JPH10115350A - Rope stretching metal fitting and rope stretching method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve work executing performance to stretch a rope and durability by a method wherein a wire end rod is screwed in a sleeve with a female thread inserted in a stay and rotated by a nut. SOLUTION: A rope stretching metal fitting comprises a sleeve 1 with a female screw 1a inserted through a stay 10 and rotated by a nut 2 attached to an end part; a coupling metal fitting 5 mounted on the end part of a rope R; and a wire end rod 7 with a male screw 7c coupled to the coupling metal fitting and extending. Further, A rotation block part 7b is arranged at the central part of the wire end rod 7. A rope stretching method is such that the sleeve 1 with a female screw 1a to the end part of which the nut 2 is attached is inserted in the stay 10 and the wire end rod 7 with a male screw 7c is extended through the coupling metal fitting 5 mounted on the end part of the rope R. By rotating the sleeve 1 by the nut 2, the wire end rod 7 is screwed in an internal part, and the rope R is installed in a stretching state at the stay 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rope tensioning fitting and a rope tensioning method suitable for tensioning and tensioning a rope in a guard cable, an entrance prevention fence, a lock fluence, or the like.

[0002]

2. Description of the Related Art A conventional example of a guard cable will be described. A plurality of intermediate columns and terminal columns are installed at intervals, and a plurality of wire ropes are mounted on each intermediate column at an appropriate vertical interval with an appropriate mounting device. Each wire is mounted by a plurality of stages (not shown), and each wire is connected by a connecting bracket a, a cable end rod c with a male thread c3, and a rope tensioning bracket including a washer f and a nut e as shown in FIG. The structure is such that the end of the rope is tensioned and stretched to the terminal support. Specifically, as shown in FIGS. 3, 4 and 5, one end of each wire rope R is inserted into one end of the connection fitting a and attached by wedge b or the like, and a cable end is attached to the other end of the connection fitting. The male screw part a1 of the rod c is inserted and connected with a nut d to extend, and the male screw a3 of the cable end rod is inserted into the terminal support p, the washer f is fitted, the nut e is screwed in, and the rotation preventing part c2 is inserted. The rotation of the cable end rod c is prevented, and the nut e is further screwed in. At first, each wire rope is tensioned appropriately, and then the wire rope is appropriately tightened with the nut e as needed. R is stretched evenly.

In the conventional guard cable, as described above, the cable rod is inserted into the terminal support p, the nut e is screwed in, and each wire rope R is tensioned appropriately.
Since the structure is such that it is tightened at any time and adjusted to be evenly tensioned, the tip of each cable end rod c protrudes long outside the terminal support p, and the protruding length tends to vary. Therefore, when the terminal support p is built adjacent to the building g as shown in FIG. 4 or when a pair of terminal support p is built adjacent to and extended as shown in FIG. On the other hand, the terminal pillars p or the terminal pillars p are built apart from each other so as to be able to tighten and retighten at the beginning of the extension. If the wire rope is long, the middle of the cable end rod c or the wire rope R
A line adjuster (not shown) is interposed at the end of the wire rope, and the wire rope is also tensioned by the line adjuster.

[0004]

In a conventional rope tensioning fitting, a cable end rod extending from a rope end through a connecting fitting as described above is inserted into a terminal support, and a nut is mounted outside the terminal support. Because of the structure of tightening by screwing in and tightening as necessary, each cable end rod protrudes long outside the terminal post as shown in FIG. Is likely to occur, and the appearance may be impaired and the clothes may be damaged. Since it is screwed in only with a nut, there is a limit to the fixing force of the cable end rod, and it becomes difficult to retighten due to rusting or screw thread collapse. As shown in FIGS. 4 and 5, there are problems such as the necessity of erection of the terminal support or the terminal support with a large distance from each other.

