JP3198865U - Long fiber rope connection structure and long fiber rope - Google Patents

Abstract

The number of strands in a connecting portion is the same as the number of strands forming a rope, the diameter is the same as other parts, and there is no increase in local diameter at all. A long fiber rope connection structure is provided. After each of the tail part 4A of the end piece rope 4 and the start end part 3A of the follower rope 3 is unraveled in a unit of each strand at a predetermined length, half of the opposing strands of both ends are separated. Each of the rope leads is pulled out from the braid at a length of about 2 to 5 times, and the strand of the other party is inserted and braided into a portion corresponding to the presence of the strand after being pulled out. The connecting portion 5 is formed. [Selection] Figure 1

Description

  The present invention is a particularly long and very thick fiber used to moor offshore structures for excavation of fuel resources such as submarine oil fields, mineral resources, methane hydrate, etc. It relates to a rope and its connection structure.

  In conventional fiber ropes, strands obtained by twisting a plurality of yarns obtained by twisting raw yarns are wound on a bobbin, and this bobbin is placed on a carrier of a braiding machine or a steelmaking machine to draw a special trajectory. The strand that is fed out while being moved is guided to the voice and is composed (see Patent Document 1).

By the way, it is an important requirement that the fiber rope employed in the field such as the ocean described above is thick and long in terms of the environment to which it is applied.
However, since the winding yield of the strands in the bobbin has a mechanical limit, the winding yield decreases as the rope diameter (strand diameter) increases. Further, the rope length is also limited to the winding yield of the strands wound on the bobbin. In other words, it was impossible to manufacture a long and long rope.

  Therefore, when long ropes were required, they were obtained by forming eyes at the ends of the finished braided rope and connecting these eyes directly or via connecting fittings. . As another means, a method is adopted in which the braids at the ends of the two ropes are loosened and the strands are alternately inserted to form the splice SS (see Patent Document 2).

  However, according to the above means, the diameter of the connecting part becomes more than double, and the weight changes, and when the rope is extended or pulled up, it is difficult to move the rope smoothly by being caught on the pulley etc. Therefore, there is a drawback that damage is easily caused and damage is easily concentrated on the connection portion.

  With the intention of improving this conventional technique, a technique as shown in Patent Document 3 has been proposed. That is, in this proposal, in the middle of the braid of the rope, the tip of the strand of the next lot is connected to the bottom of an arbitrary end strand at the end of the braided rope at the voice inlet, and this braid is guided to the voice to be braided. Continually, connecting the tip of the strand of the next rod to the other end-of-strand strands for a predetermined length, and repeatedly braiding the connected portion to the voice to obtain a long rope. It is.

Japanese Utility Model Publication No. 01-164780 JP 10-258139 A JP 2007-119933 A

However, the technique proposed in Patent Document 3 employs a joining means in which both strands are partly polymerized when joining the tip of the strand of the next rod to the bottom of the end strand. That is, a technique is adopted in which a fiber rope formed by braiding n fiber strands (where n is an even number of 8 or more) has to have n strands plus 1 strands at the connecting portion. In other words, it should be referred to as a modification of the method of forming the splice SS, and the connecting portions of the strands are merely different in phase in the length direction of the rope.

  Therefore, although the diameter of the rope changes partially, the connecting portion and the other part cannot have the same diameter, and the rope obtained by the conventional method of forming the splice SS inevitably. It cannot be denied that similar disadvantages occur.

  Accordingly, as a result of various studies on the above-described conventional techniques, the present inventors have devised a method in which the number of strands is n even at the connecting portion when connecting the tip portion of the strand of the next rod to the bottom of the end strand. Therefore, the diameter of the connecting part of the strands is the same as the other parts and is not accompanied by an increase in the local diameter at all. Since it came to be able to provide the connection structure and the elongate fiber rope comprised with the connection structure, it proposes here.

  Therefore, the object of the present invention is to have the same number of strands at the connecting portion as the number of strands forming the rope, the diameter is the same as that of other portions, and there is no increase in local diameter at all. Another object of the present invention is to provide a fiber rope connection structure that can be elongated as a single rope of the same diameter from beginning to end, and a long fiber rope composed with this connection structure.

  In order to achieve the above object, the long fiber rope connection structure according to claim 1 of the present invention is made up of N pieces (provided that N pieces are eight or more pieces) obtained by composing n pieces of fiber strands. An even number of child ropes are wound on multiple bobbin carriers, pulled out from each bobbin carrier, and arranged at the end of the braided rope at the voice entrance to obtain a continuous long braided rope that is composed through the voice. A connecting structure of long fiber ropes that connects the tip of the trailing rope to the bottom of the trailing end of the rope, and guides the connecting part to the voice to be braided. In addition, after each of the starting end portions of the trailing ropes has been loosened into each strand unit by a predetermined length, half of the opposite opposing strands are pulled out from the braid over the length corresponding to the unwinding length. Without Is the other party of the strands into a strand presence corresponding portions are inserted braided of after, the withdrawn strands portion connected by being respectively cut is formed.

  In the long fiber rope connection structure, the length of the connecting portion according to claim 1 is preferably 3 to 5 rope leads (claim 2).

  Moreover, in the connection structure of a long fiber rope, it is desirable to leave the space | interval of each connection part of Claim 1 3 or more (Claim 3).

  In order to achieve the above object, the long fiber rope of the present invention is a long fiber rope obtained by obtaining N child ropes composed of n fiber strands and braiding the N child ropes. Then, in the connecting portion where the end of the trailing rope is connected to the bottom portion of the finishing rope by a predetermined length, half of the opposing strands are pulled out from the braid of the connecting portion, respectively. The strands of the other party are inserted and braided into the corresponding portions of the strands after being drawn, and the drawn strands are cut to form connecting portions, respectively, and the length of the connecting portions is 3 to 5 rope leads. The interval between the connecting portions of the N child ropes is set to 3 rope leads or more (Claim 4).

In the inventions according to claims 1 to 4 of the present invention, the other party is located at the corresponding portion of the strand that originally existed at both the bottom end of the end rope and the child rope of the next lot, that is, the start end of the follower rope. Thus, the diameter of the connecting portion of the child rope is only the original number n of strands for braiding the child rope. Unlike the conventional method in which the number of strands is n + 1, the suspension has a structure in which the diameter of the child rope does not increase.

