove and the second transverse tread groove, and the reinforcing ribs at the groove bottom of the first transverse tread groove located at the tire shoulder. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural view of the grader tire tread of the present utility model.

[0025] Figure 2 is a schematic structural view of the reinforcing ribs and the tire shoulder protection convex platforms of the present utility model.

[0026] In the figure, 1, the first transverse tread block; 2, the second transverse tread block; 3, the first transverse tread groove; 4, the second transverse tread groove; 5, the first longitudinal tread groove; 6, the second longitudinal tread groove; 7, the heat dissipation groove; 8, the convex platform; 9, the reinforcing rib; 10, the tire shoulder protection convex platform. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to enable those skilled in the art of the present technology to better understand the technical solutions in the present utility model, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model.

[0028] Embodiment 1

[0029] As Figure 1 shown, this embodiment provides a grader tire tread. The first transverse tread blocks 1 and the second transverse tread blocks 2 are alternately arranged on both sides of the tire, and the axial width of the first transverse tread blocks 1 is 5-10 mm smaller than the axial width of the second transverse tread blocks 2, and the positions of the first transverse tread blocks 1 and the second transverse tread blocks 2 on the same side of the tire at the crown center are the same, so that the transverse tread blocks are alternately arranged in the "long-short-long" manner in the circumferential direction of the tire, which can increase the contact area with the ground when the tire is running on muddy roads, improve the grip of the tire, and prevent the tire from slipping.

[0030] AsFigure 1 As shown in the figure, the adjacent transverse tread blocks 1 and 2 on the same side of the tire are separated by a first transverse tread groove 3, and the width of the first transverse tread groove 3 gradually increases from the crown center towards the shoulder direction. The first transverse tread grooves 3 on both sides of the tire are connected by a second transverse tread groove 4, and the width of the second transverse tread groove 4 is 5-10% of the tread width. The adjacent transverse tread blocks 1 on both sides of the tire are separated by a first longitudinal tread groove 5, and the first longitudinal tread groove 5 is connected to the second transverse tread groove 4. Moreover, the depths of the first transverse tread groove 3, the second transverse tread groove 4, and the first longitudinal tread groove 5 are the same, which conforms to the L-5 ultra-deep block tread classification in "GB / T 2980-2018 Specifications, Dimensions, Air Pressure and Load of Construction Machinery Tires", making the product have a relatively long service life. The included angle α between the center lines of the transverse tread block 1 and the transverse tread block 2 and the crown center line is 60-70°, and the included angle β between the center line of the second transverse tread groove 4 and the crown center line is 40-50°.

[0031] The design of the transverse tread grooves in this embodiment enables the tire to have better traction performance and improves the grip when the grader is operating; the design of the transverse through-type tread grooves, the optimized design of the tread groove angles, and the design with the gradually increasing width of the first transverse tread groove 3 make it convenient to discharge the soil in the tread grooves in time when the tire rotates, which can improve the self-cleaning performance. Moreover, in this embodiment, the sum of the volumes of the transverse tread block 1 and the transverse tread block 2 accounts for 60-65% of the tread volume. The tread blocks are designed relatively large and there is no excessive knife groove design, which can improve the rigidity and cut resistance of the tread blocks.

[0032] Embodiment 2

[0033] On the basis of Embodiment 1, as Figure 1 shown in the figure, longitudinal tread grooves 6 are respectively arranged in the middle parts of the transverse tread block 1 and the transverse tread block 2, and the depth of the longitudinal tread groove 6 is less than that of the first longitudinal tread groove 5; the groove wall angles of the first transverse tread groove 3, the second transverse tread groove 4, the first longitudinal tread groove 5, and the longitudinal tread groove 6 are 5-15°, and the groove bottom adopts a full arc design.

[0034] The design of the first longitudinal tread groove 5 and the longitudinal tread groove 6 in this embodiment can improve the anti-skid performance of the tire; and through the optimized design of the tread groove angles and the full arc design of the groove bottom, the risk of tire groove bottom cracking can be reduced.

[0035] Embodiment 3

[0036] On the basis of Embodiment 1, as Figure 1-2 shown in the figure, heat dissipation grooves 7 are arranged at the shoulder side parts of the transverse tread block 2, which play a role in heat dissipation, reduce its heat generation, and thus reduce the risk of heat generation and delamination of the tire during long-distance and high-speed operation.

