EP1321568A2 - Wire rope with several strands and method and device for introducing a support strand - Google Patents

Abstract

A splice in a multi-strand wire cable includes plastic support strands (6) that are inserted between adjacent wire strands (2). The plastic strands deform to take up the space between the wire strands and prevent chafing, especially when cable is bent while passing over pulleys. Independent claims are also included for: (1) the process of inserting support strands where the wire strands are pushed apart by shaped rollers (7), which have a groove (9) and a concave flank (10), so that the plastic strand can be inserted. A split frame carries three rollers and strand supply reels, and is turned by hand to move in a spiral path along the cable splice. The process is then repeated for the other three strands.; and (2) the apparatus for carrying it out.

Description

The invention relates to a wire rope with several strands, wherein at least one long splice connection is provided.

Furthermore, the invention relates to a method for Introducing at least one support strand in a multi-strand Wire rope.

Furthermore, the invention also relates to a device for inserting at least one support strand in a multi-strand Wire rope.

Long splice connections are used to connect the ends of rope sections interconnected, which in particular the manufacture of endless rope loops from finite rope sections for transport systems, for example cable cars, is made possible. When making the long splice connection, there is a reciprocal one Lay the individual strands of both rope ends into one another. The stranded wires replaced here in the area of Long splice connection previously made in this area from the wire rope removed central insert. This configuration creates a frictional connection that holds the rope sections together guaranteed even under the influence of high tensile forces, in particular even with wire ropes, which are in constant operation Are subjected to bending stress. As a result, it comes between the strands of the rope friction with respect to Achievable lifespan is of great importance when the wire ropes are intended for use in transport systems and in Operation run continuously over roles.

The object of the invention is a wire rope of the beginning to create the type mentioned, in which the friction between the Strands as well as the compressive stresses at crossing points of the Strands (at the so-called splice nodes) should be kept as low as possible can and a largely uniform spacing of the strands is guaranteed becomes. This can reduce the development of wire breaks and thus an increase in the lifespan can be achieved.

Furthermore, a method and a device according to the invention are intended to be created in the area of a long splice connection of the wire rope support strands on simple and quick Way to contribute.

The wire rope of the type mentioned is according to the invention characterized in that in the area of the long splice connection at least between two neighboring strands at least a braid is provided. By providing support strands in the area of the long splice connection of the wire rope Strands also reliably spaced apart in the splice area held and thus adverse friction between neighboring Strands switched off. It also results from the uniform Distance of the strands to each other also in the splice area better the outline of the rope approximated to the circular shape, what a advantageous contribution to the desired smoothness of the rope he brings. The support strands also not only secure one mutual distance between the adjacent strands of the wire rope from each other, making not only the friction of neighboring Strands against each other is avoided, but the support strands can also used as a very effective lubricant reservoir in which already during production and also later Lubricant can be easily introduced because the support strands through the internal gap between neighboring strands are accessible.

The disadvantageous friction between all neighboring strands of the wire rope, it is convenient if between one in the middle of the long splice connection replacing inlay strands surrounding at least one Support wire is provided.

If a rope made of plastic, preferably as a support strand Polyamide, which is provided, is a stable support and the Elimination of the friction between two neighboring strands guaranteed a comparatively long period.

The method of the type mentioned is in accordance with the invention characterized in that in the area of a long splice connection at least two strands surrounding an insert strand be pushed apart, and the support strand between the apart from the strands. In this way can in a simple, efficient way also in the area of a Long splice connection support strands are introduced, this being the case can happen regardless of the number of strands of the wire rope; this also means that the rope strands are distanced in this area and achieved a reduction in the friction between them.

It is for a particularly efficient, quick introduction an advantage if several support strands are used at the same time become. In particular, it is advantageous if half of the Total number of support strands is used at the same time, namely the 1st, 3rd, 5th etc. or the 2nd, 4th, 6th etc. at the same time, since thus dodging the strands to free up a gap for the Inserting the support wire is possible. With a six-strand All six support strands can be wired in just two Operations are inserted. For wire ropes with odd Number of strands, e.g. you need a seven-strand rope an additional operation in which the remaining support wire is introduced.

