516results about "Driving belts" patented technology

A toothed power transmission belt with a smooth back side surface has a back jacket on the back side surface; wherein the back jacket comprises a closed-mesh, knit fabric tube. The fabric tube may be knitted on a circular weft knitting machine and may be heat set after knitting. The fabric tube may be treated with an epoxy, RFL or other treatment to provide for oil resistance, adhesion, frictional properties, etc.

The present invention pertains to a toothed belt provided with a back section in which a core wire extending in the circumferential direction of the belt is embedded, and two or more tooth sections formed on the inner circumferential surface of the back section at intervals in the circumferential direction of the belt, the toothed belt includes a back rubber layer formed on the outer circumferential side of the belt with respect to the core wire, and a first rubber layer and a second rubber layer formed on the inner circumferential side of the belt with respect to the core wire, the back portion includes the back rubber layer, the elastic modulus of the first rubber layer is greater than the elastic modulus of the second rubber layer, and the elastic modulus of the second rubber layer is greater than the elastic modulus of the first rubber layer. The first rubber layer is formed from a first cross-linked rubber composition containing a first rubber component and first short fibers, the ratio of the first short fibers being 5-60 parts by mass per 100 parts by mass of the first rubber component, and the first short fibers being oriented in the longitudinal direction of the belt along the outlines of the teeth. The core wire includes a high elastic modulus fiber, and the tooth portion includes the first rubber layer and the second rubber layer interposed between the first rubber layer and the core wire.

A power transmission belt having a conductive rubber mixture, which has a resistivity of less than 6.0 MΩ, wherein the conductive composition includes a base rubber, 25 to 250 phr of non-conductive carbon black as a filler and up to 5 phr of graphene as a conductive filler. The incorporation of a combination of a non-conductive carbon black filler and graphene into the rubber mixture allows for the replacement of conductive carbon black, which is conventionally used to procure conductive properties to rubber, but which has the disadvantage that it is comparatively expensive, especially in the quantities needed to confer conductive properties to the rubber mixture.

A shade structure is provided that includes a frame assembly, a retractable shade assembly, and a drive system. The frame assembly includes a plurality of upright poles and a plurality of beams coupled therewith. The retractable shade assembly is coupled with the plurality of beams. The retractable shade assembly includes a shade section assembly that has a plurality of elongate bars and a shade section extending therebetween. The elongate bars are spread apart from each other to spread the shade section in an extended shade configuration. The elongate bars are moved toward each other in a retracted configuration wherein the shade section looped vertically between adjacent elongate bars.54334023

The present invention relates to a method of producing a cord for a power transmission belt, the method including: a first treatment step of treating an untreated yarn of a cord for a power transmission belt with a first treatment agent including a resin component (A) to obtain a first treated yarn; and a second treatment step of treating the first treated yarn with a second treatment agent including a condensate (B1) of resorcin and formaldehyde, an unmodified latex (B2), and an acid-modified diene-based polymer (B3) to obtain a second treated yarn.

The invention relates to a transmission belt (10) comprising a body provided with at least one elastomer-based tooth (B), said at least one tooth comprising: - an ethylene-propylene-diene monomer in a proportion of between 85 and 100 parts, per 100 parts of elastomer; - natural rubber in a proportion at most equal to 15 parts; - and regenerated carbon black in a proportion of between 20 and 70 parts.

The invention discloses a high-torque high-flexibility transmission belt which is composed of an outer rubber layer, a middle reinforcing layer and an inner rubber layer, the outer rubber layer comprises, by weight, 60-80 parts of nitrile rubber, 20-40 parts of polyurethane, 1-2 parts of an antioxidant and 5-15 parts of a reinforcing agent, and the reinforcing agent comprises sulfonated cellulose nanowhiskers, lignosulfonate and graphene oxide; the middle reinforcing layer comprises 50-80 parts of carbon fibers and 20-40 parts of aramid fibers; the inner rubber layer comprises 70-90 parts of natural rubber and 30-50 parts of butadiene rubber; the preparation method comprises the following steps: mixing components of the outer rubber layer to obtain outer rubber; mixing the components of the inner rubber layer to obtain inner rubber; the components of the middle reinforcing layer are woven into plain weave fabric; the plain weave fabric is pressed on the inner-layer rubber, the outer-layer rubber covers the plain weave fabric, a belt blank is obtained through hot pressing, the belt blank is cooled and shaped, and the transmission belt prepared from the components through the method has high torque and high flexibility.

