CN211918281U - A closed non-pneumatic tire - Google Patents

Abstract

The utility model belongs to the technical field of tires and discloses a closed non-pneumatic tire. In the radial direction of the tire, from outside to inside, it includes a tire crown, a sidewall, a heat dissipation hole, and a bridge support body; the tire crown includes a tread, a cap layer, a No. 1 belt layer, and a No. 2 belt layer; The tread includes tread patterns and tread grooves; the heat dissipation holes are punched after casting and molding for internal heat dissipation; the bridge support body includes a column, a main arch, an auxiliary arch, a large side arch, a small side The upright column and the auxiliary arch are connected with the main arch and jointly support the main arch. The large side arch and the small side arch are framed on both shoulders of the main arch and communicate with the main arch. The non-pneumatic tire adopts a closed design to effectively avoid sand and gravel pollution. entry of things. The tire molding adopts the mold casting process, and the bridge support body is integrally formed. The production process enables the non-pneumatic tire to have a reliable structure, good bearing properties, simple production process, automatic production, high production efficiency, and effective saving of raw materials.

Description

A closed non-pneumatic tire

technical field

The utility model belongs to the technical field of tires, in particular to a closed non-pneumatic tire.

Background technique

Since Dunlop launched the first pneumatic bicycle tire in 1888, the "sleeping" pneumatic tire for more than 40 years has been "awakened" again, and the pneumatic tire has been successfully installed on the bicycle, opening a new era of pneumatic tires. To date, pneumatic tires have dominated the world tire market for more than 100 years, mainly because pneumatic tires have four main advantages over rigid wheels: low vertical stiffness, low contact pressure, low mass, and low performance on rough surfaces. energy loss. However, with the development of the times and the improvement of people's requirements for comfort, the shortcomings of pneumatic tires are gradually revealed: the internal air pressure of pneumatic tires needs timely maintenance, the puncture tires cause catastrophic damage, and the manufacturing process is complicated. Therefore, some engineers have proposed replacing the air of pneumatic tires by filling elastomers or constructing polygonal spokes, resulting in a series of non-pneumatic wheels such as Tweel wheels, honeycomb spoked wheels, and mechanically elastic wheels. The invention of non-pneumatic tires broke a series of criticisms of traditional pneumatic tires, and effectively improved the fuel economy, handling stability and ride comfort of automobiles. However, while the new non-pneumatic tires provide these conveniences, they also have the disadvantages of poor shock absorption, bearing capacity and heat dissipation. In particular, the non-pneumatic tire support structure is exposed. If foreign objects such as sand, gravel and soil enter, it will affect the elastic performance of the support body. , so as to affect the driving safety or even the support structure is directly stuck.

The closed non-pneumatic tire of the utility model significantly improves the above shortcomings. The inflation pressure of the pneumatic tire is replaced by the bridge support body of the inner support structure, which avoids the defect of the traditional pneumatic tire being prone to puncture. The whole tire adopts a closed design, on the one hand, it avoids the entry of sand and gravel dirt during driving, enhances the internal protection performance of non-pneumatic tires, and improves the service life of the tire; Defects of large air resistance, and effectively reduce noise. The heat dissipation holes are punched after the tire is formed, which can effectively improve the heat dissipation performance of the non-pneumatic tire. Internal support structure The bridge support body is designed to imitate the open shoulder arch structure of Zhaozhou Bridge, which effectively improves the load-bearing performance of non-pneumatic tires and enhances the structural stability. The unique open-shoulder structure of Zhaozhou Bridge helps the large arc arch to adjust the load distribution, making the overall bearing capacity of the bridge body stronger. This structure is applied to the design of a closed non-pneumatic tire bridge support body with the same mechanical characteristics, which significantly improves the load-bearing performance of the non-pneumatic tire. Therefore, the unique structural feature of Zhaozhou Bridge is the improvement of the overall performance of the non-pneumatic tire. Design basis is provided.

Utility model content

The technical problem to be solved by the utility model: under the common load and driving conditions of traditional pneumatic tires, the internal bridge support body is used to replace the inflation pressure of the pneumatic tire to avoid the occurrence of tire blowout; under the common load and driving conditions of traditional non-pneumatic tires Under the circumstance, the bearing capacity of the non-pneumatic tire is improved and the structural stability is enhanced; for the situation where the spokes of the traditional non-pneumatic tire are exposed, the utility model provides an internal closed design, which avoids the entry of sand and gravel dirt on the one hand, and effectively enhances the non-pneumatic tire. The internal protection performance of the tire increases the service life of the tire; on the other hand, it avoids the defect that large air resistance is easily generated during driving, and effectively reduces noise; the bridge support body is circumferentially surrounded, penetrates each other, and is integrally formed, and the production process is simple ; The pouring process adopts multi-hole pouring at the same time, and the production efficiency is high.