The device of the type mentioned is according to the invention characterized in that at least one is rotatable mounted roller for pushing apart adjacent wire rope strands is provided in the area of a long splice connection, between which the support strand is inserted, the role has a groove for guiding the support wire to be inserted. With With the help of the rotatably mounted roller adjacent to each other Wire rope strands, between which a support strand is inserted are to be pushed apart in a simple manner, whereby a gap is released between the two wire rope strands through which the support wire can be inserted. to secure reception and guidance of the support wire and thus for one reliable insertion of the support wire between the two apart pressed wire strands preferably have the role a groove receiving the support strand.

With regard to the most efficient, fast insertion possible the support strands in the long splice area of the multi-strand It is advantageous to use a wire rope if several support strands at the same time are introduced and accordingly several roles are provided, where the number of roles the number of to be brought in simultaneously Support strands corresponds. The number of roles corresponds to as already in connection with the above-mentioned procedure performed on a wire rope with an even number of strands advantageously half of the total number of wire rope strands, because on the one hand there is a dodge of the wire rope strands is possible to release an insertion gap and on the other hand the whole of the support strands only in two work steps can be introduced.

If the or each role is based on the one in the middle Groove containing narrow forehead area on both sides of which according to a concave profile towards the center area expanded, there is a kind of wedge shape on the circumference of the rollers, through which the wire rope strands are reliably pressed apart become and at the same time an adaptation to the cylindrical Mantle surface of the individual wire rope strands, creating the wire rope strands accommodated in the concave indentations to save space and thus preventing a mutual Blockage of the wire rope strands occurs. This results in thus easy, low-friction and space-saving insertion the roll between two adjacent wire rope strands.

For easy insertion of the roll (s) between two neighboring ones Wire rope strands it is useful if the reel (s) in a plane arranged perpendicular to the axis of the wire rope is (or are).

On the one hand the role (s) between two neighboring ones Introducing or closing wire rope strands in a simple manner remove and also a free-running rotary bearing of the roller (s) To ensure it is advantageous if the role (s) in each case is (are) stored in a U-shaped receiving device, which is attached to a threaded spindle. About the setting of the Threaded spindle can thus be transferred to their roles Insertion position approximated to the wire rope and after the end of the insertion process can be removed from the wire rope again. moreover can adapt to different wire rope diameters respectively.

To the device not only with different wire ropes of different diameters, but also with wire ropes with different lay angles for inserting support strands To be able to use it is favorable if the orientation of the Axis of rotation of the roller (s) to adapt to the lay angle of the Wire rope is adjustable relative to the rope axis.

If several rolls, seen in the axial direction of the wire rope, are evenly arranged around the wire rope in the circumferential direction, results in a simultaneous insertion of the support strands Pressure load evenly distributed over the circumference of the wire rope and a mutual support of the wire rope by the Rollers provided for introducing the support strands, the on the wire rope applied radial forces cancel each other out.

If the rollers are arranged on a support ring, results a structurally simple functional arrangement of the rollers, where the support ring is divided and a hinge connection can be closable in the area of a long splice connection wire rope to be provided with support strands in the interior of the Insert the support ring and then quickly and securely close it to be able to.

If on the support ring according to the number of rollers Storage spools are rotatably mounted on which the to be introduced Support strands are wound, each roll can be inserted the braid independent of the other roles with the braid be supplied. There is also easy guidance the support wire to be inserted from the supply spool to the roll.

To the tension of the support wire to be inserted between the To be able to adjust the roll and the supply spool, it is convenient if an adjustable brake is assigned to the supply spools.