  As described above, the long fiber rope connection structure and the long fiber rope according to claims 1 to 4 of the present invention are the original number of strands that braid the child rope regardless of the diameter of the connecting portion of the child rope. Unlike the conventional method in which the number of strands is n + 1, but only in part n, the structure is such that the diameter of the child rope does not increase. Therefore, if the braid is guided by guiding the child rope having such a connecting part to the voice, the diameter is the same as other parts, and there is no increase in the local diameter at all. A long fiber rope can be obtained as a single rope having a diameter. In addition, the rope can move smoothly without being caught by a pulley, etc. without being accompanied by a change in weight, and the rope can be moved smoothly without being caught by a pulley. The connection structure of the long fiber rope and the long fiber rope can be provided.

  Further, in the device according to claim 2, by making the length of the connecting portion 3 to 5 rope leads, the connecting operation is easy, and sliding and separation of the connecting portion can be prevented, and a desired strength can be obtained. .

  Further, in the invention according to claim 3, since the interval between the connecting portions is 3 rope leads or more, the work is troublesome by simultaneously connecting a large number of strands at a time on the rope-making machine. This eliminates the need for manual labor and facilitates the production of long fiber ropes.

  Furthermore, in the invention according to claim 4, N child ropes composed of n fiber strands are obtained, and a long fiber rope braided with the N child ropes, the bottom of the end rope In the connecting part where the predetermined length of the tip of the trailing rope is connected to each other, half of the opposing opposing strands are each pulled out from the braid of the connecting part, and the strands corresponding to the extracted strands The strands of the other party are inserted and braided, and the drawn strands are cut to form connecting portions. The length of the connecting portions is 3 to 5 rope leads, and the N child ropes are connected to each other. Since the distance between the portions is 3 rope leads or more, the diameter of the connecting portion of the child rope is only the original number n of strands for braiding the child rope. In other words, partly, unlike the conventional method in which the number of strands is n + 1, the diameter of the child rope does not increase, and it is substantially long as a single rope with the same diameter from the beginning to the end. A fiber rope can be obtained. Moreover, without changing the weight, the rope can be moved smoothly without being caught by a pulley when the rope is drawn out or pulled up, and there is little risk of being damaged by rubbing. Due to its strength, it has become possible to provide a long fiber rope that is difficult to cause damage over many years. Furthermore, since a conventional general fiber rope can be obtained by twisting a strand to the right and twisting the strand to the left (see FIG. 18), the strand is caused by a so-called lateral external force in a direction perpendicular to the rope core. Although it is easily understood, it is inferior in durability and may deteriorate within an early stage, the long fiber rope according to the present invention is a child rope, that is, a rope instead of a strand, because the component corresponding to the conventional strand is (Refer to FIG. 17). This lateral stress load can be strongly counteracted, has a sufficiently satisfactory strength, and can provide a high-strength long fiber rope that can sufficiently withstand long-term use.

The connection structure of the long fiber rope which concerns on this device, and the Example of a long fiber rope are shown, and it is the whole explanatory drawing of a connection part. It is the elements on larger scale of the state where the strand of the connection part was dissolved. It is a partial expansion explanatory view of the state where one strand of the follower rope was attached after the end of pulling out one strand of the end rope. Furthermore, it is the elements on larger scale of the state inserted once. It is a partial expanded explanatory view of the state inserted 4 times. It is the elements on larger scale of the state which processed the terminal by cut | disconnecting the strand by the side of the drawn end piece rope which was pulled out. It is the elements on larger scale of the state where the 2nd strand was attached. Furthermore, it is the elements on larger scale of the state inserted once. It is a partial expanded explanatory view of the state inserted 4 times. It is the elements on larger scale of the state which processed the terminal by cut | disconnecting the strand by the side of the drawn end piece rope which was pulled out. It is a partial expansion explanatory view of the state where one strand of the end child rope was attached after drawing one strand of the follower rope. Furthermore, it is the elements on larger scale of the state inserted once. It is a partial expanded explanatory view of the state inserted 4 times. It is the elements on larger scale of the state which processed the terminal by cutting the strand by the side of the rope after pulling out. It is a partially abbreviate | omitted part explanatory drawing of the steelmaking machine used for this invention. It is partial explanatory drawing which shows the relationship between a long fiber rope and a child rope, and a connection part. It is a partial enlarged drawing substitute photograph of the long fiber rope of this invention. It is a partial enlarged drawing substitute photograph of the long fiber rope of a comparative example.

  The connecting method is as follows. The child rope of the next lot, that is, the tip of the trailing child rope, is 2 to 5 times as long as the rope-lead. The lead and the number of insertions are 4 times), and almost half of the opposing strands of both the bottom end of the end rope and the start end of the rear end rope are 2-5 of the rope-lead. The strand is pulled out from the braid with a length of about twice, and the strand of the other party is inserted and braided into a portion corresponding to the presence of the strand after being pulled out. Therefore, six of the twelve ends of the end rope and the start end of the trailing rope are inserted into the six ends, and six are removed. Unlike conventional wraps and splices, the connecting part does not overlap the strands of the end of the end rope and the starting end of the trailing rope, so the rope diameter of the connecting part is other than the connecting part. As a single rope with the same diameter from the beginning to the end, it is theoretically infinite, and practically 500 ~ A 2000m long fiber rope can be made.

Hereinafter, the connection structure of the long fiber rope which concerns on this invention is demonstrated based on description of FIGS.
The structure shown in the figure shows a case where the present invention is applied to a 12 twist rope.
As shown in FIG. 15, the long fiber rope 1 shown here (see FIG. 17) is obtained by winding twelve child ropes 2 on twelve bobbin carriers 20 and passing them through voices 21. Specifically, a known 12-ply steel rope is used. Since the details of the structure are also known, an example is displayed by assigning figure numbers to the main components. In the figure, 22 is a string making machine body, 21 is the voice arranged above the center of the string making machine, 23 is a capstan mechanism, 24 is a tension roller, and 25 is a take-up roller.

When the motor is driven, the bobbin carrier 20 rotates by the operation of each horn disk 27 fixed to the rotating shaft 26. Each saddle is driven by the rotational movement of the horn disk 27, and the bobbin 28 mounted on each bobbin carrier 20 rotates at the base portion by feeding out the strand, and the strand is guided and composed by the voice 21 at the center of the apparatus. It becomes a twisted rope.

  The child rope 2 is composed of, for example, eight yarns made by twisting eight synthetic filament multifilament yarns 1260 denier to form a yarn, and twelve twisted yarns. Further, the long fiber rope 1 is composed by twisting 12 pieces of the child ropes 2 together.