[0037] Embodiment 4

[0038] Based on Embodiment 1, as Figure 1 shown, a number of bosses 8 are respectively arranged in the longitudinal tread groove 5 and the transverse tread groove 4. The bosses 8 are connected to the first transverse tread block 1 or the second transverse tread block 2 at the bottom of the tread groove; the width of the boss 8 is 10 - 25 mm, and the height is 10 - 20 mm. The boss 8 can function as a reinforcing rib 9, further increasing the rigidity of the tread block and reducing the risk of cracks at the bottom of the groove.

[0039] Embodiment 5

[0040] Based on Embodiment 1, as Figure 2 shown, a reinforcing rib 9 is arranged at the bottom of the transverse tread groove 3 located at the tire shoulder, which can further increase the rigidity of the tread block, reduce the deformation of the tread block, and reduce the risk of cracks at the bottom of the groove; a circumferential shoulder protection boss 10 is arranged at the end of the second transverse tread block 2 at the tire shoulder, which can protect the sidewall part and reduce the probability of sidewall cuts.

Claims

1. The tire pattern of the grader is characterized by: Transverse pattern blocks 1 (1) and transverse pattern blocks 2 (2) are alternately arranged on both sides of the tire, and adjacent transverse pattern blocks 1 (1) and transverse pattern blocks 2 (2) on the same side of the tire are separated by transverse pattern grooves 1 (3), and the transverse pattern grooves 1 (3) on both sides of the tire are connected by transverse pattern grooves 2 (4); the transverse pattern blocks 1 (1) on both sides of the tire are separated by longitudinal pattern grooves 1 (5), and the longitudinal pattern grooves 1 (5) are connected to the transverse pattern grooves 2 (4); the center lines of the transverse pattern blocks 1 (1) and the transverse pattern blocks 2 (2) and the center line of the tread crown are at an angle of 60-70 degrees, and the center line of the transverse pattern grooves 2 (4) and the center line of the tread crown are at an angle of 40-50 degrees.

2. The tire pattern of the motor grader according to claim 1, characterized in that: The width of the second transverse groove (4) is 5-10% of the width of the running surface.

3. The tire pattern of the motor grader according to claim 1, characterized in that: The middle parts of the transverse pattern block 1 (1) and the transverse pattern block 2 (2) are respectively provided with longitudinal pattern groove 2 (6).

4. The tire pattern of the motor grader according to claim 3, characterized in that: The depths of the transverse groove 1 (3), the transverse groove 2 (4) and the longitudinal groove 1 (5) are the same and greater than the longitudinal groove 2 (6).

5. The tire pattern of the motor grader according to claim 3, characterized in that: The groove wall angles of the transverse groove 1 (3), the transverse groove 2 (4), the longitudinal groove 1 (5) and the longitudinal groove 2 (6) are 5-15 degrees, and the groove bottom adopts a full arc design.

6. The tire pattern of the motor grader according to claim 1, characterized in that: The axial width of the transverse pattern block 1 (1) is 5-10 mm smaller than the axial width of the transverse pattern block 2 (2), and the transverse pattern block 1 (1) and the transverse pattern block 2 (2) on the same side of the tire are located at the same position at the center of the crown.

7. The tire pattern of the motor grader according to claim 1, characterized in that: The second transverse pattern block (2) is provided with a heat dissipation groove (7) at the side of the tire shoulder.

8. The tire pattern of the motor grader according to claim 1, characterized in that: A plurality of bosses (8) are respectively arranged in the longitudinal groove 1 (5) and the transverse groove 2 (4), and the bosses (8) are connected to the transverse pattern block 1 (1) or the transverse pattern block 2 (2) at the bottom of the groove; the width of the bosses (8) is 10-25 mm, and the height is 10-20 mm.

9. The tire pattern of the motor grader according to claim 1, characterized in that: A reinforcing rib (9) is arranged at the bottom of the transverse groove 1 (3) at the tire shoulder; and a full-circle shoulder protection boss (10) is arranged at the end of the transverse pattern block 2 (2) at the tire shoulder.

10. The tire pattern of a motor grader according to claim 1, characterized in that: The sum of the volumes of the transverse pattern block 1 (1) and the transverse pattern block 2 (2) accounts for 60-65% of the volume of the running surface; the width of the transverse pattern groove 1 (3) gradually increases from the crown to the shoulder direction.

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