JPH0411465B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is applicable when two or more wire ropes are spliced together to form one long wire rope, or when both ends of a rope are spliced to form a ring. The present invention relates to a method of joining wire rope ends together.

(Prior Art) Conventionally, as shown in FIG. 4, as a method for connecting wire ropes, the ends of wire ropes A and B to be connected are stranded for a desired length.
Disassemble into A ₁ to A ₆ and B ₁ to B ₆ respectively, and untwist every other strand A ₂ , A ₄ , A ₆ of one wire rope A as shown in Fig. 5. While twisting every other strand B ₂ , B ₄ , B ₆ of the other wire rope B into the return trace,
The remaining strand A ₁ of one wire rope A,
After twisting A ₃ and A ₅ in the same manner into the untwisted traces of the remaining strands B ₁ , B ₃ , and B ₅ of the other wire rope B, cut the untwisted strands to an appropriate length and remove the strands. The corresponding twisted strands are made to correspond as shown in FIG.

At this time, the strands A ₂ , A ₄ ,
A ₆ , B ₁ , B ₃ , B ₅ are cut short in advance as shown in FIG. 4, and the strands A ₁ , A ₃ ,
Make sure to clearly correspond to A ₅ , B ₂ , B ₄ , and B ₆ .

Next, each set (in the figure, 6
In this method, for example, when combining the twisted strand A ₁ of one wire rope with the untwisted strand B ₁ of the other wire rope, first Spikes as shown in Figure 7
This is done by removing a predetermined length of the rope core within the range in which the strand ends are to be inserted into the rope using a wire rope, and then inserting the strand ends of both wire ropes into the removed rope core.
At this time, the end of the strand to be inserted into the rope core trace is previously wrapped with fiber yarn to form it to the same thickness as the rope core.

This method is also performed for other sets of strand ends to join them, but the insertion methods for the strand ends include parallel splicing as shown in Figure 8a, single cross splicing as shown in Figure 8b, There is a two-fold cross splice shown in FIG.

(Problem to be Solved by the Invention) However, when such a splicing method is performed, the part before both strand ends are inserted into the removed rope core trace, that is, the part where both strand ends are adjacent to each other. As shown in FIG. 9, the number of strands is one more than the number of strands making up the rope, and the diameter of this part is approximately 1.10 times thicker than the other rope parts.

Therefore, fatigue rupture occurs due to abrasion and deformation of the strands at this spliced part where the rope diameter partially becomes large, and for this reason, it is difficult to tighten the large diameter part with a clamp or hit it with a hammer. Measures have been taken to reduce the diameter, but if the diameter is extremely compressed, the problem arises that deformation occurs in the strands and accelerates deterioration.

The object of the present invention is to provide a wire rope connection method that solves these problems.

(Means for Solving the Problems) In order to achieve the above object, the wire rope connecting method of the present invention involves disassembling the opposing ends of the wire rope to be spliced into strands of a predetermined length, and connecting the disassembled strands together. An appropriate number of strands of wire rope are twisted into the untwisted strand portion of the other wire rope, and the twisted strand ends and the untwisted strand ends corresponding to the strand ends are made to be parallel to or intersect with each other. When splicing by inserting an appropriate length of rope core into the removed area at the connection site, remove the untwisted strands of the corresponding strands at the portions where they touch each other, and then remove the twisted strands of these strands. It is characterized by inserting the end into the removal trace of the rope core.

(Function) At the end of the strand to be inserted into the removed rope core, the lower twisted strands of the parts that are parallel or intersect with each other are removed, so that the contact part of these two strands becomes one strand. It has a thickness that is approximately equal to the diameter, and therefore has the same diameter as the other parts of the rope, making it difficult for the strands at the spliced part to undergo fatigue fracture due to wear or deformation.

In addition, since both strands are compressed and integrated into one another at the joint, the end of the strand inserted into the rope core removal trace becomes difficult to pull out, so the length of the strand inserted into the rope core removal trace is The length can be made shorter than that of the conventional method, and as a result, the length of the entire connecting portion can be made shorter.

(Embodiment) To explain the embodiment of the present invention with reference to the drawings, first, the ends of the ropes to be connected are disassembled into strands of a predetermined length from their tips, and then twisted together, unlike the conventional example described above. The same is true.

That is, when connecting wire ropes A and B, each of which is made up of six strands twisted around a rope core C, the ends of the wire ropes are connected to the strand _A1 by a desired length.
~ A ₆ and B ₁ ~ B ₆ respectively, and while untwisting every other strand A ₂ , A ₄ , A ₆ of one wire rope A, attach one strand of the other wire rope B to the untwisted trace. While twisting the strands B ₂ , B ₄ , and B ₆ of the book holder, one wire rope A
Twist the remaining strands A ₁ , A ₃ , A ₅ of the other wire rope B in the same way on the untwisted traces of the remaining strands B ₁ , B ₃ , B ₅ of the other wire rope B, and then untwist the strands to an appropriate length. The strands are cut into two and matched with the corresponding twisted strands as shown in FIG.

