Tire for a dual-purpose truck

Abstract

The utility model provides a guide tow dual -purpose truck tire belongs to tire technical field, including the tread, the tread includes a plurality of middle part longitudinal grooves and edge part longitudinal grooves which are set up along the circumferential extension, the middle part longitudinal groove and edge part longitudinal groove divide the tread into a plurality of pattern bars, the pattern bar includes the middle part pattern bar at the tread center line, a plurality of oblique through -going horizontal grooves are set up on the middle part pattern bar, the third horizontal steel sheet of horizontal through -going is set up between adjacent horizontal grooves, wherein, the angle of horizontal groove and tire axial is 40 ~ 45 DEG, the depth of horizontal groove is 1 / 3 ~ 1 / 5 of the depth of middle part longitudinal groove, the width of horizontal groove is 1mm ~ 4mm. The utility model tire product considers high load, torsion resistance, wear resistance, steering nimble and stronger ground adaptability simultaneously, improves the engagement performance and tow performance of tire on the wet and slippery road surface.

Description

Technical Field

[0001] This utility model belongs to the field of tire technology, and in particular relates to a dual-purpose (guide and tractor) heavy-duty vehicle tire. Background Technology

[0002] Dual-purpose (guide-and-tow) tires need to possess both guiding and towing capabilities, and are mainly used on vehicles such as container trucks, port flatbed trailers, and airport tractors. Their tread pattern design requires comprehensive consideration of various factors, including the vehicle's specific operating conditions, load requirements, durability, and the usability of the tread pattern. However, existing dual-purpose tires suffer from limitations in achieving a complete balance between guiding and towing performance, have limited tread groove designs, and their guiding performance cannot meet the adaptation requirements of guide wheels. Utility Model Content

[0003] 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.

[0004] This utility model proposes a dual-purpose (guide and tow) heavy-duty vehicle tire, which solves the problems of existing dual-purpose tires that cannot fully balance guiding and towing performance, have limited tread groove designs, and whose guiding performance cannot meet the product's adaptation requirements on the guide wheel. It can ensure that the tire product simultaneously has high load capacity, torsional resistance, wear resistance, flexible steering, and strong ground adaptability, with good steering stability and lateral grip, and improves the tire's bite performance and towing performance on wet and slippery roads.

[0005] This utility model discloses a dual-purpose (guide and tractor) heavy-duty vehicle tire, including a tread. The tread includes a plurality of central longitudinal grooves and edge longitudinal grooves extending circumferentially. The central longitudinal grooves and edge longitudinal grooves divide the tread into a plurality of tread ribs. The tread ribs include a central tread rib located at the center line of the tread. A plurality of inclined transverse grooves are arranged at intervals on the central tread ribs. A transversely connected third transverse steel piece is arranged between adjacent transverse grooves. The angle between the transverse grooves and the tire axis is 40°~45°. The depth of the transverse grooves is 1 / 3~1 / 5 of the depth of the central longitudinal grooves. The width of the transverse grooves is 1mm~4mm.

[0006] In some embodiments, the tread reinforcement further includes an inner shoulder tread reinforcement located on the inner side of the tread, an outer shoulder tread reinforcement located on the outer side of the tread, an inner edge tread reinforcement located between the inner shoulder tread reinforcement and the middle tread reinforcement, and an outer edge tread reinforcement located between the outer shoulder tread reinforcement and the middle tread reinforcement. The width W1 of the inner shoulder tread reinforcement is equal to the width W5 of the outer shoulder tread reinforcement, the width W2 of the inner edge tread reinforcement is equal to the width W4 of the outer edge tread reinforcement, the width W1 of the inner shoulder tread reinforcement is greater than the width W2 of the inner edge tread reinforcement, and the width W2 of the inner edge tread reinforcement is greater than the width W3 of the middle tread reinforcement.

[0007] In some embodiments, the width W1 of the inner shoulder rib and the width W2 of the inner side rib satisfy W1:W2=(1.2~1.4):1.

[0008] In some embodiments, multiple first transverse steel plates in a zigzag shape are spaced apart on the inner edge patterned ribs, and the first transverse steel plates divide the inner edge patterned ribs into multiple small inner patterned blocks in a Z-shape; multiple second transverse steel plates in a zigzag shape are spaced apart on the outer edge patterned ribs, and the second transverse steel plates divide the outer edge patterned ribs into multiple small outer patterned blocks in a Z-shape.

