Middle and short distance tire
By designing zigzag lateral tread grooves, adding bouncing stones and reinforcing ribs on short- and medium-range tires, the problems of tread block breakage and chipping have been solved, improving the tire's anti-chipping performance and grip, extending its service life and reducing costs.
Patent Information
- Application Number
- CN202423066091.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing short- and medium-range tires are prone to problems such as tread block chipping and breakage under high-load conditions, leading to abnormal wear and reduced service life.
Multiple sets of transverse tread blocks are designed and spaced along the circumference of the tire tread. The transverse tread grooves have a zigzag structure with gradually changing groove wall angles. Stone blocks are placed at the bottom of the grooves. The area of the middle tread blocks is larger than that of the edge tread blocks. Shallow steel plates are placed on the edge tread blocks. The longitudinal tread grooves adopt a reinforcing rib design to enhance rigidity.
It improves the tire's resistance to chipping and chipping, as well as its grip, increases its service life, and reduces operating costs.
Smart Images
Figure CN223508020U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tire technology, and in particular relates to a medium- and short-distance tire suitable for the drive wheel position of heavy-duty trucks. Background Technology
[0002] Tires are a crucial component of vehicles. As the only part in contact with the road surface, they bear the vehicle's load, transmit driving and braking forces to the road, cushion and absorb shocks, and maintain and change the vehicle's direction of travel. The tire tread pattern directly affects the vehicle's performance and driving safety. Medium- and short-haul tires are commonly used in truck transportation, operating on both paved and unpaved roads, making their use in complex environments and placing high demands on tire performance.
[0003] Tires used in 8x4 trucks, commonly used for short- and medium-distance transportation, predominantly feature block tread patterns. Since these vehicles primarily transport urban waste and gravel, requiring them to access construction sites, the road conditions are mostly mixed, with paved surfaces and some unpaved areas. This necessitates tires providing strong driving force, braking force, traction, grip, wear resistance, and excellent heat dissipation to meet the performance demands of various operating conditions. The characteristic of block tread patterns on short- and medium-distance tires is that the tread grooves on the tire surface are interconnected, forming independent tread block structures. These tread blocks are typically distributed on the tire tread in block or block-block combination form. While current block tread patterns offer good heat dissipation, under high-load conditions, issues such as tread block chipping and breakage can occur, leading to abnormal wear and reduced tire lifespan.
[0004] Therefore, while ensuring the basic performance of tires, further improving their resistance to chipping and chipping, as well as their grip performance, thereby increasing tire lifespan, has become a problem that needs to be solved by those skilled in the art. Utility Model Content
[0005] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects and advantages of the present application more readily apparent.
[0006] This utility model proposes a medium-to-short-range tire that solves the technical problem that existing medium-to-short-range tires with block patterns will experience defects such as tread block chipping and breakage under high-load conditions, resulting in abnormal wear and reduced tire life. It has excellent anti-chipping and breakage performance and grip performance, good heat dissipation and grip, improves tire life and reduces tire usage costs.
[0007] This utility model discloses a medium- and short-range tire, including multiple sets of transverse tread blocks spaced apart along the circumference of the tire tread. Transverse tread grooves are provided between each pair of adjacent transverse tread block sets. The transverse tread grooves have a zigzag structure, and the included angle of the sidewall at the bend of the transverse tread groove is rounded. The angle of the groove wall on the convex side of the transverse tread groove is 1.5°-2.5° larger than the angle of the groove wall on the concave side.
[0008] In some embodiments, the lateral tread grooves include a first lateral tread groove located on the left side of the tread and a second lateral tread groove located on the right side of the tread. The first lateral tread groove and the second lateral tread groove are centrally symmetrical and connected by a third lateral tread groove with a straight structure.
[0009] In some embodiments, multiple pebble blocks are spaced apart at the bottom of the transverse tread grooves, and the pebble blocks near the centerline of the tread are cylindrical.
