JP3901664B2 - Rope connection method and guide jig used for the connection method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rope composed of a core rope and a plurality of strands, in particular, a wire rope connection method and a guide jig used in the connection method.
[0002]
[Prior art]
Conventionally, as a method for connecting this type of wire rope, for example, there is a method in which a new rope is connected to an end of an existing rope when the main rope of an elevator is replaced, and the existing rope is replaced with a new rope while pulling. In such a conventional wire rope connection method, a rope detachment prevention is usually provided on a pulley or the like on which an elevator rope is hung, and an existing rope end and a new gap are provided between the rope detachment prevention and the pulley. In order to pass the connecting portion at the end of the rope, the rope connection is performed so that the diameter of the rope connecting portion is substantially the same as the rope diameter.
[0003]
As an example of such a rope connection method, two uncut strands are formed by cutting and removing only two strands of a predetermined length from the end of the new rope and removing the other strands. After cutting and removing two strands of a predetermined length from the ends, two strand removal grooves are formed, the ends of these new ropes and existing ropes are butted and the uncut strands are removed. There has been proposed one that is wound around and connected to a groove (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-4-327283 (paragraph number 0026, FIG. 5)
[0005]
[Problems to be solved by the invention]
By the way, in the conventional rope connection method described above, the strand twisted with the steel wire has a twisted strand, and when the strand left uncut at one rope end is wound into the strand removing groove at the other rope end, Since it is necessary to simultaneously perform the operation of winding the uncut strand into the strand removal groove while holding both ropes so that they do not swing, if you are unfamiliar with this operation, a bulge step will occur at the rope joint etc. Therefore, a plurality of workers are required to perform the rope connecting work, and considerable time and skill are required.
[0006]
The present invention has been made in view of the actual situation in the prior art as described above, and the object thereof is used in a rope connecting method and a connecting method thereof in which a rope can be easily connected without requiring skilled work. It is to provide a guide jig.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present invention is to cut and remove a part of a plurality of first strands twisted around the first core rope by a predetermined length. , A step of forming a strand removing groove on an outer periphery of an end portion of the first rope composed of the first core rope and the first strand, and a part of the plurality of second strands twisted around the second core rope Is left by a predetermined length, and the other second strand and the second core rope are cut and removed, thereby forming an uncut strand at the end of the second rope composed of the second core rope and the second strand. And abut the end surface of the second rope on which the uncut strand is formed on the end surface of the first rope on which the strand removing groove is formed, and then winding the uncut strand on the strand removing groove In the rope connecting method for connecting the first rope and the second rope to each other, after winding the uncut strand of the second rope around the strand removing groove of the first rope, the uncut strand The outer periphery in the vicinity of the tip of the first rope is clamped by a guide jig, and the guide jig is moved while rotating in the direction of the end face butting portion of the first rope and the second rope. It was set as the structure which removes the strand twist of a connection part and ensures a rope shape.
[0008]
Thus, in the invention according to claim 1, when the uncut strand of the second rope is wound around the strand removing groove of the first rope, the first rope and the second rope are guided from the tip of the uncut strand using the guide jig. It becomes easy to introduce the uncut strand into the strand removing groove by moving it while rotating in the direction of the butt end. Thereby, a rope connection part can be prepared easily and a rope connection can be performed easily, without requiring an expert work.
[0009]
The invention according to claim 2 of the present invention is a pair of guide jigs used in the rope connecting method according to claim 1, each of which is formed in a semi-cylindrical shape and sandwiches the outer periphery in the vicinity of the tip portion of the uncut strand. And a hinge part that connects one end of the pair of sandwiching parts so as to be openable and closable, and a fastening part that fastens each other end of the pair of sandwiching parts.
[0010]
In the invention according to claim 2 constructed as described above, the pair of sandwiching portions are mounted in the vicinity of the end portion of the strand, leaving the sandwiching portions in a state where the pair of sandwiching portions are opened with the hinge portion of the guide jig as a support shaft. After closing the outer periphery of the strand in the vicinity of the end of the uncut strand, a predetermined gripping force is secured by fastening each other end of the sandwiched portion to each other with a fastening portion. As a result, the guide jig can be easily attached to and detached from the rope, so that the rope can be easily connected also in this respect.
