JP2800773B2 - Distribution line branching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution line branching device for branching and opening an overhead or underground distribution line in a high-voltage load concentrated area such as a downtown area in an urban area.

[0002]

2. Description of the Related Art A conventional distribution line branching device will be described with reference to FIGS. 4A and 4B showing a front view and a left side view. In these figures, 1 is a hollow column made of a steel pipe column or a concrete column, 2 is a front and rear arm bar attached to the upper end of the column 1, 3 is a branch switch, and 4 is an upper surface of the switch 3. The hanging hardware 5 is a front part on both sides of the hanging hardware 4,
4 vertical stud bolts planted at the rear, 6
Are two holding plates, the upper ends of two front stud bolts 5 penetrate through both ends of the front holding plate 6, and the two rear studs are inserted into both ends of the rear holding plate 6. The upper end of the bolt 5 penetrates.

Reference numeral 7 denotes a nut screwed to the upper end of each stud bolt 5. The arm bar 2 is inserted between the front and rear stud bolts 5. The lower surface of both holding plates 6 abuts on the upper surface of the arm 2, and the switch 3 is mounted on the arm 2.

[0004] Reference numeral 8 denotes a manual shaft rotatably provided on the front plate of the switch 3, and is connected to the switch. Reference numeral 9 denotes an operation lever fixed to the manual shaft 8, reference numeral 10 denotes an opening / closing operation device including the manual shaft 8 and the operation lever 9, and reference numeral 11 denotes an opening / closing display portion which is fixed to the operation device 10 and indicates ON / OFF of the operation device 10. is there.

[0005] Reference numeral 12 denotes a cylindrical body provided along the column 1, 1
Reference numeral 3 denotes a lead-in cable introduced into the cylindrical body 12, and a distal end portion is connected to a side surface of the switch 3. 14 is a front and rear supporting rod attached to the column 1 below the switch 3;
Is a three-phase supporting insulator arranged side by side on the supporting rod 14, and 16 is a branch cable. The lead-in cable 13 is branched in the switch 3, and is led out from both sides of the lower surface of the switch 3 through the switch. Then, it is drawn into each high-voltage consumer through the support insulator 15.

[0006]

In the case of the above-mentioned conventional apparatus, the branching switch 3 is attached to the column 1 by a suspension structure, and the arm 2, the suspension hardware 4, the stud bolt 5, and the holding plate 6 are provided. And other parts are required, and the lead-in cable 13 is exposed.
There is a problem that the mounting work of the switch 3 on the support column 1 is complicated.

The present invention has been made with the foregoing in mind, and is intended to facilitate the work of attaching a branch switch and to improve the appearance of the distribution line without exposing the lead-in cable, thereby achieving a beautiful appearance. It is an object to provide a branching device.

[0008]

In order to solve the above problems, a distribution line branching device according to the present invention has an opening formed in an upper peripheral wall of a hollow support, and a back surface attached to a peripheral edge of the opening. A branch switch, a drop-in cable which is introduced into a column, and whose leading end is connected to the back of the switch, and a drop-in cable in which the drop-in cable branches in the switch and is led out of the switch through the switch. It is provided with.

Therefore, since the back surface of the branching switch is mounted on the peripheral portion of the opening of the column, there is no need for hanging hardware as in the prior art, so that the mounting work is facilitated and the external appearance is improved. I do.

[0010] Further, since the drop-in cable is introduced into the support and connected to the back of the switch, the drop-in cable is not exposed to the outside, and the appearance is further improved.

[0011] Further, on the front plate of the branch switch, a switching operation unit and a switching display unit of the switching unit of each branch cable are juxtaposed, and the branch cables are led out from both side plates of the switch.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to FIGS. In those figures, the same reference numerals as those in FIG. 4 indicate the same or corresponding elements. (Embodiment 1) First, according to Embodiment 1, FIGS. 1A and 1B of a front view and a partially cut left side view, a left side view of FIG. 1A, a partially enlarged plan view, and FIGS. , C will be described.

