JPS5985969A - Working rod for hot-line job of power transmission wire - Google Patents

Abstract

PURPOSE:To accomplish a specific work safely even on a steel tower poor in the footing with an easy adjustment of the length of a working rod as desired made possible by loosely inserting into a short rod a stop material comprising an insertion part with the sectional area thereof gradually increasing from the tip to the base end thereof and a grip part connected to the insertion part in such a manner as to be free to slide. CONSTITUTION:When cleaning an insulator, a working rod 1 is reduced and pulled upto a steel tower. Then, rods 1b and 1c are pulled out from rods 1a and 1b to be stretched to the appropriate length and stop material 3 is forcibly inserted between the rods 1a and 1b and 1b and 1c holding a grip section 3b. Here, the sectional area of the insertion part 3a increases gradually from the tip to the base end as mentioned above, a wedging action that causes the stop material 3 to be inserted between the rods to connect them firmly by a slide contact friction. Thus, after the working rod 1 is adjusted to the desired length, a worker holds the rear end of the working rod 1 to bring a cleaner 2 at the tip thereof whereby an insulator 4 is cleaned up.

Description

[Detailed Description of the Invention] The present invention relates to a working rod used when performing live line work such as cleaning insulators on power transmission line towers and detecting defective insulators, and the length of which can be easily adjusted according to working conditions. It has been made possible.

For live line work such as cleaning insulators on power transmission towers and detecting defective insulators, work equipment such as cleaning devices and defective insulator detectors are attached to the tip of long work rods made of electrically insulating material. This is done by the worker holding the rear end of the work rod, touching the work equipment to the insulator, and operating the work rod, but since the distance from the worker's position on the tower to the work position is not constant, , the length of the working rod must be changed appropriately depending on the distance. Conventionally, the length of the working rod can be changed by forming the working rod by connecting several short rods and increasing or decreasing the number of connected rods, or by preparing a variety of working rods of different lengths and changing them as appropriate. There were methods to replace the parts, or to have the worker move and change the working position, but both methods were complicated and had problems with safety and workability when carried out on steel towers with poor footing.

The present invention has been made in consideration of these points, and includes a plurality of short hollow rods having different diameters that are slidably inserted and connected to each other, and the cross-sectional area of the short rods is A retaining member having an insertion portion that gradually increases is slidably loosely fitted, and this retaining member is forcibly inserted between the inner circumferential surface of a large-diameter short rod and the outer circumferential surface of a small-diameter short rod connected thereto. By doing so, both short rods are firmly connected by the wedge action, and by doing so, the length of the working rod can be easily adjusted.

Hereinafter, the present invention will be described in detail with reference to the drawings, taking as an example a working rod for cleaning insulators.

FIG. 1 is a side view of the working rod in a shortened state, and FIG. 2 is a side view of the working rod in an extended state.
A short hollow rod 1b with a medium diameter is slidably inserted into the short rod a, and a short rod IC with a small diameter is slidably inserted into the short hollow rod 1b, and a cleaning device is installed at the tip of the short rod IC. 2 is installed. 6. The rods 1a, lb, and lc are tapered rods, and the medium-diameter short rod 1b slides freely inside the large-diameter short rod lc, but is designed so that it cannot be pulled out from the large-diameter short rod 1a. , the small-diameter short rod 1a also slides freely within the medium-diameter short rod 1b, but is not pulled out from the medium-diameter short rod 1b. Reference numeral 3 denotes a retaining member that is slidably fitted into each of the short rods 1b and lc, and is made of an elastic material such as vinyl chloride resin, see FIGS. 3 and 4 below. I will explain while doing so.

The retaining member 3 consists of an insertion part 3a formed by tapering off a substantially cowl portion of a cylindrical body, and a short cylindrical grip part 3b connected to the insertion part 3a. The fingers gradually increase in size from the tip to the base. Also, the grip part 3
A cut groove 3c is formed extending from b to the base end of the insertion portion 3a, so that the stopper member 3 can be expanded and contracted. Also, the grip part 3b
The outer surface is knurled to prevent slipping. As mentioned above, the 6 rods 1'bXlc are tapered rods that taper from the base end to the tip.
Corresponding to the change in the outer diameter of c, the stopper 3 expands and shrinks due to its own elasticity and the action of the kerf 30 to form 6 rods 1b and IC.
Appropriate sliding contact.

