98results about "V-belts" patented technology

The invention discloses a flex-resistant rubber composition for a triangular belt compression layer and a preparation method thereof. The flex-resistant rubber composition is prepared from the following components in parts by weight: 70 to 80 parts of natural rubber, 20 to 25 parts of butadiene styrene rubber, 10 to 15 parts of liquid polyisoprene rubber, 20 to 25 parts of layered inorganic powder, 1 to 2 parts of maleic anhydride polybutadiene, 5 to 10 parts of blue cotton short fiber, 50 to 60 parts of carbon black, 5 to 10 parts of white carbon black, 3 to 5 parts of coupling agent, 2 to 4 parts of tackifier, 2 to 3 parts of plasticizer, 6 to 8 parts of activator, 1.5 to 2.0 parts of anti-aging agent, 0.5 to 1 part of zinc methacrylate, 1 to 2 parts of accelerant and 2.8 to 3.0 parts of sulfur. The liquid polyisoprene rubber is utilized to mechanically shear and modify the layered inorganic powder, and when the liquid polyisoprene rubber is used for the rubber composition, the layered slippage property is achieved, so that stress concentration is avoided. The blue cotton short fiber is cooperated to increase the strength, limit the movement of a rubber molecular chain, prevent crack propagation and improve the flex resistance.

To improve the wear resistance and productivity of power transmission belts. [Solution] A rubber composition containing an ethylene-long-chain α-olefin-non-conjugated polyene copolymer, in which the long-chain α-olefin units have 4 or more carbon atoms, in a proportion of 25% by mass or more in the rubber component is compounded with the fabric of the transmission belt. The rubber composition may further contain silica, hard carbon black, aliphatic oil, tackifier, etc. At least a portion of the belt surface may be covered with a composite of the crosslinked rubber composition and the fabric to produce the transmission belt. This transmission belt may be a wrapped V-belt.

The present invention relates to a belt mechanism provided in a bicycle continuously variable transmission including a drive pulley and a driven pulley each configured from a pair of sheaves that can be moved toward and away from one another in the direction of an axis of rotation, and a V-belt wound between the drive pulley and the driven pulley, wherein an LT coefficient of the V-belt with respect to the drive pulley lies in a range of 8 to 12 in a usage condition in which torque is maximized with the continuously variable transmission shifted to a lowest speed side, and the V-belt has a belt transverse stiffness in a range of 1500 to 2500 N / mm in a ride-out change measurement test.

The present invention provides a transmission belt with excellent adhesion (bonding strength) between the silicone rubber layer on the conveying surface and the ethylene α-olefin elastomer layer laminated on the inner circumferential surface of the silicone rubber layer. [Solution] A transmission belt 1 for transporting articles, comprising a core wire 3 extending along the circumferential direction of the belt and an outer peripheral rubber layer 2 formed on the outer peripheral side of the belt relative to the core wire 3, wherein the outer peripheral surface of the outer peripheral rubber layer 2 is used for transporting articles. The outer periphery rubber layer 2 has a laminated structure including a first rubber layer 2a that forms the transport surface which is the outer periphery, and a second rubber layer 2b laminated on the inner periphery of the first rubber layer 2a. The first rubber layer 2a is formed from a crosslinked product of a first rubber composition containing silicone rubber, The second rubber layer 2b is formed of a crosslinked product of the second rubber composition containing ethylene-α-olefin elastomer, and The first rubber composition and / or the second rubber composition are blended with an unsaturated carboxylic acid metal salt.

Disclosed is an invention pertaining to a Classical BX Section V-belt composed of an aramid reinforcement cord and an EPDM compound, allowing the belt to perform efficiently in conditions of high-temperatures ranging between 90°C and 120°C. The aramid reinforcement cord in the belt increases tensile strength and minimizes elongation, while the EPDM compound increases heat resistance and durability. The V-belt construction also incorporates an EPDM coated fabric with an 80:20 polyester-polyamide composition ratio, ensuring increased flexibility and reduced stiffness. Other embodiments describe a method of manufacturing this Classical BX Section V-belt and the incorporation of the V-belt into a power transmission system for efficient operation under high- temperature conditions.

