Rope with internal lubricant depots, ropeway comprising the rope and method for producing the rope

Abstract

The invention relates to a rope (10, 10', 10", 10‴), in particular a wire rope, preferably a cable car traction wire rope and / or a cable car conveyor wire rope, with a rope core (20, 20', 20") and with a plurality of longitudinal elements (12, 14), in particular wires or wire strands, which are stranded around the rope core (20, 20', 20"). It is proposed that the rope (10, 10', 10", 10‴) comprises at least a first lubricant reservoir (16, 16a) which is directed onto a contact area (18) spirally around the rope core (20, 20', 20") between a first longitudinal element (12) of the longitudinal elements (12, 14) and the rope core (20, 20', 20") or between a core element (42), which is arranged between adjacent longitudinal elements (12, 14) and is bounded by the rope core (20, 20', 20").

Description

State of the art

[0001] The invention relates to a rope according to the preamble of claim 1, a cable car according to claim 13 and a method according to the preamble of claim 14.

[0002] Cableway traction wire ropes and cableway hoist wire ropes with a rope core and with a plurality of longitudinal elements stranded around the rope core have already been proposed.

[0003] The object of the invention is, in particular, to provide a generic device with advantageous usage properties. This object is achieved by the features of the independent patent claims, while advantageous embodiments and further developments of the invention can be found in the subclaims. Advantages of the invention

[0004] The invention is based on a rope, in particular a wire rope, preferably a cable car traction wire rope and / or a cable car hoist wire rope, with a rope core and with a plurality of longitudinal elements, in particular wires or wire strands, which are stranded around the rope core.

[0005] It is proposed that the rope have at least a first lubricant reservoir, which is limited to a (first) contact area spirally encircling the rope core between a first longitudinal element of the longitudinal elements and the rope core, or between an insert element arranged between adjacent longitudinal elements of an innermost rope layer of the rope and the rope core. This advantageously increases the service life, in particular by reducing internal wear. Furthermore, by locating the lubricant reservoir, in particular in an inner region of the rope, high friction on the outer surfaces of the rope can be achieved despite the use of lubricant, which is particularly essential for cable car ropes, which are often driven by friction pulleys or the like.Advantageously, the invention allows lubrication of the rope to be limited to the areas between the longitudinal elements and the rope core. Furthermore, the use of local and limited lubricant reservoirs can achieve high economic and / or ecological efficiency. Advantageously, the amount of lubricant used to achieve the desired effect can be kept particularly low, thereby advantageously minimizing resource consumption and resulting in a cost advantage. Advantageously, providing a lubricant reservoir between the insert element and the rope core can create a reserve lubricant reservoir or a lubricant reservoir whose lubricant is only used as the rope ages or reaches the longitudinal elements, in particular the wire strands.

[0006] Preferably, exactly six longitudinal elements, in particular wires or wire strands, are wound / stranded around the rope core. However, more or fewer than six longitudinal elements, for example, five, seven, or eight longitudinal elements, are also conceivable. The rope is designed in particular as a wire strand rope, e.g., as a 6x19 Seale wire strand rope, as a 6x25 Filler wire strand rope, as a 6x29 Filler wire strand rope, or as a 6x36 Warrington Seale wire strand rope. The rope is designed in particular as a wire rope, preferably a wire strand rope. The rope, in particular the wire strand rope, can be designed as a non-compacted rope or as a compacted rope. The compacted rope can have compacted strands, in particular strands with compacted wires. In this context, a "longitudinal element" is understood to mean, in particular, an elongated and / or thin and / or at least mechanically bendable and / or flexible body.Advantageously, the wire(s) of the longitudinal element have(s) an at least substantially constant, in particular circular or elliptical, cross-section along their / their longitudinal direction(s). Particularly advantageously, the wires are designed as round wires. However, it is also conceivable for the wire to be designed, at least in sections or entirely, as a flat wire, a square wire, a polygonal wire, and / or a profiled wire having another profile shape. Preferably, the wire and / or the longitudinal element have a particularly corrosion-resistant coating and / or sheath, such as a zinc coating and / or an aluminum-zinc coating and / or a plastic coating and / or a PET coating and / or a metal oxide coating and / or a ceramic coating or the like.

[0007] The rope is designed in particular as a single-layer rope. However, a design as a multi-layer rope is also conceivable. The rope can also have insert elements between the longitudinal elements or be designed without insert elements between the longitudinal elements. In particular, at least some of the longitudinal elements of the rope can be made of natural or synthetic fibers. Preferably, at least some of the longitudinal elements, preferably all of the longitudinal elements, are made of a metal, preferably steel. The steel of at least some of the longitudinal elements made of metal, preferably all of the longitudinal elements, can be a high-strength steel with a tensile strength of 1000 N / mm 2 and more. However, a design of some of the longitudinal elements made of metal, in particular all of the longitudinal elements, from non-high-strength steel with tensile strengths below 1000 N / mm 2 is also conceivable.The steel of at least some of the longitudinal elements formed from metal, preferably all of the longitudinal elements, can be stainless steel. Alternatively, it is also conceivable, for example, for the wire to be formed at least partially or entirely from a composite material and / or an inorganic non-metallic material and / or a ceramic material. In particular, the wire could also be formed as a composite wire, for example as a metal-organic composite wire and / or a metal-inorganic composite wire and / or a metal-polymer composite wire and / or a metal-metal composite wire or the like.