A variety of transmission mechanisms are provided that include split pulleys nested within each other in order to reduce the size of the transmissions, to provide infinitely variable transmission ratios that include forward and reverse ratios, or to provide some other benefits. These transmissions include "W"-shaped belts, having both contact surfaces that are directed outward from the belt and inward, toward a center-line of the belt, to contact the pulleys with respective different inward- and outward-directed contact surfaces. Accordingly, the surfaces at which the belt contacts the different pulleys may be substantially the same with respect to a hinge or other structure of the belt. This improvement may permit higher levels of power transmission, increased efficiency, and increased transmission lifetime. Additionally, variable-eccentricity variable transmissions are provided wherein the eccentricity of rotation of an inner, nested pulley varies with changes in the transmission ratio of the transmission.

The present invention relates to a toothed belt including: a back portion; a tension member embedded in the back portion in a belt longitudinal direction and including a twisted cord including a steel fiber; a plurality of belt teeth formed on an inner peripheral side of the back portion along the belt longitudinal direction; and a cover layer provided between the tension member and a belt tooth bottom formed between the belt teeth, in which the cover layer has a thickness in a range of 0.2 mm to 1.0 mm, and the back portion, the belt teeth, and the cover layer are integrally formed of a thermoplastic elastomer.

The invention relates to an endless belt (10) with at least two cover plates (11) made of thermoplastic elastomer and at least one fabric tensile carrier (12) arranged between the two cover plates (11), the fabric tensile carrier comprising one or more polyolefin yarns, wherein the endless belt (10) has at least two longitudinal ends (13) which are connected to each other at a connection point (14) by a permanent (non-removable) connection such as an overlap or hook connection (15) and / or by at least one mechanical (removable) connecting device (16) at the longitudinal ends (13) such as a hook or screw connection, wherein the connection point (14) comprises at least one hot melt adhesive material based on thermoplastic elastomer and / or one-component adhesive material based on polyurethane, which reinforces the non-removable connection (15) of the two longitudinal ends (13) and / or additionally bonds the mechanical connecting device (16) to the longitudinal ends (13) in a material-bonded manner.

The utility model belongs to the technical field of window cleaning machines, and particularly relates to a wheel skin and a window cleaning robot. Comprising an inner belt and an outer belt which is connected with the inner belt and arranged on the outer side of the inner belt in a surrounding mode, and the outer belt comprises at least two contact faces which are opposite to the inner belt and have different friction coefficients. According to the wheel skin and the window cleaning robot, two or more contact surfaces with different friction coefficients are integrated on the surface, making contact with the glass surface, of the outer wheel skin, the window cleaning robot can walk on the smooth glass surface more smoothly due to the small friction coefficient, and the good anti-skid effect is achieved due to the high friction coefficient; the window cleaning machine can keep good adhesive force and stability on the dry, wet or oil stain glass surface, so that slipping is effectively avoided, and it is ensured that the window cleaning machine can conduct cleaning operation smoothly.

To provide a power transmission mechanism and a power transmission system by a belt capable of flexibly coping with a change of a route for transmitting power, reducing a bending radius, and reducing a production cost.SOLUTION: The guide part 11 is slender, curved or bendable, and has a guide hole 11a continuously extending from one end to the other end. The moving part 12 has a slender and flexible belt 22 inserted into the guide hole 11a, and is arranged so as to be slidingly movable to the guide part 11 on the inside of the guide hole 11a in the extending direction of the guide part 11 even when the guide part 11 is curved or bent.SELECTED DRAWING: Figure 1

A conveyor, power transmission or machine belt (1) which is open ended and has two end edges (6, 7) and a longitudinal length L in a longitudinal direction, comprising: a) two parallel lateral edges (1a, 1b) each extending in the longitudinal direction and separated from each other by a transverse width (W); b) a first fabric layer (2); c) a first coating layer (3); and optionally d) one or more through holes (5) through the overall thickness (T) of the belt, each of the through holes (5) being formed by a hole edge (5a), characterized in that i) the first fabric layer (2) comprises fibers or filaments of a thermoplastic and / or the first coating layer (3) comprises a thermoplastic or a thermoplastic elastomer; and ii) the lateral edges (1a, 1b) are ultrasonic or laser cuts and / or the optional hole edges (5a) are laser cuts. The belt or band has melt sealed edges, can be made into a loop by conventional end joining, and can be used in environments where lint is produced, such as a spool belt.

