Pneumatic tire

Abstract

The utility model provides a pneumatic tire which comprises a tread layer, a clamping layer and an airtight combination layer, the clamping layer is arranged between the tread layer and the airtight combination layer, the pneumatic tire comprises a belted layer and a cord thread layer, the belted layer is arranged on the inner side of the tread layer, an edge covering layer and / or a lower cushion layer are / is arranged on the edge portion of the belted layer, and the cord thread layer is arranged on the inner side of the belted layer. An isolating rubber sheet is arranged between the two; the airtight combination layer comprises an airtight layer, a transition layer and a bonding layer which are sequentially arranged from inside to outside, and the airtight combination layer is connected to the inner side of the cord thread layer through the bonding layer. The pneumatic tire disclosed by the utility model solves the problems that the tire body of the tire in the prior art is poor in stability, and the tire body is easy to wear and scratch, and can be widely applied to harsh working environments such as a port container reach stacker and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tire technical field, especially a pneumatic tire. BACKGROUND

[0002] The port reach stacker tire is mainly used for loading and unloading, stacking and short-distance transportation of containers, and the stability of the tire is required to be high because the frequent steering and reversing operations in the limited space during the operation, in addition, the ground conditions in the port area are poor, and there are sharp abrasive materials such as gravel and metal fragments, which can easily cause the carcass to be abraded or scratched, damage the stability of the carcass structure, and shorten the service life of the tire.

[0003] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0004] The utility model discloses a pneumatic tire which optimizes the structure of the existing port reach stacker tire, improves the stability of the carcass during use, enhances the impact resistance of the carcass, improves the wear resistance and scratch resistance of the tread, and solves the technical problems of the prior art.

[0005] To achieve the above technical purpose, the basic idea of the technical scheme adopted by the utility model is as follows:

[0006] A pneumatic tire comprises a tread layer, a reinforcing layer and a gas-tight combined layer, the reinforcing layer is arranged between the tread layer and the gas-tight combined layer, and comprises a belt layer and a cord layer, the belt layer is arranged on the inner side of the tread layer, the edge of the belt layer is provided with a turn-up layer and / or an underlayer, the cord layer is arranged on the inner side of the belt layer, and an isolation rubber sheet is arranged between the belt layer and the cord layer; the gas-tight combined layer comprises a gas-tight layer, a transition layer and an adhesive layer, the gas-tight layer, the transition layer and the adhesive layer are arranged in sequence from inside to outside, and the adhesive layer connects the gas-tight combined layer to the inner side of the cord layer.

[0007] Further, the top of the tread layer is a crown, the tread layer extends downward along the two sides of the crown to form a shoulder and a sidewall in sequence, and a reinforcing layer is additionally arranged in the shoulder and / or the sidewall.

[0008] Further, the crown is uniformly provided with anti-skid lines and anti-skid grooves.

[0009] Further, the thickness of the tread layer at the sidewall is 8-20 mm.

[0010] Further, the cord layer is formed by overlapping a plurality of cords, and the arrangement angle between the cords in the cord layer ranges from 5 o -40 o .

[0011] Further, the belt layer is formed by overlapping a plurality of high-strength cords, and the arrangement angle between the cords in the belt layer ranges from 40 o -80o .

[0012] Further, the sub-port is located at the lower part of the tire side, and a reinforcing structure is arranged at the sub-port to prevent wear and tear and improve pressure resistance.

[0013] Further, the reinforcing structure comprises a ring body, a rubber core and a cladding layer, the cladding layer comprises a first cladding layer and a second cladding layer, the first cladding layer is arranged outside the ring body, the ring body with the first cladding layer is bonded with the rubber core to form a primary cladding body, and the second cladding layer is arranged outside the primary cladding body.

[0014] Further, the ring body comprises a plurality of high-strength steel wire rings, the first cladding layer is wrapped around the ring body, and the second cladding layer is partially wrapped around the ring body and the rubber core to form a double-layer wrapped sub-port reinforcing structure.

[0015] The utility model provides a pneumatic tire, compared with prior art, has the following beneficial effects:

[0016] (1) the overall resistance and durability of the tire are enhanced through the multi-layer composite structure design of the tread layer, the reinforcing layer and the air-tight combined layer, the structure of the belt layer and the cord layer in the reinforcing layer improves the bearing strength and wear resistance of the tire structure, effectively reduces the possibility of tire body wear and scratch, the multi-layer structure of the air-tight layer, the transition layer and the adhesive layer in the air-tight combined layer effectively prevents gas leakage, improves the sealing performance, further improves the impact resistance of the tire body and improves the running stability of the tire;

[0017] (2) the reinforcing layer is arranged at the shoulder and the tire side to enhance the local deformation resistance, improve the stability and bearing capacity of the tire under complex road conditions, reduce the local wear of the tire body, avoid shoulder empty delamination, and prolong the service life of the tire.