[0009] In some embodiments, both the first transverse steel sheet and the second transverse steel sheet are 3D steel sheets, wherein the depth of the first transverse steel sheet is 1 / 3 to 1 / 5 of the depth of the central longitudinal groove, and the width of the first transverse steel sheet is 0.6mm to 1mm; the depth of the second transverse steel sheet is 1 / 3 to 1 / 5 of the depth of the central longitudinal groove, and the width of the second transverse steel sheet is 0.6mm to 1mm.

[0010] In some embodiments, the central longitudinal groove is a straight structure, and the bottom of the central longitudinal groove is formed by alternating connection of the first groove bottom section and the second groove bottom section along the length of the central longitudinal groove. The connection between adjacent first groove bottom sections and second groove bottom sections is connected by a rounded transition. The included angle α between the two side walls of the first groove bottom section is 36°~38°, and the included angle β between the two side walls of the second groove bottom section is 33°~35°.

[0011] In some embodiments, the side longitudinal grooves are straight structures, the width of the side longitudinal grooves is smaller than the width of the central longitudinal grooves, and the groove wall angle of the side longitudinal grooves is 12°~15°.

[0012] In some embodiments, the bottom of the longitudinal groove on the side is provided with a plurality of stone protrusions at intervals, adjacent stone protrusions are connected by a first fine groove, and the side of the stone protrusions and the groove wall of the longitudinal groove on the side form an arc transition.

[0013] In some embodiments, the height of the projectile protrusion is 1.6mm to 3.5mm, and the spacing between adjacent projectile protrusions is 3mm to 4mm.

[0014] In some embodiments, the projectile protrusions include circular projectile protrusions and rounded rectangular projectile protrusions, with two circular projectile protrusions spaced apart between every two rounded rectangular projectile protrusions.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) The tread of the tire of this utility model is divided into multiple tread ribs by longitudinal grooves, which can provide excellent guiding performance and low rolling resistance performance; by adding transverse grooves on the middle tread ribs, it provides some grip, solves the problem of high heat generation during driving, and ensures that the tire product can simultaneously take into account high load, torsion resistance, wear resistance, flexible steering, strong ground adaptability, and optimize the ground pressure distribution to avoid uneven wear caused by alternating guidance and dragging; improve the tire's biting performance and dragging performance on wet and slippery roads.

[0017] (2) By setting the width of the tread pattern ribs, this utility model optimizes the steering flexibility of the tire and makes the tire product have a higher degree of guiding performance.

[0018] (3) By setting 3D steel sheets in the shape of broken lines on the inner side tread ribs and the outer shoulder tread ribs, the present invention can provide interlaced forces between the tire treads, thereby effectively improving the wet grip performance of the tire, improving the tire's gripping performance and drag on wet and slippery roads; the 3D steel sheets divide the inner side tread ribs and the outer side tread ribs into multiple Z-shaped tread blocks, which can balance the lateral and longitudinal grip forces to provide steering traction.

[0019] (4) The bottom of the longitudinal groove in the middle of this utility model is designed with a variable angle, so that the angle of the groove wall changes at different positions, which can effectively prevent cracks caused by foreign objects in the groove bottom; by setting stone protrusions at the bottom of the longitudinal groove on the side, tire failures such as groove cracks and tire damage can be effectively reduced, thereby improving the safety performance of the tire during use. Attached Figure Description

[0020] 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:

[0021] Figure 1 This is a schematic diagram of the tread pattern of a dual-purpose (guide and tractor) heavy-duty vehicle tire provided in an embodiment of the present utility model.

[0022] Figure 2 for Figure 1 Sectional view at point AA;

[0023] Figure 3 for Figure 1 Sectional view at point BB;

[0024] Figure 4 for Figure 1 A cross-sectional view of the protrusion of the stone that was hit by the bullet;

