EP1040070A2

EP1040070A2 - Textile rope with splice joint and method for producing said splice joint

Info

Publication number: EP1040070A2
Application number: EP99936165A
Authority: EP
Inventors: Adolf Schwendinger
Original assignee: Teufelberger GmbH
Current assignee: Teufelberger GmbH
Priority date: 1998-07-21
Filing date: 1999-07-20
Publication date: 2000-10-04
Also published as: WO2000005162A3; WO2000005162A2; AT3431U1

Abstract

The invention relates to a textile rope (1, 15) whose surface (3) is formed by a tubular braiding (2) consisting of a plurality of strands and which presents a splice joint (5). At the point of splicing, the end section (8) of the one rope end (6) is inserted into the other rope end (7) and the end section (9) of the other rope end (7) is inserted into the one rope end (6). The end sections (8, 9) are each divided into several strands (10, 11) each of which protrudes slightly through the braiding (2) which forms the surface (3) of the rope (1, 15) and is thus held in the braiding (2). The points of protrusion (12) of said strands (10, 11) are situated at a mutual distance (13) from each other, as viewed in the longitudinal direction (14) of the rope. To produce such a rope (1, 15) first the end section of the corresponding other rope end is inserted into the two rope ends (6, 7), after which the individual strands (10, 11) of said end sections (8, 9) are grasped through the braiding (2), separated from the adjacent strands and pulled outwards out of the braiding (2).

Description

Textile rope with a splice connection and method for producing the splice connection

The invention relates to a textile rope, the surface of which is formed by a tubular braid consisting of a plurality of strands, and in which there is a splice connection, preferably machine rope provided for running, in particular paper machine threading rope, the two rope ends joined there at the splice point are stuck. The invention further relates to a method for producing the splice connection of such a rope.

Ropes of the aforementioned type can be braided hollow ropes made of textile fiber material, in particular yarns, or also core ropes, in which a core formed from textile fiber strands is surrounded by a sheath which is formed as a tubular braid which consists of a plurality of strands made of textile material . Such ropes are widely used, for example, as ropes in paper machines. The so-called splice connection is often used. Plug-in splice is provided, which is formed by inserting the end sections of the two rope ends into the opposite or complementary rope end, whereby as soon as the rope is under tensile stress, a contraction of the hose-like braid, which forms the surface of the rope, causes it to jam the end sections of the rope ends inserted into the respective complementary rope ends (see, for example, US 3,561,318 A). However, these known splice connections have the disadvantage that the rope has a substantially greater thickness over the entire length of these connections than is present outside the splice connection in the rope concerned; In the case of a hollow rope, for example, the thickness in the area of the splice connection over its entire length can be 130% greater than the thickness of the rope outside the splice connection, and the thickening in the area of the splice connection which occurs due to such a splice connection can also be considerable in the case of core ropes , for example about 80%. Such thickenings, which exist in the known cases mentioned over the entire length of a splice connection, work unfavorable for running ropes, because the dimensions of the rope guides, in particular rope pulleys with a groove, have to be matched to the rope diameter outside the splice connection, and this causes damage to the splice connections when passing through the guide devices, which reduces the service life.

A number of structurally different connections for rope ends are also known, which are often counted among the spliced connections in the professional usage. It is known to connect the cable ends of steel cables to one another by inserting these cable ends into a sleeve from both sides and e.g. fixed by casting or pressing (see e.g. WO 93/18997 A). DE 40 38 982 A1 describes a technique for connecting yarn strands in which the ends of yarn strands which are to be connected to one another are held next to one another and the fibers of these fiber strands are entangled by inserting needles. DE 34 00 233 AI describes a technique in which to form a "splice connection" of yarns, the yarn ends to be connected to one another in the pressure channel of a splice chamber are exposed to the swirling effect of compressed air, the fibers of the yarn ends being whirled through and a yarn connection being formed. It is also known in the case of steel cables to connect two cable ends to one another in such a way that one strand of one end of the cable is connected to one strand of the other end of the cable and the connecting points of the pairs of strands are offset from one another in the longitudinal direction of the cable (cf. ).

