Tread pattern structure of mine type all-steel truck radial tire

Abstract

The utility model relates to a mine type all-steel truck radial tire tread pattern structure, a tire body comprises a wheel disc and a tire tread, patterns are uniformly distributed on the tire tread, and the mine type all-steel truck radial tire tread pattern structure is characterized in that two rows of transverse pattern grooves with opposite zigzag shapes and fold line directions are respectively and uniformly distributed in a staggered manner from a center line to two sides in the circumferential direction of the tire tread; the transverse pattern grooves move downwards step by step in a three-layer step mode, the three-layer steps comprise the first step on the upper portion, the second step on the middle portion and the third step on the lower portion, and the internal corner turning position of each layer of step is in circular arc transition. Compared with the prior art, the utility model ensures the uniform distribution of the bearing capacity of the tire, improves the wear resistance, puncture resistance and chunking and chipping prevention of the tire, effectively improves the traction force and service life of the tire, and avoids the early shoulder vacancy problem.

Description

Technical Field

[0001] The utility model belongs to the technical field of tire design and relates to a tread pattern structure of a mining type all-steel load-bearing radial tire. Background Art

[0002] Tires are donut-shaped elastic rubber products used for ground contact and rolling, which are installed on various vehicles or machines. They are usually installed on metal rims, can support the vehicle body, buffer external impact, achieve contact with the road surface and ensure the driving performance of the vehicle. Tires are often used under complex and harsh conditions. They are subjected to various deformations, loads, forces, and high and low temperatures when driving, so they must have high load-bearing performance, traction performance and buffering performance. At the same time, they are also required to have high wear resistance and flex resistance, as well as low rolling resistance and heat generation. Half of the world's rubber consumption is used in tire production, which shows the ability of tires to consume rubber.

[0003] There are many different designs of tire treads. Their designs are based on the suitability for different purposes and road conditions. These aspects should also be considered when selecting tires. Tire treads play a very important role in the entire driving process. A well-designed tread can not only effectively save fuel, but also reduce the noise generated by the car during driving. At the same time, it can enhance the driving force, braking force and traction performance of the car on various harsh and slippery roads, thereby improving the safety of car driving.

[0004] There are generally several types of tire patterns:

[0005] (1) Straight groove pattern, also called ordinary pattern, is a pattern design with longitudinal grooves as the main feature.

[0006] Features: excellent operating stability, small rotation resistance, low noise, especially excellent drainage performance, not easy to slip laterally.

[0007] Applicable: walking on flat roads.

[0008] Vehicle types: cars, trucks, and even airplanes.

[0009] Disadvantages: Poor drive and traction.

[0010] (2) Horizontal groove pattern: A pattern design with horizontal grooves as the main feature.

[0011] Features: The driving force, braking force and traction of the transverse groove pattern are particularly excellent, and its wear resistance is excellent.

[0012] Applicable to: gravel roads and other harsh road surfaces.

[0013] Vehicle types used: Mostly used in industrial and medium- and short-distance vehicles, such as bulldozers, excavators, loaders and other medium and heavy-duty trucks.

[0014] Disadvantages: loud noise.

[0015] (3) Vertical and horizontal groove pattern: Vertical and horizontal groove pattern is also called comprehensive pattern, which combines the design of straight groove type and horizontal groove type.

[0016] Features: It combines the advantages of both longitudinal and transverse groove patterns.

[0017] Applicable: bad road conditions.

[0018] Disadvantages: prone to abnormal wear.

[0019] (4) Block pattern: The pattern is arranged regularly in blocks.

[0020] Features: Good driving force and braking force, providing power to drive the car forward.

[0021] Applicable to: snowy, muddy and other roads.

[0022] Disadvantages: poor wear resistance and short mileage life.

[0023] The main mining-type all-steel load-bearing radial tires on the market are mainly driven on the harsh gravel mixed road surface in the mining area. The main quality defects of the tires are tread chipping and falling, poor wear resistance, easy heat generation and punctures, and the tires have high requirements for the running surface width and tread grooves.

