All-steel snow tire tread pattern for comprehensive purpose of truck meridian and tire

Abstract

According to the all-steel truck meridian comprehensive purpose snow tire tread pattern and the tire provided by the utility model, different steel sheet groove forms are designed on a central pattern block I, a middle pattern block II and a tire shoulder pattern block, so that the road holding property and the control stability of an ice and snow pavement are enhanced; the pattern main grooves are designed to be zigzag, and the tire shoulders are designed to be open tire shoulders, so that the water and snow discharging capacity and the control performance in the tire running process are improved, heat dissipation can be facilitated, and the early shoulder clearance failure rate of the tire is reduced; by means of the design, the tire is used for the ice and snow road surface, nails and antiskid chains are not needed, and the requirements for ice and snow ground gripping, braking performance and control stability in winter can be met. The tire not only meets the use requirement in winter, but also can be used for mixed roads.

Description

TECHNICAL FIELD

[0001] The utility model relates to a snow tire, especially to a full-steel load radial comprehensive-purpose snow tire tread pattern and tire. BACKGROUND

[0002] Japan belongs to temperate marine monsoon climate, and the ice and snow environment in some areas lasts for five months, the current market snow tire pattern has poor braking and control stability and cannot be completely suitable for ice and snow road surface, and customers also do not like to use the stud tire, so a full-steel load radial studless snow tire pattern needs to be developed to solve the current market technical problems.

[0003] The current snow tire exhibits the following technical status: (1) in order to enhance the ice and snow road surface grip braking performance of the tire, the stud is usually arranged on the tread; (2) the relatively soft tread rubber formula is used, with the decrease of weather temperature, the tread is more soft, and the ice and snow use grip demand can be met, but the tire rigidity is also weakened, and the mileage cannot meet the demand of the customers.

[0004] In order to meet the market demand, a full-steel load radial studless snow tire pattern is developed according to the special environment demand of the Japanese market. The tire pattern design comprehensively considers the local use working condition and climate characteristics in Japan, a new snow pattern is designed, the special design of the pattern block and groove is matched with different steel sheet design, so that the tire can meet the winter control stability demand and the high mileage wear resistance demand, and the use cost of the customers is saved. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a full-steel load radial comprehensive-purpose snow tire tread pattern and tire, the tire is used for ice and snow road surface, does not need to be inlaid with the stud and anti-skid chain, and can meet the ice and snow grip, braking and control stability performance in winter. The tire can meet the winter use demand and also can be used for the mixed road.

[0006] The utility model discloses a technical scheme for a full-steel load radial comprehensive snow tire tread pattern, which is provided with a plurality of pattern grooves and pattern blocks arranged at intervals along the circumferential direction of the tire. The pattern grooves are zigzag pattern grooves. The shoulder is an open shoulder. The pattern blocks are sequentially arranged from the center to the two sides as a center pattern block I, an intermediate pattern block II and a shoulder pattern block. Three 3D steel sheet grooves are respectively arranged on the center pattern block I and the intermediate pattern block II and are in communication with the two side pattern grooves. The three 3D steel sheet grooves are respectively a 3D steel sheet groove I, a 3D steel sheet groove II and a 3D steel sheet groove III. The 3D steel sheet groove I is located in the middle of the pattern block where it is arranged. The 3D steel sheet groove II is located above the 3D steel sheet groove I. The 3D steel sheet groove III is located below the 3D steel sheet groove I. The angle between the 3D steel sheet groove II and the 3D steel sheet groove I is 7-10°. The angle between the 3D steel sheet groove III and the 3D steel sheet groove I is 7-10°. A 2D steel sheet groove is arranged on the shoulder pattern block and penetrates the shoulder pattern block in the transverse direction. The 2D steel sheet groove is located in the middle of the shoulder pattern block where it is arranged.

[0007] The angle a between the transverse edge of the center pattern block I and the intermediate pattern block II and the transverse direction of the tire is 13-16°. The angle b between the vertical edge of the center pattern block I and the intermediate pattern block II and the vertical direction of the tire is 8-12°.

[0008] The 3D steel sheet groove I is located in the middle of the pattern block where it is arranged. The pattern block where it is arranged is divided into an upper pattern block and a lower pattern block. The upper pattern block and the lower pattern block are parallelograms. Then, the upper pattern block and the lower pattern block are moved and dislocated along the direction of the 3D steel sheet groove I in the middle. After the dislocation, the upper pattern block and the lower pattern block at the two ends along the direction of the 3D steel sheet groove I are chamfered or bevelled at the angles I and II, respectively, to form chamfers I and II. The opposite angles I and II of the upper pattern block and the lower pattern block are also chamfered or bevelled.

