JPH0816485B2 - Method for fixing terminal of cableway cable and fixture - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing method for fixing and holding a cableway cable used in elevators, cables, cranes, suspension bridges, and the like, in particular, a terminal of a carbon cable, and a fixing tool therefor.

[0002]

2. Description of the Related Art Conventionally, as a means for fixing and holding the end portion of this kind of cableway cable, for example, as shown in FIG. 6, of a receiving member (11) having one end held by a fixing portion by a shaft portion (10). Pass the end of the cable (13) through the wedge-shaped rewind part (12) and invert it into a loop, and clamp the loop-shaped knot with the fastening tool (14), or as shown in FIG. Alternatively, there is a method in which the cable (16) is rewound in a loop shape around the shaft portion (15) of the fixed portion, and the loop-shaped knotted portion is fastened and fixed by the fastening tool (17).

However, since this type of cableway cable is usually formed by twisting a large number of steel wires and carbon wires together, it has a high hardness, and therefore the work of bending the end portion into a small loop is very complicated. is there. This becomes a particular problem when the cableway cable is made of carbon wire having high hardness. In addition, since the above-mentioned tightening tool simply presses the cable from above and below, there is a possibility that the cable may be pulled out unless it is strongly tightened. However, if this cable is strongly tightened with a tightening tool, there is a problem in that the tightened portion is locally damaged, the strength is deteriorated, and the service life is shortened. Further, when tightening the tightening tool, a plurality of bolts and nuts attached to the tightening tool are rotated to a predetermined torque value, which is very troublesome.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a plurality of locations on the outer peripheral surface of a tube body through which a cable is inserted can be firmly and quickly fixed by a simple operation of compressing with a compression tool. The main object of the present invention is to provide a fixing method and a fixing tool capable of reliably compressing and holding a cable for a predetermined length while maintaining a straight line shape without damaging the cable.

[0005]

In order to achieve the above object, the present invention takes the following technical means. That is, in the method of fixing the cableway cable end according to the present invention, a metal outer tube body (1) having a predetermined length, and tightly fitted and fixed to the inner surface of the outer tube body (1) and A laminated tube body (3) is formed by a metal inner tube body (2) having a through hole (2a) for inserting a cable in the shaft core, and a through hole (2a) of the inner tube (2). Is provided with a retaining screw tooth (2b), and the outer and inner tube bodies (1) and (2) are made of a metal material that is plastically deformable by compression, and the inner tube body (2) is A tubular fixture made of a softer material than the outer tube body (1)
(A) is prepared, the cable (B) is inserted through this fixture (A), and then the outer tube body (1) is compressed at a plurality of locations on the outer peripheral surface at predetermined intervals with a constant pressure from the surroundings. Cable (B)
Is compressed and held.

Further, in the fixture according to the present invention,
A metal outer tube body (1) having a predetermined length, and a metal that is tightly fitted and fixed to the inner surface of the outer tube body (1) and has a through hole (2a) for inserting a cable in the shaft core portion. A laminated tube body (3) is formed with the manufactured inner tube body (2), and a through-hole (2a) of the inner tube (2) is provided with retaining screw teeth (2b), and The outer and inner tube bodies (1) and (2) are made of a metal material that is plastically deformable by compression, and the inner tube body (2) is the outer tube body (1).
The structure is made of a softer material.

[0007]

[Function] After the cable (B) is inserted through the fixture (A) configured as described above, a plurality of locations on the outer peripheral surface of the outer tube body (1) are spaced at predetermined intervals as shown in FIG. Compress from the surroundings with the upper and lower compression presses (C). Of this compression,
The strain of the internal pressure of the outer tube bodies (1) and (2) is absorbed by the non-compressed portion (PN) as shown in FIG.
The compression force of (P) can be increased, and the strong compression part (P) and non-compression part (PN) are alternately formed to form a cable.
It is possible to enhance the compression holding force of (B).
Incidentally, the compression means is not limited to the one simultaneously compressed by a compression press (C) integrally formed with a plurality of compression portions as shown in the figure, and a plurality of compression points are individually compressed with a constant pressure by a small compression press. You may do it.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below based on an embodiment shown in the drawings. 1 to 4 show an embodiment of a fixture according to the present invention. The fixture (A) includes a metal outer tube body (1) having a predetermined length, and the outer tube. A laminated tube body (3) is formed by the metal inner tube body (2) tightly fitted and fixed to the inner surface of the body (1). The inner diameter of the through hole (2a) of the inner tube body (2) is formed so that the cable (B) to be fixed can be inserted without a gap, and the inner peripheral surface of the through hole (2a) has a retaining screw tooth.
(2b) is provided.

Further, the outer and inner tube bodies (1) and (2) are made of a metal material which is plastically deformable by compression, and the inner tube body (2) is made of a material softer than the outer tube body (1). There is. In an embodiment, the outer tube body
(1) is made of copper, and the inner tube body (2) is made of aluminum.

