JPH0416577Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention supports electric wire cables, attaches various devices such as transformers, and supports cables rising from underground and branching of various cables. This relates to telephone poles used for.

(Prior Art) Conventionally, this type of utility pole has been a reinforced concrete pole.

(Problem that the invention aims to solve) When considering environmental harmony in cities, it is important to
It is desirable that this type of utility pole be as compact as possible in areas where the conditions have been met and maintained, such as areas where construction has been completed. It is also important that the construction and maintenance of pillars can be easily performed, and that it can be adapted to be installed underground.

In this respect, existing reinforced concrete columns have various problems.

In other words, when supporting a stand-up cable or attaching various types of equipment, it is necessary to pass appropriate bands around the outer circumference of the column, and since the stand-up cable is attached to the column in an exposed manner, This was not only undesirable in terms of protecting the cables, but also led to the enlargement of utility poles, which went against the trend of compactness. Furthermore, since the column itself is made of concrete, there are various restrictions on the means for fixing the metal fittings used to attach various devices to the column.

(Means to solve the problem) Therefore, this idea was to solve the problem by using a hollow steel pipe as the column body, and in addition, the above-ground part of the column has a cable outlet and an underground part. The cable outlet is provided with a cable inlet, and a cable fixing device having the following structure is provided at each cable outlet.

That is, a receiving member whose ends are attached to the peripheral edge of the cable outlet is obliquely fixed to a substantially inverted U-shaped upper plate, and a holding member forming a cylinder facing the receiving member is fixed at both ends thereof. It is fixed to the receiving member by tightening and loosening bolts, and this upper plate is fixed to the upper half of the periphery of the cable outlet, and furthermore, a roughly U-shaped lower plate with a vertically halved guide tube fixed diagonally is attached. , the curved surface of the guide tube is substantially continuous with the curved surface of the holding member, and the guide tube is fixed to the lower half of the periphery of the cable outlet, and the lower part of the guide tube covers at least the periphery of the cable outlet;
In addition, the lower end of this guide tube is bent downward into the columnar body.

(Function) Since the column is in the air, cables rising from underground will pass through the column, and the cables will enter and exit through the cable outlet and cable inlet, respectively.

Thus, the cable fixing device has the function of locking and fixing the rising cable by means of the holding member. Furthermore, since the column itself is made of steel, a wide variety of mounting fittings and means for fixing the mounting member to the column can be selected from a wide range of options, including welding, riveting, bolting, and the like.

The receiving member and the guide tube in the cable fixing device prevent the cable from being damaged by the periphery of the cable outlet when the cable is pulled in or pulled out. In addition, the lower end of the guide tube is bent downwards within the column, so
There will be no damage at the bottom end of the guide tube. Moreover, the holding member is shaped like a cylinder facing the receiving member, and is bolted to the receiving member at both ends, so it can be attached to the receiving member even after the cable has been passed through the column. be.

(Example) Hereinafter, an example of this invention will be described with reference to the drawings.

Figures 1 and 2 are a front view and a right side view, respectively, of a steel pipe column according to an embodiment, where 1 is a column made of a hollow steel pipe, and 2 is a column made of polyethylene that is crowned on the top of the column 1. The cap, 3 is a ventilation hole, 4 is a cable connection port, and 5 and 6 are connection fittings, and as shown in detail in Figures 3 to 6, both are metal fittings with a substantially U-shaped cross section. The connecting body fixture 5 is for the upper part, and the same 6 is for the lower part, and both are fixed to the column 1 by welding. Further, a notch 5a is formed in the upper part of the connection body fixture 5, and this notch 5a
The connecting body is attached to the column 1 by inserting the metal fittings of the connecting body (not shown) into the column and by locking the bottom of the connecting body to the connecting body mounting tool 6.

Reference numeral 7 designates a primary cable saddle, which is used by having bolt members 7a and 7b arranged at both ends as shown in FIG. 7, and fixing the cable 8 and rubber packing 9 together to the column 1.

10 is a messenger wire retaining device, which connects a roller 10a with two arms 10b and 10b, as shown in FIG.
It is constructed by fixing the shaft between the arms 1 and 10c.
0b and 10c are welded and fixed to the outer peripheral side surface of the column 1. Reference numerals 11 and 12 indicate transformer fittings having the same configuration and relationship as the connection body fittings 5 and 6.