[0011]
Further, the invention according to claim 3 of the present invention is the guide jig used in the rope connecting method according to claim 1, each of which is formed in a semi-cylindrical shape and sandwiches the outer periphery in the vicinity of the tip portion of the uncut strand. And a fastening portion that fastens both ends of the pair of sandwiching portions to each other.
[0012]
In the invention according to claim 2 configured as described above, the clamped portion of the guide jig is released and the pair of sandwiched portions are separated, and the sandwiched portions are left uncut and mounted in the vicinity of the tip of the strand. After closing the pinching portion and pinching the outer periphery in the vicinity of the tip portion of the uncut strand, both ends of the pinching portion are fastened to each other by a fastening portion to ensure a predetermined gripping force. As a result, the guide jig can be easily attached to and detached from the rope, so that the rope can be easily connected also in this respect.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
1 is a perspective view illustrating a rope connecting method according to an embodiment of the present invention, FIG. 2 is a cross-sectional view illustrating the rope connecting method of the present embodiment, and FIG. 3 is a guide used in the rope connecting method of the present embodiment. FIG. 4 is a perspective view illustrating a process of forming uncut strands and strand removing grooves.
[0015]
A guide jig 1 of the present embodiment shown in FIG. 1 includes sandwiching portions 2a and 2b each formed in a semi-cylindrical shape, and a hinge portion 3 that connects each end of the sandwiching portions 2a and 2b so as to be openable and closable. It consists of fastening parts 4a, 4b that fasten the other ends of the sandwiching parts 2a, 2b and bolts 5 that fasten these fastening parts 4a, 4b to each other.
[0016]
The first rope 6 shown in FIG. 4 includes a first core wire 7 and eight first strands 8 twisted around the first core wire 7. Similarly, the second rope 10 is illustrated in the figure. The second core wire is composed of eight second strands 11 twisted around the second core wire.
[0017]
And in the rope connection method of this embodiment, as shown in FIG. 4, first by cutting and removing two of the eight first strands 8 at the end of the first rope 6 by a predetermined length. The strand removal grooves 6a and 6b are formed on the outer periphery of the end of the first rope 6, and only two of the eight second strands 11 at the end of the second rope 10 are left for a predetermined length. By cutting and removing the two strands 11 and the second core rope, uncut strands 11 a and 11 b are formed at the end of the second rope 10. Next, after the end surface of the second rope 10 with the uncut strands 11a and 11b is abutted against the end surface of the first rope 6 with the first strand removal grooves 6a and 6b formed, the two strands 11a and 11b The strands 11a and 11b are wound around the strand removal grooves 6a and 6b, respectively, in a state where the positions are aligned so as to engage with the strand removal grooves 6a and 6b, respectively.
[0018]
Thus, when the uncut strands 11a and 11b of the second rope 10 are wound around the strand removing grooves 6a and 6b of the first rope 6, in this state, the uncut strands 11a and 11b are removed depending on the position of the butt end. Since the entire strand does not fit in the grooves 6a and 6b, the winding is not uniform, and the connecting portion of the first rope 6 and the second rope 10 is swollen, as shown in FIG. Then, the strand twist of the connecting portion of the first rope 6 and the second rope 10 is removed using the guide jig 1 to secure the rope shape. At this time, the pair of sandwiching portions 2a and 2b are opened with the hinge portion 3 as a support shaft, and these sandwiching portions 2a and 2b are left uncut and attached to the vicinity of the distal end portions of the strands 11a and 11b, as shown in FIG. After the portions 2a and 2b are closed and left uncut, the outer periphery in the vicinity of the ends of the strands 11a and 11b is sandwiched, and then the fastening portions 4a and 4b are fastened with the bolts 5 to ensure a predetermined gripping force. Next, in this state, the guide jig 1 is moved while rotating in the direction of the end butting portion of the first rope 6 and the second rope 10, thereby forcing the strands 11a and 11b to remain in the strand removing grooves 6a and 6b. Thus, the winding is made uniform, and the strand twist of the connecting portion of the first rope 6 and the second rope 10 is removed.
[0019]
Next, after fixing the state by winding vinyl tape or the like from the uncut strands 11a and 11b toward the butting direction of the first rope 6 and the second rope 10, the bolt 5 of the guide jig 1 is removed and sandwiched. The rope connecting operation is completed by opening the portions 2a and 2b, removing the guide jig 1 from the first rope 6, and winding all the connecting portions with vinyl tape or the like.