[0008] In particular, the longitudinal elements of a rope layer, preferably all longitudinal elements of the rope, are stranded with a lang lay, for example a right lay or a left lay. Alternatively, the longitudinal elements could also be stranded with a regular lay. In particular, the rope is designed as a cable car traction wire rope and / or cable car hoist wire rope for a passenger cable car, for example a mountain railway or a light rail system, and / or for a material cable car, in particular underground, e.g. in a mine, or above ground, e.g. in the mountains or in a city. For example, the rope could be designed as a cable car traction wire rope and / or cable car hoist wire rope for transporting persons in accordance with the standard DIN EN 12385-8:2003-03 and / or the standard ANSI B77.1-2022. Preferably, the cable car traction wire rope and / or cable car hoist wire rope is designed for an operating time of several thousand hours, e.g. more than 3000 hours, per year.The rope is, in particular, an endless rope, preferably a revolving haulage rope or a revolving traction rope of a cable car. In particular, the cable car traction wire rope and / or cable car haulage wire rope is moved during operation and deflected at at least one, preferably at least two points, e.g., by a deflection wheel / drive pulley of a cable car (end) station. Advantageously, the rope, in an assembled state, is wrapped around at least one drive element, in particular around the drive pulley, of a drive unit of a cable car. "Provided" is to be understood, in particular, as being specially designed and / or equipped. The fact that an object is intended for a specific function is to be understood, in particular, as meaning that the object fulfills and / or performs this specific function in at least one application and / or operating state.

[0009] The rope core is designed in particular as a plastic rope core. The rope core forms in particular a rope core. The rope core forms in particular a rope heart. The rope core forms in particular a rope insert. The rope core is arranged in particular in the center of the rope, preferably of a vertical rope cross-section. The longitudinal elements of a rope layer are preferably arranged on an imaginary circular line in the vertical cross-sectional view of the rope. The centers of the longitudinal elements of the rope are each arranged at the same distance from the center of the rope / rope core in the vertical cross-sectional view of the rope. The rope core can have a flat, in particular unmachined, cylindrical outer surface.However, it is also conceivable for the rope core to have at least one helical groove, preferably a plurality of helical grooves, preferably a number of helical grooves corresponding to the number of longitudinal elements of the rope, on an outer sheath surface. The grooves can have been introduced into the rope core prior to stranding, or alternatively, the rope core could also be designed as a solid polymer core that deforms when heated during stranding. In addition, the rope core could also be designed as a fiber core comprising a plurality of fibers, in particular PP fibers. The outer sheath surface of the rope core is, in particular, the surface of the rope core that delimits the rope core outwards in a radial direction of the rope that is perpendicular to the longitudinal direction of the rope (pointing towards the longitudinal elements).In particular, a longitudinal element stranded around the rope core is guided / wound in a helical / helical manner around the rope core. In particular, a lay length of the longitudinal elements is at least 4*d and preferably at least 6*d and / or at most 12*d and preferably at most 9*d. However, other lay lengths are also conceivable. Advantageously, the longitudinal elements are arranged around the core in such a way that they are contact-free and / or spaced apart from one another with respect to their longitudinal directions. Advantageously, the rope has a constant diameter. The diameter of the rope can be suitably selected for the specific application. In particular, the diameter is at least 10 mm and / or at most 100 mm. If the rope is a traction rope, for example, the diameter is in particular at least 10 mm and advantageously at least 20 mm and / or at most 80 mm and advantageously at most 70 mm.If the rope is a hoist rope, for example, the diameter is in particular at least 30 mm and advantageously at least 40 mm and / or at most 100 mm and advantageously at most 90 mm. However, rope diameters deviating from this are also conceivable. In addition, the rope preferably has a constant cross-section or at least a cross-section that occurs periodically along its longitudinal direction. The cross-section can be circular, in particular if the rope has suitable insert elements between longitudinal elements running along its surface, which advantageously fill spaces between the longitudinal elements. It is also conceivable for the cross-section to correspond to that of a conventional wire rope with strands arranged around a rope core.

[0010] Advantageously, the longitudinal elements each have an at least substantially constant cross-section. Preferably, the longitudinal elements are wire strands, which in turn can be constructed from a plurality of individual wires, which in particular can be at least substantially identical to one another. It is also conceivable for a longitudinal element, for example designed as a wire strand, to have different individual wires and / or other components such as inserts, fibers, sheathing elements, or the like. In particular, in the case that a longitudinal element is designed as a wire strand, the longitudinal element advantageously has a lay length that corresponds to at least five times and preferably at least seven times and / or at most 15 times and preferably at most eleven times the diameter of the longitudinal element. In principle, longitudinal elements of different lay can be used.In addition, the lay direction of the wire rope can be identical or opposite to the lay direction of the longitudinal elements or at least individual longitudinal elements. "At least substantially identical" objects are understood to mean, in particular, objects that are constructed in such a way that they can each fulfill a common function and, apart from manufacturing tolerances, preferably differ in their construction only by individual elements that are immaterial to the common function. Advantageously, these are objects that are identically designed, apart from manufacturing tolerances and / or within the scope of manufacturing technology possibilities. Identical objects are understood to mean, in particular, objects that are symmetrical to one another.The fact that an object has an "at least substantially constant cross-section" is to be understood in particular to mean that for any first cross-section of the object along at least one direction and any second cross-section of the object along the direction, a minimum surface area of ​​a differential area formed when the cross-sections are placed on top of one another is a maximum of 20%, advantageously a maximum of 10% and particularly advantageously a maximum of 5% of the surface area of ​​the larger of the two cross-sections.