The working rod 1 has the above-mentioned structure, and when cleaning the insulator, the working rod 1 is shortened as shown in Figure 1 and pulled up onto the steel tower, and the 6 rods 1b are removed.

Pull out 1c from the 6 rods 1a and lb and extend it to an appropriate length, and forcefully insert each stopper 3 between the 6 rods 1a and lb and lb and lc by gripping s3b. Here each stopper 3
As shown in 9 above, the thread of the insertion part 3a gradually increases from the distal end to the proximal end, and due to its wedge action, it is forcibly inserted between the six rods, and due to sliding friction, the six rods are Strongly connect. After adjusting the working rod 1 to the desired length in this way, the worker holds the rear end of the working rod 1 and cleans the insulator 4 by touching the cleaning device 2 at the tip to the insulator 4 ( (See Figure 5). Next, when you want to change the length of work rod 1,
Grip the grip part 3b of the fastening material 3 and pull out the fastening material 3 between the six rods, adjust the six rods to the desired length by sliding and expanding and contracting them, and forcefully insert the fastening material 3 between the six rods again. Bye.

After the cleaning work has been completed in this way, when moving to the next work site or descending from the steel tower to the ground, the working rod 1 is shortened again as shown in FIG. 1 for convenience of transportation.

As described above, the working rod 1 can be adjusted to a desired length by pulling out each short rod 1a, 1bXla by an arbitrary length and connecting them easily and firmly with each stopper 3.3, and the length can be adjusted to a desired length. You can expect improved work efficiency and work results.

FIG. 6 shows another embodiment of the present invention, in which the short rods 1a, lb', and 1C/c/c constituting the working rod 1' are non-tapered rods, the diameter of which is equal over the entire length. The retaining member 5 is composed of a cylindrical insertion portion 5a and a short cylindrical grip portion 5b connected to the insertion portion 5a. As the thickness gradually increases, the h-plane phase increases. Furthermore, this arrest 5
No cut grooves are formed in the first embodiment.

The handling of the working rod 1' and the stopper 5 is the same as that of the first embodiment, and the lengths are adjusted by expanding and contracting the six rods 1a', lb', and lc', and the lengths of the six rods 1a, 1b are adjusted. 'or lb'
, lc' are firmly connected by inserting a stopper 5 between them.

FIG. 7 shows still another embodiment of the present invention,
The main body member 6 also consists of an insertion part 6a and a grip part 6b, but the insertion part 6a is further branched into two parts 6a1 and 6a3, each of which is cut into a tapered shape and extends from its distal end to its proximal end. 7 gradually increases its cross-sectional area by ~1. 6C is a kerf. The handling of the main hook 6 is the same as that in each of the above embodiments, and its wedge action firmly connects the 6 rods.

The present invention can be further modified in various designs. For example, in each of the above embodiments, each working rod 1.1' is replaced by three short rods 1a, lb, lc and 1a', lb', IO2.
However, the number of short rods is not limited and may be short.
Instead, a defective insulator detector may be installed.

As explained above, the working rod according to the present invention has a number of hollow short rods of different diameters formed of electrically insulating material, which are slidably inserted and connected to each other, and are inserted into the short rods from the tip to the base end. The locking member, which consists of an insertion part whose cross-sectional area gradually increases as the direction increases, and a grip part connected to the insertion part, is slidably and loosely fitted, so the length of the working rod can be easily adjusted to the desired length. 81 and is extremely easy to use, allowing the designated work to be carried out safely even on a steel tower with poor footing.

[Brief explanation of drawings]

This figure shows an embodiment of the present invention, in which No. 1N is a side view in a contracted state, FIG. 2 is a side view in an extended state, and FIGS. Part fil!
The J-side view and FIG. 5 are side views of the device in use, and FIGS. 6 and 7 are side views of other embodiments of the present invention, respectively. 1.1. ,, working rods 1a, lb, lc. la, lb, 10'..., short rod 516...stop material 3a, 5a, 6a...insert @ 3b, 5b
, 6b, ・Grip section applicant Hei Co., Ltd., Roku Shokai agent Patent attorney Toshiyuki Takamatsu

Claims (1)

[Claims] A plurality of short hollow rods of different diameters made of an electrically insulating material are slidably inserted and connected to each other, and the short rod has an insertion portion whose cross section gradually increases from its tip to its base end; A working rod for working on live power transmission lines, in which a retaining member consisting of an insertion portion and a grip portion connected to the insertion portion is slidably and loosely fitted.