JP2961209B2 - Support device for overhead distribution line and switchgear used therefor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting an overhead distribution line and a switchgear used therefor.

[0002]

2. Description of the Related Art Wooden poles, iron poles, reinforced concrete columns or towers (hereinafter referred to as pillars or towers) are used as supports for overhead distribution lines for supplying power from a distribution substation to a demand location. Have been. FIG. 13 shows a conventional pillar-shaped or tower-shaped mounting form. Conventionally, as shown in the figure, a arm is provided on a pillar or a board, and a switch,
Various devices such as circuit breakers, transformers, control boxes, insulators, etc. were installed.

[0003]

2. Related Art As is apparent from FIG. 13, when many devices are mounted on the arm, wiring work must be performed for each mounting operation in addition to the device mounting operation. Since the number of working steps is large, the working efficiency is low, and during the work, the work must be carried out with care not to touch adjacent equipment or complicated wiring to prevent electric shock.

[0004] In addition, when a ferrule is attached to a pillar or a tower, and a number of devices are mounted on the ferrule, a wide arm including a ferrule, a device, and an electric wire is used in addition to the pillar or the tower. Receives wind pressure over the area. For this reason, countermeasures against strong winds such as typhoons are required, which requires not only extra strength improvement but also reinforcement work.

[0005] Furthermore, in recent years, the beauty of the city has become a problem, and as a countermeasure for this, burying of electric wires underground has been attempted. Undergrounding of electric wires requires a certain road width,
Underground roads cannot be buried under narrow roads. In such a place, the conventional cluttered support device is used, so that it is not possible to cope with the aesthetics of the city, and there is a need for a new support device for the overhead distribution line that can cope with the aesthetics of the city.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an overhead distribution line support apparatus which solves the above-mentioned problems and a switchgear used therefor.

[0007]

The constitution of the invention adopted to achieve the above object is as follows.

According to a first aspect of the present invention, there is provided an apparatus for supporting an overhead distribution line, the apparatus having a joint surface with a switchgear.
Telephone pole to be mounted, attached to the outer surface of the telephone pole,
And an opening and closing device having a bonding surface for bonding, the utility pole <br/> includes a wiring path for the intake and supply of electric power is provided with in the utility pole, tear Ru connection conductor connected to the wiring path And the contact
And a fitting hole having a connection conductor, and the connection conductor
The fitting hole is provided on the joining surface side, and the opening and closing device is
A connection conductor and the fitting of the telephone pole surrounding the connection conductor;
Comprising a mold insulator fitted to Goana, and the mall
Connection conductor and de insulators, is provided with the bonding surface side, the electrocoating
When the switchgear is mounted on a pillar , the mold insulation
The body is fitted in the fitting hole and the connecting surface on the utility pole side.
And the joint surface of the opening and closing device are joined and housed in the fitting hole.
Connection conductor and the above-mentioned mold insulator
Wherein the connecting conductors are also electrically connected, a supporting device for overhead distribution lines.

[0009] In the second invention, the opening and closing device comprises a guide pin having a longer projection length than the bushing is provided with the joining surface side of the electric pole <br/>, power poles, and the switchgear Contact
It is formed on the mating surface side, characterized in that it comprises a fixing means and a guide hole fitted into the guide pin relative to the guide pins, to further secure the switchgear to a telephone pole
The overhead distribution line support device according to the first invention.

[0010] In the third invention, the opening and closing device is mounted.
That the location of the utility pole to be
Fictitious distribution according to the first or second invention, characterized by
It is a support device of the electric line.

According to the fourth aspect of the present invention, the power pole is provided inside a telephone pole.
Wiring for taking in and supplying electric power, and the wiring
Connection conductor connected to the connector, and a fitting having the connection conductor
A mating hole, wherein the connection conductor and the fitting hole are
A switchgear that is attached to a telephone pole provided on the joint surface side.
The connection conductor and the connection conductor are surrounded by the power pole.
It has a mold insulator that fits into the fitting hole,
The bushing on the mating side and the
Guide pin having a longer protruding length than the above bushing
And when the switchgear is mounted on the telephone pole.
The bushing is fitted in the fitting hole and
The connecting surface on the power pole side and the connecting surface of the switchgear are joined,
Connection conductor housed in said fitting hole and said bushing
The connection conductor is also electrically connected.
It is a switchgear. The switchgear according to the present invention includes a circuit breaker (including a circuit breaker and a branch circuit breaker) and a switch.

