CN212921026U

CN212921026U - Tire of backhoe loader in winter

Info

Publication number: CN212921026U
Application number: CN202021097206.8U
Authority: CN
Inventors: 程莉; 田兆菊; 陈润升
Original assignee: Sailun Jinyu Group Co Ltd
Current assignee: Sailun Jinyu Group Co Ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-04-09
Anticipated expiration: 2030-06-12

Abstract

The utility model discloses a winter backhoe loader tire, which comprises a central pattern groove, crown pattern blocks and shoulder pattern blocks, wherein a shoulder longitudinal pattern groove is formed between the adjacent crown pattern blocks and the shoulder pattern blocks; the shoulder pattern blocks are composed of large shoulder pattern blocks and small shoulder pattern blocks which are alternately arranged along the circumferential width of the tread, the large shoulder pattern blocks and the small shoulder pattern blocks are irregular polygons, and shoulder transverse pattern grooves are formed between the large shoulder pattern blocks and the small shoulder pattern blocks; the area of the upper surface of the shoulder large pattern block is 12% larger than that of the upper surface of the shoulder small pattern block, the distance between a first shoulder line where the shoulder large pattern block is located and the center line of the tread is larger than the distance between a second shoulder line where the shoulder small pattern block is located and the center line of the tread, the distance difference is L1, and the value of L1 is 6-8 mm; the shoulder large pattern blocks and the shoulder small pattern blocks are alternately arranged along the circumferential width of the tire tread, so that the phenomena of shoulder void, abnormal wear, groove bottom crack, chipping and block falling of the backhoe loader tire in winter are effectively reduced.

Description

Tire of backhoe loader in winter

Technical Field

The utility model belongs to the technical field of tire tread technique and specifically relates to a backhoe loader tire in winter.

Background

The backhoe loader has unique use characteristics in winter, adopts all-wheel drive, realizes 360-degree in-situ steering of a vehicle by utilizing the linear velocity difference of wheels at two sides, and is suitable for ground operation in a narrow space on an ice-snow road surface. Therefore, the backhoe loader has high requirements on the in-situ torsion performance of the tire in winter, and the shoulder pattern blocks are subjected to rolling action force in the steering process to easily cause empty tire shoulders, abnormal abrasion and crack of the groove bottom of the pattern, even cause the pattern blocks to crack and fall off; in addition, the backhoe loader is generally used in construction sites in winter, sand, stone, ice, snow and the like exist on the ground, the running conditions are complex, and sundries are easily mixed in grooves to influence the running performance of tires.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a backhoe loader tire winter designs the tire line, reduces the torsion that the tire original place twistd reverse and cause, has reduced the phenomenon that backhoe loader tire shoulder in winter is come to nothing, unusual wearing and tearing, ditch end breach, the piece falls in chipping effectively.

The utility model adopts the technical proposal that:

a winter backhoe loader tire comprises a central pattern groove, crown pattern blocks which are positioned on two sides of the central pattern groove and are centrosymmetric, and shoulder pattern blocks which are positioned on a shoulder and are centrosymmetric, wherein a shoulder longitudinal pattern groove is formed between the adjacent crown pattern blocks and the shoulder pattern blocks; the shoulder pattern blocks are composed of large shoulder pattern blocks and small shoulder pattern blocks which are alternately arranged along the circumferential width of the tread, the large shoulder pattern blocks and the small shoulder pattern blocks are irregular polygons, and shoulder transverse pattern grooves are formed between the large shoulder pattern blocks and the small shoulder pattern blocks; the area of the upper surface of the shoulder large pattern block is 12% larger than that of the upper surface of the shoulder small pattern block, the distance between a first shoulder line where the shoulder large pattern block is located and the tread center line is larger than the distance between a second shoulder line where the shoulder small pattern block is located and the tread center line, the distance difference is L1, and the value of L1 is 6-8 mm.