[0011] In particular, the rope core has a larger maximum diameter than each of the longitudinal elements stranded with the rope core. This advantageously prevents mutual contact between the longitudinal elements. In particular, the maximum diameter of the rope core is at most 120%, preferably at most 100%, advantageously at most 66%, and preferably at most 35% larger than a maximum diameter of one of the longitudinal elements, in particular the longitudinal element with the largest diameter.For example, in a 6-strand rope, the maximum diameter of the rope core can be at most 35% larger than a maximum diameter of one of the longitudinal elements, in particular the longitudinal element of the longitudinal elements with the largest diameter, whereas in an 8-strand rope, the maximum diameter of the rope core can preferably be significantly larger than 35%, but at most 120% larger than the maximum diameter of one of the longitudinal elements, in particular the longitudinal element of the longitudinal elements with the largest diameter. In particular, the maximum diameter of the rope core is at least 10%, preferably at least 20%, advantageously at least 30%, and preferably at least 35% larger than a maximum diameter of one of the longitudinal elements, in particular the longitudinal element of the longitudinal elements with the largest diameter.In particular, the maximum diameter of the rope core is formed by the minimum possible diameter of an imaginary circular ring, which always contains the entire cross-section of the rope core when displaced along the longitudinal extent of the rope core over the entire longitudinal extent of the rope core.

[0012] In particular, the first lubricant depot, and preferably also each additional lubricant depot, is spatially limited locally to a rope region located entirely within the interior of the rope. In particular, the rope region to which the first lubricant depot, in particular one of the lubricant depots, is spatially limited, runs spirally or helically around the rope core. In particular, only a single longitudinal element of the longitudinal elements of the rope, preferably the first longitudinal element, is arranged partially within the first lubricant depot and / or adjacent to the first lubricant depot. In particular, a separate lubricant depot can be assigned to a plurality of longitudinal elements and / or a plurality of insert elements, preferably to each longitudinal element and / or each insert element. In particular, the respective lubricant depot extends along an entire length of the respective longitudinal element and / or the respective insert element.Alternatively, however, it is also conceivable for several separate lubricant depots to be arranged one behind the other along the entire length of a longitudinal element. In particular, a contact area between the first longitudinal element and the rope core is formed at least by the contacting surface sections of the rope core and the longitudinal element as well as all areas of the rope core and the longitudinal element lying between external contact points. In the case of a rope core with spiral-shaped circumferential grooves, the contact area can be formed by the recess of one of the grooves. In addition, areas inside the longitudinal element that are immediately adjacent to direct contact points can also be counted as part of the contact area. In particular, the contact area runs around the rope core with an identical lay direction and with an identical lay length as the associated longitudinal element.

[0013] It is further proposed that the rope have at least one second lubricant reservoir, which is in particular different from the first lubricant reservoir and is limited to a (second) contact area spirally encircling the rope core between a second longitudinal element of the longitudinal elements, which is in particular different from the first longitudinal element, and the rope core. This advantageously increases the service life of the rope. In particular, a number of lubricant reservoirs of the rope corresponds to a number of longitudinal elements of the rope, in particular to an innermost rope layer of the rope. In particular, each of the longitudinal elements of the rope is assigned its own lubricant reservoir.

[0014] Alternatively or additionally, it is proposed that the rope have at least one (further) second lubricant depot, which is in particular different from the first lubricant depot and is limited to a (third) contact area running spirally around the rope core between a second insert element, which is in particular different from the first insert element, and the rope core. This can advantageously increase the service life of the rope. In particular, a number of lubricant depots in the rope then corresponds to a number of insert elements or a sum of insert elements and longitudinal elements of the rope, in particular to an innermost rope layer of the rope. In particular, each of the insert elements of the rope is assigned its own lubricant depot. In particular, the lubricant depots are non-intersecting. In particular, the lubricant depots run uniformly around the rope core.

[0015] If the first lubricant depot(s) and the second lubricant depot(s), preferably all lubricant depots of the rope, are spatially separated from one another, high efficiency, in particular cost efficiency and / or resource utilization efficiency, can advantageously be achieved, and / or high operational reliability can be achieved, in particular by preventing lubricant from escaping to a surface of the rope. In particular, no or almost no exchange of lubricant takes place between adjacent lubricant depots, in particular any lubricant depots, and especially the first lubricant depot and the second lubricant depot. In a cross-sectional view of the rope, the lubricant depots are arranged around the rope core in mutually separate cross-sectional areas.

[0016] Furthermore, it is proposed that the rope have a number of lubricant reservoirs corresponding to a number of longitudinal elements of the innermost rope layer or a number of insert elements, or a sum of longitudinal elements of the innermost rope layer and insert elements of the rope, each of which is limited to contact areas between the respective longitudinal element and the rope core, preferably spatially separated from one another, encircling the rope core in a spiral. This can advantageously increase the service life of the rope. These effects can advantageously be achieved with high efficiency, in particular cost efficiency and / or resource utilization efficiency.