[0024] The prior art discloses a tread pattern structure of a full-steel load-bearing mining-type radial tire, including a tire tread and a pattern evenly distributed on the tire tread; the tire tread is composed of nine equal parts of a flexible mold, and along the center line of the tire tread circumference to the upper and lower side plates, transverse groove patterns with the same structure and opposite directions are evenly distributed, and the transverse groove pattern is a short octagonal structure, and three cylindrical stone-rowing columns are arranged on the bottom of each transverse groove pattern, and the bottom of each transverse groove pattern has a unique reinforcing rib design to make the bottom of the groove stronger, and the groove head of each transverse groove pattern has an increased transition angle; small patterns are distributed on the shoulder and side of the tire. The tire with this patented pattern has a high overload capacity and impact resistance, and reduces the probability of early damage to the tire caused by punctures, cuts, stone clamping, etc., but there is still a problem of partial shoulder space. Utility Model Content

[0025] The purpose of the utility model is to provide a mining-type all-steel load-bearing radial tire tread pattern structure in order to overcome at least one defect of puncture, chipping and falling of the above-mentioned prior art. The utility model ensures uniform distribution of tire load-bearing capacity, improves tire wear resistance, resists puncture and chipping, effectively improves tire traction and service life, and avoids early shoulder problems.

[0026] The purpose of the utility model can be achieved through the following technical solutions:

[0027] One of the technical solutions of the utility model is to provide a mining type all-steel load-bearing radial tire tread pattern structure, the tire body includes a wheel disc and a tire tread, the tire tread is evenly distributed with patterns, along the center line of the tire tread circumference to the two sides, two rows of transverse pattern grooves with opposite folding line directions are evenly and staggeredly distributed, the running surface is wide, the pattern is deep, the driving force, braking force and traction are particularly excellent, and the wear resistance is excellent;

[0028] The transverse grooves move downward step by step in the form of three steps, including a first step at the top, a second step in the middle and a third step at the bottom. The turning point of the inner corner of each step adopts an arc transition to ensure excellent anti-puncture and stone removal effects.

[0029] Furthermore, the arc transition radius of the first step and the second step is 1 mm, and the arc transition radius of the third step is 6 mm;

[0030] The depth of the transverse groove is 25.8 mm;

[0031] The height of the first step is 9.8 mm, and the heights of the second step and the third step are 8 mm.

[0032] Furthermore, the inclination angle of each step is 15°, and the longitudinal spacing is 2 mm.

[0033] Furthermore, the groove bottom of the transverse groove is evenly distributed with protrusions, and the groove bottoms of adjacent transverse grooves are staggered with two or three protrusions, which play the role of stone removal and stone repelling, and prevent stones from being caught and piercing the groove bottom.

[0034] Furthermore, the height of the bump is 3 mm, the length is 6 mm, and the width is 3.5 mm.

[0035] Furthermore, the transverse grooves extend to the shoulder area and are provided with square shoulder grooves, and arc transitions are used at the turning points of the inner and outer corners of the shoulder grooves to improve heat dissipation of the shoulder and avoid shoulder cracks.

[0036] Furthermore, the depth of the groove under the shoulder is 9 mm, and the arc transition radius is 8 mm.

[0037] Furthermore, under the shoulder of the tire tread, there are elliptical heat dissipation wind tunnels evenly distributed between the shoulder pattern grooves. The heat dissipation wind tunnels move downward step by step in the form of two steps. The turning points of the inner corner and the outer corner of each step are arc transition, which increases the heat dissipation area, reduces heat generation during tire use, and reduces shoulder voids and shoulder cracks.

[0038] Furthermore, the arc transition radius of each step of the heat dissipation wind tunnel is 2 mm;

[0039] The depth of the heat dissipation wind tunnel is 10 mm;

[0040] The height of the first step is 6 mm, and the height of the second step is 4 mm.

[0041] Furthermore, modified steel sheets are evenly distributed on the tire tread to play a role in exhaust during vulcanization.

[0042] As a preferred technical solution, the tire tread is provided with sidewall curves and sidewall anti-scratch strips under the shoulders, which effectively prevent the sidewalls from wearing each other when dual tires are installed side by side.

[0043] As a preferred technical solution, the tire tread is composed of ten equal parts of an active mold, and the pattern pitch of the tire tread is 30 sections.