[0009] The 3D steel sheet groove is a zigzag groove in the length direction of the 3D steel sheet groove and is a zigzag structure in the depth direction. The width W1 of the 3D steel sheet groove is 1-2 mm. The depth L3 of the 3D steel sheet groove is 6-10 mm. In the depth direction, the 3D steel sheet groove is sequentially arranged as an upper section, an intermediate section and a lower section. The upper section and the lower section are vertical sections. The intermediate section is an S-shaped curved section. The size L1 of the lower section vertical section in the depth direction is 1-2 mm. The size L2 of the lower section vertical section in the depth direction is 2-3 mm. The size of the intermediate section in the depth direction is L3-L1-L2.

[0010] The steel sheet width W1 of the 2D steel sheet groove is 0.8-1.2 mm. The depth L1 of the 2D steel sheet groove is 5-9 mm.

[0011] The adjacent center pattern block I and intermediate pattern block II arranged in the same circumferential direction are connected by a reinforcing rib.

[0012] The shoulder blocks arranged in the same direction include shoulder block I and shoulder block II, the length of shoulder block II is 1.3-1.4 times of the length of shoulder block I in the tire circumferential direction, and shoulder block I and shoulder block II are arranged alternately.

[0013] The longitudinal edge of the shoulder block adjacent to the groove is beveled, and the angle c with the vertical direction of the tire is 8-12°, and the upper end angle or the lower end angle of the longitudinal edge of the shoulder block in the same direction adjacent to the groove is all bevelled or chamfered.

[0014] The shoulder block I is provided with a heat dissipation groove I leading to the side of the tire, and the heat dissipation groove I is communicated with the 2D steel sheet groove on the shoulder block I; the shoulder block II is provided with a heat dissipation groove II leading to the side of the tire, and the heat dissipation groove II is communicated with the 2D steel sheet groove on the shoulder block II.

[0015] The shoulder block I and the shoulder block II form a transverse shoulder groove, and the transverse shoulder groove has two types, namely, transverse shoulder groove I and transverse shoulder groove II, and the transverse shoulder groove I and the transverse shoulder groove II are arranged alternately; the width of the shoulder groove I is 44-45mm, and the length is 6-8mm, and the width of the transverse shoulder groove II is 42-44mm, and the length is 8-10mm.

[0016] The width of the shoulder block is 1.28-1.35 times of the width of the center block I or the middle block II;

[0017] The tread pattern is formed by rotating the left side pattern of the center axis by 180° to form the right side pattern;

[0018] The center block I, the middle block II and the shoulder block are designed with equal pitch;

[0019] The wear mark and the wear indicator are arranged in the groove; the depth of the wear indicator is designed as half of the depth of the pattern, and the circumference is equally divided into six parts.

[0020] The tire tread pattern is the above-mentioned tread pattern.

[0021] The utility model discloses a beneficial effect, the utility model provides a kind of all-steel load bearing radial line comprehensive purpose snow tire tread pattern and tire, different steel sheet groove form is designed on center pattern block I, middle pattern block II, shoulder pattern block, to enhance the grip of ice and snow road surface and control stability;Pattern main ditch form design is zigzag, shoulder design form is open shoulder design, both increase in the drainage snow ability and control performance during tire driving, also can help heat dissipation, reduce tire early shoulder empty failure rate;Through the above design, the tire is used for ice and snow road surface, does not need to inlay nail and antiskid chain, can satisfy winter ice and snow grip, braking and control stability performance.This tire meets winter use demand, and can also be used for mixed road. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure schematic diagram of the utility model.

[0023] Figure 2 It is the structure schematic diagram of each pattern block.

[0024] Figure 3 It is the section structure schematic diagram of 3D steel sheet that forms 3D steel sheet groove.

[0025] Figure 4 It is the section structure schematic diagram of 2D steel sheet that forms 2D steel sheet groove.

[0026] Figure 5 It is the section structure schematic diagram of pattern ditch.