[0017] Additionally, it is proposed that the lubricant reservoir(s) of the rope used as a cableway traction wire rope and / or cableway hoist wire rope contain(s) a lubricant that deviates significantly from the specifications of Annex A "General Requirements for Lubricants" of the EN 12385-8:2002 (D) standard. In particular, by limiting the lubricant to the lubricant reservoirs located inside the rope, compliance with the standards of the entire rope can be advantageously achieved despite the use of non-standard lubricants. This advantageously makes it possible to obtain a standard-compliant cableway traction wire rope and / or cableway hoist wire rope that has a particularly long service life and runs smoothly. In particular, Annex A "General Requirements for Lubricants" of the EN 12385-8:2002 (D) standard includes at least the following requirements for the lubricant.In particular, the lubricant must have a coefficient of friction of more than 0.22 at 20°C, as determined according to DIN 21258:1986, according to Annex A "General Requirements for Lubricants" of the EN 12385-8:2002 (D) standard. In particular, the rope must not experience a volume change of more than 20% or a hardness reduction of more than 10° Shore A, as determined according to DIN 53521:1987-11, during a 14-day immersion test in a lubricant at a temperature above 20°C, in accordance with Annex A "General Requirements for Lubricants" of the EN 12385-8:2002 (D). In particular, the lubricant must have an adhesive strength and plasticity in accordance with point 4.2 of DIN 21258:1986, as defined in Annex A "General requirements for lubricants" of the standard EN 12385-8:2002 (D).In particular, according to Annex A "General requirements for lubricants" of standard EN 12385-8:2002 (D), the lubricant must have a water-soluble acid content that complies with section 4.4 of DIN 21258:1986. In particular, according to Annex A "General requirements for lubricants" of standard EN 12385-8:2002 (D), the lubricant must have a flash point above 55°C that complies with DIN EN ISO 2592:2018-01.

[0018] Furthermore, it is proposed that the lubricant reservoir(s) of the cable car traction wire rope and / or cable car hoist wire rope comprise(s) a lubricant having a coefficient of friction of less than 0.22, in particular less than 0.20, preferably less than 0.10, and preferably less than 0.05, as determined in particular according to the standard DIN 21258:2007-10. This advantageously allows good lubrication to be achieved, which in particular results in a significant increase in service life and increased smoothness of operation, preferably without impairing the traction capability of the rope.

[0019] If a lubricant contained in the lubricant reservoir(s) comprises an EP (Extreme Pressure) additive, particularly advantageous tribological properties can be achieved. For example, the EP additive can be a sulfur-crosslinked organic compound, a phosphorus-containing compound such as a dialkyl dithiophosphate and / or a dimercaptothiadiazole derivative, and / or a chloroparaffin. The lubricant itself can be formed, for example, by a (mineral oil) soap-based grease (e.g., based on paraffins, olefins, naphthenes, or aromatics) or by a synthetic-based grease. In particular, the lubricant could be a mineral oil-based aluminum complex soap-based grease with EP additives.

[0020] Furthermore, it is proposed that the rope core have at least one first groove running spirally around the rope core, within which the first lubricant reservoir is arranged. This advantageously makes it possible to achieve particularly reliable and / or durable localization of the lubricant reservoirs. Alternatively, however, ropes with lubricant reservoirs according to the invention are also conceivable, the rope cores of which are free of grooves, i.e., cylindrical, or designed as a fiber core. When designing the rope core with grooves, the number of grooves preferably corresponds to the number of lubricant reservoirs and / or the number of longitudinal elements of the rope. In particular, the first lubricant reservoir is arranged in a first groove, into which the first longitudinal element is inserted, while the second lubricant reservoir is arranged in a second groove, into which the second longitudinal element is inserted.However, it is also conceivable that only some of the grooves have lubricant deposits, for example every second groove seen in the circumferential direction.

[0021] If the first groove of the rope core spatially delimits the first lubricant depot at least in the circumferential direction of the rope core, a particularly high efficiency, in particular cost efficiency and / or resource utilization efficiency, can advantageously be achieved, and / or a particularly high operational reliability can be achieved, in particular by preventing lubricant from escaping onto a surface of the rope.

[0022] If, in addition, the first groove has a groove cross-sectional shape that at least substantially corresponds to an outer cross-sectional shape of the first longitudinal element, a particularly high degree of fit can advantageously be achieved. This can advantageously ensure that the lubricant does not leave the lubricant reservoir.

[0023] Furthermore, it is proposed that the rope have insert elements arranged between adjacent longitudinal elements, which are arranged in the circumferential direction between lubricant depots of the adjacent longitudinal elements. This advantageously makes it possible to achieve a particularly high level of operational reliability, in particular by preventing lubricant from escaping onto a surface of the rope. In particular, the insert elements are made of a plastic, for example a polymer. The insert elements form filler elements which at least partially, in particular largely, fill the free spaces between longitudinal elements. The insert elements could also be formed from a plurality of fibers, e.g. plastic fibers. In particular, the insert element, preferably each insert element, rests in contact with at least two adjacent longitudinal elements of the longitudinal elements of the rope.In particular, it is conceivable that the insert elements touch the rope core in circumferential areas of the rope core between the lubricant deposits.

