DE19708029C1 - Method for producing draw-proof connection on wire rope - Google Patents

Abstract

The tubular casing has a through passage hole (12) matched to the outer diameter (D1) of the wire cable (10). At least a part of the through-hole is pushed over the end (13) of the cable (10). The tubular casing (11), at least in the section which is pushed over the cable end (13), is reduced by plastic deformation in the outer diameter (D2) around the rotation-symmetrical casing axis and at the same time is pressed together with the wire rope end (13). The tubular casing, at the same time as or after its fixture to the wire rope end, is provided in the reduced area with connectors (14), which make possible a releasable connection between the connector and a fixture.

Description

TECHNICAL AREA

The present invention relates to the field of loading fastening technology for wire ropes. It concerns a procedure for establishing a tensile connection on a wire rope according to the features in the preamble of claim 1.

STATE OF THE ART

Stainless steel wire ropes are not only in the classic areas of lifting technology, boat technology or generally used as guying, but also find increasingly in the field of architecture, e.g. B. in construction of railings or as a greening aid on building facades. The wire ropes not only have to be securely attached to them provided attachment points are attached, but the fastening technology must also have increased aesthetic appeal do justice to sayings.

For the secure and tensile detachable fastening of wire rope ends at certain attachment points have ver different methods have been tried, in which the rope end first permanently connected to a suitable connector  and that connection part is then attached to the attachment point screwed or otherwise releasably attached. Far ver it is wide (see the catalog "Inox Line" 1996 of the Applicant) to use connectors that have a thread bolt, a forged fork, an eyelet or the like sen, at one end of a sleeve-like receiving part is formed. A rope is inserted into the blind hole of the sleeve part end of the wire rope inserted and permanent in the sleeve part attached. This can be done by brazing or gluing ben can be achieved, or by the fact that the sleeve part by a plastic deformation with the inserted rope end is pressed. The pressing can take place in that the sleeve part using a special tool (pliers) is indented locally in certain areas (cross-pressing).

Another technique that has been known for a long time is that of Sleeve part by round hammers or round kneading in diameter to reduce evenly and rotationally symmetrically and so the wall of the sleeve part on the entire inner surface with the To connect the rope end intimately (see Klaus Feyrer, wire ropes, Springer-Verlag, 1994, pp. 322-326). The advantage of the latter Above all, the method mentioned is that the ge Entire inner surface of the sleeve for the frictional connection between the rope and Sleeve is used and so very high breaking forces are achieved can be. The reduction of the outside diameter can also be used advantageously to be very slim to reach fastening connections at the rope ends (see also European patent EP 0 619 443 B1).

The use of such connection parts with sleeve-like However, the approach also has several disadvantages: On the one hand, lie conditions for a connecting part, which a threaded bolt with Has external thread, sleeve part and threaded bolt in ach direction of the connecting part in succession. As for the Sleeve part not less than a certain minimum length can be and the lengths of the sleeve part and thread  Add bolts, the overall result is comparatively long connector, which for certain applications only partially meets aesthetic requirements. To start which is usually used in connection parts of this type a workpiece made of solid material, in which through a series of cutting and non-cutting processes the thread or fork or eyelet testifies and by making a blind hole the sleeve part is made. This type of manufacture is not only elaborate, but also makes it necessary for each rope end connection the associated connector beforehand specifically to make and if necessary to keep in stock.

PRESENTATION OF THE INVENTION

It is therefore an object of the invention to produce a method provision of a tensile connection on a wire rope Attach a connector to a wire rope end which is very easy to do and with takes just a few steps, flexible to different ways can be adapted to use cases, the storage significantly simplified and characterized by significantly reduced costs draws.

The task is in a method of the aforementioned Art solved in that a tubular Sleeve is used, which is the outer diameter of the Has wire rope adapted through hole, and to at least with a section of the through hole One end of the wire rope is pushed that the pipe shaped sleeve at least in the section with which it is pushed over the end of the rope, by one around the sleeve rotational axisymmetric plastic deformation in the Outside diameter reduced and at the same time with the wire rope end is pressed, and that the tubular sleeve  simultaneously with or after their attachment to the Wire rope end in the reduced diameter area with connector is provided with a detachable connection between the connector and a fastener he arbor. The advantage of the solution according to the invention is in that for the connection simple sleeve parts without further preprocessing can be used that the Flexible connection to a wide variety of applications can be adjusted and that at the same time a compact, aesthetically pleasing and mechanically highly resilient ver bond results.

