All-wheel-position high-mileage tire pattern blocks, pattern ribs and tread patterns special for medium-short-distance heavy loads
Through the step design of the fine steel sheet groove and the deep steel sheet groove and the optimization of the groove parameters and position, the problem of difficult tread patterns in the prior art to take into account strong driving, high mileage and anti-stone clamping, achieving more uniform wear and higher mileage, and at the same time, the anti-slot cracking and anti-stone clamping performance is enhanced.
Patent Information
- Application Number
- CN202510500315.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2025-06-13
AI Technical Summary
It is difficult to design a high-mileage tread pattern for medium and short-distance heavy loads, which has the characteristics of strong driving, high mileage, anti-blocking block wear unevenness, anti-stone stone, and meeting heavy-load transportation needs.
The step-type design of fine steel sheet grooves and deep steel sheet grooves is adopted, combined with the design of groove parameters and locations, the area of the pattern block is increased, the design angle of shoulder grooves and pattern grooves is designed, and the resistance to cracking and stone clamping is enhanced.
It achieves stronger driving force, more uniform wear, increased pattern saturation by 10%, product mileage by 10% year-on-year, and has the performance of anti-trough cracking and anti-stone.
Smart Images
Figure CN120134846A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an all-wheel position tire for a load-carrying vehicle, and in particular to a pattern block, a pattern rib and a tread pattern of an all-wheel position high-mileage tire specially used for medium- and short-distance heavy loads. Background Art
[0002] The design of the pattern has a huge impact on the performance of the tire. It is an important part of ensuring the safe driving of the vehicle and a crucial design project in the tire product development process.
[0003] As the profits of the domestic freight industry become increasingly weak, the market demand for heavy-duty and higher-mileage products is increasing. It is necessary to develop high-saturation all-wheel high-mileage products that require strong drive, high mileage, anti-stone pinching, high and low wear resistance of tread blocks, and low failure rate.
[0004] Current status of products with current technical means: The current product patterns are outdated, stones are easily trapped in the shoulder area of the product, there are high and low wear on the tread blocks in the middle of the crown, the product mileage is insufficient, the shoulders are empty, and the market competitiveness is poor.
[0005] In order to meet the market demand, a high-mileage tire pattern block, pattern ribs and tread pattern for all wheel positions specially used for medium and short-distance heavy loads have been developed. The tread pattern has the characteristics of strong driving, high mileage, anti-front and rear high and low wear of the pattern block, anti-stone clamping, and meeting the heavy-load transportation needs. Summary of the invention
[0006] The technical problem to be solved by the present invention is: how to design a high-mileage tread pattern for all wheel positions specially used for medium and short-distance heavy loads, which has the characteristics of strong drive, high mileage, resistance to uneven wear of tread blocks, anti-stone pinching, and meeting the needs of heavy-load transportation.
[0007] The technical solution of the present invention is specifically as follows: A tread block for a high-mileage tire of all wheel positions specially used for medium- and short-distance heavy loads, wherein the tread block is composed of a heptagon AMBCDEF, and the heptagon AMBCDEF includes a quadrilateral AMNF and a hexagon MBCDEN, which are connected by a shared edge MN, wherein outer contours AM, MB, and BC are composed of deep steel sheet grooves connected in sequence, and the shared edge MN is composed of shallow steel sheet grooves; and outer contours AF and outer contours CD are parallel to each other.
[0008] One end N of the shallow steel sheet groove is connected to the midpoint of the line segment EF.
[0009] The quadrilateral AMNF is a trapezoid, and the trapezoid is provided with rolling patterns.
[0010] Both the deep steel sheet grooves and the shallow steel sheet grooves are designed in a 2D straight line. The widths of the deep steel sheet grooves and the shallow steel sheet grooves are both 0.6 - 1 mm; the depth ratio of the deep steel sheet grooves to the shallow steel sheet grooves is 2.5:1, and the bottom is designed with an arc; the angle between the deep steel sheet groove BC and the tire axis is 60° - 70°; the angle between the deep steel sheet groove BM and the tire axis is 45° - 50°; the angle between the shallow steel sheet groove MN and the tire axis is 20° - 28°.
