Abstract:
The invention relates to a belt (1) for drive technology, consisting at least of: a belt body made from two polymer materials A and B with elastic properties, comprising a top layer (2) as the belt back and a substructure (4) with a force transfer zone (7) and a tension member (3) embedded in the belt body. The belt (1) according to the invention is characterized in that the first material A contains 15 to 50 % w/w of at least one fire-resistant additive and is used everywhere in the belt body where high mechanical properties are not required and the second material B contains 5 to 35 % w/w of at least one fire-resistant additive and is used in the area of the belt body that is subjected to the highest mechanical stresses. The belt (1) is particularly used as a tractive element for hoisting technology.
Abstract:
A notched transmission belt B is provided with a plurality of notches 20 whose bottom in a cross-section taken along a plane orthogonal to the width direction of the belt includes a linear portion 20a at a center, and recessed curved portions 20b continuously formed at both sides of the linear portion 20a.
Abstract:
The present invention relates to a transmission belt containing a core wire extending in a lengthwise direction of the belt, an adhesive rubber layer in contact with at least a part of the core wire, a back surface rubber layer formed on one surface of the adhesive rubber layer, and an inner surface rubber layer formed on the other surface of the adhesive rubber layer and engaging or in contact with a pulley, in which the adhesive rubber layer is formed by a vulcanized rubber composition containing a rubber component, a fatty acid amide and a silica.
Abstract:
The present invention relates to a V-ribbed belt to be wound around plural pulleys and used, including an extension layer that forms a back surface of the V-ribbed belt, a compression layer provided on one surface of the extension layer and having plural ribs extending parallel to each other along a longitudinal direction of the V-ribbed belt, and a load carrying cord embedded between the extension layer and the compression layer along the longitudinal direction of the V-ribbed belt, in which a distance from an outer peripheral portion of the load carrying cord on the rib side to a tip portion of the rib is from 2.0 to 2.6 mm, and a distance from the outer peripheral portion of the load carrying cord on the rib side to a bottom portion of the rib is from 0.3 to 1.2 mm.
Abstract:
The invention relates to a belt (1) for driving systems, comprising at least: a belt body made of a polymeric material having elastic properties, comprising a cover layer (2) as a back of the belt and a foundation (4) having a force-transmission zone (7); and a tensile reinforcement (3) embedded in the belt body. The belt (1) according to the invention is characterized in that the belt body is made of at least two different materials A and B, namely: a first material A, which is provided with a fire-inhibiting additive and is used in the belt body everywhere the high mechanical properties are not required; and a second material B, which contains little or none of a fire-inhibiting additive and is used in the area of the belt body that is mechanically loaded the greatest. The belt (1) is used in particular as a tensile element for elevator systems.
Abstract:
A fiber reinforced composite belt in which a stainless steel fiber aggregate having a diameter of from 5 to 50 µm and impregnated with 1 to 10% by weight of a thermosetting resin such as an epoxy resin is buried as a reinforcing material (1) in a base material for belt, and a process for preparing the above-mentioned fiber reinforced composite belt are provided. This fiber reinforced composite belt is much more excellent in flex resistance, durability, water resistance and coefficient of linear expansion, as compared with not only a rubber belt and a synthetic resin elastomer belt but also belts reinforced by directly burying a stainless steel fiber and a steel fiber in the rubber.
Abstract:
A V-ribbed belt (1), which comprises an extension layer (3) that constitutes a belt back surface, a compression layer (4) that is formed on one surface of the extension layer (3), and core wires (5) that are embedded between the extension layer (3) and the compression layer (4) and extend along the circumferential length direction of the belt, and in which multiple V-shaped rib parts (2) that extend along the circumferential length direction of the belt and serve as a friction conveying surface with a pulley are formed in the compression layer (4) and the friction conveying surface is covered with a knitted fabric (6), wherein: the knitted fabric (6) is knitted of a polyester-based composite yarn and a cellulose-based natural spun yarn; the polyester-based composite yarn is a bulk textured yarn; and the knitting ratio of the cellulose-based natural spun yarn is not less than the knitting ratio of the polyester-based composite yarn.