JP2594280Y2 - Auxiliary tool for extension roller attachment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary tool for mounting a wire extension roller used for low-voltage wire extension of an overhead distribution line on a support rack of a traction insulator.

[0002]

2. Description of the Related Art Conventionally, low-voltage wires (60
(0 V or less) is carried out as follows using a drawing roller. That is, depending on the positional relationship between the front and rear power poles, the extension wire extends inside the traction insulator, that is, on the utility pole side (inside extension), and the extension wire extends outside the traction insulator, that is, on the opposite side to the utility pole (outside). As shown in FIG. 8 (a), in each case, a wire extension roller 3 is attached to a support rack 2 that supports the traction insulator 1, and the following is performed.

That is, in FIG. 8 (a), the insulator 1 is attached between the two legs 2b, 2b of the U-shaped support rack 2 fixed to the telephone pole 4 at the center piece 2a. The extension roller 3 is attached to the base of the legs 2b, 2b of the U-shaped support rack 2 such that the rotation axis thereof is perpendicular to the axis of the insulator 1.
Attached by And the low piezoelectric wire 6 that is extended
Is drawn through the wire drawing route while rotating the wire drawing roller 3 attached in this way, and after the wire drawing is completed,
In the case of the inner extension, the electric wire 6 is fixed by removing the slack of the electric wire 6 and binding it to the insulator 1 as it is. On the other hand, in the case of the outer extension, as shown in FIG. 9A, the bolt 1a for fixing the insulator 1 to the support rack 2 is pulled out, the insulator 1 is once removed from the support rack 2, and the electric wire 6 is terminated. It is moved to a position outside the insulator 1. Next, the traction insulator 1 is fixed to the support rack 2 again, and the electric wire 6 which has been moved outward is temporarily fixed thereto. FIG.
The plan views shown in FIG. 9B and FIG. 9B show the electric wires 6 extended inward and outward, respectively.

[0004]

However, in such a conventional wire drawing method, the support rack 2 for the wire drawing roller 3 is not used.
Is limited to the inside of the insulator 1, as described above, it is only necessary to pass the electric wire 6 in the inner extension and bind it directly to the inside of the insulator 1, but in the case of the outer extension, The bolt 1a for fixing the insulator is pulled out, the anchor 1 is removed once, the wire 6 is moved outward, and then it is necessary to fix the anchor 1 again. Stopping must also be performed, requiring a lot of trouble and time, and there is a risk of dropping the traction insulator 1 during work.

[0005] Therefore, there is a need for the development of a wire roller mounting aid that can attach the wire roller to the outside of the traction insulator, thereby improving the workability and safety of the outer wire.

[0008] By the way, in addition to the extension rollers shown in FIGS. 8 and 9, there are also extension rollers having a different structure of the mounting bracket 5, and the above-mentioned auxiliary tool can be applied to any of these extension rollers. Is desirable.

As shown in FIG. 10, there is a case where a drop-in terminal box for branching and connecting a drop-in wire to a main line is attached to a leg piece 2b below the support rack 2; Countermeasures against such a terminal box 7 are also necessary. In other words, the support rack 2 to which the terminal box 7 for pull-in is attached must be capable of avoiding this and to which the extension roller can be attached, and the support rack 2 to which the terminal box 7 is not attached. In this case, the distance between the extension roller and the traction insulator 1 must be properly maintained.

The present invention has been made in view of such conventional circumstances, and enables the extension roller to be attached to the outside of the traction insulator, thereby improving the workability and safety of the outer extension wire. It is another object of the present invention to provide an extension metal fitting for the extension roller that can be used regardless of the type of extension roller and the presence or absence of a terminal box for drawing in.

[0009]

The auxiliary device for mounting a wire extension roller according to the present invention is a mounting portion which is detachably mounted on a tip of the horizontal leg of a support rack having a horizontal leg for supporting and fixing a traction insulator. And a horizontal piece for extending the horizontal leg piece connected to the mounting portion, which is an auxiliary tool for mounting a wire drawing roller, wherein the horizontal piece is provided with mounting hardware for a wire drawing roller at both end edges thereof. Engaging grooves for mating are provided to face each other, and distances a ₁ and a ₂ from the center line of the horizontal leg to both end edges, and the distance of the engaging groove from the center line of the horizontal leg It is characterized in that the distances b ₁ and b ₂ to each base are different from each other.