[0027] Reference signs: center pattern block I 1, middle pattern block II 2, heat dissipation groove I 5, heat dissipation groove II 6, shoulder pattern block I 7, shoulder pattern block II 8, longitudinal edge portion of shoulder pattern block 70, transverse edge portion of shoulder pattern block 71, upper end chamfer 72, lower end chamfer 73, reinforcing rib 9, transverse shoulder pattern ditch I 10, transverse shoulder pattern ditch II 11, wear mark 12, pattern ditch 13, 3D steel sheet groove 14, 3D steel sheet groove I 141, 3D steel sheet groove II 142, 3D steel sheet groove III 143, 2D steel sheet groove 15, transverse edge portion 100, vertical edge portion 101, chamfer I 102, chamfer II 103, wear indicator 16. DETAILED DESCRIPTION

[0028] The technical scheme of the utility model will be described clearly and completely in combination with the drawings and specific embodiments, and it should be understood that the preferred embodiments described herein are only used for illustrating and explaining the utility model, and cannot be understood as limiting the protection scope of the utility model, and the skilled in the art can make some non-essential improvements and adjustments according to the content of the utility model. In the utility model, unless otherwise explicitly specified and limited, the technical terms used in the application should be the general meaning understood by the technical personnel described in the utility model. The terms "connected", "connected", "fixed", "arranged" and the like should be understood broadly, which can be fixed connection, can also be detachable connection, or can be integrated; can be directly connected, or indirectly connected through an intermediate medium; can be mechanical connection, or electrical connection. Unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] As shown in Figures 1-5 A kind of steel load-bearing radial comprehensive use snow tire tread pattern, there are interval setting groove and block of pattern along the tire circumferential direction, groove 13 is zigzag groove;Shoulder is open shoulder;Block of pattern, from center to both sides in turn are center block of pattern I 1, middle block of pattern II 2, shoulder block of pattern;Center block of pattern I 1, middle block of pattern II 2 are respectively provided with three 3D steel sheet grooves 14 communicated with two side grooves, respectively 3D steel sheet groove I 141, 3D steel sheet groove II 142, 3D steel sheet groove III 143, 3D steel sheet groove I 141 is located in the middle of the block of pattern, 3D steel sheet groove II 142 is located in the upper portion of 3D steel sheet groove I 141, 3D steel sheet groove III 143 is located in the lower portion of 3D steel sheet groove I 141, and the angle of 3D steel sheet groove II 142 and 3D steel sheet groove I 141 is 7-10 °, the angle of 3D steel sheet groove III 143 and 3D steel sheet groove I 141 is 7-10 °, shoulder block of pattern is provided with 2D steel sheet groove 15 transversely through shoulder block of pattern, 2D steel sheet groove 15 is located in the middle of the shoulder block of pattern.

[0030] The direction of 3D steel sheet groove I 141 is parallel to the transverse edge 100 of the block of pattern;Here, the direction refers to the parallel between the connecting line between both ends of 3D steel sheet groove I 141 and the transverse edge of the block of pattern, without considering the zigzag of 3D steel sheet groove I 141 along the length direction.

[0031] The direction of 3D steel sheet groove III 143 is parallel to the direction of 3D steel sheet groove II 142, and the connecting line between both ends of 3D steel sheet groove III 143 is parallel to the connecting line between both ends of 3D steel sheet groove II 142.

[0032] The center tread block I1, intermediate tread block II2, and shoulder tread blocks feature different steel groove designs to enhance grip and handling stability on icy and snowy roads. The main tread grooves are designed in a zigzag pattern, and the shoulder design is open, which increases water and snow drainage and handling performance during tire operation, while also aiding in heat dissipation and reducing the early shoulder failure rate. Through these designs, this tire can be used on icy and snowy roads without the need for studs or snow chains, meeting winter requirements for grip, braking, and handling stability. This tire is suitable for both winter and mixed road conditions.

[0033] The angle a between the lateral edge 100 of the center tread block I1 and the intermediate tread block II2 and the lateral direction of the tire is 13-16°, and the angle b between the vertical edge 101 of the center tread block I1 and the intermediate tread block II2 and the vertical direction of the tire is 8-12°.

[0034] The 3D steel groove I141 is located in the middle of the patterned block, dividing it into an upper and lower patterned block. Both the upper and lower blocks are parallelograms. The upper and lower blocks are then moved and misaligned along the direction of the 3D steel groove I141. After misalignment, corners I and II of the upper and lower blocks at both ends of the 3D steel groove I141 are chamfered or beveled, forming chamfer I102 and chamfer II103 respectively. The opposite corners of corners I and II of the upper and lower blocks are also chamfered or beveled. The chamfering or beveling of the corners of the upper and lower blocks is consistent from top to bottom along the depth of the groove. If beveling, the cut is made vertically perpendicular to the groove.