[0020]
In the embodiment thus configured, after the end surface of the second rope 10 is abutted against the end surface of the first rope 6, the second rope 10 is inserted into the strand removing grooves 6 a and 6 b of the first rope 6 using the guide jig 1. Since the uncut strands 11a and 11b can be easily introduced, the connecting portions of the ropes 6 and 10 can be easily prepared, and the ropes 6 and 10 can be easily connected without requiring skilled work.
[0021]
Moreover, in this embodiment, since a pair of clamping part 2a, 2b can be opened and closed, the guide jig 1 can be easily attached or detached to the ropes 6 and 10, and also in this respect, the rope 6, Ten connections can be made.
[0022]
In the above embodiment, the hinge portion 3 is provided on one side of the sandwiching portions 2a and 2b so that one end can be opened and closed. However, the fastening portions are provided on both sides of the sandwiching portions 2a and 2b so that they can be divided. Has the same effect.
[0023]
Furthermore, in the said embodiment, although the case where the strand 8 of the 1st rope 6 and the strand 11 of the 2nd rope 10 were each 8 was illustrated, other numbers may be sufficient if it is a multiple strand, Although the case where two of the strands 8 of the first rope 6 are cut is illustrated, other numbers may be used instead of two.
[0024]
【The invention's effect】
As described above, in the invention according to claim 1 of the present invention, when the uncut strand of the second rope is wound around the strand removing groove of the first rope, the uncut strand is left in the strand removing groove using a guide jig. Since it becomes easy to introduce, the rope connection portion can be easily prepared, and the rope connection can be easily performed without requiring skilled work. Therefore, there is an effect that the efficiency of the rope connection work can be improved.
[0025]
Further, in the invention according to claim 2 of the present invention, since the sandwiching part of the guide jig can be opened and closed, the guide jig can be easily attached to and detached from the rope. There is an effect that can be done.
[0026]
In the invention according to claim 3 of the present invention, since the sandwiching portion of the guide jig can be divided, the guide jig can be easily attached to and detached from the rope. There is an effect that can be done.
[Brief description of the drawings]
FIG. 1 is a perspective view for explaining a rope connecting method according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view illustrating a rope connection method according to the present embodiment.
FIG. 3 is a perspective view showing a guide jig used in the present embodiment.
FIG. 4 is a perspective view showing a state in which uncut strands and strand removal grooves are formed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Guide jig 2a, 2b Clamping part 6 1st rope 6 1st strand 6a, 6b Strand removal groove | channel 10 2nd rope 11 2nd strand 11a, 11b Uncut strand

Claims (3)

The end of the first rope composed of the first core rope and the first strand by cutting and removing a part of the plurality of first strands twisted around the first core rope by a predetermined length. A step of forming a strand removing groove on the outer periphery of the portion, and a part of the plurality of second strands twisted around the second core rope, leaving a predetermined length, and the other second strand and the second core rope. By cutting and removing, forming the uncut strand at the end of the second rope composed of the second core rope and the second strand;
Wrapping the uncut strand around the strand removal groove after abutting the end surface of the second rope with the uncut strand formed on the end surface of the first rope from which the strand removal groove is formed. In the rope connection method for connecting the first rope and the second rope to each other,
After winding the uncut strand of the second rope around the strand removing groove of the first rope, the outer periphery in the vicinity of the tip of the uncut strand is sandwiched by a guide jig, and the guide jig is attached to the first rope and A rope characterized by securing the rope shape by removing the strand twist of the connecting portion of the first rope and the second rope by moving while rotating in the direction of the end face butting portion of the second rope. Connection method. In the guide jig used for the rope connection method according to claim 1,
Each of the pair of sandwiching portions formed in a semi-cylindrical shape, a pair of sandwiching portions sandwiching the outer periphery in the vicinity of the tip portion of the uncut strand, a hinge portion that connects one end of the pair of sandwiching portions so as to be openable and closable, and the pair of sandwiching portions A guide jig comprising a fastening portion for fastening the other end. In the guide jig used for the rope connection method according to claim 1,
Each guide is formed in a semi-cylindrical shape, and includes a pair of sandwiching portions that sandwich the outer periphery in the vicinity of the tip portion of the uncut strand, and a fastening portion that connects both ends of the pair of sandwiching portions to each other. jig.

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