DE1685831A1 - Wire rope - Google Patents

Description

British. Ropes Limited, Warmsworth Hall, Doncaster, Yorkshire / England

"Wire rope"

The invention relates to a system consisting of individual strands Wire rope.

When forming a wire rope from strands, there are two basic manufacturing processes, one of which is each has its own goals and disadvantages.

The first method is the so-called Ordinary lay, in which the wire layers are wound one on top of the other with almost the same lay angle, see above that the wires of an overlying layer cross the wires of the underlying layer. For example, there is a common rope of this type consisting of 18 wires over 12 wires over 6 wires over a wire; it will

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usually referred to as 18/12/6/1 rope.

This method has the advantage of evenly distributing the load between the layers, but it does lead secondary buckling and wire breaks at the points where the wires come from one another following layers touch each other.

The second method is known as Lang's lay, at the successive layers of wires with the same lay length are wound on top of each other.

If more than two layers of wires are connected with the same - lay, difficulties arise in two ways. On the one hand there is the modulus of elasticity the layers below are much higher than the layers above, because the wires are shorter and shorter are placed at a smaller flapping angle. Therefore, if the rope is stretched due to the application of a load, the inner wires carry a higher relative one Proportion of the load and are stretched to a greater extent. Second, when bending a rope can be due the fact that due to the nature of the construction all wire layers are pressed tightly together, the wires do not compensate for the additional loads, which occur because an outer section becomes longer or shorter.

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Generally lead if more than two layers of wire ■■ are provided with the same impact, the mutual loads caused by bending and / or stretching to unstable mechanical conditions and premature damage to the rope

The aim of the invention is to eliminate the disadvantages of these two methods.

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The invention relates to composite wire rope, in the case of the inner strand worked with Lang lay at least two further wire layers of in relation to one another the same lay (hereinafter referred to as double position) but in relation to ordinary lay are wound to the inner strand.

It is preferable to eliminate secondary buckling loads and undesired wire misalignments and To facilitate relative sideways movement during bending of the rope, the outer surface of the inner wire strand flattened. This can be done either by pulling the inner wire strand, with a tool or by rolling under high pressure or by using preformed Wires with a relatively smooth outer surface can be achieved.

He. can also be a wire layer with an essentially flattened cylindrical outer surface borrowed over the inner * · :. : ^; ^ _& 109818/0511

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Strand "-be attached" before the other two Layers are applied.

The inner strand could, for example, consist of a 9/9/1 Lang lay strand are made crosswise over the two subsequent layers of 18 wires are laid with the same lay in relation to one another.

If necessary, two additional layers can be wrapped over it that are arranged in a regular lay in relation to the first two and e.g. -.jje- 30 wires have and are formed in Lang lay to one another.

The outer surface of the first two layers of wire can then be provided with a planar surface in one of the ways described in connection with the inner '. Core have been provided.

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The invention can be used for various types of lang lay ropes are used, which are known as Lang lay Jülldraht-Iyp, so-called Seale-Schlag, Warrington Beat and Seale-Warrington-Sehlag and which are defined as follows:

. Lang-lay-Gülldraht-gypi The number of wires in an upper layer increases to twice the value of the number of wires in a lower layer.

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lying layer by inserting or inserting smaller wires (over-filler wires) in the spaces between the underlying location. The wires in the overlying layer lie at an angle on the sides of the liill wires and the main wires underneath. For example, 12 wires are over 6 wires with 6 smaller wires, which lie in the outer spaces of the inner 6 wires, over a wire, what is referred to as a 12/6 + 6 $ / 1 rope will.

Seale-Sohlag; The wires of an overlying layer with approximately the same diameter lie in the interstices of an underlying layer. For example, there are 9 wires over 9 wires over one wire. Referred to as: 9/9/1 rope.

Warrington strike: Two different wire sizes are laid over an underlying layer of wires. For example, 8 large wires with 8 small wires are laid over Q 8 larger wires. The 8 large wires are in the gaps and the 8 small wires are on top of the 8 larger wires below. Referred to as (8 + 8) / 8/1 rope.

Seale-Warrington-Schlagt More than two layers of wire are wound with the same lay length in order to obtain a larger rope diameter, for example ^ se

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16 wires across 8 large., With 8 small wires across 8 wires over in turn 8 wires over one wire. Marked as _16 / 8 + 8/8/8/1 rope «

The inner strand could consist of (5 + 5) / 5 / i or 12/6 + 6]? / 1 with an overlying arrangement with a similar main angle of attack to the of the inner strand - of two layers of wire of the same lay consisting of, for example, (15 +15) / 15 or any similar combination. For even thicker ropes, a or several further double layers are arranged.

Further features, details and advantages of the invention result from the following description of the drawing.

Pig. 1 shows a cross section through a rope with an inner strand 1 with Lang lay in 6 + 6F / 6/1 design, over the two outer layers -2, 3 of 12 wires each Are wrapped in the same position to each other, however, they are arranged in ordinary lay opposite the inner strand.

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Pig. FIG. 2 is a cross-section through one of FIG. 1 similarly composed rope in which the inner strand 1 is a 12/9/1 arrangement which is deformed by means of a tool was made to eliminate the gaps.

. 3 is a cross section through one of the pig. 1 similar rope, at decn between the inner one ;. 2.3 Iiitze 1 and aen two outer layers a wire support in Porm a cylindrical jacket is disposed, which has a smoothed inner and outer cylindrical peripheral surface * Her impact of the wires in this casing 4 with respect to the inner and outer part of the cable can vary. ·

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Claims (4)

Claims. 1. A composite wire rope with an inner strand executed in Lang lay, characterized in that over the inner strand (1) at least two more wire layers (2, 3) are wound, their wires in Lang lay to each other and in ordinary lay opposite the inner strand are arranged. 2. Wire rope according to claim 1, characterized in that one or more double layers over the two additional layers (2, 3) are wound, the wires of a double layer in Lang lay to each other but in relation to the double layer over which they are wound in Ordinary lay are arranged. 3. Wire rope according to claim 1 or 2, characterized in that that the core strand (1) has a flattened surface. -. 4. Wire rope according to one of claims 1 to 3ι characterized in that the outer surface of the two inner additional layers (2, 3) is flattened. Lee on the side