CN212386247U - Meridian aircraft tire - Google Patents

Abstract

The utility model provides a radial aircraft tire, which belongs to the technical field of aircraft tires and comprises a tire body, a tire bead, a steel wire ring arranged in the tire bead, a tire body cord for wrapping the steel wire ring, a filling rubber sheet arranged outside the tire body cord and below the tire bead, a side rubber sheet arranged outside the tire body cord, and a wear-resistant rubber sheet arranged at the bottom of the tire bead; the tire comprises a tire body cord, a shoulder cushion rubber sheet, a winding belted layer, a corrugated protection layer and a tire tread rubber layer, wherein the shoulder cushion rubber sheet is arranged on the outer side of the tire body cord and at the top of the tire body, the winding belted layer is arranged above the shoulder cushion rubber sheet, the corrugated protection layer is arranged above the winding belted layer, and the tire tread rubber layer is arranged. The utility model provides a current aircraft tire great at the tire bead wearing and tearing volume under the great rate condition of sinking, take place tire displacement phenomenon easily to cause the technical problem of potential safety hazard, have the characteristics that the security performance is high, high-speed performance and resistant year performance are good.

Description

Meridian aircraft tire

Technical Field

The utility model belongs to the technical field of the aircraft tire, especially, relate to a meridian aircraft tire.

Background

The aircraft tire is a very important landing part of an airplane and has the characteristics of large load, high speed, large deformation and high inflation internal pressure. Therefore, the aircraft tire must meet the conditions of impact resistance, puncture resistance, temperature rise resistance, and capability of withstanding the strong centrifugal force generated by the high-speed takeoff of the aircraft and the huge impact force at the moment of landing. Aircraft tires are classified into bias aircraft tires and radial aircraft tires. Among them, radial aircraft tires are more prominent in various properties than bias aircraft tires, and therefore, radial aircraft tires have been used as substitutes for conventional bias tires for aircraft landing gear components.

Chinese patent CN110722935A discloses a radial aircraft tire bead structure resistant to high-speed fatigue, which comprises steel wire rings respectively arranged in tire beads at two sides, steel wire ring cord fabric strips, bead core wrapping cloth, a bead core rubber sheet, a tire body cord fabric layer and an airtight rubber layer filled in a tire cavity, wherein the steel wire ring cord fabric strips, the bead core wrapping cloth, the bead core rubber sheet and the tire body cord fabric layer are sequentially wrapped on the steel wire rings from inside to outside, and a layer of bead wrapping cloth layer is arranged at the lower part of each tire bead to wrap the. The structure can disperse the stress of the tire bead part by mutually staggering the turn-up end points of 4 inner side cord fabric layers according to the requirement of the invention and arranging the buffer rubber sheets, the tire bead rubber sheets and the tire bead reinforcing rubber sheets among the cord fabric layers, prevent the phenomena of delamination and bulging among the cord fabric layers, the turn-up end parts of the cord fabric layers and the side rubber layers of the cord fabric layers, improve the stability of the tire bead and improve the high-speed fatigue resistance of the tire.

However, the radial aircraft tire with the bead structure has a large bead wear under a condition of a large sinking rate, and a tire displacement phenomenon is easy to occur, thereby causing a potential safety hazard.

Disclosure of Invention

The utility model discloses the tire bead wearing and tearing volume is great under great rate of sinking condition to foretell radial aircraft tire that has above-mentioned tire bead structure, takes place tire displacement phenomenon easily to cause the technical problem of potential safety hazard, provide a radial aircraft tire that has that the security performance is high, high-speed performance and resistant load capacity are good.

In order to achieve the above object, the utility model discloses a technical scheme be:

the utility model provides a radial aircraft tire, including matrix, tire bead, still include the steel wire winding that sets up in the tire bead, the matrix cord of cladding the steel wire winding, set up in the matrix cord outside and the packing film of tire bead below, set up in the side wall film of the matrix cord outside, set up in the wear-resisting film of tire bead bottom; and

the tire cord is characterized in that the tire cord comprises a shoulder cushion rubber sheet arranged on the top of the tire body, a winding belted layer arranged above the shoulder cushion rubber sheet, a corrugated protection layer arranged above the winding belted layer, and a tread rubber layer arranged above the corrugated protection layer.