[0011] A high - mileage tire tread rib for medium - and short - distance heavy - load full - wheel positions includes a first tread rib and a second tread rib. The first tread rib includes serially connected tread block units; the tread block units are composed of the tread blocks described in claims 1 - 4 after rotating 180° around the center and then splicing with the tread blocks described in claims 1 - 4; the first tread rib is mirror - symmetric about the central axis, and then the tread block units are translated circumferentially along the tread by 1 / 2 of the circumferential length of the tread block units to form the second tread rib; a central tread groove is provided between the first tread rib and the second tread rib.
[0012] The first tread rib and the second tread rib are composed of tread block units with equal pitch, and the number of pitches is 45 - 55.
[0013] A high - mileage tread pattern for medium - and short - distance heavy - load full - wheel positions includes tread ribs and shoulder tread ribs. The shoulder tread ribs are located on both sides of the tread; a crown tread groove is provided between the shoulder tread ribs and the first tread rib or the second tread rib described in claim 5 or claim 6; the crown tread groove is mirror - symmetric with the central tread groove described in claim 5 or claim 6; grooves are provided at intervals along the circumferential direction on the outer side of the shoulder tread ribs, and the interval is the circumferential length of the tread block units described in claim 5 or claim 6. The grooves of the two shoulder tread ribs are circumferentially offset by 1 / 2 of the circumferential length of the tread block units described in claim 5 or claim 6; the inner edge of the shoulder tread rib corresponds to the outer edge of the first tread rib or the second tread rib described in claim 5 or claim 6.
[0014] The angle between the groove and the tire axis is 15° - 18°; the groove width is 14 - 28 mm; the groove depth is 28 - 33 mm; the angle between the inclined surface of the groove and the vertical direction is 14° - 18°.
[0015] The width ratio of the shoulder tread rib to the first tread rib or the second tread rib described in claim 5 or claim 6 is 1.1:1; the widths and depths of the central tread groove and the crown tread groove are the same, the width is 14 - 15 mm, and the depth is 15 - 17 mm.
[0016] Continuous and uninterrupted patterns in a dragon - scale shape are provided on the two side walls of the crown tread groove and the central tread groove described in claim 5 or claim 6.
[0017] Compared with the prior art, the technical effect of the present invention is that the tread pattern block adopts a stepped design of fine steel sheet grooves and deep steel sheet grooves, which can make the driving force of the tire stronger and the wear more uniform; the design of the pattern groove parameters and positions, combined with the design of the pattern pitch, increases the area of the pattern block, the pattern saturation increases by 10%, and the mileage of the product is increased by 10% year-on-year; the design of the shoulder groove and the design angle of the pattern groove enable the pattern to have the properties of resisting groove bottom cracking and preventing stone trapping. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic plan view of the tread pattern of the present invention.
[0019] Figure 2 is a schematic sectional view of the tread pattern of the present invention.
[0020] Figure 3 is a schematic sectional view of the pattern block of the present invention.
[0021] Figure 4 is a schematic sectional view of the shoulder pattern rib of the present invention including a shoulder pattern segment 401.
[0022] Figure 5 is a schematic sectional view of the groove wall 9 of the present invention.
[0023] Figure 6 is a schematic sectional view of the central pattern groove 1 and the crown pattern groove 2 of the present invention.
[0024] Figure 7 is a schematic sectional view of the deep steel sheet groove 5 and the shallow steel sheet 6 of the present invention.
[0025] Figure 8 is a schematic sectional view of the groove 8 of the present invention.
[0026] Figure 9 is a schematic structural view of the tire pattern of the prior art and the tire pattern of the present invention.
[0027] Among them, 1 is the central pattern groove; 2 is the crown pattern groove; 3 is the pattern rib; 301 is the first pattern rib; 302 is the second pattern rib; 303 is the pattern block unit; 4 is the shoulder pattern rib; 401 is the shoulder pattern segment; 5 is the deep steel sheet groove; 6 is the shallow steel sheet; 7 is the rolling pattern; 8 is the groove; 9 is the groove wall. DETAILED DESCRIPTION OF THE INVENTION
[0028] The present invention will be described in detail below with reference to the accompanying drawings and its specific embodiments.