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.

A toothed belt in which the tensile modulus of the rubber composition constituting the belt teeth satisfies the following relationships (1) and (2). (1) Tensile modulus X in the belt width direction < tensile modulus Y in the belt length direction (2) Tensile modulus X in the belt width direction

The invention relates to a helically toothed drive belt comprising a base body of elastomeric material having teeth spaced apart in a tooth pitch, a plurality of tensile cords being arranged in the base body in a longitudinal direction and being enclosed by the elastomeric material of the base body. The tensile cords are made from a single twisted yarn of p-aramid. According to the invention, the outer diameter of the tensile cords is between 0.25 mm to 0.5 mm.

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 invention discloses a hybrid synchronous transmission device, which is characterized in that a synchronous wheel and a gearless wheel form a synchronous belt on the side of the synchronous wheel, and the length of the synchronous belt is greater than or equal to the sum of the length of the synchronous belt at the swing angle of the synchronous wheel and the length of the synchronous belt at the wrap angle of the synchronous wheel; the length of the toothless belt is larger than or equal to the sum of the length of the toothless belt at the gearless swing angle and the length of the toothless belt at the gearless wrap angle, the toothless belt wheel and the toothless belt are matched to rotate all the time in the whole transmission process, and when position deviation exists between the axes of the two transmission wheels, relative to the rigidity of the synchronous belt, the transmission speed is increased. The toothless part of the mixing belt can be a flexible belt, and the synchronous belt is only meshed with one synchronous wheel, so that abrasion caused by dislocation can be avoided.

A power transmission system comprising a transmission belt (10) comprising a body (13) comprising a first elastomeric material, a plurality of cords (14) and a plurality of V-shaped ribs (19) arranged side by side to one other and alternating with V-shaped grooves (20), and extending along the transversal axis A of the belt. The belt comprises a first toothing (26) and a second toothing (27) formed by a plurality of teeth (28, 29) and extending obliquely to the transversal axis A of the belt forming therewith respective helix (alpha, beta) angles different from 0°.

A belt includes: a belt main body; at least one energizing core cord containing a core wire having electrical conductivity; and at least one reinforcing core cord having an electrical resistance per unit length being greater than that of the energizing core cord, wherein the belt main body has at least one belt hole which penetrates the belt main body in a thickness direction, the energizing core cord and the reinforcing core cord are embedded in the belt main body along a length direction of the belt main body to be spaced apart in a width direction of the belt main body, and each distance between the energizing core cord and a periphery of the belt hole is no less than 0.5 mm.

In a toothed belt in which a core wire is embedded, a distance L from a tooth bottom line to a center line center varies along a belt length direction, and the absolute value X of the difference between a distance LA from the tooth bottom line to the center line center at a tooth bottom and a distance LB from the tooth bottom line to the center line center at a belt tooth is 0.35 mm or less.

A drive belt (10) comprising a body (12) made of an elastomeric matrix (12a) and extending along an extension direction (X), and a reinforcement (14) integral with the body (12) and extending across the width of the belt, the body (12) comprising a mechanical drive surface (15) comprising a plurality of teeth (16) extending transversely along a transverse direction (Y) perpendicular to the extension direction (X). The elastomeric matrix (12a) is made of a first material comprising a thermoplastic elastomer, said elastomeric matrix (12a) being overmolded onto the reinforcement (14). The reinforcement (14) is composed of at least one layer of at least one wound strip (14a). (See Figure 3 for abbreviations.)