Preferably, the number of layers of the wound belt layers is 6 to 8, which forms an angle of 10 ° to 20 ° with the tire circumferential direction, and the wound belt layers are wound to form an annular cylindrical shape.

Preferably, each of the winding belt layers is formed by winding a single belt strip with 10mm after extrusion and rubberizing of 7 cords.

Preferably, the winding belt layer comprises 2 layers in one winding period, and the width of the winding belt layer is gradually reduced from layer to layer in the winding period of the winding belt layer, and the winding belt layer is wound in half-lap mode in an equal difference mode.

Compared with the prior art, the utility model discloses an advantage and beneficial effect lie in:

the utility model provides a radial aircraft tire has the characteristics that the security performance is high, high speed performance and resistant load performance are good.

Drawings

FIG. 1 is a schematic structural view of a radial aircraft tire of the present invention;

FIG. 2 is a schematic structural diagram of the corrugated protective layer of the present invention;

FIG. 3 is a top view of the corrugated protective layer of the present invention;

FIG. 4 is a schematic view of the winding and unwinding of the wound belt package of the present invention;

in the above figures: 1. a bead ring; 2. a carcass cord; 3. filling the film; 4. a sidewall rubber sheet; 5. a wear-resistant rubber sheet; 6. a shoulder pad film; 7. winding a belt ply; 8. a corrugated protective layer; 9. a tread rubber layer; 10. aramid fiber yarns; 11. and (5) rolling the rubber sheet.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in fig. 1, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b): as shown in fig. 1, the present embodiment exemplifies a radial aircraft tire, which includes a tire body, a tire bead, a bead ring 1 disposed in the tire bead, a tire body cord 2 covering the bead ring 1, a filling rubber sheet 3 disposed outside the tire body cord 2 and below the tire bead, a sidewall rubber sheet 4 disposed outside the tire body cord 2, and a wear-resistant rubber sheet 5 disposed at the bottom of the tire bead; and a shoulder cushion rubber sheet 6 arranged on the outer side of the tire body cord 2 and at the top of the tire body, a winding belted layer 7 arranged above the shoulder cushion rubber sheet 6, a corrugated protection layer 8 arranged above the winding belted layer 7, and a tread rubber layer 9 arranged above the corrugated protection layer 8. The radial aircraft tire has the advantages that the abrasion-resistant rubber sheet 5 is arranged, so that the tire bead abrasion loss of the radial aircraft tire under the condition of a large sinking rate is small, the tire body cord fabric is not damaged, the tire does not have the displacement phenomenon, and the functions of protecting the tire bead and preventing the displacement are realized. Make meridian aircraft tire have anti prick, can turn over new characteristics through setting up ripple protective layer 8, be favorable to improving aircraft tire's high speed performance, ripple protective layer 8 can be used to tighten up belted layer group, provide tread and belted layer transition layer, optimize structural design, it prevents the pricked layer as aircraft tire simultaneously, can effectively improve aircraft tire's the pricked characteristic of preventing, effectively improve the homogeneity of stress distribution on the belted layer width, reduce belted layer edge stress, thereby the phenomenon of coming to nothing in belted layer edge has been solved.

As shown in fig. 2 and 3, in order to prevent the quality problem of rubber thread separation or layer-to-layer delamination of the tire, the corrugated protection layer 8 comprises an aramid thread 10 and a calendering rubber sheet 11 coated outside the aramid thread 10; the corrugated protection layer 8 comprises 108 aramid fiber wires 10 arranged side by side and 120 aramid fiber wires 10, and the distance between every two adjacent aramid fiber wires 10 is 2.5-3.0 mm. The aramid fiber line 10 is used as the main material of the radial aircraft tire corrugated protective layer 8 of the corrugated protective layer 8, the material has the performance characteristics of high tensile strength and higher stress at definite elongation, and the aramid fiber line corrugated protective layer 8 can prevent the quality problem of glue line separation or layer-to-layer delamination at the position of the corrugated protective layer 8 under the severe use conditions of high load and high speed of the aircraft tire.

