CN101856956A

CN101856956A - Aircraft tire bead structure

Info

Publication number: CN101856956A
Application number: CN 201010212132
Authority: CN
Inventors: 盛保信
Original assignee: SENTAIDA GROUP CO Ltd
Current assignee: Qingdao Sentury Tire Co Ltd
Priority date: 2010-06-22
Filing date: 2010-06-22
Publication date: 2010-10-13
Anticipated expiration: 2030-06-22
Also published as: CN101856956B

Abstract

The invention discloses an aircraft tire bead structure, which comprises a bead toe, a bead heel and a chafer and is characterized in that the chafer consists of a nylon monofilament mesh fabric and glue stock with high permeability resistance. In the disclosed tire bead structure, the cutting angle of the chafer is 43 to 46 degrees, the turn-down height of the chafer on the bead toe exceeds the bead toe by at least 30mm, the turn-up height of the chafer on the bead heel exceeds an aircraft rim by at least 10mm, and the calendering thickness of the coated chafer is 1.3mm to 1.7mm. The disclosed aircraft tire bead structure can ensure that the bead can be more tightly fit on the rim, consequently, the tire can achieve good air tightness, the leakage of the air pressure of the tire can be prevented to the max, and safety problems can be prevented when the aircraft tire is used.

Description

A kind of aircraft tire bead structure

Technical field

The present invention relates to aircraft tyre manufacturing technology field, relate to a kind of good bubble-tight aircraft tire bead structure that has in particular.

Background technology

Aircraft tyre be take off with landing mission in unique parts that contact with ground, be one of vital safety component in the aircraft.In the process of taking off and landing of aircraft, good air pressure can make aircraft tyre keep good running condition, guarantee that aircraft tyre bears top load, anticyclonic pressure, the high-speed and high-frequency distortion in the use, so, the air pressure that guarantees aircraft tyre is in the reasonable range, is the pacing factor that guarantees that aircraft safety takes off and lands.

For the air pressure that guarantees aircraft tyre is in the reasonable range, will guarantee that aircraft tyre has good air-tightness, and in aircraft tyre, tyre bead is the installing component of aircraft tyre when being installed on the aircraft wheel rim, form by bead coil, casingply and chafer, and play tire is fixed on effect on the aircraft wheel rim, therefore, the air-tightness of aircraft tire bead structure quality can directly influence the air-tightness quality of aircraft tyre.

The chafer of tire, wraps in parts such as bead coil, casingply, film together by extend to tire heel position at the bottom of the tyre bead always from the tire toe position of tire, makes whole tyre bead become as a whole.When mounting of tyre was to wheel rim, chafer directly contacted with wheel rim, and closely cooperated to keep the air pressure in the tire with wheel rim.

In the prior art, form by rubberized cord or pure film with the chafer of wheel rim close proximity.The cord of rubberized cord is owing to formed by hundreds if not thousands of one thread retwists, there are numerous very small capillary tubs in the cord, during tire uses, under the high pressure effect of in inflation, pressing, gas in the part tire chamber can pass through these capillary tub seepages, thereby causes the decline of tire internal gas pressure.Pure film is because its intensity is low, rigidity is little, and easily and the transposition metaboly takes place between the wheel rim, the air pressure that also influences in the tire kept when tire used.

Summary of the invention

In view of this, the invention provides a kind of tire bead, solved air pressure leakage problems of the prior art.

For achieving the above object, the invention provides following technical scheme:

A kind of aircraft tire bead structure comprises: tire toe, tire heel and chafer, described chafer is made up of nylon monofilament screen cloth and sizing material.

Preferably, described nylon monofilament screen cloth is formed by the nylon monofilament braiding, and described nylon monofilament diameter is 0.3mm～0.8mm.

Preferably, the calendering thickness behind the described chafer kiss-coating is 1.3mm～1.7mm.

Preferably, the severing angle of described chafer is 43 °～46 °.

Preferably, the just bag of described chafer in described tire toe position is higher than described tire toe 30mm highly at least.

Preferably, the turn up height of described chafer in described tire heel position exceeds the wheel rim 10mm of described aviation wheel rim at least.

Via above-mentioned technical scheme as can be known, compared with prior art, the present invention openly provides a kind of tire bead, by selecting the chafer of special construction for use, and, tire bead and wheel rim are closely cooperated by the structure setting at the bottom of the tire toe, tyre bead, between tire heel and the chafer, guarantee that tire reaches good air tightness, the tire pressure that prevents of limit is revealed greatly, thereby improves tire safety in use.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.

Fig. 1 is a tire bead structure scheme drawing disclosed by the invention;

Fig. 2 is nylon monofilament screen cloth 106 severing scheme drawings disclosed by the invention;

Fig. 3 is the structural representation of nylon monofilament screen cloth 106 disclosed by the invention;

Fig. 4 is the structural representation of the chafer 105 behind the kiss-coating disclosed by the invention.

The specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.