Next, six sets of corresponding strand ends are combined, but before that, the rope core C in the part where the strand ends are inserted is
A pre-twisted strand of each set of strands to be inserted into the rope core removal space D is removed from the mutually contacting portions.

That is, as shown in FIG.
In the pair of strands A ₁ and B ₁ , the central strand a of the length from position a in front of the part l where the strand ends are in contact with each other after insertion to position b reaching the rope core trace ₁ and b ₁ are cut and removed, respectively, and the second strand layer a ₂ , _{b 2} from the outermost layer covering the center strand a 1 , b ₁ remains slightly longer than the center strand. Cut and remove length portions from c to d, respectively. FIG. 2 shows the end of the strand from which such pre-twisted strands have been removed.

In this way, while leaving the outermost strands of the strand, the outer strands are successively removed to be shorter than the inner strands, and the outer strands are used to cover the inner strands. It is shaped so that it is wrapped so that when the wire rope passes through a pulley etc. and is bent during use, the removed strand ends do not pop out from between the outermost strands of strands. . Note that depending on the rope configuration, the diameter of the strand, and the tensile strength, the cut end of the strand may be partially annealed to make it easier to deform.

In order to remove the twisted strands of the strand in this way, at the end of the strand, pull them out from between two adjacent strands of the outermost strand layer and perform the above-mentioned b and d
After cutting the part, push it in and do the same thing as a,
What is necessary is to pull out the part c from between two adjacent strands of the outermost strand layer, cut it, and then pull out the strands between a and b and between c and d.

After removing the pre-twisted strands of the strands of each group A ₁ , B ₁ to _{A 6} , B ₆ in the areas where they touch each other, the tips of the strands of each group to be inserted into the rope core removal space D are removed. After winding the fiber yarn F and forming it to have approximately the same diameter as the rope core C, the strand ends of each set are spliced by inserting them into the area where the rope core was removed using the parallel splicing or cross splicing. It is something to match.

At this time, the area where the rope core rope is removed where the strands touch each other is covered with an appropriate pillow material G such as hemp core material or flexible synthetic resin to fill the space.
is inserted to fill the space.

After completing the splicing work, the spliced portion is shaped using a clamp, hammer, or the like.

(Effects of the Invention) As described above, according to the wire rope connecting method of the present invention, after removing the ply-twisted strands where the strands to be spliced touch each other, the ends of these strands are connected to the removed rope core. Since the connecting part of the spliced strands can be formed to have a thickness equal to the diameter of one of the two strands, the spliced part can be inserted into the other part of the rope. Since the diameter is approximately the same as that of the wire rope, there is almost no risk of fatigue breakage due to wear or loss of shape of the strands in the spliced part, and the degree of deterioration is almost the same as in other parts, thereby increasing the service life of the wire rope. It is something that can be done.

In addition, since both strands compress and bite into each other at the splicing part due to the removal of the lower twisted strands, it becomes difficult for the strand end inserted into the rope core removal trace to come out, making it difficult to remove the rope core. The length of the strand inserted into the trace can be made shorter than in conventional methods, and thus the length of the entire connecting portion can be made shorter.

Furthermore, since the rope diameter at the connection part is equal,
The anti-slip force of rope gripping machines used on cableways etc. is stabilized, and the design thereof is facilitated.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view for explaining how to combine a set of strand ends, and FIG. 2 is a side view of a strand end with the first twisted wire removed. 3 is a simplified vertical sectional side view of the spliced part of the wire rope, FIG. 4 is a simplified side view of the end of the wire rope to be connected, and FIG. 5 is a diagram for explaining the twisting of the strands. A side view, FIG. 6 is a simplified side view of the connecting portion of both wire ropes with twisted strands, FIG. 7 is a simplified side view showing the method for removing the rope core, and FIGS. 8 a to c
Figure 9 is a side view showing three types of joining methods, Figure 8 is Figure 9.
It is a longitudinal cross-sectional view taken along the aX-X line. A, B...Wire rope, C...Rope core rope,
_A1 to _A6 and _{B1 to B6 ...} Strand, D...Rope core removal trace, _a1 , _a2 , _b1 , _b2 ...Element wire.

Claims (1)

[Claims] 1. Disassemble the opposing ends of the wire ropes to be spliced into strands of a predetermined length, and twist the strands of both disassembled wire ropes in an appropriate number into the untwisted strands of the other wire rope. A joint is made by inserting the twisted and twisted strand ends and the untwisted strand ends corresponding to the strand ends parallel to each other or crossing each other into the remains of the rope core rope from which an appropriate length has been removed at the connection site. A method for connecting wire ropes, characterized in that, when joining together, the first twisted strands of the corresponding strands are removed at the portions where these strands touch each other, and then the ends of these strands are inserted into the removed remains of the rope core. . 2. When the strand is composed of two or more strand layers, the strands in the layer next to the outermost strand layer are removed to be shorter than the inner strand layer to form the outer strand layer. 2. The method for connecting a wire rope according to claim 1, wherein the wire rope layer on the inner layer side is covered with a wire rope layer.