It is an object of the invention to provide a textile rope of the type mentioned at the beginning, in which the thickening caused by the splice connection is significantly less and considerably shorter than in the case of known ropes of the type mentioned at the outset, the splice connection having good durability, a high tensile force transmission capacity and one should have a simple structure and should also be easy to manufacture.

The rope of the type mentioned in the introduction is characterized in that the end section of the other rope end inserted into one rope end and the end section of one rope end inserted into the other rope end each several strands are subdivided, each of these strands protruding somewhat outwards through the braid forming the surface of the rope and thus being held in the braid, and the points of passage of these strands following one another at a mutual spacing, seen in the longitudinal direction of the rope. With this training, the above-mentioned objective can be met well. The fact that the strands, which each form an end section of a rope end and are inserted into the other rope end, pass through the braid forming the rope surface to the outside, in addition to the clamping encirclement of the end sections by this braid, a very good and stable anchoring of these end sections achieved in this network, which has a positive effect both in terms of the transmission of tractive force and in terms of behavior during load changes. The outwardly projecting short ends of the strands mentioned, because they are made of textile fibers, easily lie against the surface of the rope and do not appear disadvantageously even when such a rope is run over guides. Since the points at which the said strands emerge through the hose-like meshwork, seen in the longitudinal direction of the rope, follow one another at a mutual spacing, the cross section of the entirety of these strands, which each form an end section of a rope end, takes away from the center of the splice , at which the two end sections of the rope ends are inserted into the opposite opposite end of the rope, so that these end sections experience a taper away from the center of the splice and accordingly the thickening of the rope resulting from the splice connection is minimized.

The above-mentioned tapering or thinning of the end sections of the rope ends inserted into the respective opposite rope end, away from the center of the splice, can be carried out by a corresponding tapering or thinning of the rope core and, as with the strands of the mentioned end sections, when a core rope is present Exit of the fiber strands forming the rope core from the braid forming the rope surface, which forms the sheath for a core rope, are supplemented. A preferred embodiment of the subject matter of the invention is characterized in that that the rope has a rope core formed from fiber strands and the ends of these fiber strands forming the rope core at the splice point at a distance from the center of the splice, at which the two end sections of the rope ends are inserted into the opposite end of the rope, through which the surface of the rope protruding braid protrude slightly outwards and are thus held in the braid. It is advantageous here if the ends of the fiber strands forming the rope core protrude from the braid forming the surface of the rope at a plurality of successive passage points, seen at a mutual distance in the longitudinal direction of the rope. It is particularly advantageous if the passage points of the ends of the fiber strands forming the rope core, seen in the longitudinal direction of the rope, lie in that area of the relevant rope end in which the strands forming the tubular braid of the rope surface of the complementary rope end also project outwards . In this way, a particularly uniform course of the rope thickness in the area of the splice connection and also a particularly uniform transition of the tensile load to the rope core can be achieved. The area in which both ends of the fiber strands forming the rope core of the respective rope end as well as strands which form the tubular braid of the complementary rope end project outwards in a rope end can advantageously, viewed in the longitudinal direction of the rope, have a length of 1 cm to Have 80 cm.

In practice, it has proven to be advantageous to provide the design according to the invention for ropes with a diameter in the range from 0.5 to 2.5 cm.

With regard to the extent to which, as discussed above, the strands forming the end sections of the rope ends and the possibly present fiber strands forming the rope core, from which the surface of the relevant rope end protruding, a length of these ends of 0.5 to 10 cm is advantageous .

The mutual distances between the passage points of the mentioned strands forming the end sections of the rope ends and the possibly existing fiber strands forming the rope core through the tubular braid forming the rope surface are advantageously selected in the range from 1 to 20 cm, in Seen longitudinal direction of the rope.