  In addition, the material of the child rope 2 is not particularly limited, and is appropriately adopted in consideration of the place and conditions of use, but general synthetic fibers such as nylon, polyester, tetron, polypropylene, polyester, etc. Other examples include highly functional fibers such as wholly aromatic polyamide fibers, wholly aromatic polyester fibers, polyparaphenylene benzobisoxazole fibers, polyvinyl alcohol fibers, and ultrahigh molecular weight polyethylene fibers. Among these, ultra high molecular weight polyethylene fibers are preferable. The above highly functional fibers can be produced by a known method or a method equivalent thereto.

  The method of making the long fiber rope 1 is the same as in the present invention. When the composition of one lot is over, the bobbin 28 in which the child rope of the next lot, that is, the trailing rope 3 is fully wound, is replaced. It replaces with the carrier 20, and the trailing rope 3 is pulled out above the bobbin carrier 20, and the leading end 3 </ b> A of the trailing rope 3 is suspended from the trailing end of the long fiber rope 2 as shown in FIGS. The long fiber rope 1 is obtained by connecting the bottom end 4A of the end rope 4 to be connected to form the connecting portion 5.

However, the end portion 3A of the trailing rope 3 is connected to the bottom portion 4A of the end rope 4 to form the connecting portion 5. The structure of the connecting portion 5 has a feature of the present invention.
That is, as shown in FIG. 1, six of the 12 strands of the tip portion 3A of the follower rope 3 and the tail portion 4A of the end piece rope 4 are inserted into the opposite rope. At this time, the strands to be inserted are in a point where six strands are sequentially removed corresponding to the insertion of the counterpart strand. That is, 6 out of 12 are inserted and 6 are removed. As a result, six of the unraveled part on the end of the end rope are replaced with six of the follower rope 3, and on the contrary, six of the follower rope 3 are replaced with six of the end of the end rope 4. The thickness remains one state.

Hereinafter, characteristic points of the structure of the connecting portion 5 will be described with reference to FIGS.
First, as shown in FIG. 2, the tip 3A of the trailing rope 3 (on the right side on the paper) and the tail 4A of the trailing rope 4 (on the left side on the paper) are untwisted over a predetermined length, respectively. Divided into 12 strands 3-1 to 3-12 and 4-1 to 4-12. The predetermined length is appropriately selected based on the entanglement with the strength of the long fiber rope 1, but is preferably about 2 to 5 rope leads. In terms of the number of insertions, it is ideally 12 times or more, but considering the efficiency and strength of splicing work, the number of insertions is preferably at least 6 times. If it is too long, it takes time to create the connecting portion 5. On the other hand, if it is too short, it slips and separates, and the strength becomes weak. As a result of various experiments, it is judged that the above 3-5 rope lead is appropriate.

  Next, of the twelve strands of the distal end portion 3A of the succeeding child rope 3 and the tail portion 4A of the end-finishing rope 4, the distal end portion 3A of the succeeding child rope 3 and the end-ending rope 4 The corresponding strands 3-1 and 4-1 corresponding to the bottom 4 </ b> A are selected.

  Next, as shown in FIG. 3, the selected strand 4-1 of the end rope 4 is slightly pulled out, and the strand 3-1 of the follower rope 3 is inserted into the trajectory after the drawing.

Furthermore, as shown in FIG. 4, the selected strand 4-1 of the end rope 4 is further pulled out, and the selected strand 3-1 of the follower rope 3 is pulled out accordingly. The end rope 4 is inserted after the strand 4-1 in order.

  By repeating the above operation, as shown in FIG. 5, the strand 4-1 of the end rope 4 is pulled out to a predetermined position, and then the strand 3-1 of the follower rope 3 is inserted, Finally, the tip of the strand 3-1 of the trailing rope 3 is finished and pulled out of the trailing rope 4.

  Further, in the next procedure, as shown in FIG. 6, the leading end portion of the strand 3-1 of the trailing rope 3 is further inserted into the trailing rope 4. The strand 4-1 of the drawn end rope 4 is cut so as not to overlap with the tip of the strand 3-1 of the trailing rope 3. That is, the insertion is completed by abutting the rear end of the strand 4-1 of the drawn end rope 4 and the front end of the strand 3-1 of the follower rope 3.

  Next, of the twelve strands of the distal end 3A of the succeeding rope 3 and the tail 4A of the end 4 of the unrolled rope, the tip 3A of the succeeding rope 3 and the end 4 The next corresponding strands 3-2 and 4-2 corresponding to the bottom portion 4A are selected, and as shown in FIG. 7, the strands 4-2 of the selected end-to-end rope 4 are slightly pulled out, and the strands are pulled out. The strand 3-2 of the follower rope 3 is inserted into the rear trajectory.

  Further, as shown in FIG. 8, the selected strand 4-2 of the end rope 4 is further pulled out, and the selected strand 3-2 of the follower rope 3 is pulled out accordingly. Insert sequentially after the strand 4-2 of the end rope 4.

  By repeating the above operation, as shown in FIG. 9, the strand 4-2 of the end rope 4 is pulled out to a predetermined position, and then the strand 3-2 of the follower rope 3 is inserted, Finally, the tip of the strand 3-2 of the trailing rope 3 is finished and pulled out of the trailing rope 4.

  Further, in the next procedure, as shown in FIG. 10, the tip of the strand 3-2 of the trailing rope 3 is further inserted into the trailing rope 4. The strand 4-2 of the drawn end rope 4 is cut so as not to overlap with the tip of the strand 3-2 of the trailing rope 3. That is, the insertion is completed by causing the rear end of the strand 4-2 of the drawn end rope 4 to abut the front end of the strand 3-2 of the follower rope 3.

  The above insertion operation is similarly performed on the remaining four pieces 3-3 to 3-6 and 4-3 to 4-6 of the follower rope 3 and the end piece rope 4, respectively. The six strands of the end are finished and replaced with the six strands of the child rope 4.

  For convenience of explanation, only the work progress in a state where two strands are inserted is shown in the drawing, and the illustration of the progress of the insertion work of four strands is omitted.