The technical scheme adopted by the utility model is as follows:

A closed non-pneumatic tire structure, from outside to inside, sequentially includes a tire crown, sidewalls, heat dissipation holes, and bridge supports; the tire crown includes a tread, a cap layer, a No. 1 belt layer, and a No. 2 belt layer; the tread includes tread patterns and tread grooves; the bridge support body includes uprights, main arches, auxiliary arches, large side arches, and small side arches.

Further, the heat dissipation hole is punched after casting and molding, and has a good heat dissipation function.

Further, the bridge-type support column and the auxiliary arch communicate with the main arch and jointly support the main arch, the large side arch and the small side arch are framed on both shoulders of the main arch and communicate with the main arch.

Further, the non-pneumatic tire adopts a closed design. During the process of casting the bridge-type support body with polyurethane, the sidewall is directly closed and formed, so that the internal support structure is better protected, and the air resistance during driving can be effectively reduced. noise during driving.

Further, the tread of the closed non-pneumatic tire is made of low rolling resistance rubber material, and is bonded to the bridge-type support body by using polyurethane glue.

Further, the bridge support body is made of high-modulus polyurethane material.

Further, the main arch, auxiliary arch and column of the bridge-type support body are formed with the same width, so as to ensure the balanced force of the main arch, the auxiliary arch and the column, and improve the structural life.

Further, the tire molding adopts a mold casting process, and the mold is directly poured and formed through a circumferentially surrounding mold, avoiding the process of longitudinal design, and the production process adopts multi-hole simultaneous casting, the production process is simple, the production efficiency is high, and it is easy to realize automation. Production.

Compared with the prior art, the beneficial effects of the present utility model are:

(1) The non-pneumatic tire of the present invention uses an internal support structure bridge support to replace the inflation pressure of the traditional pneumatic tire, avoiding the defect of the traditional pneumatic tire being prone to puncture.

(2) The non-pneumatic tire of the present utility model adopts a closed design, and there is no exposed wheel spoke. On the one hand, it can effectively avoid the entry of sand and gravel dirt to affect the structural performance of the bridge support body; on the other hand, the automobile When driving at high speed, the exposed spokes receive great air resistance. The utility model adopts a closed design, which effectively reduces the air resistance of the tires during driving and significantly reduces the noise generated during driving.

(3) The non-pneumatic tire of the utility model has a simple production process and a simple mold making, which can realize the integral molding of the bridge support structure, and produce a non-pneumatic tire that meets the requirements at one time. The production efficiency is high, and mass production can be carried out.

(4) The closed non-pneumatic tire is made of high-modulus polyurethane material, which has high strength, high hardness, fatigue resistance and excellent shock absorption and high temperature resistance; the tread is made of low rolling resistance rubber material, which has wear-resistant properties. Damage, wet and slip resistance, strong grip and other characteristics.

(5) The bridge support body is designed to imitate the open-shouldered arch structure of Zhaozhou Bridge. Through simulation analysis, the bearing capacity of the non-pneumatic tire is significantly enhanced, the stability of the internal structure is improved, and the internal load distribution of the tire is more uniform.

Description of drawings

1 is a three-dimensional view of a closed non-pneumatic tire of the present utility model;

Figure 2 is a front view of a closed non-pneumatic tire of the present utility model;

3 is a sectional view of a closed non-pneumatic tire of the present invention;

4 is a schematic structural diagram of a bridge-type support body of the present invention;

FIG. 5 is a schematic diagram of the structure of the crown of a closed non-pneumatic tire of the present invention.

In the figure: 1, crown; 2, sidewall; 3, cooling hole; 4, bridge support body; 1-1, tread; 1-2, cap layer; 1-3, No. 1 belt layer; 1-4, No. 2 belt layer; 4-1, column; 4-2, main arch; 4-3, auxiliary arch; 4-4, large side arch; 4-5, small side arch; 1-1a, Tread pattern; 1-1b, tread pattern groove.