[0010] In some embodiments, the lateral tread block group includes edge tread blocks located on both sides of the tire shoulder and two central tread blocks located in the middle of the tread. Both the edge tread blocks and the central tread blocks are irregular polygonal structures, and the area of the central tread blocks is larger than the area of the edge tread blocks.
[0011] In some embodiments, the area ratio of the central patterned block to the edge patterned block is (1.13-1.15):1.
[0012] In some embodiments, the edge patterned blocks are provided with several edge shallow steel sheets arranged in a matrix.
[0013] In some embodiments, a longitudinal pattern groove is provided between adjacent edge pattern blocks and middle pattern blocks in the same horizontal pattern block group, and a longitudinal pattern groove is provided between two adjacent middle pattern blocks, and the width of the longitudinal pattern groove is greater than the width of the longitudinal pattern groove.
[0014] In some embodiments, the longitudinal grooves at the edges are straight lines, while the longitudinal grooves in the middle are curved.
[0015] In some embodiments, the longitudinal patterned groove on the edge is provided with a first reinforcing rib, the height of which is less than 1 / 3 of the depth of the longitudinal patterned groove on the edge.
[0016] In some embodiments, a second reinforcing rib is provided in the central longitudinal groove, and the height of the second reinforcing rib is 1 / 2 to 2 / 3 of the depth of the central longitudinal groove.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] (1) The transverse tread groove between adjacent transverse tread groups of the short-distance tire of this utility model is a zigzag structure, and the inclination angle of the groove walls on both sides is different, which can improve the abnormal wear caused during tire use; multiple stone blocks are set at intervals at the bottom of the transverse tread groove, and the stone blocks near the center line of the tread are cylindrical structures, which avoids the problem of stones being stuck because the innermost part of the tread groove cannot be filled with normal-sized stone blocks due to the narrow bottom width of the groove and the interference of the tread groove angle.
[0019] (2) The area of the central tread block of the short-distance tire of this utility model is larger than that of the edge tread block, which is conducive to improving the ground pressure distribution of the tread block and reducing the abnormal wear of the tread block.
[0020] (3) The edge pattern blocks of the short-distance tire of this utility model are provided with several edge shallow steel pieces arranged in a matrix, which increases the aesthetics and can also puncture the water film on the road surface in actual use, increase the tire grip performance and reduce tire sideslip.
[0021] (4) The longitudinal tread grooves on the side of the short-distance tire of this utility model adopt a straight groove structure, which can avoid the tread blocks having too many sharp corners and avoid the sharp corners from chipping, deformed wear and other defects in actual use; the longitudinal tread grooves on the side adopt a reinforcing rib design with a lower height, which can increase the rigidity of the tread blocks, reduce the bending deformation of the tread, and reduce heat generation.
[0022] (5) The longitudinal tread groove in the middle of the short-distance tire of this utility model is a short straight structure, which avoids the abnormal wear of the sharp angle of the tread block due to the short tread groove and large bending angle; the longitudinal tread groove in the middle adopts a high reinforcing rib design, which is conducive to increasing the rigidity of the tread in the crown and reducing the defects such as tread block falling off and chipping during use. Attached Figure Description
[0023] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with their descriptions, serve to explain the present invention and do not constitute an undue limitation thereof. Wherein:
[0024] Figure 1 This is a structural schematic diagram of a short-to-medium range tire provided in an embodiment of the present invention;
[0025] Figure 2 This is a cross-sectional view of the transverse tread groove A-A' of a medium- and short-distance tire provided in an embodiment of this utility model;
[0026] In the attached diagram: 1. Horizontal patterned groove, 11. First horizontal patterned groove, 12. Second horizontal patterned groove, 13. Third horizontal patterned groove, 2. Central patterned block, 3. Edge patterned block, 4. Central longitudinal patterned groove, 5. Edge longitudinal patterned groove, 6. Pebbles, 7. Central fine groove, 8. Edge shallow steel sheet. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0028] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "upper," "lower," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," and "third" may explicitly or implicitly include one or more of that feature. The term "longitudinal" refers to the direction in which the tire rolls; the term "lateral" refers to the direction perpendicular to the mid-surface of the tire.