The method according to the invention for producing the splice connection of a rope designed as mentioned above is characterized in that first of all the end section of the complementary rope end is inserted into the two rope ends at a point later forming the center of the splice connection to be made, and then the individual strands of these end sections are inserted through the hose-like braid of the relevant rope end is grasped and detached from the accompanying strands and, viewed in the longitudinal direction of the rope, spaced-apart passage openings are pulled out of the hose-like braid of the respective rope end, after which the portions of these strands protruding from these passage openings are shortened. This procedure enables a splice connection, as discussed above, to be obtained in a relatively simple manner and without the need for complex devices, which ensures advantageous properties of the rope provided with it. To facilitate the individual work steps, it can advantageously be provided that the end sections of the rope ends, when inserted into the other rope end, are advanced to a point located in the area of the limits of the splice connection to be made, and there a piece from which the surface of the respective other End of the rope. If the splice connection is formed in the case of a core rope, it is advantageously additionally provided that the ends of the fiber strands forming the core of the rope ends are pulled out of the interior of the rope at a point at a distance from the center of the splice connection to be formed, and then the end sections of the rope ends are inserted into the other end of the rope, after which the strands forming the end sections and the fiber strands forming the rope core are gripped, released and pulled out.

The invention will now be further explained by means of examples with reference to the drawing. The drawing shows:

Fig.l the area with the splice connection of an embodiment of a hollow rope designed according to the invention in a schematic view; FIG. 2 likewise shows a schematic view of the area of the embodiment of an inventive core rope that has the splice connection; 3 to 8 in a schematic representation individual phases of the production of the splice connection in the case of a hollow rope designed according to the invention; and FIGS. 9 to 15 show a schematic illustration of individual phases in the production of the splice connection in the case of a core rope designed according to the invention.

The textile rope 1 shown in Fig.l is a hollow rope, which is formed from a tubular braid 2, which also forms the surface 3 of this rope. In the interest of a clear representation of various details, this network 2 is only indicated in places in the drawing figures. A splice connection 5 is present in the rope 1 between the boundaries 4 indicated by dash-dotted lines. For this purpose, the two rope ends 6, 7 joined there are inserted into one another by inserting the end section 9 of the other right rope end 7 into the left rope end 6 in FIG. 1 and the end section 8 into the other right rope end 7 one of the left rope ends 6 is inserted. The end section 8 is divided into a plurality of strands 10 and the end section 9 into a plurality of strands 11; each of these strands 10, 11 protrudes somewhat through the braid 2 forming the surface of the rope 1, and is thus held in the braid 2. The passage points 12 of these strands 10, 11 follow one another at a mutual spacing 13, seen in the longitudinal direction 14 of the rope 1. The strands 10, 11 protrude a short distance, e.g. 0.5 to 10 cm, out of braid 2. The mutual distances 13 of the passage points 12 are selected in the range from 1 cm to 20 cm.

The rope 15 shown in FIG. 2 is a textile core rope, in which the tubular braid 2 forms the rope sheath that surrounds a rope core 16. The splice connection 5 extending between the boundaries 4 also connects the cable ends 6, 7 to one another in this case, the end sections 8, 9 of the cable ends 6, 7 being inserted into the respective opposite cable end in the middle 18 of the splice. The rope core 16 is formed from fiber strands 17 which are spaced 19 from the center 18 of the splice by the structure forming the surface 3 of the rope. braid 2 protrude slightly outwards and are thus held in braid 2. The passage points 20 of the fiber strands 17 are arranged in the longitudinal direction 14 of the rope 15 at mutual distances 21 of approximately 1 to 20 cm.

Analogous to the rope 1 shown in FIG. 1, the end sections 8, 9, which are inserted into the middle 18 of the splice in the opposite rope end, are also at the rope ends 6 and 7 in the rope 15 shown in FIG the strands of braid 2 formed. The strands 10, 11 of the end sections 8, 9 protrude somewhat outwards through the braid 2, the passages 12 of these strands 10, 11 following one another at a mutual spacing 13 in the longitudinal direction 14 of the rope 15. The distance 13 is also advantageously selected in the range from 1 to 20 cm. The strands 10, 11 protrude approximately 0.5 to 10 cm from the braid 2 forming the rope surface.

There are the passage points 20 of the fiber strands 17, seen in the longitudinal direction of the rope, in that area 22 of the relevant rope end 6 or 7, in which the strands 10 or 11 also project outwards. In the case shown in FIG. 2, the passage points 20 are provided only in a part of the area 22, namely in the area 23, in which both ends of the fiber strands 17 and ends of the strands 10 and 11 protrude outwards. The partial area 23, as seen in the longitudinal direction of the rope 15, can have a length of up to 80 cm. In the areas 22, the successive passage of the strands 10 and 11 through the braid 2 from the center 18 reduces the overall cross section of the end sections 8 and 9 consisting of the strands 10 and 11, while in opposite directions in the areas 23 of the total cross-section present in the rope 15 of the core 16 formed from the fiber strands 17 increases as seen from the center 18. This is advantageous for keeping the rope diameter constant and also for power transmission in the area of the splice connection.