The shoulder large pattern blocks and the shoulder small pattern blocks are alternately arranged along the circumferential width of the tire tread, and the large pattern blocks at the shoulders have large grounding area in the in-situ torsion process of the tire, play a main bearing role and ensure the vehicle load; the small pattern blocks on the shoulder have small grounding area, and the torsional force is weakened by about 10 percent in the in-situ torsion process of the tire, so that the in-situ steering of the tire is facilitated, and the main effect on vehicle torsion is achieved; the shoulder large pattern blocks and the shoulder small pattern blocks are alternately arranged along the circumferential width of the tread, and the shoulder small pattern blocks are narrowed by about 10% at the tire shoulder line than the shoulder large pattern blocks, so that the stress of the tire in the original torsion process is reduced by about 10%, the grounding torsion force of the tire is improved, the shoulder pattern blocks are protected, and the phenomena of shoulder void, abnormal wear and block collapse are improved.

Preferably, the upper end and the lower end of the shoulder large pattern block and the shoulder small pattern block are both in a zigzag shape, the included angle between a first broken line and a second shoulder line from the second shoulder line at the lower end of the shoulder small pattern block is alpha, and the value of the alpha is 70-80 degrees; a first folding line of the upper end of the shoulder large pattern block from the first shoulder line is vertical to the first shoulder line, the length of the first folding line is L1, the included angle between the second folding line and the first shoulder line is beta, and the value of the beta is 55-65 degrees; the included angle between a first fold line of the upper end of the shoulder small pattern block from the second shoulder line and the second shoulder line is gamma, and the value of gamma is 55-65 degrees; an included angle between a first broken line of the lower end of the shoulder large pattern block from the first shoulder line and the first shoulder line is delta, and the value of delta is 70-80 degrees; the shoulder transverse pattern groove is in a flaring shape close to the shoulder, and is beneficial to discharging impurities such as sand, stone, ice and snow.

Preferably, the thickness of the shoulder where the first shoulder line is located is 3-5mm larger than that of the shoulder where the second shoulder line is located, the backhoe loader is frequently twisted during operation in winter, the shoulder is repeatedly subjected to twisting acting force, the heat generation is high, the thickness of the shoulder small pattern block is small, the heat dissipation performance is improved, and the shoulder delamination phenomenon is effectively prevented; the thickness of the tire shoulder is the shortest distance from the tire shoulder line to the inner surface of the tire body.

Preferably, the shoulder large pattern block and the shoulder small pattern block are both provided with sipes, the sipes run in a zigzag shape in the transverse direction, a first sipe depth h1 from a position close to the shoulder is arranged in the sipe depth direction, and the value of h1 is 2-3 mm; the depth h2 of the second cutter groove, h2 is 15-17 mm; the depth h3, h3 of the third cutter groove is 10-13 mm; the depth h4, h4 of the fourth cutter groove is 15-17 mm; the tire tread is characterized in that the cutter grooves are designed in a concave-convex manner in the depth direction of the cutter grooves, the depth of the first cutter groove close to the tire shoulder is only 2-3mm, the transverse direction of the cutter grooves is in a zigzag shape, the tire tread block is twisted in situ, the grinding and kneading process is realized, the strength of the tread block is enhanced on the basis of ensuring the grip force of the ice and snow road surface, and the probability of tire chipping and dropping is greatly reduced.

Preferably, the bottom of the shoulder transverse groove is provided with a plurality of trapezoidal bosses, and the trend of the trapezoidal bosses is consistent with that of the shoulder transverse groove; the bottom of the shoulder longitudinal pattern groove is provided with a strip-shaped boss, and the trend of the strip-shaped boss is consistent with that of the shoulder longitudinal pattern groove; the trapezoid bosses are 2-3mm in height, 1.5-2mm in length of the upper trapezoid bottom, 3-4mm in length of the lower trapezoid bottom, 2-4mm in height, and 2-3mm in distance between two adjacent trapezoid bosses; the length of the strip-shaped boss is 13-15mm, the width of the strip-shaped boss is 2-3mm, and the height of the strip-shaped boss is 2-4 mm; when the tire is twisted, the rotating grinding force of the vehicle acting on the ground and the pattern blocks enables the tearing force of the pattern groove bottom to be very strong, the trapezoidal lug boss is additionally arranged at the bottom of the shoulder transverse pattern groove, the grinding force of the groove bottom is weakened, the strength of the root part of the pattern blocks is enhanced, the tearing force of the twisting to the pattern groove bottom is reduced, the rigidity of the whole shoulder pattern blocks is enhanced, and the purpose of preventing the groove bottom from cracking is achieved; the longitudinal pattern groove bottom of the shoulder part is provided with a strip-shaped boss, which is beneficial to discharging debris such as mud stone, ice and snow and the like from the pattern groove bottom.

