JPH01114321A - Hollow pole and method of laying wire using same - Google Patents

Abstract

PURPOSE:To prevent a fall accident at work on an electric pole, by providing an opening to the position near the ground for the hollow pole with a hole on the top. CONSTITUTION:For a cylindrical hollow electric pole an opening is provided to the position near the ground when the pole is set up. An electric pole proper 1 having a wire connection housing 2 to this opening position is to be set up. A wire connection terminal box 10 in the wire connection device housing 2 is fixed, etc., and from under the ground the cable is laid through a wire laying tube 8 to the wire connection terminal box 10 and connected. From the abovementioned opening of the pole 1, then, a lead wire 30 is pushed up towards a top 3 through inside the pole 1. From the top 3 the wire is taken out to outside and is dropped onto the ground and at the edge of the lead wire 30 a wire 31 is connected and pulled into the pole 1. After the wire 31 is fixed to a metal fitting 12, it is connected to the wire connection terminal box 10. A top cover 5 is provided on the top 3 of the pole 1 so that an alien substance may be prevented from getting in. In this way, since the wiring work is performed on the ground and not on the pole, the fall accident as seen so far at the work on the pole can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for safely laying electric wires and a hollow utility pole used during the work.

(Prior art) As shown in Fig. 4, the conventional method of laying electric wires is to attach a tube for laying electric wires from underground to the side of a utility pole with a band, and then attach the electric wires laid in the tube for laying electric wires to the top of the pole. This was done by attaching it to a nearby electric wire connection terminal box. Therefore, the conventional method of laying electric wires involves work on a pole, which has the disadvantage of always being exposed to the risk of falling accidents.

(Object of the Invention) In view of the above-mentioned conventional situation, the object of the present invention is to provide a safe method of laying electric wires that does not require work on a pole, and a hollow utility pole that realizes the method.

(Means for solving the problem) The present invention is a hollow column with a hole at the top, the hole is located close to the ground level when the column is erected, and an electric wire is placed inside the hollow column in the hole. Using a utility pole having a connection device storage part, push up the lead wire through the inside of the utility pole from the opening in the utility pole toward the top of the utility pole, and after extending the lead wire from the top to the outside of the utility pole, The electric wire can be laid on the ground by connecting the electric wire to the end of the lead wire, pulling it into the electric pole, and connecting the electric wire to a wire connecting device installed inside the electric pole. .

In addition, a cover is provided for the opening of the utility pole, and a trumpet-shaped tube is provided at the edge of the utility pole at the top to prevent damage to the wires when the wires are drawn in. A lid may be provided.

(Function) The present invention is a hollow column with a hole at the top, and by having the hole at a position close to the ground when the column is erected, it becomes possible to perform the above-mentioned work of laying electric wires on the ground.

Furthermore, if a trumpet-shaped tube is provided at the top to prevent damage to the wires when the wires are drawn in, it is possible to prevent damage when the wires are drawn in and to make the wiring direction flexible.In addition, if a lid is provided at the top, the upper This prevents foreign objects from entering the pole. In addition, by providing a pipe attachment part for laying underground electric wires in the underground part, it becomes possible to lay electric wires from underground to the utility pole, and by attaching a cover to the opening, it is possible to connect the electric wire connecting device installed inside the utility pole to a third place. It is possible to prevent people from causing harm.

(Example) Fig. 1(a) is an overall view of the utility pole of the present invention, and Fig. 1(b)
is a top view of the xx' section of the top of the utility pole, Figure 1 (C)
FIG. 2 is an enlarged perspective view of the top of the utility pole.

As shown in Figure 1(a), the utility pole body (1) is a cylindrical hollow pole, and has an opening near the ground level when the pole is erected.
The structure includes a wire connecting device storage section (2) inside the utility pole main body at the position of the opening.

