JPH036126Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention installs a rust preventive agent on the tie-down parts of overhead power distribution lines, and dissolves the rust preventive ingredients into the overhead power lines along with rainwater to prevent stress corrosion and disconnection. The present invention relates to a mounting tube for the rust preventive agent used in the rust preventive method.

<Prior art> The applicant has filed Japanese Patent Application No. 56-159305 (Japanese Patent Application No. 159305-
No. 63018), ``It is possible to connect the opening/closing surface or dividing surface along the axial direction so as to be openable/closable or divisible;
Two half-split cylinders, which become cylinders when connected, are spaced apart from each other, and the surfaces in contact with the rust preventive composition described below are inclined toward the central axis of the cylinders, and the outer surface Two partition plates that are inclined toward the excavation part and are provided with the opening/closing surface or the dividing surface as boundaries, and a barrier filled in a divided area surrounded by the two partition plates and the cylinder body. The cylinder is made of a rust agent composition, and has a cut-out portion formed by carving out both ends of the cylinder to the top surface of the partition plate or close to it, and a hanging device for the two half-shaped cylinders, built into the cylinder; The present invention has proposed a rust preventive composition mounting device in which an appropriate number of notches are provided on the inner edge of the partition plate and, if necessary, projections are provided on the inner surface of the cylinder of the rust preventive composition filled portion.

<Problems with the prior art> By the way, in the actual use of the proposed rust preventive composition mounting device (tube), the filled rust preventive composition must not fall off, and as a test method, the rust preventive composition was tested. A test was conducted to see if the rust preventive composition would fall out of the tube when the tube was dropped from a height of 15 m while the tube was filled.

In this test, the rust preventive composition did not fall off immediately after being filled into the instrument, but as the rust preventive composition dried, some of it began to fall off.

When these items are carefully observed, rust preventive composition a has shrunk on drying, as shown in FIG. That is, as shown by the arrow in the figure, the rust preventive composition a is originally trying to shrink toward the center of the cylinder 2, but as shown in FIGS. 9 and 10, due to ease of mold removal, Since all the protrusions 7 protrude in the drawing direction, the protrusions 7 near both edges of the half-cylindrical body 2 stand up against the shrinking direction of the rust preventive composition a. On the other hand, the protrusion 7 at the center stands along the center direction, so when the rust preventive composition a contracts, it is pulled from both sides, the center rises, and the rust preventive composition a a
As a result, it becomes easy to fall off.

<Purpose> The present invention was created in view of the above problems, and an object of the present invention is to provide a tube for installing a rust preventive composition in which the rust preventive composition will not fall off.

<Structure> In order to achieve the above object, in this invention, in the conventional rust preventive composition mounting tube,
A rust preventive agent holding protrusion is provided on the inner surface of the cylinder in a divided area surrounded by the cylinder and the partition plate in a direction inclined with respect to the axis.

With this structure, when the rust preventive composition tries to contract, the projections are inclined with respect to the direction of contraction, so that the projections reliably support the composition against the contraction force.

<Example> Hereinafter, an example of a mounting tube (hereinafter simply referred to as mounting tube) for the rust preventive composition of the present invention will be described.

1 to 8, the mounting tube 1 of the present invention includes two half-split cylinders 2 connected by a hinge 5 so as to be openable and closable, and two partitions each provided near both ends inside the cylinders 2. It consists of a plate 3, a rust preventive composition filling area 4 surrounded by the two partition plates 3 and the cylinder 2, and latching devices 11 and 12 integrally formed on the cylinder. The two half-split cylinders 2 form a storage case for the rust preventive composition a by combining them, and when combined, they form a cylinder shape as shown in Figures 1 and 2. . Although the shape in FIGS. 1 to 4 is cylindrical, there is no problem in practical use even if the shape is polygonal.

The material of the mounting tube is electrically insulating, has appropriate strength and flexibility, and is required to be weather resistant since it will be used outdoors. Examples of materials that meet the above conditions include polyethylene, crosslinked polyethylene, polypropylene,
Plasticizers, carbon black, stabilizers, ultraviolet absorbers, anti-aging agents, fillers, etc. commonly used in plastics such as polyvinyl chloride, ethylene-vinyl acetate copolymer, and ethylene-ethyl acrylate copolymer are appropriately blended. Admixtures are used.