The guide pin provided on the opening / closing device is inserted into the guide hole of the utility pole . As a result, the bushing and the fitting hole face each other,
The connection conductors also face each other and can be connected. Then, the switchgear is pushed toward the utility pole , the tip end of the bushing is inserted into the fitting hole, and further pushed, the connection conductors are connected.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. Note that the same or equivalent parts are denoted by the same reference numerals throughout the drawings. FIG. 1 is an explanatory view of a first embodiment of an overhead distribution line support device according to the present invention, and FIG. 2 is an explanatory diagram showing a connection configuration between a utility pole and a switchgear in the support device shown in FIG. .

In FIG. 1, reference numeral 100 denotes a supporting device for an overhead distribution line. The support device 100 includes a telephone pole 1, a circuit breaker 2 (a circuit breaker 2a, a branch circuit breaker 2b, 2c) as a switching device, a transformer 3, a high-voltage branch connector 4, and a low-voltage branch connector 6. . These devices will be described in more detail.

A transformer 3 having a cylindrical shape is mounted on the top of the utility pole 1 so that the utility pole 1 has an extended shape. Slightly below the transformer 3, a high-voltage branch connector 4 is mounted. The high-voltage branch connector 4 is provided with a connection terminal 4 a for connecting to the main line 5. Below the high-voltage branch connector 4, a line breaker 2a is mounted. Furthermore, line breaker 2
Below the a, two branch circuit breakers 2b and 2c are mounted.

When a plurality of branch circuit breakers are mounted as in this embodiment, the wiring paths in the utility pole 1 are complicated, and the concrete portion is reduced at that portion, and the strength of the utility pole 1 is reduced.
For this reason, this portion is formed so as to be the large-diameter portion 1a. Below the branch circuit breakers 2b and 2c, a low-voltage branch connector 6 is mounted for low-voltage consumers. In addition, an underground wiring route that passes underground from the lower part of the utility pole 1 is separately provided for high-voltage consumers.

Here, a structure for mounting the above-mentioned various devices on a telephone pole will be described by taking a circuit breaker as an example. 3 is a front view of the circuit breaker, FIG. 4 is a side view of the circuit breaker shown in FIG. 3, FIG. 5 is a plan view of the circuit breaker shown in FIG. 3, and FIG. FIG. 7 is a perspective view of an essential part showing a state where a circuit breaker is mounted on a utility pole, and FIG. 8 is an enlarged view of a broken part of FIG.

The bushings 7 are provided in two rows and six locations on the side of the circuit breaker 2 on the joint surface 20 side to the utility pole 1. The bushing 7 includes a connection conductor 7b having a bottomed cylindrical portion.
And a multi-contact 7c disposed on the inner surface of the connection conductor 7b, and a frusto-conical mold insulator 7a surrounding these. On the upper side and the lower side of the bushing 7 group, guide pins 8, 8 each having a longer projecting length than the bushing 7 are protruded. In addition, engaging claws 9 swinging about pivot portions are provided at four upper and lower portions on both side surfaces of the circuit breaker 2, and the engaging claws 9 are urged in a closing direction by a spring in a normal state.

On the other hand, a flat semi-conductive rubber mold joining surface 10 is formed at the mounting position of the circuit breaker 2 in the utility pole 1. A fitting hole 1 having an inner surface formed by a rubber mold insulator 10a and having a truncated conical taper is formed in the joining surface 10.
6 are formed at six locations facing the bushing 7. At the bottom of the fitting hole 11, a bar-shaped connection conductor 12 is provided in a protruding manner. An annular semiconductive rubber mold 13 is provided so as to surround the connection conductor 12.

On the upper and lower sides of the group of fitting holes 11, there are provided guide holes 14, 14 for fitting the guide pins 8, 8 in opposition to the guide pins 8, 8, respectively. In addition, engaging claws 9 are provided at the four upper and lower positions on both sides of the utility pole 1 with the joining surface 10 therebetween.
Is provided with a hooking projection 15 for hooking.