[0005] If a line adjuster is interposed at the end of the cable end rod or the wire rope, the length and dispersion of the cable end rod can be reduced somewhat, but it is necessary to secure the cable end rod appropriately. This fixing force has a limit. There is a risk that additional tightening may become difficult due to rusting or screw thread collapse. There are problems such as an increase in cost due to a complicated mechanism.

SUMMARY OF THE INVENTION The present invention has been developed to solve the above-mentioned problems. The object of the present invention is to insert a female thread into a support post or the like and rotate a sleeve with a female thread with a nut to fix a cable end rod. It is an object of the present invention to provide a rope tensioning fitting and a rope tensioning method in which the rope tensioning performance and the reliability are improved by screwing the rope.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a sleeve with a female thread which is inserted into a support or the like and rotated by a nut attached to an end, a connection fitting attached to an end of a rope, and a connection to the connection fitting. And a rope end fitting having a relatively simple mechanism provided with a rotation preventing portion at the center of the above-mentioned rope end rod. A process of fitting and inserting the connection end to the end of the rope, extending the male threaded rod end rod, and rotating the sleeve with a nut and screwing the rope end rod. In addition to the simple process, the construction is facilitated, and the rope end rod is screwed into the sleeve. , Making tension and retightening easier, The rope can be easily and accurately tensioned on pillars, etc., and the tip of the cable end rod does not protrude from the nut. It is increasing.

[0008]

1A, 1B, and 1C show an embodiment of the present invention, and FIG. 2 shows a use mode thereof. In the drawing, reference numeral 1 denotes a sleeve having a female thread 1a, 2 denotes a nut fixedly attached to an end of the sleeve, 3 denotes a washer, 5 denotes a connection fitting attached to the end of the rope, and 7 denotes an extension connected to the connection fitting. Male screw 7
A rope end rod with c, a rotation preventing portion 7b provided at an intermediate portion of the rope end rod, a column (terminal column), R is a rope such as a wire rope.

In the embodiment shown in FIGS. 1 and 2, a sleeve 1 having a female thread 1a which is inserted into a column 10 or the like and rotated by a nut 2 attached to an end thereof, and attached to an end of a rope R. The rope tensioning fitting includes a connecting fitting 5 and a cable end rod 7 with a male screw 7c connected to and extending from the connecting fitting 5.

[0010] Further, in the above-mentioned rope tension fitting, a rotation preventing portion 7b is provided at a central portion of the cable end rod 7, thereby providing a rope tension fitting.

Further, a sleeve 1 having a female thread 1a provided with a nut 2 at an end thereof is inserted into a support post 10 or the like, and a rope R
A cable end rod 7 with a male screw 7c is extended through a connecting fitting 5 attached to the end of the cable, and the sleeve 1 is rotated by the nut 2 to screw the cable end rod 7 into the inside. The rope tensioning method is characterized in that the rope is tensioned.

An embodiment in which a wire rope is tensioned and stretched on a terminal support via a rope tensioning fitting in a guard cable, an entrance prevention fence, a lock fluence or the like will be described in more detail with reference to FIGS. 1 is formed of a steel pipe or the like as shown in FIG. 1A, is provided with a female thread 1a corresponding to the male screw 7c of the cable end rod 7, and is formed to be appropriately long corresponding to the extension length of the wire rope R. Further, the internal thread 1a of the sleeve 1 does not necessarily need to be formed over the entire length of the sleeve as shown in the figure, and is not shown. However, if necessary, the internal thread 1a is partially provided on the inner surface of the sleeve. A required screw length is secured at least on the threaded side of the male screw 7c of the cable end rod, or a central portion of the sleeve 1 (post 1)
Part of the protruding part when it is inserted into 0 etc.)
It is formed on a square outer peripheral surface to form a spanner hook portion, and a convex portion formed on the inner surface side of the sleeve is used as a guide for the male screw 7c of the cable end rod. Further, the thread of the female screw 1a is formed to be appropriately large. In order to secure the fixing force sufficiently, the cable end rod 7 to the sleeve 1 at the beginning of the tensioning is set.
In addition to the screwing, the structure has been made easy to retighten without being particularly affected by rusting or screw thread collapse after construction, and the workability such as screwing is further improved.

