Pneumatic tyre

 

(57) Abstract:

Essence: on the border protector - breaker auxiliary layer of the breaker is made of two mating between the strips, the width of each of which is 0,20-0,30 width of the tire. The distance between their inner edges is 0,30-0,40 width of the tire. 1 Il.

The invention relates to the tire industry, in particular, to the design of the breaker truck radial tires.

Known truck radial tires with a maximum load of 1500 kg and a width of not more than 235 mm, containing layers of the carcass and breaker, side rings, tread, sidewall.

The disadvantage of these tyres is the increased separation of the edges of the breaker.

The prototype of the invention is truck radial tyre construction which includes a frame, side rings, tread, sidewall and Brecker, consisting of the main and auxiliary layers. Moreover, on the border of the frame is one extended auxiliary layer of the breaker, made of nylon cord, and the other auxiliary layer of the breaker is located on the border of the breaker-tread.

The disadvantage of the prototype is that under the Central part Patiala. In addition, the extra structural material of the breaker impairs heat dissipation and leads to overheating of the tyre during its operation and reduce its overall health.

The invention consists in that on the border protector-Brecker posted saragas between two sub-layers of the breaker, the width of which is 0,20-0,30 width of the tire, the distance between their inner edges is 0,30-0,40 width of the tire, and tensile strength and frequency of cords all auxiliary layers are the same.

Application of the proposed technical solution allows to reduce the consumption of tyres, improve heat dissipation in the tread area during operation and improve the overall health of the tire.

If the width of the auxiliary layers of the breaker, more 0,30 width of the tire, and the distance between their inner edges, a smaller width of 0.30 profile tires is a waste of material, increases thermogenesis and deteriorates the heat sink during operation of the tire.

If the width of the auxiliary layers of the breaker, the lesser of 0.20 width of the tire, and the distance between their inner edges, more 0,40 width of the tire, prohodna the border protector-breaker placed, not saragas between two sub-layers of the breaker with the preferred width and distance of the inner edge.

The invention is illustrated by the drawing, which shows a meridional section of the tire.

A pneumatic tire includes a tread 1, the lower auxiliary layer 2 of the breaker, two basic layer 3 of the breaker, two auxiliary layer 4 of the breaker, located on the border protector-breaker, a frame 5, a sidewall 6, side ring 7. The width of the two auxiliary layers 4 of the breaker, made of rubber coated fabric with a durable thread and frequency as the upper auxiliary layer is 0,20-0,30 width of the tire, the distance between their inner edges is 0,30-0,40 width of the tire section.

According to the invention in Barnaul tyre plant was made an experimental batch of tyres 8,R. Tests of an experimental batch of tyres showed that by reducing the material intensity of the breaker improves heat in the tire during operation, increases the overall efficiency of the tire and manufacturability of the breaker.

PNEUMATIC TYRE with a width not more than 235 mm and the maximum allowable load 1610 kgs, including the tread, sidewall, side rings, the socio - main, located between the auxiliary, characterized in that on the border protector - breaker auxiliary layer of the breaker is made of two mating between the strips, the width of each of which is 0.20 - 0.40mm width of the tire, the distance between their inner edges is 0,30 - 0,40 width of the tire, and tensile strength and frequency of threads all auxiliary layers are the same.

 

Same patents:

Pneumatic tyre // 2021906
The invention relates to the tire industry, in particular, to the design of the breaker truck radial tires

The invention relates to pneumatic tires, in particular for the construction of the breaker tires of radial construction

FIELD: automatic industry; tyre industry.

SUBSTANCE: invention relates to design of radial-ply tyres for trucks. Proposed tyre casing contains tread, breaker, carcass, side strips and bead rings. Diameter of metal cord is from 1.14 to 1.26 mm. Metal cord proper is made of equal-diameter metal threads, ratio of metal thread diameter to diameter of metal cord being from 0.253 to 0.298. Ratio of breaker metal cord pitch to diameter of metal cord is from 1.9 to 2.25, and linear density of metal cord lies within 5.0 and 5.5 g/m. Ratio of thickness of each rubber-lined layer of metal cord in breaker to diameter of metal cord is from 0.35 to 1.49, breaking strength of metal cord being not lower than 1715±5N.

EFFECT: reduced materials usage, labour input and energy consumption at production of tyres.

2 dwg

FIELD: automotive industry; tyre industry.

SUBSTANCE: invention relates to design of radial-ply tyres for trucks. Proposed tyre casing contains tread, breaker, carcass, side strips and bead rings. Diameter of metal cord is from 0.87 to 0.97mm. Metal cord proper is made of metal threads of equal diameter, ratio of diameter of metal thread to diameter of metal cord being from 0.242 to 0.293. Ratio of pitch of metal cord in breaker to diameter of metal cord is from 1.85 to 2.076, and linear density of metal cord lies within 2.84 and 3.16 g/m. Ratio of thickness of each rubber-lined layer of metal cord in breaker to diameter of metal cord is from 1.62 to 1.85, and breaking strength of metal cord is not lower than 955±5N.

EFFECT: reduced materials usage, labour input and power consumption at production of tyres.

2 dwg

FIELD: automotive industry; tyre industry.