The guide pins 8, 8 of the circuit breaker 2 are connected to the guide holes 14,
Insert into 14. Thereby, the bushing 7 and the fitting hole 1
1 are opposed to each other, and the connection conductors 7b and 12 are also opposed to each other and can be connected. Then, the circuit breaker 2 is pushed toward the utility pole 1, the tip of the bushing 7 is fitted into the fitting hole 11, and when further pushed, the connection conductor 7b and the connection conductor 12 are fitted and electrically connected.

At the same time when the connecting conductor 7b and the connecting conductor 12 are connected, the engaging claw 9 engages with the engaging projection 15, and the circuit breaker 2
Attached to. At this time, the distal end of the mold insulator 7a and the distal end of the semiconductive rubber mold 13 are brought into close contact with each other by pressure so that the insulation of the conductor connection portion is ensured. When removing the circuit breaker 2 from the utility pole 1, the engaging claw 9 may be expanded to release the engagement with the engaging projection 15, and the circuit breaker 2 may be separated.

FIG. 9 is an explanatory view of a second embodiment of the overhead distribution line support device according to the present invention, and FIG. 10 is a diagram illustrating a connection configuration between a utility pole and a switchgear in the support device shown in FIG. FIG. In this embodiment, the utility pole 1 has a utility pole main body 1b and a branch portion 1c. A high-pressure branch connector 4 formed in a truncated cone shape is provided at the top of the branch portion 1c. A circuit breaker 2 having a columnar shape formed thereon.
a is mounted so as to have a shape in which the high-pressure branch connection body 4 is extended.

Also, from the upper part of the branch part 1c, the telephone pole body 1
The wiring path 1d is formed in the power pole main body 1b so that wiring can be performed from the high-voltage branch connector 4 to the utility pole main body 1b. A low-voltage branch connector 6 is provided below the branch 1c.

FIG. 11 is a front view illustrating the structure of the circuit breaker 2a shown in FIG. 9, and FIG. 12 is a side view of the circuit breaker 2a shown in FIG. The circuit breaker 2a is formed in a cylindrical shape, and a bushing 7 having the structure shown in the first embodiment is arranged and protruded from the joint surface 20 side with the high-voltage branch connection body in a six-ring configuration. . Four engaging claws 9 are provided on the peripheral surface of the circuit breaker 2a.
Are evenly spaced with an interval of °.

A guide pin 8 protrudes from the center of the joining surface 20. A fitting hole, a guide hole, and a hooking projection are formed on the joint surface on the side of the high-pressure branch connector 4 in correspondence with the bushing 7, the guide pin 8, and the hooking claw 9, respectively. The operation is almost the same as that of the first embodiment, and the description is omitted. The second embodiment is convenient for work using a crane.
Note that the present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims.

[0027]

As described above, the present invention has the following advantages. (1) When the switchgear is mounted on the utility pole , the respective connection conductors are electrically connected to each other. For this reason, wiring to various devices mounted on a telephone pole as in the related art becomes unnecessary, and the number of work steps can be reduced accordingly. In addition, since the wiring and the connection terminals are not exposed, even if they come into contact with an adjacent device during the operation, there is no danger of electric shock and safety is ensured. (2) As the wiring becomes unnecessary, there is no connection terminal for the wiring outside the device, and the entire device becomes smaller, so that the wind pressure received by the whole support device also becomes smaller. Therefore, extra strength improvement and reinforcement work as countermeasures against a strong wind such as a typhoon can be reduced. (3) Since there are no overhangs such as arms and wires, the appearance is neat and neat, and an overhead distribution line support device that can meet the aesthetics of the city can be provided.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a first embodiment of a supporting device for an overhead distribution line according to the present invention.

FIG. 2 is an explanatory diagram showing a connection configuration between a utility pole and a switchgear in the support device shown in FIG. 1;

FIG. 3 is a front view of the circuit breaker.

FIG. 4 is a side view of the circuit breaker shown in FIG.

FIG. 5 is a plan view of the circuit breaker shown in FIG.

FIG. 6 is a perspective view of a mounting portion of a utility pole on which a circuit breaker is mounted.

FIG. 7 is an explanatory view of a main part with a part broken away showing a state in which a circuit breaker is mounted on a utility pole.