The entire device is used to insert the support strands moved along the wire rope, causing the reels to be two adjacent Strands in the area where the support strand is inserted will push apart. These wire rope strands spring as the roll continues to move back to its original position back, causing the support strands in the rope assembly be included. The entire device is preferred manually moved forward and at the same time the spiral following wound strands rotated around the rope circumference. An unwanted one Reliably loosen the device from the wire rope prevent it is beneficial if a support to secure the Device is provided on the wire rope.

Fig. 1 einen Querschnitt eines mehrlitzigen Drahtseils im Bereich einer Langspleißverbindung, mit teilweise dargestellten Rollen zum Einbringen von Stützlitzen;

Fig. 2 eine perspektivische Vorderansicht einer Vorrichtung zum Einbringen von Stützlitzen im Langspleißbereich eines mehrlitzigen Drahtseils; und

Fig. 3 eine perspektivische Ansicht der Vorrichtung gemäß Fig. 2 von deren Rückseite.

The invention is explained in more detail below on the basis of preferred exemplary embodiments illustrated in the drawing, to which, however, it should not be limited. The drawing shows in detail:

Figure 1 shows a cross section of a multi-strand wire rope in the area of a long splice connection, with partially shown rollers for introducing support strands.

FIG. 2 shows a perspective front view of a device for inserting support strands in the long splice area of a multi-strand wire rope; FIG. and

Fig. 3 is a perspective view of the device of FIG. 2 from the back.

1 shows a wire rope 1 with six strands 2, which in turn is also composed of several strands 3 are. The cross section shown in Fig. 1 shows the area of a Long splice connection, in which instead of a central insert or core of the wire rope 1 an insertion strand 4 of a to be connected Wire rope or section is provided. The insert strands 4 is with a polyamide rope 5 to achieve a stable Wrapped in sheathing.

For the simultaneous insertion of three support strands 6 three rolls 7 are shown, each with two adjacent wire rope strands 2 push apart and thus a free space for insertion the respective support strand 6 between two strands 2 create. The only partially and shown in an axial section Rollers 3 each have a narrow end region 8 in which a groove 9 is provided for receiving the support strand 6 is. Starting from the narrow end area 8 are on both sides concave cross-sectional enlargements 10 - preferably in Circular arc shape with a radius approximately equal to that of the strands 2 - provided, resulting in an adaptation to the cylindrical Shape of the strands 2 and thus a space-saving recording of Wire rope strands 2 in the rolls 7 results. The forehead area 8 protrudes as far from Fig. 1 in the working position the wrapped stranded wire 4 that just space for the Support wire 6 remains.

In Fig. 1, a six-strand wire rope 1 is shown, wherein three support strands 6 already used in a first operation were and in a second operation on the roles 7 the additional support strands 6 are introduced, so that between each two adjacent wire rope strands 2 each have a support strand 6 is arranged. This leaves a space 11 between each two adjacent support strands 6 (which after springing back the strands are still enlarged), and rub the support strands 6 consequently not against each other, increasing the life of the wire rope is increased. In addition, the braids 6 result in a uniform distance between the strands 2, and the compressive stresses at the crossing points of the strands 2 (splice knot not shown) are reduced. This also reduces the development of wire breaks and thus increases the life of the wire rope 1.

2 and 3 is a device 12 for introducing Support strands 6 in a wire rope 1 in the area of a long splice connection shown. The device 12 has a split Support ring 13 on a hinge 14 for inserting the Wire rope 1 can be opened; can via a closure 15 the two parts of the support ring 13 are connected to one another.

The rollers 7 are in U-shaped or fork-shaped receiving devices 16 rotatably mounted on a perpendicular to the Axis 1 'of the wire rope 1 arranged spindle drive 17 attached are. The position of the Rollers 7 can be set in the radial direction of the support ring 13. In addition, the spindle drive 17 is accommodated in a housing 19, whereby the rollers 7 with their axes of rotation in adjustment the lay angle of the strands 2 of the wire rope 1 can be adjusted can.