[0010]

In the auxiliary device for mounting the extension roller of the above construction, the horizontal leg is substantially attached to the outside of the landing insulator by attaching the mounting portion to the tip of the horizontal leg of the support rack for supporting and fixing the insulator. Thus, the extension roller can be supported outside the traction insulator. Therefore, even when the outer wire is extended to extend the electric wire to the outside of the insulator, it is not necessary to remove the insulator, temporarily fix the electric wire, and the like, and it is possible to quickly and safely perform the extension work.

Moreover, the horizontal piece that extends the horizontal leg piece is
Since the engaging grooves for engaging the fittings of the extension rollers are provided opposite to both end edges thereof, any type of extension roller having a generally different attachment structure can be attached. be able to. Further, as will be described in the embodiments described later, distances a ₁ and a ₂ from the center line of the horizontal leg to both end edges of the horizontal piece, and engagement grooves provided in the horizontal piece from the center line of the horizontal leg. Distances b ₁ , b to each base
₂ are different from each other, so by mounting the horizontal piece on the horizontal leg piece of the support rack with its front and back reversed, the position of the extension roller can be displaced in the width direction of the horizontal piece, and the pull-in terminal Even in the case of a support rack having a box attached, a wire extension roller can be attached while avoiding the lead-in terminal box.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a plan view showing an auxiliary device (hereinafter, simply referred to as an auxiliary device) for attaching a drawing roller according to an embodiment of the present invention,
FIG. 1B is a side view thereof, and FIG.
It is an enlarged view of the circle C part in (b). Further, FIG.
FIG. 7 to FIG. 7 are perspective views showing the use state of the assisting device of this embodiment.

As shown in these figures, the assisting device of this embodiment comprises a mounting portion 9 for an upper horizontal leg 8a of a support rack 8, which will be described in detail later with reference to FIG. 2, and a horizontal piece 10 connected thereto. Consists of

A notch 11a is provided at an edge of the main body 11 of the mounting portion 9 to engage with a bolt 12 for mounting a traction insulator, and upper horizontal leg pieces 8 of the support rack 8 are provided at both side edges.
A locking rib 11b for guiding the mounting direction with respect to a and for locking the mounting portion main body 11 to the upper horizontal leg piece 8a is provided upward. On the other hand, on the lower surface of the mounting portion main body 11, a stop lever 14 that can rotate and fix around the shaft portion 13 as necessary is provided.

The stop lever 14 has a base straight portion 14a extending from the shaft portion 13 in the radial direction, a front straight portion 14b extending from the front end thereof at an acute angle, and a front straight portion 14a.
b bolt 12 provided inside and engaged with the notch 11a
And has a concave curved surface 14c that engages with the second member. In addition, the base straight portion 1
A vertical piece 14 projecting upward is provided on the outer edge of the tip of 4a.
d is provided on the outer edge of the straight portion 14b at the tip thereof with an inclined piece 14e slightly inclined upward, and the shaft portion 1 is kept until the vertical piece 14d comes into contact with one side edge of the mounting portion main body 11.
By rotating about the center 3, the inclined piece 14 e enters the notch 11 a to prevent the rotation from returning, and the concave curved surface 14 c is locked by the bolt 12 engaged with the notch 11 a. Has become.

The shaft portion 13 includes a bolt 13a serving as a rotation shaft of the stop lever 14, a wave washer 13b engaged with the bolt 13a and in contact with the lower surface of the stop lever 14, an upper surface of the stop lever 14, and a mounting portion. A flat washer 13d, 13d interposed between the lower surface of the main body 11 and between the upper surface of the mounting portion main body 11 and the nut 13c;
Of the stop lever 14 by the spring action of
e can be introduced into the notch 11a.

On the other hand, the horizontal piece 10 connected to the mounting portion 9
A drawing roller (hereinafter referred to as A type) as shown in FIG. 10 or a different drawing roller (hereinafter referred to as B type) as described later can be attached, and the horizontal legs of the support rack 8 can be attached. When the horizontal piece 10 is mounted on the piece 8a with its front and back reversed, the position of the extension roller relative to the traction insulator is changed by a predetermined length.