Furthermore, in this embodiment, a trumpet-shaped tube (4) is attached to the top of the utility pole (3).
), a top cover (5), and a top cover support rod (6), and a pipe attachment part (7
) has been established. The trumpet-shaped tube (4) and the top lid (5)
When viewed from above, as shown in Figure 1(b), the diameter of the trumpet-shaped tube (4) is larger than the diameter of the top lid. (4) and the top cover (5) are removable from the utility pole body, the trumpet-shaped tube has a constriction in the center, and the top cover has a top cover support rod (6) attached that can move up and down. (5) is provided.

Fig. 2 is a diagram for explaining the electric wire connecting device storage section (2), and the inside of the electric wire connecting device storage section (2) is as shown in Fig. 2 (a). 8), hardware (11) to support and fix the wire connection terminal box (10), and hardware (11) to support and fix the electric wire wired from the top of the utility pole to the top of the wire connection terminal box (10). 12). Note that the electric wire laying pipe (8) and the underground electric wire laying pipe attachment part (7) are removable. FIG. 2(b) is a top view of the cross section taken along YY' in FIG. 2(a). Here, the same numbers as in FIG. 2(a) refer to the same items. FIG. 2(c) is an external view when the aperture of the electric wire connecting device housing (2) is closed with a lid, and the lid has a locking key (13), An aperture reinforcing plate (14) is attached to the portion of the edge that contacts the lid. FIG. 2(d) is a top view of the cross section taken along line zz' in FIG. 2(c). Here, the same numbers as in FIG. 2(C) refer to the same parts. Next, a method of laying electric wires using the above-mentioned utility poles will be described. Fig. 3 is a diagram for explaining the electric wire laying method. First, as shown in Figs. 1 and 2, a utility pole (1) with a top portion, a wire connection device housing portion, and an underground portion formed is made. , erect this utility pole (1).

Next, place the wire connection terminal box (
10), and at the same time, lay and connect the electric wire from underground through the electric wire installation pipe to the electric wire connection terminal box. Push up the lead wire through the inside of the pole from the opening in the pole toward the top of the pole (Figure 3 (a)), and then push the lead wire (30) up.
Extend the electric wire from the top to the outside of the utility pole, drop it to the ground, and connect the electric wire (31) to the end of the lead wire (Fig. 3(b)).
1) (Fig. 3 (b)), and after securing the electric wire (31) installed in the utility pole (1) to the hardware (12) that supports and fixes it, place the electric wire (31) into the electric wire connection terminal box ( 10).

(Effects of the Invention) With the utility pole and the wiring method using the pole as described above, it is possible to connect electric wires on the ground without having to do it on the pole, and it is possible to prevent falling accidents that occur during conventional pole work.

[Brief explanation of the drawing]

Figure 1 is an overall view of the present invention and a diagram for explaining the top part.
The figure is a diagram for explaining the electric wire connecting device storage part, FIG. 3 is a diagram for explaining the electric wire laying method of the present invention, and FIG. 4 is a diagram showing the conventional electric wire laying state. 1 - Utility pole main body, 2 - Wire connection device housing 3 - Top of utility pole, 4 - Trumpet-shaped tube 5 - Top cover 6... Top cover support rod 7 - Tube attachment part 8 for laying underground electric wires ...-Electric wire laying pipe 9--Hardware 1 for supporting and fixing the electric wire laying pipe (L---Wire connection terminal box 11--...Hardware 12-- for supporting and fixing the electric wire connection terminal box)
・Hardware for supporting and fixing electric wires routed from the top of the utility pole 13-・Lock key 14-Aperture reinforcement plate

Claims (3)

[Claims] (1) It is a hollow column with a hole at the top, the hole is located close to the ground level when the column is erected, and the hollow column has an electric wire connection device storage section inside the hole. A hollow telephone pole. (2) A hollow utility pole according to claim 1, characterized in that a trumpet-shaped tube is provided at the top, and a top cover that is movable up and down is provided. (3) push up the lead wire through the inside of the utility pole from the opening of the utility pole toward the top of the utility pole, bring the lead wire out from the top of the utility pole, and then drop it to the ground;
A method for laying electric wires using a hollow utility pole, comprising: connecting an electric wire to the end of the lead wire, drawing it into the utility pole, and connecting the electric wire to a wire connecting device installed in the utility pole.