[0024] Furthermore, a cable car, in particular a passenger cable car and / or a material cable car, is proposed, which includes the cable. This advantageously allows for a long service life of the cable car and / or particularly quiet operation.

[0025] Furthermore, a method for producing the rope, in particular the wire rope, preferably the cable car traction wire rope and / or the cable car hoist wire rope, is proposed, wherein a lubricant is applied in regions to an outer surface of the rope core and / or to a rear side of the longitudinal elements or insert elements facing the rope core, in particular those forming the innermost rope layer of the rope. This advantageously makes it possible to obtain a rope with a particularly long service life and particularly quiet running properties. In particular, the lubricant is applied, preferably continuously, during a stranding process in which the longitudinal elements are wrapped around the rope core.

[0026] If the lubricant is applied to the rope core as spiral-shaped lubricant strips, spatially separated lubricant deposits can advantageously be introduced into the rope. In particular, lubricant nozzles dispensing the lubricant are rotated around a longitudinally conveyed rope core. Preferably, the rope core is rotationally fixed. Alternatively, however, it is also conceivable for the rope core to rotate during longitudinal conveyance. In this case, the lubricant nozzles could also rotate or remain stationary to create the spiral-shaped lubricant strips around the rope core.

[0027] If the lubricant is also introduced into grooves in the rope core that run spirally around the rope core, the spatial containment of the lubricant deposits created in the rope can be advantageously improved.

[0028] Furthermore, it is proposed that immediately after the application of the lubricant, the longitudinal elements are stranded spirally around the rope core and brought into contact with the rope core. This advantageously enables efficient, rapid, and in particular continuous, preferably length-independent, production of the rope according to the invention. In particular, lubrication and stranding take place continuously. In particular, the amount of lubricant applied is selected such that the lubricant is not / cannot be forced out of the rope after stranding and that the lubricant deposits do not bond with one another after stranding and / or lubricant is not exchanged between the lubricant deposits.

[0029] The rope according to the invention, the cableway according to the invention, and / or the method according to the invention are not intended to be limited to the application and embodiment described above. In particular, the rope according to the invention, the cableway according to the invention, and / or the method according to the invention may have a number of individual elements, components, and units that differs from the number stated herein to fulfill a function described herein. Drawings

[0030] Further advantages will become apparent from the following description of the drawings. The drawings illustrate four exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into useful further combinations.

[0031] They show: Fig. 1 schematically and by way of example a cable car with a rope, Fig. 2 a schematic cross-sectional view of the rope, Fig. 3 a schematic flow diagram of a method for producing the rope, Fig. 4 schematically a first section of a production device in operation for producing the rope, Fig. 5 schematically a second, enlarged section of the production device, Fig. 6 a schematic cross-sectional view of an alternative rope, Fig. 7 a schematic side view of a partial section of an alternative rope core of the alternative rope having several grooves filled with lubricant, Fig. 8a a schematic plan view of a cross section of a first further alternative rope, Fig. 8b a schematic plan view of a cross section of a second further alternative rope, Fig. 9 a schematic cross-sectional view of a first other alternative rope, which differs from the rope of the Figure 2only differs by the arrangement of lubricant depots, and Fig. 10 a schematic cross-sectional view of a second alternative rope, which differs from the rope of the Figure 2 only differs in the arrangement and number of lubricant depots. Description of the embodiments

[0032] The Figure 1 shows a schematic and exemplary cable car 50. The cable car 50 is designed as a passenger transport cable car. The cable car 50 could alternatively be designed as a material cable car. The cable car 50 comprises a cable 10. The cable 10 is designed as a haulage cable of the cable car 50. Alternatively, the cable 10 could also be designed as a traction cable of a cable car 50. The cable car 50 is designed, for example, as a three-cable revolving cable car. However, other cable car types with the cable 10 are also conceivable.

[0033] The Figure 2shows a schematic cross-sectional view of the rope 10. The rope 10 is designed as a wire rope. The rope 10 is designed as a cable car traction wire rope. Alternatively, the rope 10 could also be designed as a cable car hoist wire rope. The rope 10 comprises a rope core 20. The rope 10 comprises a plurality of longitudinal elements 12, 14. The rope core 20 is made of a material with a lower modulus of elasticity than the longitudinal elements 12, 14. The rope core 20 is made of a material with a lower modulus of compression than the longitudinal elements 12, 14. The rope core 20 is non-metallic. The rope core 20 is made of a plastic. The rope core 20 is designed as a monolithic component. The rope core 20 is manufactured as an extruded component. Alternatively, the rope core 20 could also be designed and / or manufactured differently, e.g. from a stranded (PP) split fibre yarn. Figure 2The rope core 20 shown as an example has a cylindrical outer surface 26. The Figure 2 The rope core 20 shown as an example has a groove-free outer surface 26. The Figure 2 The rope core 20 shown as an example is made of solid material. However, it is also conceivable that the rope core 20 is hollow.