[0018] (3) the sub-port is a key part of the connection between the tire and the rim and is prone to pressure and friction damage, the reinforcing structure arranged at the sub-port can significantly improve the pressure resistance and wear resistance, especially under heavy load conditions, the service life of the tire body can be prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the overall structure schematic diagram of the utility model;

[0020] Figure 2 is the enlarged view of the area of the belt layer in the utility model;

[0021] Figure 3 is the enlarged view of the area of the reinforcing structure in the utility model.

[0022] In the diagram: 1. Tread layer; 2. Reinforcing layer; 21. Belt layer; 22. Cord layer; 23. Separator film; 3. Airtight composite layer; 31. Airtight layer; 32. Transition layer; 33. Adhesive layer; 4. Shoulder; 5. Sidewall; 6. Bead; 61. Reinforcing structure; 611. Bead body; 612. Rubber core; 613. First covering layer; 614. Second covering layer. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] As attached Figures 1-3 As shown, a pneumatic tire includes a tread layer 1, a reinforcing layer 2, and an airtight combination layer 3. The reinforcing layer 2 is located between the tread layer 1 and the airtight combination layer 3, and includes a belt layer 21 and a cord layer 22. The belt layer 21 is located inside the tread layer 1, and the belt layer 21 has an edge layer and / or a lower pad layer at its edge. The cord layer 22 is located inside the belt layer 21, and a separating film 23 is provided between the two. The airtight combination layer 3 includes an airtight layer 31, a transition layer 32, and an adhesive layer 33. The airtight layer 31, the transition layer 32, and the adhesive layer 33 are arranged sequentially from the inside to the outside, and the adhesive layer 33 connects the airtight combination layer 3 to the inside of the cord layer 22.

[0027] It is understood that the utility model enhances the overall endurance strength and durability of the tire through the multi-layer composite structure design of the tread layer 1, the sandwiched reinforcing layer 2 and the air-tight combined layer 3, wherein the structure of the belt layer 21 and the cord layer 22 in the sandwiched reinforcing layer 2 improves the bearing strength and wear resistance of the tire structure, which can effectively reduce the possibility of tire body wear and scratch, the multi-layer structure of the air-tight combined layer 3 adopting the air-tight layer 31, the transition layer 32 and the adhesive layer 33 effectively prevents gas leakage, improves the sealing performance and further improves the impact resistance of the tire body and improves the running stability of the tire.

[0028] As an embodiment of the present application, the bottom of the tread layer 1 is provided with a base rubber layer, the structure of the base rubber layer is concave in the middle and convex on both sides, which reduces the shoulder heat generation, effectively absorbs the impact vibration transmitted by the road surface, disperses the stress transmitted by the tread pattern block, and reduces the damage of the cord layer 22. The hardness of the base rubber layer is between the tread layer 1 and the belt layer 21, forming a gradual rigid transition, expanding the force-bearing range of the tire and improving the adaptability of the tire to complex road conditions.

[0029] As an embodiment of the present application, the top of the tread layer 1 is a crown, the tread layer 1 extends downward along both sides of the crown to form a shoulder 4 and a side 5 in turn, and a reinforcing layer is additionally arranged inside the shoulder 4 and / or the side 5.

[0030] The shoulder 4 and / or the side 5 is provided with a reinforcing layer, which can preferably be provided with a reinforcing layer at the shoulder 4 and the side 5 at the same time, enhancing the local deformation resistance of the tire, improving the stability and load-bearing capacity of the tire under complex road conditions, reducing local wear, and prolonging the service life of the tire.

[0031] The side 5 can be designed as a thick side structure of bias-ply tire in the design process. Optionally, the thickness of the prepared rubber of the side 5 is 8-20mm, and the thickness of the side 5 can be specifically selected by those skilled in the art according to the relationship between the thickness and flexibility of the tire body and the structural strength.

[0032] It is easy to understand that the crown is uniformly provided with anti-skid lines and anti-skid grooves. The design of the anti-skid lines and the anti-skid grooves can improve the grip and handling performance of the tire on wet and slippery road surfaces; the anti-skid grooves are helpful for drainage and heat dissipation, reducing the risk of skidding. Optionally, those skilled in the art can select and design the shape and type of the anti-skid lines and the anti-skid grooves according to actual needs, which is not limited in the present application, as long as the tire can bear uniform stress and have good anti-skid function.