Detailed ways

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

The utility model proposes a closed non-pneumatic tire structure, which flexibly uses the Zhaozhou Bridge open-shoulder arch structure foundation.

As shown in Figure 1, the closed non-pneumatic tire adopts a closed design as a whole. On the one hand, it avoids the entry of sand, gravel and dirt during driving, and improves the protection performance of the internal support structure; on the other hand, it effectively reduces the The air resistance during driving is reduced and the noise generated during driving is significantly reduced.

As shown in FIG. 2 , the heat dissipation holes of the closed non-pneumatic tire are punched after the tire is formed, which helps to dissipate heat inside the tire.

As shown in FIG. 3 , the bridge-type support body is cast in a circumferential direction, and the internal bridge-type support body structure is integrally formed, and the production process is simple; the bridge-type support body is formed by porous simultaneous casting, which has high production efficiency, saves raw materials and Automatic production can be realized.

As shown in FIG. 4 , the pillars and auxiliary arches of the bridge-type support are communicated with the main arch and jointly support the main arch. The large side arch and the small side arch are framed on both shoulders of the main arch and communicate with the main arch; the bridge The bridge-type support body is designed with reference to the open-shouldered arch structure of Zhaozhou Bridge and improved, which greatly improves the internal bearing capacity of the bridge-type support body; the bridge-type support body columns, auxiliary arches and main arches have the same width, making The load is evenly distributed during driving; the large side arches and the small side arches on the two shoulders of the main arch of the bridge support body are designed with equal dimensions, which is convenient to improve the internal bearing capacity of the tire; the top of the bridge support body mold has a plurality of The pouring mouth can directly pour polyurethane, so that the bridge support structure can be integrally formed and directly sealed.

As shown in FIG. 5 , a schematic diagram of the crown structure of a closed non-pneumatic tire includes a tread, a cap layer, a No. 1 belt layer, and a No. 2 belt layer, wherein the tread includes a tread pattern, a tread pattern Groove; the tread is made of wet-slip, wear-resistant low rolling resistance rubber material, and is bonded to the bridge support structure with polyurethane glue.

The above are only the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Without departing from the technical principles of the present invention, any obvious improvement, replacement or modification that can be made by those skilled in the art is It belongs to the protection scope of the present invention.

Claims (9)

1. A closed non-pneumatic tire is characterized by comprising a tire crown (1), a tire side (2), radiating holes (3) and a bridge type supporting body (4) from outside to inside; the tire crown (1) comprises a tire tread (1-1), a cap ply layer (1-2), a No. 1 belt ply layer (1-3) and a No. 2 belt ply layer (1-4); the tread (1-1) comprises a tread pattern (1-1a) and a tread groove (1-1 b); the bridge type supporting body (4) comprises upright columns (4-1), a main arch (4-2), an auxiliary arch (4-3), a large side arch (4-4) and a small side arch (4-5).

2. A closed non-pneumatic tyre as claimed in claim 1, characterized in that said heat dissipation portholes (3) are perforated after the moulding by casting.

3. A closed non-pneumatic tyre as claimed in claim 1, wherein said upright (4-1) and secondary arches (4-3) communicate with the main arch (4-2) and jointly support the main arch (4-2), the large side arch (4-4) and the small side arch (4-5) being mounted on the two shoulders of the main arch (4-2) and communicating with the main arch (4-2).

4. A closed non-pneumatic tyre as claimed in claim 1, characterized in that said tread (1-1) is made of a low rolling resistance rubber material and is bonded to said bridge support (4) by means of a polyurethane glue.

5. A closed non-pneumatic tire as in claim 1, wherein said bridge support is of a high modulus polyurethane material.

6. A closed non-pneumatic tyre as claimed in claim 1, characterized in that said bridge support columns (4-1), main arches (4-2) and secondary arches (4-3) are shaped with equal width.

7. A closed non-pneumatic tyre as claimed in claim 1, wherein said tyre is formed by a mould casting process, wherein said bridge support structure is circumferentially and circumferentially interconnected, said upright (4-1), said main arch (4-2), said secondary arch (4-3), said large side arch (4-4) and said small side arch (4-5) are longitudinally interconnected, and said bridge support is integrally formed.

8. A closed non-pneumatic tire as in claim 7, wherein said tire casting process uses multiple simultaneous casting.

9. Closed non-pneumatic tyre according to claim 7, characterised in that it is of closed design, the sidewalls (2) being closed directly during the casting of the bridge support (4) with polyurethane.

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