JPH02296976A - Cap for electric pole - Google Patents

Abstract

PURPOSE:To improve the mounting workability by alternately providing recessed and protruded wall surface parts with a predetermined space in a peripheral side wall and insertion holes of a tightening band in outer surfaces of the protruded wall surface parts and separating the recessed wall surface parts by hollowed grooves in an upper part wall. CONSTITUTION:By using polyethylene resin as a material, a peripheral side wall 3 is provided to be hung in the peripheral edge of a circular upper part wall 2 of a cap body 1. While in outer surfaces of the wall 3, recessed and protruded wall surface parts 3a and 3b are formed by stepped parts 5, 5, and hollowed grooves 7 are provided to the periphery in the wall 2. The respective surface parts 3a are cut off with the grooves 7 serving as a start point, and the cap body 1 is crowned on the top part of an electric pole P, with a tightening metal fixture B of a ground wire mounted and tightened by tightening bolts F, F, thereafter the cap body 1 is tightened and fixed by inserting a tightening band G into holes 6 to be turned around. Accordingly, the mounting workability can be improved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention aims to prevent the top concrete of a hollow concrete utility pole from falling off due to deterioration.
This relates to a cap that is placed on the top.

[Conventional technology]

Conventional utility pole caps of this type include, for example,
As seen in Publication No. 0-19642, a type having an outer circumferential side wall hanging down from the periphery of a circular upper wall is known.

[Problem to be solved by the invention]

Conventional utility pole caps with this shape are difficult to use unless they are sized to match the top of the utility pole; if the cap is smaller, it will not fit, and if the cap is larger, it will be difficult to use. Easy to fall off.

Further, when attaching a ground wire, which is a type of lightning rod, to the cap, the outer circumferential side wall of the cap may get in the way when attaching the connecting post metal fittings, impeding the workability of the attachment.

Therefore, an object of the present invention is to provide a utility pole cap that solves these problems.

(Means for Solving the Problems) The utility pole cap of the present invention has a cap body having an outer circumferential side wall hanging from the periphery of a circular upper wall, and the outer circumferential side wall is provided with stepped portions at predetermined intervals. A concave wall surface portion and a convex wall surface portion are formed alternately, and a plurality of insertion holes are provided on the outer surface of the convex wall surface portion to support the tightening hand. A cutout 91 is provided at a length corresponding to the width, and the recessed wall surface portion is configured to be easily separated from the cutout groove as a starting point.

[Effect]

The utility pole cap of the present invention can be attached even if the size of the cap is smaller than the top of the utility pole by cutting off the concave wall surface portions starting from each hollowed out groove and attaching them to the top of the utility pole. Then, place the connecting post fittings of the ground wire in the cut off portion of the concave wall surface, and insert the band from the top surface of these connecting post fittings into the insertion holes provided in the convex wall surface of the outer circumferential side wall of the cap, and rotate the tightening band. and tighten it to fix it.

In addition, if the ground wire connecting post fitting is straight without bending or the bent part does not get in the way, the cap can be used by positioning the connecting post fitting on the concave wall surface without cutting off the concave wall surface. It is possible to do this.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a cap body made of flexible polyethylene resin, with an outer peripheral side wall 3 hanging from the periphery of a circular upper wall 2.

On the inner surface of the outer circumferential side wall 3, a plurality of protrusions 4 are formed at intervals and in the same number, each having a horizontal upper surface, an inclined lower surface, and a thinner cross-sectional shape toward the tip. Further, step portions 5, 5 are provided at equal intervals on the outer surface of the outer peripheral side wall 3, and a concave wall surface portion 3a is formed between the step portions 5, 5.
A convex wall surface portion 3b is formed between the concave wall surface portions 3a, 3a, and a tightening band G is attached to each of these convex wall surface portions 3b as shown in FIG.
An insertion hole 6 is provided through which the holder is inserted and supported. In addition, each concave wall surface part 3
A is formed slightly thin so that it can be easily cut off.

On the other hand, a hollow groove 7 is provided in the upper wall 2 at a length corresponding to the width of each concave wall surface part 3a near the outer periphery located above each concave wall surface part 3a. Concave wall portion 3a
It is configured such that it can be easily cut off along the stepped portions 5, 5.

Next, an example of use of the utility pole cap A of the present invention will be described.

FIG. 5 shows a structure in which four open portions 8 are provided by cutting off the concave wall surface portion 3a along the stepped portions 5.5 with each hollowed groove 7 as a starting point.

The utility pole cap 8 provided with the open portion 8 in this manner is attached to the top of the concrete utility pole P as shown in FIG.

In the same figure, B is a connecting post fitting for the ground wire, and the insulator C is attached to the upper part, and the four supporting legs are also expanded into a truncated conical shape at the lower part, and each of the expanded supporting legs is The two parts are connected by connecting pieces E and H, respectively, and tightened by tightening bolts F and F. Attach this connecting pole fitting B to the top of the utility pole so that each support @D is located at each opening 8 to the cap with each tightening pole) F and F loosened, and tighten the tightening pole) F and F. Tighten to fix. Then, the attachment of the cap A is completed by inserting the tightening band G into each of the through holes 6 in sequence from above each support leg and rotating it around to tighten it.

In addition, as shown in FIG.
It can be used by attaching it to the top of a telephone pole without cutting off part a, that is, with the shape shown in FIG. 1 intact. In such usage conditions, the cap A can also be stabilized by positioning each support leg on the concave wall surface portion 3a.
Further, the step portion 5.5 can prevent the support leg from shifting, and the installation can be performed with good workability.

〔Effect of the invention〕

As described above, the utility pole cap of the present invention can be easily attached to the top of a utility pole by cutting off the plurality of concave wall surfaces provided on the outer circumferential side wall starting from the upper wall to provide an open section. Even if the inside diameter of the cap is smaller than the diameter of the top of the utility pole, it can be attached with great flexibility, and these can be opened while the cap is attached.

Each support leg of the connecting post metal fitting can be positioned on the release part and firmly fixed for use. In addition, the concave wall portions can be used without cutting them off, and in this case, by positioning each support leg of the joint post fitting on each concave wall portion, it can be used stably and with good workability. It can be used flexibly not only when the diameter of the top of the telephone pole and the diameter of the cap match, but also when they do not match.

[Brief explanation of the drawing]

The figures relate to one embodiment of the present invention; FIG. 1 is a perspective view;
Fig. 2 is a plan view, Fig. 3 is a sectional view taken along line A--A in Fig. 2, Fig. 4 is an enlarged sectional view of section B in Fig. 3, and Fig. 5 is an open section after cutting off each thin part. FIG. 6 is a plan view of the same as above, and FIGS. 7 to 8 are perspective views showing the state of use. DESCRIPTION OF SYMBOLS 1... Cap body, 2... Upper wall, 3... Outer peripheral side wall, 3a... Concave wall surface part, 3b... Convex wall surface part, 5.
5...Step part, 6...Insertion hole, 7...Drilling groove. Patent applicant Chubu Electric Power Co., Ltd. Figure 3 Figure 4 Figure 7 0 units

Claims (1)

[Claims] In a cap body in which an outer circumferential side wall is vertically disposed on the periphery of a circular upper wall, steps are provided at predetermined intervals on the outer circumferential side wall to alternately form concave wall surface portions and convex wall surface portions. A plurality of insertion holes are provided on the outer surface of the part to support the tightening band, and a hollow groove is provided in the upper wall at a position near the outer periphery with a length corresponding to the width of the concave wall surface part, and this hollow groove is the starting point. A utility pole cap configured such that the recessed wall surface portion can be easily separated.