The polyamide support strands 6 to be inserted are on supply spools 20 wound up, one supply spool 20 each Role 7 is assigned. The wound on the supply spools 20 Support strands 6 are inserted into the groove 9 via two guides 10 out of the roller 7 and introduced into the strand gap via this groove 9. To the tension of the support strands 6 between the supply spool 20 and the role 7 to be able to determine Supply spools 20 by means of a supply spool 10 from the outside acting spiral spring 21 braked. The braking force of the springs 21 can be set using nuts 22, for example. Of course, other means for Applying pressure - and thus for braking the supply spools 20 - may be provided as spiral springs 21, such as a stiff one Storage.

When the support strands 6 are inserted between two adjacent ones Wire rope strands 2, with the help of the rollers 7 adjacent strands 2 are pressed apart, one takes place Longitudinal displacement of the entire device 12 according to FIGS. 2 and 3 along the wire rope 1. The entire device 12 becomes Insert the support strands 6 manually moved forward and at the same time following the spirally wound wire rope strands 2 the rope circumference rotated. The device 12 is also a Support 23, which is a sleeve 24 encompassing the wire rope 1 has, secured to the wire rope 1.

Claims (18)

Wire rope (1) with several strands (2), at least one long splice connection being provided, characterized in that at least one support strand (6) is provided in the area of the long splice connection at least between two adjacent strands (2). Wire rope according to Claim 1, characterized in that at least one support strand (6) is provided between all of the stranded wires (2) surrounding a central insert in the region of the long splice connection. Wire rope according to claim 1, characterized in that a rope made of plastic, preferably polyamide, is provided as the support strand (6). Method for inserting at least one support strand (6) in a multi-strand wire rope (1), characterized in that in the region of a long splice connection at least two strands (2) surrounding an insert strand (4) are pressed apart, and the support strand (6) between them pressed strands (2) is inserted. A method according to claim 4, characterized in that several support strands (6) are used at the same time. A method according to claim 5, characterized in that half of the total number of support strands (6) is used at the same time. Device for inserting at least one support strand (6) in a multi-strand wire rope (1), characterized in that at least one rotatably mounted roller (7) is provided for pushing apart adjacent wire rope strands (2) in the region of a long splice connection between which the support strand (6) is used, the roller (7) for guiding the support strand (6) to be introduced having a groove (9). Apparatus according to claim 7, characterized in that the number of rollers (7) corresponds to the number of support strands (6) to be inserted at the same time. Apparatus according to claim 7 or 8, characterized in that the or each roller (7), starting from a narrow end region (8) containing the central groove (9), widens on both sides thereof in accordance with a concave profile (10). Device according to one of claims 7 to 9, characterized in that the or each roller (7) is mounted in a plane arranged perpendicular to the axis (1 ') of the wire rope (1). Device according to one of claims 7 to 9, characterized in that the or each roller (7) is mounted in a U-shaped receiving device (16) which is attached to a threaded spindle (17). Device according to one of Claims 7 to 11, characterized in that the orientation of the axis of rotation of the or each roller (7) can be adjusted relative to the rope axis (1 ') in order to adapt to the lay angle of the wire rope (1). Device according to one of claims 7 to 11, characterized in that a plurality of rollers (7), viewed in the axial direction of the wire rope (1), are arranged uniformly around the wire rope (1) in the circumferential direction. Device according to one of claims 7 to 13, characterized in that the rollers (7) are arranged on a support ring (13). Device according to claim 14, characterized in that the support ring (13) is divided and can be closed via a hinge connection (14). Device according to claim 14 or 15, characterized in that, on the support ring (13) corresponding to the number of rollers (7), supply spools (20) are rotatably mounted, on which the support strands (6) to be introduced are wound. Device according to claim 16, characterized in that an adjustable brake (21, 22) is assigned to the supply spools (20). Device according to one of claims 7 to 17, characterized by a support (23) for securing the device (12) on the wire rope (1).

Images