A first preferred embodiment of the invention The process is characterized in that the sleeve with the full length of the through hole over the rope end It is necessary that the connecting means comprise an external thread sen, which is introduced into the pressed sleeve, and that the sleeve is pushed so far over the end of the rope that the sleeve ends at one end with the rope end. This ensures that the sleeve over the entire Length is crimped with the rope, without being for the outside wind an additional length of the component can be provided must, so that there is an extremely short rope end connection overall result.

According to a particularly preferred development of this Aus the outer diameter of the sleeve is chosen and is used for plastic deformation on the wire rope so far reduced in the outer diameter that the reduced Outside diameter approximately equal to or less than that Outside diameter of the wire rope is. So you get one Rope end connection, which is not only very short, but in Diameter also does not protrude beyond the rope, so that a hole for the cable connection is not larger must be as necessary according to the rope diameter anyway is.  

This embodiment of the is particularly simple Procedure if the external thread simultaneously with the Redu adornment of the outside diameter by plastic deformation in the sleeve is inserted.

Another preferred embodiment of the method according to the invention is characterized in that the sleeve so that the wire rope is pushed far over the end of the rope protrudes from both sides of the sleeve and that the sleeve is in their outer diameter selected and the plastic Deform on the wire rope until the outer diameter is reduced it is adorned that the reduced outside diameter is larger than is the outside diameter of the wire rope. This leaves realize a rope connection in a simple way which carried out a screwing in the middle of the rope can be.

Another preferred embodiment of the invention draws is characterized in that the sleeve with only one section their through hole ge over the rope end of the wire rope is pushed, and that the remaining section to the on bring the lanyard is used. Hereby read others can be very flexible and with little effort Realize connection types as an external thread.

This can happen in particular in that in the ver remaining section in the through bore of the sleeve an internal thread is inserted, or that in the lead section into the through hole of the sleeve Connector is inserted and pressed with the sleeve, or that in the remaining section of the sleeve Sleeve pressed into a flat connection tab and in the loading Provide a fastening hole for the connecting bracket becomes.  

Further embodiments of the invention result from the dependent subclaims.

BRIEF EXPLANATION OF THE FIGURES

In the following, the invention is intended to be based on exemplary embodiments len are explained in connection with the drawing. Show it

Fig. 1a-d different steps in the production of a short, thin rope end connection with off thread according to a first preferred embodiment of the invention;

FIG. 2a-d th different steps in the manufacture of egg ner short, thicker cable end with an external thread according to a second Favor embodiment of the invention;

Fig. 3a-d different steps in the production of egg ner rope end connection with an internal thread according to a third preferred embodiment of the invention;

Fig. 4a-d different steps in the production of a ner rope intermediate connection with an external thread according to a fourth preferred embodiment of the invention;

Fig. 5a-c different steps in the production of egg ner rope end connection with additional connection part according to a fifth preferred embodiment of the invention; and

Fig. 6a-d different steps in the production of egg ner rope end connection with mounting hole according to a sixth preferred embodiment of the invention.

WAYS OF CARRYING OUT THE INVENTION

In Fig. 1a-d different steps in the manufacture of a short, thin rope end connection with an external thread ge according to a first preferred embodiment of the inven tion are shown. In Fig. 1a, the end portion of a wire rope 10 is shown with the outer diameter D1. The wire rope 10 is preferably made of a stainless steel. On the rope end 10 of the wire rope 10 , a tubular, cylindrical sleeve 11 is pushed, which has a (concentric) through hole 12 , the inner diameter of which is adapted to the outer diameter D1 of the wire rope, that is to say somewhat or significantly larger than the outer diameter D1 of the wire rope 10 . The sleeve 11 has an outer diameter D2 and is preferably also made of a stainless steel, which can be sufficiently deformed.