Next, on the contrary, the work of inserting the remaining six strands 4-7 to 4-12 of the end piece rope 4 into the trailing piece rope 3 is started.
One strand 4-7 of the remaining six ends of the end rope 4 and one strand 3-7 of the remaining six rope ropes 3 are selected, as shown in FIG. Then, the selected strand 3-7 of the trailing rope 3 is slightly pulled out, and the strand 4-7 of the trailing rope 4 is inserted into the trajectory after the pulling.

  Further, as shown in FIG. 12, after the selected strand 3-7 of the trailing rope 3 is further pulled out, and the selected strand 4-7 of the end rope 4 is pulled out accordingly. It inserts sequentially after the strand 3-7 of the Yoko rope 3.

  By repeating the above operation, as shown in FIG. 13, while pulling out the strand 3-7 of the trailing rope 3 to a predetermined position, and then inserting the strand 4-7 of the trailing rope 4; Finally, the rear end of the strand 4-7 of the end rope 4 is pulled out of the rear rope 3.

  Further, in the next procedure, as shown in FIG. 14, the tip of the strand 4-7 of the end piece rope 4 is further inserted into the follower rope 3. The drawn strand 3-7 of the trailing rope 3 is cut so as not to overlap with the rear end of the strand 4-7 of the terminating rope 4. That is, the insertion is completed by abutting the rear end of the strand 4-1 of the drawn end rope 4 and the front end of the strand 3-1 of the follower rope 3.

  The above insertion operation is performed in the same manner for the remaining five pieces 3-8 to 12 and 4-8 to 4-12 of the follower rope 3 and the end piece rope 4, respectively. The strand of the book ends and the six strands of the child rope 4 are replaced.

  The above insertion work is performed manually by a person.

  In this way, by connecting the tip portion 3A of the follower rope 3 to the bottom portion 4A of the end piece rope 4, the connecting portion 5 can be used as shown in FIG. On the other hand, 6 on the 4th side are replaced with 6 of the follower rope 3, and on the contrary, 6 of the follower rope 3 are replaced with 6 on the end of the child rope 4, and the thickness remains one state.

  When the rope rope 2 having finished connecting the terminals as described above is continuously operated, the bobbin 28 is rotated at the base portion by the extension of the rope rope 2, the rope rope 2 is guided, and the voice of the device center 21 and becomes a 12 twist rope as shown in FIGS.

  The important point here is to avoid concentrating the terminal connecting portions of the twelve child ropes 2, that is, the connecting portion 5 at one place in the length direction of the long fiber rope 1. In general, the total length of the child rope 2 is not different for each bobbin 28. Therefore, the composition end of the child rope 2 is almost the same for all the bobbins 28, but the length of each of the child ropes 2 is long. It is important to make the position of the connecting portion 5 different in the length direction of the fiber rope from the viewpoint of increasing the rope strength and performing efficient connecting work. The distance between the positions is desirably 3 to 7 rope leads, and preferably about 5 rope leads.

  For convenience of explanation, each figure shows a state in which a space is provided between the distal end portion 3A of the trailing rope 3 and the bottom portion 4A of the trailing rope 4; Then, there is almost no gap between them, and the joining work is performed with the two being in close contact.

  Therefore, the number of strands at the connecting portion is the same as the number of strands forming the rope, the diameter is the same as other portions, and there is no increase in the local diameter at all. The rope can be long as a single rope, and it does not change in weight. The rope can move smoothly without being caught by a pulley when it is pulled out or pulled up, and it can be damaged by rubbing. It has become possible to provide a long fiber rope that is less likely to cause damage over many years.

Next, the specific example of the long fiber rope of this invention is shown.
Nylon fiber multifilament yarn 1260 denier 8 twisted yarns were formed into a set of 8 yarns, and 12 yarns were twisted to produce a child rope 2. Twelve of these sub ropes 2 are braided on a vertical rope-making machine, and on the way, a splice is formed by inserting four times into each sub rope 2 and a long fiber having a diameter of 50 mm and a total number of multifilaments of 9216. A rope 1 was obtained.

  Next, by the same manufacturing method as the above-described long fiber rope 1, the number of insertions was increased to 5, 6, 9, and 12 to prepare four pieces.

  Next, for comparison, a rope was prepared by a conventional method so that the total number of multifilaments was 9216 as shown in the drawing substitute photograph of FIG. That is, four yarns made by twisting eight 1260 denier nylon filaments are combined to form a yarn, and 24 strands are twisted to form a strand. The ropes having a diameter of 50 mm were obtained by arranging them in pairs and twisting six of them in a right-hand twist and the other six pairs in a left-hand twist.

  From the results of the strength test of both ropes, the breaking strength (K / N) is 628 in the above-mentioned four-turn long fiber rope 1 according to the present plan, whereas it is 648 in the comparative rope obtained by the conventional method. The strength utilization rate (g / D) of the long fiber rope 1 according to the present invention was 5.56, whereas the rope of the comparative example showed 5.98. In addition, in all of the four examples of the present invention with 5 or more insertions, the breaking strength and strength utilization rate were higher than in the case of 4 insertions.

In view of the above results, the decrease in strength due to the long fiber rope 1 according to the present invention was within a negligible range and was satisfactory.
Accordingly, it is understood that the larger the number of insertions in the connecting portion 5 is, the smaller the difference between the above numerical values is, but ideally, 12 times and at least 6 times or more are desirable.

  Each embodiment described above is not necessarily limited to the structure shown in the drawings, and the individual structures and shapes shown can be combined with each other or used within a scope not contradicting the gist of the invention. As an example, although the example in which the long fiber rope 1 employs twelve strikes has been shown in the embodiments, the long fiber rope 1 is also suitably applied. It goes without saying that the same effect can be obtained even in the case of an odd number.

  The long fiber rope according to the present invention is used for mooring floating marine structures used for exploration of marine resources, etc. It is suitably applied as a rope for fisheries and fisheries such as a general rope for land.

DESCRIPTION OF SYMBOLS 1 ... Long fiber rope 2 ... Child rope 3 ... Trailer rope 3A ... Tip part 3-1 to 3-12 ... Strand 4 ... Ending child rope 4A ... Butt part 4-1 to 4-12 ... Strand 5 ... Connecting part

  The present invention is a particularly long and very thick fiber used to moor offshore structures for excavation of fuel resources such as submarine oil fields, mineral resources, methane hydrate, etc. It relates to a rope and its connection structure.

  In conventional fiber ropes, strands obtained by twisting a plurality of yarns obtained by twisting raw yarns are wound on a bobbin, and this bobbin is placed on a carrier of a braiding machine or a steelmaking machine to draw a special trajectory. The strand that is fed out while being moved is guided to the voice and is composed (see Patent Document 1).