That is, in the horizontal piece 10, distances a ₁ and a ₁ from the center line (shown by a dashed line in the figure) of the upper horizontal leg piece 8a passing through the axis of the bolt 12 to both end edges.
₂ is set to a ₁ <a ₂ . That is, a ₁ corresponds to FIG.
As shown in ( ₂₎ , the distance for positioning the B type extending wire roller 17B at a position where the roller portion 19B and the retaining insulator 16 do not come into contact with each other and the wire drawn from between them does not drop, a ₂ As shown in FIG. 7, a B-type extending roller 17B is connected to its
6 and the distance to be positioned at a position where it does not come into contact with the lead-in terminal box 20.

In addition, engaging grooves 10a and 10b for mounting the A type extension roller 17A are provided at both end edges.
Are provided, but each of these engagement grooves 10a, 10b
The distances b ₁ , b ₂ from the bottom of each of them to the center line of the upper horizontal leg piece 8a are also set to b ₁ <b ₂ . That is,
b _1, as shown in FIG. 6, A-type extension line roller 17
The A, distance to position the roller part 19A and the anchor insulator 16 and pull-in terminal box 20 and does not contact position and, b _2, as shown in FIG. 4, the extended line roller 17A of the A-type, the This is a distance for positioning the roller portion 19 </ b> A and the insulator 16 at a position where the roller insulator 19 </ b> A does not contact and the electric wire does not fall between them. Note that a ₁ , a ₂ ,
b ₁ and b ₂ are appropriately determined according to the size of the extension roller 17 and the terminal box for drawing in, respectively.

The horizontal piece 10 also has engaging grooves 10a, 1
Between 0b, a rectangular engaging hole 10c for mounting the B type extending roller 17B is provided slightly closer to one of the engaging grooves 10a.

In the present invention, examples of the material constituting the mounting portion main body 11, the stop lever 14, and the horizontal piece 10 include stainless steel and a steel material provided with a corrosion-resistant coating on the surface. Non-metallic materials can be used as long as they have the required mechanical strength and corrosion resistance.

As shown in FIGS. 2 and 3, the auxiliary device having the above structure is mounted with its front and back reversed, so that either of the case where the terminal box for pull-in is mounted and the case where it is not mounted is installed. In either case, even when using either the A type or the B type extended roller, it is necessary to place them at an appropriate position, that is, when the extension insulator 16 or the lead-in terminal box 20 contacts the extended roller. And at a position where the electric wire does not fall from between the extension insulator and the terminal insulator 16 or the extension terminal box 20 and the extension roller, the rotating shaft thereof can be supported and fixed so as to be perpendicular to the axis of the insulator 16. it can.

That is, as shown in FIG. 2, the support rack 8 to which the lead-in terminal box is not attached is fixed to the utility pole 15 at the center piece 8b and extends horizontally from both ends of the center piece 8b. Attachment bolts 12 are attached between the distal ends of the upper horizontal leg piece 8a and the lower horizontal leg piece 8c by mounting bolts 12.
The mounting rib 11 with the stop lever 14 positioned on the lower side, the notch 11a facing the upper horizontal leg 8a, and the locking rib 11b is inserted from the front end side while being guided by 11b, and when the mounting bolt 12 comes into contact with the end of the notch 11a, the stop lever 14 is rotated to make the front end straight portion 14
The concave curved surface 14c of FIG.

When the A-type extension roller 17A is used, as shown in FIG. 4, the fitting 18A of the extension roller 17A is engaged with the engagement grooves 10a and 10b of the horizontal piece 10 and fixed. And a B-type extending roller 17B
5, the engaging claw of the mounting bracket 19B of the extension roller 17B is inserted and fixed in the engaging hole 10c of the horizontal piece 10 as shown in FIG. Thus, the A-type extending roller 17A is used for positioning the extending roller 17A at a position where the roller portion 19A does not contact the retaining insulator 16 and the electric wire does not drop from between them. distance b ₂ in attached to a defined position, also extending line roller 17B of the B type, without contact with the roller unit 19B and the anchor insulator 16, and the wire from between them without falling because attached to a defined position at a distance a ₁ for positioning the Nobesen roller 17B in position, either extended line roller 17A, 17B also, anchor insulator 1
The rotation shaft is located at a position outside the roller 6 at a position where the roller portion 19 of each of the extension rollers 17 does not come into contact with the insulator 16 and no electric wire falls from between the roller portion 19 and the insulator 16. The insulator 16 can be supported and fixed so as to be perpendicular to the axis of the insulator 16.