Referring to FIG. 1b, the sleeve 11 - after the end of the rope 13 in a known manner of fat and has been the like cleaned -. Slid with their full length on the cable end 13, so that the rear end of the sleeve 11 with the cable end 13 terminates or escapes. The rope end 13 provided with the pushed-on sleeve 11 is then subjected to a round kneading or round hammering process in which the outer diameter D2 of the sleeve 11 is reduced by uniform rotationally symmetrical plastic deformation to such an extent that the reduced outer diameter is approximately equal to or less than the outer diameter D1 of the wire rope 10 is (indicated in FIG. 1c by the arrows). Due to the plastic deformation of the sleeve 11 , the rope end 13 is compacted and an intimate full-surface connection between the inner wall of the sleeve 11 and the rope end is achieved. The original wall thickness of the sleeve 11 is chosen so that after the reduction in the outer diameter (D2) of the sleeve 11 there is still sufficient wall thickness to apply a standardized external thread ( 14 in FIG. 1d) to the reduced-diameter sleeve 11 . Basically, the outside thread 14 can be molded or cut into the pressed-on sleeve 11 in a separate step ( FIG. 1d). However, it is particularly simple and cost-effective if the external thread 14 is introduced into the sleeve 11 by plastic deformation at the same time as the reduction in the external diameter D2. The finished rope end connection is characterized by the fact that it is extremely slim and short and therefore aesthetically very appealing, and is pressed with the rope over the entire length of the connection (the sleeve 11 ), so that despite the short design there is a high breaking strength results.

However, the method according to the invention not only brings significant simplifications in the production of short and slim cable end connections, as shown in FIG. 1, but also in cable end connections in which the external thread on the sleeve has a significantly larger external diameter than the wire cable. Fig. 1 corre sponding steps in the preparation of such a connection are shown in Fig. 2a-d. On the wire rope 20 with the rope end 23 , a sleeve 21 is pushed here, which, like the sleeve 11 from FIG. 1, is cylindrical and tubular and has a concentric through bore 22 , but has a significantly larger outside diameter ( FIG. 2a ). The sleeve 21 is pushed onto the rope end 23 in the same way until the rear end is aligned with the rope end 23 ( FIG. 2b) and then reduced by kneading or hammering through plastic deformation in the outside diameter over the entire sleeve length ( FIG. 2c ). Simultaneously with the reduction in the outer diameter or subsequently, an external thread 24 is applied to the sleeve 24 , the diameter of which is not limited by the outer diameter of the wire rope 20 , but extends beyond it. It should be noted at this point that it is expedient not to form the external thread 24 (as also 14 in FIG. 1) over the entire length of the sleeve 21 (or 11 ), but on a thread-free section of the sleeve 21 (or . 11 ) Form lugs or a hexagon, which can be attached and countered with a screwdriver when screwing the cable end connection. These approaches or this hexagon can advantageously be generated by hammering.

A modification of the exemplary embodiment shown in FIG. 2 is shown in FIG. 4: Here the sleeve 41 with the through hole 42 is pushed over the rope end 43 of the wire rope 40 so that the wire rope 40 protrudes from the sleeve 41 on both sides ( FIG . 4a, b). After reducing the outer diameter of the sleeve 41 by kneading or hammering ( FIG. 4c), a continuous external thread 44 is applied to the sleeve 41 ( FIG. 4d), by means of which the wire rope 40 can be screwed to a through hole or the like. It goes without saying that in this case the outside diameter of the external thread 44 is significantly larger than the outside diameter of the wire rope 40 so that the corresponding nuts can be pushed over the wire rope 40 .

Another possibility of the rope end connection according to the method according to the invention is shown in FIG. 3. For Drüber pushing over the cable 30 to the cable end 33 of a sleeve 31 (FIG. 3A) is used herein with through hole 32, which are longer than a total of the sleeves 11 and 21 of FIG. 1 or FIG. 2. In this case, the sleeve 31 is pushed over the rope end 33 of the wire rope 30 only with a partial section of its through hole 32 ( FIG. 3b). The remaining portion of the through bore 32 is then used to attach fasteners. In the present case, the connecting means comprise an internal thread 34 ( FIG. 3d), which is introduced into the remaining partial section of the sleeve 31 . If the sleeve 31 is reduced in diameter for round kneading or rotary hammers over the entire length, as indicated in FIG. 3c by the arrows, the internal thread 34 is subsequently introduced into the sleeve 31 . If, on the other hand, the sleeve 31 is deformed only in the area in which the cable end 33 is inserted, the internal thread 34 (differently than shown in FIG. 3) can also be introduced into the sleeve 31 beforehand.