Reference numeral 17 denotes a mounting opening formed on the front surface of the upper peripheral wall of the column 1 made of a steel pipe column, 18 denotes a working opening formed on the rear surface of the column 1 at a position facing the opening 17,
Reference numeral 19 denotes a cover plate detachably attached to the work opening 18;
0 is a switch base to which the branch switch 3 is attached, 21
Is a switch base 2 with a switch base 20 mounted on the front.
A support base 22 having the same shape as that of the support base 22 has a support base 21 at one end.
Is a suspension band fixed to an upper portion and a lower portion on one side of the rear surface of the support base 21. After being wound around the support column 1, the other end is tightened or locked by metal fittings on the other side on the rear side of the support base 21, and is opened and closed. The vessel 3 is mounted on the column 1. Reference numeral 23 denotes a positioning bushing base protruding from the back surface of the support base 21. The switch 3 is more stably mounted on the support 1 by fitting the bushing base 23 into the mounting opening 17.

Reference numeral 24 denotes a drop-in cable which is introduced into the column 1 from the ground, and the leading end of which is connected to a bushing base 23 through an L-shaped connector 25. As shown in FIG. The upper and lower lead-in cables 24 are connected to the vertical position from the left side, and the central lead-in cable 24 is connected to the right side. Reference numeral 26 denotes a branch cable. Each drop cable 24 is branched in the switch 3, and is led out from both side surfaces of the switch 3 through the switch, respectively, and introduced into the cylinders 12 on both sides of the column 1, respectively. It has been drawn into high-voltage consumers.

Then, the attachment / detachment of the drop-in cable 24 to / from the back of the switch 3 is carried out through the working opening 18 by removing the cover plate 19.

(Embodiment 2) Next, Embodiment 2 will be described with reference to FIG. 3 which is a partially enlarged plan view. 2B is different from FIG. 2B in that there is no suspension band 22 and no bushing base 23, and a frame-shaped mounting base 27 is fixed to the periphery of the mounting opening 17 by welding.
7 is that the switch base 20 is mounted by bolts 28.

In the case of the first embodiment, the lead-in cable 2
4 was introduced into the column 1 from underground, but may be introduced from above the column 1. Further, although the branch cable 26 is introduced into the cylindrical body 12, an insertion hole may be formed in the column 1, the branch cable 26 may be inserted into the insertion hole, and the branch cable 26 may be introduced into the column 1. The body 12 is not required, and the aesthetic appearance is further improved.

[0018]

Since the present invention is configured as described above, it has the following effects. In the distribution line branching device of the present invention, the back surface of the branch switch 3 is attached to the peripheral edge of the opening 17 formed in the upper peripheral wall of the column 1, so that the conventional hanging hardware and the like are not required, and the mounting operation can be omitted. In addition to being easy, the appearance can be improved.

Further, since the drop-in cable 24 is introduced into the column 1 and connected to the back of the switch 3, the drop-in cable 24
Is not exposed to the outside, so that it is possible to further improve the appearance.

[Brief description of the drawings]

FIG. 1A is a front view of a first embodiment of the present invention, and FIG. 1B is a partially cut left side view.

2A is a left side view of FIG. 1A, FIG. 2B is an enlarged sectional plan view of a part of A, and FIG. 2C is a rear view of a part of B;

FIG. 3 is an enlarged cut plan view of a part of the second embodiment of the present invention.

FIG. 4A is a front view of a conventional example, and FIG. 4B is a left side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Prop 3 Branch switch 17 Opening 24 Drop-in cable 26 Branch cable

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02B 5/02 H02G 7/20

Claims (2)

(57) [Claims] An opening formed in an upper peripheral wall of a hollow support; a branch switch having a rear surface attached to a peripheral portion of the opening; and a branch switch introduced into the support and having a tip portion provided on a rear surface of the switch. A distribution line branching device comprising: a connected drop-in cable; and a drop-off cable branched in the switch, and a branch cable led out of the switch via a switch. 2. A switchgear for a switchgear of each branch cable and a switchgear display unit are arranged side by side on a front plate of the branch switchgear, and the branch cables are led out from both side plates of the switchgear. The distribution line branching device according to claim 1.