To provide a high-performance transmission belt.SOLUTION: A transmission belt B has at least a portion 111 of a belt body 11 formed of a crosslinked rubber composition. The crosslinked rubber composition is composed of a crosslinked product of an uncrosslinked rubber composition containing a rubber component, nanofibers, carbon black, zinc dimethacrylate, and an amylphenol disulfide polymer. In the crosslinked rubber composition, the nanofibers are oriented in the belt width direction. In the uncrosslinked rubber composition, the content of the carbon black is between 25 parts by mass and 70 parts by mass, and the sum of the contents of the carbon black and the zinc dimethacrylate is between 35 parts by mass and 75 parts by mass, relative to 100 parts by mass of the rubber component.SELECTED DRAWING: Figure 1A

The application discloses a special sand-blasting triangular belt with wear-resistant top glue, which comprises a strong layer, a stretching layer, a compression layer, a cloth layer and wear-resistant top glue; the strong layer is polyester steel wire; the stretching layer and the compression layer are adhered to the upper and lower sides of the strong layer; the cloth layer is wrapped outside the strong layer, the stretching layer and the compression layer to form a basic triangular belt; and the basic triangular belt is provided with a layer of wear-resistant top glue on the top. The triangular belt is provided with a layer of wear-resistant top glue on the top, which improves the wear resistance of the top surface; the triangular belts are arranged side by side to form a sand-blasting production line conveying line, which can complete the conveying task, effectively avoid the accumulation of the sprayed material, improve the sand-blasting effect and reduce the energy consumption of the conveying line; and the wear-resistant top glue can withstand the impact of the sprayed material and is not easy to wear, so that the service life of the triangular belt in the sand-blasting production line is long.

The present invention provides a power transmission belt with excellent adhesion (bonding strength) between the silicone rubber layer on the conveying surface and the hydrogenated nitrile rubber layer laminated on the inner circumferential surface of the silicone rubber layer. [Solution] A transmission belt 1 for transporting articles, comprising a core wire 3 extending along the circumferential direction of the belt and an outer peripheral rubber layer 2 formed on the outer peripheral side of the belt relative to the core wire 3, wherein the outer peripheral surface of the outer peripheral rubber layer 2 is used for transporting articles. The outer periphery rubber layer 2 has a laminated structure including a first rubber layer 2a that forms the transport surface which is the outer periphery, and a second rubber layer 2b laminated on the inner periphery of the first rubber layer 2a. The first rubber layer 2a is formed from a crosslinked product of a first rubber composition containing silicone rubber, The second rubber layer 2b is formed of a crosslinked product of a second rubber composition containing hydrogenated nitrile rubber, and The first rubber composition and / or the second rubber composition are blended with an unsaturated carboxylic acid metal salt.

The present invention provides a transmission belt with excellent adhesion (bonding strength) between the silicone rubber layer on the conveying surface and the ethylene α-olefin elastomer layer laminated on the inner circumferential surface of the silicone rubber layer. [Solution] A transmission belt 1 for transporting articles, comprising a core wire 3 extending along the circumferential direction of the belt and an outer peripheral rubber layer 2 formed on the outer peripheral side of the belt relative to the core wire 3, wherein the outer peripheral surface of the outer peripheral rubber layer 2 is used for transporting articles. The outer periphery rubber layer 2 has a laminated structure including a first rubber layer 2a that forms the transport surface which is the outer periphery, an intermediate layer 2b laminated on the inner periphery of the first rubber layer 2a, and a second rubber layer 2c laminated on the inner periphery of the intermediate layer 2b. The first rubber layer 2a is formed from a crosslinked product of a first rubber composition containing silicone rubber, The intermediate layer 2b contains a crosslinked binder component containing an unsaturated carboxylic acid metal salt. The second rubber layer 2c is formed from a crosslinked product of a second rubber composition containing ethylene-α-olefin elastomer.

A rubber composition for a power-transmission belt includes: a polymer component including an ethylene-α-olefin elastomer; carbon black; and clay, in which the ethylene-α-olefin elastomer has a Mooney viscosity at 125° C. of 25 ML (1+4) 125° C. or less, the clay has a pH of 5.5 or higher, a total amount of the carbon black and the clay is 80 parts by mass to 180 parts by mass with respect to 100 parts by mass of the polymer component, and a mass ratio of the carbon black to the clay is clay / carbon black=0.2 / 1 to 1.2 / 1.

A transmission belt (100) for a roller conveyor having rollers, made of steel or plastic and having concave grooves, the belt comprising: - an elastomeric body (102) comprising a back portion (104) and a belly portion (106) formed by a single tooth, the outer surface of the elastomeric body having a convex shape configured to engage with the concave grooves of the rollers; - a set of tension cords (110) embedded in the body (102) between the back portion (104) and the belly portion (106) of the body; - a coating (112) disposed on the outer surface of the tooth, having the shape of the outer surface of the tooth and defining a coefficient of friction with the concave grooves of the rollers that is non-zero and less than or equal to 0.8.