[0035] The adjacent center tread blocks I1 and intermediate tread blocks II2, which are set in the same circumference, are connected by reinforcing ribs 9. The advantage of this design is that it increases the overall rigidity of the tread blocks and the lateral rigidity of the tire, thereby improving the tire's grip when turning. The tread blocks are connected by reinforcing ribs 9, which improves the overall rigidity of the center tread blocks I1 and intermediate tread blocks II2 and ensures the product's mileage.

[0036] The 3D steel plate groove 14 is a tortuous groove along its length and also has a tortuous structure along its depth; a cross-sectional view of the 3D steel plate groove 14 is shown below. Figure 4 As shown, the width W1 of the 3D steel plate groove 14 is 1-2mm, and the depth L3 is 6-10mm. In the depth direction, the 3D steel plate groove 14 is divided into an upper section, a middle section, and a lower section from top to bottom. The upper and lower sections are vertical sections, and the middle section is an S-shaped curved section. The dimension L1 of the lower vertical section in the depth direction is 1-2mm, the dimension L2 of the lower vertical section in the depth direction is 2-3mm, and the dimension of the middle section in the depth direction is L3-L1-L2.

[0037] 2D steel sheet groove 15 is a curved groove in the length direction of 2D steel sheet groove, and is a vertical structure in the depth direction; the cross-sectional view of 2D steel sheet groove 15 is shown in Figure 5 The steel sheet width W1 of 2D steel sheet groove 15 is 0.8-1.2 mm, and the depth L1 is 5-9 mm, and the bottom of 2D steel sheet groove 15 is a circular arc in the cross section along the width direction.

[0038] The 3D steel sheet groove can prevent the tire from being deformed during driving, maintain a good grounding state, and enhance the steering stability, and in combination with the 2D steel sheet groove 15 of the shoulder, the rain and snow removal performance of the tread pattern is enhanced, thereby improving the steering stability and braking performance of the tire.

[0039] The shoulder pattern blocks arranged in the same circumferential direction include shoulder pattern block I 7 and shoulder pattern block II 8, and the shoulder pattern block I 7 and the shoulder pattern block II 8 form a transverse shoulder pattern groove, the shoulder pattern block II 8 is 1.3-1.4 times the shoulder pattern block I 7 in the tire circumferential length, and the shoulder pattern block I 7 and the shoulder pattern block II 8 are alternately arranged.

[0040] The open shoulder design form, in combination with the design shape of the two different sizes of shoulder pattern block I 7 and shoulder pattern block II 8 alternately arranged, can ensure good steering performance and ground adhesion, and can enhance the snow and water removal capacity of the tire when driving on ice and snow road, thereby ensuring the steering stability of the tire.

[0041] The shoulder pattern block I 7 is provided with a heat dissipation groove I 5 leading to the side of the tire, and the heat dissipation groove I 5 is communicated with the 2D steel sheet groove 15 on the shoulder pattern block I 7; the shoulder pattern block II 8 is provided with a heat dissipation groove II 6 leading to the side of the tire, and the heat dissipation groove II 6 is communicated with the 2D steel sheet groove 15 on the shoulder pattern block II 8.

[0042] The heat dissipation groove design on the shoulder pattern block, in combination with the design of the 2D steel sheet groove on the shoulder pattern block, can effectively reduce the heat generated by the shoulder of the tire during driving through air flow. The heat dissipation groove design on the side of the transverse shoulder pattern groove can further increase the heat dissipation capacity of the shoulder pattern, and can also increase the water removal capacity of the tire shoulder.

[0043] The longitudinal edge 70 of the shoulder pattern block adjacent to the pattern groove is a bevel, and the angle c with the vertical direction of the tire is 8-12°, the upper end angle 72 or the lower end angle 73 of the longitudinal edge 70 of the shoulder pattern block in the same circumferential direction is all chamfered or beveled, and the upper end chamfer 72 or the lower end chamfer 73 is formed. The upper end angle 72 or the lower end angle 73 of the longitudinal edge 70 of the shoulder pattern block in the same circumferential direction is chamfered or beveled along the depth direction of the pattern groove, and the whole angle is consistent from top to bottom, such as beveling, and is vertically cut according to the direction perpendicular to the pattern groove.

[0044] The angle d between the lateral edge 71 of the shoulder block and the lateral direction of the tire is 8-11°.