By the way, it is an important requirement that the fiber rope employed in the field such as the ocean described above is thick and long in terms of the environment to which it is applied.
However, since the winding yield of the strands in the bobbin has a mechanical limit, the winding yield decreases as the rope diameter (strand diameter) increases. Further, the rope length is also limited to the winding yield of the strands wound on the bobbin. In other words, it was impossible to manufacture a long and long rope.

  Therefore, when long ropes were required, they were obtained by forming eyes at the ends of the finished braided rope and connecting these eyes directly or via connecting fittings. . As another means, a method is adopted in which the braids at the ends of the two ropes are loosened and the strands are alternately inserted to form the splice SS (see Patent Document 2).

  However, according to the above means, the diameter of the connecting part becomes more than double, and the weight changes, and when the rope is extended or pulled up, it is difficult to move the rope smoothly by being caught on the pulley etc. Therefore, there is a drawback that damage is easily caused and damage is easily concentrated on the connection portion.

  With the intention of improving this conventional technique, a technique as shown in Patent Document 3 has been proposed. That is, in this proposal, in the middle of the braid of the rope, the tip of the strand of the next lot is connected to the bottom of an arbitrary end strand at the end of the braided rope at the voice inlet, and this braid is guided to the voice to be braided. Continually, connecting the tip of the strand of the next rod to the other end-of-strand strands for a predetermined length, and repeatedly braiding the connected portion to the voice to obtain a long rope. It is.

Japanese Utility Model Publication No. 01-164780 JP 10-258139 A JP 2007-119933 A

  However, the technique proposed in Patent Document 3 employs a joining means in which both strands are partly polymerized when joining the tip of the strand of the next rod to the bottom of the end strand. That is, a technique is adopted in which a fiber rope formed by braiding n fiber strands (where n is an even number of 8 or more) has to have n strands plus 1 strands at the connecting portion. In other words, it should be referred to as a modification of the method of forming the splice SS, and the connecting portions of the strands are merely different in phase in the length direction of the rope.

  Therefore, although the diameter of the rope changes partially, the connecting portion and the other part cannot have the same diameter, and the rope obtained by the conventional method of forming the splice SS inevitably. It cannot be denied that similar disadvantages occur.

  Accordingly, as a result of various studies on the above-described conventional techniques, the present inventors have devised a method in which the number of strands is n even at the connecting portion when connecting the tip portion of the strand of the next rod to the bottom of the end strand. Therefore, the diameter of the connecting part of the strands is the same as the other parts and is not accompanied by an increase in the local diameter at all. Since it came to be able to provide the connection structure and the elongate fiber rope comprised with the connection structure, it proposes here.

  Therefore, the object of the present invention is to have the same number of strands at the connecting portion as the number of strands forming the rope, the diameter is the same as that of other portions, and there is no increase in local diameter at all. Another object of the present invention is to provide a fiber rope connection structure that can be elongated as a single rope of the same diameter from beginning to end, and a long fiber rope composed with this connection structure.

To achieve the above object, the connecting structure of the long fiber rope according to claim 1 of this invention is a plurality of obtained by composition of the plurality of strands of fibers (however teeth 8 more) Arbitrary terminations at the end of the braided rope at the voice entrance to wind the child rope onto the corresponding number of bobbin carriers, pull it out from each bobbin carrier, and obtain a continuous long braided rope through the voice. A connecting structure of long fiber ropes that connects the leading end of a trailing rope to the bottom of the secondary rope and braids by guiding the connecting portion to the voice, the bottom of the trailing rope and the trailing After each of the start ends of the child ropes is unwound into each strand unit with a predetermined length, half of each of the opposing strands are pulled out from the braid over the length corresponding to the unwinding length. Counterpart strands into a strand presence corresponding portions are inserted braided, the withdrawn strands portion connected by being respectively cut is formed.

  In the long fiber rope connection structure, the length of the connecting portion according to claim 1 is preferably 3 to 5 rope leads (claim 2).

  Moreover, in the connection structure of a long fiber rope, it is desirable to leave the space | interval of each connection part of Claim 1 3 or more (Claim 3).

Further, the long fiber rope of the present invention to achieve the above object, give the child rope plurality of that composition a plurality of textiles strands (but 8 or more), braided these children rope A long fiber rope having a predetermined length connecting the tip of the trailing rope to the end of the end rope, and half of each of the opposing strands are connected to each other. The other strand is inserted and braided into a portion corresponding to the presence of the strand after being pulled out, and the drawn strand is cut to form a connecting portion, and the length of the connecting portion is In the 3-5 rope leads, the interval between the connecting portions of the child ropes is set to 3 rope leads or more (Claim 4).

In the inventions according to claims 1 to 4 of the present invention, the other party is located at the corresponding portion of the strand that originally existed at both the bottom end of the end rope and the child rope of the next lot, that is, the start end of the follower rope. since the strands are braided are inserted, the diameter of the connecting portion of the child rope is only inherent strands present number of braiding the where the very children rope. In part, the suspension has a structure in which the diameter of the child rope does not increase, unlike the conventional method in which the number of strands is +1 .

Thus, the long fiber rope connection structure and the long fiber rope according to claims 1 to 4 of the present invention are the original strands that braid the child rope regardless of the diameter of the connecting portion of the child rope. Unlike the conventional method, which is only a number and partly, the number of strands plus one, the structure is such that the diameter of the child rope does not increase. Therefore, if the braid is guided by guiding the child rope having such a connecting part to the voice, the diameter is the same as other parts, and there is no increase in the local diameter at all. A long fiber rope can be obtained as a single rope having a diameter. In addition, the rope can move smoothly without being caught by a pulley, etc. without being accompanied by a change in weight, and the rope can be moved smoothly without being caught by a pulley. The connection structure of the long fiber rope and the long fiber rope can be provided.

  Further, in the device according to claim 2, by making the length of the connecting portion 3 to 5 rope leads, the connecting operation is easy, and sliding and separation of the connecting portion can be prevented, and a desired strength can be obtained. .

  Further, in the invention according to claim 3, since the interval between the connecting portions is 3 rope leads or more, the work is troublesome by simultaneously connecting a large number of strands at a time on the rope-making machine. This eliminates the need for manual labor and facilitates the production of long fiber ropes.