FIG. 8 is an enlarged view of a broken portion in FIG. 7;

FIG. 9 is an explanatory view of a second embodiment of the overhead distribution line support device according to the present invention.

FIG. 10 is an explanatory diagram showing a connection configuration between a utility pole, a circuit breaker, and a switch in the support device shown in FIG. 9;

FIG. 11 is a front view illustrating the structure of the circuit breaker shown in FIG.

FIG. 12 is a side view of the circuit breaker shown in FIG.

FIG. 13 is a diagram showing a conventional pillar-shaped or tower-shaped mounting form.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power pole 2 Circuit breaker 3 Transformer 4 High voltage branch connection 5 Main line 6 Low voltage branch connection

Continuing from the front page (72) Inventor Akiyoshi Sato 1 Higashi-ku, Higashi-ku, Nagoya City, Aichi Prefecture Inside Chubu Electric Power Co., Inc. (72) Inventor Masami Suzuki No. 1, Kami-kobari, Inuyama-shi, Aichi Prefecture Energy Support Co., Ltd. (56) References JP-A-60-102811 (JP, A) JP-A-1-152700 (JP, A) JP-A-7-212946 (JP, A) Japanese Utility Model Application Sho 61-8976 (JP, U) Japanese Utility Model Application Utility Model Sho 63-150485 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02G 7/00-7/22

Claims (4)

(57) [Claims] 1. A device for supporting an overhead distribution line, comprising: a utility pole (1) having a joint surface (10) with a switchgear; and an electric pole (1) mounted on an outer surface of the utility pole (1). )
Comprising a closing device having a bonding surface for engagement (20), the said utility pole (1) includes a wiring path for the intake and supply of electric power is provided with in the utility pole (1), connected to the wiring path Thea Ru connecting conductor (12) and said connecting conductors (1
A fitting hole (11) having a 2), provided with said connecting conductor (12) and fitting hole (11) is the bonding surface (1
0) side, the switching device surrounds the connection conductor (7b) and the connection conductor (7b), and
A molded insulator (7a) fitted into the fitting hole (11) .The molded insulator (7a) and the connection conductor (7b) are in contact with each other.
Is provided with a mating surface (20) side, when fitted with the opening and closing device to the utility pole (1), said motor
The field insulator (7a) is fitted in the fitting hole (11) and
The joint surface (10) on the utility pole (1) side and the joint surface (2
(0) and the connection conductor accommodated in the fitting hole (11).
Body (12) and the connection housed in the mold insulator (7a)
Characterized in that the conductor (7b) is also electrically connected to the support device of overhead distribution lines. 2. A switching device is provided with a utility pole (1) joint surface of the (20) is provided with a side guide pin (8) having a longer projection length than the bushing (7), utility pole (1), the closing is formed on the bonding surface (10) side of the device, including relative with the guide pins (8) and guide holes fitted into the same guide pin (8) (14), a further utility pole a switchgear 2. The overhead distribution line support device according to claim 1, further comprising fixing means for fixing to the (1) . 3. The location of the utility pole (1) where the switchgear is mounted
Claims characterized in that it is formed to be a large diameter part
Item 3. The support device for an overhead distribution line according to item 1 or 2. 4. An electric power intake provided in a telephone pole (1).
And a wiring path for supply, and a connection connected to the wiring path.
Connection conductor (12), fitting hole (11) having the connection conductor (12)
And the connection conductor (12) and the fitting hole (11) are a switchgear.
Opening and closing to attach to the utility pole (1) provided on the joint surface (10) side with
An apparatus, comprising: a connection conductor (7b); and the power pole surrounding the connection conductor (7b).
A mold insulator (7a) fitted into the fitting hole (11).
And the bushing provided on the joint surface (20) side with the utility pole (1)
(7) , provided on the same joint surface (20) and longer than the bushing (7).
Includes a guide pin (8) having a projection length, when mounting the opening and closing device to the utility pole (1), said blanking
The shing (7) is fitted in the fitting hole (11) and
The joint surface (10) on the utility pole (1) side and the joint surface (20) of the switchgear described above
Are joined and the connection conductor (1) accommodated in the fitting hole (11) is connected.
The connection conductor (7b) of 2) and the bushing (7) are also electrically connected.
A switchgear , characterized in that the switchgear.