SUBSTANCE: invention relates to design of radial-ply tyres for trucks. Proposed tyre casing contains tread, breaker consisting of metal cord and textile layers, carcass, side strips and bead rings. Diameter of metal cord is from 0.83 to 0.91 mm. Metal cord proper is made of metal threads of equal diameter, ratio of diameter of metal thread to diameter of metal cord being from 0.280 to 0.331. ratio of pitch of metal cord in breaker to diameter of metal cord is from 1.978 to 2.168, and linear density of metal cord lies within 2.64 and 2/96 g/m. Ratio of thickness of each rubber-lined layer of metal cord in breaker to diameter of metal cord is from 1.538 to 1.839, and breaking strength of metal cord is not lower than 855±5N.

EFFECT: reduced materials usage, labour input and power consumption at production of tyre.

2 dwg

FIELD: automotive industry.

SUBSTANCE: proposed pneumatic tire has crown, two side strips and two beads as well as carcass reinforcement secured in each bead and crown reinforcement provided with working unit and protective unit form inside to outside in radial direction. Protective unit contains at least one layer of parallel reinforcement circumferentially orientated elements. Layer of protective unit is formed by reinforcement elements made of aromatic polyamide with initial modulus of elasticity not less than 1000 cN/tex and breaking strength exceeding 65 cN/tex.

EFFECT: increased strength of pneumatic tire crown.

20 cl, 5 dwg

FIELD: automotive industry; tire industry.

SUBSTANCE: invention relates to tires for machines used in civil engineering. Proposed tire has radial carcass reinforcement 1 second in each bead by means of ring reinforcement member of bead and radially upper crown reinforcement containing at least two working layers of non-stretchable metal cord with intersecting threads of layers, width of said layers is at least 50% of tread width L, and radially upper two protective layers along crown made of so-called elastic metal cord with intersecting threads of layers. Tread includes, in its grooveless part of thickness D, at least one reinforcement made of strengthening members. Said reinforcement consists of at least two layers of textile monofiber whose threads are parallel in each layer. Axial width of said layers is at least equal to width of most narrow working layer.

EFFECT: increased strength of crow of pneumatic tire.

4 cl, 1 dwg

FIELD: tire industry.

SUBSTANCE: invention relates to design of automobile tires, particularly to those used in construction vehicles. proposed reinforcement pack N of pneumatic tire contains reinforcement member embedded in converting materials and it includes first layer C1 and second layer C2 of metal elements E1, E2 parallel to each other and embedded into covering materials M1, M2 and third layer C3 of elements E3 made of textile material is placed between two layers C1 and C2, third layer being embedded into covering material M3. Textile elements E3 are orientated relative to elements E1 and E2 at angle within 70° and 110°.

EFFECT: increased strength of tires.

7 cl, 4 dwg

FIELD: tire industry.

SUBSTANCE: invention relates to tire with radial reinforcement of carcass for use on heavy vehicles, such as transport or construction and road-building machines. It relates to tire with axial width exceeding 37 inches. According to invention, tire has working reinforcement crown consisting of at least two uninterrupted working layers and terminating from each side of circumferential (equatorial) middle plane in at least two half-layers whose metal reinforcement members form angles exceeding minimum angle which is formed by reinforcement members of uninterrupted layers relative to circumferential direction. Half-layer passing in axial direction outwards further than other half-layers is in contact with widest in axial direction uninterrupted layer in crown, and two half-layers cover in radial direction axially outer end of said working layer widest in axial direction.

EFFECT: increased service life of tire.

8 cl, 4 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Air tire has breaker structure that comprises first breaker layer (51), second breaker layer (52) arranged in radial-inner position relative to first breaker layer (51), third breaker layer (53) arranged in radial inner position relative to first (51) and second (52) breaker layers. Every breaker layer (51, 52, 53) comprises multiple elongated reinforcing elements arranged above 1st, 2nd and 3rd breaker angles. Note here that 1st and 2nd angles vary from 15 to 40 degrees. Second angle has opposite sign relative to 1st breaker angle. Third breaker angle features magnitude varying from 40 to 90 degrees and opposite sign with respect to second angle. Breaker structure comprises also breaker layer (54) arranged at zero degree angle relative to 1st breaker layer (51) comprising elongated reinforcing elements arranged to make, in fact, zero breaker angle,.

EFFECT: perfected performances.

21 cl, 11 dwg

Tire case // 2422291

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, to design of truck radial tires. A case contains tread, breaker consisting of metal-cord and textile layers, casing, sidewalls and bead rings. Metal cord diameter is 0.77-0.85 mm. The metal cord itself is made of metal fibers with equal diameter, and the ratio of metal fiber to metal cord diameter is 0.330-0.410. The ratio of metal cord in rubber-covered breaker layer to metal cord is 2.057-2.743, and linear density of metal cord lays within the range of 2.12-2.34 g/m. Herewith, the thickness of each rubber-covered metal cord layer in breaker is 1.25-1.45 mm, and tensile strength of metal cord is not lower than 875±5 N.

EFFECT: material, labor and energy consumption of tire manufacturing is lowered.

2 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Proposed tire features ellipticity factor equal to or under 50%. Breaker layers 9, apart from outer breaker layer 10, are arranged so that breaker layer cords are arranged at θ 10-70° relative to tire lengthwise direction. Said outer breaker layer 10 is made of coiled layer 12 of coiled tape provided with steel cords in tire lengthwise direction. Said breaker layer 10 comprises section 10A located between fold position Po on opposite sides from tire equator and fold position 10B bent in U-like manner from position Po toward tire equator. Section 10A features width varying from 70% to 80% of width of contact between tread and ground while fold section 10 B has width varying from 5.0 mm to 0.5 of width.

EFFECT: longer life.

9 cl, 8 dwg

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