[0044] Compared with the prior art, the utility model has the following beneficial effects:

[0045] (1) The transverse folded grooves in opposite directions of the utility model make the tire have a higher grip than the transverse pattern during use, so that the force bearing area of ​​the contact surface between the tire pattern and the road surface is more reasonably distributed, the force bearing surface is larger, the quality problems caused by concentrated force on the tire are reduced, and the wear resistance of the tire is improved;

[0046] (2) The transverse grooves of the utility model adopt a stepped design, and a protrusion is added to the bottom of the groove to prevent puncture by hard objects such as stones, which effectively prevents the groove bottom from cracking and has good drainage and mud discharge properties;

[0047] (3) The shoulder groove of the utility model provides excellent heat dissipation performance and puncture resistance during tire use, and has high wear resistance;

[0048] (4) The heat dissipation wind tunnel of the utility model is conducive to the heat dissipation of the tire during driving, protecting the shoulder and avoiding the early shoulder void problem;

[0049] (5) The pattern structure of the utility model has excellent puncture resistance, no broken pieces or side holes, and can be applied to impact-resistant and explosion-proof tires. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a structural schematic diagram of the tread pattern structure of a mining-type all-steel load-bearing radial tire in an embodiment of the utility model;

[0051] Figure 2 It is a structural schematic diagram of one pitch of the tread pattern structure of a mining-type all-steel load-bearing radial tire in an embodiment of the utility model;

[0052] Figure 3 It is a schematic diagram of the cross-sectional structure of the transverse groove in the embodiment of the utility model.

[0053] Description of the markings in the figure:

[0054] 1—tire tread, 2—lateral groove, 21—first step, 22—second step, 23—third step, 3—groove under shoulder, 4—heat dissipation wind tunnel, 5—bump, 6—modified steel sheet. DETAILED DESCRIPTION

[0055] The present invention is described in detail below in conjunction with specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0056] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are used to describe common objects, and only refer to different instances of the same object, and are not intended to imply that the objects described in this way must adopt a given order, whether in time, space, order or any other manner.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Example:

[0059] A mining type all-steel load-carrying radial tire tread pattern structure, such as Figure 1 and Figure 2 As shown, the tire body includes a wheel disc and a tire tread 1, and patterns are evenly distributed on the tire tread 1. Along the circumferential center line of the tire tread 1 to the two sides, two rows of transverse pattern grooves 2 with opposite folding lines are evenly and staggeredly distributed, respectively. The running surface is wide, the pattern is deep, the driving force, braking force and traction are particularly excellent, and its wear resistance is excellent;

[0060] like Figure 3As shown, the transverse groove 2 moves downward step by step in the form of three steps, including a first step 21 at the top, a second step 22 in the middle, and a third step 23 at the bottom. The inner corner of each step adopts an arc transition to ensure excellent puncture prevention and stone removal effects.

[0061] The arc transition radius of the first step 21 and the second step 22 is 1 mm, and the arc transition radius of the third step 23 is 6 mm;

[0062] The depth of transverse groove 2 is 25.8 mm;

[0063] The height of the first step 21 is 9.8 mm, and the heights of the second step 22 and the third step 23 are 8 mm;

[0064] The inclination angle of each step is 15°, and the longitudinal spacing is 2mm;

[0065] The groove bottom of the transverse groove 2 is evenly distributed with protrusions 5, and the groove bottoms of adjacent transverse grooves 2 are staggered with two or three protrusions 5, which play the role of stone removal and stone repelling to prevent stones from being caught and piercing the groove bottom;

[0066] The height of the bump 5 is 3 mm, the length is 6 mm, and the width is 3.5 mm;

[0067] The transverse groove 2 extends to the shoulder area and is distributed with a square shoulder groove 3. The inner and outer corners of the shoulder groove 3 are both arc-shaped, which improves heat dissipation in the shoulder and avoids shoulder cracks.

[0068] The depth of the shoulder groove 3 is 9mm, and the arc transition radius is 8mm;

[0069] Under the shoulder of the tire tread 1, there are evenly distributed elliptical heat dissipation wind tunnels 4 between the under-shoulder pattern grooves 3. The heat dissipation wind tunnels 4 are gradually moved down in two steps. The turning points of the inner corner and the outer corner of each step are arc-shaped, which increases the heat dissipation area, reduces the heat generation during tire use, and reduces shoulder voids and shoulder cracks.

[0070] The arc transition radius of each step of the heat dissipation wind tunnel 4 is 2 mm;

[0071] The depth of the heat dissipation wind tunnel 4 is 10 mm;

[0072] The height of the first step is 6mm, and the height of the second step is 4mm;

[0073] Modified steel sheets 6 are evenly distributed on the tire tread 1 to play a role in exhaust during vulcanization.

[0074] The tire tread 1 is provided with sidewall curves and sidewall anti-scratch strips under the shoulder, which effectively prevent the sidewalls from wearing each other when two tires are installed side by side.