[0029] As Figures 1-4As shown in the figure, a high-mileage tread pattern for all-wheel positions dedicated to medium and short-distance heavy loads includes tread ribs 3 and shoulder tread ribs 4. The shoulder tread ribs 4 are located on both sides of the tread. The tread ribs 3 include a first tread rib 301 and a second tread rib 302. A crown tread groove 2 is provided between the shoulder tread rib 4 and the first tread rib 301 or the second tread rib 302; a center tread groove 1 is provided between the first tread rib 301 and the second tread rib 301, and the center tread groove 1 is located in the middle of the tread; the crown tread groove 2 and the center tread groove 1 are mirror-symmetrical; the design of the tread grooves enables the tire to have strong driving performance and certain traction performance.
[0030] The first tread rib 301 includes serially connected tread block units 303; the tread block units 303 are formed by splicing the original tread blocks after rotating the tread blocks 180° around the symmetry center; the first tread rib 301 is mirror-symmetrical about the central axis, and then the tread block units 303 are translated circumferentially along the tread by 1 / 2 of the circumferential length of the tread block units 303 to form the second tread rib 302; the unique splicing of the tread blocks makes the pressure distribution more uniform when the tire is in contact with the ground, reduces the abnormal wear of the tread blocks, and extends the service life of the tire; it can also provide more stable support force and enhance the vehicle handling performance.
[0031] The first tread rib 301 and the second tread rib 302 are composed of equal-pitch tread block units 303, and the number of pitches is 45, which can be 50, or any integer value between 45 and 50, such as 47; the equal-pitch arrangement forms a regular drainage channel, which can drain water more efficiently when driving on wet ground and improve the safety of driving on wet ground.
[0032] The shoulder tread rib 4 includes serially connected shoulder tread segments 401. The shoulder tread segment 401 is composed of a pentagon HIGKL, and the pentagon HIGKL includes a rectangle KIGL and an isosceles triangle GLK, and the two are composed by sharing the side LG; grooves 8 are provided at intervals along the circumference on the outer side of the shoulder tread rib 4, and the interval is the circumferential length of the tread block unit 303 described in claim 5 or claim 6. The grooves 8 of the two shoulder tread ribs 4 are circumferentially offset by 1 / 2 of the circumferential length of the tread block unit 303; the inner edge of the shoulder tread rib 4 corresponds to the outer edge of the first tread rib 301 or the second tread rib 302; the groove offset makes the stress distribution in the shoulder area more uniform, avoids the problem of aggravated edge wear caused by the concentration of groove openings, and extends the service life of the tire; the matching of the interval distance and the tread block height can ensure that a reasonable support structure is formed between the drainage groove and the tread in the shoulder area, and balance the drainage capacity and mechanical strength.
[0033] The tread block is composed of a heptagon AMBCDEF, which includes a quadrilateral AMNF and a hexagon MBCDEN. The two are connected by a shared side MN. Among them, the outer contours AM, MB, and BC are successively connected by deep steel sheet grooves, and the shared side MN is composed of shallow steel sheet grooves; the outer contour AF is parallel to the outer contour CD; one end N of the shallow steel sheet groove is connected to the midpoint of the line segment EF; the steel sheet grooves connect the central tread groove 1 and the crown tread groove 2; the quadrilateral AMNF is a trapezoid; a stepped depth design is adopted to reduce local stress concentration caused by tread deformation, achieve progressive deformation when the tread contacts the ground, improve the grounding uniformity, and thus enhance the tire wear resistance; the connection design of the central tread groove and the crown tread groove improves the drainage and heat dissipation efficiency; the design of connecting the midpoint of the shallow steel sheet groove optimizes the steering response and the grounding uniformity.
[0034] To enhance the grip and at the same time inhibit overall wear, the trapezoid is provided with a rolling pattern 7.