To produce the splice connection of a rope, as shown in FIG. 1, as shown in FIG. 3, the middle 18 can first be attached to the two rope ends 6, 7 to be connected, which consist of a textile, tubular braid the splice connection to be made and the size Mark zen 4 of the splice connection to be made and then insert the end section 9 of the rope end 7, as shown in FIG. 4, by means of a needle 24 next to the location of the center 18 into the rope end 6, up to the limit 4 at this rope end, and there again Pull out of the rope end until the markings of the middle 18 previously attached to the rope ends 6, 7 almost coincide, as shown in FIG. 5. Subsequently, as shown in FIG. 6, the end section 8 of the rope end 6 near the marking of the middle 18 can be inserted into the rope end 7 again with the aid of a needle 24 and pulled out again at the marking of the boundary 4, so that this is shown in FIG .7 structures shown is preserved. Then one detects the strands 11 and 10 located in the interior of the rope ends 6 and 7, from which the end sections 9 and 8 of the rope ends 7 and 6 are formed, through the tubular braid forming the rope ends 6 and 7 one by one, detaches them from them accompanying strands of the end sections 8 and 9 and pulls them through this braid 2 to the outside, the passage points 12 of the strands 10, 11 being selected such that they are at a distance 13 from one another as viewed in the longitudinal direction 14. This results in the structure shown in FIG. 8, from which, by correspondingly shortening the strands 11, 10 protruding from the rope ends 6, 7, the rope 1 provided with a splice connection, as shown in FIG. 1, is obtained. To produce the splice connection of a core rope, as shown in FIG. 2, it is possible, as shown in FIG. 9, to first mark the center 18 of the splice connection to be formed and its boundaries 4 on the two rope ends 6, 7 to be connected to one another and further also the limit 25 up to which the cable core 16 should extend into the splice connection. Thereupon, while the relevant cable end 6 (or 7) is held, as shown in FIG. 10 below, the cable core 16 is pulled out of the two cable ends 6, 7 and the protruding part of the cable core 16 is cut, as shown in FIG. 10 above shows up to a length of about 10 cm. Once this has been done, a needle 24 can be used to insert the end section 9 at the marking of the center 18 into the rope end 6, as shown in FIG. 11. At the point where the boundary 4 is marked, the end section 9 is then pulled out of the rope end 6 until, as shown in FIG. 12, the ends of the rope 6, 7 meet the sensitive markings of the middle 18 of the splice connection to be made. Thereafter, as shown in FIG. 13, the end section 8 of the rope end 6 is inserted into the rope end 7 at a point located at the marking of the center 18 with the aid of a needle 24 and is pulled out again at the marking of the boundary 4, so that in FIG .14 structures shown is preserved. Thereafter, the strands 10, 11 forming the end sections 8, 9 of the rope ends 6, 7 are grasped through the tubular braid 2 forming the surface 3 of the rope 15 or the sheath thereof and by the strands accompanying them in these end sections 8, 9 loosened and pulled out of the braid 2 at passage points 12 spaced 13 apart. In an analogous manner, the fiber strands 17 forming the cable core 16 are gripped through the braid 2, detached from the fiber strands accompanying them and pulled out of the braid 2 at passage points 20, these passage points 20 being at a distance 19 from the center 18 of the splice connection to be produced and analogously as the passage points 12 are selected at a distance 21 from one another. The passage points 20 lie in an area 23, which in turn lies within the area 22 in which the passage points 12 are located. A structure is created in this way, as shown in FIG. 15. A rope 15, as shown in FIG. 2, is obtained from this structure by shortening the parts of the strands 10, 11 and the fiber strands 17 protruding from the braid 2.