Another type of connecting means, which can advantageously be attached to the remaining section of a sleeve 51 with through hole 52 not pushed fully onto the rope end 53 of a wire rope 50 , is shown in the exemplary embodiment of FIG. 5: In addition to the sleeve 51 , this is also shown in FIG If an eyelet-shaped connecting part 54 is used ( FIG. 5a), which is guided, for example, with a shaft 56 having a constriction 57 into the section of the through-hole 52 not occupied by the wire cable 50 ( FIG. 5b). during the subsequent round kneading or round hammering, the sleeve 51 is pressed simultaneously (or also one after the other) with the rope end 53 and the shaft 56 of the connecting part 54 ( FIG. 5c). By using the sleeve, this type of cable end connection can be designed very flexibly.

Another type of connection means are shown in the embodiment example of FIG. 6. Here too, a sleeve 61 is only pushed with a partial section of its through bore 62 over the rope end 63 of a wire rope 60 ( FIGS. 6a, b). The sleeve 61 is then pressed by kneading or round hammers with the rope end. The remaining Teilab section of the sleeve 61 is simultaneously hammered or subsequently to a connecting bracket 64 flat or -gedrückt (Fig. 6c), and the connecting bracket 64 is provided, finally, with a BEFE stigungsloch 65 (in Fig. 6d in the plan view Darge asserted). In this way it is very easy to create a tensile, aesthetically appealing cable end connection by means of a sleeve that can be sawn off from a tubular semi-finished product.

Overall, the invention results in a method for producing connections for wire ropes, which is distinguished by the following advantages:

• - easy to manufacture (by kneading or hammering a sleeve)
• - Flexible application for different types of fastening (Internal thread, external thread)
• - Simplified warehousing (tubular semifinished product with un different diameters)
• - only little complex and costly procedural steps like turning, drilling, milling
• - Manufacture of extremely compact and slim end connections possible.

Reference list

10th

,

20th

Wire rope

11

,

21

Sleeve (tubular)

12th

,

22

Through hole (sleeve)

13

,

23

Rope end

14

,

24th

External thread

30th

,

40

Wire rope

31

,

41

Sleeve

32

,

42

Through hole

33

,

43

Rope end

34

inner thread

44

External thread

50

,

60

Wire rope

51

,

61

Sleeve

52

,

62

Through hole

53

,

63

Rope end

54

Connector (Oese)

55

,

65

Mounting hole

56

shaft

57

Narrowing (shaft)

64

Connecting strap
D1 outer diameter (wire rope)
D2 outer diameter (sleeve)

Claims (16)