[0025] In the attached diagram: 1. Longitudinal groove at the edge; 11. Pebble protrusion; 12. First fine groove; 2. Longitudinal groove in the middle; 3. Patterned rib on the inner shoulder; 4. Patterned rib on the inner edge; 41. First transverse steel plate; 5. Patterned rib in the middle; 51. Third transverse steel plate; 52. Transverse groove; 6. Patterned rib on the outer edge; 61. Second transverse steel plate; 7. Patterned rib on the outer shoulder. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] This utility model embodiment provides a dual-purpose (guided and towed) heavy-duty vehicle tire. Figure 1 This is a schematic diagram of the tread pattern of a dual-purpose (guide and tractor) heavy-duty truck tire according to an embodiment of the present invention. (Reference) Figure 1As shown, the present invention relates to a dual-purpose (guided and towed) heavy-duty vehicle tire, which includes a tread. The tread includes four longitudinal grooves extending circumferentially along the tread. Each longitudinal groove includes a central longitudinal groove 2 located on either side of the tread centerline and an edge longitudinal groove 1 between each central longitudinal groove 2 and the tire sidewall. The central longitudinal grooves 2 and the edge longitudinal grooves 1 divide the tread into multiple tread ribs. These tread ribs, from the inner to the outer side of the tread, include an inner shoulder tread rib 3, an inner edge tread rib 4, a central tread rib 5, an outer edge tread rib 6, and an outer shoulder tread rib 7. Multiple inclined transverse grooves 52 are evenly arranged on the central tread rib 5. The angle between the transverse grooves 52 and the tire axis is 40°~45°, and the depth of the transverse grooves 52 is 1 / 3~1 / 5 of the depth of the central longitudinal grooves 2. This invention addresses the issue of high heat generation during driving by adding lateral grooves 52, ensuring that the tire product simultaneously maintains both rigidity and flexibility. The lateral grooves 52 evenly divide the central tread rib 5 into tread blocks of different pitches, optimizing the distribution of ground pressure, improving driving traction and steering agility, and enhancing the water drainage performance of the tire tread surface. Preferably, the depth of the lateral grooves 52 is 1 / 5 of the depth of the central longitudinal groove 2, and the width of the lateral grooves 52 is 1mm to 4mm.

[0029] A third lateral steel strip 51 is provided between adjacent lateral grooves 52. The third lateral steel strip 51 has an S-shaped structure, and its width is equal to that of the first lateral steel strip 41. The width of the third lateral steel strip 51 is 0.6mm to 1mm, and its depth is 2mm to 3.5mm. Preferably, the depth of the third lateral steel strip 51 is 2mm. The third lateral steel strip 51 serves as a decorative pattern, making the tread pattern more integrated. The third lateral steel strip 51, in conjunction with the lateral grooves 52, improves the water drainage performance of the tire tread surface, enhancing the tire's grip and drag performance on wet roads.

[0030] In this invention, the widths W1 of the inner shoulder tread rib 3, W2 of the inner side tread rib 4, W3 of the middle tread rib 5, W4 of the outer side tread rib 6, and W5 of the outer shoulder tread rib 7 satisfy the following relationships: the width W1 of the inner shoulder tread rib 3 is equal to the width W5 of the outer shoulder tread rib 7; the width W2 of the inner side tread rib 4 is equal to the width W4 of the outer side tread rib 6; the width W1 of the inner shoulder tread rib 3 is greater than the width W2 of the inner side tread rib 4; and the width W2 of the inner side tread rib 4 is greater than the width W3 of the middle tread rib 5, i.e., W1=W5>W2=W4>W3; the inner shoulder tread rib 3 and the outer shoulder tread rib 7 are the widest and have no tread decoration, and the smooth tread ribs are beneficial to reducing the rolling resistance value of the tread. The width W1 of the inner shoulder tread rib 3 and the width W2 of the inner side tread rib 4 satisfy W1:W2=(1.2~1.4):1. By setting the width of the tread ribs as described above, the steering flexibility of the tire is optimized, giving the tire product a higher degree of directional performance.