As shown in FIG. 3, with respect to the support rack 8 to which the lead-in terminal box 20 is mounted, with the stop lever 14 facing upward, the mounting portion main body is made in the same manner as described above. 11 is attached to the upper horizontal leg piece 8a of the support rack 8, and then the drawing roller 17 is attached as shown in FIG. 6 or FIG. 6 shows the case where the A type extension roller 17A is attached, and FIG. 7 shows the case where the B type extension roller 17B is attached.
Type extension line roller 17A is attached to a defined position at a distance b ₁ for positioning the Nobesen roller 17A in a position with its roller portion 19A and the anchor insulator 16 and pull-in terminal box 20 does not contact, also , B type extension roller 17B is located at a position where the roller portion 19B does not contact the insulator 16, and the terminal box 20 for drawing.
Because attached to 7B defined position at a distance a ₂ for positioning the, in either case, the anchor insulator 16 outwardly mounted at an appropriate position that avoids the pull-in terminal box 20 indicated by a broken line.

As described above, in the assisting device of the above embodiment, the extension roller is moved to an appropriate position outside the traction insulator regardless of the presence or absence of the terminal box for drawing in and the type of the extension roller. Since it is possible to attach, it is not necessary to temporarily remove the insulation insulator or temporarily fix the electric wire when performing the external extension, and work quickly and safely as with the internal extension. Can be. Moreover, the attachment and detachment of the auxiliary tool to and from the support rack can be performed extremely easily.

In the above-described embodiment, in order to attach the B type extension roller 17B, the engagement hole 1
Although the structure is provided with 0c, it is also possible to substitute the action of the engaging groove 10c by changing the depth or the like of the engaging groove 10c.

[0028]

[Effects of the Invention] As described above, according to the extension roller mounting aid of the present invention, the extension roller is retained regardless of the type of the extension roller or the presence or absence of the terminal box for drawing in. Since it is possible to support the insulator at an appropriate position outside the insulator, it is possible to save time and labor when wires must be extended outside, and to remove the insulator Since no accidents occur, the efficiency of the extension work and the safety management can be remarkably improved.

[Brief description of the drawings]

FIGS. 1A and 1B are a plan view and a side view, respectively, showing an auxiliary member for mounting a wire drawing roller according to an embodiment of the present invention; FIG.
3 is an enlarged view of a circle C portion in FIG.

FIG. 2 is a perspective view for explaining a method of attaching the embodiment shown in FIG. 1 to a support rack.

1. FIG. 3 is a perspective view for explaining another method of attaching to the support rack of the embodiment shown in FIG.

FIG. 4 is a perspective view showing a usage example of the embodiment shown in FIG. 1;

FIG. 5 is a perspective view showing another example of use.

FIG. 6 is a perspective view showing still another usage example.

FIG. 7 is a perspective view showing still another usage example.

8A is a side view showing a method of extending a low-voltage wire of a conventional overhead distribution line, particularly an inner wire, and FIG. 8B is a plan view showing an inner extended wire.

FIG. 9A is a side view showing a conventional method of extending a low-voltage wire on an overhead distribution line, and FIG. 9B is a plan view showing an externally extended electric wire.

FIG. 10 is a front view showing a lead-in terminal box mounted on an overhead distribution line.

[Explanation of symbols]

 8 Support rack 8a Upper horizontal leg piece 9 Mounting part 10 Horizontal piece 10a, 10b Engagement groove 10c Engagement hole 11 Mounting part body 12 ... Bolts for mounting the insulator 13... Shaft 14... Stop lever 16... Insulator 17.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho-53-139593 (JP, U) Japanese Utility Model Sho-58-46212 (JP, U) Japanese Utility Model Sho-58-28509 (JP, U) Japanese Utility Model No. 6 62424 (JP, U) Jiko 44-3174 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02G 1/02 H02G 7/00 H01B 17/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A mounting portion detachably attached to a tip of the horizontal leg of a support rack having a horizontal leg for supporting and fixing a traction insulator, and extending the horizontal leg connected to the mounting. An auxiliary tool for mounting a wire drawing roller having a horizontal piece, wherein the horizontal piece has opposite ends provided with engaging grooves for engaging mounting hardware of the wire drawing roller. , The distance a ₁ from the center line of the horizontal leg piece to both end edges,
and a _2, the distance b _1, b ₂ from the center line of the horizontal leg to the bottom of the engagement groove is extended line roller mounting aid, characterized in that it is formed differently respectively.