[0045] The shoulder block I 7 and the shoulder block II 8 form a lateral shoulder groove, and the lateral shoulder groove has two types, namely, a lateral shoulder groove I 10 and a lateral shoulder groove II 11, which are arranged alternately; the width of the shoulder groove I 10 is 44-45 mm, and the length is 6-8 mm; the width of the shoulder groove II 11 is 42-44 mm, and the length is 8-10 mm.

[0046] The purpose of designing two types of lateral shoulder grooves is that the combination of the lateral shoulder grooves with different lengths and widths can effectively cope with the rigidity change of the tire block, so that the tire has better control stability during driving.

[0047] The wider shoulder lateral groove can more effectively help to remove snow, and the reason for the narrower shoulder lateral groove is to prevent the tire surface from being covered with snow; the reason for the different lengths of the two types of lateral shoulder grooves is to increase the drainage capacity; after the snow melts into water, the lateral shoulder grooves with different lengths can more easily guide the water flow to flow out of the tire surface, thereby reducing the water sliding phenomenon.

[0048] The wear mark 12 and the wear indicator 16 are arranged in the groove. The depth of the wear indicator 16 is designed to be half of the groove depth, and the wear indicator 16 is evenly distributed in the circumferential direction. The wear mark 12 represents that the tire has been worn to the depth of the wear mark 12, and the tire has reached the scrap level.

[0049] The width of the shoulder block I 7 and the shoulder block II 8 is 1.28-1.35 times the width of the center block I 1 and the middle block II 2.

[0050] The tread pattern is formed by rotating the left side pattern of the center axis by 180° to form the right side pattern.

[0051] The center block I 1, the middle block II 2, and the shoulder block are designed with equal pitches. The number of pitches can be 50-55.

[0052] Along the depth direction of the groove 13, the width of the groove gradually increases from bottom to top, and the bottom is a flat surface connected to the rounded corners of the two side walls; the width of the groove 13 is 8-12 mm, and the depth L1 is 20-24 mm.

[0053] According to the previous design experience, the tread pattern saturation of the existing snow tire is generally about 60%, and the tread pattern saturation of the present application is 65%, which can improve the product mileage to a certain extent.

[0054] A full-steel load radial comprehensive snow tire tread pattern, the tire tread pattern is the above-mentioned tread pattern.

[0055] The above only describes preferred embodiments of the present application, rather than all embodiments, and the protection scope of the present application is not limited thereto, and each technical feature of the above-described embodiments can be combined arbitrarily. In order to make the description simple, each technical feature in the above-described embodiments is not described in all possible combinations, however, as long as the combination of these technical features does not contradict or cannot be realized, it should be considered that the combination of these technical features is within the scope of the present application. When the combination of technical solutions contradicts or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application. It should be noted that, for those skilled in the art and any person skilled in the art, without departing from the overall concept of the present application and the spirit of the principle of the present application, the technical solutions and the application concept of the present application can be replaced or changed, and several changes and improvements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A tread pattern for an all-steel radial multi-purpose snow tire, characterized in that: The tire is provided with tread grooves and tread blocks spaced apart along its circumference. The tread grooves are zigzag grooves. The tire shoulder is an open shoulder. The tread blocks are arranged from the center to the sides as follows: center tread block I (1), middle tread block II (2), and shoulder tread block. The center tread block I (1) and the middle tread block II (2) are provided with three 3D steel plate grooves (14) that communicate with the tread grooves on both sides. These are 3D steel plate groove I (141), 3D steel plate groove II (142), and 3D steel plate groove III (143). The 3D steel plate groove I (141) is located in the tread groove. In the middle of the tread block, 3D steel plate groove II (142) is located above 3D steel plate groove I (141), and 3D steel plate groove III (143) is located below 3D steel plate groove I (141). The angle between 3D steel plate groove II (142) and 3D steel plate groove I (141) is 7-10°, and the angle between 3D steel plate groove III (143) and 3D steel plate groove I (141) is 7-10°. The shoulder tread block is provided with a (2)D steel plate groove (15) that runs horizontally through the shoulder tread block. The 2D steel plate groove (15) is located in the middle of the shoulder tread block.