The nut 2 is firmly attached to one end (left end in the figure) of the sleeve 1 by welding or the like, and is strongly attached.
For example, a nut 2 is fixed to a flange (not shown) connected to the sleeve 1 by welding or the like, and is strongly attached. Furthermore, it is preferable that a female screw 2a is arranged in series with the female screw 1a of the sleeve 1 so that the tip of the male screw 7c of the cable end rod 7 is screwed into the female screw 2a. Is rotated as shown by arrow X, and the male screw 7c of the cable end rod is screwed as shown by arrow Y.

The connecting fitting 5 is formed of a steel material or the like as shown in FIG. 1B, and the end of the wire rope R is inserted into a hole provided at one end (right side in the drawing) and fixed with a wedge 6 or the like. And a male screw 7a provided at the base end of the cable end rod 7 is inserted into a hole provided at the other end (left side in the figure), and is fixedly attached with a nut 8 to extend.

Further, as shown in FIG. 1B, the cable end rod 7 is formed of a steel material or the like, and a male screw portion 7a provided at a base end portion.
And a rotation preventing portion 7b having a central portion formed in a square cross section, and a male screw 7c provided on the distal end side and formed to correspond to the sleeve 1 and the nut 2, and the like. A male screw 7a is inserted into a hole provided in the nut, fixed with a nut 8 and extended, and the rotation of a cable end rod 7 is prevented by a rotation preventing portion 7b (using an appropriate device not shown), and a nut 2 is formed. As a result, the sleeve 1 is rotated to screw and connect the male screw portion 7c into the sleeve. Further, it is also possible to integrally and extend the other end of the connection fitting 5 as needed.

As shown in FIG. 1C, the above-mentioned rope tensioning fitting is such that a sleeve 1 fitted with a washer 3 is rotatably fitted into an insertion hole of a terminal support 10, and a wire rope R is attached to one end of a connecting fitting 5. Of the cable end rod 7 is fixedly attached to the other end of the connecting metal fitting 5 with the nut 8, and is extended. The rotation of the cable end rod 7 is prevented by the
Is arranged on the end side of the sleeve 1, and when the sleeve 1 is rotated by the nut 2 as shown by the arrow X, the male screw portion 7 is formed.
c is screwed inside as shown by arrow Y, and the wire rope R
Is connected to the terminal support 10 via the connection fitting 5, the cable end rod 7, and the sleeve 1. Further, the screwed wire rope R is appropriately tensioned and stretched easily.

In the case of guard cables, access prevention fences, lock fluences, etc., the intermediate portions of a plurality of wire ropes are mounted on a plurality of intermediate posts at a plurality of levels with mounting equipment at intervals vertically (not shown). As shown in FIGS. 1 and 2, the end of each wire rope R is easily tensioned to the terminal support 10 by the above-mentioned rope tensioning fitting. As shown in the drawing, the difference in elongation in each wire rope R is sufficiently absorbed by adjusting the screwing length of the male screw 7c of the sleeve 1 so that the distal end of each male screw 7c does not protrude from the nut 2 to each wire rope. It is stretched with even tension.

The illustrated rope tension fitting is attached to the end of the wire rope R and the sleeve 1 with the female thread 1a which is inserted into the column 10 or the like and rotated by the nut 2 attached to the end as described above. A relatively simple tensioning mechanism having a connecting fitting 5 and a cable end rod 7 having a male screw 7c connected to and extending from the connecting fitting is provided. The sleeve 1 having the female thread 1a is attached to the intermediate support 10. Inserting step and wire rope R
And a process of attaching the connecting fitting 5 to the end of the cable end and extending the cable end rod 7 with the male screw 7c, and a step of rotating the sleeve 1 with the nut 2 and screwing the cable end rod 7 inside. By a simple process, the wire rope R can be easily stretched on the intermediate support 10 by appropriately tensioning the wire rope R. A male screw 7 of a cable end rod 7 is provided inside a sleeve 1 formed to be appropriately long.
c is screwed moderately long, and tension such as tightening at the beginning of the construction of the wire rope R and additional tightening after the construction is easily performed. In addition, the screw-in length is appropriately increased to secure a sufficiently high fixing force, and there is no possibility that retightening or the like becomes difficult due to rusting or screw thread collapse. There is no protrusion of the cable end rod to the outside of the intermediate support 10, so that it can be built close to various structures g or close to each other.