Preferably, the groove wall angles of the shoulder transverse groove and the shoulder longitudinal groove are both epsilon, and epsilon ranges from 8 degrees to 10 degrees; the radian radius of the bottom of the groove is R1, and the R1 is 4-6 mm.

Preferably, the crown pattern blocks are composed of large crown pattern blocks and small crown pattern blocks which are alternately arranged along the circumferential direction of the tread, the large crown pattern blocks and the small crown pattern blocks are irregular polygons, and crown transverse grooves are formed between the adjacent large crown pattern blocks and the small crown pattern blocks; the large pattern blocks and the small pattern blocks are provided with cutter grooves, and the transverse pattern groove bottoms of the crown parts are provided with trapezoidal bosses.

The utility model provides a back shovel loader tire in winter, shoulder big decorative pattern piece and shoulder little decorative pattern piece are arranged along tread circumference width in turn, and shoulder little decorative pattern piece narrows about 10% than shoulder big decorative pattern piece at the shoulder line, makes the atress reduce about 10% in the tire original place twists reverse the in-process, improves the ground connection torsional force of tire, protects the shoulder decorative pattern piece, has improved shoulder and has come to nothing, unusual wearing and tearing and fall the phenomenon of piece with garrulous; the shoulder transverse pattern groove is flared near the shoulder, which is beneficial to discharging impurities such as sand, stone, ice and snow; the lateral trend of the cutter groove is in a fold line shape, the cutter groove is designed in a concave-convex shape in the depth direction, the depth is changed, the pattern block is reinforced while the pattern grasping force is ensured, and the pattern block is prevented from collapsing and falling; the bottom of the shoulder transverse groove is provided with a trapezoidal boss to buffer the breaking force of the tire on the groove bottom caused by in-situ torsion, so as to prevent the groove bottom from cracking; the bottom of the shoulder longitudinal pattern groove is provided with a strip-shaped lug boss, which is beneficial to discharging debris such as mud stone, ice and snow and the like from the bottom of the pattern groove; the utility model provides a backhoe loader tire in winter has reduced the phenomenon that backhoe loader tire shoulder was come to nothing in winter, abnormal wear, ditch end breach, the piece falls in the crackle effectively.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of a tire according to the present invention;

FIG. 3 is a cross-sectional view of the sipe of FIG. 1 taken along the direction C-C;

FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 1;

FIG. 5 is a schematic structural view of a trapezoidal boss;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 7 is a structural schematic diagram of a strip-shaped boss.

Reference numerals: 1. a central groove; 2. crown pattern blocks; 21. a crown large pattern block; 22. small flower blocks at the crown part; 3. shoulder pattern blocks; 31. shoulder large pattern blocks; 32. small flower blocks on the shoulder; 4. shoulder longitudinal grooves; 5. shoulder transverse groove grooves; 6. a first shoulder line; 7. a tread centerline; 8. a second shoulder line; 9. a cutter groove; 10. a trapezoidal boss; 11. a strip-shaped boss; 12. a crown transverse groove.

Detailed Description

In order to enable those skilled in the art to better understand the present invention, the following detailed description of the invention is provided in conjunction with the accompanying drawings.

A winter backhoe loader tire, as shown in FIG. 1, comprises a central pattern groove 1, crown pattern blocks 2 which are positioned at two sides of the central pattern groove 1 and are centrosymmetric, shoulder pattern blocks 3 which are positioned at a shoulder and are centrosymmetric, and a shoulder longitudinal pattern groove 4 is formed between the adjacent crown pattern blocks 2 and shoulder pattern blocks 3; the shoulder pattern blocks 3 are composed of large shoulder pattern blocks 31 and small shoulder pattern blocks 32 which are alternately arranged along the circumferential width of the tread, the large shoulder pattern blocks 31 and the small shoulder pattern blocks 32 are irregular polygons, and shoulder transverse pattern grooves 5 are formed between the adjacent large shoulder pattern blocks 31 and the small shoulder pattern blocks 32; the upper surface area of the shoulder large pattern block 31 is 12% larger than that of the shoulder small pattern block 32, the distance L11 between the first shoulder line 6 where the shoulder large pattern block 31 is located and the tread center line 7 is larger than the distance L12 between the second shoulder line 8 where the shoulder small pattern block 32 is located and the tread center line 7, the distance difference is L1, and the value of L1 is 6-8 mm.