[0033] Further, the thickness of the tread layer 1 at the side 5 is 8-20mm. Controlling the thickness of the side 5 within the reasonable range can take into account the flexibility and structural strength of the tire; on the one hand, it avoids excessive thickness of the side 5 leading to increased weight and cost, and on the other hand, it avoids excessive thinness of the side 5 affecting the impact resistance.

[0034] As shown in the drawings,Figure 1 As shown, the reinforcing layer 2 is arranged between the tread layer 1 and the air-tight combined layer 3, and the reinforcing layer 2 comprises a belt layer 21 and a cord layer 22, wherein the arrangement of the belt layer 21 and the cord layer 22 affects the endurance, wear resistance and stability of the tire.

[0035] As an embodiment of the present application, the cord layer 22 is formed by a plurality of layers of cords arranged in an overlapping manner, and the arrangement angle of the cords in the cord layer 22 ranges from 5° to 15°. o -40 o The overlapping arrangement of the cord layer 22 can improve the impact resistance and wear resistance of the tire.

[0036] Further, the cord layer 22 comprises a plurality of layers of nylon 66 cords, and the arrangement angle of the cords ranges from 10° to 27°. o -27 o The arrangement angle range of the cords can help balance the longitudinal support force and the lateral stability of the tire, and improve the deformation recovery ability and fatigue life of the tire.

[0037] As an embodiment of the present application, as shown in the accompanying drawings, Figure 2 The belt layer 21 is formed by a plurality of layers of high-strength cords arranged in an overlapping manner, and the arrangement angle of the cords in the belt layer 21 ranges from 40° to 80°. o -80 o The high-strength cords can enhance the load-carrying capacity and wear resistance of the belt layer 21.

[0038] Further, the belt layer 21 comprises a plurality of layers of high-strength steel cord, and the arrangement angle of the steel cord ranges from 55° to 75°. o -75 o The steel cord in the arrangement angle range can improve the lateral rigidity of the tire, prevent the deformation of the tread, and improve the stability and tread-ground performance of the tire at high speed.

[0039] Further, the belt layer 21 is provided with a turn-up layer and / or an underlayer on the side. The turn-up layer and the underlayer can be preferably a film layer for adhesion, and the structural design of the turn-up layer and the underlayer can enhance the stability of the tire structure.

[0040] As an embodiment of the present application, the air-tight combined layer 3 comprises an air-tight layer 31, a transition layer 32 and an adhesion layer 33 arranged in sequence from inside to outside, wherein the adhesion layer 33 is connected with the cord layer 22, and further connects the air-tight combined layer 3 to other structures of the tire body. For example, in the design of the air-tight combined layer 3, the thickness of the air-tight layer 31 is 2-3 mm, the thickness of the transition layer 32 is 1-3 mm, and the thickness of the adhesion layer 33 is 0.5-1.5 mm. The air-tight combined layer 3 formed by the air-tight layer 31, the transition layer 32 and the adhesion layer 33 with appropriate thicknesses can maximize the air-tightness and enhance the adhesion of the air-tight combined layer 3 and other parts (the cord layer 22) of the tire body.

[0041] As shown in the accompanying drawings Figure 3 The pneumatic tire further comprises a bead 6, which is the part of the tire in contact with the wheel rim and allows the tire to be fixed to the wheel rim. The bead 6 is located at the lower inward extension of the sidewall 5, and a reinforcing structure 61 is arranged at the bead 6 to prevent wear and improve pressure resistance.

[0042] Further, the reinforcing structure 61 comprises a bead body 611, a rubber core 612, and a cladding layer, which comprises a first cladding layer 613 and a second cladding layer 614. The first cladding layer 613 is arranged outside the bead body 611, and the bead body 611 with the first cladding layer 613 is bonded with the rubber core 612 to form a primary cladding body. The second cladding layer 614 is arranged outside the primary cladding body. The double-layer cladding structure improves the sealing performance and fatigue resistance of the bead 6. The first cladding layer 613 protects the bead body 611, and the second cladding layer 614 further strengthens the overall structure, ensuring that the bead 6 region is well combined with the main body of the tire, preventing delamination or air leakage, reducing or even avoiding the bead 6 from bursting, and improving the stability of the carcass structure.