The utility model discloses an anti-aging wrapping cloth V belt which comprises three groups of inner cores, a first wrapping cloth layer is wound among the three groups of inner cores, a first gum dipping line layer is spirally wound on the outer side of the first wrapping cloth layer, a heat insulation layer is wound on the outer side of the first gum dipping line layer, and a second gum dipping line layer is wound on the outer side of the heat insulation layer. And a second wrapping cloth layer is arranged on the outer side of the second impregnated wire layer. According to the wrapping cloth V belt with the anti-aging performance, the internal structure of the V belt is prevented from being damaged by heat as much as possible, so that the anti-aging performance is improved, and the service life is prolonged.

In some embodiments, this disclosure provides compositions comprising 5 phr–30 phr of a PEDM terpolymer having 1–10 wt% diene, 13–40 wt% ethylene, and 15–85 wt% propylene, based on the weight of the PEDM terpolymer. The compositions further comprise 70 phr–95 phr of a terpolymer having an ethylene content, C3–C4, and C4 content different from the first polymer. 12 Ethylene-based copolymers of α-olefins and, unnecessarily, one or more dienes.

The present invention relates to a transmission V-belt, which is a transmission V-belt comprising a cured form of a first rubber composition, wherein the first rubber composition comprises a polymer component (A) containing an ethylene-α-olefin elastomer, a crosslinking agent (B) containing a sulfur-based crosslinking agent, and short fibers (C), wherein the short fibers (C) are oriented along the belt width direction, the rubber hardness (JIS-A) of the cured form is 91 degrees or more, and the elongation at break of the cured form in the belt length direction is 100% or more.

The invention relates to a drive belt, in particular a V-belt or a multi-ribbed belt, with a base body made of a polymeric material with elastic properties, comprising a cover layer as the belt backing and a substructure with a power transmission zone, wherein the polymeric material with elastic properties is based on a cross-linked rubber compound, characterized in that the cross-linked rubber compound comprises up to 100 phr of a sustainable carbon-containing material (SCM) with a particle size of D97 < 15 µm as measured according to ISO 13320:2020. The drive belt according to the invention has improved sustainability, expressed by a reduced CO2 footprint, and at the same time a very good service life.

To provide a transmission V-belt that can suppress exothermic heat even when being used for a small-sized belt type stepless speed change device, and can suppress peeling of a core wire and generation of cracks in a compressed rubber layer.SOLUTION: A core wire of a transmission V-belt is formed by Lang' lay cords obtained by doubling and ply-twisting a plurality of aramid fiber-containing first twist yarns, and a total fineness of the core wire is adjusted to 1,000-3,500 dtex. Tensile strength per wire of the core wire may be 500-1,000 N. A pitch of the core wire may be larger by 0.05-0.25 mm than an average diameter of the core wire, and an average diameter of the core wire may be 0.4-1 mm. An elongation rigidity per mm pitch width of the belt may be 6,500-20,000 N, and a flexural rigidity per mm pitch width of the belt may be 40-260 N (mm)2. A thickness of the transmission V-belt may be 5-12 mm, and a pitch width may be 10-25 mm. The transmission V-belt may be a low edge V-belt having a cog at least on the inner peripheral surface side, and the transmission V-belt may be a gear change belt to be used for a small-sized belt type stepless speed change device.SELECTED DRAWING: None

This invention provides a wrapped V-belt that improves the adhesive strength between the wrapped V-belt section and the tie band, while also offering excellent resistance to lateral pressure. [Solution] The wrapped bonded V-belt includes a belt body comprising a plurality of wrapped V-belt sections covered with an outer covering, and tie bands connecting the plurality of wrapped V-belt sections on the outer circumferential surfaces of each wrapped V-belt section, wherein the belt body comprises a core layer including a core body, at least one stretchable rubber layer laminated on the outer circumferential side of the core layer, and a compression rubber layer laminated on the inner circumferential side of the core layer, wherein the outer circumferential surface of the wrapped V-belt section is not covered with the outer covering, and the stretchable rubber layer is exposed. The exposed stretchable rubber layer is formed from a crosslinked rubber composition containing rubber components and carbon black, and the proportion of carbon black is adjusted to 20 to 80 parts by mass per 100 parts by mass of the rubber components.

The present application relates to the technical field of transmission belt, in particular to a kind of ceramic glaze line rubber V belt and its preparation method.The present application is optimized by optimizing the material of skeleton wire, high-elasticity nylon material is used, the tensile modulus of V belt is reduced, so that the same group of belt is more easily tensioned to the same length level;At the same time, wear-resistant and high-temperature-resistant EPDM rubber plate is used on the top of V belt, to improve the wear resistance and service life of the top, thereby meeting the demand of ceramic glaze line rubber V belt.