Reference numeral 13 denotes a cable fixing device, and its structure is such that, as shown in FIGS. 9 and 10, a receiving member 15 is obliquely fixed to an approximately inverted U-shaped upper plate 14, and a holding member 16 is attached to both ends of the receiving member 15 from above. This is tightened with a releasable bolt, and is fixed around the cable outlet 17 with pan head machine screws 18 so as to cover the upper half of the cable outlet 17 bored in the column 1. . Further, a substantially U-shaped lower plate 20 to which a vertically halved guide tube 19 is fixed diagonally is arranged so that its opening faces the upper plate 14 and covers the lower half of the cable outlet 17 to guide the cable. It is fixed around the lower half of the outlet 17 with a pan head machine screw 21.

Reference numeral 22 denotes a lead-in guide tube provided around the cable lead-in port 23, as shown in FIG. Also 2
Reference numeral 4 denotes a base plate which is designed to receive the bottom of the column 1 at an eccentric position to prevent the column 1 from sinking and to facilitate the erection work.

Note that 25 is a high-voltage branch cable saddle, and 26 is a work scaffold attachment hole.

The embodiment has the structure as described above, and its usage state is shown in the rear view in FIG. 12 and the right side view in FIG. 13. As is clear from the figure, most of the rising cable 27 is housed inside the pole body 1, and there is no band body like in the past, so the pole is compact as a whole. ing.

(Effects of the invention) As is clear from the above embodiments, according to this invention, the rising cable is first passed through the inside of the column, which not only protects the cable, but also protects the rising cable from existing concrete pillars. There is no need for a protective tube or a band to fasten it to the pole, making the pole more compact and further improving safety for pedestrians. Of course, safety is ensured by the built-in cable, and since the column itself is made of steel, there is a wide range of options for fixing various equipment fixtures to the column, and it is not limited to bands as in the past. Holes for mounting scaffolding can also be easily provided.

On the other hand, the cable outlet is equipped with a cable fixing device that has a holding member that can be tightened and loosened. You can easily adjust the height.

Moreover, the receiving member and the guide tube of the cable fixing device prevent the surface of the cable from being damaged by the periphery of the cable outlet when the cable is pulled in or pulled out. Further, since the lower end of the guide tube is bent downward into the column, the lower end of the guide tube will not be damaged. Therefore, when the cable is pulled in or pulled out, the cable is not damaged and these operations can be carried out smoothly.

Furthermore, after the cable is pulled in in this manner, the receiving member can be tightened and fixed, making the work easier.

It goes without saying that the underground section is also equipped with a cable entry port, so it is fully compatible with underground installations.

[Brief explanation of the drawing]

Each figure is a diagram of an example. Figure 1 is a front view of the example, Figure 2 is a right side view of the same, and Figure 3 is a connection body fixture fixed to the column used in the example. Fig. 4 is a side view of the same, and Fig. 5 is a plan end view of the vicinity of the connection body fixture showing the situation, and Fig. 5 is the other connection showing how the other connection body fixture is fixed to the column used in the example. 6 is a side view of the same, and FIG. 7 is a plan end view of the vicinity of the primary cable saddle, showing how the primary cable saddle is fixed to the column used in the example. FIG. 8 is a plan end view of the vicinity of the messenger wire anchoring device, showing how the messenger wire anchoring device is fixed to the column used in the example, and FIG. 9 is a front view of the cable fixing device in the example. , FIG. 10 is a side view of the same, FIG. 11 is a side sectional view of the vicinity of the cable entry port in the embodiment, FIG. 12 is a rear view showing the usage state of the embodiment, and FIG. 13 is a left side view of the same. In the figure, 1 is a column, 13 is a cable fixing device, 14 is an upper plate, 15 is a receiving member, 16 is a holding member, 17 is a cable outlet, 19 is a guide tube, 20 is a lower plate, and 22 is a retraction guide. tube,
23 is a cable entry port.

Claims (1)

[Scope of Claim for Utility Model Registration] Cable outlets are drilled at appropriate locations in the above-ground portion of a column made of hollow steel pipes, and cable outlet ports are drilled at appropriate locations in the underground portion. A cable fixing device having a holding member that can be tightened and loosened by a tightening member is installed at the cable outlet,
This cable fixing device obliquely fixes a receiving member whose end extends to the peripheral edge of the cable outlet to an approximately inverted U-shaped upper plate, and a holding member forming a cylindrical body facing the receiving member. The upper plate is fixed to the receiving member by tightening and loosening bolts at both ends, and the upper plate is fixed to the upper half of the periphery of the cable outlet, and a guide tube split vertically in half is fixed diagonally to the U.
The lower plate is fixed to the lower half of the periphery of the cable outlet so that the curved surface of the guide tube is substantially continuous with the curved surface of the holding member, and the lower part of the guide tube is attached to at least the periphery of the cable outlet. A steel pipe column configured as above and characterized in that the lower end of the guide tube is bent downward into the column.