[0075] The tire tread 1 is composed of ten equal parts of flexible molds, and the pattern pitch of the tire tread 1 is 30 sections.

[0076] After adopting the tire tread pattern structure in this embodiment, the performance test is carried out according to the enterprise standard "Indoor Test Method for Performance of Heavy-duty Truck Radial Tires" as follows (the enterprise standard is higher than the national standard GB / T4501): the general durability test conditions are air pressure 930kPa, standard load 4250kg (according to 22 layers), starting speed 30km / h, constant speed, and load increase by 10% every 10 hours after 47h until the tire is damaged; the general durability time of the tire in this embodiment: 109 hours and 08 minutes, and the general durability of the existing tire is 70 hours and 04 minutes. Compared with the existing tires, it is improved by 37 hours and 04 minutes. In the tire strength test in this embodiment, the first four points: 3220, the fifth point puncture: 7200, the maximum destructive energy / standard value: 223% puncture, in the existing tire strength test, the first four points: 3220, the fifth point puncture: 6557.5, the maximum destructive energy / standard value: 203.65% puncture. Indoor experimental strength and outdoor actual loading mileage experiments have confirmed that the indoor strength performance and outdoor mileage of the mining-type all-steel radial tire of the utility model have been greatly improved. The pattern form of the utility model has higher strength and wear resistance, and the tire reduces the probability of early damage to the tire caused by shoulder voids, crown voids, and tread non-wear resistance.

[0077] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A mining type all-steel load-bearing radial tire tread pattern structure, the tire body comprises a wheel disc and a tire tread (1), the tire tread (1) has patterns evenly distributed, characterized in that: Two rows of transverse grooves (2) are evenly and alternately distributed along the circumferential center line of the tire tread (1) to both sides thereof, and the fold lines are in opposite directions; The transverse groove (2) moves downward step by step in the form of three steps, the three steps comprising a first step (21) at the top, a second step (22) in the middle and a third step (23) at the bottom, and the inner corner turning point of each step adopts an arc transition.

2. The tread pattern structure of a mining type all-steel load-bearing radial tire according to claim 1, characterized in that: The arc transition radius of the first step (21) and the second step (22) is 1 mm, and the arc transition radius of the third step (23) is 6 mm; The depth of the transverse groove (2) is 25.8 mm; The height of the first step (21) is 9.8 mm, and the heights of the second step (22) and the third step (23) are 8 mm.

3. The tread pattern structure of a mining type all-steel load-bearing radial tire according to claim 1, characterized in that: The inclination angle of each step is 15° and the longitudinal spacing is 2 mm.

4. The tread pattern structure of a mining type all-steel load-bearing radial tire according to claim 1, characterized in that: The groove bottoms of the transverse grooves (2) are evenly distributed with protrusions (5), and the groove bottoms of adjacent transverse grooves (2) are alternately distributed with two or three protrusions (5).

5. The tread pattern structure of a mining type all-steel load-bearing radial tire according to claim 4, characterized in that: The height of the protrusion (5) is 3 mm, the length is 6 mm, and the width is 3.5 mm.

6. The tread pattern structure of a mining type all-steel load-bearing radial tire according to claim 1, characterized in that: The transverse grooves (2) extend to the tire shoulder and are provided with square shoulder grooves (3). The inner corners and outer corners of the shoulder grooves (3) are both transformed into arcs.

7. The tread pattern structure of a mining type all-steel load-bearing radial tire according to claim 6, characterized in that: The depth of the shoulder groove (3) is 9 mm, and the arc transition radius is 8 mm.

8. The tread pattern structure of a mining type all-steel load-bearing radial tire according to claim 1, characterized in that: Elliptical heat dissipation wind tunnels (4) are evenly distributed between the shoulder grooves (3) under the shoulder of the tire tread (1), and the heat dissipation wind tunnels (4) gradually move downward in two steps, and the turning points of the inner corner and the outer corner of each step are both arc-shaped.

9. The tread pattern structure of a mining type all-steel load-bearing radial tire according to claim 8, characterized in that: The arc transition radius of each step of the heat dissipation wind tunnel (4) is 2 mm; The depth of the heat dissipation wind tunnel (4) is 10 mm; The height of the first step is 6 mm, and the height of the second step is 4 mm.

10. The tread pattern structure of a mining type all-steel load-bearing radial tire according to claim 1, characterized in that: Modified steel sheets (6) are evenly distributed on the tire tread (1).

Images