[0029] This utility model provides a medium-to-short-range tire suitable for the drive wheels of heavy-duty trucks. It has excellent anti-chipping and anti-scraping performance and grip performance, good heat dissipation and grip, extends tire service life, and reduces tire usage costs. Figure 1 This is a structural schematic diagram of a short-to-medium range tire according to an embodiment of the present utility model, with reference to... Figure 1 As shown, the tread pattern of this medium- and short-range tire is mainly composed of four block patterns, supplemented by longitudinal grooves, and is used for driving wheel positions.
[0030] In this embodiment of the invention, the short-distance tire includes multiple sets of transverse tread blocks spaced circumferentially along the tread surface, with transverse tread grooves 1 provided between each pair of adjacent transverse tread block sets. The transverse tread grooves 1 have a zigzag structure, and the angle between the sidewall of the transverse tread groove 1 at the bend and the adjacent tread block is rounded. The transverse tread groove 1 is narrower in the middle and gradually widens towards both sides. The angle of the groove wall on the convex side of the transverse tread groove 1 is greater than the angle of the groove wall on the concave side. (Refer to the attached diagram.) Figure 2 As shown, in a preferred embodiment, the angle β of the groove wall on the convex side of the transverse pattern groove 1 is 1.5°-2.5° larger than the angle α of the groove wall on the concave side.
[0031] This design improves the uneven wear caused by varying tire flexing deformation upon contact with the ground due to different tread groove angles. Multiple pebble blocks 6 are spaced apart at the bottom of the lateral tread groove 1. Because the inner bottom of the lateral tread groove 1 is narrow and interferes with the groove's inclination angle, it's impossible to add normal pebble blocks. The pebble blocks 6 near the tread centerline are designed as cylindrical structures to avoid the problem of stones getting stuck due to insufficient distance between the pebble blocks 6 and the groove wall of the lateral tread groove 1. The lateral tread groove 1 includes a first lateral tread groove 11 located on the left side of the tread and a second lateral tread groove 12 located on the right side of the tread. The first lateral tread groove 11 extends to the left shoulder, and the second lateral tread groove 12 extends to the right shoulder. The first lateral tread groove 11 and the second lateral tread groove 12 are centrally symmetrical and both have a zigzag structure. The first lateral tread groove 11 and the second lateral tread groove 12 are connected by a third lateral tread groove 13. The third lateral groove 13 is a shorter straight-line structure, which can avoid the large bending angle and small sharp angle of the tread blocks caused by the shorter tread groove, which can cause problems such as abnormal wear and chipping of the tread blocks during tire use.
[0032] In this embodiment of the invention, the lateral tread block group of the short-distance tire includes edge tread blocks 3 located on both sides of the tire shoulders and two central tread blocks 2 located between the two edge tread blocks 3. Both the edge tread blocks 3 and the central tread blocks 2 are irregular polygonal structures, and the area of the central tread blocks 2 is larger than that of the edge tread blocks 3. This is beneficial for improving the ground pressure distribution of the tread blocks and reducing abnormal wear. In a preferred embodiment, the area ratio of the central tread blocks 2 to the edge tread blocks 3 is (1.13-1.15):1. By appropriately increasing the area of the central tread blocks 2, the abnormal tire wear caused by the greater ground pressure of the central tread blocks 2 compared to the edge tread blocks 3 can be reduced. In a preferred embodiment, an L-shaped central fine groove 7 is provided on the central tread block 2, and several shallow steel strips 8 with a depth of 1mm are provided on the side tread blocks 3 located on both sides of the tire shoulder in a matrix arrangement of transverse and longitudinal directions. During tire use, these strips can pierce the water film on the road surface, increase tire grip performance, reduce tire sideslip, and also enhance the aesthetics.