The upper ends and the lower ends of the shoulder large pattern blocks 31 and the shoulder small pattern blocks 32 are both in a zigzag shape, the included angle between a first broken line of the lower ends of the shoulder small pattern blocks 32 from the second shoulder line 8 and the second shoulder line 8 is alpha, and the value of alpha is 70-80 degrees; a first broken line of the upper end of the shoulder big pattern block 31 from the first shoulder line 6 is vertical to the first shoulder line 6, the length is L1, and the value of L1 is 6-8 mm; the included angle between the second folding line and the first shoulder line is beta, and the value of beta is 55-65 degrees; the included angle between a first fold line of the upper end of the shoulder small pattern block from the second shoulder line and the second shoulder line is gamma, and the value of gamma is 55-65 degrees; the included angle between a first broken line of the lower end of the shoulder large pattern block from the first shoulder line and the first shoulder line is delta, the value of delta is 70-80 degrees, and the shoulder transverse pattern groove is in a flaring shape close to the shoulder; as shown in fig. 2, the shoulder thickness of the first shoulder line 6 is L2, the shoulder thickness of the second shoulder line is L3, and L2 is 3-5mm greater than L3.

As shown in fig. 3, the large shoulder block 31 and the small shoulder block 32 are both provided with sipes 9, the sipes 9 run in a zigzag shape in the transverse direction, a first sipe depth h1 from the position close to the shoulder is provided in the sipe depth direction, and the value of h1 is 2-3 mm; the depth h2 of the second cutter groove, h2 is 15-17 mm; the depth h3, h3 of the third cutter groove is 10-13 mm; the depth h4, h4 of the fourth cutter groove is 15-17 mm; three cutter grooves are arranged on each of the shoulder large pattern block 31 and the shoulder small pattern block; as shown in fig. 4, the groove wall angles of the shoulder transverse groove 5 and the shoulder longitudinal groove 4 are both epsilon, and epsilon takes the value of 8-10 degrees; the radian radius of the bottom of the groove is R1, and the R1 is 4-6 mm. Through the real vehicle test, the probability of occurrence of pattern chipping and block dropping of the tire is zero.

The bottom of the shoulder transverse pattern groove 5 is provided with a plurality of trapezoidal bosses 10, and the walking direction of the trapezoidal bosses 10 is consistent with the trend of the shoulder transverse pattern groove 5; the bottom of the shoulder longitudinal pattern groove 4 is provided with a strip-shaped boss 11, and the trend of the strip-shaped boss 11 is consistent with the trend of the shoulder longitudinal pattern groove 4; as shown in fig. 4-5, the height of the trapezoid where the trapezoid boss 10 is located is L4, L4 is 2-3mm, the length of the upper bottom of the trapezoid is L5, L5 is 1.5-2mm, the length of the lower bottom of the trapezoid is L6, L6 is 3-4mm, the height of the trapezoid boss is L7, L7 is 2-4mm, the distance between two adjacent trapezoid bosses 10 is L13, and L13 is 2-3 mm; as shown in fig. 6-7, the length of the strip-shaped boss 11 is L8, the value of L8 is 13-15mm, the width is L9, the value of L9 is 2-3mm, the height is L10, and the value of L10 is 2-4 mm. Through the real vehicle test, the probability of the crack of the tire pattern groove bottom with the trapezoid lug boss 10 at the groove bottom of the shoulder transverse groove 5 is zero; the tire with the strip-shaped lug bosses 11 is arranged at the bottom of the shoulder longitudinal groove 4, so that impurities are not easy to clamp at the bottom of the groove, and foreign matters are discharged.

The crown pattern blocks 2 are composed of crown large pattern blocks 21 and crown small pattern blocks 22 which are alternately arranged along the circumferential direction of the tread, the crown large pattern blocks 21 and the crown small pattern blocks 22 are irregular polygons, and crown transverse pattern grooves 12 are formed between the adjacent crown large pattern blocks 21 and the crown small pattern blocks 22; the crown large pattern block 21 and the crown small pattern block 22 are both provided with sipes 9, and the bottoms of the crown transverse pattern grooves 12 are provided with trapezoidal bosses 10.

