JPH0847151A - Cable cleat - Google Patents

Abstract

PURPOSE:To provide a cable cleat which permits the end of an orienting jig to be secured completely to an orienting point in measuring the snake dimensions of a cable and can carry out measurement highly precisely with minimum hands. CONSTITUTION:This cable cleat is provided with a cable clamping groove whose cross section is semi-circular, a pair of aluminum members 4, 5 opposingly-disposed on the top and bottom, and a tightening member 7 which is equipped with a spring and elastically-tightens and connects the contact part of both the members. A protrusion 8 is integratedly-formed at the top of the outer periphery surface of the upper member 4. In the protrusion 8, slender grooves are engraved in two directions orthogonal to the parallel direction to the shaft of the upper member 4, and both the ends of the slender grooves diverge outwards so that both wall surfaces may have an angle (for example, 10 degree) which meets the snake angle of a cable to the center line of the groove.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable cleat, and more particularly to a cable cleat made of aluminum or the like for gripping and fixing a snaked cable.

[0002]

2. Description of the Related Art Conventionally, when laying a single-core power cable in a cave or when laying it upright on a vertical surface such as a shaft, a tower or a shaft, the cable is snaked to lay it in a snake shape. By the change of, the axial force generated due to the thermal expansion and contraction of the cable is absorbed.

In the management of such a snake installation, it is necessary to set the two dimensions of the snake pitch and the snake width within specified values. Therefore, these dimensions are measured as follows. There is. That is, FIG.
As shown in Fig. 3, a water thread 3 is stretched between the centers of the cleats 2 for fixing the inflection points of the snake of the cable 1 to form a horizontal reference line, and the dimension between the middle portion and the center line of the protruding portion of the cable 1 is measured. The snake width (w) is used. In addition, the length between the centers of the cleats 2 is measured with a tape measure (convex) or the like, which is defined as the snake pitch (l).

[0004]

However, in measuring each dimension of such a snake laying, the water thread 3 is used.
The position of the photo control point was easily displaced due to, and measurement errors were likely to occur. That is, in the measurement of the snake pitch (l) and the snake width (w), as shown in FIG. 7, the center of the upper surface of the cleat 2 is set as a control point, and at this point, a control jig such as the water thread 3 is used. Although the ends are pressed and fixed by hand, the conventional cable cleat 2 has a rounded top on the outer peripheral surface, and therefore the pressing part is easily slipped and displaced, which easily causes a measurement error. Further, there is a problem that it takes a lot of time and labor for the measurement work because an operator is arranged on each of the two adjacent cable cleats 2 and two ends of the orientation jig have to be fixed and held by two people.

The present invention has been made to solve these problems, and when measuring the snake size of a cable, the end of the orientation jig can be securely locked and fixed to the orientation point. It is an object of the present invention to provide a cable cleat that enables accurate measurement without requiring human intervention.

[0006]

A cable cleat according to the present invention comprises an upper member and a lower member having gripping grooves having a semicircular cross section, which are opposed to each other, and are configured to grip and fix a cable in the gripping grooves. In the cable cleat
A protrusion having a narrow groove is provided on the top of the outer peripheral surface of the upper member so that the end of the locating jig for locating the installed state of the cable is locked.

In the present invention, it is preferable that the protrusion is integrally formed with the upper member which is the main body. Particularly, in the case of the cleat made of aluminum, the recess corresponding to the protrusion is formed in the molding die. It is preferable to mold integrally.

Further, the shape of such a protrusion is not particularly limited as long as it can lock the end portion of the orientation jig such as water thread, but it is easy to lock and fix and the orientation is determined. From the viewpoint of ease of use, it is preferable to have a flat petal shape in which fine grooves are engraved in each of two directions, a direction parallel to the axis of the upper member and a direction orthogonal thereto.

[0009]