Furthermore, in the invention according to claim 4, to give the child the rope a plurality of that composition a plurality of textiles strands (but 8 or more), a long fiber rope braiding these children rope, At the joint where the tip of the trailing rope is connected to the bottom of the end rope by a predetermined length, half of the opposing strands are pulled out from the braid of the joint, respectively. counterpart strands into a strand presence corresponding portions are inserted braided of after, the withdrawn strands portion connected by being respectively cut is formed, a length 3-5 rope lead connecting portion, the child rope the spacing of the connecting portion of the mutual has to be more than 3 rope leads, the diameter of the connecting portion of the slave rope only a inherent strands present number of braiding the where the very children rope. In other words, partly, unlike the conventional method in which the number of strands is +1 , the diameter of the child rope does not increase, and it is substantially long as a single rope with the same diameter from the beginning to the end. Fiber rope can be obtained. Moreover, without changing the weight, the rope can be moved smoothly without being caught by a pulley when the rope is drawn out or pulled up, and there is little risk of being damaged by rubbing. Due to its strength, it has become possible to provide a long fiber rope that is difficult to cause damage over many years. Furthermore, since a conventional general fiber rope can be obtained by twisting a strand to the right and twisting the strand to the left (see FIG. 18), the strand is caused by a so-called lateral external force in a direction perpendicular to the rope core. Although it is easily understood, it is inferior in durability and may deteriorate within an early stage, the long fiber rope according to the present invention is a child rope, that is, a rope instead of a strand, because the component corresponding to the conventional strand is (Refer to FIG. 17). This lateral stress load can be strongly counteracted, has a sufficiently satisfactory strength, and can provide a high-strength long fiber rope that can sufficiently withstand long-term use.

The connection structure of the long fiber rope which concerns on this device, and the Example of a long fiber rope are shown, and it is the whole explanatory drawing of a connection part. It is the elements on larger scale of the state where the strand of the connection part was dissolved. It is a partial expansion explanatory view of the state where one strand of the follower rope was attached after the end of pulling out one strand of the end rope. Furthermore, it is the elements on larger scale of the state inserted once. It is a partial expanded explanatory view of the state inserted 4 times. It is the elements on larger scale of the state which processed the terminal by cut | disconnecting the strand by the side of the drawn end piece rope which was pulled out. It is the elements on larger scale of the state where the 2nd strand was attached. Furthermore, it is the elements on larger scale of the state inserted once. It is a partial expanded explanatory view of the state inserted 4 times. It is the elements on larger scale of the state which processed the terminal by cut | disconnecting the strand by the side of the drawn end piece rope which was pulled out. It is a partial expansion explanatory view of the state where one strand of the end child rope was attached after drawing one strand of the follower rope. Furthermore, it is the elements on larger scale of the state inserted once. It is a partial expanded explanatory view of the state inserted 4 times. It is the elements on larger scale of the state which processed the terminal by cutting the strand by the side of the rope after pulling out. It is a partially abbreviate | omitted part explanatory drawing of the steelmaking machine used for this invention. It is partial explanatory drawing which shows the relationship between a long fiber rope and a child rope, and a connection part. It is a partial enlarged drawing substitute photograph of the long fiber rope of this invention. It is a partial enlarged drawing substitute photograph of the long fiber rope of a comparative example.

  The connecting method is as follows. The child rope of the next lot, that is, the tip of the trailing child rope, is 2 to 5 times as long as the rope-lead. The lead and the number of insertions are 4 times), and almost half of the opposing strands of both the bottom end of the end rope and the start end of the rear end rope are 2-5 of the rope-lead. The strand is pulled out from the braid with a length of about twice, and the strand of the other party is inserted and braided into a portion corresponding to the presence of the strand after being pulled out. Therefore, six of the twelve ends of the end rope and the start end of the trailing rope are inserted into the six ends, and six are removed. Unlike conventional wraps and splices, the connecting part does not overlap the strands of the end of the end rope and the starting end of the trailing rope, so the rope diameter of the connecting part is other than the connecting part. As a single rope with the same diameter from the beginning to the end, it is theoretically infinite, and practically 500 ~ A 2000m long fiber rope can be made.

Hereinafter, the connection structure of the long fiber rope which concerns on this invention is demonstrated based on description of FIGS.
The structure shown in the figure shows a case where the present invention is applied to a 12 twist rope.
As shown in FIG. 15, the long fiber rope 1 shown here (see FIG. 17) is obtained by winding twelve child ropes 2 on twelve bobbin carriers 20 and passing them through voices 21. Specifically, a known 12-ply steel rope is used. Since the details of the structure are also known, an example is displayed by assigning figure numbers to the main components. In the figure, 22 is a string making machine body, 21 is the voice arranged above the center of the string making machine, 23 is a capstan mechanism, 24 is a tension roller, and 25 is a take-up roller.

  When the motor is driven, the bobbin carrier 20 rotates by the operation of each horn disk 27 fixed to the rotating shaft 26. Each saddle is driven by the rotational movement of the horn disk 27, and the bobbin 28 mounted on each bobbin carrier 20 rotates at the base portion by feeding out the strand, and the strand is guided and composed by the voice 21 at the center of the apparatus. It becomes a twisted rope.

  The child rope 2 is composed of, for example, eight yarns made by twisting eight synthetic filament multifilament yarns 1260 denier to form a yarn, and twelve twisted yarns. Further, the long fiber rope 1 is composed by twisting 12 pieces of the child ropes 2 together.

  In addition, the material of the child rope 2 is not particularly limited, and is appropriately adopted in consideration of the place and conditions of use, but general synthetic fibers such as nylon, polyester, tetron, polypropylene, polyester, etc. Other examples include highly functional fibers such as wholly aromatic polyamide fibers, wholly aromatic polyester fibers, polyparaphenylene benzobisoxazole fibers, polyvinyl alcohol fibers, and ultrahigh molecular weight polyethylene fibers. Among these, ultra high molecular weight polyethylene fibers are preferable. The above highly functional fibers can be produced by a known method or a method equivalent thereto.

  The method of making the long fiber rope 1 is the same as in the present invention. When the composition of one lot is over, the bobbin 28 in which the child rope of the next lot, that is, the trailing rope 3 is fully wound, is replaced. It replaces with the carrier 20, and the trailing rope 3 is pulled out above the bobbin carrier 20, and the leading end 3 </ b> A of the trailing rope 3 is suspended from the trailing end of the long fiber rope 2 as shown in FIGS. The long fiber rope 1 is obtained by connecting the bottom end 4A of the end rope 4 to be connected to form the connecting portion 5.