A toothed belt has a back portion in which a core wire is embedded; and a belt tooth provided on the inner peripheral side of the back portion and meshing with a pulley groove of a toothed pulley, in which the tooth crest compression ratio Y (%) of the belt tooth calculated by formula (1) is-2 < = Y < = 10, and the void ratio X (%) of the belt tooth in the tooth width direction calculated by formula (2) is-30 < = X < = 0. Y (%) = ((belt tooth height Hb-pulley tooth groove bottom depth Hp) / belt tooth height Hb) * 100 (1) X (%) = ((pulley tooth width [gamma]-pulley tooth width [beta]) / pulley tooth width [gamma]) * 100 (2)

The utility model relates to the technical field of belts, and discloses a belt with a rapid hole position adjusting function, which comprises an outer cover, a transmission belt is arranged on the inner side of the outer cover, grooves are formed in the front side and the rear side of the top of the outer cover, moving blocks are fixedly connected to the front side and the rear side of the top end of the transmission belt, and pull ropes are fixedly connected to the inner sides of the moving blocks. Mounting blocks are fixedly connected to the left side and the right side of the exterior of the pull rope, clamping blocks are fixedly connected to the outer sides of the mounting blocks, clamping groove blocks are fixedly connected to the left side and the right side of the top of the outer cover, and the clamping groove blocks and the clamping blocks are clamped. During operation, the mounting plate is held to pull the pull rope and the movable block, so that the pull rope and the movable block slide along the groove in the top of the outer cover, the transmission belt is driven to move on the inner side of the outer cover, the transmission belt and the outer cover are adjusted to be intersected and staggered, the hole position can be adjusted, and then the mounting plate is clamped and fixed through the clamping block and the clamping groove block; hole adjustment can be completed on the premise that use of the belt is not affected.

A variety of transmission mechanisms are provided that include ‘radially inverted’ pulleys that are nested within each other or otherwise overlap in order to exert ‘inward’ forces onto a compressive belt that transmits power between the pulleys. By exerted forces ‘inward’ onto the belt, the belt can be subjected to net compression everywhere along its length. This allows the belt to be less complex and to have a lower cost than belts of transmissions that exert forces ‘outward’ from pulleys onto a belt, thus requiring expensive and technically challenging belt packs or other elements to sustain the longitudinal tensions experienced by such belts, even when such belts are operated as “push” belts. Transmissions that include such ‘radially inverted’ pulleys can exhibit reduced size and cost and increased power capacity compared to transmissions that employ ‘non-radially inverted’ pulleys.

A belt carcass (1) comprising one, two, or more than two impregnated layers (21, 22, 23, 24, 25); characterised in that i) each impregnated layer (21, 22, 23, 24, 25) comprises, or consists essentially of, a non-woven fabric (3, 301, 302, 303, 304, 305, 306, 307, 308) and an impregnation material (4, 401, 402, 403, 404, 405, 406, 407, 408) comprising, or consisting essentially of, a first thermoplastic, first thermoplastic elastomer, first elastomer or first thermoset and optional additives; whereby, if there are two or more such impregnated layers (21, 22, 23, 24, 25), they are adjacent to each other, ii) if the belt carcass (1) comprises one or more such impregnated layers (21, 22, 23, 24, 25), then reinforcing filaments extending at least in part in one given direction and being in the form of one filament layer (51) are embedded in the non-woven fabric (3) of exactly one of said impregnated layers (21); or if the belt carcass (1) comprises two or more such impregnated layers (21, 22, 23, 24, 25), then reinforcing filaments extending at least in part in one given direction and being in the form of one filament layer (52,53) are sandwiched between two adjacent such impregnated layers (21 / 22, 24 / 25), and iii) the belt carcass is devoid of woven fabrics. This belt carcass can be cut into longitudinal belts or into circular disks or corner belts.

A toothed belt having multiple belt teeth arranged at a constant pitch in the longitudinal direction of the belt, wherein the belt teeth mesh with pulley grooves provided at a constant pitch on the periphery of the toothed pulley, wherein the area Sb of the backlash of the belt teeth with respect to the pulley groove and the area Sp of one of the pulley grooves are 7.26 × 10 -2 ≥Sb / Sp ≥ 3.46 × 10 -2 ...(1) and the tooth height Hb of the belt teeth and the tooth groove bottom depth Hp of the pulley groove are 1.04 ≥ Hb / Hp ≥ 0.91 ...(2) A toothed belt.