[0035] As Figure 2 , Figure 5 shown, the two side groove walls 9 of the central tread groove 1 and the crown tread groove 2 are provided with continuous and uninterrupted patterns, presenting a dragon scale shape; the bionic scale topological structure realizes the redistribution of the stress field, reduces the difference in wear rates between the crown and shoulder regions, extends the tire life cycle, and avoids vibrations caused by irregular wear.
[0036] The tread pattern is formed by mirror symmetry of the pattern on the left side of the central axis and then translating the tread block unit 303 by 1 / 2 of the circumferential length along the circumferential direction of the tread to form the pattern on the right side.
[0037] The width ratio of the shoulder tread rib 4 to the first tread rib 301 or the second tread rib 302 is 1.1:1.
[0038] The angle between the deep steel sheet groove 5 BC and the tire axis is 60°, which can be 70°, or any angle between 60° and 70°, such as 65°; the angle between the deep steel sheet groove 5 BM and the tire axis is 45°, which can be 50°, or any angle between 45° and 50°, such as 48°; the angle between the shallow steel sheet groove 6 MN and the tire axis is 20°, which can be 28°, or any angle between 20° and 28°, such as 24°; the angle between the groove 8 and the tire axis is 15°, which can be 18°, or any angle between 15° and 18°, such as 16°.
[0039] As Figure 6As shown, the width and depth of the central tread groove 1 and the crown tread groove 2 are the same. The width W1 is 14 mm, which can be 15 mm, or any value between 14 - 15 mm, such as 14.5 mm. The depth L1 is 15 mm, which can be 17 mm, or any value between 15 - 17 mm, such as 16.5 mm.
[0040] As Figure 7 shown, both the deep steel sheet groove 5 and the shallow steel sheet groove 6 are of 2D linear design. The width W1 of both the deep steel sheet groove 5 and the shallow steel sheet groove 6 is 0.6 mm, which can be 1 mm, or any value between 0.6 - 1 mm, such as 0.8 mm. The ratio of the depth L1 of the deep steel sheet groove 5 to that of the shallow steel sheet groove 6 is 2.5:1, and the bottom C1 is of arc design.
[0041] As Figure 8 shown, the tread pattern adopts a semi - open shoulder design. The width k - k of the groove 8 is 14 mm, which can be 28 mm, or any value between 14 - 28 mm, such as 21 mm. The depth L1 of the groove 8 is 28 mm, which can be 33 mm, or any value between 28 - 33 mm, such as 30 mm. The angle deg between the inclined plane of the groove 8 and the vertical direction is 14°, which can be 18°, or any angle between 14° - 18°, such as 16°.
[0042] As Figure 9 shown, the present invention provides a tread block, tread rib and tread pattern for a medium - short - distance heavy - duty all - wheel - position high - mileage tire. The tread block of the tire of the present invention adopts a stepped design of fine steel sheet grooves and deep steel sheet grooves, which can make the driving force of the tire stronger and the wear more uniform. The design of the groove parameters and positions, combined with the design of the tread pitch, increases the area of the tread block. Compared with the existing tire tread structure, the tread saturation increases by 10%, and the mileage of the product is increased by 10% year - on - year. The design of the shoulder groove and the design angle of the tread groove can make the tread have the properties of anti - crack at the groove bottom and anti - stone - jamming.
[0043] The above specifically describes the present invention in combination with specific embodiments. It is necessary to point out here that these embodiments are only used to further illustrate the present invention and cannot be understood as limiting the protection scope of the present invention. Those skilled in the art can make some non - essential improvements and adjustments based on the above content of the present invention, and all belong to the protection scope of the present invention.
[0044] For other content, refer to the prior art.
[0045] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the overall concept of the present invention, several changes and improvements can still be made, and these should also be regarded as the protection scope of the present invention.
Claims
1. A high mileage tire tread block for all wheel positions specially designed for medium and short distance heavy load, characterized in that: The pattern block is composed of a heptagon AMBCDEF, which includes a quadrilateral AMNF and a hexagon MBCDEN, which are connected by a shared edge MN, wherein the outer contours AM, MB, and BC are composed of deep steel sheet grooves connected in sequence, and the shared edge MN is composed of shallow steel sheet grooves; the outer contour AF is parallel to the outer contour CD.