The invention relates to a drive belt, in particular a V-belt or a multi-ribbed belt, with a base body made of a polymeric material with elastic properties, comprising a cover layer as the belt backing and a substructure with a power transmission zone, wherein the polymeric material with elastic properties is based on a cross-linked rubber compound, characterized in that the cross-linked rubber compound comprises up to 100 phr of a sustainable carbon-containing material (SCM) with a particle size of D97 < 15 µm as measured according to ISO 13320:2020. The drive belt according to the invention has improved sustainability, expressed by a reduced CO2 footprint, and at the same time a very good service life.

The present invention relates to a rubber composition which contains an elastomer component, a polyvinylpyrrolidone-based resin, and non-water-absorbing short fibers, and which contains substantially no water-absorbing fibers. The elastomer component may contain an ethylene-α-olefin elastomer. The polyvinylpyrrolidone-based resin may have a K value of 10-100.

A transmission system (1) for synchronizing the movement of an object mounted on at least two parallel slides, said system comprising: at least two parallel slides (2A, 2B), each equipped with a means (M) for actuating the slides by converting a rotational movement into a translational movement, a drive pulley (3) mounted on a drive shaft intended to be connected to a drive means (5) capable of imparting a rotational movement to the drive shaft, a first and a second driven pulley (20A, 20B), each of said driven pulleys being mounted on a driven shaft connected to said means for actuating the slides, a plurality of asynchronous belts (10, 10A, 10B) for transmitting a rotational movement between the drive pulley and the driven pulleys, the drive pulley, the driven pulleys and the asynchronous belts being arranged in a space between the two slides. Figure for the abbreviation: Figure 1

The application discloses a kind of for triangle band compression layer flexing-resistant rubber composition and preparation method thereof.The flexing-resistant rubber composition weight part composition includes: natural rubber 70~80 parts, styrene butadiene rubber 20~25 parts, liquid polyisoprene rubber 10~15 parts, layered inorganic powder 20~25 parts, maleic anhydride polybutadiene 1~2 parts, blue cotton short fiber 5~10 parts, carbon black 50~60 parts, white carbon black 5~10 parts, coupling agent 3~5 parts, tackifier 2~4 parts, plasticizer 2~3 parts, activator 6~8 parts, antioxidant 1.5~2.0 parts, zinc methacrylate 0.5~1 part, accelerator 1~2 parts, sulfur 2.8~3.0 parts.Liquid polyisoprene rubber is used to mechanically shear modification layered inorganic powder, and it has layered slip property when being used in rubber composition, which avoids stress concentration.Collaborate blue cotton short fiber to increase strength, limit rubber molecular chain movement, prevent crack propagation, and improve flexing resistance.

The utility model relates to transmission belt technical field discloses a kind of harvesting machine V belt structure of anti-skid, including cladding mechanism, the cladding mechanism includes cladding cloth, the inner bottom surface of the cladding cloth is fixedly connected with top glue, the upper surface of the top glue is fixedly connected with tensile layer, the upper surface of the tensile layer is fixedly connected with bottom glue, the outer wall of the cladding cloth is equipped with multiple air holes, the inner wall of the cladding cloth is fixedly connected with multiple rubber particles at intervals.In the utility model, through the multiple protruding rubber particles fixed in the inner wall of cladding cloth, the friction between the V-type belt and the transmission disc can be effectively improved, so that the slippage between the V-type belt and the transmission disc caused by the large load in a short time can be prevented, the air holes are set to increase the contact area between the V-type belt and the gas, so as to accelerate the heat dissipation efficiency of the V-type belt.

The present invention relates to a wrapped fabric jointed V-belt including a plurality of wrapped fabric V-belt portions whose belt body portions are covered with a cover fabric, and a connecting belt that links the plurality of wrapped fabric V-belt portions at outer peripheral surfaces thereof, the outer peripheral surfaces of the wrapped fabric V-belt portions having a covered area covered with the cover fabric and an uncovered non-covered area, the covered area being formed in at least one side portion of the outer peripheral surface, and the cover fabric covering the covered area also covering a side surface of the wrapped fabric V-belt portion.

The present utility model relates to an annular drive belt, comprising a belt back layer located at an outer periphery, a profile layer located at an inner periphery, and a cord layer located between the belt back layer and the profile layer, wherein the profile layer has one or more of a planar profile, a wedge-shaped profile in the length direction of the drive belt, and a tooth-shaped profile in the width direction of the drive belt, wherein the belt back layer has a gapless butt joint in the circumferential direction of the annular drive belt, a surface of the belt back layer forms a belt back face, and the joint is turned up from the belt back face. The technical problem solved by the present utility model is reduction of the noise produced by the belt back of the drive belt in the process of motive power transmission.