Tire closely cooperates by tyre bead and wheel rim, makes tire reach good air tightness, and the tire pressure that prevents of limit is revealed greatly, prevents that safety problem from use appearring in tire.See also accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, the embodiment of the invention discloses a kind of tire bead, mainly comprise: casingply 101, tire toe 102, at the bottom of the tyre bead 103, tire heel 104, chafer 105, bead coil 109.

At tyre bead portion, the casingply 101 of tire is walked around bead coil 109 and is fixed, and tire toe 102 is by 103 being connected with tire heel 104 at the bottom of the tyre bead, and is formed with the plane of certain angle, outsidely wrap with chafer 105, makes integral body of tyre bead formation.

Chafer 105 is made up of the nylon monofilament screen cloth 106 and the sizing material (indicating among the figure) of anti-good air permeability, and chafer 105 is arranged at the bottom of tire toe 102, the tyre bead 103 and call in person 104 the outside of tire.At tire toe 102, chafer 105 was just wrapping tire toe 102 from the inboard of tire toe 102; At tire heel 104, chafer 105 is crossed tire heel 104 from the outside anti-package of tire heel 104, chafer 105 and tire toe 102 and tire 104 close adhesion of calling in person.

In addition, chafer 105 is at the just bag aspect ratio tire toe 102 high at least 30mm at tire toe 102 positions.So the height that chafer 105 is just wrapping tire toe 102 can be 32mm, also can be 35mm.As shown in fig. 1, d is the just bag height of chafer 105.

In addition, chafer 105 exceeds 10mm at least at the call in person turn up height at 104 positions of tire than the wheel rim 110 of wheel rim 108.So the wheel rim 110 that the height of chafer 105 anti-package tires heel 104 also can be higher than wheel rim 108 is 12mm, e is the height that the turn up height of chafer 105 exceeds than wheel rim 110.

Need to prove that chafer 105 needs to control the angle [alpha] of severing, it is smooth, closely knit to help chafer 105 parcels, avoids chafer 105 to occur giving a discount, being out of shape in the process of parcel, thereby influences the air-tightness of tire.As shown in Figure 2, a is a weft direction among the figure, and b is a warp direction, and c is the severing line, and α is the severing angle.The severing angle [alpha] of the chafer 105 of Cai Yonging is 43 °～46 ° in the present invention, and this scope is a more excellent scope provided by the invention, and still, the present invention is not limited to this, and the severing angle [alpha] of chafer 105 also can be 42 ° or 47 °.

(a is a weft direction among the figure as shown in Figure 3, b is a warp direction), be used to form one of the material nylon monofilament screen cloth 106 of chafer 105, form by nylon monofilament 107 braidings, (f is the diameter of nylon monofilament 107 among the figure) as shown in Figure 4, the diameter of this nylon monofilament 107 is 0.3mm～0.6mm in preferred embodiment provided by the invention.This scope is the preferable scopes of nylon monofilament 107 diameters, and still, invention is not limited in this, and the diameter of this nylon monofilament 107 also can be 0.7mm.In preferable scope provided by the invention, there is not little pore (not indicating among the figure) in nylon monofilament 107, can avoid the slow leakage of tire pressure, the tire pressure that guarantees of big limit is within the preferable scope, improves tire safety in use.

Need to prove, as shown in Figure 1, tire bead contacts with wheel rim 108, and tire toe 102 to the part between the wheel rim 110 of wheel rim 108 of promptly forming tyre bead contacts by chafer 105, and the calendering thickness behind these chafer 105 kiss-coatings is 1.3mm～1.7mm.The preferred range that this scope provides for the embodiment of the invention, the chafer 105 in this scope can make the air-tightness between tyre bead and the wheel rim 108 better, and prevent the leakage of tire pressure, improve tire safety in use.But the thickness of relevant chafer 105 is not limited in this among the present invention, also can be 1.2mm, also can be 1.8mm.The structure of the chafer after the kiss-coating as shown in Figure 4, g is the calendering thickness of chafer 105 kiss-coatings among the figure.

In sum:

By chafer 105 of the present invention, and tire toe 102 and tire heel 104 is fixed in tyre bead on the wheel rim 108 together, make to have in the tire than the better air-tightness of prior art, the tire pressure that prevents of limit is revealed greatly, improves the process safe that tire is using.

Each embodiment adopts the mode of going forward one by one to describe in this specification sheets, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims

1. aircraft tire bead structure comprises: tire toe, tire heel and chafer is characterized in that described chafer is made up of nylon monofilament screen cloth and sizing material.

2. bead structure according to claim 1 is characterized in that, described nylon monofilament screen cloth is formed by the nylon monofilament braiding, and described nylon monofilament diameter is 0.3mm～0.8mm.

3. bead structure according to claim 1 is characterized in that, the calendering thickness behind the described chafer kiss-coating is 1.3mm～1.7mm.

4. bead structure according to claim 1 is characterized in that, the severing angle of described chafer is 43 °～46 °.

5. bead structure according to claim 1 is characterized in that, the just bag of described chafer in described tire toe position is higher than described tire toe 30mm highly at least.

6. bead structure according to claim 1 is characterized in that, the turn up height of described chafer in described tire heel position exceeds the wheel rim 10mm of described aviation wheel rim at least.