[0034] The Figure 2 The rope 10 shown as an example comprises six longitudinal elements 12, 14. The longitudinal elements 12, 14 are stranded around the rope core 20. The longitudinal elements 12, 14 are at least substantially identical to one another. The longitudinal elements 12, 14 are designed as wire strands. The wire strands each comprise a plurality of wires. The wires of the wire strands are made of steel. The wires of the wire strands are steel wires. Figure 2The rope 10 shown as an example is a 6x36 Warrington-Seale wire strand rope. The rope 10 has insert elements 42, 44. The insert elements 42, 44 are arranged between the individual stranded longitudinal elements 12, 14. The insert elements 42, 44 extend helically around the rope core 20. The insert elements 42, 44 are made of a polymer. Each of the insert elements 42, 44 arranged between two adjacent longitudinal elements 12, 14 is arranged in the circumferential direction 32 of the rope 10 between two adjacent lubricant depots 16, 22 of the two adjacent longitudinal elements 12, 14.

[0035] The rope 10 has a first lubricant depot 16. The rope 10 has a second lubricant depot 22. The rope 10 has further lubricant depots. The number of lubricant depots 16, 22 of the rope 10 corresponds to the number of longitudinal elements 12, 14 (here: 6) of an innermost rope layer 34 of the rope 10. The lubricant depots 16, 22 are each filled with a lubricant 30 / formed by a lubricant accumulation. The first lubricant depot 16 is limited to a first contact area 18. In the first contact area 18, the rope core 20 and the first longitudinal element 12 touch each other. The first contact area 18 runs spirally around the rope core 20 (see also Fig. 5 or 7 ). The second lubricant reservoir 22 is limited to a second contact area 24. In the second contact area 24, the rope core 20 and the second longitudinal element 14 touch each other. The second contact area 24 runs spirally around the rope core 20 (see also Fig. 5 or 7 ). The first lubricant reservoir 16 and the second lubricant reservoir 22 are spatially completely separated from each other. All lubricant reservoirs 16, 22 of the rope 10 are spatially completely separated from each other. All lubricant reservoirs 16, 22 of the rope 10 extend seamlessly to each other.

[0036] The lubricant 30 contained in the lubricant reservoirs 16, 22 deviates significantly from the specifications of Annex A "General Requirements for Lubricants" of the standard EN 12385-8:2002 (D). The lubricant 30 contained in the lubricant reservoirs 16, 22 has a friction coefficient of less than 0.2. The friction coefficient is determined according to the standard DIN 21258:2007-10 (item 5). The content of the standards DIN 21258:2007-10 and / or EN 12385-8:2002 (D), including Annex A, is hereby incorporated in its entirety by reference into this disclosure. Preferably, the lubricant 30 also has a friction coefficient greater than 0.02. The lubricant 30 contained in the lubricant depots 16, 22 comprises an EP (Extreme Pressure) additive 38 (see also Fig. 7 ). All lubricant reservoirs 16, 22 contain the same lubricant 30.

[0037] The Figure 3 shows a schematic flow diagram of a method for producing the rope 10. The Figures 4 and 5show sections of a production device 60 in operation for producing the rope 10. In at least one production step 52, the rope core 20 is produced, for example by extrusion (see also Fig. 4 ). Alternatively, the rope core 20 could also be designed and / or manufactured differently, e.g., from a stranded (PP) split fiber yarn. The rope core 20 can be produced in a cylindrical shape or provided with spiral grooves on a cylindrical surface. In at least one further manufacturing step 54, the lubricant 30 is applied in regions, in particular in strips, to an outer surface 26 of the rope core 20. The lubricant 30 is applied to the rope core 20 during a longitudinal movement of the rope core 20, so that adhering lubricant strips 46 form on the outer surface 26 of the rope core 20 (see also Figures 4 or 5). The applied lubricant strips 46 then encircle the rope core 20 in a spiral manner. In an alternative or additional manufacturing step 56, the lubricant 30 is applied to a rear side 36 of the longitudinal elements 12, 14 forming the innermost rope layer 34 of the rope 10, facing the rope core 20. The lubricant 30 is applied to the rope core 20 and / or to the longitudinal elements 12, 14 by means of lubricant nozzles 40 (see also Figures 4 or 5). For this purpose, the lubricant nozzles 40 dispensing the lubricant 30 are preferably rotated uniformly around the longitudinally moving rope core 20. If the rope core 20 has been provided with grooves 48 spiraling around the rope core 20 in the previous manufacturing step 52, the lubricant 30 is then introduced into the grooves 48 of the rope core 20 spiraling around the rope core 20 by means of the lubricant nozzles 40 in the current manufacturing step 56. In at least one further manufacturing step 58, immediately after the application of the lubricant 30, the longitudinal elements 12, 14 are stranded spirally around the rope core 20 and are thereby brought into contact with the rope core 20. In the manufacturing step 58, the insert elements 42, 44 are also stranded around the rope core 20 together with the longitudinal elements 12, 14 at the same time.

[0038] The Figure 6shows a schematic cross-sectional view of an alternative rope 10', which differs from the rope 10 of the Figure 2 differs only in the design of the rope core 20'. The alternative rope core 20' has grooves 48 running spirally around the alternative rope core 20'. Each of the longitudinal elements 12, 14 is inserted into one of the grooves 48. The grooves 48 each have a groove cross-sectional shape that at least substantially corresponds to an outer cross-sectional shape of the associated longitudinal element 12, 14. The lubricant deposits 16, 22 are each arranged within a groove 48 of the grooves 48. The grooves 48 of the alternative rope core 20' spatially delimit the respective lubricant deposits 16, 22 in the circumferential direction 32 of the alternative rope core 20'.