Claims

Claims:

1. Textile rope (1, 15), the surface (3) of which is formed by a tubular braid (2) consisting of a plurality of strands and in which there is a splice connection (5), the two rope ends joined there at the splice point ( 6, 7) are inserted into one another, characterized in that the end section (9) of the other rope end (7) inserted into the one rope end (6) and the end section (8) of the one rope end (6) inserted into the other rope end (7) ) are each divided into several strands (10, 11), each of these strands (10, 11) projecting somewhat outwards through the braid (2) forming the surface (3) of the rope (1, 15) and thus in the braid ( 2) is held and the passage points (12) of these strands (10, 11) at a mutual distance (13), seen in the longitudinal direction (14) of the rope, follow one another.

2. Textile rope according to claim 1, characterized in that the rope has a diameter in the range of 0.5 to 2.5 cm.

3. Textile rope according to claim 1 or 2, characterized in that the rope (15) has a rope core (16) formed from fiber strands (17) and the ends of these fiber strands (17) forming the rope core at the splice at a distance

(19) from the middle (18) of the splice, at which the two end sections (8, 9) of the rope ends (6, 7) are inserted into the opposite rope end, through the braid (2) forming the surface of the rope protrude outside and are thus held in the braid.

4. Textile rope according to claim 3, characterized in that the ends of the rope core (16) forming fiber strands (17) at several at a mutual distance (21), seen in the longitudinal direction of the rope, successive passage points (20) from which the surface of the Rope forming braid (2) protrude.

5. Textile rope according to claim 4, characterized in that the passage points (20) of the ends of the fiber strands (17) forming the rope core (17), seen in the longitudinal direction of the rope, lie in that area (22) of the relevant rope end (6, 7) in which the strands (10, 11) forming the tubular braid (2) of the rope surface of the complementary rope end (7, 6) also project outwards.

6. Textile rope according to one of the preceding claims, characterized in that the strands (10, 11) which form the end sections (8, 9) of the complementary rope end inserted into the rope ends (6, 7) form 0.5 to 10 cm protrude from the braid (2) forming the rope surface.

7. Textile rope according to one of claims 3 to 5, characterized in that the fiber core forming the rope core (16)

(17) protrude 0.5 to 10 cm from the braid (2) forming the surface of the relevant rope end.

8. Textile rope according to one of the preceding claims, characterized in that the passage points (12) of the strands (10, 11) inserted into the hose-like braid (2) of a rope end (6, 7) and projecting through this braid to the outside, which also form the tubular braid of the complementary rope end (7, 6), viewed in the longitudinal direction of the rope, are arranged at mutual distances (13) of 1 to 20 cm.

9. Textile rope according to claim 4 or 5, characterized in that the passage points (20) of the rope core (16) forming fiber strands (17), seen in the longitudinal direction of the rope, are arranged at mutual distances (21) from 1 to 20 cm .

10. Textile rope according to claim 5, characterized in that the area (23) in which in a rope end (6, 7) both ends of the rope core (16) of the relevant rope end (6, 7) forming fiber strands (17) as strands (10, 11), which form the tubular braid (2) of the complementary rope end (7, 6), project outwards, viewed in the longitudinal direction of the rope, and have a length of 1 to 80 cm.

11. Use of a textile rope according to one of claims 1 up to 10 as a machine rope intended for running.

12. Use of a textile rope according to one of claims 1 to 10 as a paper machine rope.

13. The method for producing the splice connection of a rope according to claim 1, characterized in that first the end section of the complementary rope end is inserted into the two rope ends at a point later forming the center of the splice connection that subsequently the individual strands of these end sections are inserted through the tube-like braid of the rope end in question is grasped and detached from the accompanying strands and, at a distance from one another in the longitudinal direction of the rope, pulled out from the tube-like mesh of the rope end concerned, spaced apart from each other, after which the portions of these strands projecting from these passage points are shortened.

14. The method according to claim 13, characterized in that the end portions of the rope ends when inserted into the other rope end to a point in the region of the limits of the splice connection to be made, and there a piece of which forms the surface of the respective other rope end Braid can be pulled out.

15. The method according to claim 13 for producing a splice connection of a rope according to claims 1 and 3, characterized in that first of all the ends of the fiber strands forming the core of the rope ends are pulled out of the rope interior at a point located at a distance from the center of the splice connection to be formed that the end sections of the rope ends are then inserted into the other end of the rope, after which the strands forming the end sections and the fiber strands forming the rope core are grasped, released and pulled out.