JPH01152915A - Supporting method for power cable or connecting section thereof - Google Patents

Abstract

PURPOSE:To move a cable or a connecting section thereof smoothly in a plane manner by gripping the cable or the connecting section thereof by combining a linearly sliding member and a rotating member. CONSTITUTION:Two horizontal shafts 1a, 1b parallel to each other at an interval in a vertical direction are installed. The parallel shafts 1a, 1b are connected by two connecting shafts 3 and fittings 2a, 2b sliding in the direction shown by an arrow (a). The connecting shafts 3 have rotary fittings 4 rotating in the direction shown by an arrow (b), and the rotary fittings 4 have horizontal shafts 5 projecting perpendicularly. Lower and upper gripping members 6 and 7 sliding in the direction shown by an arrow (c) are mounted to the horizontal shafts 5, and a cable or a cable connecting section is gripped by the members 6 and 7. Consequently, the cable or the connecting section smoothly moves in a plane, and particularly follows smoothly even when the left and right offset sections B of the connecting section A are asymmetric. The method is suitable for supporting cables in a duct or manhole.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a support method for supporting power cables or cable connections in tunnels, manholes, and the like.

(Prior Art) Conventionally, a cable or a cable connection part has been supported on a saddle-shaped insulator that can mainly move in one direction, that is, in a horizontal direction perpendicular to the cable installation direction.

Figure 2 is an explanatory diagram of such a support method, and shows the vertical hardware (I+
) has one end fixed to the bracket, and the hardware (12) protrudes in the horizontal direction perpendicular to the cable installation direction, and a saddle-shaped insulator (+3) on which the cable or cable connection part is placed.
) is provided so as to be movable in the direction of arrow (d) in the figure. As a result, the cable or cable connection section placed on the saddle-shaped insulator (+3) becomes movable in the direction of arrow (d).

Also, depending on the type of cable installation, there may be movement in the longitudinal direction of the cable, in addition to the above-mentioned directions, at cable connections, etc. In this case, a chain-shaped support as shown in Figure 3 is used. Sometimes.

Figure 3 is an explanatory diagram of a support method using a tsume-shaped support material.
A support shaft (14) with one end fixed to the vertical hardware (11) protrudes in the horizontal direction perpendicular to the direction of cable installation. A shape support (15) is inserted through the shape support member (15) so as to be movable in the direction of the arrow (d) in the figure and rotatable in the direction of the arrow (e). As a result, the cable connection portions placed on the clasp-shaped support member (14) are movable in the direction of arrow (d) and in the longitudinal direction of the cable.

(I!!I problem to be solved) According to the conventional support method of two series, the cable connection part (A) has symmetrical cable offset parts ( B), the thermal behavior of the cable causes almost parallel movement as indicated by the dotted line in the figure, and there was no particular problem.

However, recently, in order to reduce the size of cable installation routes, tunnels, and conduits, and to make effective use of them, cable offset portions (B) on both sides of the cable connection portion (A) have been A case has arisen where the cable is installed asymmetrically. In this case, due to the thermal behavior of the cable, the cable connection part (A) is tilted as shown by the dotted line in the figure, the connection box is restrained, and the inside of the connection part moves, causing damage to the machine. There is a risk that the product may be damaged and cause electrical damage.

(Means for Solving the Problems) The present invention provides a method for supporting cables or cable connections that solves the above-mentioned problems, and is characterized by a combination of linearly sliding members and rotating members. This is a supporting method in which the gripping member that grips the cable or the cable connection part does not impose any restriction on the planar movement of the cable or the cable connection part.

FIG. 1 is an explanatory diagram of a specific example of a support groove that embodies the support method of the present invention.

(l^) (18) are two parallel axes arranged in parallel in the horizontal direction with an interval in the vertical direction. The above parallel axis (1
^) (16) is equipped with two sets of slide fittings (2^) (2) connected by a connecting shaft (3) at intervals, and these slide fittings (2 (IL) (26) is provided so as to be slidable on the parallel axis (+6L) (la) in the direction of arrow (a).

A rotary fitting (4) is installed on the connecting shaft (3) so as to be rotatable on the shaft in the direction of arrow (b).
) is provided with a horizontal shaft (5) projecting at right angles to the cable installation direction, one end of which is fixed to the fitting. The horizontal shaft (5) is equipped with a lower gripping member (6) that grips the cable or cable connection part that slides on the shaft in the direction of the arrow (C), and this lower gripping member (6)
and an upper gripping member (7) to grip the cable or cable connection. (8) is a connecting ring that fixes adjacent lower gripping members (6) so that they always face each other, but this is not necessarily required.

Two sets of upper and lower gripping members (6) (7) are provided by the above-mentioned mechanism.
The cable or cable connection gripped by the cable can be moved freely in the horizontal direction without any restraint.

As mentioned above, if cables and cable connections are not constrained in any way, their movements will be most balanced and behave in the direction where strain will not be concentrated locally, so in terms of thermal behavior, a trowel is also a stable support method. .

In particular, even when the left and right cable offset portions of the cable connection portion are asymmetrical, it is possible to follow the movement of the connection portion and support the connection portion without constraining it in any way.

(Effects of the Invention) As explained above, according to the method for supporting a cable or cable connection part of the present invention, the thermal behavior of the cable or cable connection part is followed without any restraint, so that It won't cause any damage.

In particular, the supporting method of the present invention is extremely effective when applied to a case where the cable offset portions provided on both sides of the cable connection portion are asymmetrical.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a specific example of a support mechanism that embodies the support method of the present invention. FIG. 2 and FIG. 3 are both explanatory diagrams of the conventional supporting method. Figures 4(a) and 4(d) are explanatory diagrams of the thermal behavior of cable connection parts by conventional support methods. Shaft, 4... Rotating metal fitting, 5... Horizontal axis, 6... Lower gripping metal fitting, 7... Upper gripping metal fitting, 8
・・・Connecting rod hole 2 diagram

Claims (1)

[Claims] (1) A power cable or a power cable characterized in that the gripping member that grips the cable or the cable connection part by a combination of a linearly sliding member and a rotating member does not impose any restriction on the planar movement of the cable or the cable connection part. How to support the connection.