[0039] The Figure 7shows schematically a side view of a partial section of an alternative rope core 20' having the grooves 48 ("naked") with the lubricant 30 introduced into the grooves 48.

[0040] The Figures 8a and 8b show schematic plan views of cross sections of further alternative ropes 10", 10'", which differ from the ropes 10, 10' of the preceding figures by the design of the longitudinal elements 12, 14 and the rope core 20". The longitudinal elements 12, 14 of the first further alternative rope 10" are in the Figure 8a designed as 21-filler wire strands. The longitudinal elements 12, 14 of the second alternative rope 10‴ are in the Figure 8bexemplified as 29-filler wire strands. The further alternative ropes 10", 10" are designed free of insert elements 42, 44. Alternatively, however, the further alternative ropes 10", 10" could also have insert elements 42, 44 between the longitudinal elements 12, 14. The further alternative ropes 10", 10" each have a further alternative rope core 20". The further alternative rope core 20" has 26 grooves 48 on its outer surface. The grooves 48 of the further alternative rope core 20" are designed differently in shape and number than the grooves 48 of the alternative rope core 20'.

[0041] The Figure 9 shows a schematic cross-sectional view of a first other alternative rope 10a, which differs from the rope 10 of the Figure 2 only by the arrangement of lubricant reservoirs 16, 16a. The Figure 9 to the Figure 2The difference in lubricant depot arrangements shown can also be applied to the embodiments of the Figures 6 to 8b The data in the Figure 9The rope 10a shown as an example comprises six longitudinal elements 12, 14. The rope 10a has insert elements 42, 44. The insert elements 42, 44 are arranged between the individual stranded longitudinal elements 12, 14. The rope 10a has a first lubricant depot 16a. The rope 10a has a second lubricant depot 22a. The rope 10a has further lubricant depots. The number of lubricant depots 16a, 22a of the rope 10a corresponds to the number of insert elements 44, 42 (here: 6) of the rope 10a. The lubricant depots 16a, 22a are each filled with a lubricant 30 / formed by a lubricant accumulation. The first lubricant depot 16a is limited to a first contact area 18a. In the first contact area 18a, the rope core 20 and the first insert element 42 touch each other. The second lubricant depot 22a is limited to a second contact area 24a.In the second contact area 24a, the rope core 20 and the second insert element 44 touch each other. The first lubricant depot 16a and the second lubricant depot 22a are spatially completely separated from each other.

[0042] The Figure 10 shows a schematic cross-sectional view of a second alternative rope 10b, which differs from the rope 10 of the Figure 2 only differs in the arrangement and number of lubricant reservoirs 16, 16a. Figure 10 to the Figure 2 The difference in lubricant depot arrangements and lubricant depot numbers shown can also be applied to the embodiments of the Figures 6 to 8b The data in the Figure 10The rope 10b shown as an example comprises six longitudinal elements 12, 14. The rope 10b has insert elements 42, 44. The insert elements 42, 44 are arranged between the individual stranded longitudinal elements 12, 14. The rope 10b has a first lubricant depot 16. The rope 10b has a further first lubricant depot 16a. The rope 10b has a second lubricant depot 22. The rope 10b has a further second lubricant depot 22a. The number of lubricant depots 16, 16a, 22, 22a of the rope 10b corresponds to the sum of the longitudinal elements 12, 14 of an innermost rope layer 34 of the rope 10 and the insert elements 42, 44 of the rope 10b (here a total of 12). The lubricant reservoirs 16, 16a, 22, 22a are each filled with a lubricant 30 / formed by a lubricant accumulation. The first lubricant reservoir 16 is limited to a first contact area 18.In the first contact area 18, the rope core 20 and the first longitudinal element 12 touch each other. The further first lubricant depot 16a is limited to a further first contact area 18a. In the further first contact area 18a, the rope core 20 and the first insert element 42 touch each other. The second lubricant depot 22 is limited to a second contact area 24. In the second contact area 24, the rope core 20 and the second longitudinal element 14 touch each other. The further second lubricant depot 22a is limited to a further second contact area 24a. In the further second contact area 24a, the rope core 20 and the second insert element 44 touch each other. The lubricant depots 16, 16a, 22, 22a are all spatially completely separated from one another. Reference symbol

[0043] 10Rope 12Longitudinal element 14Longitudinal element 16Lubricant reservoir 18Contact area 20Rope core 22Lubricant reservoir 24Contact area 26Outer surface 30Lubricant 32Circumferential direction 34Innermost rope layer 36Back side 38EP additive 40Lubricant nozzle 42Insert element 44Insert element 46Lubricant strip 48Groove 50Cableway 52Manufacturing step 54Manufacturing step 56Manufacturing step 58Manufacturing step 60Manufacturing device

Claims

1. Rope (10, 10', 10", 10‴, 10a, 10b), in particular a wire rope, preferably a cable car traction wire rope and / or a cable car hoist wire rope, with a rope core (20, 20', 20") and with a plurality of longitudinal elements (12, 14), in particular wires or wire strands, which are stranded around the rope core (20, 20', 20"), characterized by at least one first lubricant reservoir (16, 16a) which is limited to a contact region (18, 18a) spirally encircling the rope core (20, 20', 20") between a first longitudinal element (12) of the longitudinal elements (12, 14) and the rope core (20, 20', 20") or between an insert element (42) arranged between adjacent longitudinal elements (12, 14) of an innermost rope layer (34) of the rope (10, 10', 10", 10'", 10a, 10b), and the rope core (20, 20', 20").

2. Rope (10, 10', 10", 10‴, 10a, 10b) according to claim 1, characterized byat least one second lubricant reservoir (22) which is limited to a contact region (24) extending spirally around the cable core (20, 20', 20") between a second longitudinal element (14) of the longitudinal elements (12, 14) and the cable core (20, 20', 20").

3. Rope (10a, 10b) according to claim 1 or 2, characterized by at least one second lubricant depot (22a) which is limited to a contact area (24a) spirally encircling the rope core (20, 20', 20") between a second insert element (44) and the rope core (20, 20', 20").

4. Rope (10, 10', 10", 10‴, 10a, 10b) according to claim 2 or 3, characterized in that the first lubricant depot (16, 16a) and the second lubricant depot (22, 22a) are spatially separated from one another.

5. Rope (10, 10', 10", 10'", 10a, 10b) according to the preamble of claim 1, in particular according to one of the preceding claims, characterized bya number of lubricant depots (16, 22) corresponding to a number of longitudinal elements (12, 14) of the innermost rope layer (34) or a number of insert elements (42, 44) or a sum of longitudinal elements (12, 14) of the innermost rope layer (34) and insert elements (42, 44), which are each limited to contact areas (18, 24) between the respective longitudinal element (12, 14) and the rope core (20, 20', 20"), which contact areas extend spirally around the rope core (20, 20', 20") and are preferably spatially separated from one another.

6. Rope (10, 10', 10", 10‴, 10a, 10b) according to one of the preceding claims, which is designed as a cable car traction wire rope and / or cable car hoist wire rope, characterized in that the lubricant reservoir(s) (16, 22) comprise(s) a lubricant (30) which deviates significantly from the specifications of Annex A "General requirements for lubricants" of standard EN 12385-8:2002 (D).

7. Rope (10, 10', 10", 10‴, 10a, 10b) according to one of the preceding claims, which is designed as a cable car traction wire rope and / or cable car hoist wire rope, characterized in that the lubricant depot(s) (16, 22) comprises / comprise a lubricant (30) which has a coefficient of friction of less than 0.22, in particular less than 0.20, preferably less than 0.10 and preferably less than 0.05, as determined in particular according to the standard DIN 21258:2007-10.

8. Rope (10, 10', 10", 10‴, 10a, 10b) according to one of the preceding claims, characterized in that a lubricant (30) contained in the lubricant depot(s) (16, 22) comprises an EP (Extreme Pressure) additive (38).

9. Rope (10', 10", 10‴) according to one of the preceding claims, characterized in that the cable core (20', 20") has at least one first groove (48) which runs spirally around the cable core (20', 20") and within which the first lubricant reservoir (16) is arranged.

10. Rope (10', 10", 10‴) according to claim 9, characterized in that the first groove of the rope core (20', 20") spatially delimits the first lubricant depot (16) at least in the circumferential direction (32) of the rope core (20', 20").

11. Rope (10', 10", 10‴) according to claim 9 or 10, characterized in that the first groove (48) has a groove cross-sectional shape that at least substantially corresponds to an outer cross-sectional shape of the first longitudinal element (12).

12. Rope (10, 10') at least according to claim 4, characterized in that the insert elements (42, 44) arranged between adjacent longitudinal elements (12, 14) are arranged in the circumferential direction (32) between lubricant depots (16, 22) of the adjacent longitudinal elements (12, 14).

13. Cable car (50), in particular a passenger cable car and / or material cable car, with a cable (10, 10', 10", 10‴, 10a, 10b) according to one of claims 1 to 12.

14. A method for producing a rope (10, 10', 10", 10‴, 10a, 10b), in particular a wire rope, preferably a cable car traction wire rope and / or a cable car hoist wire rope, preferably according to one of claims 1 to 12, with a rope core (20, 20', 20") and with a plurality of longitudinal elements (12, 14), in particular wires or wire strands, characterized in that a lubricant (30) is applied in regions to an outer surface (26) of the rope core (20, 20', 20") and / or to a rear side (36) facing the rope core (20, 20', 20") of the longitudinal elements (12, 14) or the insert elements (42, 44), in particular forming an innermost rope layer (34) of the rope (10, 10', 10", 10'", 10a, 10b).

15. Method according to claim 14, characterized in that the lubricant (30) is applied to the rope core (20, 20', 20") as lubricant strips (46) running spirally around the rope core (20, 20', 20").

16. Method according to claim 14 or 15, characterized in that the lubricant (30) is introduced into grooves (48) of the rope core (20, 20', 20") which run spirally around the rope core (20', 20") of the rope (10', 10", 10‴).

17. Method according to one of claims 14 to 16, characterized in that immediately after the application of the lubricant (30), the longitudinal elements (12, 14) are stranded spirally around the rope core (20, 20', 20") and are thereby brought into contact with the rope core (20, 20', 20").

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