A cut-out part 6 is provided at both ends of the mounting tube 1, spanning the opening/closing part of the cylinder body 2, and when you want to open the mounting tube, you can hook your finger on the cut-out part and pull it. The reason for this is that the mounting tube can be opened easily, and the outer surface of the partition plate 3 has the above-mentioned cutout part 6.
Since it is tilted toward the upper part of the cylinder body 2, most of the rainwater that has entered the upper part of the cylinder body 2 flows out of the mounting tube 1 from the cutout part 6. Therefore, it is necessary to cut out the cutout portion 6 to the extent that it reaches the upper surface of the partition plate 3. Further, the shape of the cut-out portion 6 may be any shape as long as the above-mentioned purpose can be achieved.

The partition plates 3 are provided one each near both ends of the half-split cylinder 2, and when the cylinders are combined together, a wire passage opening 9 through which the overhead power distribution line 8 passes is formed in the center. An appropriate number of notches 10 are provided on the inner edge of the wire passage opening 9. This notch serves to introduce the required minimum amount of rainwater that has entered the upper part of the cylinder into the rust preventive composition, and also to ensure that when it is installed on the overhead power distribution line 8, it can be installed easily by utilizing the elasticity of the partition plate 3. This is what I did. Therefore, the shape and dimensions of the notch 10 in the partition plate 3 are not particularly limited as long as they match the purpose.

In order to easily attach the mounting tube to the overhead power distribution line 8, the thickness of the partition plate 3 is made gradually thinner as it approaches the wire passage opening 9.

The inner surface of the partition plate 3 is axially inclined outward. This is so that the rainwater introduced through the notches in the partition plate 3 does not flow along the surface of the overhead power distribution line 8, but instead flows along the axially inclined surface. The purpose is to uniformly elute the rust-preventive components in the rust-preventive composition, and the rainwater containing the rust-preventive components is transported to overhead distribution lines by the axial tilt of the lower partition plate 3. The aim is to inject anti-corrosion components into the insulator of the distribution line 8 without waste.

On the inner surface of the cylindrical body 2 of the rust preventive composition filling area 4 of the mounting tube 1, a rust preventive holding protrusion 7 is provided which faces in a direction oblique to the axis. The direction of inclination of the protrusion 7 may be set appropriately, for example, as shown in FIGS. 4 to 6, or as shown in FIGS. 7 and 8.
If the inclination is at this level, the protrusion 7 is rod-shaped and can be cut out. This structure is to prevent the rust preventive composition a from falling off, and when the rust preventive composition a sticks to the protrusion 7 and contracts, the rust preventive composition a is prevented from falling off. Since the direction of protrusion and the direction of contraction thereof are different, the projections 7 oppose the direction of contraction and prevent the composition a from falling off.

The latching device for the cylindrical body opening/closing portion of the mounting tube 1 is built into the cylindrical body in a state in which the latching is completed. This is intended to improve tracking resistance by eliminating irregularities in the outer shape and suppressing the adhesion of salt and the like (see Figures 4 and 5).

In addition, in the embodiment, the two-piece cylinders are fitted together using a hinge and a latching device, but they may be fitted together only using a latching device.

It will be understood from the above explanation that the problems of the conventional product have been solved.

<Effects> This invention is constructed as described above, and the protruding direction of the holding protrusion is made different from the shrinking direction of the rust preventive composition, so that the holding protrusion supports against the shrinkage force of the rust preventive composition. The action is reliably maintained and the rust preventive composition does not fall off the tube even when it dries.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an example of the use of an embodiment of the rust preventive composition-mounted tube of this invention, Fig. 2 is a plan view of the embodiment of Fig. 1, and Fig. 3 is the electric wire of Fig. 1 removed. Fig. 4 is an open front view of the one in Fig. 2, Fig. 5 is a plan view of Fig. 4, Fig. 6 is a partial sectional view of Fig. 5, and Fig. 7 is an open front view of the one in Fig. 2. FIG. 8 is a partially sectional view of FIG. 7, FIG. 9 is an open front view of the conventional mounting tube, and FIG. 10 is a partially cutaway plan view of FIG. 9. It is. DESCRIPTION OF SYMBOLS 1... Rust preventive composition mounting tube, 2... Cylindrical body, 3... Partition plate, 4... Composition filling area, 7...
...Holding protrusion, 8...Electric wire.

Claims (1)

[Scope of utility model registration request] An opening for passing electric wires is formed in the center of the cylindrical body, which extends axially near both ends of the interior of the cylindrical body, which can be opened and closed or divided by an opening/closing surface or a dividing surface along the axial direction. Two partition plates with an appropriate number of notches formed in the direction are provided with the opening/closing surface or the dividing surface as the border, and the inner surface of the cylinder in the compartment area surrounded by the cylinder and the partition plates is provided with an axis along the axis. A rust preventive composition mounting tube comprising a rust preventive agent holding protrusion in a direction inclined to the opposite direction.