JP2583812Y2 - Socket for fixing terminal of fiber rope - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a socket for fixing a terminal of a fiber rope.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, in order to utilize a slope 3 between stepped grounds 1 and 2, a lower ground 2 is used.
In many cases, a vertical retaining wall 4 made of concrete is erected, and earth and sand 5 are inserted between the retaining wall 4 and the upper ground 1 to expand the upper ground 1.

In this case, a synthetic resin socket 7a fixed to one end of a fiber rope 6 is buried in the retaining wall 4 in order to prevent the retaining wall 4 from falling outside due to the weight of the earth and sand 5, etc. There is a construction method in which a synthetic resin socket 7b fixed to the terminal is embedded in a concrete anchor 8 cast on the upper ground 1 so that the retaining wall 4 is supported by the fiber rope 6. The reason why the rope 6 and the sockets 7a and 7b are made of synthetic resin instead of metal is that they have excellent corrosion resistance.

[0006] As shown in FIG. 6, the fiber rope 6 is
Several hundred to several thousand thin fibers are bundled and covered with a sheath (thin skin) 6a. Each of the sockets 7a and 7b is composed of a synthetic resin case 9 having a conical tapered hole 9a. Then, the end of the fiber rope 6 is inserted into the tapered hole 9a from the small diameter side of the tapered hole 9a of the case 9, the sheath 6a is peeled off, and the end of the fiber rope 6 is loosened and dispersed in the tapered hole 9a.
By injecting resin 10 such as epoxy into the tapered hole 9a from the large diameter side of the tapered hole 9a and solidifying the same, the sockets 7a and 7b (case 9) are fixed to the ends of the fiber rope 6. .

[0005]

However, if the fibers of the ends of the unraveled fiber rope 6 are not straightened, the tensile stress does not uniformly act on the fibers of the ends, so that the fibers can be easily cut. Before injecting the resin 10 such as, for example, there is a problem that an unrealistic and troublesome work of straightening each fiber one by one with tweezers or the like must be performed. In addition, resin 1 such as epoxy
Temperature control for solidifying 0 is required, and the solidification time is very long (about 24 hours).

Accordingly, an object of the present invention is to provide a fiber rope terminal fixing socket which can be easily and quickly fixed to a fiber rope terminal.

[0007]

In order to achieve the above object, the present invention provides a synthetic resin case having a conical tapered hole, and a synthetic resin conical taper fitted into the tapered hole of the case. A taper angle of the taper wedge is set to be larger than a taper angle of the taper hole of the case, and a cross-sectional area in a direction perpendicular to the axis of a gap between an outer surface of the taper wedge and an inner surface of the taper hole is reduced. Is characterized by being substantially constant over the entire length.

[0008]

The end of the fiber rope is inserted into the tapered hole from the small diameter side of the tapered hole of the case, and pulled out from the large diameter side of the tapered hole slightly longer than the length of the tapered wedge to peel off the sheath. After that, insert the tip of the taper wedge into the center of each fiber at the end of the drawn fiber rope, and then pull the fiber rope out of the case,
A tapered wedge is fitted into the tapered hole together with the end of the fiber rope. In the process of fitting (submerging) the taper wedge, each fiber at the end of the fiber rope is automatically straightened by the frictional action between the outer surface of the taper wedge and the inner surface of the tapered hole. The taper angle of the taper wedge is set larger than the taper angle of the taper hole of the case, and the cross-sectional area in the direction perpendicular to the axis of the gap between the outer surface of the taper wedge and the inner surface of the taper hole is substantially constant over the entire length of the taper wedge. Therefore, the stress (clamping force) applied to each fiber sandwiched between the outer surface of the tapered wedge and the inner surface of the tapered hole becomes uniform, which is combined with the fact that each fiber is straightened as described above. Therefore, since the tensile stress acts uniformly on each fiber, it is difficult to cut, and the fixing efficiency of each fiber is improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. 5 and 6 are assigned the same reference numerals as in the prior art and the detailed description thereof is omitted.

As shown in FIG. 2, the terminal fixing socket 17 of the fiber rope 6 comprises a synthetic resin case 19 and a synthetic resin tapered wedge 20.

The case 19 has a conical tapered hole 19a inside, and a small-diameter port 19b and a large-diameter port 19c are formed in the tapered hole 19a. The small diameter mouth 19b is
The inner diameter is set such that the end 6b of the fiber rope 6 can be inserted into the tapered hole 19a. The inner surface of the tapered hole 19a is set at a taper angle A, and the outer surface of the case 19 is also set at a taper angle A with a constant thickness. The outer surface of the case 19 does not necessarily need to have the taper angle A.

