JPS6121628Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wire rope fastening fitting used for fixing the end eye portion of a wire rope and connecting wire ropes to each other.

Conventionally, wire clips or eye-shaped clamps have been used to secure the terminal eyes of wire ropes and connect wire ropes together, but wire clips require time and effort to install and are difficult to tighten once they have been tightened. Since the force decreases over time, there is a risk that the wire rope may come off due to tension fluctuations after installation, and eye-shaped clamps require special machinery to process, and therefore cannot be fabricated on-site. Both had various drawbacks, such as the inability to change the length after finishing, and were inferior in practicality.

The present invention eliminates such drawbacks, and provides a wire rope fastening fitting that can easily fix the terminal eye and connect wire ropes together on site, and that can sufficiently handle fluctuations in wire rope tension. It's something you're trying to gain.

The feature of the present invention is that it consists of a cylindrical body through which at least two wire ropes are inserted, and a pair of chucks interposed between adjacent wire ropes in the cylindrical body. are inserted into the cylindrical body from opposite directions with one side of the chuck in contact with the other and the opposite side in contact with the wire rope, and one side of the chuck that contacts the other has a tapered surface. The tapered surface is provided with serrated unidirectional protrusions, and the surface of the chuck that contacts the wire rope is a concave curved surface with an arcuate cross section corresponding to the wire rope, and the wire rope surface The present invention relates to a wire rope fastening fitting formed with an uneven surface that substantially corresponds to the unevenness of the wire rope fastener.

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

1 is a cylindrical body, and 2 and 3 are a pair of chucks.
The cylindrical body 1 is formed into a flat cylindrical shape, and its internal space 1
1 has a width sufficient to allow the wire rope to be inserted through the metal fitting, and the height is set according to the diameter and number of the wire ropes to be inserted. Further, the upper and lower sides 11a and 11b of the internal space 11 are formed in an arc shape corresponding to a wire rope. A pair of chucks 2 and 3 have one side 21 and 31 in contact with each other.
is formed into a tapered surface, and the opposite surface, that is, the surfaces 22 and 32 that contact the wire rope, is formed with a concave arc in cross section corresponding to the wire rope. Fine serrated unidirectional projections 23..., 33... are formed on the tapered surfaces 21, 31 of both chucks 2, 3, and these projections 23..., 33... are designed to engage with each other. Also, the rope contact surface 2
2, 32 are formed with anti-slip grooves 24..., 34... having a pitch similar to the rope pitch in order to increase the contact resistance against the rope. In this way, the rope contact surfaces 22, 32 are formed into uneven surfaces that substantially correspond to the unevenness of the rope surface.

When this metal fitting is fixed to the end eye portion of the wire rope 4, as shown in FIGS. 3 to 5, the main body portion 41 of the wire rope 4
2 is inserted into the cylindrical body 1, and a pair of chucks 2 and 3 are inserted between the two parts 41 and 42 so that the tapered surfaces 2
1 and 31 are in contact with each other from opposite sides, and in this state, tension F is applied. Due to the application of this tension, the chucks 2 and 3 move in the direction of penetrating deeper into the cylindrical body 1, and the tapered surfaces 21 and 31 are pressed against each other more strongly.
The wire rope main body portion 41 and the folded portion 42 are firmly fixed within the cylindrical body 1 by the wedge action of No. 3.
In this case, as the tension F applied to the wire rope 4 increases, the wedge effect increases, and therefore, a stronger wire rope fixation state can be obtained. Therefore, if the wire rope tension F increases due to a load after the wire rope end is once fixed as described above, the wire rope fixing force increases due to the increase in tension, and the wire rope elongates. Even if the wire rope diameter is reduced by this, the same wire rope fixing force will be exerted due to the wedge action that follows.

Also, the rope contact surfaces 22, 3 of the chucks 2, 3
2 are provided with anti-slip grooves 24..., 34..., and the rope contact surfaces 22, 32 are formed into uneven surfaces that approximately correspond to the unevenness of the surface of the rope, so that the wedge action is more effectively exerted. .

In addition, for the same purpose, the rope contact surfaces 22, 32
It is also conceivable to provide serrated protrusions on the rope, but in this case, the protrusions will become wedged in the rope 4, damaging the rope 4 and reducing the breaking force, resulting in damage such as welts. Furthermore, the fine serrated unidirectional protrusions 23..., 24... provided on the tapered surfaces 21, 31 of the chucks 2, 3 engage with each other, thereby preventing both chucks 2, 3 from moving in the withdrawal direction. Even if a force in the opposite direction to the tension F acts, there is no fear that the chucks 2 and 3 will slip out of the cylindrical body 1.

The method of use and the effect of the metal fitting described above are the same when it is used to connect two wire ropes 5 and 6 as shown in FIG. In addition, when used to connect three wire ropes 7, 8, and 9, as shown in FIGS. 7 to 9, adjacent wire ropes 7, 8, and
A pair of chucks 2 and 3 are used between 9 and 9, respectively.

As can be seen by comparing FIGS. 4 and 5 with FIGS. 8 and 9, the thickness and taper angle of the chucks 2 and 3 can be changed as appropriate depending on the application and other factors.

On the other hand, in order to facilitate insertion of the chucks 2 and 3, the tips of the chucks may be formed into a tapered shape.

As described above, according to the present invention, it is possible to extremely easily fix the wire rope terminal eye portion and connect two or more wire ropes to each other on site without using any tools. In addition, the wedge action of the chuck provides a strong and stable rope fastening condition, and the rope fixing force that matches the tension is exerted, making it possible to reliably prevent the rope from slipping due to increased tension. It is possible to provide a wire rope fastening fitting with excellent practicality.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention; FIG. 1 is a perspective view of a cylindrical body, FIG. 2 is a perspective view of a chuck, FIG. Figure 4 is an enlarged side sectional view of the same, Figure 5 is a sectional view along the line of Figure 4, Figure 6 is a side view of the state in which it is used to connect two wire ropes, and Figure 7 is a view of three ropes. Side view showing the state used for connection, No. 8
The figure is an enlarged side view of the same, and FIG. 9 is a sectional view taken along the line of FIG. 8. 1...Cylindrical body, 2..., 3...Chick, 2
1, 31...Tapered surface of the same chuck, 22, 32
... rope contact surface, 23, 33 ... serrated projections, 24, 34 ... anti-slip grooves forming an uneven surface, 4 to 9 ... wire rope.

Claims (1)

[Scope of utility model registration request] It consists of a cylindrical body through which at least two wire ropes are inserted, and a pair of chucks inserted between adjacent wire ropes in the cylindrical body, and the chucks are in contact with each other on one side. ,
The chuck is configured to be inserted into the cylindrical body from opposite directions with the opposite surface in contact with the wire rope, and one surface of the chuck that contacts the wire rope is formed into a tapered surface, and a The chuck is provided with fine serrated unidirectional protrusions, and the surface of the chuck that comes into contact with the wire rope is a concave curved surface with an arcuate cross section corresponding to the wire rope, and an uneven surface that approximately corresponds to the unevenness of the wire rope surface. A wire rope fastening fitting characterized in that the wire rope fastening fitting is formed by forming a wire rope.