[0031] In this invention, multiple first transverse steel sheets 41 in a zigzag shape are evenly arranged on the inner edge patterned rib 4. These first transverse steel sheets 41 divide the inner edge patterned rib 4 into multiple Z-shaped inner small patterned blocks. The depth of each first transverse steel sheet 41 is 1 / 3 to 1 / 5 of the depth of the central longitudinal groove 2, and the width of each first transverse steel sheet 41 is 0.6 mm to 1 mm. Preferably, the depth of each first transverse steel sheet 41 is 1 / 5 of the depth of the central longitudinal groove 2, and the width of each first transverse steel sheet 41 is 0.8 mm. Preferably, the first transverse steel sheets 41 have a Z-shaped structure. Multiple second transverse steel plates 61 are evenly arranged on the outer shoulder patterned rib 7. The second transverse steel plates 61 divide the outer edge patterned rib 7 into multiple Z-shaped outer small patterned blocks. The structure of the second transverse steel plates 61 is the same as that of the first transverse steel plate 41. The depth of the second transverse steel plate 61 is 1 / 3 to 1 / 5 of the depth of the central longitudinal groove 2, and the width of the second transverse steel plate 61 is 0.6 mm to 1 mm. In one embodiment, both the first transverse steel plate 41 and the second transverse steel plate 61 are 3D steel plates. This invention utilizes 3D steel sheets arranged in a zigzag pattern on the inner edge tread ribs 4 and the outer shoulder tread ribs 7 to provide interlaced forces between tire treads, thereby effectively improving the tire's wet grip performance, as well as its grip and drag on wet roads. The 3D steel sheets divide the inner edge tread ribs 4 and the outer edge tread ribs 6 into multiple Z-shaped tread blocks, which can balance lateral and longitudinal grip forces to provide steering traction.

[0032] In this invention, the central longitudinal groove 2 has a straight structure, and the bottom of the central longitudinal groove 2 has a variable angle design. The bottom of the central longitudinal groove 2 is formed by alternating connection of a first groove bottom section and a second groove bottom section along the length direction of the central longitudinal groove 2. The connection between adjacent first groove bottom sections and second groove bottom sections is achieved through a rounded transition. (See attached diagram) Figure 2 and attached Figure 3 As shown, the bottom angle α of the first groove section AA is 36°~38°, and the bottom angle β of the second groove section BB is 33°~35°. Through the variable angle design, the angle of the groove wall can vary at different positions, effectively preventing cracks caused by foreign objects trapped in the groove bottom. The width of the edge longitudinal groove 1 is smaller than the width of the middle longitudinal groove 2. The edge longitudinal groove 1 has a straight structure, and the groove wall angle of the edge longitudinal groove 1 is set to 12°~15°, preferably 14°. Multiple stone protrusions 11 are embedded at intervals in the bottom of the edge longitudinal groove 1. Adjacent stone protrusions 11 are connected by a first fine groove 12 with a width of 1mm. The stone protrusions 11 include circular stone protrusions and rounded rectangular stone protrusions. The arrangement of the stone protrusions 11 is that two circular stone protrusions are set between every two rounded rectangular stone protrusions. In one embodiment, the height h of the pumice protrusion 11 is set to 1.6mm~3.5mm, preferably 3mm; the spacing between adjacent pumice protrusions 11 is 3mm~4mm. The side of the pumice protrusion 11 transitions to the groove wall of the longitudinal groove 1 with an arc, the radius of which is R=0.5mm~2mm, preferably R=0.5mm. By setting pumice protrusions 11 at the bottom of the longitudinal groove 1, this invention can effectively reduce tire failures such as tread cracking and tire body damage, thereby improving the safety performance of the tire during use.

[0033] This utility model of a dual-purpose (guided and towed) heavy-duty vehicle tire is suitable for low-speed, high-load, and frequently starting / stopping road sections such as container transshipment at docks, as well as complex road surfaces such as airport runway shuttles and warehouse ramps, accommodating both paved and lightly unpaved surfaces. Compared to traditional tire tread designs, this utility model's tire tread balances high load capacity, torsional resistance, wear resistance, steering flexibility, and strong ground adaptability. The four longitudinal grooves provide excellent guidance and low rolling resistance. Transverse steel plates divide the inner and outer edge tread ribs into multiple Z-shaped patterns. The tread blocks balance lateral and longitudinal grip to provide steering traction; by adding lateral grooves 52 to the central tread ribs 5, some grip is provided, solving the problem of high heat generation during driving, ensuring that the tire product simultaneously takes into account high load, torsion resistance, wear resistance, steering flexibility and strong ground adaptability, and also optimizes the ground pressure distribution to avoid uneven wear caused by alternating guidance and dragging; the lateral grooves 52 cooperate with the third lateral steel sheet 51 to provide drainage performance of the tire tread surface, improving the tire's bite performance and drag performance on wet and slippery roads.