Further, in the embodiment shown in the drawings, in order to prevent the inner tube body (2) from coming off, a stopper is provided on the inner surface of the end of the outer tube body (1) on the cable insertion direction side. The nut (4) is screwed on. Instead of the nut (4), one end of the outer tube body (1) may be caulked inward to form a stopper (1b) as shown in FIG.

Further, in the above embodiment, the through hole (2a) of the inner tube body (2) is formed as a gentle taper hole for about 6 minutes so that the end portion on the cable insertion side has a small diameter. As a result, when the cable (B) is compressed, the compressive force increases from the insertion tip part to the rear part of the fixture to mitigate that the cable (B) receives a large load locally at the fixture insertion port. ing.

The following data are the test results of the present invention conducted by the present inventor, and very favorable results were obtained.

[0013]

[Table 1]

[0014]

[Table 2]

The above-mentioned sample is compressed by a compression force of 50 tons with a width of 38 mm in each compression portion by the above-mentioned means to attach the cable (B) to the fixture (A), and the fixture (A) is attached. When fixed to a tensile tester and a tensile load was applied to the cable (B), the average value of 10 was actually 12,510 Kg.
A very good result of f was obtained. Also, 1 in 60 mm
As a result of performing the same test by compressing at three places with a compressive force of 00 tons, a result of 10 pieces having an average value of 11,745 Kgf was obtained.

Although the embodiments considered to be typical of the present invention have been described above, the present invention is not necessarily limited to only the structures of these embodiments and has the constitutional requirements and achieves the object of the present invention. The present invention can be appropriately modified and carried out within the range in which the following effects are exhibited.

[0017]

Since the present invention is configured as described above, when a plurality of locations on the outer peripheral surface of the outer tube body excluding the annular groove are compressed by upper and lower compression presses, the internal , The strain of the internal pressure of the outer tube body is absorbed by the non-compressed portion, that is, the portion provided with the annular groove, whereby the compressive force of the compressed portion can be increased, and the strong compressed portion and the non-compressed portion alternate. It can be formed to increase the compression retention force of the cable, and in addition, by simply inserting the cable into the fixture and compressing the outer peripheral surface of the tube body, you can reliably and quickly at the set compression value over the specified length. The cable can be fixed and the end of the cable can be compressed and held in a straight shape without being bent in a loop shape. Also can be easily fixed without damaging a wood, its construction can be provided at low cost because those constituted by only the inner and outer tubular body, there are various significant effects such addition.

[Brief description of drawings]

FIG. 1 is an exploded perspective view, partly in section, of a fixture according to the present invention.

FIG. 2 is a sectional view of the fixture.

FIG. 3 is a cross-sectional view showing a method of fixing a fixture according to the present invention.

FIG. 4 is an enlarged cross-sectional view showing a part of a cable and a fixture fixed by the present invention.

FIG. 5 shows still another embodiment of the fixture according to the present invention 1
FIG.

FIG. 6 is a sectional view showing a conventional fixing means.

FIG. 7 is a cross-sectional view showing another example of conventional fixing means.

[Explanation of symbols]

 (1) Outer tube body (2) Inner tube body (2a) Through hole in inner tube body (2b) Screw teeth for retaining (3) Stacked tube body (A) Fixing tool (B) Cable (C) Compression press

Claims (2)

[Claims] 1. A metal outer tube body (1) having a predetermined length, and a through hole (2a) for tightly fitting and fixing the outer tube body (1) on the inner surface of the outer tube body (1) and inserting a cable into the shaft core portion. ) With a metal inner tube body (2) and a laminated tube body (3)
Is formed, the through hole (2a) of the inner tube (2)
Is provided with a retaining screw tooth (2b), and the outer and inner tube bodies (1) and (2) are made of a metal material that is plastically deformable by compression, and the inner tube body (2) is Prepare a tubular fixture (A) made of a softer material than the outer tube body (1), and connect the cable to this fixture (A).
After inserting (B), a cableway characterized by compressing and holding the cable (B) by compressing a plurality of places on the outer peripheral surface of the outer tube body (1) at predetermined intervals from the surroundings with a constant pressure. How to fix the cable end. 2. A metal outer tube body (1) having a predetermined length, and a through hole (2a) for tightly fitting and fixing the inner tube surface of the outer tube body (1) and for inserting a cable in the shaft core portion. ) With a metal inner tube body (2) and a laminated tube body (3)
Is formed, the through hole (2a) of the inner tube (2)
Is provided with a retaining screw tooth (2b), and the outer and inner tube bodies (1) and (2) are made of a metal material that is plastically deformable by compression, and the inner tube body (2) is A terminal fixing device for a cableway cable which is made of a material softer than the outer tube body (1).