1. A method for producing a tensile connection on a wire rope ( 10 , 20 , 30 , 40 , 50 , 60 ) by attaching a connector to a wire rope end ( 13 , 23 , 33 , 43 , 53 , 63 ), wherein a tubular Sleeve ( 11 , 21 , 31 , 41 , 51 , 61 ) is used, which has a through hole ( 12 , 22 , 32 , 42 , adapted to the outside diameter (D1) of the wire rope ( 10 , 20 , 30 , 40 , 50 , 60 ) 52 , 62 ), and at least with a section of the through hole ( 12 , 22 , 32 , 42 , 52 , 62 ) via a rope end ( 13 , 23 , 33 , 43 , 53 , 63 ) of the wire rope ( 10 , 20 , 30 , 40 , 50 , 60 ), and wherein the tubular sleeve ( 11 , 21 , 31 , 41 , 51 , 61 ) at least in the section with which it over the wire rope end ( 13 , 23 , 33 , 43 , 53 , 63 ) is reduced by a rotationally symmetrical plastic deformation in the outer diameter (D2) around the sleeve axis and at the same time with the wire cables de ( 13 , 23 , 33 , 43 , 53 , 63 ) is pressed, characterized in that the tubular sleeve ( 11 , 21 , 31 , 41 , 51 , 61 ) simultaneously with or after it is fastened to the end of the wire rope ( 13 , 23 , 33 , 43 , 53 , 63 ) in the reduced diameter area with connecting means ( 14 ; 24 ; 34 ; 44 ; 54,. . ., 57 ; 64 , 65 ) is provided, which enable a releasable connection between the connector and a fastening means. 2. The method according to claim 1, characterized in that for the wire rope ( 10 , 20 , 30 , 40 , 50 , 60 ) and the tubular sleeve ( 11 , 21 , 31 , 41 , 51 , 61 ) stainless steel is used. 3. The method according to any one of claims 1 and 2, characterized in that a tubular sleeve ( 11 , 21 , 31 , 41 , 51 , 61 ) is used, which has a constant outer diameter (D2) and a constant inner diameter of the through hole ( 12 , 22 , 32 , 42 , 52 , 62 ). 4. The method according to any one of claims 1 to 3, characterized in that the tubular sleeve ( 11 , 21 , 41 ) with the full length of the through hole ( 12 , 22 , 42 ) is pushed over the rope end ( 13 , 23 , 43 ) , and that the connection means comprise an external thread ( 14 , 24 , 44 ) which is introduced into the pressed sleeve ( 11 , 21 , 41 ). 5. The method according to claim 4, characterized in that the tubular sleeve ( 11 , 21 ) is pushed so far over the rope end ( 13 , 23 ) that the sleeve ( 11 , 21 ) at one end with the rope end ( 13 , 23 ) concludes. 6. The method according to claim 5, characterized in that the tubular sleeve ( 11 ) is selected in its outer diameter (D2) and in plastic deformation on the wire rope ( 10 ) is reduced so far in the outer diameter that the reduced outer diameter is approximately equal to or less than the outer diameter (D1) of the wire rope ( 10 ). 7. The method according to claim 5, characterized in that the tubular sleeve ( 21 ) in its outer diameter (D2) is selected and during plastic deformation on the wire rope ( 20 ) is reduced so far in the outer diameter that the reduced outer diameter is larger than the outer diameter ( D1) of the wire rope ( 20 ). 8. The method according to any one of claims 4 to 7, characterized in that the external thread ( 14 , 24 , 44 ) is introduced simultaneously with the reduction in the external diameter (D2) by plastic deformation in the tubular sleeve ( 11 , 21 , 41 ) . 9. The method according to claim 4, characterized in that the tubular sleeve ( 41 ) is pushed so far over the rope end ( 43 ) that the wire rope ( 40 ) protrudes from the sleeve ( 41 ) on both sides, and that the sleeve ( 41 ) is selected in its outer diameter (D2) and, in the case of plastic deformation on the wire rope ( 40 ), the outer diameter is reduced to such an extent that the reduced outer diameter is larger than the outer diameter (D1) of the wire rope ( 40 ). 10. The method according to any one of claims 1 to 3, characterized in that the tubular sleeve ( 31 , 51 , 61 ) only with a portion of its through hole ( 32 , 52 , 62 ) via the rope end ( 33 , 53 , 63 ) of the wire rope ( 30 , 50 , 60 ), and that the remaining section is used to attach the connecting means ( 34 ; 54 , 64 , 65 ). 11. The method according to claim 10, characterized in that an internal thread ( 34 ) is introduced in the remaining partial section into the through bore ( 32 ) of the sleeve ( 31 ). 12. The method according to claim 10, characterized in that in the remaining partial section into the through bore ( 52 ) of the sleeve ( 51 ), a connecting part ( 54 ) is inserted and pressed with the sleeve ( 51 ). 13. The method according to claim 10, characterized in that in the remaining portion of the sleeve ( 61 ), the sleeve ( 61 ) is pressed into a flat connection tab ( 64 ) and in the region of the connection tab ( 64 ) is provided with a fastening hole ( 65 ) . 14. The method according to claim 4, characterized in that the external thread ( 14 , 24 ) is formed only over a partial length of the sleeve ( 11 , 21 ), and that on the thread-free section of the sleeve ( 11 , 21 ) aids for screwing the cable end connection be molded on. 15. The method according to claim 14, characterized in that the tools include lugs or a hexagon, on which when screwing the rope end connection with a Wrench can be attached and countered. 16. The method according to claim 15, characterized in that the lugs or hexagon are generated by hammering will.