However, the end portion 3A of the trailing rope 3 is connected to the bottom portion 4A of the end rope 4 to form the connecting portion 5. The structure of the connecting portion 5 has a feature of the present invention.
That is, as shown in FIG. 1, six of the 12 strands of the tip portion 3A of the follower rope 3 and the tail portion 4A of the end piece rope 4 are inserted into the opposite rope. At this time, the strands to be inserted are in a point where six strands are sequentially removed corresponding to the insertion of the counterpart strand. That is, 6 out of 12 are inserted and 6 are removed. As a result, six of the unraveled part on the end of the end rope are replaced with six of the follower rope 3, and on the contrary, six of the follower rope 3 are replaced with six of the end of the end rope 4. The thickness remains one state.

Hereinafter, characteristic points of the structure of the connecting portion 5 will be described with reference to FIGS.
First, as shown in FIG. 2, the tip 3A of the trailing rope 3 (on the right side on the paper) and the tail 4A of the trailing rope 4 (on the left side on the paper) are untwisted over a predetermined length, respectively. Divided into 12 strands 3-1 to 3-12 and 4-1 to 4-12. The predetermined length is appropriately selected based on the entanglement with the strength of the long fiber rope 1, but is preferably about 2 to 5 rope leads. In terms of the number of insertions, it is ideally 12 times or more, but considering the efficiency and strength of splicing work, the number of insertions is preferably at least 6 times. If it is too long, it takes time to create the connecting portion 5. On the other hand, if it is too short, it slips and separates, and the strength becomes weak. As a result of various experiments, it is judged that the above 3-5 rope lead is appropriate.

  Next, of the twelve strands of the distal end portion 3A of the succeeding child rope 3 and the tail portion 4A of the end-finishing rope 4, the distal end portion 3A of the succeeding child rope 3 and the end-ending rope 4 The corresponding strands 3-1 and 4-1 corresponding to the bottom 4 </ b> A are selected.

  Next, as shown in FIG. 3, the selected strand 4-1 of the end rope 4 is slightly pulled out, and the strand 3-1 of the follower rope 3 is inserted into the trajectory after the drawing.

  Furthermore, as shown in FIG. 4, the selected strand 4-1 of the end rope 4 is further pulled out, and the selected strand 3-1 of the follower rope 3 is pulled out accordingly. The end rope 4 is inserted after the strand 4-1 in order.

  By repeating the above operation, as shown in FIG. 5, the strand 4-1 of the end rope 4 is pulled out to a predetermined position, and then the strand 3-1 of the follower rope 3 is inserted, Finally, the tip of the strand 3-1 of the trailing rope 3 is finished and pulled out of the trailing rope 4.

  Further, in the next procedure, as shown in FIG. 6, the leading end portion of the strand 3-1 of the trailing rope 3 is further inserted into the trailing rope 4. The strand 4-1 of the drawn end rope 4 is cut so as not to overlap with the tip of the strand 3-1 of the trailing rope 3. That is, the insertion is completed by abutting the rear end of the strand 4-1 of the drawn end rope 4 and the front end of the strand 3-1 of the follower rope 3.

  Next, of the twelve strands of the distal end 3A of the succeeding rope 3 and the tail 4A of the end 4 of the unrolled rope, the tip 3A of the succeeding rope 3 and the end 4 The next corresponding strands 3-2 and 4-2 corresponding to the bottom portion 4A are selected, and as shown in FIG. 7, the strands 4-2 of the selected end-to-end rope 4 are slightly pulled out, and the strands are pulled out. The strand 3-2 of the follower rope 3 is inserted into the rear trajectory.

  Further, as shown in FIG. 8, the selected strand 4-2 of the end rope 4 is further pulled out, and the selected strand 3-2 of the follower rope 3 is pulled out accordingly. Insert sequentially after the strand 4-2 of the end rope 4.

  By repeating the above operation, as shown in FIG. 9, the strand 4-2 of the end rope 4 is pulled out to a predetermined position, and then the strand 3-2 of the follower rope 3 is inserted, Finally, the tip of the strand 3-2 of the trailing rope 3 is finished and pulled out of the trailing rope 4.

  Further, in the next procedure, as shown in FIG. 10, the tip of the strand 3-2 of the trailing rope 3 is further inserted into the trailing rope 4. The strand 4-2 of the drawn end rope 4 is cut so as not to overlap with the tip of the strand 3-2 of the trailing rope 3. That is, the insertion is completed by causing the rear end of the strand 4-2 of the drawn end rope 4 to abut the front end of the strand 3-2 of the follower rope 3.

  The above insertion operation is similarly performed on the remaining four pieces 3-3 to 3-6 and 4-3 to 4-6 of the follower rope 3 and the end piece rope 4, respectively. The six strands of the end are finished and replaced with the six strands of the child rope 4.

  For convenience of explanation, only the work progress in a state where two strands are inserted is shown in the drawing, and the illustration of the progress of the insertion work of four strands is omitted.

Next, on the contrary, the work of inserting the remaining six strands 4-7 to 4-12 of the end piece rope 4 into the trailing piece rope 3 is started.
One strand 4-7 of the remaining six ends of the end rope 4 and one strand 3-7 of the remaining six rope ropes 3 are selected, as shown in FIG. Then, the selected strand 3-7 of the trailing rope 3 is slightly pulled out, and the strand 4-7 of the trailing rope 4 is inserted into the trajectory after the pulling.

  Further, as shown in FIG. 12, after the selected strand 3-7 of the trailing rope 3 is further pulled out, and the selected strand 4-7 of the end rope 4 is pulled out accordingly. It inserts sequentially after the strand 3-7 of the Yoko rope 3.

  By repeating the above operation, as shown in FIG. 13, while pulling out the strand 3-7 of the trailing rope 3 to a predetermined position, and then inserting the strand 4-7 of the trailing rope 4; Finally, the rear end of the strand 4-7 of the end rope 4 is pulled out of the rear rope 3.

  Further, in the next procedure, as shown in FIG. 14, the tip of the strand 4-7 of the end piece rope 4 is further inserted into the follower rope 3. The drawn strand 3-7 of the trailing rope 3 is cut so as not to overlap with the rear end of the strand 4-7 of the terminating rope 4. That is, the insertion is completed by abutting the rear end of the strand 4-1 of the drawn end rope 4 and the front end of the strand 3-1 of the follower rope 3.