Furthermore, the wave amplitude of the corrugated protective layer 8 is 8-10mm, the wavelength is 28-32mm, and the thickness is 2.3-3.0 mm.

Preferably, the corrugated protective layer 8 is laid on the retreading base rubber of the winding belt layer 7, the butt joint angle is 45 degrees, and the interface part is covered with a thin rubber sheet.

As shown in FIG. 4, in order to satisfy the requirement of the tire for a large load and an ultra high speed, the number of layers of the winding belt layer 7 is 6 to 8, which forms an angle of 10 to 20 with the circumferential direction of the tire, and the winding belt layer 7 is wound to form a toroidal cylindrical shape. This wound belt layer 7 has a spiral layer formed by spirally winding a non-stretchable and highly elastic nylon/aramid composite cord having a tensile strength of 1500MPa or more in the circumferential direction, and the toroidal cylindrical wound belt layer 7 provides the pneumatic aircraft tire with impact resistance and load resistance. The winding belt layer 7 plays a good role in tightening the tire body and the tire crown part, the centrifugal force of the crown part is greatly reduced, the problem of tire body expansion is effectively solved, the performance requirements of large load and ultrahigh speed of the tire can be met, and the aviation tire can remarkably improve the partial abrasion of the tire shoulder part caused by 'dragging abrasion'.

Furthermore, each layer of winding belt layer 7 is formed by winding a single belt strip with the length of 10mm after 7 cords are extruded and coated with glue.

Preferably, the winding belt layer 7 includes 2 layers per winding cycle, and the winding belt layer 7 is wound in half-lap winding in an equal step with the width decreasing layer by layer while changing the winding cycle.

The radial aircraft tire has the advantages that through the improvement of the structure, under the condition of optimizing the weight of a tire body, the high-speed resistance and impact resistance of the tire are ensured, specifically, the weight of a tire body cord fabric is reduced by 0.5kg, the rubber coating amount of a belt ply is reduced by 0.5kg, the rubber amount of a tread is reduced by 2kg, the tire is lightest, the weight of the tire is effectively reduced, the weight of the aircraft tire with the specification is controlled within 78kg, and the severe weight requirement of an aircraft on the tire is met.

Claims (4)

1. The utility model provides a radial aircraft tire, includes matrix, tire bead, its characterized in that: the tire is characterized by further comprising a steel wire ring (1) arranged in the tire bead, a tire body cord (2) wrapping the steel wire ring (1), a filling rubber sheet (3) arranged on the outer side of the tire body cord (2) and below the tire bead, a tire side rubber sheet (4) arranged on the outer side of the tire body cord (2), and a wear-resistant rubber sheet (5) arranged at the bottom of the tire bead; and

set up in the matrix cord (2) outside just shoulder pad film (6) at matrix top, set up in layer (7) are restrainted in the winding of shoulder pad film (6) top, set up in layer (7) are restrainted in the winding ripple protective layer (8) of top, and set up in tread rubber layer (9) of ripple protective layer (8) top.

2. A radial aircraft tire according to claim 1, wherein: the number of layers of the winding belt layer (7) is 6-8, an angle of 10-20 degrees is formed between the winding belt layer and the circumferential direction of the tire, and the winding belt layer (7) is wound to form an annular cylinder shape.

3. A radial aircraft tire according to claim 2, wherein: each layer of winding belt layer (7) is formed by winding a single belt strip with the length of 10mm formed by extruding and coating 7 cords with glue.

4. A radial aircraft tire according to claim 3, wherein: one winding period of the winding belted layer (7) comprises 2 layers, the winding belted layer (7) is converted into the winding period, the width is gradually reduced layer by layer, and the equal difference grade half-lap winding is carried out.

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