JPH01194808A - Cable grip - Google Patents

Abstract

PURPOSE:To increase strength at an eye section and to prevent breakdown of the eye section, by folding back one end of a cable grip body braided into a hollow tube then enlarging the mesh at one point near to the fold-back end and making an opening for forming the eye section. CONSTITUTION:A cable grip body 21 is formed into a hollow tube of a wire rope 22. One end of the wire rope is adhered through a shrinkable tube 23 and the like, thus providing an opening. The other end of the wire rope is bundled and entirely applied with an adhesive tape and the like to form a fixed section 25 which is folded back at point 26 and inserted into the body 21, thus forming a fold-back section 27. The portion where the mesh of the body 21 close to the fold-back end 26 matches to the mesh at the fold-back section is enlarged to make an opening 2a penetrating vertically, which is employed as an eye section.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to cable grips, and more particularly to cable grips with improved eyes.

[Conventional technology]

(Generally, when passing electric cables etc. into a pipe), first pass a synthetic resin or steel calling wire inside the pipe, and connect a wire or synthetic fiber lobe that is thicker than the calling wire to one end of the calling wire. The lobe is passed through the vibrator by pulling the wire, and the electric cable is passed into the vibrator by connecting the desired electric cable to one end of the lobe and pulling the lobe.

Also, when attaching a target thick wire rope, for example, when attaching an elevator wire rope or a crane wire rope, first pass a thin wire rope or synthetic fiber lobe through one end of this thin lobe, and then attach the target thick wire rope to one end of the thin wire rope. This is done by connecting the lobes and taking off the lobes.

An easy way to connect the above-mentioned electric cables or the desired thick wire ropes (hereinafter collectively referred to as cables) to a lobe for taking over is to connect cables braided into a hollow tube with thin wire ropes or strings. A method using a grip is known.

Such a cable grip will be explained with reference to FIG. FIG. 3 is a side view showing a state in which the lobe and each end of a target electric cable are connected by a cable grip, and shows an example of a conventional cable grip having an eye portion.

In Fig. 3, 1 is a cable grip, and the grip part 2 of this goople grip 1 is usually made by braiding a thin wire rope or string 3 into a hollow tube shape.
When using this to connect the take-up rope 4 and the target cable 5, for example, the opening part 6 of the grip part 2
As shown in the figure, insert the target cable 5, strain the axial direction so that the grip part 2 adheres as closely as possible along the cable 5, and in this state, wrap the open end of the grip part 2 with adhesive tape 7, for example. It is fixed by winding it and tightening it. Further, the take-up rope 4 is tied to the eye portion 8 of the cable grip 1 (this will be described later) by an appropriate method.

When the take-up rope 4 is pulled in the direction t of the arrow 9, the grip part 2 of the cable grip 1 braided into a hollow tubular shape extends in the direction of the arrow 9, its inner diameter becomes smaller, and it tightly fits around the cable 5. , in a tightening form,
Coupled with the fixing force of the adhesive tape 6, the target cable 5 is also pulled in the direction of the arrow 9. 'The conventional goople grip 1 as described above has a grip part 2 which is usually braided into a hollow tubular shape with a thin wire rope or string 3.
In the conventional example shown in FIG. 3, the eye portion 8 is formed of a slightly thicker wire rope or string 10 that is different from the thin wire rope 3 that constitutes the grip portion 2, and is made separately. The eye 8 and the convergent end of the grip 2 are formed by compressing and joining a sleeve 11 made of aluminum or other material.

Another conventional cable grip is shown in FIG. In the cable grip shown in FIG. 4, a thin wire rope or string 3 constituting the cable grip 1
First, the eye part 8 is formed by converging the wire ropes, and after the bundle is bundled by passing it through a tube 12 or the like, the extension part of this thin/diameter wire rope or string 3 is continuously braided to form the grip part 2, and the desired shape is formed. When the grip part 2 having a length of 2 is braided, the end thereof is cut and the end of the braided wire rope 3 is fixed as shown at 13 to prevent unraveling and form an opening 6. In this method, a cable grip in which the eye portion 8 and the grip portion 9 are integrated is formed.

A cable grip having yet another eye portion is shown in FIG. In the cable grip 1 shown in FIG.
Eye part 8, which is generally done with a plaid rope
Cable Grip 1
One end is bent to form the eye part 8, and the eye part 14 in the middle of the cable grip 1 is widened to form the grip part 2.
An insertion part 15 is provided by inserting a certain length into the extension part 2' of the
(Two places in the figure) are tightened and fixed.

A cable grip having yet another eye portion is shown in FIG. In this case, one end of the cable grip 1 is bent to form an eye portion 8 as in the example shown in FIG.
The end 18 of the insertion part 15 is taken out again through the stitch 14', and the grip extension part 2' is removed by this removal part 19.
sewn into the body.

A cable grip having yet another eye portion is shown in FIG. In this case, the eye portion 8 is formed as in the case of FIG. 5, and the portion corresponding to the insertion portion 15 in FIG. This is disassembled into two parts and then re-twisted along the thin wire rope or string 3 that makes up the stitches of the cable grip 1.

[Problem to be solved by the invention]

However, in the cable grip 1 shown in FIG. 3, the eye portion 8 and the grip portion 2 are connected by compressing the sleeve 11, so if this compression force is weak, the eye portion 8 may slip off completely. On the other hand, if this compressive force is too strong, the small diameter wire rope or string 3 at the eye section 8 in the sleeve 11 or at the converging section of the grip section 2 may break, making it impossible to obtain the desired strength. There was a problem.

In addition, in the case of the cable grip 1 shown in Fig. 4,
The eye part 8 has to be created first, and the grip part 2 has to be braided starting from this. Therefore, the fine and coarse manufacturing of the grip part 2 cannot be carried out continuously by machine, and each piece must be individually manufactured one by one. The problem was that there was no other choice but to manufacture it.

In the case of the cable grip 1 shown in FIG.
If a force is applied in the direction of the insertion part 1
Due to the extension of the mesh of the grip extension 2' surrounding the grip extension part 5, a force acts on the insertion part 15, making it difficult to remove the insertion part 15. ) If the force acts biasedly on the insertion side 20 of the eye portion 8, the insertion portion 15 may come off relatively easily, resulting in a problem of poor reliability.

The cable grip 1 shown in FIG. 6 is intended to solve the drawbacks of the cable grip shown in FIG. It is thick and bulky, and has the problem that when passing through the pipe it is intended to pass, it may be larger than the inner diameter of the pipe, or even if it can be passed through, it may be difficult to pass due to the large resistance with the pipe. was.

The cable grip 1 shown in FIG.
Since the cable can be inserted up to the part 2', it has the advantage that the length of the cable grip 1 itself can be shortened. There was a problem in that the thin wire ropes or strings 3' and 3 easily slipped and were easily pulled out at the portions corresponding to 3' and 3', and the desired strength could not be obtained.

Therefore, an object of the present invention is to provide a conventional cable grip as described above, in particular, a cable grip that has a strong eye portion and does not cause the eye portion to come off or break. The purpose is to provide a cable grip that can be made later by cutting it to the required length.

[Means to solve the problem]

In the present invention, the grip body is continuously braided by a machine,
Cut this to the required length, fold one end of the obtained hollow tubular cable grip body outward or inward, and widen the folded part near the folded end and the stitches of the cable grip body to form one upper and lower penetration opening. The eye part forms a strong cable grip.

The cable grip of the present invention uses a conventionally used thin wire rope or string, particularly a composite string-like product, to
It can be made by braiding it into a hollow tube using a conventionally used stringing machine and cutting it into a desired length.

It is preferable to use the above-mentioned composite string-like product as the thin-diameter string, and for details of such a composite string-like product, see, for example, JP-A-62-78276 and JP-A-62-53495. is incorporated herein by reference.

[For production]

In the cable grip of the present invention, the eye portion is formed by folding one end of the cable grip body braided into a hollow tubular shape outward or inward, and widening the folded portion and the stitches of the cable grip body itself. The strength is sufficient, the eye part will not come off or disintegrate, and even if a biased force is applied to the eye part, it will not come out.

〔Example〕

Embodiments of the cable grip of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 22 denotes a thin wire rope, and the cable grip main body 21 is formed into a hollow tubular body by continuously braiding the wire rope 22 using a conventional method. Cable grip body 2 with the length necessary to make individual cable grips from this long hollow tubular body.
After cutting 1, one end of each small diameter wire rope is tied with at least 2 ends to prevent the braid from unraveling.
Each cable is adhesively fixed with adhesive tape, a shrink tube, or a metal tube 23, and an opening 24 is provided for inserting the desired cable.

Further, the other end 25 is fixed by converging and wrapping the whole with adhesive tape to form a fixed part 25, and this fixed part 25
is folded back at 26 as shown in the figure and inserted into the cable grip main body 21 to form a folded portion 27. Then, the stitches of the cable grip body 21 near the folded end 26 and the stitches of the cable grip body 21 of the folded part 27 inserted therein are widened as shown in the figure, and an opening 28 passing through the top and bottom is formed. Provide this opening 2
8 is the eye part.

In this example, reference numeral 29 denotes an increased rope, which is attached to the eye part 28 by tying the take-off rope 4 (see Figure 3) to the grip part into which the target cable 5 (see Figure 1) is inserted when pulled. 30 (indicated by 2 in Figure 3),
Since the change in diameter with respect to the portion where the folded portion 27 is present becomes large, the strength of the cable grip decreases, so it is preferable to insert an increasing lobe 29 (that is, a thick rope for reducing the change in diameter).

Next, another embodiment of the cable grip of the present invention will be described with reference to FIG. In Figure 2, the wire rope 2
2. Adhesive tape, shrink tube or metal tube 23, and opening 24 are the same as in FIG.

In this example, the folded portion 27 is formed by fixing one end of the adjacent thin wire ropes 22 with at least two adhesive tapes, shrink tubes or metal tubes 30 to prevent the braid from unraveling, and It is folded back and formed.

Similarly to the embodiment shown in FIG. 1, the cable grip main body 21 and the folded portion 27 near the folded end 26
The stitches at the matching positions are widened to form an opening 28 passing through the top and bottom, and this is used as an eye part.

Reference numeral 29 denotes an additional rope, which functions as shown in FIG.

In each of the above embodiments, the cable grip main body 21 is formed using a thin wire rope 22, but as described above, it can also be made of a synthetic fiber string, particularly a composite string-like product.

In addition, it is preferable to wrap the folded portion 27 with adhesive tape or protect the entire outside portion with a shrink tube when the folded portion 27 is folded outward.

〔Effect of the invention〕

As described above, in the cable grip of the present invention, one end of the cable grip main body, which is made up of six pairs of hollow tubular cables, is folded back outward or inward, and a stitch near the folded end is widened to form an eye portion through the upper and lower ends. Because of this, the strength of the eye part is sufficient, there is no damage due to the eye part coming off or unraveling, and it will not come off even when an unbalanced force is applied.

Further, the braiding of the cable grip main body can be industrially produced continuously using a conventional lace-making machine, which is efficient, and can overcome the drawbacks of discontinuous production as in the conventional example shown in FIG.

[Brief explanation of the drawing]

1 to 2 are schematic side views of a cable grip having an eye portion according to the present invention, and FIGS. 3 to 7 are schematic side views of a cable grip having a conventional eye portion. 21... Cable grip body, 22... Thin wire rope or string, 25... Fixing part, 26... Folded end, 27... Folded part, 28... Opening (eye part), 29 ...Increased rope.

Claims (1)

[Claims] (1) The eye part of the cable grip, which is made by braiding thin wire rope or string into a hollow tubular shape, folds one end of the braided hollow tubular cable grip body outward or inward, and the folded part near the folded end and the cable grip A cable grip formed by widening the stitches of the main body to form a single upper and lower penetration opening.