  The above insertion operation is performed in the same manner for the remaining five pieces 3-8 to 12 and 4-8 to 4-12 of the follower rope 3 and the end piece rope 4, respectively. The strand of the book ends and the six strands of the child rope 4 are replaced.

  The above insertion work is performed manually by a person.

  In this way, by connecting the tip portion 3A of the follower rope 3 to the bottom portion 4A of the end piece rope 4, the connecting portion 5 can be used as shown in FIG. On the other hand, 6 on the 4th side are replaced with 6 of the follower rope 3, and on the contrary, 6 of the follower rope 3 are replaced with 6 on the end of the child rope 4, and the thickness remains one state.

  When the rope rope 2 having finished connecting the terminals as described above is continuously operated, the bobbin 28 is rotated at the base portion by the extension of the rope rope 2, the rope rope 2 is guided, and the voice of the device center 21 and becomes a 12 twist rope as shown in FIGS.

  The important point here is to avoid concentrating the terminal connecting portions of the twelve child ropes 2, that is, the connecting portion 5 at one place in the length direction of the long fiber rope 1. In general, the total length of the child rope 2 is not different for each bobbin 28. Therefore, the composition end of the child rope 2 is almost the same for all the bobbins 28, but the length of each of the child ropes 2 is long. It is important to make the position of the connecting portion 5 different in the length direction of the fiber rope from the viewpoint of increasing the rope strength and performing efficient connecting work. The distance between the positions is desirably 3 to 7 rope leads, and preferably about 5 rope leads.

  For convenience of explanation, each figure shows a state in which a space is provided between the distal end portion 3A of the trailing rope 3 and the bottom portion 4A of the trailing rope 4; Then, there is almost no gap between them, and the joining work is performed with the two being in close contact.

  Therefore, the number of strands at the connecting portion is the same as the number of strands forming the rope, the diameter is the same as other portions, and there is no increase in the local diameter at all. The rope can be long as a single rope, and it does not change in weight. The rope can move smoothly without being caught by a pulley when it is pulled out or pulled up, and it can be damaged by rubbing. It has become possible to provide a long fiber rope that is less likely to cause damage over many years.

Next, the specific example of the long fiber rope of this invention is shown.
Nylon fiber multifilament yarn 1260 denier 8 twisted yarns were formed into a set of 8 yarns, and 12 yarns were twisted to produce a child rope 2. Twelve of these sub ropes 2 are braided on a vertical rope-making machine, and on the way, a splice is formed by inserting four times into each sub rope 2 and a long fiber having a diameter of 50 mm and a total number of multifilaments of 9216. A rope 1 was obtained.

  Next, by the same manufacturing method as the above-described long fiber rope 1, the number of insertions was increased to 5, 6, 9, and 12 to prepare four pieces.

  Next, for comparison, a rope was prepared by a conventional method so that the total number of multifilaments was 9216 as shown in the drawing substitute photograph of FIG. That is, four yarns made by twisting eight 1260 denier nylon filaments are combined to form a yarn, and 24 strands are twisted to form a strand. The ropes having a diameter of 50 mm were obtained by arranging them in pairs and twisting six of them in a right-hand twist and the other six pairs in a left-hand twist.

  From the results of the strength test of both ropes, the breaking strength (K / N) is 628 in the above-mentioned four-turn long fiber rope 1 according to the present plan, whereas it is 648 in the comparative rope obtained by the conventional method. The strength utilization rate (g / D) of the long fiber rope 1 according to the present invention was 5.56, whereas the rope of the comparative example showed 5.98. In addition, in all of the four examples of the present invention with 5 or more insertions, the breaking strength and strength utilization rate were higher than in the case of 4 insertions.

In view of the above results, the decrease in strength due to the long fiber rope 1 according to the present invention was within a negligible range and was satisfactory.
Accordingly, it is understood that the larger the number of insertions in the connecting portion 5 is, the smaller the difference between the above numerical values is, but ideally, 12 times and at least 6 times or more are desirable.

  Each embodiment described above is not necessarily limited to the structure shown in the drawings, and the individual structures and shapes shown can be combined with each other or used within a scope not contradicting the gist of the invention. As an example, although the example in which the long fiber rope 1 employs twelve strikes has been shown in the embodiments, the long fiber rope 1 is also suitably applied. It goes without saying that the same effect can be obtained even in the case of an odd number.

  The long fiber rope according to the present invention is used for mooring floating marine structures used for exploration of marine resources, etc. It is suitably applied as a rope for fisheries and fisheries such as a general rope for land.

DESCRIPTION OF SYMBOLS 1 ... Long fiber rope 2 ... Child rope 3 ... Trailer rope 3A ... Tip part 3-1 to 3-12 ... Strand 4 ... Ending child rope 4A ... Butt part 4-1 to 4-12 ... Strand 5 ... Connecting part

Claims (4)

  N strands obtained by composing n fiber strands (where N is an even number of 8 or more) are wound on a plurality of bobbin carriers, pulled out from each bobbin carrier, and composed through a voice. In order to obtain a continuous long braided rope, the tip of the trailing rope is connected to the bottom of the end of the terminating rope at the end of the braided rope at the voice entrance, and this joint is led to the voice. A long fiber rope connecting structure for braiding, and each of the tail end of the end rope and the start end of the follower rope is unraveled into a unit of each strand with a predetermined length, and then both phases Half of the opposing strands are each pulled out from the braid over the length corresponding to the unwinding length, and the other strand is inserted and braided into the portion corresponding to the presence of the strand after being pulled out. Connection structure of the long fiber ropes, characterized in that the strand portions connected by being respectively cut is formed.   The long fiber rope connection structure according to claim 1 or 2, wherein the length of the connecting portion is 3 to 5 rope leads.   The long fiber rope connection structure according to any one of claims 1 and 2, wherein each connecting portion is spaced by three or more rope leads.   N child ropes composed of n fiber strands are obtained, and this is a long fiber rope braided with the N child ropes. In the connecting part connected by the length, half of the strands that oppose each other are pulled out from the braid of the connecting part, respectively, and the strand of the other party is inserted and braided into the corresponding portion of the strand after the drawing, Each of the drawn strands is cut to form a connecting portion, the length of the connecting portion is 3 to 5 rope leads, and the distance between the connecting portions of the N child ropes is 3 rope leads or more. A long fiber rope characterized by that.