[0043] As shown in the accompanying drawings Figure 3 The bead body 611 comprises a plurality of high-strength steel wire beads. The first cladding layer 613 is wrapped around the bead body 611, and the second cladding layer 614 is partially wrapped around the bead body 611 and the rubber core 612 to form a double-layer wrapped bead reinforcing structure 61. In this embodiment, high-strength steel wire beads are used to provide reliable structural support and enhance the overall strength of the tire. The double-layer wrapping method improves the safety and long-term reliability of the tire.

[0044] Further, the first cladding layer 613 and the second cladding layer 614 are steel cord fabrics with high toughness and good wear resistance, which improve the support strength of the bead 6 and the wear resistance and pressure resistance of the bead.

[0045] Compared with the prior art, the above-mentioned embodiments of the present utility model have the following beneficial technical effects:

[0046] The multi-layer composite structure design of the tread layer 1, the reinforcing layer 2, and the air-tight combined layer 3 enhances the overall resistance and durability of the tire. The structure of the belt layer 21 and the cord layer 22 in the reinforcing layer 2 improves the bearing strength and wear resistance of the tire structure, effectively reducing the possibility of carcass wear and damage. The multi-layer structure of the air-tight layer 31, the transition layer 32, and the adhesive layer 33 in the air-tight combined layer 3 effectively prevents gas leakage, improves the sealing performance, further improves the impact resistance of the carcass, and improves the running stability of the tire.

[0047] The reinforcing layer arranged at the shoulder 4 and the sidewall 5 enhances the local deformation resistance, improves the stability and load capacity of the tire under complex road conditions, reduces the local wear of the tire body, avoids shoulder empty delamination, and is beneficial to prolong the service life of the tire.

[0048] The sub-port 6 is a key part connected to the rim on the tire and is easily damaged by pressure and friction, and the reinforcing structure 61 arranged at the sub-port 6 can significantly improve the pressure resistance and wear resistance of the sub-port 6, avoid the sub-port 6 from bursting, especially under heavy load conditions, and prolong the service life of the tire body.

[0049] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and equivalent embodiments with equivalent changes can be obtained. The implementation solutions in the above embodiments can be further combined or replaced. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the scope of the present application.

Claims

1. A pneumatic tire characterized by, The tire comprises a tread layer, a reinforcing layer and a gas-tight combined layer, the reinforcing layer is arranged between the tread layer and the gas-tight combined layer, the tire comprises a belt layer and a cord layer, the belt layer is arranged inside the tread layer, the belt layer is provided with a turn-up layer and / or an underlayer, the cord layer is arranged inside the belt layer, and a separation rubber sheet is arranged between the belt layer and the cord layer. The gas-tight combined layer comprises a gas-tight layer, a transition layer and an adhesive layer, the gas-tight layer, the transition layer and the adhesive layer are arranged from inside to outside, and the adhesive layer connects the gas-tight combined layer to the inside of the cord layer.

2. A pneumatic tire according to claim 1, wherein, The top of the tread layer is a crown, the tread layer extends downward along both sides of the crown to form a shoulder and a sidewall in sequence, and a reinforcing layer is arranged inside the shoulder and / or the sidewall.

3. A pneumatic tire according to claim 2, wherein, The crown is uniformly provided with anti-skid lines and anti-skid grooves.

4. A pneumatic tire according to claim 2 wherein, The thickness of the tread layer at the sidewall is 8-20 mm.

5. A pneumatic tire according to any one of claims 1-4, characterized in that, The cord layer is formed by a plurality of cord layers arranged in an overlapping manner, and the arrangement angle between the cords of the cord layer ranges from 5 o -40 o .

6. A pneumatic tire according to claim 5 wherein, The belt is formed from a plurality of high strength cords arranged in overlapping layers, the arrangement angle between the belt cords ranges from 40 o -80 o .

7. A pneumatic tire according to any one of claims 1-4, wherein, The tire further comprises a bead, which is arranged at the lower part of the sidewall and extends inward, and the bead is provided with a reinforcing structure for preventing wear and improving pressure resistance.

8. A pneumatic tire according to claim 7, wherein, The reinforcing structure comprises a ring body, a rubber core and a coating layer, the coating layer comprises a first coating layer and a second coating layer, the first coating layer is arranged outside the ring body, the ring body with the first coating layer is adhered to the rubber core to form a primary coating body, and the second coating layer is arranged outside the primary coating body.

9. A pneumatic tire according to claim 8, wherein, The ring body comprises a plurality of high-strength steel wire rings, the first coating layer is wrapped around the ring body, and the second coating layer partially wraps the ring body and the rubber core to form a double-layer wrapped bead reinforcing structure.

Images