The tapered wedge 20 has an outer diameter capable of being fitted into the tapered hole 19a from the large-diameter opening 19c of the case 19. The length of the tapered wedge 20 is the tapered hole 19a.
Is set to about 2/3 of the length. The tapered wedge 2
The outer surface of 0 is set to a taper angle B larger than the taper angle A of the inner surface of the tapered hole 19a of the case 19 (A <B). With this setting, the cross-sectional area in the direction perpendicular to the axis of the gap between the outer surface of the tapered wedge 20 and the inner surface of the tapered hole 19a becomes substantially constant over the entire length of the tapered wedge 20. Specifically, the cross-sectional area of the gap e between the outer surface on the rear side of the tapered wedge 20 and the inner surface of the tapered hole 19a on the large-diameter opening 19c side, and the tapered wedge 2
The cross-sectional area of the gap f between the outer surface on the leading end side of the zero and the inner surface of the tapered hole 19a on the small-diameter opening 19b side, and all the cross-sectional areas between the gaps e and f are substantially constant over the entire length of the tapered wedge 20. Become. An insertion edge 20a is formed at the forefront of the tapered wedge 20.

According to the above configuration, first, as shown in FIG.
b into the tapered hole 19a, pull it out of the large-diameter opening 19c slightly longer than the length of the taper wedge 20, and peel off the sheath 6a slightly longer than the length of the taper wedge 20, and remove the fiber bundle of the terminal 6b. Expose. Thereafter, the foremost edge 20a of the tapered wedge 20 is inserted into the center portion of the fiber at the end 6b of the drawn fiber rope 6. Then, FIG.
As shown in FIG. 1, while pulling the fiber rope 6 out of the case 19, the taper wedge 20 is fitted into the tapered hole 19a together with the end 6b of the fiber rope 6 as shown in FIG.

In the process of fitting (submerging) the taper wedge 20, each fiber at the end 6b of the fiber rope 6 is automatically straightened by a frictional action between the outer surface of the taper wedge 20 and the inner surface of the tapered hole 19a. It is stretched out. This eliminates the need for a conventional fiber stretching operation.

When the tapered wedge 20 is fitted into the tapered hole 19a, the cross-sectional area in the direction perpendicular to the axis of the gap between the outer surface of the tapered wedge 20 and the inner surface of the tapered hole 19a is substantially constant over the entire length of the tapered wedge 20. Therefore, the stress (clamping force) applied to each fiber sandwiched between the outer surface of the tapered wedge 20 and the inner surface of the tapered hole 19a becomes uniform. This, combined with the fact that each fiber is stretched straight, makes it difficult to cut because the tensile stress acts uniformly on each fiber.

Furthermore, since it is not necessary to fix the end 6b of the fiber rope 6 with a resin as in the prior art, problems caused by solidification of the resin (temperature control and solidification time) are eliminated.

When the taper angle B of the outer surface of the taper wedge 20 is set to be the same as the taper angle A of the inner surface of the taper hole 19a of the case 19 (A = B), the outer surface of the taper wedge 20 and the taper hole 19a The cross-sectional area in the direction perpendicular to the axis of the gap on the inner surface of the tapered wedge 20 is small at the front end of the tapered wedge 20 and is large at the rear end. As a result, each fiber is sandwiched between the outer surface of the tapered wedge 20 on the front side and the inner surface of the tapered hole 19a on the small diameter side, but the outer surface on the rear side of the tapered wedge 20 and the large diameter side of the tapered hole 19a. Each fiber is not interposed between the inner surfaces of the fibers. Therefore, since the stress (clamping force) applied to each fiber is not uniform, it cannot be used for fixing the fiber rope 6 as in the present invention.

[0018]

As is clear from the above description, the terminal fixing socket of the fiber rope according to the present invention has a tapered wedge fitted into the tapered hole of the case together with the terminal of the fiber rope. Therefore, each fiber at the end of the fiber rope is automatically straightened in the process of inserting the taper wedge, so that the conventional work of stretching each fiber becomes unnecessary. In addition, the stress (clamping force) applied to each fiber sandwiched between the outer surface of the tapered wedge and the inner surface of the tapered hole becomes uniform, and the tensile stress acts on each fiber uniformly, so that it becomes difficult to cut, and The fixing efficiency is significantly improved. Furthermore, since it is not fixed with a resin such as epoxy, temperature control and solidification time are not required, and fixing can be performed easily and quickly.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a fixed socket according to the present invention.

FIG. 2 is a sectional view showing a relationship between a socket case and a tapered wedge.

FIG. 3 is a cross-sectional view when a fiber rope is inserted into a case.

FIG. 4 is a cross-sectional view when a taper wedge is inserted into a fiber rope.

FIG. 5 is a cross-sectional view showing a construction example.

FIG. 6 is a sectional view of a conventional socket when it is fixed.

[Explanation of symbols]

6 ... fiber rope, 6b ... terminal, 17 ... socket, 19 ...
Case, 19a: tapered hole, 20: tapered wedge, A, B ...
Taper angle.

Claims (1)

(57) [Scope of request for utility model registration] 1. A synthetic resin case having a conical tapered hole, and a synthetic resin conical tapered wedge fitted into the tapered hole of the case. The end of the fiber rope, wherein the cross-sectional area in the direction perpendicular to the axis of the gap between the outer surface of the tapered wedge and the inner surface of the tapered hole is substantially constant over the entire length of the tapered wedge. Socket for fixing.