2. The all-steel radial multi-purpose snow tire tread pattern according to claim 1, characterized in that: The angle a between the lateral edge (100) of the center tread block I (1) and the middle tread block II (2) and the lateral direction of the tire is 13-16°, and the angle b between the vertical edge (101) of the center tread block I (1) and the middle tread block II (2) and the vertical direction of the tire is 8-12°. The 3D steel plate groove Ⅰ (141) is located in the middle of the pattern block, dividing the pattern block into an upper pattern block and a lower pattern block. The upper and lower pattern blocks are parallelograms. Then, the upper and lower pattern blocks move and are misaligned along the direction of the 3D steel plate groove Ⅰ (141) in the middle. After misalignment, the corners Ⅰ and Ⅱ of the upper and lower pattern blocks at both ends of the direction of the 3D steel plate groove Ⅰ (141) are chamfered or beveled to form chamfer Ⅰ (102) and chamfer Ⅱ (103) respectively. The opposite corners of the upper and lower pattern blocks Ⅰ and Ⅱ are also chamfered or beveled.

3. The all-steel radial multi-purpose snow tire tread pattern according to claim 1, characterized in that: The 3D steel plate groove (14) is a tortuous groove in the length direction and a tortuous structure in the depth direction; the width W1 of the 3D steel plate groove (14) is 1-2mm and the depth L3 is 6-10mm. In the depth direction, the 3D steel plate groove (14) is divided into an upper section, a middle section and a lower section from top to bottom. The upper section and the lower section are vertical sections, the middle section is an S-shaped curved section, the dimension L1 of the lower vertical section in the depth direction is 1-2mm, the dimension L2 of the lower vertical section in the depth direction is 2-3mm, and the dimension of the middle section in the depth direction is L3-L1-L2. The width W1 of the steel sheet in the 2D steel sheet groove (15) is 0.8-1.2 mm, and the depth L1 is 5-9 mm.

4. The all-steel radial multi-purpose snow tire tread pattern according to claim 1, characterized in that: The adjacent central patterned blocks I (1) and intermediate patterned blocks II (2) set in the same circumference are connected by reinforcing ribs (9).

5. The all-steel radial multi-purpose snow tire tread pattern according to claim 1, characterized in that: The shoulder tread blocks set in the same circumference include shoulder tread block I (7) and shoulder tread block II (8). In terms of tire circumferential length, shoulder tread block II (8) is 1.3-1.4 times that of shoulder tread block I (7). Shoulder tread blocks I (7) and shoulder tread blocks II (8) are set alternately.

6. The all-steel radial multi-purpose snow tire tread pattern according to claim 1, characterized in that: The longitudinal edge (70) of the shoulder tread block adjacent to the tread groove is a bevel, and the angle c with the vertical direction of the tire is 8-12°. The upper corner (72) or lower corner (73) of the longitudinal edge of the shoulder tread block adjacent to the tread groove in the same circumference is all chamfered or beveled.

7. The all-steel radial multi-purpose snow tire tread pattern according to claim 5, characterized in that: The shoulder tread block I (7) has a heat dissipation groove I (5) leading to the side of the tire, and the heat dissipation groove I (5) is connected to the 2D steel plate groove (15) on the shoulder tread block I (7); the shoulder tread block II (8) has a heat dissipation groove II (6) leading to the side of the tire, and the heat dissipation groove II (6) is connected to the 2D steel plate groove (15) on the shoulder tread block II (8).

8. The all-steel radial multi-purpose snow tire tread pattern according to claim 5, characterized in that: A transverse shoulder tread groove is formed between shoulder tread block I (7) and shoulder tread block II (8). There are two types of transverse shoulder tread grooves: transverse shoulder tread groove I (10) and transverse shoulder tread groove II (11). Transverse shoulder tread groove I (10) and transverse shoulder tread groove II (11) are alternately set. The width of shoulder tread groove I (10) is 44-45mm and the length is 6-8mm. The width of transverse shoulder tread groove II (11) is 42-44mm and the length is 8-10mm.

9. The all-steel radial multi-purpose snow tire tread pattern according to claim 1, characterized in that: The width of the shoulder tread block is 1.28-1.35 times that of the center tread block I (1) or the middle tread block II (2); The tread pattern is formed by rotating the pattern on the left side of the central axis 180° through the center to form the pattern on the right side; The center tread block I (1), the middle tread block II (2), and the shoulder tread blocks adopt an equal pitch design; Wear marks (12) and wear indicators (16) are provided in the groove; the depth of the wear indicator (16) is designed to be half the depth of the groove, and the circumference is evenly distributed in six equal parts.

10. A type of all-steel radial multi-purpose snow tire, characterized in that: The tire tread pattern is the tread pattern described in any one of claims 1-9.

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