The utility model provides an above is right the utility model provides a winter backhoe loader tire has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be subject to several improvements and modifications, which also fall within the scope of the claims of the present invention.

Claims

1. A winter backhoe loader tire is characterized by comprising a central pattern groove, crown pattern blocks which are positioned at two sides of the central pattern groove and are centrosymmetric, and shoulder pattern blocks which are positioned at a shoulder and are centrosymmetric, wherein a shoulder longitudinal pattern groove is formed between the adjacent crown pattern blocks and the shoulder pattern blocks; the shoulder pattern blocks are composed of large shoulder pattern blocks and small shoulder pattern blocks which are alternately arranged along the circumferential width of the tread, the large shoulder pattern blocks and the small shoulder pattern blocks are irregular polygons, and shoulder transverse pattern grooves are formed between the large shoulder pattern blocks and the small shoulder pattern blocks; the area of the upper surface of the shoulder large pattern block is 12% larger than that of the upper surface of the shoulder small pattern block, the distance between a first shoulder line where the shoulder large pattern block is located and the tread center line is larger than the distance between a second shoulder line where the shoulder small pattern block is located and the tread center line, the distance difference is L1, and the value of L1 is 6-8 mm.

2. A winter backhoe loader tire as in claim 1 wherein the upper and lower ends of the shoulder large lugs and the shoulder small lugs are both dog-legged, the angle between the first broken line from the second shoulder line at the lower end of the shoulder small lugs and the second shoulder line is α, the value of α is 70 ° -80 °; a first folding line of the upper end of the shoulder large pattern block from the first shoulder line is vertical to the first shoulder line, the length of the first folding line is L1, the included angle between the second folding line and the first shoulder line is beta, and the value of the beta is 55-65 degrees; the included angle between a first fold line of the upper end of the shoulder small pattern block from the second shoulder line and the second shoulder line is gamma, and the value of gamma is 55-65 degrees; an included angle between a first broken line of the lower end of the shoulder large pattern block from the first shoulder line and the first shoulder line is delta, and the value of delta is 70-80 degrees; the shoulder transverse groove is flared close to the shoulder.

3. A winter backhoe loader tire as in claim 1, wherein the first shoulder line has a shoulder thickness that is 3-5mm greater than the shoulder thickness of the second shoulder line.

4. A winter backhoe loader tire as in claim 1 wherein the shoulder large blocks and the shoulder small blocks are each provided with a sipe, the sipe running in a zigzag shape in the lateral direction and having a first sipe depth h1 from near the shoulder in the sipe depth direction, h1 being 2-3 mm; the depth h2 of the second cutter groove, h2 is 15-17 mm; the depth h3, h3 of the third cutter groove is 10-13 mm; the depth h4, h4 of the fourth cutting groove is 15-17 mm.

5. A winter backhoe loader tire as in claim 1 wherein the shoulder transverse groove bottom is provided with a plurality of trapezoidal projections, said trapezoidal projections running in line with the shoulder transverse groove; the bottom of the shoulder longitudinal pattern groove is provided with a strip-shaped boss, and the trend of the strip-shaped boss is consistent with that of the shoulder longitudinal pattern groove; the trapezoid bosses are 2-3mm in height, 1.5-2mm in length of the upper trapezoid bottom, 3-4mm in length of the lower trapezoid bottom, 2-4mm in height, and 2-3mm in distance between two adjacent trapezoid bosses; the length of the strip-shaped boss is 13-15mm, the width of the strip-shaped boss is 2-3mm, and the height of the strip-shaped boss is 2-4 mm.

6. A winter backhoe loader tire as in claim 1 wherein the shoulder transverse grooves and shoulder longitudinal grooves have a groove wall angle both of e, e ranging from 8 ° to 10 °; the radian radius of the bottom of the groove is R1, and the R1 is 4-6 mm.

7. A winter backhoe loader tire as in claim 5 wherein said crown blocks are comprised of alternately arranged crown large blocks and crown small blocks in the circumferential direction of the tread, said crown large blocks and crown small blocks being each an irregular polygon, crown transverse grooves being formed between adjacent crown large blocks and crown small blocks; the large pattern blocks and the small pattern blocks are provided with cutter grooves, and the transverse pattern groove bottoms of the crown parts are provided with trapezoidal bosses.