JPH0441715Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a retaining section for a vertically laid cable that is useful when supporting a plurality of vertically laid cables.

[Technical background of the invention and its problems] Traditionally, when installing rubber or plastic cables vertically in high-rise buildings, etc., cable support devices have been installed at required points along the installation path to secure the cables. Support is being provided.
Conventionally known devices for holding such vertically laid cables include devices configured to use only brackets to hold the cables in place, devices using cleats with springs, and the like.

However, a device configured to hold the cable in place using only a bracket exhibits a large gripping force at the initial stage of cable installation, but has the disadvantage that the cable deforms and the gripping force decreases after a long period of time after installation.

Furthermore, when the cable to be laid vertically is a high voltage cable, there is also the disadvantage that the shielding copper tape provided inside can be damaged by over-tightening of the bracket.

Furthermore, devices using spring-equipped cleats do not cause a decrease in gripping force over time, but have the disadvantage that the devices are expensive.

[Purpose of the invention] The present invention was developed in response to these circumstances, and is inexpensive and does not damage the shielding copper tape installed inside the cable even when the cable is a high voltage cable that is to be laid vertically. The purpose of this invention is to provide a tie-down section for vertically installed cables that does not require any damage.

[Summary of the invention] In other words, the anchoring part of the vertically laid cable of the invention consists of multiple strips of a pair of semi-cylindrical bodies made of thin metal plates with a flange at one end and processed to increase frictional force on the inside. The lower part of the trunk of these semi-cylindrical bodies is tied to the outer circumference of each of the plurality of cables by the binding means, and the flange is connected to the outer circumference of each of the plurality of cables installed vertically. A plurality of cables are respectively locked to the upper surface of a rubber spacer inserted between the plurality of cables and a locking device that supports the upper part of the body of the semi-cylindrical body. It is said that

[Embodiment of the invention] The details of the invention will be described below with reference to an embodiment shown in the drawings.

Fig. 1 is a perspective view of a semi-cylindrical body constituting the retaining part of the vertically laid cable of the present invention, and Figures 2 and 3 are a cross-sectional view and a vertical cross-sectional view showing the retaining part of the vertically laid cable of the present invention. be.

In FIG. 1, reference numeral 1 has a flange 2 at one end,
2 shows a pair of half-cylindrical half-cylindrical bodies made of thin metal plates.

A sand trap 3 is bonded to the inner surface of the semi-cylindrical bodies 1, 1 to increase the coefficient of friction.

As shown in Figures 2 and 3, these semi-cylindrical bodies are so-called triplex type CV cables, etc., which are made by twisting three strands of 6.6 kv single-core cross-linked polyethylene insulated cable (hereinafter referred to as "CV cable"). are fitted to the outer peripheries of the cables 5, respectively. Then, the lower portions of the bodies of these semi-cylindrical bodies 1, 1 are fixed to the outer periphery of the cable 5 using binding means 6 such as binding wires, respectively. Reference numeral 7 indicates a tape winding layer such as a self-fusing tape wound around the outer periphery of each binding means 6.

Reference numeral 8 indicates a bracket that supports a predetermined location of a plurality of cables laid vertically, and between each of the brackets 8 and the plurality of cables passing through the bracket 8, which have a substantially fan-shaped cross section, there is a bracket. A rubber spacer 9 for diameter adjustment made of ethylene propylene rubber, polychloroprene rubber, or the like and having a substantially fan-shaped cross section and complementary shape to .

Thus, the flanges 2 of the pair of semi-cylindrical bodies 1, 1 are respectively locked on the upper surface of each rubber spacer 9, and in this state the bolts attached to the bracket 8 are tightened.

In the above embodiment, the frictional force between the cable sheath and the semi-cylindrical bodies 1 is increased by pasting sandpaper 3 on the inside of the semi-cylindrical bodies 1, 1. , 1 may be punched out at a plurality of locations from the outside to form protrusions on the inside, or knurling may be directly applied to the inside of the semi-cylindrical bodies 1, 1 to increase the frictional force.

In the vertically laid cable retaining section of the present invention constructed in this way, the cable is gripped by the frictional force generated between the cable sheath and the inside of the semi-cylindrical bodies 1, 1, so that the bracket can be attached to the cable. Unlike the conventional method of gripping cables by tightening them, the shielding tape installed inside the cable will not be damaged even if the cable to be installed is a high voltage cable. In addition, each rubber spacer 9
If it is formed to be slightly thicker than the space between each spacer with a substantially fan-shaped cross section, elasticity in the radial direction will act on each rubber spacer 9 by tightening the bracket 8, and as a result, the inner surface of each rubber spacer 9 and the outside of the cable will be Due to the frictional force with the surface, the cable can be softly supported in this area as well. Therefore, in this case, the cable gripping force can be further increased by the so-called two-point support of the soft support part in the upper part of the semi-cylindrical body and the support part in the lower part.

[Effects of the invention] As explained above, the retention part of the vertically laid cable of the present invention is configured so that the cable to be laid vertically can be gripped by the frictional force between the inner surface of the semi-cylindrical body and the cable using a simple device. Therefore, even if the cable to be installed is a high voltage cable, the shielding copper tape provided inside the cable will not be damaged. Furthermore, since the structure of the restraining device is simple, it can be manufactured at low cost.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing a semi-cylindrical body used in the retention part of the vertically laid cable of the present invention, Figure 2 is a cross-sectional view of the retainer part of the vertically laid cable of the present invention, and Figure 3 is a longitudinal sectional view. be. 1... Semi-cylindrical body, 2... Flange, 5... Cable, 8... Bracket, 9... Rubber spacer.

Claims (1)

[Scope of utility model registration request] A pair of semi-cylindrical bodies made of a thin metal plate with a flange at one end and processed on the inside to increase frictional force are fitted onto the outer periphery of each of the multiple cables to create these semi-cylindrical bodies. The lower part of the body of the semi-cylindrical body is tied to the outer periphery of each of the plurality of cables by a binding means, and the flange is supported by the upper part of the body of the semi-cylindrical body. A retaining part for a vertically laid cable, characterized in that the retaining part is respectively secured to the upper surface of a rubber spacer inserted between the securing tool and the plurality of cables.