WO2013087840A1

WO2013087840A1 - Lubricated wire cable

Info

Publication number: WO2013087840A1
Application number: PCT/EP2012/075543
Authority: WO
Inventors: Wolfram Vogel; Wolfgang Scheunemann; Lothar SIEBER; Thomas SCHONLAU
Original assignee: Pfeifer Drako Drahtseilwerk Gmbh & Co. Kg
Priority date: 2011-12-15
Filing date: 2012-12-14
Publication date: 2013-06-20
Also published as: DE202011109156U1

Abstract

A wire cable (10) which has a lubricant applied in a solid state to at least one wire. The lubricant is preferably a wax, an enamel, a coating of extruded material and/or a film. It is additionally possible for at least one sacrificial lubricant element (18), e.g. a wire made of zinc sulphide (ZnS), titanium oxide, barium sulphate (BaSO4) and/or polytetrafluoroethylene (PTFE/ Teflon (R)) to be introduced into the interior of the wire cable (10).

Description

LUBRICATED WIRE PART

Technical area

The invention relates to a wire rope. State of the art

In machines for the carriage of goods and passengers such as shaft conveyors or elevators, several suspension elements are used in parallel, which are actively involved in the function. The support means connect car and counterweight or the two-sided arranged cars with each other and friction with the running disk. Typical suspension elements are

Steel wire ropes consisting of the four basic elements steel wire, stranded wire, steel or fiber core and lubrication. The ability of the ropes to be able to run over slices is due to the multitude of wires that are against each other

can move. This shift is from the

Friction conditions and thus the lubrication dependent.

For lubrication, a distinction can be made between lubrication during rope production and relubrication during operation. Lubrication during manufacturing is bound by rules that define a lubricant entry. In operation, the relubrication is partially inaccurate and / or not always accurately met

Inspection intervals linked.

The lubrication of the steel cables during production is currently carried out in a lubrication process in the strand production and another lubrication process when stranding 6, 8 or 9 strands and the steel or fiber core to the rope. The lubricant is metered at predetermined temperatures and viscosities in the so-called. Verseilpunkt introduced by means of nozzles. The relubrication during operation is usually done manually by applying lubricant (usually containing solvent), for example, with a brush and / or cloth. Another variant is the spraying of lubricant.

The above-mentioned methods are not very reliable, especially since in the relubrication applied

Quantity of lubricant can not be determined accurately. The life of the steel wire ropes when running over discs is limited. A lifetime guarantee can not be given, as long as the stresses, their frequencies and the maintenance (this includes the lubrication) are not clarified in the operating phase.

Presentation of the invention

The invention has for its object to provide a wire that has defined lubrication and thus friction conditions, and in which preferably can be dispensed with relubrication.

The solution to this problem is achieved by the rope described in claim 1 of the application.

Accordingly, this has at least one wire on which a lubricant is firmly applied. As explained in more detail below, this may be a variety of substances that are applied in different ways to the wire, preferably several wires firmly so that they the friction and lubrication conditions of the considered wire with respect to the adjacent wires and thus the rope

set overall and preferably reduce the coefficient of friction compared with untreated wire. As a result, the friction can be set selectable by a suitable choice of the lubricant. Under "firmly applied" is too

understand that the lubricant is initially applied insoluble on the wire. During use, this order may change. Thus, the invention allows the friction and lubrication conditions over the life of the rope remain at least largely constant, so that always a

Basic lubrication is given, and costly and undefined relubrication can be omitted. This also allows the previously energetic consuming lubrication during the

Rope production saved, and the overall rope production cost-optimized. This effect is also due to the saving of time-consuming inspections and relubrication during operation. In this context, at the same time, the safety and reliability of a cable-equipped system is improved.

Preferred developments of the wire rope according to the invention are described in the further claims.

The lubricant is preferably a paint and / or a coating and / or an extruded material and / or a film. These materials can be applied in an economically favorable manner. The solid compound of the lubricant takes place in the case of a paint, for example, by air curing and / or - drying, UV and / or infrared drying and / or

Evaporation of a solvent.

With regard to the ingredients of the lubricant, favorable properties for zinc sulfide, waxes, titanium oxide, barium sulfate and Teflon were found in the first experiments. One or more of these materials may be applied to the wires by brushing, spraying, dipping, coating, extruding and / or evaporating. This is done, as mentioned, on the individual wire, ie before the Verlit tion, in other words the production of a strand of several wires or before the stranding, ie before the production of the rope of several strands and / or wires. In special applications, it has proven to be beneficial to apply only one or more wires inside the rope or their strands a lubricant. This can be a good lubrication or a lower

Reibwert be provided inside the rope, which has a favorable effect on the life of the rope. The

Friction values of external wires, however, can

be set comparatively high, which for the

Drift capability, i. the frictional connection with

Traction sheaves is low. The lubrication of such an embodiment may be referred to as "hybrid lubrication" after having significantly different inside the rope

Lubricating conditions are set as on the outside.

In a preferred embodiment, the

Wire rope according to the invention further comprises a steel insert between a core strand and a plurality of outer strands. For such a steel insert it is preferred that all the wires have a lubricant in the manner according to the invention.

Favorable properties are also expected for the steel insert and / or a strand when it is wrapped and / or foiled with foil and / or with a film

wrapped on extruded material. This has the advantage that any lubricant or lubricant is held inside the strands or steel inserts.

The extruded material may be PVC,

Polyamide, polypropylene, polyethylene, polyurethane and / or rubber act.

In connection with the rope according to the invention it is further conceivable to use in this, i. preferably provided internally and particularly preferably between a steel insert and a core strand, at least one sacrificial lubricant element. In other words, in this area, an element, for example a wire or the like of, for example, zinc sulfide,

Titanium oxide, barium sulfate and / or Teflon is introduced and is designed to undergo some abrasion during operation to provide lubrication in this way and to dissolve to some extent over the life of the rope. One or more such wires can, for example, with the same helical as the

Steel insert and / or the strands are provided. Regarding the victim lubricant is to emphasize that it is part of a wire rope as an independent object of the

this application is to be considered. In other words, a victim lubricating element according to the present application can be provided independently of the features of claim 1 and the preferred features described above, but advantageously combined with them as desired. This also applies to all other features described herein.

A wire rope related method of making a wire rope according to the invention may include the step of firmly adhering a lubricant to at least one wire. Preferred developments of this process essentially correspond to the preferred one

Embodiments of the wire rope according to the invention. Furthermore, all of the preferred embodiments described below may be used

Measures under the manufacturing process to the

Wire rope are applied and vice versa.

Favorable properties are expected when the lubricant is applied by painting, spraying, dipping, coating,

Extrusion and / or vapor deposition is applied.

In particular, this application takes place before the stranding of several wires into a strand and / or before the stranding of several strands and / or wires to the rope.

As mentioned, particularly good properties are expected if a steel insert and / or at least one strand after the application of the lubricant to individual wires of a film _r

6 wrapped or wrapped with an extruded material.

Short description of the drawing

The following is an example in the drawing

illustrated embodiment of the invention explained in more detail.

The figure shows an inventive wire rope in

Cross-section .

Detailed description of a preferred embodiment of the invention

As can be seen from the figure, the wire rope 10 according to the invention in the embodiment shown essentially a core strand 12, numerous outer strands 14 and a

Steel insert 16 in the form of several, relatively thin strands between the core 12 and the outer strands 14. In the embodiment shown, numerous opera lubricating elements 18 are provided between the steel core 16 and the core strand 12. For an outer strand 20 is further indicated that it may be wrapped with an extrusion layer.

Claims

claims

1. Wire rope (10), in which a lubricant is firmly applied to at least one wire.

2. Wire rope according to claim 1,

By doing so, that is

the lubricant is a lacquer and / or a coating and / or an extruded material and / or a film.

3. Wire rope according to claim 1 or 2,

By doing so, that is

the lubricant zinc sulfide, a wax, titanium oxide,

Barium sulfate and / or Teflon has.

4. Wire rope according to one of the preceding claims,

By doing so, that is

only on wires inside the wire rope (10) and / or a strand (12, 14, 20), a lubricant is applied.

5. Wire rope according to one of the preceding claims,

By doing so, that is

this further comprises a steel insert (16) between a core strand (12) and a plurality of outer strands (14), wherein preferably all the wires with a

applied lubricant are provided.

6. Wire rope according to one of the preceding claims,

By doing so, that is

at least one ze ze of the core (12) and outer strands (14) or the steel insert (16) wrapped with a film and / or foiled and / or is coated with an extruded material.

7. Wire rope according to one of claims 2 to 6, characterized in that

the extruded material PVC, Polyamide, Polypropyl

Polyethylene, polyurethane and / or rubber.

Wire rope according to one of the preceding claims, characterized in that

this further comprises at least one sacrificial lubricating element (18), which is preferably arranged between a core strand (12) and a steel insert (16).