[0033] In this embodiment of the invention, a longitudinal tread groove 5 is provided between adjacent edge tread blocks 3 and middle tread blocks 2 in the same lateral tread block group of the short-distance tire. A longitudinal tread groove 4 is provided between two middle tread blocks 2 located in the middle of the tread, and the width of the edge longitudinal tread groove 5 is greater than the width of the middle longitudinal tread groove 4. The edge longitudinal tread groove 5 is a straight groove structure, which can avoid too many sharp corners of the tread blocks and prevent defects such as chipping and deformed wear of the sharp corners of the tread blocks during tire use. The edge longitudinal tread groove 5 is provided with a first reinforcing rib, which can increase the rigidity of the tread blocks, reduce the bending deformation of the tread blocks, and reduce heat generation. Considering that the ground pressure of the edge tread block 3 is less than that of the middle tread block 2, and that there is a problem of heat accumulation in the tire shoulder area, the height of the first reinforcing rib is less than 1 / 3 of the depth of the edge longitudinal tread groove 5. The central longitudinal tread groove 4 has a curved structure to prevent the tread blocks from developing small sharp angles due to short grooves and large bends, thus avoiding abnormal wear at the sharp angles of the tread blocks. A second reinforcing rib is incorporated into the central longitudinal tread groove 4 to provide good anti-skid performance. Since the central tread block 2 undergoes greater flexural deformation than the edge tread blocks 3 when the tire contacts the ground, the second reinforcing rib is positioned at 1 / 2 to 2 / 3 of the depth of the central longitudinal tread groove 4 to reduce deformation, increase the rigidity of the central tread block 2, and minimize tread block breakage and chipping during use.
[0034] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. A medium-to-short-range tire, characterized in that: It includes multiple sets of transverse tread blocks spaced circumferentially along the tread surface. Transverse tread grooves are set between each pair of adjacent transverse tread blocks. The transverse tread grooves have a zigzag structure, and the included angle of the sidewall at the bend of the transverse tread groove is rounded. The angle of the groove wall on the convex side of the transverse tread groove is 1.5°-2.5° larger than the angle of the groove wall on the concave side.
2. The medium- and short-range tire according to claim 1, characterized in that: The lateral tread grooves include a first lateral tread groove located on the left side of the tread and a second lateral tread groove located on the right side of the tread. The first lateral tread groove and the second lateral tread groove are centrally symmetrical and connected by a third lateral tread groove with a straight structure.
3. The medium- and short-range tire according to claim 1, characterized in that: Multiple paving stones are spaced apart at the bottom of the transverse tread grooves, and the paving stones near the center line of the tread are cylindrical.
4. The medium- and short-range tire according to claim 1, characterized in that: The lateral tread block group includes edge tread blocks located on both sides of the tire shoulder and two central tread blocks located in the middle of the tread. Both the edge tread blocks and the central tread blocks are irregular polygonal structures, and the area of the central tread blocks is larger than that of the edge tread blocks.
5. The medium- and short-range tire according to claim 4, characterized in that: The area ratio of the central patterned block to the edge patterned block is (1.13-1.15):
1.
6. The medium- and short-range tire according to claim 4, characterized in that: Several shallow steel sheets are arranged in a matrix on the edge patterned blocks.
7. The medium- and short-range tire according to claim 4, characterized in that: In the same horizontal pattern block group, a longitudinal pattern groove is set between adjacent edge pattern blocks and middle pattern blocks, and a longitudinal pattern groove is set between two adjacent middle pattern blocks, and the width of the longitudinal pattern groove is greater than the width of the longitudinal pattern groove.
8. The medium- and short-range tire according to claim 7, characterized in that: The longitudinal grooves on the edges are straight, while the longitudinal grooves in the middle are curved.
9. The medium- and short-range tire according to claim 7, characterized in that: The longitudinal patterned groove on the edge is provided with a first reinforcing rib, the height of which is less than 1 / 3 of the depth of the longitudinal patterned groove on the edge.
10. The medium- and short-range tire according to claim 7, characterized in that: A second reinforcing rib is provided in the longitudinal groove in the middle, and the height of the second reinforcing rib is 1 / 2 to 2 / 3 of the depth of the longitudinal groove in the middle.