In the above-described embodiment, an example in which the end of the wire rope is connected to the intermediate support and stretched is mainly described. However, the end of the wire rope is connected to various structures other than the intermediate support. In the case of the extension, the same operation and effect can be obtained in the same manner. In addition, the present invention is not limited to the stretching of the wire rope, but is also applicable to the stretching of various fiber ropes. When the fiber rope is to be stretched, the end of the rope is connected to the connection fitting 5 by a suitable conventional means, and as the elongation of the rope increases, the sleeve 1 and the male thread 7c of the cable end rod 7 are connected. The same operation and effect can be obtained by being applied in the same manner with a degree of design change such as appropriately increasing the length.

[0020]

According to the present invention, there is provided a sleeve with a female thread, which is constructed as described above and is rotated by a nut which is inserted and attached to a column or the like, a connection fitting attached to the end of the rope, and a connection fitting to the connection fitting. As a rope tensioning device provided with a threaded rod end rod with an extended thread, a relatively simple tensioning mechanism is used, and a step of inserting a sleeve with a female thread into a column or the like, and attaching the threaded end to the end of the rope. The construction is facilitated by a relatively simple process consisting of a process of extending the threaded rod with male thread via a connection bracket, a process of rotating the sleeve with a nut and screwing the cable end rod into the interior, etc. The cable end rod is screwed into the sleeve to secure sufficient tightening length at the beginning of tensioning and additional tightening length and fixation force after construction, and to facilitate connection of ropes, tension and retightening, and to support columns etc. Rope to It can be easily tensioned with high precision and can be installed.Even if some rusting or screw thread collapse occurs, there is no particular obstacle to retightening after construction, each rope can be adjusted to equal tension, and the cable end rod can be adjusted. It does not protrude from the nut, and has significantly improved the reliability and durability as well as the overall construction performance of the rope tensioning. In addition, a relatively simple mechanism is provided at low cost.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a sleeve provided with a nut according to an embodiment of the present invention, FIG. 1A is a side view of a connecting fitting and a cable end rod, and FIG. (C)

FIG. 2 is a side view showing a use mode of a terminal support such as a guard cable.

FIG. 3 is a side view showing a partial cross section of a conventional rope tensioning fitting.

FIG. 4 is a side view showing one mode of use of a conventional rope tensioning bracket.

FIG. 5 is a side view showing another mode of use of the conventional rope tensioning fitting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sleeve 1a Female thread (sleeve) 2 Nut 5 Connecting bracket 7 Cable end rod 7b Rotation prevention part (cable end rod) 7c Male screw (cable end rod) 10 Post, etc. R rope

Claims (3)

[Claims] 1. A sleeve with a female thread, which is inserted into a support or the like and rotated by a nut attached to an end, a connecting fitting attached to an end of a rope, and a male screw connected to and extended to the connecting fitting. A rope tensioning fitting comprising a cable end rod with a portion. 2. The rope tensioning fitting according to claim 1, wherein a rotation preventing portion is provided at a central portion of the cable end rod. 3. A female threaded sleeve having a nut attached to an end thereof is inserted into a support column or the like, and a threaded rod with an external thread is extended through a connection fitting attached to an end of the rope, and the sleeve is secured by the nut. A rope tensioning method characterized by rotating and screwing a cable end rod inside, and tensioning and stretching a rope on a support column or the like.