2. The all-wheel high-mileage tire tread blocks for medium- and short-distance heavy-duty use as claimed in claim 1, characterized in that: One end N of the shallow steel sheet groove is connected to the midpoint of the line segment EF.
3. The all-wheel high mileage tire tread blocks for medium and short distance heavy loads as claimed in claim 1, characterized in that: The quadrilateral AMNF is a trapezoid, and the trapezoid is provided with rolling patterns.
4. The all-wheel high mileage tire tread blocks for medium-short distance heavy loads as claimed in claim 1, characterized in that: The deep steel sheet groove and the shallow steel sheet groove are both 2D linear designs, and the widths of the deep steel sheet groove and the shallow steel sheet groove are both 0.6-1 mm; the depth ratio of the deep steel sheet groove and the shallow steel sheet groove is 2.5:1, and the bottom is designed in an arc shape; the angle between the deep steel sheet groove BC and the tire axis is 60°-70°; the angle between the deep steel sheet groove BM and the tire axis is 45°-50°; the angle between the shallow steel sheet groove MN and the tire axis is 20°-28°.
5. A tread rib for a high-mileage tire for all wheel positions specially used for medium- and short-distance heavy loads, comprising a first tread rib and a second tread rib, characterized in that: The first pattern rib comprises a series of pattern block units; the pattern block unit is formed by rotating the pattern block described in claims 1 to 4 180° around the center and splicing it with the pattern block described in claims 1 to 4; the first pattern rib is mirror-symmetrical through the central axis, and then the pattern block unit is translated along the circumferential direction of the tread by 1 / 2 of the circumferential length to form the second pattern rib; a central pattern groove is arranged between the first pattern rib and the second pattern rib.
6. The all-wheel high mileage tire tread ribs for medium-short distance heavy loads as claimed in claim 5, characterized in that: The first pattern ribs and the second pattern ribs are composed of pattern block units with equal pitches, and the number of pitches is 45-55.
7. A tread pattern for all wheel positions with high mileage specially used for medium and short distance heavy load, comprising tread ribs and shoulder tread ribs, characterized in that: The shoulder pattern ribs are located on both sides of the tread; a crown pattern groove is arranged between the shoulder pattern rib and the first pattern rib or the second pattern rib described in claim 5 or claim 6; the crown pattern groove is mirror-symmetrical to the center pattern groove described in claim 5 or claim 6; grooves are arranged at intervals along the circumferential direction on the outer side of the shoulder pattern rib, and the interval is the circumferential length of the pattern block unit described in claim 5 or claim 6, and the grooves of the two shoulder pattern ribs are circumferentially offset by 1 / 2 of the circumferential length of the pattern block unit described in claim 5 or claim 6; the inner edge of the shoulder pattern rib corresponds to the outer edge of the first pattern rib or the second pattern rib described in claim 5 or claim 6.
8. The all-wheel high mileage tread pattern for medium- and short-distance heavy-duty vehicles as claimed in claim 7, characterized in that: The angle between the groove and the tire axis is 15°-18°; the groove width is 14-28 mm; the groove depth is 28-33 mm; and the angle between the inclined surface of the groove and the vertical direction is 14°-18°.
9. The all-wheel high mileage tread pattern for medium- and short-distance heavy-duty vehicles as claimed in claim 7, characterized in that: The width ratio of the shoulder pattern rib to the first pattern rib or the second pattern rib described in claim 5 or claim 6 is 1.1:1; the width and depth of the center pattern groove and the crown pattern groove are consistent, with a width of 14-15 mm and a depth of 15-17 mm.
10. The all-wheel high mileage tread pattern for medium- and short-distance heavy-duty vehicles as claimed in claim 7, characterized in that: The groove walls on both sides of the crown groove and the center groove described in claim 5 or claim 6 are provided with continuous and uninterrupted patterns in the shape of dragon scales.