[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 dual-purpose (guided and towed) heavy-duty vehicle tire, characterized in that: The tire includes a tread, which comprises multiple central longitudinal grooves and edge longitudinal grooves extending circumferentially. The central and edge longitudinal grooves divide the tread into multiple tread ribs. The tread ribs include a central tread rib located at the center line of the tread. Multiple inclined transverse grooves are spaced apart on the central tread ribs. A transversely connected third transverse steel strip is provided between adjacent transverse grooves. The angle between the transverse grooves and the tire axial direction is 40° to 45°. The depth of the transverse grooves is 1 / 3 to 1 / 5 of the depth of the central longitudinal grooves. The width of the transverse grooves is 1 mm to 4 mm.

2. The dual-purpose (guided and towed) heavy-duty vehicle tire according to claim 1, characterized in that: The tread pattern also includes the inner shoulder tread pattern located on the inner side of the tread, the outer shoulder tread pattern located on the outer side of the tread, the inner edge tread pattern located between the inner shoulder tread pattern and the middle tread pattern, and the outer edge tread pattern located between the outer shoulder tread pattern and the middle tread pattern. The width W1 of the inner shoulder tread pattern is equal to the width W5 of the outer shoulder tread pattern, the width W2 of the inner edge tread pattern is equal to the width W4 of the outer edge tread pattern, the width W1 of the inner shoulder tread pattern is greater than the width W2 of the inner edge tread pattern, and the width W2 of the inner edge tread pattern is greater than the width W3 of the middle tread pattern.

3. The dual-purpose (guided and towed) heavy-duty vehicle tire according to claim 2, characterized in that; The width W1 of the inner shoulder rib and the width W2 of the inner side rib satisfy W1:W2=(1.2~1.4):

1.

4. The dual-purpose (guided and towed) heavy-duty vehicle tire according to claim 2, characterized in that: Multiple first transverse steel plates in a zigzag shape are spaced apart on the inner edge patterned ribs, dividing the inner edge patterned ribs into multiple Z-shaped inner small patterned blocks; multiple second transverse steel plates in a zigzag shape are spaced apart on the outer edge patterned ribs, dividing the outer edge patterned ribs into multiple Z-shaped outer small patterned blocks.

5. The dual-purpose (guided and towed) heavy-duty vehicle tire according to claim 4, characterized in that: Both the first and second transverse steel sheets are 3D steel sheets. The depth of the first transverse steel sheet is 1 / 3 to 1 / 5 of the depth of the central longitudinal groove, and the width of the first transverse steel sheet is 0.6 mm to 1 mm. The depth of the second transverse steel sheet is 1 / 3 to 1 / 5 of the depth of the central longitudinal groove, and the width of the second transverse steel sheet is 0.6 mm to 1 mm.

6. The dual-purpose (guided and towed) heavy-duty vehicle tire according to claim 1, characterized in that: The central longitudinal trench has a straight structure. The bottom of the central longitudinal trench is formed by the alternating connection of the first trench bottom section and the second trench bottom section along the length of the central longitudinal trench. The connection between adjacent first trench bottom sections and second trench bottom sections is connected by a rounded transition. The included angle α between the two side walls of the first trench bottom section is 36°~38°, and the included angle β between the two side walls of the second trench bottom section is 33°~35°.

7. The dual-purpose (guided and towed) heavy-duty vehicle tire according to claim 1, characterized in that: The longitudinal grooves on the sides are straight lines, and the width of the longitudinal grooves on the sides is smaller than that of the longitudinal grooves in the middle. The angle of the groove walls of the longitudinal grooves on the sides is 12° to 15°.

8. The dual-purpose (guided and towed) heavy-duty vehicle tire according to claim 1, characterized in that: Multiple stone protrusions are spaced apart at the bottom of the longitudinal groove on the side. Adjacent stone protrusions are connected by a first narrow groove, and the side of the stone protrusions transitions to the wall of the longitudinal groove on the side in an arc.

9. The dual-purpose (guided and towed) heavy-duty vehicle tire according to claim 8, characterized in that: The height of the protruding stones is 1.6mm to 3.5mm, and the distance between adjacent protruding stones is 3mm to 4mm.

10. The dual-purpose (guided and towed) heavy-duty vehicle tire according to claim 8, characterized in that: The projectile protrusions include circular projectile protrusions and rounded rectangular projectile protrusions, with two circular projectile protrusions spaced apart between every two rounded rectangular projectile protrusions.

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