In the cable cleat of the present invention, since the protrusion is provided at the portion corresponding to the control point on the top of the upper member, when measuring the respective dimensions of the snake laying of the cable and locating the laying state. By locking the end of the orientation jig, such as a water thread, to this protrusion, the orientation can be reliably fixed at the orientation point, and highly accurate measurement without error becomes possible. Further, since it is not necessary for the operator to manually press the end portion of the orientation jig, the labor of the measurement personnel can be saved.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a partially sectional front view showing an embodiment of the cable cleat of the present invention, and FIG. 2 is a top view of the same embodiment. As shown in these drawings, the cable cleat of the embodiment has a pair of semi-cylindrical upper members 4 made of aluminum, each having a grip groove having a semicircular cross section for gripping a cable such as a CV cable, and vertically arranged. , The lower member 5 and the upper and lower semi-cylindrical members 4 and 5, respectively.
It comprises a fastening member (bolt and nut) 7 with a spring 6 for elastically tightening and joining the abutting portions of both members.
On the top of the outer peripheral surface of the upper (holding side) semi-cylindrical member 4, a petal-shaped protrusion 8 as shown below is integrally provided. That is, as shown in the enlarged view of FIG. 3, in this protrusion 8, fine grooves 9 are formed in two directions, respectively, a direction parallel to the axis of the upper semi-cylindrical member 4 and a direction orthogonal thereto. Both ends of these narrow grooves 9 are outwardly arranged so that both wall surfaces form a predetermined angle (for example, 10 °) matched with the snake angle (8 to 11 °) of the cable with respect to the centerline of the groove. It is formed by expanding. Here, the snake angle is
The angle between the straight line connecting the centers of adjacent cleats and the center line of the cable overhanging portion.

In the cable cleat of the embodiment configured as described above, the petal-shaped projection 8 having the fine grooves 9 formed in two directions is integrally formed on the top of the outer peripheral surface of the upper semi-cylindrical member 4. Therefore, when measuring the dimension (snake pitch) between the control points, which is the center of the cleat, with the tape measure, as shown in FIG.
It can be fixed by sandwiching it in the narrow groove 9. Further, when the water thread is stretched between the center control points of the cleat, as shown in FIG. 5, the water thread 11 passing through the narrow groove 9 (the narrow groove in the axial direction) is also used.
By hooking the enlarged portion 12 of the
The ends can be easily fixed. In this way, when measuring the dimensions of the snake laying of the cable and locating the laying state, the end of the locating jig such as the tape measure 10 or the water thread 11 is firmly locked and fixed to the locating point at the center of the cleat. Since the measurement can be performed with high accuracy without any error and the operator does not need to press the end of the orientation jig by hand, the labor of the measurement personnel can be saved. Furthermore, at both ends of the narrow groove 9 formed in the projection 8 in two directions, both wall surfaces have a predetermined angle (10 °) that matches the snake angle (8 to 11 °) of the cable with respect to the center line of the groove. Since it is expanded to the outside, the orientation jig such as the water thread 11 is extended according to the wall surface of the narrow groove 9 to measure the distance between the adjacent cleats. It has the advantage of being easy.

Although the spring tightening type aluminum cleats for CV cables have been described in the above embodiments, the present invention is not limited to this and can be applied to cleats for OF cables, for example.

[0013]

As described above, according to the cable cleat of the present invention, since the projection having the narrow groove is provided on the top of the outer peripheral surface of the upper member, the dimensions of the snake laying of the cable are measured and laid. When locating the state, the end of the locating jig such as water thread can be reliably fixed to the locating point, and highly accurate measurement without error can be performed. Further, since it is not necessary for the operator to manually press the end portion of the orientation jig, the labor of the measurement personnel can be saved.

[Brief description of drawings]

FIG. 1 is a partial sectional front view showing an embodiment of a cable cleat of the present invention.

FIG. 2 is a top view of the same embodiment.

FIG. 3 is an enlarged plan view of a protrusion of the embodiment.

FIG. 4 is a perspective view showing a state in which the ends of the tape measure are locked and fixed to the protrusions in the cable cleat of the embodiment.

FIG. 5 is a perspective view showing a state in which the end of the water thread is locked and fixed to the protrusion in the cable cleat of the embodiment.

FIG. 6 is a diagram schematically showing each dimension of a snake width and a snake pitch in laying a cable snake.

FIG. 7 is a perspective view showing a method of fixing an end portion of a water thread with a conventional cable cleat.

[Explanation of symbols]

 4, 5 ... Aluminum semi-cylindrical member 6 ... Spring spacer body 7 ... Fastening member 8 ... Projection 9 ... Fine groove

Claims (3)

[Claims] 1. A cable cleat constructed by arranging an upper member and a lower member each having a grip groove having a semicircular cross section so as to oppose each other, wherein a cable can be gripped and fixed in the grip groove. A cable cleat, characterized in that a protrusion having a narrow groove is provided at the top of the surface, the end of a positioning jig for locating the installed state of the cable being locked. 2. The cable cleat according to claim 1, wherein the narrow groove is formed in two directions, a direction parallel to the axis of the upper member and a direction orthogonal thereto. 3. At both ends of the narrow groove engraved in the two directions, both wall surfaces are expanded so as to form a predetermined angle with the center line of the groove according to the snake angle of the cable. The cable cleat according to claim 2, wherein: